PCR control device and method, product and storage medium

Abstract

The invention provides a PCR control device and method, a product and a storage medium. The device comprises at least one heating assembly, a reaction tube corresponding to the heating assembly and a control assembly, at least one first sensor is arranged on the heating assembly; the heating assembly is further provided with at least one heat dissipation assembly. The heat dissipation assembly comprises at least one second sensor; an air duct is arranged around the heat dissipation assembly; the air duct is connected with a fan; the control assembly is connected with the first sensor, the second sensor and the fan. The first sensor is used for collecting a first temperature signal of the corresponding heating assembly; the second sensor is used for collecting a second temperature signal of the corresponding heat dissipation assembly; and the control assembly is used for controlling the working state of the fan based on the first temperature signal and / or the second temperature signal, so that the temperature in the reaction tube is stable.

Description

Technical Field

[0001] The present application relates to the field of control, and in particular to a control device, method, product and storage medium for polymerase chain reaction (PCR). Background Art

[0002] In order to improve the heating and cooling rate of PCR temperature control, a semiconductor heater refrigeration plate (Thermo Electric Cooler, TEC) is used for temperature control. TEC semiconductors will generate heat under the action of positive and negative currents. However, during the cooling and constant temperature process, if the heat generated is greater than the heat dissipated by the radiator, the temperature control sensor will be used in reverse. In order to keep the temperature control sensor at the target temperature, the controller will reduce the power of TEC, resulting in a continuous decrease in the temperature of the reagent in the tube. And as the number of cycles increases, the heat accumulated on the radiator causes the heat dissipation capacity to decrease, and the average heating and cooling rate will also decay. How to solve the decay of the average heating and cooling rate and the very fast rate to stabilize the temperature in the reaction tube is an urgent problem to be solved. Summary of the invention

[0003] In order to solve the existing technical problems, the embodiments of the present application provide a PCR control device, method, product and storage medium.

[0004] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0005] The embodiment of the present application provides a PCR control device, the device comprising: at least one heating component, a reaction tube corresponding to the heating component and a control component; at least one first sensor is arranged on the heating component; at least one heat dissipation component is also arranged on the heating component; the heat dissipation component comprises at least one second sensor; an air duct is arranged around the heat dissipation component; the air duct is connected to a fan; the control component is respectively connected to the first sensor, the second sensor and the fan;

[0006] The first sensor is used to collect a first temperature signal of the corresponding heating component;

[0007] The second sensor is used to collect a second temperature signal of the corresponding heat dissipation component;

[0008] The control component is used to control the working state of the fan based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube.

[0009] In the above scheme, the control component includes an analog-to-digital converter (ADC), a microcontroller unit (MCU) and a drive circuit; the ADC is connected to the first sensor, the second sensor and the MCU respectively; the drive circuit is connected to the MCU and the fan respectively;

[0010] The ADC is used to convert the first temperature signal and / or the second temperature signal to obtain a first digital signal corresponding to the first temperature signal and / or a second digital signal corresponding to the second temperature signal;

[0011] The MCU is used to determine a first temperature value based on the first digital signal and a second temperature value based on the second digital signal; and to determine a pulse width modulation (PWM) signal based on the first temperature value and / or the second temperature value;

[0012] The driving circuit is used to determine a voltage parameter or a current parameter of the fan based on the PWM signal; the voltage parameter or the current parameter is used to control the working state of the fan.

[0013] In the above solution, the voltage parameter includes a first voltage parameter and a second voltage parameter; the current parameter includes a first current parameter and a second current parameter;

[0014] The MCU is further configured to determine whether the first temperature value is greater than a preset target temperature; if the first temperature value is greater than the target temperature, determine the PWM signal of a first duty cycle; if the first temperature value is less than or equal to the target temperature, determine the PWM signal of a second duty cycle; the first duty cycle and the second duty cycle are different;

[0015] The driving circuit is also used to determine the first voltage parameter or the first current parameter based on the PWM signal of the first duty cycle, and to determine the second voltage parameter or the second current parameter based on the PWM signal of the second duty cycle; the first voltage parameter or the first current parameter is used to control the working state of the fan to have a maximum air volume; the second voltage parameter or the second current parameter is used to control the working state of the fan to stop working.

[0016] In the above scheme, the voltage parameters include a third voltage parameter, a fourth voltage parameter and a fifth voltage parameter; the current parameters include a third current parameter, a fourth current parameter and a fifth current parameter;

[0017] The MCU is further used to determine whether the second temperature value is greater than a first threshold or less than a second threshold; the second threshold is greater than the first threshold; the first threshold and the second threshold are both related to the volume of the heat dissipation component; when the second temperature value is less than or equal to the first threshold, the PWM signal of the third duty cycle is determined; when the second temperature value is greater than the first threshold or less than the second threshold, the PWM signal of the fourth duty cycle is determined; when the second temperature value is greater than or equal to the second threshold, the PWM signal of the fifth duty cycle is determined; the third duty cycle, the fourth duty cycle and the fifth duty cycle are different;

[0018] The driving circuit is also used to determine the third voltage parameter or the third current parameter based on the PWM signal of the third duty cycle; and to determine the fourth voltage parameter or the fourth current parameter based on the PWM signal of the fourth duty cycle; and to determine the fifth voltage parameter or the fifth current parameter based on the PWM signal of the fifth duty cycle; the third voltage parameter or the third current parameter is used to control the working state of the fan to stop working; the fourth voltage parameter or the fourth current parameter is used to control the working state of the fan to have a minimum air volume; the fifth voltage parameter or the fifth current parameter is used to control the working state of the fan to have a maximum air volume.

[0019] In the above scheme, the at least one heating component includes a first heating component and a second heating component; the at least one first sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is connected to the first heating component; the second temperature sensor is connected to the second heating component; the first temperature signal includes a first temperature sub-signal and a second temperature sub-signal;

[0020] The first temperature sensor is used to collect the first temperature sub-signal of the first heating component;

[0021] The second temperature sensor is used to collect the second temperature sub-signal of the second heating component.

[0022] In the above scheme, the at least one heat dissipation component includes a first heat dissipation component and a second heat dissipation component; the at least one second sensor includes a third temperature sensor and a fourth temperature sensor; the third temperature sensor is connected to the first heat dissipation component; the fourth temperature sensor is connected to the second heat dissipation component; the second temperature signal includes a third temperature sub-signal and a fourth temperature sub-signal;

[0023] The third temperature sensor is used to collect the third temperature sub-signal of the first heat dissipation component;

[0024] The fourth temperature sensor is used to collect the fourth temperature sub-signal of the second heat dissipation component.

[0025] In the above solution, the control component is further used to control the working state of the fan based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal.

[0026] In the above scheme, the first temperature sub-signal corresponds to the first digital sub-signal; the second temperature sub-signal corresponds to the second digital sub-signal; the third temperature sub-signal corresponds to the third digital sub-signal; the fourth temperature sub-signal corresponds to the fourth digital sub-signal;

[0027] The ADC is further used to convert the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain a first digital sub-signal corresponding to the first temperature sub-signal, a second digital sub-signal corresponding to the second temperature sub-signal, a third digital sub-signal corresponding to the third temperature sub-signal and / or a fourth digital sub-signal corresponding to the fourth temperature sub-signal;

[0028] The MCU is further configured to determine the first temperature value based on the first digital sub-signal and / or the second digital sub-signal and to determine the second temperature value based on the third digital sub-signal and / or the fourth digital sub-signal.

[0029] In the above scheme, the ADC includes:

[0030] A processor for determining the first digital signal and / or the second digital signal based on the first temperature signal and / or the second temperature signal.

[0031] In the above solution, the MCU includes:

[0032] A controller is provided for controlling the PWM signal based on the first temperature value and / or the second temperature value.

[0033] The present application provides a PCR control method, which is applied to the PCR control device described above; the method includes:

[0034] Collecting a first temperature signal of the heating component and a second temperature signal of the heat dissipation component;

[0035] The working state of the fan is controlled based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube.

[0036] In the above solution, controlling the working state of the fan based on the first temperature signal and / or the second temperature signal includes:

[0037] Converting the first temperature signal and / or the second temperature signal to obtain a first digital signal corresponding to the first temperature signal and / or a second digital signal corresponding to the second temperature signal;

[0038] determining a first temperature value based on the first digital signal and a second temperature value based on the second digital signal; determining a PWM signal based on the first temperature value and / or the second temperature value;

[0039] A voltage parameter or a current parameter of the fan is determined based on the PWM signal; the voltage parameter or the current parameter is used to control the working state of the fan.

[0040] In the above solution, the voltage parameter includes a first voltage parameter and a second voltage parameter; the current parameter includes a first current parameter and a second current parameter; and determining the PWM signal based on the first temperature value includes:

[0041] Determining whether the first temperature value is greater than a preset target temperature;

[0042] When the first temperature value is greater than the target temperature, determining the PWM signal with a first duty cycle;

[0043] When the first temperature value is less than or equal to the target temperature, determining the PWM signal of a second duty cycle; the first duty cycle and the second duty cycle are different;

[0044] Correspondingly, determining the voltage parameter or current parameter of the fan based on the PWM signal includes:

[0045] The first voltage parameter or the first current parameter is determined based on the PWM signal of the first duty cycle, and the second voltage parameter or the second current parameter is determined based on the PWM signal of the second duty cycle; the first voltage parameter or the first current parameter is used to control the working state of the fan to have a maximum air volume; the second voltage parameter or the second current parameter is used to control the working state of the fan to stop working.

