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A temperature sensor fault judgment method and device

A temperature sensor and fault judgment technology, applied in the field of temperature sensors, can solve problems such as misjudgment prone to occur, and achieve the effect of ensuring normal operation and avoiding misjudgment

Active Publication Date: 2020-12-25
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a temperature sensor fault judgment method and device, so as to avoid problems such as misjudgment that is prone to occur in the existing temperature sensor fault judgment method

Method used

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  • A temperature sensor fault judgment method and device
  • A temperature sensor fault judgment method and device
  • A temperature sensor fault judgment method and device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0042]The embodiment of the present invention provides an air conditioner 1 to improve the problem that the existing air conditioner 1 is easy to misjudge the fault condition of the temperature sensor 5. Seefigure 1 , Is a functional block diagram of the air conditioner 1 provided by an embodiment of the present invention. The air conditioner 1 includes a memory 3, a processor 2, a temperature sensor failure judgment device 4, a temperature sensor 5, an input unit 6, and a display unit 7. Among them, the processor 2 is electrically connected to the memory 3, the temperature sensor 5, the input unit 6, and the display unit 7. The temperature sensor failure judging device 4 includes at least one that can be stored in the memory 3 in the form of software or firmware.

[0043]The memory 3 can be used to store software programs and units, such as the program instructions / units corresponding to the temperature sensor failure judgment device 4 and method in the embodiment of the present inven...

no. 2 example

[0050]This embodiment provides a temperature sensor fault judgment method to improve the accuracy of the temperature sensor 5 fault judgment, and to improve the existing fault detection method with a single judgment condition, which is prone to misjudgment and other problems. Seefigure 2 ,figure 2 The flowchart of the temperature sensor fault judgment method provided in this embodiment is shown.

[0051]Step S10: Obtain the temperature value T output by the temperature sensor 5.

[0052]It is understandable that the temperature sensor 5 has an output port, and the output port of the temperature sensor 5 is used to output the temperature signal obtained by its detection. After processing the temperature signal, the temperature value T output by the temperature sensor 5 can be obtained. Preferably, the temperature value T(n) output by the temperature sensor 5 can be obtained every preset time interval.

[0053]Step S20: Determine whether the acquired temperature value T output by the temperatu...

no. 3 example

[0075]This embodiment provides a temperature sensor failure judgment device 4, please refer toFigure 4 ,Figure 4 A schematic diagram of functional units of the temperature sensor failure judgment device 4 provided by this embodiment is shown.

[0076]It should be noted that the basic principles and technical effects of the temperature sensor failure judgment device 4 provided in this embodiment are basically the same as those of the first embodiment. For a brief description, this embodiment will not be described in detail. This embodiment does not introduce details, please refer to the related content in the first embodiment.

[0077]The temperature sensor failure judgment device 4 includes an acquisition unit 8, a first judgment unit 9, a first generation unit 10, a second judgment unit 11, a second generation unit 12, a third judgment unit 13, a failure output unit 14, and a normal signal output unit 15.

[0078]The acquiring unit 8 is used to acquire the temperature value T output by the ...

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Abstract

The invention provides a fault determining method and device of a temperature sensor. A temperature value output by the temperature value is obtained, whether the temperature value is greater than a preset upper temperature limit or lower than a preset lower temperature limit is determined, if YES, an output temperature range of the temperature sensor is generated by calculation, whether the output temperature range of the temperature sensor is lower than a present range value is determined, and if YES, it is determined that the temperature sensor has a fault, and a fault signal is output. Theoutput range of the temperature sensor is determined to avoid misjudgment caused by a single determination condition. The sensor whose output signals are beyond the preset range due to severe operation condition is avoided from being determined to be have faults or generating mis-protection, and normal work of electrical equipment can be ensured.

Description

Technical field[0001]The present invention relates to the technical field of temperature sensors, in particular to a method and device for judging a temperature sensor failure.Background technique[0002]Temperature sensors are often used in various electrical equipment. In order to ensure the safe operation of electrical equipment, the temperature sensor fault detection function is usually set. When a fault is detected, the electrical equipment is controlled to stop working, so as to prevent the electrical equipment from detecting the wrong temperature when the temperature sensor fails. Operation causes danger. The traditional fault detection method is to set the range of the temperature sensor output signal. If the range is exceeded, the sensor is considered to be faulty. When the operating conditions of electrical equipment are relatively bad, the normal sensor output signal may also exceed the set range and cause false protection, resulting in electrical appliances. The device is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00
CPCG01K15/007
Inventor 李发顺黄绍敏
Owner AUX AIR CONDITIONING LTD BY SHARE LTD