Fault-tolerant control method and device for temperature controller, temperature controller and air conditioning unit

Abstract

The invention provides a fault-tolerant control method and device for a temperature controller, the temperature controller and an air conditioning unit. The fault-tolerant control method comprises the steps that the real load condition of each binding post of the temperature controller is detected; judging whether the wiring is correct or not according to the real load condition of each binding post of the temperature controller; according to the wiring condition, the load control strategy of the temperature controller is automatically adjusted. According to the fault-tolerant control method for the temperature controller, whether wiring errors exist or not is judged, if the wiring errors exist, the temperature controller can automatically adjust the strategy according to the detection condition and the wiring condition, so that a correct load is started, the temperature controller does not need to be disassembled by an operator to adjust wiring again, and in the assembling process of the temperature controller, the assembly efficiency of the temperature controller is greatly improved. Therefore, a user does not need to worry about wrong wiring, the installation efficiency of the temperature controller is improved, and the technical problems that in the prior art, the wiring efficiency of the temperature controller is low, the error of wrong wiring is likely to occur, and the temperature controller needs to be disassembled to readjust wiring after wrong wiring are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fault-tolerant control of thermostats, and in particular to a fault-tolerant control method and device for thermostats, a thermostat and an air-conditioning unit. Background Art

[0002] Central air conditioner terminal fan disk usually adopts AC three-speed fan and uses thermostat for control due to cost considerations. However, the wiring scheme of thermostat and thermostat fan disk is relatively complicated. The thermostat end needs to connect multiple lines such as live wire, neutral wire, fan high-speed, fan mid-speed, fan low-speed, water valve line, etc. This complex wiring method increases the difficulty of installation, is cumbersome to install, and is prone to wrong wiring. At present, there is no good solution in the industry.

[0003] If the high, medium and low gears are connected incorrectly, the operating wind speed will be inconsistent with the set wind speed. If the high and low gear wires are connected reversely, the fan will run at low gear when the high gear is set, and the fan will run at high gear when the low gear is set. If a wind gear wire is connected reversely with the water valve wire, the fan and water valve will not open at the same time, and the indoor temperature cannot be adjusted normally.

[0004] At present, there is no effective solution in the industry to simplify this complex wiring method and reduce the occurrence of wiring errors. This makes the installation process cumbersome, the thermostat wiring efficiency is low, and it is easy to make mistakes in connecting the wrong wires. After connecting the wrong wires, the thermostat must be removed and the wiring must be readjusted, which increases the cost of maintenance and debugging.

[0005] Therefore, the prior art needs to be further developed. Summary of the invention

[0006] The purpose of the present invention is to overcome the above technical deficiencies and provide a fault-tolerant control method and device for a thermostat, a thermostat and an air-conditioning unit to solve the technical problems in the related art that the thermostat wiring efficiency is low, the wrong wiring errors are prone to occur, and the thermostat needs to be removed and the wiring needs to be readjusted after the wrong wiring is connected.

[0007] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a temperature controller fault-tolerant control method is provided, comprising:

[0008] Detect the actual load condition of each terminal of the thermostat;

[0009] Determine whether the wiring is correct based on the actual load of each terminal of the thermostat;

[0010] Automatically adjust the thermostat load control strategy according to the wiring conditions.

[0011] Furthermore, according to the actual load of each terminal of the thermostat, determine whether the wiring is correct, specifically:

[0012] Compare the actual load condition of each thermostat terminal with the preset value;

[0013] If the comparison results are consistent, it is determined that the wiring is correct;

[0014] If the comparison results are inconsistent, it is determined that the wiring is wrong.

[0015] Furthermore, according to the wiring conditions, the thermostat load control strategy is automatically adjusted, including:

[0016] If the wiring is correct, the thermostat load control strategy remains unchanged;

[0017] If the wiring is wrong, the corresponding terminal is defined as the correct load condition according to the comparison result, and when the load instruction is received, the correct terminal is automatically closed to turn on the correct load.

