Temperature controller system and central air conditioner

Abstract

This utility model proposes a temperature controller system and a central air conditioning system. The temperature controller system includes a fan speed signal output module, a fan speed control board, and a signal detection module. The output terminal of the fan speed signal output module is connected to the input terminal of the fan speed control board via a conductor. The detection terminal of the signal detection module is connected to one end of the conductor, and the output terminal of the signal detection module is connected to the input terminal of the fan speed signal output module. By setting the signal detection module to detect the voltage output by the conductor connecting the fan speed signal output module and the fan speed control board, and comparing the detected voltage with a standard voltage, the attenuation of the conductor can be determined. Based on the attenuation, a voltage compensation signal is generated, so that the fan speed control signal obtained after voltage compensation can offset the transmission attenuation of the conductor, ensuring that an accurate fan speed control signal can be sent to the fan speed control board, achieving accurate speed regulation.

Description

Technical Field

[0001] This utility model relates to the field of equipment control, and in particular to a thermostat system and a central air conditioning system. Background Technology

[0002] In a central air conditioning system, a thermostat is used to control the operation of the fan speed control board to adjust the fan speed. However, the thermostat and the fan speed control board are often connected by a long wire. Due to the length of the wire, the impedance of the wire and other interference in the installation environment can attenuate the speed control signal output by the thermostat, thus affecting the speed control accuracy of the fan speed control board. Utility Model Content

[0003] The main purpose of this invention is to propose a temperature controller system and a central air conditioner, which aims to solve the problem of inaccurate speed regulation caused by the impedance of the transmission path in the prior art.

[0004] To achieve the above objectives, this utility model provides a temperature controller system, which includes a fan speed signal output module, a fan speed control board, and a signal detection module; the output terminal of the fan speed signal output module is connected to the input terminal of the fan speed control board via a conductor, the detection terminal of the signal detection module is connected to one end of the conductor, and the output terminal of the signal detection module is connected to the input terminal of the fan speed signal output module; wherein:

[0005] The signal detection module is used to detect the test signal output by the conductor to obtain the detection voltage, and send the detection voltage to the wind speed signal output module;

[0006] The wind speed signal output module is used to compare the detected voltage with the standard voltage corresponding to the test signal to obtain a voltage compensation signal, generate a wind speed control signal based on the voltage compensation signal, and send the wind speed control signal to the wind turbine speed control board.

[0007] Optionally, the temperature controller system includes a temperature controller and a fan speed control board; the fan speed signal output module and the signal detection module are disposed within the temperature controller; the detection terminal of the signal detection module is connected to the output terminal of the signal detection module; wherein:

[0008] The fan speed control board is used to send a preset test signal to the wind speed signal output module so that the signal detection module can detect the detection voltage, wherein the voltage value of the preset test signal output by the fan speed control board is the standard voltage.

[0009] Optionally, the fan speed control board includes a speed control module, a start-up detection module, and a timing module; wherein:

[0010] The input terminal of the speed control module serves as the input terminal of the fan speed control board; the control terminal of the speed control module is connected to the output terminal of the power-on detection module; and the input terminal of the power-on detection module is connected to the timing module. Wherein:

[0011] The power-on detection module is used to send a calibration signal to the speed control module when the system is powered on, so that the speed control module sends the preset test signal and a timing signal to the timing module, so that the timing module starts timing.

[0012] The speed control module is used to stop sending the preset test signal after the timing module has reached a preset time.

[0013] Optionally, the speed control module includes a speed control unit and a storage unit, wherein the data terminal of the speed control unit is connected to the storage unit; the storage unit stores preset test signals corresponding to different frequencies; wherein:

[0014] The speed control unit is used to, after receiving the calibration signal, retrieve a preset test signal from the storage unit at each preset transmission time and transmit it; wherein there are multiple preset transmission times, and the timing time corresponding to each preset transmission time is less than the preset time.

[0015] Optionally, the fan speed control board includes a control unit and a filtering unit; the output terminal of the control unit is connected to the input terminal of the filtering unit, and the output terminal of the filtering unit is connected to the input terminal of the fan speed control board; wherein:

[0016] The control unit is used to send a square wave signal corresponding to the standard voltage to the filtering unit;

[0017] The filtering unit is used to generate a sine wave signal corresponding to the square wave signal, and send the sine wave signal as the preset test signal to the wind speed signal output module.

