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Air conditioner temperature detection loop and detection method

A technology of air conditioning temperature and detection method, which is applied in heating mode, space heating and ventilation, and control input involving air characteristics, etc., can solve problems such as the deterioration of loop detection accuracy, and achieve the effect of large temperature range and high detection accuracy

Inactive Publication Date: 2021-08-10
SHANGHAI MITSUBISHI ELECTRIC&SHANGLING AIR CONDITIONER & ELECTRIC APPLIANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For air conditioners used in some low-temperature or even ultra-cold regions, the detection accuracy of the low-temperature environment is often emphasized, and a voltage divider resistor Rr with a large resistance value is configured for the detection circuit, which leads to the deterioration of the detection accuracy of the circuit when the temperature is high in summer.

Method used

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  • Air conditioner temperature detection loop and detection method
  • Air conditioner temperature detection loop and detection method
  • Air conditioner temperature detection loop and detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Figure 6a It is the mode-temperature-resistance comparison table in the first embodiment of the present invention. In this embodiment, the microprocessor is provided with a mode-temperature-resistance comparison table; the microprocessor MICOM receives the air conditioner operation mode information and temperature information through the air conditioner remote control, estimates the air conditioner temperature value, and obtains the estimated Determine the temperature range of the air conditioner, and generate corresponding control information in combination with the mode-temperature-resistance comparison table, and adjust the resistance value output by the adjustable resistance module Rx. There are two operating modes of the air conditioner: cooling and heating. When the temperature is low, the heating mode is turned on, and when the temperature is high, the cooling mode is turned on.

[0060] When the ambient temperature is as high as 45°C, the air conditioner turns...

Embodiment 2

[0068] Figure 10 It is the temperature-resistance comparison table in the second embodiment of the present invention. The detection method adopted in this embodiment and the detection effect realized are similar to Embodiment 1, the difference is that a temperature-resistance comparison table is provided in the microprocessor described in this embodiment, and the microprocessor MICOM passes air conditioning The remote controller receives the temperature information checked when the air conditioner is turned on, estimates the temperature value of the air conditioner, obtains the estimated temperature of the air conditioner, judges the temperature range of the air conditioner, and generates corresponding control information in combination with the temperature-resistance comparison table, and adjusts the adjustable The resistance value output by the resistance module Rx.

Embodiment 3

[0070] Figure 11 Date-resistance value comparison table in the third embodiment of the present invention. The detection method and detection effect adopted in this embodiment are similar to Embodiment 1, the difference is that the microprocessor MICOM described in this embodiment receives date information through internal monitoring software, such as ink weather, estimates the temperature value of the air conditioner, and obtains The estimated air conditioner temperature, the temperature range of the air conditioner are judged, and the corresponding control information is generated in combination with the date-resistance comparison table, so as to adjust the resistance value output by the adjustable resistance module Rx.

[0071] The temperature is different in different months of the year, so the resistance value output by the adjustable resistance module Rx can be adjusted according to the change of the date. When a controller with date information or a mobile phone equipp...

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Abstract

The invention discloses an air conditioner temperature detection loop and a detection method. The air conditioner temperature detection loop comprises a microprocessor, a thermistor R and an adjustable resistor module Rx. The thermistor R and the adjustable resistor module Rx are arranged in a voltage division mode. The thermistor R is used for detecting the temperature of an air conditioner. The microprocessor is connected to a node between the thermistor R and the adjustable resistor module Rx and is in communication connection with the adjustable resistor module Rx. The microprocessor is used for detecting the voltage value of the adjustable resistor module Rx and adjusting the resistance value output by the adjustable resistor module Rx. The adjustable resistor module Rx is grounded. The adjustable resistor module Rx is used for outputting resistors with different resistance values. According to the air conditioner temperature detection loop and the detection method, the resistance value output by the adjustable resistor module Rx can be automatically adjusted, the applicable temperature range is large, and high detection precision is achieved under various temperature conditions.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner temperature detection circuit and a detection method. Background technique [0002] The temperature detection of the air conditioner, whether it is the detection of the ambient temperature, the temperature of the copper pipe, or the temperature of the compressor, currently uses a detection circuit composed of a "thermistor + voltage divider resistor". Such as figure 1 As shown, it includes a MICOM (microprocessor), a thermistor R and a voltage dividing resistor Rr. The thermistor R and the voltage dividing resistor Rr are set for voltage division, and the MICOM detects the voltage value of the voltage dividing resistor Rr. The detection principle of the temperature detection circuit is as follows: get the voltage value and resistance value of the thermistor R when the circuit voltage and the voltage value of the voltage dividing resistor R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/56F24F11/88F24F110/10
CPCF24F11/64F24F11/56F24F11/88F24F2110/10
Inventor 秦杰张旻甲斐昭裕
Owner SHANGHAI MITSUBISHI ELECTRIC&SHANGLING AIR CONDITIONER & ELECTRIC APPLIANCE CO LTD