[0046] In the above solution, the voltage parameter includes a third voltage parameter, a fourth voltage parameter and a fifth voltage parameter; the current parameter includes a third current parameter, a fourth current parameter and a fifth current parameter; and the determining of the PWM signal based on the second temperature value includes:

[0047] Determining whether the second temperature value is greater than a first threshold or less than a second threshold;

[0048] The second threshold is greater than the first threshold; the first threshold and the second threshold are both related to the volume of the heat dissipation component;

[0049] When the second temperature value is less than or equal to the first threshold, determining the PWM signal with a third duty cycle;

[0050] When the second temperature value is greater than the first threshold or less than the second threshold, determining the PWM signal of a fourth duty cycle; when the second temperature value is greater than or equal to the second threshold, determining the PWM signal of a fifth duty cycle; the third duty cycle, the fourth duty cycle and the fifth duty cycle are different;

[0051] Correspondingly, determining the voltage parameter or current parameter of the fan based on the PWM signal includes:

[0052] The third voltage parameter or the third current parameter is determined based on the PWM signal of the third duty cycle; and the fourth voltage parameter or the fourth current parameter is determined based on the PWM signal of the fourth duty cycle; and the fifth voltage parameter or the fifth current parameter is determined based on the PWM signal of the fifth duty cycle; the third voltage parameter or the third current parameter is used to control the working state of the fan to stop working; the fourth voltage parameter or the fourth current parameter is used to control the working state of the fan to have a minimum air volume; the fifth voltage parameter or the fifth current parameter is used to control the working state of the fan to have a maximum air volume.

[0053] In the above solution, the first temperature signal includes a first temperature sub-signal and a second temperature sub-signal; and the collecting of the first temperature signal of the corresponding heating component includes:

[0054] The first temperature sub-signal of the first heating component and the second temperature sub-signal of the second heating component are collected.

[0055] In the above solution, the second temperature signal includes a third temperature sub-signal and a fourth temperature sub-signal; and the collecting of the second temperature signal of the corresponding heat dissipation component includes:

[0056] The third temperature sub-signal of the first heat dissipation component and the fourth temperature sub-signal of the second heat dissipation component are collected.

[0057] In the above solution, controlling the working state of the fan based on the first temperature signal and / or the second temperature signal includes:

[0058] The operating state of the fan is controlled based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal.

[0059] In the above scheme, the first temperature sub-signal corresponds to a first digital sub-signal; the second temperature sub-signal corresponds to a second digital sub-signal; the third temperature sub-signal corresponds to a third digital sub-signal; the fourth temperature sub-signal corresponds to a fourth digital sub-signal; the method further includes:

[0060] converting the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain a first digital sub-signal corresponding to the first temperature sub-signal, a second digital sub-signal corresponding to the second temperature sub-signal, a third digital sub-signal corresponding to the third temperature sub-signal and / or a fourth digital sub-signal corresponding to the fourth temperature sub-signal;

[0061] The first temperature value is determined based on the first digital sub-signal and / or the second digital sub-signal and the second temperature value is determined based on the third digital sub-signal and / or the fourth digital sub-signal.

[0062] The present application also provides a computer program product, including a computer program, which implements any step of the above method when executed by a processor.

[0063] The present application also provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, any step of the above-mentioned method is implemented.

[0064] The embodiment of the present application provides a PCR control device, method, product and storage medium, which adopts the technical solution of the embodiment of the present application, and is provided with at least one heat dissipation component on the heating component; the heat dissipation component includes at least one second sensor; the first sensor collects the first temperature signal of the corresponding heating component; the second sensor collects the second temperature signal of the corresponding heat dissipation component; the control component controls the working state of the fan based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube. That is, the control component controls the working state of the fan based on the first temperature signal of the corresponding heating component collected by the first sensor and / or the second temperature signal of the corresponding heat dissipation component collected by the second sensor to stabilize the temperature in the reaction tube, thereby solving the problem of attenuation of the average heating and cooling rate and stabilizing the temperature in the reaction tube at a very fast rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 Schematic diagram of heat generated by power under abnormal temperature control and normal temperature control;

[0066] Figure 2 A schematic diagram of a PCR control device provided in an embodiment of the present application;

[0067] Figure 3Another schematic diagram of a PCR control device provided in an embodiment of the present application;

[0068] Figure 4 Another schematic diagram of a PCR control device provided in an embodiment of the present application;

[0069] Figure 5 Another schematic diagram of a PCR control device provided in an embodiment of the present application;

[0070] Figure 6 A schematic diagram of a heating TEC element and its temperature sensor in a PCR control device in an embodiment of the present application;

[0071] Figure 7 This is a schematic diagram of an application scenario of the PCR control device in the embodiment of the present application;

[0072] Figure 8 This is another application scenario schematic diagram of the PCR control device in the embodiment of the present application;

[0073] Fig. 9 This is a schematic diagram of the hardware form of the PCR module temperature control component in the embodiment of the present application;

[0074] Fig.10 This is a schematic diagram of hardware control in a PCR control device in an embodiment of the present application;

[0075] Fig.11 It is a comparison diagram between common control and control in this application;

[0076] Fig.12 Schematic diagram for determining the heat sink temperature threshold;

[0077] Fig.13 This is a schematic diagram of the temperature control logic of an embodiment of the present application;

[0078] Fig.14 A schematic diagram of a printed circuit board of a PCR control device in an embodiment of the present application;

[0079] Fig.15 A schematic diagram of a controller and a processor in a PCR control device in an embodiment of the present application;

[0080] Fig.16 This is a schematic diagram of the implementation process of a PCR control method according to an embodiment of the present application;

[0081] Fig.17 This is a schematic diagram of the structure of the PCR control device of the embodiment of the present application. DETAILED DESCRIPTION

[0082] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0083] Under abnormal conditions, the power of the radiator itself increases, which in turn controls the sensor to reduce the power of the TEC, such as Figure 1 As shown, Figure 1 Schematic diagram of heat generated by power under abnormal temperature control and normal temperature control; under abnormal temperature control, the thin black line gradually moves downward.

[0084] The principle of TEC semiconductor heating control sheet: The semiconductor heating device consists of two surfaces, AB, in which surface A is connected to the heat sink and surface B is connected to the reaction tube. When the TEC passes a positive current, surface B heats up, surface A cools down, and the temperature inside the tube rises. This can be referred to in the following formula (1):

[0085] Q c =Q TEC +Q A-B (1);

[0086] The TEC passes reverse current, the B side is cooling, the A side is heating, and the temperature inside the tube is reduced. You can refer to the following formula (2):

[0087] Q c =Q TEC +Q B-A (2);

[0088] In equations (1) and (2), QA-B and QB-A represent the heat transferred from surface A to surface B and the heat transferred from surface B to surface A; QTEC represents the heat generated by the power applied to TEC.

[0089] Then when heating up, the higher the temperature of the radiator, the faster the heating rate, and the less power required by QTEC, which is beneficial to the life of TEC; when cooling down, the lower the temperature of the radiator, the faster the cooling rate, and the less power required by QTEC, which is beneficial to the life of TEC.

[0090] The present application embodiment provides a PCR control device, Figure 2 A schematic diagram of a PCR control device provided in an embodiment of the present application; Figure 3 Another schematic diagram of a PCR control device provided in an embodiment of the present application; Figure 4 Another schematic diagram of a PCR control device provided in an embodiment of the present application; Figure 5 Another schematic diagram of a PCR control device provided in an embodiment of the present application; the following can be combined with Figure 2 , Figure 3 , Figure 4 and Figure 5 It is understood that the device 100 includes: at least one heating component 101, a reaction tube 102 corresponding to the heating component, and a control component 103; at least one first sensor 104 is arranged on the heating component 101; at least one heat dissipation component 105 is also arranged on the heating component 101; the heat dissipation component 105 includes at least one second sensor 106; an air duct 107 is arranged around the heat dissipation component 105; the air duct is connected to a fan 108; the control component 103 is respectively connected to the first sensor 104, the second sensor 106 and the fan 108;

[0091] The first sensor 104 is used to collect a first temperature signal of the corresponding heating component 101;

[0092] The second sensor 106 is used to collect a second temperature signal of the corresponding heat dissipation component 105;

[0093] The control component 103 is used to control the working state of the fan 108 based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube.

[0094] It should be noted that the control device of the PCR can be determined according to actual conditions and is not limited here. As an example, the control device of the PCR can be understood as a constant temperature control device of the PCR.

[0095] The specific number of the at least one heating component 101 can be determined according to actual conditions and is not limited here. As an example, the specific number of the heating components 101 can be 2. In practical applications, the heating component 101 can be a heating element, such as a TEC.

[0096] The control component 103 can be determined according to actual conditions and is not limited here. As an example, the control component 103 may include an ADC, an MCU, and a drive circuit. In practical applications, the control component 103 may be a controller.

[0097] The at least one heat dissipation component 105 can be determined according to actual conditions and is not limited here. As an example, the specific number of the heat dissipation components 105 can be 2. In practical applications, the heat dissipation component 105 can be a radiator.

[0098] The control component 103 is connected to the first sensor 104, the second sensor 106 and the fan 108 respectively; the connection can be determined according to the actual situation and is not limited here. As an example, the connection can be understood as an electrical connection, and the connection can also be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as Wireless Fidelity (WiFi) connection.

[0099] The first sensor 104 can be determined according to actual conditions and is not limited here. As an example, the first sensor 104 can be a temperature sensor.

[0100] The first sensor 104 is used to collect the first temperature signal of the corresponding heating component 101 . It can be understood that one heating component 101 corresponds to one first sensor 104 , and each first sensor 104 collects the first temperature signal of the corresponding heating component 101 .

[0101] The second sensor 106 can be determined according to actual conditions and is not limited here. As an example, the second sensor 106 can be a temperature sensor.

[0102] The second sensor 106 is used to collect the second temperature signal of the corresponding heat dissipation component 105 . It can be understood that one heat dissipation component 105 corresponds to one second sensor 106 , and each second sensor 106 collects the second temperature signal of the corresponding heat dissipation component 105 .