[0018] Furthermore, the actual load condition of each terminal of the thermostat is detected, including:

[0019] According to the real load current of each terminal of the thermostat, a first load voltage of each terminal is obtained;

[0020] Compare the actual load on each terminal of the thermostat with the preset value, specifically:

[0021] Sort the first load voltages of the various binding posts by magnitude;

[0022] The obtained ranking is compared with a first preset ranking, wherein the first preset ranking is a pre-stored ranking of the correct load currents of the loads.

[0023] Further, according to the real load current of each terminal of the thermostat, a first load voltage of each terminal is obtained, including:

[0024] All loads are connected to the primary side of the current transformer in sequence, and the first load voltage output by the current transformer secondary side and the real load current mutual induction is obtained in sequence.

[0025] Furthermore, the actual load condition of each terminal of the thermostat is detected, including:

[0026] According to the real load resistance of each terminal of the thermostat, a second load voltage of each terminal is obtained;

[0027] Compare the actual load on each terminal of the thermostat with the preset value, specifically:

[0028] sorting the second load voltages of the respective binding posts according to magnitude;

[0029] The obtained sorting is compared with a second preset sorting, wherein the second preset sorting is a pre-stored sorting of the correct load resistances of the loads.

[0030] Further, according to the real load resistance of each terminal of the thermostat, a second load voltage of each terminal is obtained, including:

[0031] All loads are connected to the series voltage divider circuit in sequence, and the second load voltage of each load is obtained in sequence.

[0032] A temperature controller fault-tolerant control device, the temperature controller fault-tolerant control device comprising:

[0033] Detection module, detects the actual load condition of each terminal of the thermostat;

[0034] The judgment module determines whether the wiring is correct according to the actual load of each terminal of the thermostat;

[0035] The control module automatically adjusts the thermostat load control strategy according to the wiring conditions.

[0036] A temperature controller comprises the temperature controller fault-tolerant control device mentioned above.

[0037] An air conditioning unit comprises the above-mentioned fault-tolerant control method for the thermostat.

[0038] Beneficial effects:

[0039] 1. By adopting the fault-tolerant control method of the thermostat in this embodiment, the actual load condition of each terminal of the thermostat is first detected to determine whether there is a wiring error. If there is a wrong connection, the thermostat can automatically adjust the strategy according to the detection condition and the wiring condition, so as to turn on the correct load. There is no need for the operator to remove the thermostat and readjust the wiring. During the assembly process of the thermostat, except for the neutral wire and the live wire, other load wires can be connected at will without worrying about wrong connection, which improves the installation efficiency of the thermostat and solves the technical problems of low wiring efficiency of the thermostat in the related technology, easy to make mistakes in wrong connection, and needing to remove the thermostat and readjust the wiring after wrong connection.

[0040] 2. The self-check module (current mutual inductance circuit / resistance voltage divider circuit) obtains the load condition of each load terminal of the thermostat in turn, and compares it with the preset condition to determine whether the connection is wrong. If it is determined that the loads are connected incorrectly, the thermostat can automatically adjust the strategy and turn on the correct load without the need for the installer to make adjustments.

[0041] 3. In the fault-tolerant control method of the thermostat of the present embodiment, if the wiring is correct, the load control strategy of the thermostat will not be adjusted. If the wiring is wrong, the load control strategy of the thermostat will be adjusted according to the comparison result, and the internal control logic will be rewritten to automatically adjust the correct load that needs to be turned on, so that the correct load can be turned on according to the load instruction, and no control error will occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a flow chart of a temperature controller fault-tolerant control method adopted in an embodiment of the present invention;

[0043] Figure 2 is a wiring diagram of a thermostat used in an embodiment of the present invention;

[0044] Figure 3 is a simplified structural diagram of a temperature controller fault-tolerant control device used in an embodiment of the present invention;

[0045] Figure 4 is a simplified structural diagram of a temperature controller used in an embodiment of the present invention;

[0046] Figure 5 It is a flow chart of a feasible embodiment of the temperature controller fault-tolerant control method adopted in the embodiment of the present invention.

[0047] The above drawings include the following reference numerals:

[0048] 10. Detection module; 20. Judgment module; 30. Control module;

[0049] 100. Fault-tolerant control device of thermostat;

[0050] 1000. Thermostat. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0052] Example 1

[0053] According to an embodiment of the present invention, a temperature controller fault tolerance control method is provided. Figures 1 to 5 ,include:

[0054] Detect the actual load condition of each terminal of the thermostat;

[0055] Determine whether the wiring is correct based on the actual load of each terminal of the thermostat;

[0056] Automatically adjust the thermostat load control strategy according to the wiring conditions.