[0018] Optionally, the temperature controller system includes a temperature controller and a fan speed control board; the fan speed signal output module is disposed within the temperature controller; the signal detection module is disposed on the fan speed control board, and the detection terminal of the signal detection module is connected to the input terminal of the fan speed control board; wherein:

[0019] The wind speed signal output module is used to send a preset test signal to the wind turbine speed control board so that the signal detection module can detect the detection voltage, wherein the voltage value of the preset test signal output by the wind speed signal output module is the standard voltage.

[0020] Optionally, the wind speed signal output module includes a main control unit and a signal output unit; the input terminal of the main control unit serves as the input terminal of the wind speed signal output module, the output terminal of the main control unit is connected to the input terminal of the signal output unit, and the output terminal of the signal output unit serves as the output terminal of the wind speed signal output module; wherein:

[0021] The main control unit is used to compare the detected voltage with the standard voltage corresponding to the test signal to obtain a voltage compensation signal, generate an output control signal based on the voltage compensation signal, and send the output control signal to the signal output unit.

[0022] The signal output unit is used to send the wind speed control signal corresponding to the output control signal to the fan speed control board.

[0023] Optionally, the signal output unit includes a filtering subunit and an amplification subunit; the input terminal of the filtering subunit serves as the input terminal of the signal output unit, the output terminal of the filtering subunit is connected to the input terminal of the amplification subunit, and the output terminal of the amplification subunit serves as the output terminal of the signal output unit.

[0024] Optionally, the signal detection module is a voltage detection circuit.

[0025] To achieve the above objectives, this utility model also provides a central air conditioning system, which includes the thermostat system described above.

[0026] This utility model proposes a temperature controller system and a central air conditioner. The temperature controller system includes a wind speed signal output module, a fan speed control board, and a signal detection module. The output terminal of the wind speed signal output module is connected to the input terminal of the fan speed control board via a conductor. The detection terminal of the signal detection module is connected to one end of the conductor, and the output terminal of the signal detection module is connected to the input terminal of the wind speed signal output module. The signal detection module detects the test signal output by the conductor to obtain a detection voltage and sends the detection voltage to the wind speed signal output module. The wind speed signal output module compares the detection voltage with a standard voltage corresponding to the test signal to obtain a voltage compensation signal, generates a wind speed control signal based on the voltage compensation signal, and sends the wind speed control signal to the fan speed control board. By setting up a signal detection module to detect the voltage output of the conductor connecting the wind speed signal output module and the fan speed control board, and comparing the detected voltage with the standard voltage, the attenuation of the conductor to the signal can be determined. Based on the attenuation, a voltage compensation signal is generated so that the wind speed control signal obtained after voltage compensation can offset the transmission attenuation of the conductor, ensuring that an accurate wind speed control signal can be sent to the fan speed control board to achieve accurate speed regulation. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0030] Figure 1 This is a modular structure diagram of the temperature controller system of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of an embodiment of the temperature controller system of this utility model;

[0032] Figure 3 This is a schematic diagram of another embodiment of the temperature controller system of this utility model;

[0033] Figure 4 This is a schematic diagram of the overall structure of the temperature controller system of this utility model;

[0034] Figure 5 This is a schematic diagram of the overall control process of the temperature controller system of this utility model.

[0035] Explanation of icon numbers:

[0036] label name label name 10 Thermostat 200 Fan speed control board 100 Wind speed signal output module 300 Signal detection module 110 Main control unit 400 conductor 120 Signal output unit Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0039] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention. To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0040] This utility model provides a temperature controller system, referring to... Figure 1 , Figure 1This is a modular structure diagram of the temperature controller system of this utility model. The temperature controller system includes a wind speed signal output module 100, a fan speed control board 200, and a signal detection module 300. The output terminal of the wind speed signal output module 100 is connected to the input terminal of the fan speed control board 200 via a conductor 400. The detection terminal of the signal detection module 300 is connected to one end of the conductor 400, and the output terminal of the signal detection module 300 is connected to the input terminal of the wind speed signal output module 100.

[0041] The signal detection module 300 is used to detect the test signal output by the conductor 400 to obtain the detection voltage, and send the detection voltage to the wind speed signal output module 100;

[0042] The wind speed signal output module 100 is used to compare the detected voltage with the standard voltage corresponding to the test signal to obtain a voltage compensation signal, generate a wind speed control signal based on the voltage compensation signal, and send the wind speed control signal to the fan speed control board 200.