[0103] The working state of the fan 108 is controlled based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube; wherein, the working state of the fan 108 controlled based on the first temperature signal and / or the second temperature signal can be understood as controlling the working state of the fan 108 based on the first temperature signal, or controlling the working state of the fan 108 based on the second temperature signal, or controlling the working state of the fan 108 based on the first temperature signal and the second temperature signal. The working state can be determined according to actual conditions and is not limited here. As an example, the working state may include stopping work, minimum air volume, and maximum air volume.

[0104] In the embodiment of the present application, at least one heat dissipation component is also provided on the heating component; the heat dissipation component includes at least one second sensor; the first sensor collects the first temperature signal of the corresponding heating component; the second sensor collects the second temperature signal of the corresponding heat dissipation component; the control component controls the working state of the fan based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube. That is, the control component controls the working state of the fan based on the first temperature signal of the corresponding heating component collected by the first sensor and / or the second temperature signal of the corresponding heat dissipation component collected by the second sensor to stabilize the temperature in the reaction tube, thereby solving the problem of attenuation of the average heating and cooling rate and stabilizing the temperature in the reaction tube at a very fast rate.

[0105] In an optional embodiment of the present application, the control component 103 includes an ADC 1031, an MCU 1032, and a drive circuit 1033; the ADC 1031 is respectively connected to the first sensor 104, the second sensor 106, and the MCU 1032; the drive circuit 1033 is respectively connected to the MCU 1032 and the fan 108;

[0106] The ADC 1031 is used to convert the first temperature signal and / or the second temperature signal to obtain a first digital signal corresponding to the first temperature signal and / or a second digital signal corresponding to the second temperature signal;

[0107] The MCU 1032 is configured to determine a first temperature value based on the first digital signal and a second temperature value based on the second digital signal; and to determine a PWM signal based on the first temperature value and / or the second temperature value;

[0108] The driving circuit 1033 is further used to determine a voltage parameter or a current parameter of the fan 108 based on the PWM signal; the voltage parameter or the current parameter is used to control the working state of the fan 108 .

[0109] It should be noted that the ADC 1031 can be determined according to actual conditions, and is not limited here. In practical applications, the ADC 1031 can be an ADC chip. As an example, the ADC chip can include a processor.

[0110] The MCU 1032 may be determined according to actual conditions and is not limited here. In practical applications, the MCU 1032 may also be referred to as an MCU control unit. As an example, the MCU control unit may include a controller.

[0111] The driving circuit 1033 can be determined according to actual conditions and is not limited here. In practical applications, the driving circuit 1033 can also be called a hardware circuit.

[0112] The ADC 1031 is connected to the first sensor 104, the second sensor 106 and the MCU 1032 respectively; the connection can be determined according to the actual situation and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-distance communication technology, such as Bluetooth, Zigbee, etc.; or a long-distance communication technology, such as WiFi connection, can be used.

[0113] The driving circuit 1033 is connected to the MCU 1032 and the fan 108 respectively; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-distance communication technology, such as Bluetooth, Zigbee, etc.; or a long-distance communication technology, such as WiFi connection, can be used.

[0114] The specific conversion process of converting the first temperature signal and / or the second temperature signal to obtain the first digital signal corresponding to the first temperature signal and / or the second digital signal corresponding to the second temperature signal can be determined according to actual conditions and is not limited here. As an example, the conversion process of the first temperature signal and / or the second temperature signal to obtain the first digital signal corresponding to the first temperature signal and / or the second digital signal corresponding to the second temperature signal can be analog-to-digital conversion processing of the first temperature signal and / or the second temperature signal to obtain the first digital signal corresponding to the first temperature signal and / or the second digital signal corresponding to the second temperature signal.

[0115] The specific determination process in determining the first temperature value based on the first digital signal can be determined according to actual conditions and is not limited here. As an example, determining the first temperature value based on the first digital signal can be calculating the first temperature value based on the first digital signal.

[0116] The specific determination process in determining the second temperature value based on the second digital signal can be determined according to actual conditions and is not limited here. As an example, determining the second temperature value based on the second digital signal can be calculating the second temperature value based on the second digital signal.

[0117] The specific determination process in determining the PWM signal based on the first temperature value and / or the second temperature value can be determined according to actual conditions and is not limited here. As an example, the PWM signal determined based on the first temperature value and / or the second temperature value can be a PWM signal with different duty cycles calculated based on the first temperature value and / or the second temperature value.

[0118] The specific determination process of determining the voltage parameter or current parameter of the fan 108 based on the PWM signal can be determined according to actual conditions and is not limited here. As an example, the PWM signal is converted into a voltage parameter or current parameter of the fan 108. In practical applications, the voltage parameter may include a voltage value; the current parameter may include a current value.

[0119] The voltage parameter or current parameter is used to control the working state of the fan 108. The working state can be determined according to actual conditions and is not limited here. As an example, the working state can include stopping working, minimum air volume, and maximum air volume.

[0120] In an optional embodiment of the present application, the voltage parameter includes a first voltage parameter and a second voltage parameter; the current parameter includes a first current parameter and a second current parameter;

[0121] The MCU 1032 is further configured to determine whether the first temperature value is greater than a preset target temperature; if the first temperature value is greater than the target temperature, determine the PWM signal of a first duty cycle; if the first temperature value is less than or equal to the target temperature, determine the PWM signal of a second duty cycle; the first duty cycle and the second duty cycle are different;

[0122] The driving circuit 1033 is also used to determine the first voltage parameter or the first current parameter based on the PWM signal of the first duty cycle, and to determine the second voltage parameter or the second current parameter based on the PWM signal of the second duty cycle; the first voltage parameter or the first current parameter is used to control the working state of the fan 108 to have a maximum air volume; the second voltage parameter or the second current parameter is used to control the working state of the fan 108 to stop working.

[0123] It should be noted that the voltage parameter includes a first voltage parameter and a second voltage parameter; both the first voltage parameter and the second voltage parameter can be determined according to actual conditions and are not limited here. As an example, the first voltage parameter may include a first voltage value; the second voltage parameter may include a second voltage value.

[0124] The current parameter includes a first current parameter and a second current parameter; both the first current parameter and the second current parameter can be determined according to actual conditions and are not limited here. As an example, the first current parameter can include a first current value; the second current parameter can include a second current value.

[0125] The target temperature can be determined according to actual conditions and is not limited here. As an example, the target temperature can be understood as a set temperature.

[0126] The fact that the first temperature value is greater than the target temperature can be understood as the difference between the target temperature and the first temperature value of the first sensor is less than zero. In practical applications, this indicates that the process needs to be cooled.

[0127] The first temperature value being less than or equal to the target temperature can be understood as the difference between the target temperature and the first temperature value of the first sensor being greater than or equal to 0. In practical applications, this indicates that the process does not require cooling.

[0128] The first duty cycle and the second duty cycle are different; wherein the first duty cycle and the second duty cycle can be determined according to actual conditions and are not limited here. As an example, the first duty cycle and the second duty cycle can both be 0, a negative number, or a positive number.

[0129] The specific determination process in determining the first voltage parameter or the first current parameter based on the PWM signal of the first duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the first voltage parameter or the first current parameter based on the PWM signal of the first duty cycle can be converting the PWM signal of the first duty cycle into the first voltage parameter or the first current parameter.

[0130] The specific determination process in determining the second voltage parameter or the second current parameter based on the PWM signal of the second duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the second voltage parameter or the second current parameter based on the PWM signal of the second duty cycle can be converting the PWM signal of the second duty cycle into the second voltage parameter or the second current parameter.

[0131] In practical applications, as an example, the temperature of the first sensor is used as the first input signal for the switch control of the fan. When the difference between the target temperature and the temperature of the first sensor is less than 0, it indicates that the temperature should be lowered, and the fan is turned on and operated at the maximum air volume. When the difference between the target temperature and the temperature of the first sensor is greater than or equal to 0, the fan is turned off.

[0132] In an optional embodiment of the present application, the voltage parameter includes a third voltage parameter, a fourth voltage parameter and a fifth voltage parameter; the current parameter includes a third current parameter, a fourth current parameter and a fifth current parameter;

[0133] The MCU 1032 is further used to determine whether the second temperature value is greater than a first threshold or less than a second threshold; the second threshold is greater than the first threshold; the first threshold and the second threshold are both related to the volume of the heat dissipation component; when the second temperature value is less than or equal to the first threshold, the PWM signal of the third duty cycle is determined; when the second temperature value is greater than the first threshold or less than the second threshold, the PWM signal of the fourth duty cycle is determined; when the second temperature value is greater than or equal to the second threshold, the PWM signal of the fifth duty cycle is determined; the third duty cycle, the fourth duty cycle and the fifth duty cycle are different;

[0134] The driving circuit 1033 is also used to determine the third voltage parameter or the third current parameter based on the PWM signal of the third duty cycle; and to determine the fourth voltage parameter or the fourth current parameter based on the PWM signal of the fourth duty cycle; and to determine the fifth voltage parameter or the fifth current parameter based on the PWM signal of the fifth duty cycle; the third voltage parameter or the third current parameter is used to control the working state of the fan 108 to stop working; the fourth voltage parameter or the fourth current parameter is used to control the working state of the fan 108 to have a minimum air volume; the fifth voltage parameter or the fifth current parameter is used to control the working state of the fan 108 to have a maximum air volume.

[0135] It should be noted that the voltage parameter includes a third voltage parameter, a fourth voltage parameter and a fifth voltage parameter; the third voltage parameter, the fourth voltage parameter and the fifth voltage parameter can all be determined according to actual conditions and are not limited here. As an example, the third voltage parameter may include a third voltage value; the fourth voltage parameter may include a fourth voltage value; and the fifth voltage parameter may include a fifth voltage value.

