Engine oil cutoff detection switch and temperature detection integrated device

Abstract

The invention relates to an engine oil cutoff detection switch and temperature detection integrated device. The engine oil cutoff detection switch and temperature detection integrated device comprisesa sensor base and a sensor mounting column. An upper probe and a lower probe are rotatably mounted on the sensor mounting column correspondingly. Connecting wires of the upper and lower probes are connected with an external control circuit. Two PCBs are mounted in the upper probe. A thermistor R2 and a heating resistor R3are mounted on one PCB. A thermistor R1 is mounted on the other PCB. A pt100is mounted in the lower probe. On the external control circuit, an electrical bridge is connected with the input end of a differential amplifier through a 15v power module. The output end of the differential amplifier is connected with a relay through an analog-digital conversion module and a signal amplifier. The relay is used for controlling the working state of a single-pole double-throw switch on the external control circuit. The engine oil cutoff detection switch and temperature detection integrated device has the advantages of being rapid in output response, small in output fluctuation,accurate in action and high in reliability and brings great convenience to a user during installation and application.

Description

technical field [0001] The invention belongs to an electromechanical integrated monitoring device and a control system. In particular, it provides an integrated device for engine oil cut-off detection switch and temperature detection. Background technique [0002] Traditional cut-off detection switches include baffle-type flow switches and plug-in flow switches, which are also called mechanical flow switches. [0003] The baffle type flow switch is used to detect the flowing air and liquid, and there should be no entanglement debris in the liquid. When the fluid flows through the pipeline, the baffle deflects, and by adjusting the adjustment bolt, the single-pole double-throw micro switch operates at the set flow rate and outputs the switch signal. The baffle type flow switch is divided into a mechanical part and an electronic part. The mechanical part is installed in the middle of the fluid pipeline, which is bulky, complicated to install, and time-consuming. [0004] Th...

AI Technical Summary

Problems solved by technology

[0007] The general thermal flow detection switch works well for the detection of fluid flow at a constant temperature, but for the detection of fluid flow with temperature changes, it has disadvantages such as slow response speed, output fluctuations, and malfunctions.

The temperature of ship engine oil changes greatly, the temperature is low when it is just started, and the temperature is high and fluctuates occasionally after stable operation, so the current thermal flow detection switch is difficult to apply to engine oil flow detection

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