[0057] By adopting the fault-tolerant control method of the thermostat in this embodiment, the actual load condition of each terminal of the thermostat is first detected to determine whether there is a wiring error. If there is a wrong connection, the thermostat can automatically adjust the strategy according to the detection condition and the wiring condition to turn on the correct load. There is no need for the operator to remove the thermostat and readjust the wiring. During the assembly process of the thermostat, except for the neutral wire and the live wire, other load wires can be connected at will without worrying about wrong connection, thereby improving the installation efficiency of the thermostat and solving the technical problems in the related art that the thermostat wiring efficiency is low, the wrong connection error is prone to occur, and the thermostat needs to be removed and the wiring needs to be readjusted after the wrong connection.

[0058] In some embodiments, the thermostat end needs to be connected to the live wire, the neutral wire, the fan high-end, the fan mid-end, the fan low-end, the water valve line and other load lines. By adopting the thermostat fault-tolerant control method in this embodiment, in addition to the neutral wire and the live wire, the fan high-end, the fan mid-end, the fan low-end, the water valve line and other load lines can be connected at will, thereby improving the wiring efficiency.

[0059] In the fault-tolerant control method of the thermostat of this embodiment, whether the wiring is correct is determined according to the actual load condition of each terminal of the thermostat, specifically:

[0060] Compare the actual load condition of each thermostat terminal with the preset value;

[0061] If the comparison results are consistent, it is determined that the wiring is correct;

[0062] If the comparison results are inconsistent, it is determined that the wiring is wrong.

[0063] In the fault-tolerant control method of the thermostat of the present embodiment, the actual load condition of each terminal of the thermostat is compared with the preset value to determine whether there is a wiring error. At the same time, the actual wiring matching condition is determined to determine which type of load is connected to the terminal with the wrong connection. For example, after detection and comparison, it is found that the mid-range terminal of the thermostat is connected to the high-end of the actual load, and the high-end terminal of the thermostat is connected to the mid-range of the actual load.

[0064] In the thermostat fault-tolerant control method of this embodiment, the thermostat load control strategy is automatically adjusted according to the wiring conditions, including:

[0065] If the wiring is correct, the thermostat load control strategy remains unchanged;

[0066] If the wiring is wrong, the corresponding terminal is defined as the correct load condition according to the comparison result, and when the load instruction is received, the correct terminal is automatically closed to turn on the correct load.

[0067] In the fault-tolerant control method of the thermostat of this embodiment, if the wiring is correct, the load control strategy of the thermostat is not adjusted. If the wiring is wrong, the load control strategy of the thermostat is adjusted according to the comparison result, the internal control logic is rewritten, and the correct load to be turned on is automatically adjusted, so that the correct load is turned on according to the load instruction, and no control error occurs. For example, the detection result finds that the mid-range terminal of the thermostat is connected to the high-end of the real load, and the high-end terminal of the thermostat is connected to the mid-range of the real load. When the high-end instruction is set on the thermostat, the thermostat closes the control switch at the mid-range terminal, and the fan runs in the high-end mode; when the mid-range instruction is set on the thermostat, the thermostat closes the control switch at the high-end terminal, and the fan runs in the mid-range mode.

[0068] In the fault-tolerant control method for the thermostat of the present embodiment, two self-detection methods, namely, a current detection method and a resistance detection method, can be used to detect the actual load condition of each terminal of the thermostat, as described below.

[0069] In the fault-tolerant control method of the thermostat of this embodiment, detecting the actual load condition of each terminal of the thermostat includes:

[0070] According to the real load current of each terminal of the thermostat, a first load voltage of each terminal is obtained;

[0071] Compare the actual load on each terminal of the thermostat with the preset value, specifically:

[0072] Sort the first load voltages of the various binding posts by magnitude;

[0073] The obtained ranking is compared with a first preset ranking, wherein the first preset ranking is a pre-stored ranking of the correct load currents of the loads.