[0136] The current parameter includes a third current parameter, a fourth current parameter, and a fifth current parameter; the third current parameter, the fourth current parameter, and the fifth current parameter can all be determined according to actual conditions and are not limited here. As an example, the third current parameter may include a third current value; the fourth current parameter may include a fourth current value; and the fifth current parameter may include a fifth current value.

[0137] The first threshold and the second threshold can be determined according to actual conditions, and are not limited here. As an example, the first threshold can be a set threshold of -3°C; the second threshold can be a set threshold of +3°C; wherein the set threshold can be determined according to actual conditions.

[0138] The first threshold and the second threshold are both related to the volume of the heat dissipation component; wherein, the first threshold and the second threshold can be obtained through accurate thermodynamic simulation, or the heat dissipation capacity of the radiator can be adjusted through temperature based on experience. In practical applications, as an example, the radiator temperature threshold is determined, the temperature in the reaction tube is controlled to 95°C, the temperature is constant for 1000s, the temperature of the radiator and the temperature in the tube are monitored, and the temperature of the radiator is checked when the temperature in the tube drops to 94.5°C. The temperature is used as the threshold of the radiator temperature. When the temperature is greater than this temperature, the fan is turned on to the maximum to help the radiator dissipate heat quickly. The threshold range is related to the volume of the radiator, generally within the range of 40 to 50°C. It can be obtained through accurate thermodynamic simulation, or the heat dissipation capacity of the radiator can be adjusted through temperature based on experience.

[0139] The third duty cycle, the fourth duty cycle and the fifth duty cycle are different; wherein the third duty cycle, the fourth duty cycle and the fifth duty cycle can be determined according to actual conditions and are not limited here. As an example, the third duty cycle, the fourth duty cycle and the fifth duty cycle can all be 0, a negative number or a positive number.

[0140] The specific determination process in determining the third voltage parameter or the third current parameter based on the PWM signal of the third duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the third voltage parameter or the third current parameter based on the PWM signal of the third duty cycle can be converting the PWM signal of the third duty cycle into the third voltage parameter or the third current parameter.

[0141] The specific determination process in determining the fourth voltage parameter or the fourth current parameter based on the PWM signal of the fourth duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the fourth voltage parameter or the fourth current parameter based on the PWM signal of the fourth duty cycle can be converting the PWM signal of the fourth duty cycle into the fourth voltage parameter or the fourth current parameter.

[0142] The specific determination process in determining the fifth voltage parameter or the fifth current parameter based on the PWM signal of the fifth duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the fifth voltage parameter or the fifth current parameter based on the PWM signal of the fifth duty cycle can be converting the PWM signal of the fifth duty cycle into the fifth voltage parameter or the fifth current parameter.

[0143] The third voltage parameter or the third current parameter is used to control the working state of the fan 108 to stop working; wherein, the stopping working can be understood as the fan being turned off.

[0144] The fourth voltage parameter or the fourth current parameter is used to control the working state of the fan 108 to have a minimum air volume; wherein, the minimum air volume can be understood as the fan air volume being set to a minimum.

[0145] The fifth voltage parameter or the fifth current parameter is used to control the working state of the fan 108 to have a maximum air volume. The maximum air volume can be understood as the fan air volume being turned to the maximum.

[0146] In practical applications, as an example, a second sensor is used to collect the temperature on the radiator to control the fan air volume. The fan is also controlled by PWM. The electrical signal of the second sensor is converted into a digital signal by ADC, and then converted into a temperature value by MCU calculation. After judging that the second sensor enters the range of [threshold -3℃, threshold +3℃], the fan starts to work. When the sensor temperature is lower than the threshold -3℃, the fan is turned off; when the difference between the sensor temperature value and the threshold is within [-3℃, 3℃], the output duty cycle is calculated according to PID, and converted into the corresponding voltage value or current value added to the fan through the drive circuit; when the sensor temperature is greater than the threshold +3℃, the fan air volume is opened to the maximum. In this way, the radiator temperature can be stably controlled within the range of [threshold -3℃, threshold +3℃], ensuring that the heat dissipation capacity of the radiator is relatively stable, so that the rate of heating and cooling each time can be relatively consistent.

[0147] In an optional embodiment of the present application, the at least one heating component 101 includes a first heating component 1011 and a second heating component 1012; the at least one first sensor 104 includes a first temperature sensor 1041 and a second temperature sensor 1042; the first temperature sensor 1041 is connected to the first heating component 1011; the second temperature sensor 1042 is connected to the second heating component 1012; the first temperature signal includes a first temperature sub-signal and a second temperature sub-signal;

[0148] The first temperature sensor 1041 is used to collect the first temperature sub-signal of the first heating component 1011;

[0149] The second temperature sensor 1042 is used to collect the second temperature sub-signal of the second heating component 1012 .

[0150] It should be noted that the first heating component 1011 and the second heating component 1012 can be determined according to actual conditions and are not limited here. As an example, the first heating component 1011 and the second heating component 1012 can both be heating elements. In practical applications, the first heating component 1011 can be called heating element 1; the second heating component 1012 can be called heating element 2.

[0151] The first temperature sensor 1041 and the second temperature sensor 1042 can be determined according to actual conditions and are not limited here. In practical applications, the first temperature sensor 1041 can also be called sensor 1; the second temperature sensor 1042 can also be called sensor 2.

[0152] The first temperature sensor 1041 is connected to the first heating component 1011; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi connection.

[0153] The second temperature sensor 1042 is connected to the second heating component 1012; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi connection, can be used.

[0154] The first temperature sensor 1041 collects the first temperature sub-signal of the first heating component 1011 .

[0155] The second temperature sensor 1042 collects the second temperature sub-signal of the second heating component 1012 .

[0156] In practical applications, sensor 1 and sensor 2 are used to collect the temperatures on heating element 1 and heating element 2 respectively, which are used as target temperature control.

[0157] In an optional embodiment of the present application, the at least one heat dissipation component 105 includes a first heat dissipation component 1051 and a second heat dissipation component 1052; the at least one second sensor 106 includes a third temperature sensor 1061 and a fourth temperature sensor 1062; the third temperature sensor 1061 is connected to the first heat dissipation component 1051; the fourth temperature sensor 1062 is connected to the second heat dissipation component 1052; the second temperature signal includes a third temperature sub-signal and a fourth temperature sub-signal;

[0158] The third temperature sensor 1061 is used to collect the third temperature sub-signal of the first heat dissipation component 1051;

[0159] The fourth temperature sensor 1062 is used to collect the fourth temperature sub-signal of the second heat dissipation component 1052 .

[0160] It should be noted that the first heat dissipation component 1051 and the second heat dissipation component 1052 can be determined according to actual conditions and are not limited here. As an example, the first heat dissipation component 1051 and the second heat dissipation component 1052 can both be radiators. In practical applications, the first heat dissipation component 1051 can also be called radiator 1; the second heat dissipation component 1052 can also be called radiator 2.

[0161] The third temperature sensor 1061 and the fourth temperature sensor 1062 can be determined according to actual conditions and are not limited here. In practical applications, the third temperature sensor 1061 can also be called sensor 3; the fourth temperature sensor 1062 can also be called sensor 4.

[0162] The third temperature sensor 1061 is connected to the first heat dissipation component 1051; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi connection.

[0163] The fourth temperature sensor 1062 is connected to the second heat dissipation component 1052; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi connection.

[0164] The third temperature sensor 1061 collects the third temperature sub-signal of the first heat dissipation component 1051;

[0165] The fourth temperature sensor 1062 collects the fourth temperature sub-signal of the second heat dissipation component 1052 .

[0166] In practical applications, sensor 3 and sensor 4 are used to collect the temperature on radiator 1 and radiator 2 respectively, which are used to control the air volume of the fan.

[0167] In an optional embodiment of the present application, the control component 103 is further used to control the working state of the fan 108 based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal.

[0168] It should be noted that the specific control process in controlling the working state of the fan 108 based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal can be determined according to actual conditions and is not limited here. As an example, controlling the working state of the fan 108 based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal may include controlling the working state of the fan 108 based on the first temperature sub-signal and the second temperature sub-signal; or, controlling the working state of the fan 108 based on the third temperature sub-signal and the fourth temperature sub-signal; or, controlling the working state of the fan 108 based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and the fourth temperature sub-signal.

[0169] In actual applications, during the cooling process, the temperature of sensor 1 and sensor 2 is used as the first input signal for the fan switch control. When the difference between the target temperature and the temperature of sensor 1 and sensor 2 is less than 0, it means that the temperature should be cooled. At this time, the fan is turned on and runs at the maximum air volume. When the difference between the target temperature and the temperature of sensor 1 or sensor 2 is greater than or equal to 0, the fan is turned off.

[0170] Sensor 3 and sensor 4 are used to collect the temperature on radiator 1 and radiator 2 respectively, which are used to control the fan air volume. The fan also uses PWM control. The electrical signals of sensors 3 and 4 are converted into digital signals through ADC, and then converted into temperature values ​​through MCU calculation. After judging that any one of sensor 3 or sensor 4 enters the range of [threshold -3℃, threshold +3℃], the fan starts to work. When the sensor temperature is lower than the threshold -3℃, the fan is turned off; when the difference between the sensor temperature value and the threshold is within [-3℃, 3℃], the output duty cycle is calculated according to PID, and converted into the corresponding voltage value or current value added to the fan through the drive circuit; when the sensor temperature is greater than the threshold +3℃, the fan air volume is opened to the maximum. In this way, the radiator temperature can be stably controlled within the range of [threshold -3℃, threshold +3℃], ensuring that the heat dissipation capacity of the radiator is relatively stable, so that the rate of heating and cooling can be relatively consistent each time.

