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A new type of circuit board for mine safety barrier

A technology of safety barriers and circuit boards, which is applied to output power conversion devices, instruments, regulating electrical variables, etc., can solve the problem of mining safety barriers receiving voltage, narrow current range, inability to dispatch switching equipment compatibility, and reduce costs for enterprises and users. and other problems, to achieve the effect of wide current range, easy installation and strong compatibility

Active Publication Date: 2016-08-24
HENAN HENGAN COMM EQUIP
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new type of circuit board for mine safety barriers, which solves the problem that the existing mine safety barriers receive a narrow range of voltage and current and cannot be compatible with various types of dispatching and switching equipment on the market; Change the design from the usual single-way safety barrier to 4-way or multi-way safety barrier, reducing the cost of enterprises and users

Method used

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  • A new type of circuit board for mine safety barrier

Examples

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Embodiment Construction

[0012] When the mine safety barrier passes DC voltage and DC current, the standard telephone DC voltage and current signals are converted and coupled into DC voltage and DC current signals that meet coal mine safety requirements through the basic circuit part of the safety barrier. (if attached figure 1 )

[0013] In the IN-B port where the DC signal is input, the DC voltage and DC current are first connected to the anode of the diode V15, the emitter of the transistor V32 and the terminal 1 of the resistor R14, and the cathode of the diode V15 is connected to the collector of the transistor V32 and the resistor R13. Terminal 1, the base of the transistor V32 is connected to the terminal 2 of the resistor R14 and the cathode of the diode V16, the emitter of the transistor V31 and the terminal 1 of the resistor R15. The two ends of the resistor R13 are connected to the cathode of the diode V18 and the collector of the triode V29, the emitter of the triode V29 is connected to t...

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Abstract

Disclosed is a novel circuit board for a mine guard grating. The problems that an existing mine guard grating is narrow in receiving voltage and current range, and cannot be compatible with dispatching switching devices of multiple models on the market are solved. The guard grating which is normally designed into one way is changed into four or more ways, so that the cost of enterprises and users is reduced.

Description

technical field [0001] The invention relates to a safety barrier for mines, in particular to a circuit board for a new type of safety barrier for mines, which converts non-intrinsically safe voice signals into intrinsically safe voice signals and outputs them to underground mines. Background technique [0002] All the mine safety barriers on the market can convert non-intrinsically safe signals into intrinsically safe signals. The voltage and current are not exactly the same. The range of voltage and current that the traditional mining safety barrier can receive is narrow, which leads to incompatibility between different brands and models of mining safety barriers and dispatching switching equipment, resulting in communication failures. Terminal equipment (such as mining telephones) does not ring and cannot be off-hooked. [0003] At the same time, the mining safety barriers on the market are designed with a single-way structure, which is inconvenient for installation and m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156
Inventor 李永强王颖辛全国郑亚培
Owner HENAN HENGAN COMM EQUIP
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