[0074] Specifically, by adopting the current detection method, the first load voltage of each terminal is obtained. Since the correct load current of each load is different, the first load voltage should have the same distribution pattern. If the order of the first load voltage is consistent with the first preset order, it means that the thermostat is correctly wired. If the order of the first load voltage is inconsistent with the first preset order, it means that the thermostat has a wiring error. Moreover, according to the order of the size arrangement of the first load voltage, the actual load type connected to the terminal can be judged accordingly.

[0075] In some embodiments, the thermostat includes loads such as fan high-end, fan mid-end, fan low-end, and water valve, and the first preset order of load current is: fan high-end> fan mid-end> fan low-end> water valve.

[0076] Specifically, since the magnitude of the real load current is ranked as high-end>middle-end>low-end>water valve, the first load voltage obtained by the thermostat is also ranked as high-end>middle-end>low-end>water valve. The first load voltages are ranked from high to low, and the load with the highest first load voltage is determined to be the real high-end, the load with the second first load voltage is the real middle-end, the load with the third first load voltage is the real low-end, and the load with the fourth first load voltage is the real water valve.

[0077] In the fault-tolerant control method of the thermostat of this embodiment, obtaining the first load voltage of each terminal according to the real load current of each terminal of the thermostat includes:

[0078] All loads are connected to the primary side of the current transformer in sequence, and the first load voltage output by the current transformer secondary side and the real load current mutual inductance is obtained in sequence.

[0079] Specifically, a current transformer can be used, the load is connected to the primary side of the current transformer, the mutual inductance voltage is obtained by the secondary side sampling resistor, and the first load voltage obtained by the mutual inductance is connected to the temperature controller control module.

[0080] Specifically, the self-test process of the current detection method is as follows: after power-on, the first step is to attract the high-end control switch at the high-end terminal, and obtain the load current / the first load voltage of the mutual inductance after the high-end control switch is attracted after the operation is stable. The second step is to disconnect the high-end control switch, attract the mid-range control switch at the mid-range terminal, and obtain the load current / the first load voltage of the mutual inductance after the mid-range control switch is attracted after the operation is stable. The third step is to disconnect the mid-range control switch, attract the low-range control switch at the low-range terminal, and obtain the load current / the first load voltage of the mutual inductance after the low-range control switch is attracted after the operation is stable. The fourth step is to disconnect the low-range control switch, attract the water valve control switch at the water valve terminal, and obtain the load current / the first load voltage of the mutual inductance after the water valve control switch is attracted after the operation is stable. Determine whether the order of the first load voltages obtained in sequence is consistent with the first preset order (high-end>mid-range>low-range>water valve). If they are consistent, it means that the wiring is correct. If they are inconsistent, it is determined that the wiring is wrong.

[0081] In the fault-tolerant control method of the thermostat of this embodiment, detecting the actual load condition of each terminal of the thermostat includes:

[0082] According to the real load resistance of each terminal of the thermostat, a second load voltage of each terminal is obtained;

[0083] Compare the actual load on each terminal of the thermostat with the preset value, specifically:

[0084] sorting the second load voltages of the respective terminals according to magnitude;

[0085] The obtained sorting is compared with a second preset sorting, wherein the second preset sorting is a pre-stored sorting of the correct load resistances of the loads.

[0086] Specifically, by adopting the resistance detection method, the second load voltage of each terminal is obtained. Since the correct load resistance of each load is different, the second load voltage will also have the same distribution pattern. If the order of the second load voltage is consistent with the second preset order, it means that the thermostat is correctly wired. If the order of the second load voltage is inconsistent with the second preset order, it means that the thermostat has a wiring error. Moreover, according to the order of the size arrangement of the second load voltage, the actual load type connected to the terminal can be judged accordingly.

[0087] In some embodiments, the thermostat includes loads such as fan high-end, fan mid-end, fan low-end, and water valve, and the second preset order of load resistors is: fan high-end < fan mid-end < fan low-end < water valve.

[0088] In the fault-tolerant control method of the thermostat of this embodiment, obtaining the second load voltage of each terminal according to the real load resistance of each terminal of the thermostat includes:

[0089] All loads are connected to the series voltage divider circuit in sequence, and the second load voltage of each load is obtained in sequence.