[0043] The wind speed signal output module 100 sends a wind speed control signal to the fan speed control board 200 based on the temperature control requirements, so that the fan speed control board 200 adjusts the fan speed based on the wind speed control signal, thereby realizing the control of the fan wind speed.

[0044] The specific type of conductor 400 between the wind speed signal output module 100 and the fan speed control board 200 can be set according to actual needs. In this embodiment and subsequent embodiments, conductor 400 is used as a wire for illustration.

[0045] The wind speed control signal is output from the output terminal of the wind speed signal output module 100 to the wire, and then reaches the input terminal of the fan speed control board 200 through the wire. The wire has resistance, and the installation environment may cause interference factors such as parasitic capacitance, which will cause the wind speed control signal to be lost during transmission on the wire. As a result, there is a difference between the wind speed control signal output by the wind speed signal output module 100 and the wind speed control signal received by the fan speed control board 200, which makes it impossible for the fan speed control board 200 to accurately adjust the fan speed.

[0046] The signal detection module 300 detects the test signal output from the wire to obtain the detection voltage. It can be understood that the detection voltage is obtained by detecting the test signal after it has been transmitted through the wire. Therefore, the test signal is affected by the resistance of the wire and other factors, that is, the voltage of the test signal has been attenuated by the wire. Therefore, by detecting the voltage, the attenuation of the signal transmitted on the wire can be known.

[0047] The specific parameters of the test signal can be set based on actual needs.

[0048] The test signal is set with a standard voltage; the standard voltage is the voltage of the test signal when it is not attenuated, such as the voltage of the test signal before it is output to the wire.

[0049] The standard voltage is not attenuated by the wire, while the test voltage is attenuated by the wire. Therefore, by comparing the standard voltage and the test voltage, the degree of attenuation of the test signal by the wire can be determined.

[0050] Given that the attenuation of the test signal by the conductor is known, the corresponding voltage compensation signal can be determined. The voltage compensation signal is used to compensate the original control signal output by the wind speed signal output module 100 to obtain the compensated wind speed control signal. The specific confirmation method of the voltage compensation signal can be set according to actual needs. It is understood that after the original control signal is compensated by the voltage compensation signal to obtain the wind speed control signal, and the wind speed control signal is transmitted to the wind turbine speed control board 200 through the conductor, the voltage of the wind speed control signal received by the wind turbine speed control board 200 should be the same as the voltage of the original control signal when it is not attenuated. That is, the attenuation of the wind speed control signal when it is transmitted through the conductor is canceled by the voltage compensation signal, so that the voltage received by the wind turbine speed control board 200 is the same as the voltage that actually needs to be sent to the wind turbine speed control board 200.

[0051] It should be noted that the test signal can be sent from the wind speed signal output module 100 to the wind turbine speed control board 200 via a wire, and the signal detection module 300 receives the test signal on the side of the wind turbine speed control board 200; the test signal can also be sent from the wind turbine speed control board 200 to the wind speed signal output module 100 via a wire, and the signal detection module 300 receives the test signal on the side of the wind speed signal output module 100.

[0052] The specific type of the signal detection module 300 can be set according to actual needs, such as the signal detection module 300 being a voltage detection circuit.

[0053] In this embodiment, a signal detection module 300 is set up to detect the voltage output by the conductor 400 connecting the wind speed signal output module 100 and the fan speed control board 200. The detected voltage is compared with a standard voltage to determine the signal attenuation of the conductor 400. Based on the attenuation, a voltage compensation signal is generated so that the wind speed control signal obtained after voltage compensation can offset the transmission attenuation of the conductor 400, ensuring that an accurate wind speed control signal can be sent to the fan speed control board 200 to achieve accurate speed regulation.

[0054] Further, see Figure 2The temperature controller system includes a temperature controller 10 and a fan speed control board 200; the fan speed signal output module 100 and the signal detection module 300 are disposed within the temperature controller 10; the detection terminal of the signal detection module 300 is connected to the output terminal of the signal detection module 300; wherein:

[0055] The fan speed control board 200 is used to send a preset test signal to the wind speed signal output module 100 so that the signal detection module 300 can detect the detection voltage, wherein the voltage value of the preset test signal output by the fan speed control board 200 is the standard voltage.

[0056] In this embodiment, the signal detection module 300 is set on one side of the temperature controller 10; at this time, the preset test signal is sent from the fan speed control board 200 to the wire and transmitted to the wind speed signal output module 100 and the signal detection module 300.