[0171] During the cooling process, the temperature of sensor 1 and sensor 2 is used as the first input signal for the fan switch control. When the difference between the target temperature and the temperature of sensor 1 and sensor 2 is less than 0, it means that the cooling should be carried out. At this time, the fan is turned on and runs at the maximum air volume. When the difference between the target temperature and the temperature of sensor 1 or sensor 2 is greater than or equal to 0, the fan is turned off. In addition, radiator sensor 3 and sensor 4 are used as the second input signal for fan control. After judging that any one of sensor 3 or sensor 4 enters the range of [threshold -3℃, threshold +3℃], the fan starts to work. When the sensor temperature is lower than the threshold -3℃, the fan is turned off; when the difference between the sensor temperature value and the threshold is within [-3℃, 3℃], the output duty cycle is calculated according to PID, and converted into the corresponding voltage value or current value added to the fan through the drive circuit; when the sensor temperature is greater than the threshold +3℃, the fan air volume is turned on to the maximum. The first input signal is the highest priority, and the second input signal has the second priority. When the trigger conditions of the first input signal and the trigger conditions of the second input signal are met at the same time, the processing logic of the first input signal is executed.

[0172] In an optional embodiment of the present application, the first temperature sub-signal corresponds to a first digital sub-signal; the second temperature sub-signal corresponds to a second digital sub-signal; the third temperature sub-signal corresponds to a third digital sub-signal; the fourth temperature sub-signal corresponds to a fourth digital sub-signal;

[0173] The ADC 1031 is further configured to convert the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain a first digital sub-signal corresponding to the first temperature sub-signal, a second digital sub-signal corresponding to the second temperature sub-signal, a third digital sub-signal corresponding to the third temperature sub-signal and / or a fourth digital sub-signal corresponding to the fourth temperature sub-signal;

[0174] The MCU 1032 is further configured to determine the first temperature value based on the first digital sub-signal and / or the second digital sub-signal and to determine the second temperature value based on the third digital sub-signal and / or the fourth digital sub-signal.

[0175] It should be noted that the specific conversion processing process of converting the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain the first digital sub-signal corresponding to the first temperature sub-signal, the second digital sub-signal corresponding to the second temperature sub-signal, the third digital sub-signal corresponding to the third temperature sub-signal and / or the fourth digital sub-signal corresponding to the fourth temperature sub-signal can be determined according to actual conditions and is not limited here. As an example, the conversion processing of the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain the first digital sub-signal corresponding to the first temperature sub-signal, the second digital sub-signal corresponding to the second temperature sub-signal, the third digital sub-signal corresponding to the third temperature sub-signal and / or the fourth digital sub-signal corresponding to the fourth temperature sub-signal can be performed by analog-to-digital conversion processing on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain the first digital sub-signal corresponding to the first temperature sub-signal, the second digital sub-signal corresponding to the second temperature sub-signal, the third digital sub-signal corresponding to the third temperature sub-signal and / or the fourth digital sub-signal corresponding to the fourth temperature sub-signal.

[0176] The specific determination process in determining the first temperature value based on the first digital signal sub-signal and / or the second digital sub-signal can be determined according to actual conditions and is not limited here. As an example, determining the first temperature value based on the first digital signal sub-signal and / or the second digital sub-signal can be calculating the first temperature value based on the first digital signal sub-signal and / or the second digital sub-signal.

[0177] The specific determination process in determining the second temperature value based on the third digital sub-signal and / or the fourth digital sub-signal can be determined according to actual conditions and is not limited here. As an example, determining the second temperature value based on the third digital sub-signal and / or the fourth digital sub-signal can be calculating the second temperature value based on the third digital sub-signal and / or the fourth digital sub-signal.

[0178] In an optional embodiment of the present invention, the ADC 1031 includes:

[0179] A processor 10311 for determining the first digital signal and / or the second digital signal based on the first temperature signal and / or the second temperature signal.

[0180] The processor may be determined according to actual conditions and is not limited here.

[0181] The specific determination process in determining the first digital signal and / or the second digital signal based on the first temperature signal and / or the second temperature signal can be determined according to actual conditions and is not limited here. As an example, the determination of the first digital signal and / or the second digital signal based on the first temperature signal and / or the second temperature signal can be to perform analog-to-digital conversion processing on the first temperature signal and / or the second temperature signal to obtain a first digital signal corresponding to the first temperature signal and / or a second digital signal corresponding to the second temperature signal.

[0182] In an optional embodiment of the present invention, the MCU 1032 includes:

[0183] A controller 10321 is used to control the PWM signal based on the first temperature value and / or the second temperature value.

[0184] The controller can be determined according to actual conditions and is not limited here.

[0185] The specific control process in controlling the PWM signal based on the first temperature value and / or the second temperature value can be determined according to actual conditions and is not limited here. As an example, the control of the PWM signal based on the first temperature value and / or the second temperature value can be a PWM signal with different duty cycles controlled based on the first temperature value and / or the second temperature value.

[0186] For ease of understanding, the PCR control device is specifically a PCR constant temperature control device. This device adds a temperature sensor to the radiator to monitor the temperature of the radiator as another input to the temperature control system. At the same time, the temperature control sensor in the TEC and the temperature sensor on the radiator are used as inputs to form a new control method for the system to reach stability. This content can be combined with Figure 6 To understand, Figure 6 Schematic diagram of a heating TEC element and its temperature sensor in a PCR control device in an embodiment of the present application.

[0187] 1) Hardware form:

[0188] The temperature control module structure of the present invention can be combined with Figure 7 , Figure 8 , Fig. 9 As shown, Figure 7 This is a schematic diagram of an application scenario of the PCR control device in the embodiment of the present application; Figure 8 This is a schematic diagram of another application scenario of the PCR control device in the embodiment of the present application; Fig. 9 Schematic diagram of the hardware form of the PCR module temperature control component in the embodiment of the present application. Figure 7 The heat dissipation component 105, the heating component 101 and the reaction tube 102 are exemplified in the figure; in practical applications, the heat dissipation component 105 may be a radiator; the heating component 101 may be a TEC, and the TEC may include a TEC-A surface and a TEC-B surface. As an example, a lower surface of the TEC may be understood as a TEC-A surface, and an upper surface of the TEC may be understood as a TEC-A surface. Figure 8 The first heating component 1011, the second heating component 1012, the reaction tube 102, the heat dissipation component 105 and the second sensor 106 are exemplified; in practical applications, the first heating component 1011 can also be called heating element 1; the second heating component 1012 can also be called heating element 2; the heat dissipation component 105 can specifically be a radiator; the second sensor 106 can specifically be understood as a temperature sensor corresponding to the radiator, and can also be referred to as a radiator temperature sensor. Fig. 9 The hardware form of the temperature control component of the PCR module includes a heating module and a reaction chamber.

[0189] The dark black ones are all radiators, the two tubes are TEC (heating elements), the rightmost one is the fan, and the reaction tube between the two heating elements. In other words, this is double-sided heating, with heating elements and radiators on the top and bottom.

[0190] 2) Hardware control:

[0191] The temperature control module in this application collects the temperature of the sensor on the heating element and the temperature of the temperature sensor on the radiator as input. Fig.10 To understand, Fig.10 Schematic diagram of hardware control in the PCR control device in the embodiment of the present application.

[0192] Sensor 1 and sensor 2 are used to collect the temperature on heating element 1 and heating element 2 respectively, which are used as target temperature control. The two heating elements are controlled independently, and the temperature electrical signal of sensor 1 is converted into a digital signal by ADC, and then converted into a temperature value by calculation by MCU. After setting the target temperature, MCU uses the sensor temperature value as input through PID algorithm, and calculates and outputs the PWM duty cycle. If the duty cycle is 0 or negative, the circuit always outputs a low level, and the heating sensor does not heat. If the duty cycle is positive, the corresponding PWM waveform is output, which is converted into the corresponding voltage value or current value added to the heating element by the driving circuit, and the heating is generated by generating thermal power. According to the working principle of TEC, during the heating process, the heat is concentrated on the side of the reaction tube, and the temperature of the side close to the radiator will decrease a little; during the cooling process, the heat will be concentrated on the side close to the radiator, and the temperature of the radiator will increase at this time; if there are often multiple heating and cooling cycles, the temperature on the radiator will continue to rise, thereby reducing the heat dissipation capacity; because TEC heats up and down very quickly, if the fan is turned on and off according to the target temperature reached by sensor 1 or sensor 2 during the cooling process, it cannot meet its stable heating and cooling rate and constant temperature range.

[0193] Solution 1 uses sensors 3 and 4 to collect the temperature on radiator 1 and radiator 2 respectively, which are used to control the fan air volume. The fan also uses PWM control. The electrical signals of sensors 3 and 4 are converted into digital signals through ADC, and then converted into temperature values ​​through MCU calculation. After judging that any one of sensor 3 or sensor 4 enters the range of [threshold -3℃, threshold +3℃], the fan starts to work. When the sensor temperature is lower than the threshold -3℃, the fan is turned off; when the difference between the sensor temperature value and the threshold is within [-3℃, 3℃], the output duty cycle is calculated according to PID, and converted into the corresponding voltage value or current value added to the fan through the drive circuit; when the sensor temperature is greater than the threshold +3℃, the fan air volume is opened to the maximum. In this way, the radiator temperature can be stably controlled within the range of [threshold -3℃, threshold +3℃], ensuring that the heat dissipation capacity of the radiator is relatively stable, so that the rate of heating and cooling can be relatively consistent each time.

[0194] In the cooling process, the temperature of sensor 1 and sensor 2 is used as the first input signal for fan switch control. When the difference between the target temperature and the temperature of sensor 1 and sensor 2 is less than 0, it means that cooling should be carried out. At this time, the fan is turned on and runs at the maximum air volume. When the difference between the target temperature and the temperature of sensor 1 or sensor 2 is greater than or equal to 0, the fan is turned off. In addition, radiator sensor 3 and sensor 4 are used as the second input signal for fan control. After judging that any one of sensor 3 or sensor 4 enters the range of [threshold -3℃, threshold +3℃], the fan starts to work. When the sensor temperature is lower than the threshold -3℃, the fan is turned off; when the difference between the sensor temperature value and the threshold is within [-3℃, 3℃], the output duty cycle is calculated according to PID, and converted into the corresponding voltage value or current value added to the fan through the drive circuit; when the sensor temperature is greater than the threshold +3℃, the fan air volume is turned on to the maximum. The first input signal is the highest priority, and the second input signal has the second priority. When the trigger conditions of the first input signal and the trigger conditions of the second input signal are met at the same time, the processing logic of the first input signal is executed.