[0090] Specifically, since the real load resistance is high-end < mid-range < low-end < water valve, the second load voltages can be obtained in sequence through the series voltage divider circuit when the load is not working, and the voltage divided by the real load is high-end < mid-range < low-end < water valve. The second load voltages are sorted from high to low, and the load with the highest second load voltage is determined to be the real water valve, the load with the second second load voltage is the real low-end, the load with the third second load voltage is the real mid-range, and the load with the fourth second load voltage is the real high-end.

[0091] Specifically, the self-test process of the resistance detection method is: after power-on, in the non-load working state, the second load voltage obtained by each load is obtained in sequence through the series voltage divider circuit. It is determined whether the second load voltages obtained in sequence are consistent with the second preset sequence (high range < mid-range < low range < water valve). If they are consistent, it means that the wiring is correct. If they are inconsistent, it is determined that the wiring is wrong.

[0092] In some embodiments, the temperature controller fault-tolerant control method further includes:

[0093] After the thermostat is powered on, the self-test can be set through the button module. The thermostat uses the current detection method or the resistance detection method to detect each load in turn.

[0094] Example 2

[0095] In the temperature controller fault-tolerant control device of this embodiment, see Figure 3 , the temperature controller fault-tolerant control device 100 comprises:

[0096] The detection module 10 detects the actual load condition of each terminal of the thermostat;

[0097] The judging module 20 judges whether the wiring is correct according to the actual load condition of each terminal of the thermostat;

[0098] The control module 30 automatically adjusts the thermostat load control strategy according to the wiring conditions.

[0099] Specifically, the detection module 10 includes a current mutual inductance circuit and a resistance voltage divider circuit, so that the actual load condition of each terminal of the thermostat can be obtained by using a current detection method or a resistance detection method.

[0100] By adopting the fault-tolerant control device 100 of the thermostat in this embodiment, the actual load condition of each terminal of the thermostat is automatically detected by the detection module 10, and whether there is a wiring error is determined by the judgment module 20. If there is a wrong connection, the thermostat can automatically adjust the strategy through the control module 30 according to the detection condition and the wiring condition, so as to turn on the correct load without the operator having to remove the thermostat and readjust the wiring.

[0101] During the assembly process of the thermostat 1000, except for the neutral wire and the live wire, other load wires can be connected at will without worrying about wrong connection, which improves the installation efficiency of the thermostat and solves the technical problems in the related technology of low efficiency of thermostat wiring, easy mistakes of wrong connection, and the need to remove the thermostat and readjust the wiring after wrong connection.

[0102] Example 3

[0103] In the thermostat of this embodiment, see Figure 1 The thermostat 1000 includes the above-mentioned thermostat fault-tolerant control device 100.

[0104] In some embodiments, the thermostat 1000 includes a detection module 10, a processor, a display interface, a key input module, etc. The detection module 10 includes a current mutual inductance circuit and a resistance voltage divider circuit, so that the actual load condition of each terminal of the thermostat can be obtained by using a current detection method or a resistance detection method, and the processor of the thermostat, that is, the control module 30, can process the information detected by the detection module to determine the load condition.

[0105] By adopting the thermostat 1000 in this embodiment, the actual load condition of each terminal of the thermostat 1000 is first detected to determine whether there is a wiring error. If there is a wrong connection, the thermostat 1000 can automatically adjust the strategy according to the detection condition and the wiring condition, so as to turn on the correct load. There is no need for an operator to remove the thermostat 1000 and readjust the wiring. During the assembly process of the thermostat 1000, except for the neutral wire and the live wire, other load wires can be connected at will without worrying about wrong connection, thereby improving the installation efficiency of the thermostat and solving the technical problems in the related art that the thermostat wiring efficiency is low, the wrong connection error is prone to occur, and the thermostat needs to be removed and the wiring needs to be readjusted after the wrong connection.

[0106] Example 4

[0107] In the air conditioning unit of the present embodiment, the air conditioning unit includes the above-mentioned thermostat fault-tolerant control method.