[0057] Understandably, the signal detection module 300 needs to send the detected voltage to the wind speed signal output module 100. Therefore, the signal detection module 300 is placed inside the temperature controller 10, that is, in the same device as the wind speed signal output module 100, so that communication between the signal detection module 300 and the wind speed signal output module 100 can be realized directly inside the temperature controller 10. For example, the connection between the signal detection module 300 and the wind speed signal output module 100 can be realized directly through the internal circuit of the circuit board. Thus, communication between the signal detection module 300 and the wind speed signal output module 100 can be realized without adding additional wiring.

[0058] It is understandable that the signal attenuation from the wind speed signal output module 100 to the wind turbine speed control board 200 is the same as the signal attenuation from the wind turbine speed control board 200 to the wind speed signal output module 100. Therefore, setting the signal detection module 300 on the side of the wind speed signal output module 100 can also accurately detect the attenuation and thus determine the accurate voltage compensation signal.

[0059] Furthermore, the fan speed control board 200 includes a speed control module, a start-up detection module, and a timing module; wherein:

[0060] The input terminal of the speed control module serves as the input terminal of the fan speed control board 200; the control terminal of the speed control module is connected to the output terminal of the start-up detection module; and the input terminal of the start-up detection module is connected to the timing module.

[0061] The power-on detection module is used to send a calibration signal to the speed control module when the system is powered on, so that the speed control module sends the preset test signal and a timing signal to the timing module, so that the timing module starts timing.

[0062] The speed control module is used to stop sending the preset test signal after the timing module has reached a preset time.

[0063] It is understood that in this embodiment, the preset test signal is sent from the fan speed control board 200 to the fan speed signal output module 100 via a wire. However, when the temperature controller system is running normally, the fan speed control signal needs to be sent from the fan speed signal output module 100 to the fan speed control board 200 via a wire. That is, both the preset test signal and the fan speed control signal are transmitted through the wire. Therefore, if the fan speed control board 200 outputs the preset test signal from the opposite direction at the same time as the fan speed signal output module 100 outputs the fan speed control signal to the wire, the two signals will interfere with each other, making it impossible to accurately detect the preset test signal. In order to avoid the conflict between the fan speed control signal and the preset test signal, in this embodiment, the preset test signal is sent within a certain period of time after the system is powered on, so as to determine the voltage compensation signal.

[0064] Specifically, a power-on detection module and a timing module are set up; when the temperature controller system is powered on, the power-on detection module detects that the system is powered on, sends a calibration signal to the speed control module, and sends a timing signal to the timing module.

[0065] The calibration signal is used to indicate the transmission of a preset test signal.

[0066] The timing signal is used to indicate to the timing module to start timing.

[0067] After receiving the calibration signal, the speed control module sends a preset test signal to the conductor, so that the signal detection module 300 can detect the preset test signal to determine the voltage compensation signal.

[0068] After the timing module reaches the preset time, the voltage compensation signal is considered to be completed. At this time, the speed control module stops sending the preset test signal and receives the wind speed control signal sent from the wind speed signal output module 100.

[0069] The power-on detection module can also determine the system's downtime when the system is powered on. Only when the downtime reaches the preset downtime will a calibration signal be sent to the speed control module to perform the subsequent voltage compensation signal determination operation. If the downtime does not reach the preset downtime, no calibration signal will be sent to the speed control module and no voltage compensation signal determination will be performed. This is to avoid frequent determination of the voltage compensation signal, which would affect the normal operation of the temperature controller 10.

[0070] It is understandable that within the period of the preset test signal sent by the speed control module, the wind speed signal output module 100 stops sending wind speed control signals; specifically, a main control unit 110, a power-on detection unit, and a timing unit can be set within the wind speed signal output module 100; the power-on detection terminal of the main control unit 110 is connected to the power-on detection unit, the output terminal of the power-on detection unit is connected to the main control unit 110 and the timing unit respectively, and the output terminal of the timing unit is connected to the main control unit 110; wherein:

[0071] The power-on detection unit is used to send a power-on signal to the main control unit 110 when the system is powered on, so that the main control unit 110 stops sending the wind speed control signal and sends a timing signal to the timing unit, so that the timing unit starts timing.

[0072] The main control module is used to send the wind speed control signal after the timing unit reaches the preset stop time.