[0195] This content can be combined Fig.11 To understand, Fig.11 It is a comparison diagram of the common control and the control in this application; Fig.11 In the figure, the upper figure is a schematic diagram of ordinary control, and the lower figure is a schematic diagram of the control in this application.

[0196] 3) Software control (before leaving the factory):

[0197] The radiator temperature threshold is determined. The temperature inside the reaction tube is controlled to 95°C and kept constant for 1000s. The temperature of the radiator and the temperature inside the tube are monitored. The temperature of the radiator is checked when the temperature inside the tube drops to 94.5°C. This is used as the radiator temperature threshold. When the temperature is greater than this, the fan is turned on at maximum speed to help the radiator dissipate heat quickly.

[0198] The threshold range is related to the volume of the heat sink, and is generally within the range of 40-50°C. It can also be obtained through accurate thermodynamic simulation, but it is basically difficult. Generally, the heat sink's heat dissipation capacity is adjusted based on experience. This content can be combined with Fig.12 To understand, Fig.12 Schematic diagram for heat sink temperature threshold determination.

[0199] 4) Temperature control logic (operating conditions).

[0200] This content can be combined Fig.13 To understand, Fig.13 This is a schematic diagram of the temperature control logic of an embodiment of the present application.

[0201] In order to facilitate understanding of the embodiments of the present application, Fig.14 and Fig.15 To understand, Fig.14 A schematic diagram of a printed circuit board (PCB) of a PCR control device in an embodiment of the present application; Fig.15 Schematic diagram of a controller and a processor in a PCR control device in an embodiment of the present application.

[0202] Based on the above-mentioned PCR control device 100, the present application further provides a PCR control method, which is applied to the above-mentioned PCR control device 100. Fig.16 FIG. 1 is a schematic diagram of a PCR control method according to an embodiment of the present application. Fig.16 As shown, the method includes:

[0203] Step S1601, collecting a first temperature signal of a heating component and a second temperature signal of a heat dissipation component.

[0204] Step S1602: Control the working state of the fan based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube.

[0205] In step S1601, collecting the first temperature signal of the heating component can be understood as one heating component corresponds to one first sensor, and each first sensor collects the first temperature signal of the corresponding heating component.

[0206] The acquiring of the second temperature signal of the heat dissipation component may be understood as one heat dissipation component corresponds to one second sensor, and each second sensor acquires the second temperature signal of the corresponding heat dissipation component.

[0207] In step S1602, the working state of the fan is controlled based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube; wherein, the working state of the fan controlled based on the first temperature signal and / or the second temperature signal can be understood as controlling the working state of the fan based on the first temperature signal, or controlling the working state of the fan based on the second temperature signal, or controlling the working state of the fan based on the first temperature signal and the second temperature signal. The working state can be determined according to actual conditions and is not limited here. As an example, the working state may include stopping work, minimum air volume, and maximum air volume.

[0208] In the embodiment of the present application, the first temperature signal of the heating component is collected; the second temperature signal of the heat dissipation component is collected; and the working state of the fan is controlled based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube. That is, the working state of the fan is controlled based on the first temperature signal of the heating component and / or the second temperature signal of the heat dissipation component is collected to stabilize the temperature in the reaction tube, thereby solving the problem of attenuation of the average heating and cooling rate and stabilizing the temperature in the reaction tube at a very fast rate.

[0209] In an optional embodiment of the present application, controlling the working state of the fan based on the first temperature signal and / or the second temperature signal includes:

[0210] Converting the first temperature signal and / or the second temperature signal to obtain a first digital signal corresponding to the first temperature signal and / or a second digital signal corresponding to the second temperature signal;

[0211] determining a first temperature value based on the first digital signal and a second temperature value based on the second digital signal; determining a PWM signal based on the first temperature value and / or the second temperature value;

[0212] A voltage parameter or a current parameter of the fan is determined based on the PWM signal; the voltage parameter or the current parameter is used to control the working state of the fan.

[0213] It should be noted that the specific conversion process of converting the first temperature signal and / or the second temperature signal to obtain the first digital signal corresponding to the first temperature signal and / or the second digital signal corresponding to the second temperature signal can be determined according to actual conditions and is not limited here. As an example, the conversion process of the first temperature signal and / or the second temperature signal to obtain the first digital signal corresponding to the first temperature signal and / or the second digital signal corresponding to the second temperature signal can be analog-to-digital conversion processing of the first temperature signal and / or the second temperature signal to obtain the first digital signal corresponding to the first temperature signal and / or the second digital signal corresponding to the second temperature signal.

[0214] The specific determination process in determining the first temperature value based on the first digital signal can be determined according to actual conditions and is not limited here. As an example, determining the first temperature value based on the first digital signal can be calculating the first temperature value based on the first digital signal.

[0215] The specific determination process in determining the second temperature value based on the second digital signal can be determined according to actual conditions and is not limited here. As an example, determining the second temperature value based on the second digital signal can be calculating the second temperature value based on the second digital signal.

[0216] The specific determination process in determining the PWM signal based on the first temperature value and / or the second temperature value can be determined according to actual conditions and is not limited here. As an example, the PWM signal determined based on the first temperature value and / or the second temperature value can be a PWM signal with different duty cycles calculated based on the first temperature value and / or the second temperature value.

[0217] The specific determination process of determining the voltage parameter or current parameter of the fan based on the PWM signal can be determined according to actual conditions and is not limited here. As an example, the PWM signal is converted into the voltage parameter or current parameter of the fan. In practical applications, the voltage parameter may include a voltage value; the current parameter may include a current value.

[0218] The voltage parameter or current parameter is used to control the working state of the fan. The working state can be determined according to actual conditions and is not limited here. As an example, the working state can include stopping working, minimum air volume, and maximum air volume.

[0219] In an optional embodiment of the present application, the voltage parameter includes a first voltage parameter and a second voltage parameter; the current parameter includes a first current parameter and a second current parameter; and determining the PWM signal based on the first temperature value includes:

[0220] Determining whether the first temperature value is greater than a preset target temperature;

[0221] When the first temperature value is greater than the target temperature, determining the PWM signal with a first duty cycle;

[0222] When the first temperature value is less than or equal to the target temperature, determining the PWM signal of a second duty cycle; the first duty cycle and the second duty cycle are different;

[0223] Correspondingly, determining the voltage parameter or current parameter of the fan based on the PWM signal includes:

[0224] The first voltage parameter or the first current parameter is determined based on the PWM signal of the first duty cycle, and the second voltage parameter or the second current parameter is determined based on the PWM signal of the second duty cycle; the first voltage parameter or the first current parameter is used to control the working state of the fan to have a maximum air volume; the second voltage parameter or the second current parameter is used to control the working state of the fan to stop working.

[0225] It should be noted that the voltage parameter includes a first voltage parameter and a second voltage parameter; both the first voltage parameter and the second voltage parameter can be determined according to actual conditions and are not limited here. As an example, the first voltage parameter may include a first voltage value; the second voltage parameter may include a second voltage value.

[0226] The current parameter includes a first current parameter and a second current parameter; both the first current parameter and the second current parameter can be determined according to actual conditions and are not limited here. As an example, the first current parameter can include a first current value; the second current parameter can include a second current value.

[0227] The target temperature can be determined according to actual conditions and is not limited here. As an example, the target temperature can be understood as a set temperature.

[0228] The fact that the first temperature value is greater than the target temperature can be understood as the difference between the target temperature and the first temperature value of the first sensor is less than zero. In practical applications, this indicates that the process needs to be cooled.

[0229] The first temperature value being less than or equal to the target temperature can be understood as the difference between the target temperature and the first temperature value of the first sensor being greater than or equal to 0. In practical applications, this indicates that the process does not require cooling.

[0230] The first duty cycle and the second duty cycle are different; wherein the first duty cycle and the second duty cycle can be determined according to actual conditions and are not limited here. As an example, the first duty cycle and the second duty cycle can both be 0, a negative number, or a positive number.

[0231] The specific determination process in determining the first voltage parameter or the first current parameter based on the PWM signal of the first duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the first voltage parameter or the first current parameter based on the PWM signal of the first duty cycle can be converting the PWM signal of the first duty cycle into the first voltage parameter or the first current parameter.

[0232] The specific determination process in determining the second voltage parameter or the second current parameter based on the PWM signal of the second duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the second voltage parameter or the second current parameter based on the PWM signal of the second duty cycle can be converting the PWM signal of the second duty cycle into the second voltage parameter or the second current parameter.

[0233] In practical applications, as an example, the temperature of the first sensor is used as the first input signal for the switch control of the fan. When the difference between the target temperature and the temperature of the first sensor is less than 0, it indicates that the temperature should be lowered, and the fan is turned on and operated at the maximum air volume. When the difference between the target temperature and the temperature of the first sensor is greater than or equal to 0, the fan is turned off.

