A sensor-adaptive heating method

Abstract

The invention discloses a sensor-adaptive heating method, which is applied to a heating system. The heating system includes a controller, a heating device, a temperature sensor and a timer. The sensor-adaptive heating method includes the following steps: S1. Temperature The sensor detects the temperature T; S2. If the temperature T is higher than the heating threshold T 0 Then execute step S3, if the temperature T is lower than the heating threshold T 0 Then execute step S4; S3. Enter the standby mode, repeat step S1; S4. Enter the fast heating mode, start the heating device, and continue heating; S5. Whether the temperature T reaches the target temperature T 1 , if the temperature T does not reach the target temperature T 1 Then execute step S6, if the temperature T reaches the target temperature T 1 Then execute step S7; S6. Continue heating, repeat step S5; S7. Enter PWM adaptive heating mode, periodically turn on and off the heating device, the period is t 0 ; S8. Maintain the target temperature T 1 .

Description

technical field [0001] The invention relates to the field of electrochemical alcohol sensors, in particular to a sensor self-adaptive heating method. Background technique [0002] Drunk driving is one of the main causes of road traffic accidents. Exhaled alcohol content detection is an effective means for traffic police to prevent and control the phenomenon of drunk driving. Most of the currently used alcohol content measurement technologies are realized by using the principle of chemical reaction between the fuel cell type alcohol sensor and alcohol. Because the chemical reaction will be affected by temperature, and alcohol testing is mostly carried out outdoors, the breath alcohol content detector is greatly affected by temperature, and sometimes it cannot even complete the test. Current alcohol detectors generally use software to perform temperature compensation, but when the temperature is low, such as below -10°C, the response of the alcohol sensor becomes significant...

AI Technical Summary

Problems solved by technology

The disadvantages of this method of heating control are:

[0004] (1) The temperature sensor has a certain lag in sensing the temperature, and generally the distance between the closing threshold and the opening threshold of the heating is relatively large, resulting in a relatively large and unstable temperature change of the sensor, resulting in unstable operation of the temperature-sensitive sensor;

[0005] (2) There is no display of the heating progress, and the waiting process is long;

[0006] (3) The heating time is too concentrated, which will cause excessive power consumption due to heating in a certain period of time and damage the power supply

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