[0073] Understandably, to ensure independent transmission of the preset test signal and the wind speed control signal, the preset time set by the speed control module and the stop preset time set by the main control module can be set to the same value. This ensures that when the speed control module outputs the preset test signal, the main control module will necessarily stop outputting the wind speed control signal, and after the speed control module stops outputting the preset test signal, the main control module will begin outputting the wind speed control signal. To further guarantee independent transmission of the preset test signal and the wind speed control signal, the preset time set by the speed control module can be set to be shorter than the stop preset time set by the main control module. This ensures that the main control module begins outputting the wind speed control signal only after a certain period of time has elapsed since the speed control module stopped outputting the preset test signal.

[0074] The specific value of the preset time can be set based on actual needs. However, in order to avoid affecting the normal operation of the fan, the preset time should not be set too large. For example, the preset time can be set to 500ms.

[0075] Correspondingly, the main control module can also determine the system's downtime after receiving the power-on signal. When the downtime reaches the preset downtime, it will stop sending the wind speed control signal to perform the subsequent voltage compensation signal determination operation. When the downtime does not reach the preset downtime, it will directly send the wind speed control signal to perform normal fan control. This is to avoid frequently determining the voltage compensation signal and affecting the normal use of the temperature controller 10.

[0076] The signal detection module 300 can also be configured with a power-on detection device and a timer. When the system powers on, the power-on detection device sends a timing signal to the timer to start timing. If the signal detection module 300 has not detected the preset test signal after the preset detection time has elapsed, it sends a fault signal to the management terminal to remind the user that a wire connection error may have occurred. The management terminal can be configured according to actual needs; for example, the management terminal can be a terminal that establishes a communication connection with the signal detection module 300 or the main control unit 110, such as a mobile phone or a management host.

[0077] Furthermore, the speed control module includes a speed control unit and a storage unit, with the data terminal of the speed control unit connected to the storage unit; the storage unit stores preset test signals corresponding to different frequencies; wherein:

[0078] The speed control unit is used to, after receiving the calibration signal, retrieve a preset test signal from the storage unit at each preset transmission time and transmit it; wherein there are multiple preset transmission times, and the timing time corresponding to each preset transmission time is less than the preset time.

[0079] It is understandable that in practical applications, the wind turbine control signal may require different frequencies under different operating scenarios; and the degree to which different frequency signals are affected by wire resistance or other interferences is also different. Therefore, in order to achieve accurate transmission of wind speed control signals at different frequencies, this embodiment sets preset test signals at different frequencies to determine the degree of attenuation of signals at different frequencies, and then determines the voltage compensation signal corresponding to the signals at different frequencies, so as to obtain the optimal wind speed control signal at different frequencies.

[0080] The storage unit stores preset test signals corresponding to different frequencies. When a preset test signal needs to be sent, the speed control unit retrieves the corresponding preset test signal from the storage unit and sends it.

[0081] To ensure accurate detection of preset test signals at different frequencies, this embodiment divides the period from system power-on to a preset time into multiple signal transmission cycles using preset transmission times. The specific preset transmission times can be set based on actual needs. For example, the period from system power-on to the preset time can be evenly divided according to the number of preset test signals. For instance, if the preset time is 500ms and the number of preset test signals is 5 (1kHz, 2kHz, 3kHz, 4kHz, and 5kHz), then the preset time can be divided into 5 equal parts: 0ms (system power-on) serves as one preset transmission time for transmitting the 1kHz preset test signal; 100ms serves as another preset transmission time for transmitting the 2kHz preset test signal. The system transmits signals at preset intervals: 200ms for a 3kHz preset test signal, 300ms for a 4kHz preset test signal, and 400ms for a 5kHz preset test signal. This allows for setting five preset transmission intervals within 500ms. Within the signal transmission cycle corresponding to each preset interval, a preset test signal is transmitted. The signal detection module 300 confirms the preset test signal, and the wind speed signal transmission module determines and stores the voltage compensation signal corresponding to that frequency preset signal. After the preset time is reached, the wind speed signal transmission module can determine the voltage compensation signal corresponding to all preset test signals.

[0082] When the wind speed signal sending module sends the wind speed control signal, it first determines the target signal frequency of the wind speed control signal and matches the voltage compensation signal corresponding to the target signal frequency, and then generates the wind speed control signal based on the voltage compensation signal.

[0083] This embodiment realizes the determination of the voltage compensation signal for multi-frequency wind speed control signals.