[0108] The fault-tolerant control method of the thermostat is applied to the air-conditioning unit of this embodiment. The actual load condition of each terminal of the thermostat is first detected to determine whether there is a wiring error. If there is a wrong connection, the thermostat can automatically adjust the strategy according to the detection condition and the wiring condition to turn on the correct load. There is no need for the operator to remove the thermostat and readjust the wiring. During the assembly process of the thermostat, except for the neutral wire and the live wire, other load wires can be connected at will without worrying about wrong connection. The installation efficiency of the thermostat is improved, and the technical problems of low efficiency of thermostat wiring, easy to make mistakes in wrong connection, and the need to remove the thermostat and readjust the wiring after wrong connection in the related technology are solved.

[0109] Example 5

[0110] In any one of the embodiments 1-5 and the attached Figure 2 and attached Figure 5 On this basis, a feasible specific implementation method is further proposed:

[0111] The thermostat includes a detection module, a processor, a display interface, a key input module, etc. The detection module can detect the load condition, and the processor of the thermostat processes the information detected by the detection module to determine the load condition.

[0112] The detection module solution can adopt the current detection method: a current transformer can be used, the load is connected to the primary side of the current transformer, the secondary side sampling resistor obtains the mutual inductance voltage, and the mutual inductance voltage is connected to the thermostat controller. Since the real load current is high-end>mid-end>low-end>water valve when turned on, the mutual inductance voltage obtained by the thermostat is high-end>mid-end>low-end>water valve. Sort the voltages from high to low, the load with the highest voltage is determined to be the real high-end, the load with the second voltage is the real mid-end, the load with the third voltage is the real low-end, and the load with the fourth voltage is the real water valve.

[0113] The self-test process of the current detection method is as follows:

[0114] After power-on, the first step is to attract the high-end relay, and after the operation is stable, obtain the load current / mutual inductance voltage after the high-end relay is attracted.

[0115] Step 2: Disconnect the high-range relay and energize the mid-range relay. After the operation stabilizes, obtain the load current / mutually inducted voltage after the mid-range relay is energized.

[0116] Step 3: Disconnect the mid-range relay and energize the low-range relay. After the operation stabilizes, obtain the load current / mutually inducted voltage after the low-range relay is energized.

[0117] Step 4: Disconnect the low-range relay, attract the water valve relay, and obtain the load current / mutual inductance voltage after the water valve relay is attracted after the operation is stable. Determine whether the voltage values ​​obtained in sequence are consistent with the preset voltage values ​​(mutual inductance voltage high-range> mid-range> low-range> water valve). If they are consistent, it means that the wiring is correct. If not, it is determined that the wiring is wrong.

[0118] The detection module solution can use the resistance detection method: the actual load resistance is high-end < mid-range < low-end < water valve. When the load is not working, the voltage of each load can be obtained in sequence through the series voltage divider circuit. The voltage obtained by the actual load is high-end < mid-range < low-end < water valve. Sort the voltages from high to low. The load with the highest voltage is determined to be the actual water valve, the load with the second highest voltage is the actual low-end, the load with the third highest voltage is the actual mid-range, and the load with the fourth highest voltage is the actual high-end.

[0119] The self-test process of the resistance detection method is as follows:

[0120] After power-on, in the non-load working state, the voltages obtained by each load are obtained in sequence through the series voltage divider circuit. It is determined whether the voltage values ​​obtained in sequence are consistent with the preset voltage values ​​(high range < mid range < low range < water valve). If they are consistent, it means that the wiring is correct. If they are inconsistent, it is determined that the wiring is wrong.

[0121] After the thermostat is powered on, the self-test can be set through the button module. The thermostat detects each load in turn. The self-test can determine whether the load wiring is correct. If the wiring is incorrect, the control strategy will be adjusted, the internal control logic will be rewritten, and the correct load that needs to be turned on will be automatically adjusted. For example, the test results show that the mid-range terminal of the thermostat is connected to the high-end of the real load, and the high-end terminal of the thermostat is connected to the mid-range of the real load. When the high-end is set on the thermostat, the thermostat closes the relay at the mid-range terminal, and the fan runs at the high-end; when the mid-range is set on the thermostat, the thermostat closes the relay at the high-end terminal, and the fan runs at the mid-range.

