Temperature sensor detection device

Abstract

The invention discloses a temperature sensor detection device which comprises a heating control unit, a warming oil cylinder, an oil temperature detection unit, a measured temperature sensor, a signal amplifying unit, a comparing unit and a display unit. The temperature sensor detection device can achieve circulation heating for engine oil through the heating control unit, oil layer temperature of a middle-upper layer, a middle layer and a lower layer of the warming oil cylinder keeps consistent, and possibility that due to oil temperature error, detection result distortion is caused by the measured temperature sensor is reduced to the lowest. Virtual temperature of the engine oil of the warming oil cylinder and difference value of detection temperature obtained by the measured temperature sensor are calculated through the comparing unit, according to the difference value, the measured temperature sensor is judged whether is right, accuracy of detection is improved, simultaneously, detection information outputted by the comparing unit can be visually displayed through a liquid crystal display, is conducted printing through a printer, and is sent to a remote computer through internet, and detection efficiency is improved.

Description

Technical field [0001] The invention relates to the technical field of sensor detection, in particular to a temperature sensor detection device. Background technique [0002] With the rapid development of my country's economic construction, coal and other industries continue to develop in the direction of mechanization and automation, and various special vehicles for coal mines are widely used in various coal mining constructions. The explosion-proof diesel engine is a widely used supporting power. Because there are a lot of explosive gases in the special production environment of coal mine tunnels, when the heat generated by the diesel engine exceeds the specified value, causing the temperature to rise and exceed the ignition point of the above explosive gases, it will cause catastrophic consequences such as explosions in the coal mine Therefore, it is necessary to effectively detect the exhaust temperature, cooling water temperature and surface temperature of the diesel engine...

AI Technical Summary

Problems solved by technology

But above-mentioned method has following deficiency: one, the error rate of artificial detection is high

When heating the oil cylinder, the temperature difference between the upper layer and the lower layer of the oil in the oil cylinder is generally 20 to 50 degrees Celsius, and as the heating progresses, the oil temperature changes greatly, so the temperature sensor cannot truly measure the oil temperature in the oil cylinder. Real temperature, so it is impossible to effectively detect the accuracy of the temperature sensor

2. Since the detection results are input to the temperature controller through thermocouples, the displayed and recorded results are unstable, the digital drift is large, and sensors with poor performance may be missed

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