[0084] Furthermore, the fan speed control board 200 includes a control unit and a filtering unit; the output terminal of the control unit is connected to the input terminal of the filtering unit, and the output terminal of the filtering unit is connected to the input terminal of the fan speed control board 200; wherein:

[0085] The control unit is used to send a square wave signal corresponding to the standard voltage to the filtering unit;

[0086] The filtering unit is used to generate a sine wave signal corresponding to the square wave signal, and send the sine wave signal as the preset test signal to the wind speed signal output module 100.

[0087] In this embodiment, a filtering unit is used to output a sine wave signal.

[0088] The control unit outputs a square wave signal to the filtering unit based on the frequency and voltage of the preset test signal to be output; the filtering unit filters the square wave signal to obtain a sine wave signal with the same frequency and voltage, and sends the sine wave signal to the wire as the preset test signal.

[0089] It is understood that a sine wave contains only one frequency component in the frequency domain. Therefore, in this embodiment, the preset test signal is sent in the form of a sine wave, which enables the output response to uniquely correspond to the input frequency and avoids the influence of signals with multiple frequency components on the measurement results.

[0090] The specific structure of the filter unit can be set according to actual needs, such as an RC filter circuit.

[0091] Further, see Figure 3 In another embodiment, the temperature controller system includes a temperature controller 10 and a fan speed control board 200; the fan speed signal output module 100 is disposed within the temperature controller 10; the signal detection module 300 is disposed on the fan speed control board 200, and the detection end of the signal detection module 300 is connected to the input end of the fan speed control board 200; wherein:

[0092] The wind speed signal output module 100 is used to send a preset test signal to the wind turbine speed control board 200 so that the signal detection module 300 can detect the detection voltage, wherein the voltage value of the preset test signal output by the wind speed signal output module 100 is the standard voltage.

[0093] In this embodiment, the signal detection module 300 is set on one side of the fan speed control board 200; at this time, the preset test signal is sent from the wind speed signal output module 100 to the wire and transmitted to the fan speed control board 200 and the signal detection module 300.

[0094] Understandably, the signal detection module 300 needs to send the detected voltage to the wind speed signal output module 100. Therefore, when the signal detection module 300 is set on the fan speed control board 200, a communication line needs to be added between the temperature controller 10 and the fan speed control board 200 to realize communication between the signal detection module 300 and the wind speed signal output module 100.

[0095] With the signal detection module 300 located on one side of the fan speed control board 200; the fan signal output module includes a main control unit 110, a temperature controller start-up detection module, and a temperature controller timing module; wherein:

[0096] The power-on detection terminal of the main control unit 110 is connected to the output terminal of the temperature controller power-on detection module, and the input terminal of the temperature controller power-on detection module is connected to the temperature controller timing module; wherein:

[0097] The thermostat power-on detection module is used to send a calibration signal to the main control unit 110 when the system is powered on, so that the main control unit 110 sends the preset test signal, stops sending the wind speed control signal, and sends a timing signal to the thermostat timing module, so that the thermostat timing module starts timing.

[0098] The main control unit 110 is used to stop sending the preset test signal and start sending the fan control signal after the timing module of the temperature controller reaches the preset time.

[0099] It is understood that in this embodiment, the preset test signal is sent from the fan signal output module to the wind speed signal output module 100 via a wire. However, when the temperature controller system is running normally, the wind speed control signal needs to be sent from the wind speed signal output module 100 to the fan signal output module via a wire. That is, both the preset test signal and the wind speed control signal are transmitted through the wire. Therefore, if the fan signal output module outputs the preset test signal at the same time as the wind speed control signal output module 100 outputs the wind speed control signal to the wire, the two signals will interfere with each other, making it impossible to accurately detect the preset test signal. To avoid the conflict between the wind speed control signal and the preset test signal, in this embodiment, the preset test signal is sent within a certain period of time after the system is powered on, so as to determine the voltage compensation signal.

[0100] Specifically, a thermostat power-on detection module and a thermostat timing module are set up. When the thermostat system is powered on, the thermostat power-on detection module detects that the system is powered on, sends a calibration signal to the main control unit 110, and sends a timing signal to the thermostat timing module.

[0101] The calibration signal is used to indicate the transmission of a preset test signal.

[0102] The timing signal is used to instruct the temperature controller timing module to start timing.

[0103] After receiving the calibration signal, the main control unit 110 sends a preset test signal to the wire, so that the signal detection module 300 can detect the preset test signal to determine the voltage compensation signal.

