Mine-used multi-standard sensor signal transmission circuit
A sensor signal and transmission circuit technology, which is applied in the field of multi-standard sensor signal transmission circuits for mines and mine sensor transmission circuits, can solve the problems of complex construction, rising costs, inconvenient maintenance and technical transformation, and reduce engineering costs. Cost, the circuit is simple and reliable, and the effect of improving the application range
Active Publication Date: 2017-01-04
镇江中煤电子有限公司
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Problems solved by technology
In this case, a security monitoring system needs to be equipped with multiple transmission circuits according to different sensors, resulting in complex construction, increased cost, and inconvenient maintenance and technical transformation.
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[0014] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0015] Such as figure 1 As shown, the existing sensor signal transmission system generally is that the sensor 1 transmits the signal to the single-chip microcomputer 2, and the single-chip microcomputer 2 performs signal amplification, linear transformation, zero calibration and other processing of the sensor signal, and then provides the transmission circuit 3 and transmits it to the substation 4. Since the communication between the sensor and the substation has various forms such as pulse frequency, digital, current and voltage, a circuit that can transmit multiple signals is needed to increase the application range of sensor products and reduce engineering costs.
[0016] Such as figure 2 As shown, the multi-standard sensor signal transmission circuit for mining of the present invention includes resistor R1, resistor R2, resistor R3, resistor R4, resistor R5...
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The invention discloses a mining multi-mode sensor signal transmission circuit which comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor RL, a capacitor C1, a capacitor C2, a diode D1, an operational amplifier U1 and a triode BG1, wherein the triode BG1 is a PNP type triode. According to the mining multi-mode sensor signal transmission circuit, multi-mode output of pulse, digital and current / voltage signals is realized through the matching of a circuit and a single-chip microcomputer, so that a multi-mode general function can be realized. When in a pulse or digital output manner, a constant current output manner is used for avoiding the circuit length change from influencing the signal quality. The current output manner is simulating PWM output via a single-chip microcomputer I / O port, so that the circuit is concise and reliable, the application range is improved and the engineering cost is reduced.
Description
Technical field [0001] The invention relates to a mine-used sensor transmission circuit, in particular to a mine-used multi-standard sensor signal transmission circuit, and belongs to the technical field of coal mine equipment. Background technique [0002] At present, there are many manufacturers of safety monitoring system in China. Various sensors used to monitor the environment of coal mines are generally transported to substations after signal amplification, linear transformation, and zero calibration are processed by the single-chip system. There are many ways of communication between sensors and substations, including the following: 1) pulse frequency method; 2) digital method; 3) current and voltage method. This requires the use of different transmission circuits for sensor signals of different communication methods to adapt the transmission signals to the safety monitoring system substation. In this case, a safety monitoring system needs to be equipped with multiple tra...
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IPC IPC(8): G01D5/16G01D5/244
Inventor 贾柏青郭凤斌
Owner 镇江中煤电子有限公司