Temperature controller and refrigeration cabinet

Abstract

The utility model discloses a temperature controller and a refrigeration cabinet in the technical field. The temperature controller comprises a first temperature sensor, a second temperature sensor, a single-chip microcomputer, a driving chip, a first nixie tube and a second nixie tube. Data transmission ports of the first temperature sensor and the second temperature sensor are connected with a data input pin of the single-chip microcomputer, a DIO pin and a CLK pin of the single-chip microcomputer are connected with a DIO pin and a CLK pin corresponding to the driving chip, and an output pin of the driving chip is connected with a power supply pin of the first nixie tube and a power supply pin of the second nixie tube. VDD pins of the single-chip microcomputer and the driving chip are respectively connected with a working power supply, a VSS pin of the single-chip microcomputer is grounded, and a GND pin of the driving chip is grounded. According to the utility model, the technical problems that the control circuit becomes more complex due to the increase of the number of single-chip microcomputers, devices of fault units need to be checked one by one, time and labor are wasted, and the maintenance efficiency is reduced can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature controllers and relates to a temperature controller and a refrigeration cabinet. Background Art

[0002] Temperature controllers play a critical role in a variety of industrial and domestic applications, maintaining the required temperature range and ensuring the quality and safety of the product.

[0003] Usually, the thermostat is designed to control the temperature of the box. A single thermostat can adjust the temperature within a certain temperature range, but usually a single-temperature thermostat can only control one compressor alone, which makes it impossible to expand the finished product or reduce the cost. It can only adjust the temperature within a temperature range and cannot adapt to different usage environments. The conventional dual-temperature thermostat outputs the positive control signal of the digital tube through two single-chip microcomputers, and the driver chip outputs the negative signal, and jointly controls and displays the temperature information of different temperature areas. If a component on one group of temperature control units fails, there will be a display area of ​​the thermostat that does not work. During maintenance, it is necessary to troubleshoot the corresponding circuit. Due to the joint control, the troubleshooting process becomes more complicated. The components of the faulty unit need to be checked one by one, which is time-consuming and laborious, and reduces the maintenance efficiency. Therefore, a temperature controller is urgently needed to solve the above technical problems. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and to provide a temperature controller and a refrigeration cabinet, which solves the technical problem that the control circuit becomes more complicated due to the increase in the number of single-chip microcomputers, the components of the faulty units need to be checked one by one, which is time-consuming and labor-intensive, and reduces the maintenance efficiency.

[0005] In order to solve the above technical problems, the utility model provides a temperature controller and a refrigeration cabinet, comprising:

[0006] In a first aspect, the utility model provides a temperature controller, comprising

[0007] A first temperature sensor, a second temperature sensor, a single chip microcomputer, a driving chip, a first digital tube and a second digital tube;

[0008] The data transmission ports of the first temperature sensor and the second temperature sensor are connected to the data input pin of the single chip microcomputer, the DIO pin and CLK pin of the single chip microcomputer are connected to the DIO pin and CLK pin corresponding to the driver chip, the output pin of the driver chip is connected to the power supply pin of the first digital tube and the second digital tube, the VDD pins of the single chip microcomputer and the driver chip are respectively connected to the working power supply, the VSS pin of the single chip microcomputer is grounded, and the GND pin of the driver chip is grounded. .

[0009] Furthermore, the output pin of the driving chip is connected to the power supply pins of the first digital tube and the second digital tube, including:

[0010] The first segment output SEG1 of the driver chip is connected to the A pin of the first digital tube and the second digital tube respectively, the second segment output SEG2 of the driver chip is connected to the B pin of the first digital tube and the second digital tube respectively, the third segment output SEG3 of the driver chip is connected to the C pin of the first digital tube and the second digital tube respectively, the fourth segment output SEG4 of the driver chip is connected to the D pin of the first digital tube and the second digital tube respectively, the fifth segment output SEG5 of the driver chip is connected to the E pin of the first digital tube and the second digital tube respectively, the sixth segment output SEG6 of the driver chip is connected to the F pin of the first digital tube and the second digital tube respectively, the seventh segment output SEG7 of the driver chip is connected to the C pin of the first digital tube and the second digital tube respectively. The eighth segment output SEG8 of the driving chip is respectively connected to the DP pins of the first digital tube and the second digital tube, the first bit output GRID1 of the driving chip is connected to the DIG1 pin of the first digital tube, the second bit output GRID2 of the driving chip is connected to the DIG2 pin of the first digital tube, the third bit output GRID3 of the driving chip is connected to the DIG3 pin of the first digital tube, the fourth bit output GRID4 of the driving chip is connected to the DIG1 pin of the second digital tube, the fourth bit output GRID5 of the driving chip is connected to the DIG2 pin of the second digital tube, and the fourth bit output GRID6 of the driving chip is connected to the DIG3 pin of the second digital tube.