[0104] After the timing module of the temperature controller reaches the preset time, it is considered that the voltage compensation signal is confirmed. At this time, the main control unit 110 stops sending the preset test signal and starts sending the wind speed control signal.

[0105] Understandably, during the period when the main control unit 110 sends the preset test signal, the main control unit 110 stops sending the wind speed control signal; and after the preset time is reached, the main control unit 110 stops sending the preset test signal and starts sending the wind speed control signal.

[0106] The specific value of the preset time can be set based on actual needs. However, in order to avoid affecting the normal operation of the fan, the preset time should not be set too large. For example, the preset time can be set to 500ms.

[0107] The main control unit 110 can also send preset test signals at different frequencies. For specific settings, please refer to the settings of the storage unit in the aforementioned speed control module. These will not be elaborated here.

[0108] Further, see Figure 4 The wind speed signal output module 100 includes a main control unit 110 and a signal output unit 120; the input terminal of the main control unit 110 serves as the input terminal of the wind speed signal output module 100, the output terminal of the main control unit 110 is connected to the input terminal of the signal output unit 120, and the output terminal of the signal output unit 120 serves as the output terminal of the wind speed signal output module 100; wherein:

[0109] The main control unit 110 is used to compare the detected voltage with the standard voltage corresponding to the test signal to obtain a voltage compensation signal, generate an output control signal based on the voltage compensation signal, and send the output control signal to the signal output unit 120.

[0110] The signal output unit 120 is used to send the wind speed control signal corresponding to the output control signal to the fan speed control board 200.

[0111] The main control unit 110 is used to determine the voltage compensation signal and generate an output control signal based on the voltage compensation signal.

[0112] The output control signal is used to indicate the specific parameters of the wind speed control signal.

[0113] The signal output unit 120 generates a wind speed control signal based on the output control signal and then sends the wind speed control signal to the conductor.

[0114] See Figure 5 The specific method for determining the voltage compensation signal can be set based on actual needs, such as first determining the impedance characteristics by detecting the voltage and comparing it with the standard voltage.

[0115]

[0116] Where G represents the impedance characteristic, Vout To detect the effective value of the voltage, V in This is the effective value of the standard voltage.

[0117] After obtaining the impedance characteristics, the voltage value of the wind speed control signal that the wind speed control signal output module 100 needs to output when the wind speed control signal received by the wind turbine speed control board 200 is a standard voltage can be determined based on the impedance characteristics. That is:

[0118]

[0119] Among them, V d The voltage value of the wind speed control signal that the wind speed signal output module 100 needs to output; via V d -V in The voltage value of the voltage compensation signal can then be obtained; for example, if the effective value of the standard voltage is 10V and the effective value of the detected voltage is 8V, then:

[0120]

[0121] Solution V d =12.5V, therefore the voltage value of the voltage compensation signal can be obtained as 12.5-10=2.5V.

[0122] Furthermore, the signal output unit 120 includes a filtering subunit and an amplification subunit; the input terminal of the filtering subunit serves as the input terminal of the signal output unit 120, the output terminal of the filtering subunit is connected to the input terminal of the amplification subunit, and the output terminal of the amplification subunit serves as the output terminal of the signal output unit 120.

[0123] In this embodiment, the wind speed control signal is transmitted in the form of a sine wave.

[0124] The main control unit 110 outputs a square wave signal with the final voltage value obtained by adding the voltage of the voltage compensation signal to the standard voltage. After the square wave signal is converted into a sine wave signal by the filtering subunit, it is amplified to the required output size by the amplification subunit and then output to the wire to the fan speed control board 200.

[0125] The specific type of the filter subunit can be set based on actual needs, such as an RC filter circuit.

[0126] The specific type of amplification subunit can be set based on actual needs, such as an amplification circuit composed of operational amplifiers.

[0127] This utility model also protects a central air conditioning system, which includes a thermostat system. The structure of the thermostat system can be referred to in the above embodiments, and will not be repeated here. Therefore, since the central air conditioning system of this embodiment adopts the technical solution of the above-described thermostat system, it has all the beneficial effects of the above-described thermostat system.