[0234] In an optional embodiment of the present application, the voltage parameter includes a third voltage parameter, a fourth voltage parameter and a fifth voltage parameter; the current parameter includes a third current parameter, a fourth current parameter and a fifth current parameter; and determining the PWM signal based on the second temperature value includes:

[0235] Determining whether the second temperature value is greater than a first threshold or less than a second threshold;

[0236] The second threshold is greater than the first threshold; the first threshold and the second threshold are both related to the volume of the heat dissipation component;

[0237] When the second temperature value is less than or equal to the first threshold, determining the PWM signal with a third duty cycle;

[0238] When the second temperature value is greater than the first threshold or less than the second threshold, determining the PWM signal of a fourth duty cycle; when the second temperature value is greater than or equal to the second threshold, determining the PWM signal of a fifth duty cycle; the third duty cycle, the fourth duty cycle and the fifth duty cycle are different;

[0239] Correspondingly, determining the voltage parameter or current parameter of the fan based on the PWM signal includes:

[0240] The third voltage parameter or the third current parameter is determined based on the PWM signal of the third duty cycle; and the fourth voltage parameter or the fourth current parameter is determined based on the PWM signal of the fourth duty cycle; and the fifth voltage parameter or the fifth current parameter is determined based on the PWM signal of the fifth duty cycle; the third voltage parameter or the third current parameter is used to control the working state of the fan to stop working; the fourth voltage parameter or the fourth current parameter is used to control the working state of the fan to have a minimum air volume; the fifth voltage parameter or the fifth current parameter is used to control the working state of the fan to have a maximum air volume.

[0241] It should be noted that the voltage parameter includes a third voltage parameter, a fourth voltage parameter and a fifth voltage parameter; the third voltage parameter, the fourth voltage parameter and the fifth voltage parameter can all be determined according to actual conditions and are not limited here. As an example, the third voltage parameter may include a third voltage value; the fourth voltage parameter may include a fourth voltage value; and the fifth voltage parameter may include a fifth voltage value.

[0242] The current parameter includes a third current parameter, a fourth current parameter, and a fifth current parameter; the third current parameter, the fourth current parameter, and the fifth current parameter can all be determined according to actual conditions and are not limited here. As an example, the third current parameter may include a third current value; the fourth current parameter may include a fourth current value; and the fifth current parameter may include a fifth current value.

[0243] The first threshold and the second threshold can be determined according to actual conditions, and are not limited here. As an example, the first threshold can be a set threshold of -3°C; the second threshold can be a set threshold of +3°C; wherein the set threshold can be determined according to actual conditions.

[0244] The first threshold and the second threshold are both related to the volume of the heat dissipation component; wherein, the first threshold and the second threshold can be obtained through accurate thermodynamic simulation, or the heat dissipation capacity of the radiator can be adjusted through temperature based on experience. In practical applications, as an example, the radiator temperature threshold is determined, the temperature in the reaction tube is controlled to 95°C, the temperature is constant for 1000s, the temperature of the radiator and the temperature in the tube are monitored, and the temperature of the radiator is checked when the temperature in the tube drops to 94.5°C. The temperature is used as the threshold of the radiator temperature. When the temperature is greater than this temperature, the fan is turned on to the maximum to help the radiator dissipate heat quickly. The threshold range is related to the volume of the radiator, generally within the range of 40 to 50°C. It can be obtained through accurate thermodynamic simulation, or the heat dissipation capacity of the radiator can be adjusted through temperature based on experience.

[0245] The third duty cycle, the fourth duty cycle and the fifth duty cycle are different; wherein the third duty cycle, the fourth duty cycle and the fifth duty cycle can be determined according to actual conditions and are not limited here. As an example, the third duty cycle, the fourth duty cycle and the fifth duty cycle can all be 0, a negative number or a positive number.

[0246] The specific determination process in determining the third voltage parameter or the third current parameter based on the PWM signal of the third duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the third voltage parameter or the third current parameter based on the PWM signal of the third duty cycle can be converting the PWM signal of the third duty cycle into the third voltage parameter or the third current parameter.

[0247] The specific determination process in determining the fourth voltage parameter or the fourth current parameter based on the PWM signal of the fourth duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the fourth voltage parameter or the fourth current parameter based on the PWM signal of the fourth duty cycle can be converting the PWM signal of the fourth duty cycle into the fourth voltage parameter or the fourth current parameter.

[0248] The specific determination process in determining the fifth voltage parameter or the fifth current parameter based on the PWM signal of the fifth duty cycle can be determined according to actual conditions and is not limited here. As an example, determining the fifth voltage parameter or the fifth current parameter based on the PWM signal of the fifth duty cycle can be converting the PWM signal of the fifth duty cycle into the fifth voltage parameter or the fifth current parameter.

[0249] The third voltage parameter or the third current parameter is used to control the working state of the fan to stop working; wherein, the stopping working can be understood as the fan being turned off.

[0250] The fourth voltage parameter or the fourth current parameter is used to control the working state of the fan to have a minimum air volume; wherein, the minimum air volume can be understood as the fan air volume being set to a minimum.

[0251] The fifth voltage parameter or the fifth current parameter is used to control the working state of the fan to have a maximum air volume, wherein the maximum air volume can be understood as the fan air volume being turned to the maximum.

[0252] In practical applications, as an example, a second sensor is used to collect the temperature on the radiator to control the fan air volume. The fan is also controlled by PWM. The electrical signal of the second sensor is converted into a digital signal by ADC, and then converted into a temperature value by MCU calculation. After judging that the second sensor enters the range of [threshold -3℃, threshold +3℃], the fan starts to work. When the sensor temperature is lower than the threshold -3℃, the fan is turned off; when the difference between the sensor temperature value and the threshold is within [-3℃, 3℃], the output duty cycle is calculated according to PID, and converted into the corresponding voltage value or current value added to the fan through the drive circuit; when the sensor temperature is greater than the threshold +3℃, the fan air volume is opened to the maximum. In this way, the radiator temperature can be stably controlled within the range of [threshold -3℃, threshold +3℃], ensuring that the heat dissipation capacity of the radiator is relatively stable, so that the rate of heating and cooling each time can be relatively consistent.

[0253] In an optional embodiment of the present application, the first temperature signal includes a first temperature sub-signal and a second temperature sub-signal; and collecting the first temperature signal of the corresponding heating component includes:

[0254] The first temperature sub-signal of the first heating component and the second temperature sub-signal of the second heating component are collected.

[0255] In this embodiment, the first temperature sub-signal and the second temperature sub-signal can be determined according to actual conditions and are not limited here.

[0256] In an optional embodiment of the present application, the second temperature signal includes a third temperature sub-signal and a fourth temperature sub-signal; and collecting the second temperature signal of the corresponding heat dissipation component includes:

[0257] The third temperature sub-signal of the first heat dissipation component and the fourth temperature sub-signal of the second heat dissipation component are collected.

[0258] It should be noted that both the third temperature sub-signal and the fourth temperature sub-signal can be determined according to actual conditions and are not limited here.

[0259] In an optional embodiment of the present application, controlling the working state of the fan based on the first temperature signal and / or the second temperature signal includes:

[0260] The operating state of the fan is controlled based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal.

[0261] It should be noted that the specific control process in controlling the working state of the fan based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal can be determined according to actual conditions and is not limited here. As an example, controlling the working state of the fan based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal may include controlling the working state of the fan based on the first temperature sub-signal and the second temperature sub-signal; or, controlling the working state of the fan based on the third temperature sub-signal and the fourth temperature sub-signal; or, controlling the working state of the fan based on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and the fourth temperature sub-signal.

[0262] In an optional embodiment of the present application, the first temperature sub-signal corresponds to a first digital sub-signal; the second temperature sub-signal corresponds to a second digital sub-signal; the third temperature sub-signal corresponds to a third digital sub-signal; the fourth temperature sub-signal corresponds to a fourth digital sub-signal; and the method further includes:

[0263] converting the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain a first digital sub-signal corresponding to the first temperature sub-signal, a second digital sub-signal corresponding to the second temperature sub-signal, a third digital sub-signal corresponding to the third temperature sub-signal and / or a fourth digital sub-signal corresponding to the fourth temperature sub-signal;

[0264] The first temperature value is determined based on the first digital sub-signal and / or the second digital sub-signal and the second temperature value is determined based on the third digital sub-signal and / or the fourth digital sub-signal.

[0265] It should be noted that the specific conversion processing process of converting the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain the first digital sub-signal corresponding to the first temperature sub-signal, the second digital sub-signal corresponding to the second temperature sub-signal, the third digital sub-signal corresponding to the third temperature sub-signal and / or the fourth digital sub-signal corresponding to the fourth temperature sub-signal can be determined according to actual conditions and is not limited here. As an example, the conversion processing of the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain the first digital sub-signal corresponding to the first temperature sub-signal, the second digital sub-signal corresponding to the second temperature sub-signal, the third digital sub-signal corresponding to the third temperature sub-signal and / or the fourth digital sub-signal corresponding to the fourth temperature sub-signal can be performed by analog-to-digital conversion processing on the first temperature sub-signal, the second temperature sub-signal, the third temperature sub-signal and / or the fourth temperature sub-signal to obtain the first digital sub-signal corresponding to the first temperature sub-signal, the second digital sub-signal corresponding to the second temperature sub-signal, the third digital sub-signal corresponding to the third temperature sub-signal and / or the fourth digital sub-signal corresponding to the fourth temperature sub-signal.

[0266] The specific determination process in determining the first temperature value based on the first digital signal sub-signal and / or the second digital sub-signal can be determined according to actual conditions and is not limited here. As an example, determining the first temperature value based on the first digital signal sub-signal and / or the second digital sub-signal can be calculating the first temperature value based on the first digital signal sub-signal and / or the second digital sub-signal.

[0267] The specific determination process in determining the second temperature value based on the third digital sub-signal and / or the fourth digital sub-signal can be determined according to actual conditions and is not limited here. As an example, determining the second temperature value based on the third digital sub-signal and / or the fourth digital sub-signal can be calculating the second temperature value based on the third digital sub-signal and / or the fourth digital sub-signal.

[0268] The detailed process of the PCR control method of the present application can be understood in conjunction with the previous PCR control device, and will not be repeated here.