[0011] Furthermore, it also includes a first refrigeration compressor and a second refrigeration compressor, the first refrigeration compressor and the second refrigeration compressor act on the temperature area corresponding to the monitoring of the first temperature sensor and the second temperature sensor, and the REG pin of the single chip microcomputer controls the corresponding relays OUT1 and OUT2 outputs respectively, and the OUT1 and OUT2 are the relay outputs of the first refrigeration compressor and the second refrigeration compressor.

[0012] Furthermore, the single chip microcomputer is configured to automatically adjust the operating state of the refrigeration compressor in the corresponding temperature zone according to a preset temperature range.

[0013] Furthermore, it also includes a wiring terminal for simplifying device wiring.

[0014] Furthermore, the model of the single chip microcomputer is MM32F0010A1T.

[0015] Furthermore, the model of the driver chip is TM1637.

[0016] In a second aspect, the utility model provides a refrigeration cabinet, comprising any of the temperature controllers described above.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The traditional control method of jointly controlling and displaying the temperature information of different temperature zones by using two single-chip microcomputers to output the positive control signal of the digital tubes respectively and the driver chip to output the negative signal is changed to one single-chip microcomputer controlling the driver chip, and the driver chip controls the digital tubes corresponding to different temperature zones to display the temperature information of different temperature zones. Since fewer electronic components are actually used, it is more convenient to troubleshoot faults. Only the corresponding software program needs to be debugged. The corresponding circuit connection is also simpler and easier to repair, which can improve the maintenance efficiency.

[0019] A single chip microcomputer is connected to a first refrigeration compressor (usually a freezing compressor) and a second refrigeration compressor (usually a refrigeration compressor) respectively to control the temperature of the corresponding freezing chamber and refrigeration chamber, thereby improving the accuracy and efficiency of temperature control;

[0020] Automatically adjusting the operating status of the refrigeration compressor according to the preset temperature range can effectively reduce energy consumption and achieve energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural framework diagram of a temperature controller provided in an embodiment of the present application.

[0022] Figure 2 It is a schematic diagram of the circuit structure of a temperature controller provided in an embodiment of the present application.

[0023] Figure 3 It is a schematic diagram of the wiring terminal structure of a temperature controller provided in an embodiment of the present application.

[0024] Figure 4 It is a schematic diagram of the wiring terminal plugging perspective of a temperature controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Embodiment 1:

[0028] like Figure 1 As shown, the utility model provides a temperature controller, comprising:

[0029] A first temperature sensor and a second temperature sensor, the first temperature sensor and the second temperature sensor can use thermistors, and the first temperature sensor and the second temperature sensor are used to monitor different temperature areas, and common temperature areas are divided into cold storage areas and freezing areas; a first refrigeration compressor and a second refrigeration compressor, the first refrigeration compressor and the second refrigeration compressor act on the temperature areas corresponding to the first temperature sensor and the second temperature sensor, such as the cold storage area and the freezing area; a single-chip microcomputer, the model of the single-chip microcomputer is MM32F0010A1T, the single-chip microcomputer is configured to receive signals from the first temperature sensor and the second temperature sensor, and automatically adjust the operating states of the first refrigeration compressor and the second refrigeration compressor in the corresponding temperature area according to a preset temperature range; a display module, the display module includes a first digital tube and a second digital tube for displaying temperature information, and the display module is used to display the current temperature of different temperature areas; it also includes a driver chip controlled by the single-chip microcomputer, the model of the driver chip is TM1637, and the driver chip is used to transmit the signals obtained by the first temperature sensor and the second temperature sensor to the first digital tube and the second digital tube, and the first digital tube and the second digital tube then display the relevant temperature information; it also includes a wiring terminal for simplifying device wiring.

[0030] See the specific circuit diagram Figure 2 As shown:

[0031] The data transmission ports of the first temperature sensor and the second temperature sensor are respectively connected to the data input pins of the single-chip microcomputer, the PA4 pin and the PA5 pin of the single-chip microcomputer are connected to the DIO pin and the CLK pin corresponding to the driving chip, the first segment output SEG1 of the driving chip is respectively connected to the A pins of the first digital tube and the second digital tube, the second segment output SEG2 of the driving chip is respectively connected to the B pins of the first digital tube and the second digital tube, the third segment output SEG3 of the driving chip is respectively connected to the C pins of the first digital tube and the second digital tube, the fourth segment output SEG4 of the driving chip is respectively connected to the The D pins of the first digital tube and the second digital tube are connected, the fifth segment output SEG5 of the driver chip is respectively connected to the E pins of the first digital tube and the second digital tube, the sixth segment output SEG6 of the driver chip is respectively connected to the F pins of the first digital tube and the second digital tube, the seventh segment output SEG7 of the driver chip is respectively connected to the G pins of the first digital tube and the second digital tube, the eighth segment output SEG8 of the driver chip is respectively connected to the DP pins of the first digital tube and the second digital tube, the first bit output GRID1 of the driver chip is connected to the DIG1 pin of the first digital tube, and the driver chip is connected to the DIG2 pin of the first digital tube. The second output GRID2 of the driving chip is connected to the DIG2 pin of the first digital tube, the third output GRID3 of the driving chip is connected to the DIG3 pin of the first digital tube, the fourth output GRID4 of the driving chip is connected to the DIG1 pin of the second digital tube, the fourth output GRID5 of the driving chip is connected to the DIG2 pin of the second digital tube, the fourth output GRID6 of the driving chip is connected to the DIG3 pin of the second digital tube, the VDD pins of the single-chip microcomputer and the driving chip are respectively connected to the working power supply, the VSS pin of the single-chip microcomputer is grounded, and the GND pin of the driving chip is connected to the ground. Grounded; in the attached figure, U2 is a driving chip, U3 is a single-chip microcomputer, and the temperature sensor is connected to the PA15 pin and PA2 pin of the single-chip microcomputer by signal. After the single-chip microcomputer receives the signals of the two temperature zones, the driving chip TM1637 controls the pins of the two digital tubes at the same time to realize dual-screen control. On the other hand, the corresponding relays OUT2, FAN, and OUT1 outputs are respectively controlled through the REG2 pin, REG3 pin, and REG1 pin, wherein OUT2 and OUT1 correspond to the relay outputs of the two refrigeration compressors, and FAN corresponds to the fan interface, wherein the first refrigeration compressor and the second refrigeration compressor can share a fan.

[0032] Specifically, how the driver chip TM1637 controls the pins of two digital tubes at the same time to realize dual-screen control after receiving the signal:

[0033] The pins GRID1, GRID2, and GRID3 control the pins DIG1, ​​DIG2, and DIG3 of the first digital tube, and the pins GRID4, GRID5, and GRID6 control the pins DIG1, ​​DIG2, and DIG3 of the second digital tube.

[0034] When DIG1 receives the signal, it controls one of the 7-tube LED lights in the first digital tube to display the value.

[0035] Similarly, GRID1, GRID2, and GRID3 respectively drive DIG1, ​​DIG2, and DIG3 to control the three 7-tube LED lights of the first digital tube.

[0036] Similarly, GRID4, GRID5, and GRID6 respectively drive DIG1, ​​DIG2, and DIG3 to control the three 7-tube LED lights of the second digital tube.

[0037] For example, if you need to display the number 1 on the last digit of the first digital tube, the DIG3 pin of the first digital tube (corresponding to the GRID3 pin on the driver chip) must output a low level, and the B and C pins of the first digital tube (corresponding to the SEG2 and SEG3 pins of the driver chip) must output a high level. Although the two digital tubes are connected to the SEG2 and SEG3 pins, the driver chip TM1637 controls the pins of the two digital tubes at the same time after receiving the signal, ultimately achieving dual-screen control.

[0038] Compared with the conventional dual-temperature thermostat, which requires two single-chip microcomputers to receive sensor signals and two digital tube driving devices to display the digital tube parameters, the corresponding circuit control is that the single-chip microcomputer receives the thermistor electrical signal, outputs the positive control signal of the digital tube through the single-chip microcomputer, and the digital tube driving chip outputs the negative signal, and jointly controls the display. In this embodiment, one single-chip microcomputer receives two sensor signals, and the original dual single-chip microcomputers output high and low levels to drive the dual digital tubes are changed to a single-chip microcomputer and a driving chip working together. The single-chip microcomputer controls the driving chip and the relay, and the driving chip controls the digital tube, so that one driving chip can control two digital tubes separately, saving materials and facilitating troubleshooting.

[0039] like Figure 3 and Figure 4As shown: the terminal block can choose 6p connection terminal, that is, six-hole female terminal block, connecting male terminal and three-hole locking piece, the models are HXT 62001-6R, HXT 62001-RT and HXT 62001-03S respectively, wherein the VDD pin of the microcontroller and the driver chip in the thermostat is connected to the live wire port of the terminal block through the brown wire, the ground terminal in the thermostat is connected to the neutral wire terminal of the terminal block through the blue wire, the REG1 pin of the microcontroller in the thermostat is connected to the refrigeration compressor port of the terminal block through the red wire, the REG2 pin of the microcontroller in the thermostat is connected to the fan port of the terminal block through the yellow wire, and the REG3 pin of the microcontroller in the thermostat is connected to the refrigeration compressor port of the terminal block through the orange wire, so as to realize integrated multi-control. Optionally, a two-hole female terminal block and connecting male terminal can be added, the models are HXT 25020-02R and HXT 25020-RT, in which the PA15 pin of the microcontroller in the thermostat is connected to the first temperature sensor port of the two-hole female terminal through a white wire, and the PA2 pin of the microcontroller in the thermostat is connected to the second temperature sensor port of the two-hole female terminal through a black wire, which is used to connect with the first temperature sensor and the second temperature sensor. This design solves the problem of complex line connection of traditional thermostats and difficulty in installation coordination. Embodiment 2:

[0040] The utility model provides a refrigeration cabinet, comprising the temperature controller described in the first embodiment, and having any beneficial effects of the temperature controller.

