Multipath signal acquisition circuit of mine truck protection device

Abstract

The invention discloses a mine truck protection device multipath signal acquisition circuit, which comprises a plurality of signal acquisition circuit branches and at least one integrated operational amplifier chip SOIC-14, the integrated operational amplifier chip SOIC-14 is provided with an in-phase input end IN + X, an inverted input end IN-X, a voltage signal output end OUTX, a VCC end and a GND end, X is 1, 2, 3 and 4, and the GND end is connected with the in-phase input end IN + X, the inverted input end IN-X, the voltage signal output end OUTX, the VCC end and the GND end. The system is characterized in that the signal acquisition circuit branch is connected with the same in-phase input end IN + X, the inverted input end IN-X and the voltage signal output end OUTX of the integrated operational amplifier chip SOIC-14, the in-phase input end IN + X receives a sensor input signal through an isolation resistor, the inverted input end IN-X is grounded through the isolation resistor, and the voltage signal output end OUTX is grounded through the isolation resistor. The voltage signal output end OUTX transmits a driving signal to the MCU through an isolation resistor, and the VCC end is grounded through a capacitor and is connected with a power supply signal through a resistor; and the GND end is grounded.

Description

technical field [0001] The invention relates to the electronic technical field of mining vehicles, in particular to a multi-channel signal acquisition circuit of a protection device for mining vehicles. Background technique [0002] Mining vehicles are non-highway vehicles, mainly used in mines, and need to meet the needs of mine construction operations. Therefore, the entire vehicle and parts used for mining vehicles have taken into account the mine operating environment. [0003] The mining vehicle protection device is a diesel engine protection device customized and developed for mining vehicle manufacturers. It is mainly in response to the requirements mentioned in 6.13 automatic protection (automatic monitoring) device of "The People's Republic of China Coal Industry Standard MT / T989-2019-General Technical Conditions for Explosion-proof Diesel Engine Trackless Transport Vehicles for Coal Mine" issued by the Ministry of Emergency Management of the People's Republic of Ch...

AI Technical Summary

Problems solved by technology

[0006] However, most of the signal acquisition methods commonly used by existing mining vehicles are directly displayed by signal lights.

This method is simple and low in cost, but it can only display switching signals, and due to the influence of the on-site use environment, there are many signal lamp failures, which require frequent maintenance and replacement

At the same time, due to the large vibration of mining vehicles, poor working environment, many on-board electromechanical control systems, and complex electromagnetic environment, the conventional analog signal acquisition system is easily affected by the on-site electromagnetic environment and has weak anti-interference ability, so it is not suitable for mining. Signal collection by car

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