Fault detection method and system for air conditioner sensor
A fault analysis method and sensor technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems that are difficult to find and affect the operation of the unit, and achieve the effect of facilitating fault maintenance
Active Publication Date: 2020-12-15
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
However, when the sensor has sensor data deviation or drift failure, it is difficult to find out, which will affect the normal operation of the unit
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[0026] Such as figure 1 As shown, in the embodiment of the present invention, a method for analyzing a fault of an air conditioner sensor is provided in the embodiment of the present invention. The above steps will be respectively described below by taking the fault analysis of a sensor as an example. The method comprises steps S1-S6.
[0027] Step S1: The sensing values of multiple sensors of the air-conditioning unit are acquired multiple times, and the sensing values of the multiple sensors should be consistent in theory.
[0028] It should be noted that in the air-conditioning unit, under some specific conditions, the sensed values of some sensors should be the same in theory. For example, after the air conditioning unit is shut down for a period of time, the multiple temperature sensors in the unit should be consistent with the ambient temperature; the pressure detected by the pressure sensor at the same pipeline end in the shutdown state is also consistent. There...
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The invention discloses a fault detection method and system for air conditioner sensors. The method comprises the following steps: sensed values of a plurality of sensors of an air conditioner unit are obtained for many times, and the sensed values of the plurality of sensors are theoretically the same; after the sensed values of the plurality of sensors are obtained every time, a sensor suspectedto be failed is detected according to a deviation value between the sensed value of each sensor and a reference value obtained according to the sensed values of the plurality of sensors; and a continuous detection times for the sensor suspected to be failed is counted, and when the continuous detection times for the sensor suspected to be failed is greater than or equal to a set first detection times, the standard deviation of all the deviation values of the sensor in the detection with the first detection times is calculated, and denoted as a first standard deviation, and the fault type of the sensor is judged according to the first standard deviation. With the adoption of the technical scheme of the invention, the failed air conditioner sensor and a fault reason can be effectively detected.
Description
technical field [0001] The invention relates to the field of air conditioners, in particular to a fault detection method and system for an air conditioner sensor. Background technique [0002] The air conditioning unit needs to detect various sensor data of the unit in real time, and control based on the detected data, so the quality of the sensor is very important. [0003] The temperature sensor is the most widely used sensor on the air conditioning unit. When the sensor has obvious failures such as short circuit or open circuit, the unit can generally detect it easily and give an alarm. However, when the sensor has sensor data deviation or drift failure, it is difficult to find out, which will affect the normal operation of the unit. Contents of the invention [0004] The purpose of the present invention is to provide a fault detection method and system for an air-conditioning sensor in view of the technical problem that it is difficult to find the fault of the air-con...
Claims
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IPC IPC(8): F24F11/38F24F11/64
CPCF24F11/38F24F11/64
Inventor 刘华卓明胜颜超宋海川刘静楠
Owner GREE ELECTRIC APPLIANCES INC