[0128] In this utility model, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0129] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0130] Although embodiments of the present invention have been shown and described above, the scope of protection of the present invention is not limited thereto. It is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, and substitutions to the above embodiments within the scope of the present invention, and such changes, modifications, and substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A temperature controller system, characterized in that, The temperature controller system includes a wind speed signal output module, a fan speed control board, and a signal detection module; the output terminal of the wind speed signal output module is connected to the input terminal of the fan speed control board via a conductor, the detection terminal of the signal detection module is connected to one end of the conductor, and the output terminal of the signal detection module is connected to the input terminal of the wind speed signal output module; wherein: The signal detection module is used to detect the test signal output by the conductor to obtain the detection voltage, and send the detection voltage to the wind speed signal output module; The wind speed signal output module is used to compare the detected voltage with the standard voltage corresponding to the test signal to obtain a voltage compensation signal, generate a wind speed control signal based on the voltage compensation signal, and send the wind speed control signal to the wind turbine speed control board.

2. The temperature controller system as described in claim 1, characterized in that, The temperature controller system includes a temperature controller and a fan speed control board; the fan speed signal output module and the signal detection module are disposed within the temperature controller; the detection terminal of the signal detection module is connected to the output terminal of the signal detection module; wherein: The fan speed control board is used to send a preset test signal to the wind speed signal output module so that the signal detection module can detect the detection voltage, wherein the voltage value of the preset test signal output by the fan speed control board is the standard voltage.

3. The temperature controller system as described in claim 2, characterized in that, The fan speed control board includes a speed control module, a start-up detection module, and a timing module; wherein: The input terminal of the speed control module serves as the input terminal of the fan speed control board; the control terminal of the speed control module is connected to the output terminal of the power-on detection module; and the input terminal of the power-on detection module is connected to the timing module. Wherein: The power-on detection module is used to send a calibration signal to the speed control module when the system is powered on, so that the speed control module sends the preset test signal and a timing signal to the timing module, so that the timing module starts timing. The speed control module is used to stop sending the preset test signal after the timing module has reached a preset time.

4. The temperature controller system as described in claim 3, characterized in that, The speed control module includes a speed control unit and a storage unit, wherein the data terminal of the speed control unit is connected to the storage unit; the storage unit stores preset test signals corresponding to different frequencies; wherein: The speed control unit is used to, after receiving the calibration signal, retrieve a preset test signal from the storage unit at each preset transmission time and transmit it; wherein there are multiple preset transmission times, and the timing time corresponding to each preset transmission time is less than the preset time.

5. The temperature controller system as described in claim 2, characterized in that, The fan speed control board includes a control unit and a filtering unit; the output terminal of the control unit is connected to the input terminal of the filtering unit, and the output terminal of the filtering unit is connected to the input terminal of the fan speed control board; wherein: The control unit is used to send a square wave signal corresponding to the standard voltage to the filtering unit; The filtering unit is used to generate a sine wave signal corresponding to the square wave signal, and send the sine wave signal as the preset test signal to the wind speed signal output module.

6. The temperature controller system as described in claim 1, characterized in that, The temperature controller system includes a temperature controller and a fan speed control board; the fan speed signal output module is located inside the temperature controller; the signal detection module is located on the fan speed control board, and the detection end of the signal detection module is connected to the input end of the fan speed control board; wherein: The wind speed signal output module is used to send a preset test signal to the wind turbine speed control board so that the signal detection module can detect the detection voltage, wherein the voltage value of the preset test signal output by the wind speed signal output module is the standard voltage.

7. The temperature controller system as described in claim 1, characterized in that, The wind speed signal output module includes a main control unit and a signal output unit; the input terminal of the main control unit serves as the input terminal of the wind speed signal output module, the output terminal of the main control unit is connected to the input terminal of the signal output unit, and the output terminal of the signal output unit serves as the output terminal of the wind speed signal output module; wherein: The main control unit is used to compare the detected voltage with the standard voltage corresponding to the test signal to obtain a voltage compensation signal, generate an output control signal based on the voltage compensation signal, and send the output control signal to the signal output unit. The signal output unit is used to send the wind speed control signal corresponding to the output control signal to the fan speed control board.

8. The temperature controller system as described in claim 7, characterized in that, The signal output unit includes a filtering subunit and an amplification subunit; the input terminal of the filtering subunit serves as the input terminal of the signal output unit, the output terminal of the filtering subunit is connected to the input terminal of the amplification subunit, and the output terminal of the amplification subunit serves as the output terminal of the signal output unit.

9. The temperature controller system as described in claim 1, characterized in that, The signal detection module is a voltage detection circuit.

10. A central air conditioning system, characterized in that, The central air conditioning system includes a thermostat system as described in any one of claims 1 to 9.

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