[0122] In the thermostat of this embodiment, the self-check module (current mutual inductance circuit / resistance voltage divider circuit) sequentially obtains the load condition of each load terminal of the thermostat, and compares it with the preset condition to determine whether the connection is wrong. If it is determined that the loads are connected wrongly, the thermostat can automatically adjust the strategy and turn on the correct load without the operator making adjustments.

[0123] In the thermostat of this embodiment, the load condition of each interface can be intelligently identified, and the load control strategy can be intelligently adjusted. Only the neutral and live wires need to be connected, and the high-end fan, mid-range fan, low-end fan, and water valve wires can be connected at will, thereby improving the wiring efficiency and intelligently adjusting the load control strategy. Wrong load connection will not occur, and the situation in which the thermostat needs to be removed and the wiring needs to be readjusted after the wrong load line is connected is avoided, thereby solving the problem of low efficiency in thermostat wiring and easy wrong connection of wires, which requires the thermostat to be removed and the wiring needs to be readjusted after the wrong connection of wires.

[0124] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0125] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0126] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0127] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0128] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A fault-tolerant control method for a temperature controller, characterized in that: include: Detect the actual load condition of each terminal of the thermostat; According to the actual load condition of each terminal of the thermostat, determine whether the wiring is correct; Automatically adjust the thermostat load control strategy according to the wiring conditions.

2. The temperature controller fault-tolerant control method according to claim 1, characterized in that: According to the actual load of each terminal of the thermostat, determine whether the wiring is correct, specifically: Compare the actual load condition of each terminal of the thermostat with the preset value; If the comparison results are consistent, it is determined that the wiring is correct; If the comparison results are inconsistent, it is determined that the wiring is wrong.

3. The temperature controller fault-tolerant control method according to claim 2, characterized in that: Automatically adjust the thermostat load control strategy according to the wiring conditions, including: If the wiring is correct, the thermostat load control strategy remains unchanged; If the wiring is wrong, the corresponding terminal is defined as the correct load condition according to the comparison result, and when the load instruction is received, the correct terminal is automatically closed to turn on the correct load.

4. The temperature controller fault-tolerant control method according to claim 2, characterized in that: Detecting the actual load condition of each terminal of the thermostat includes: Obtaining a first load voltage of each terminal according to the actual load current of each terminal of the thermostat; Compare the actual load of each terminal of the thermostat with the preset value, specifically: sorting the first load voltages of the respective binding posts according to magnitude; The obtained ranking is compared with a first preset ranking, wherein the first preset ranking is a pre-stored ranking of the correct load currents of the loads.

5. The fault-tolerant control method for a thermostat according to claim 4, characterized in that: According to the real load current of each terminal of the thermostat, obtaining the first load voltage of each terminal comprises: All loads are connected to the primary side of the current transformer in sequence, and the first load voltage output by the mutual induction of the secondary side of the current transformer and the real load current is obtained in sequence.

6. The temperature controller fault-tolerant control method according to claim 2, characterized in that: Detecting the actual load condition of each terminal of the thermostat includes: Obtaining a second load voltage of each terminal according to the real load resistance of each terminal of the thermostat; Compare the actual load of each terminal of the thermostat with the preset value, specifically: sorting the second load voltages of the respective binding posts according to magnitude; The obtained sorting is compared with a second preset sorting, wherein the second preset sorting is a pre-stored sorting of the correct load resistances of the loads.

7. The temperature controller fault-tolerant control method according to claim 6, characterized in that: According to the real load resistance of each terminal of the thermostat, the second load voltage of each terminal is obtained, including: All loads are connected to the series voltage divider circuit in sequence, and the second load voltage of each load is obtained in sequence.

8. A temperature controller fault-tolerant control device, characterized in that: The temperature controller fault-tolerant control device comprises: Detection module, detects the actual load condition of each terminal of the thermostat; A judgment module, judging whether the wiring is correct according to the actual load condition of each terminal of the thermostat; The control module automatically adjusts the thermostat load control strategy according to the wiring conditions.

9. A thermostat, characterized in that: The thermostat comprises the thermostat fault-tolerant control device described in claim 8.

10. An air conditioning unit, characterized in that: The air conditioning unit includes the thermostat fault-tolerant control method according to any one of claims 1 to 7.

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