[0269] An embodiment of the present invention further provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of the above method embodiment are implemented.

[0270] An embodiment of the present application also provides a computer-readable medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned method embodiment are implemented. The aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0271] It should be noted here that the description of the above storage medium and product embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0272] It should be noted that Fig.17 This is a schematic diagram of the structure of the PCR control device of the present application embodiment, as shown in Fig.17 As shown, the control device 1700 includes: a processor 1701 and a memory 1703 . Optionally, the control device 1700 may also include a communication interface 1702 .

[0273] It can be understood that the memory 1703 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAM bus random access memory (DRRAM, Direct Rambus Random Access Memory).The memory 1703 described in the embodiments of the present application is intended to include but is not limited to these and any other suitable types of memory.

[0274] The method disclosed in the above embodiment of the present application can be applied to the processor 1701, or implemented by the processor 1701. The processor 1701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of the hardware in the processor 1701 or an instruction in the form of software. The above processor 1701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 1701 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the memory 1703, and the processor 1701 reads the information in the memory 1703 and completes the steps of the above method in combination with its hardware.

[0275] In an exemplary embodiment, the device may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0276] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0277] It should be noted that, in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0278] The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0279] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0280] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0281] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A PCR control device, characterized in that: The device comprises: at least one heating component, a reaction tube corresponding to the heating component and a control component; at least one first sensor is arranged on the heating component; at least one heat dissipation component is also arranged on the heating component; the heat dissipation component comprises at least one second sensor; an air duct is arranged around the heat dissipation component; the air duct is connected to a fan; the control component is respectively connected to the first sensor, the second sensor and the fan; The first sensor is used to collect a first temperature signal of the corresponding heating component; The second sensor is used to collect a second temperature signal of the corresponding heat dissipation component; The control component is used to control the working state of the fan based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube.

2. The device according to claim 1, characterized in that The control component includes an ADC, an MCU and a driving circuit; the ADC is connected to the first sensor, the second sensor and the MCU respectively; the driving circuit is connected to the MCU and the fan respectively; The ADC is used to convert the first temperature signal and / or the second temperature signal to obtain a first digital signal corresponding to the first temperature signal and / or a second digital signal corresponding to the second temperature signal; The MCU is configured to determine a first temperature value based on the first digital signal and a second temperature value based on the second digital signal; determining a PWM signal based on the first temperature value and / or the second temperature value; The driving circuit is used to determine a voltage parameter or a current parameter of the fan based on the PWM signal; the voltage parameter or the current parameter is used to control the working state of the fan.

3. The device according to claim 2, characterized in that The voltage parameters include a first voltage parameter and a second voltage parameter; the current parameters include a first current parameter and a second current parameter; The MCU is further configured to determine whether the first temperature value is greater than a preset target temperature; When the first temperature value is greater than the target temperature, determining the PWM signal with a first duty cycle; When the first temperature value is less than or equal to the target temperature, determining the PWM signal with a second duty cycle; The first duty cycle and the second duty cycle are different; The driving circuit is also used to determine the first voltage parameter or the first current parameter based on the PWM signal of the first duty cycle, and to determine the second voltage parameter or the second current parameter based on the PWM signal of the second duty cycle; the first voltage parameter or the first current parameter is used to control the working state of the fan to have a maximum air volume; the second voltage parameter or the second current parameter is used to control the working state of the fan to stop working.

4. The device according to claim 2, characterized in that The voltage parameters include a third voltage parameter, a fourth voltage parameter and a fifth voltage parameter; the current parameters include a third current parameter, a fourth current parameter and a fifth current parameter; The MCU is further used to determine whether the second temperature value is greater than a first threshold or less than a second threshold; the second threshold is greater than the first threshold; the first threshold and the second threshold are both related to the volume of the heat dissipation component; when the second temperature value is less than or equal to the first threshold, determine the PWM signal of the third duty cycle; When the second temperature value is greater than the first threshold or less than the second threshold, determining the PWM signal with a fourth duty cycle; When the second temperature value is greater than or equal to the second threshold, determining the PWM signal with a fifth duty cycle; The third duty cycle, the fourth duty cycle and the fifth duty cycle are different; The driving circuit is further configured to determine the third voltage parameter or the third current parameter based on the PWM signal of the third duty cycle; and determining the fourth voltage parameter or the fourth current parameter based on the PWM signal of the fourth duty cycle; And the fifth voltage parameter or the fifth current parameter is determined based on the PWM signal of the fifth duty cycle; the third voltage parameter or the third current parameter is used to control the working state of the fan to stop working; the fourth voltage parameter or the fourth current parameter is used to control the working state of the fan to have a minimum air volume; the fifth voltage parameter or the fifth current parameter is used to control the working state of the fan to have a maximum air volume.

5. The device according to any one of claims 2 to 4, characterized in that: The at least one heating assembly includes a first heating assembly and a second heating assembly; the at least one first sensor includes a first temperature sensor and a second temperature sensor; the first temperature sensor is connected to the first heating assembly; the second temperature sensor is connected to the second heating assembly; the first temperature signal includes a first temperature sub-signal and a second temperature sub-signal; The first temperature sensor is used to collect the first temperature sub-signal of the first heating component; The second temperature sensor is used to collect the second temperature sub-signal of the second heating component.

6. The device according to claim 5, characterized in that The at least one heat dissipation component includes a first heat dissipation component and a second heat dissipation component; the at least one second sensor includes a third temperature sensor and a fourth temperature sensor; the third temperature sensor is connected to the first heat dissipation component; the fourth temperature sensor is connected to the second heat dissipation component; the second temperature signal includes a third temperature sub-signal and a fourth temperature sub-signal; The third temperature sensor is used to collect the third temperature sub-signal of the first heat dissipation component; The fourth temperature sensor is used to collect the fourth temperature sub-signal of the second heat dissipation component.

7. A PCR control method, characterized in that: A control device for PCR according to any one of claims 1 to 6; the method comprising: Collecting a first temperature signal of the heating component and a second temperature signal of the heat dissipation component; The working state of the fan is controlled based on the first temperature signal and / or the second temperature signal to stabilize the temperature in the reaction tube.

8. The method according to claim 7, characterized in that The controlling the working state of the fan based on the first temperature signal and / or the second temperature signal includes: Converting the first temperature signal and / or the second temperature signal to obtain a first digital signal corresponding to the first temperature signal and / or a second digital signal corresponding to the second temperature signal; determining a first temperature value based on the first digital signal and a second temperature value based on the second digital signal; determining a PWM signal based on the first temperature value and / or the second temperature value; A voltage parameter or a current parameter of the fan is determined based on the PWM signal; the voltage parameter or the current parameter is used to control the working state of the fan.

9. The method according to claim 8, characterized in that The voltage parameter includes a first voltage parameter and a second voltage parameter; the current parameter includes a first current parameter and a second current parameter; and determining the PWM signal based on the first temperature value includes: Determining whether the first temperature value is greater than a preset target temperature; When the first temperature value is greater than the target temperature, determining the PWM signal with a first duty cycle; When the first temperature value is less than or equal to the target temperature, determining the PWM signal of a second duty cycle; the first duty cycle and the second duty cycle are different; Correspondingly, determining the voltage parameter or current parameter of the fan based on the PWM signal includes: The first voltage parameter or the first current parameter is determined based on the PWM signal of the first duty cycle, and the second voltage parameter or the second current parameter is determined based on the PWM signal of the second duty cycle; the first voltage parameter or the first current parameter is used to control the working state of the fan to have a maximum air volume; the second voltage parameter or the second current parameter is used to control the working state of the fan to stop working.

10. The method according to claim 8, characterized in that The voltage parameters include a third voltage parameter, a fourth voltage parameter and a fifth voltage parameter; the current parameters include a third current parameter, a fourth current parameter and a fifth current parameter; The determining of the PWM signal based on the second temperature value comprises: Determining whether the second temperature value is greater than a first threshold or less than a second threshold; The second threshold is greater than the first threshold; the first threshold and the second threshold are both related to the volume of the heat dissipation component; When the second temperature value is less than or equal to the first threshold, determining the PWM signal with a third duty cycle; When the second temperature value is greater than the first threshold or less than the second threshold, determining the PWM signal of a fourth duty cycle; when the second temperature value is greater than or equal to the second threshold, determining the PWM signal of a fifth duty cycle; the third duty cycle, the fourth duty cycle and the fifth duty cycle are different; Correspondingly, determining the voltage parameter or current parameter of the fan based on the PWM signal includes: The third voltage parameter or the third current parameter is determined based on the PWM signal of the third duty cycle; and the fourth voltage parameter or the fourth current parameter is determined based on the PWM signal of the fourth duty cycle; and the fifth voltage parameter or the fifth current parameter is determined based on the PWM signal of the fifth duty cycle; the third voltage parameter or the third current parameter is used to control the working state of the fan to stop working; the fourth voltage parameter or the fourth current parameter is used to control the working state of the fan to have a minimum air volume; the fifth voltage parameter or the fifth current parameter is used to control the working state of the fan to have a maximum air volume.

11. The method according to any one of claims 8 to 10, characterized in that: The first temperature signal includes a first temperature sub-signal and a second temperature sub-signal; the collecting of the first temperature signal of the corresponding heating component includes: The first temperature sub-signal of the first heating component and the second temperature sub-signal of the second heating component are collected.

12. The method according to claim 11, characterized in that The second temperature signal includes a third temperature sub-signal and a fourth temperature sub-signal; and the collecting of the second temperature signal of the corresponding heat dissipation component includes: The third temperature sub-signal of the first heat dissipation component and the fourth temperature sub-signal of the second heat dissipation component are collected.

13. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the control method according to any one of claims 7 to 12 is implemented.

14. A computer-readable storage medium, characterized in that: Executable instructions are stored, and when executed by a processor, the control method described in any one of claims 7 to 12 is implemented.

Images