[0041] Working principle: The traditional control method of jointly controlling and displaying the temperature information of different temperature zones is changed by having two single-chip microcomputers output the positive control signal of the digital tubes respectively and the driver chip output the negative signal, and the temperature information of different temperature zones is displayed in a joint control mode, where the single-chip microcomputer controls the driver chip, and the driver chip controls the digital tubes corresponding to different temperature zones to display the temperature information of different temperature zones. Since fewer electronic components are actually used, it is more convenient to troubleshoot faults. Only the corresponding software program needs to be debugged, and the corresponding circuit connection is also simpler and easier to maintain, which can improve the maintenance efficiency. By using two temperature sensors controlled by one single-chip microcomputer, the temperature can be monitored and controlled more accurately, which improves the accuracy and efficiency of temperature control. The operating status of the refrigeration compressor is automatically adjusted according to the preset temperature range, which can effectively reduce energy consumption and achieve energy conservation and emission reduction.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A temperature controller, characterized in that: include: A first temperature sensor, a second temperature sensor, a single chip microcomputer, a driving chip, a first digital tube and a second digital tube; The data transmission ports of the first temperature sensor and the second temperature sensor are connected to the data input pin of the single-chip microcomputer, the DIO pin and the CLK pin of the single-chip microcomputer are connected to the DIO pin and the CLK pin corresponding to the driving chip, the output pin of the driving chip is connected to the power supply pin of the first digital tube and the second digital tube, the VDD pins of the single-chip microcomputer and the driving chip are respectively connected to the working power supply, the VSS pin of the single-chip microcomputer is grounded, and the GND pin of the driving chip is grounded.

2. The temperature controller according to claim 1, characterized in that: The output pin of the driving chip is connected with the power supply pins of the first digital tube and the second digital tube, including: The first segment output SEG1 of the driver chip is connected to the A pin of the first digital tube and the second digital tube respectively, the second segment output SEG2 of the driver chip is connected to the B pin of the first digital tube and the second digital tube respectively, the third segment output SEG3 of the driver chip is connected to the C pin of the first digital tube and the second digital tube respectively, the fourth segment output SEG4 of the driver chip is connected to the D pin of the first digital tube and the second digital tube respectively, the fifth segment output SEG5 of the driver chip is connected to the E pin of the first digital tube and the second digital tube respectively, the sixth segment output SEG6 of the driver chip is connected to the F pin of the first digital tube and the second digital tube respectively, the seventh segment output SEG7 of the driver chip is connected to the C pin of the first digital tube and the second digital tube respectively. The eighth segment output SEG8 of the driving chip is respectively connected to the DP pins of the first digital tube and the second digital tube, the first bit output GRID1 of the driving chip is connected to the DIG1 pin of the first digital tube, the second bit output GRID2 of the driving chip is connected to the DIG2 pin of the first digital tube, the third bit output GRID3 of the driving chip is connected to the DIG3 pin of the first digital tube, the fourth bit output GRID4 of the driving chip is connected to the DIG1 pin of the second digital tube, the fourth bit output GRID5 of the driving chip is connected to the DIG2 pin of the second digital tube, and the fourth bit output GRID6 of the driving chip is connected to the DIG3 pin of the second digital tube.

3. The temperature controller according to claim 1, characterized in that: It also includes a first refrigeration compressor and a second refrigeration compressor, which act on the temperature areas corresponding to the monitoring of the first temperature sensor and the second temperature sensor. The REG pin of the microcontroller controls the corresponding relays OUT1 and OUT2 outputs respectively, and OUT1 and OUT2 are the relay outputs of the first refrigeration compressor and the second refrigeration compressor.

4. The temperature controller according to claim 3, characterized in that: The single chip microcomputer is configured to automatically adjust the operating state of the refrigeration compressor in the corresponding temperature zone according to a preset temperature range.

5. The temperature controller according to claim 1, characterized in that: Also included are terminal blocks to simplify wiring of the device.

6. The temperature controller according to claim 1, characterized in that: The model of the single chip microcomputer is MM32F0010A1T.

7. The temperature controller according to claim 1, characterized in that: The model of the driver chip is TM1637.

8. A refrigeration cabinet, characterized in that: A temperature controller comprising any one of claims 1 to 7.

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