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PCM (pulse code modulation) switch alarming device

An alarm device and switch technology, applied in the field of electrical communication, can solve problems such as inconvenient maintenance, and achieve the effects of easy detection and maintenance, fast response, and high sensitivity

Inactive Publication Date: 2017-12-12
山东航海电器设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of inconvenient maintenance of the existing PCM switch alarm device driven by a single-chip microcomputer program, the purpose of the present invention is to provide a PCM switch alarm device with high sensitivity, less components and parts, and easy maintenance

Method used

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  • PCM (pulse code modulation) switch alarming device
  • PCM (pulse code modulation) switch alarming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] exist figure 1 Among them, a PCM switch alarm device, including a receiving amplifier circuit 1, a comparison adjustment circuit 2 and a drive alarm circuit 3, the receiving amplifier circuit 1 receives the PCM switch signal and is controlled by the comparison adjustment circuit 2 using a double op amp after comparison and adjustment. The driving alarm circuit 3, because the analysis of the single-chip microcomputer is replaced by the analysis of the single-chip microcomputer to directly control the driving alarm circuit, the high sensitivity of the single-chip microcomputer is retained, and the response is fast, which is convenient for detection and maintenance;

[0018] like figure 2 As shown, the receiving amplifying circuit 1 receives the PCM signal through the voltage division of resistors R1 and R2 and filters the RC circuit composed of resistor R1 and capacitor C1. One end of R1-R3 and one end of capacitor C1, the other end of resistor R1 is connected to the si...

Embodiment 2

[0020] like figure 2 As shown, on the basis of Embodiment 1, the comparison and adjustment circuit 2 uses the common output terminals of the operational amplifiers AR2 and AR3, the capacitor C2 is connected to the non-inverting input terminals of the operational amplifiers AR2 and AR3, and the inverting input terminal of the operational amplifier AR2 passes through Resistor R4 receives the signal amplified by amplifier circuit 1, and the non-inverting input terminals of op amps AR2 and AR3 receive the signals after voltage division by resistors R5 and R6. Op amps AR2 and AR3 compare and output stable signals. If the signals are abnormal, compare and adjust the circuit The signal output by 2 can make the MOS tube Q1 conduct, and then the relay K1 is energized, and the alarm LS1 works and alarms. If the signal is abnormal, the signal output by the comparison adjustment circuit 2 will not make the MOS tube Q1 conduct, and the alarm LS1 will not work. ; The inverting input termin...

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PUM

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Abstract

The invention discloses a PCM (pulse code modulation) switch alarming device which solves the problem that the existing PCM switch alarming device is inconvenient to maintain by adopting a singlechip microcomputer program. The PCM switch alarming device comprises a receiving and amplification circuit, a comparative adjustment circuit and a driving alarming circuit, wherein a PCM switch signal of the receiving and amplification circuit is comparatively adjusted into a driving signal by two operational amplifiers through the comparative adjustment circuit to control the driving alarming circuit. The comparative adjustment of the two operational amplifiers replaces analysis of a singlechip microcomputer to directly control the driving alarming circuit, so that high sensitivity and relatively fast response of the singlechip microcomputer are retained; a small number of elements are adopted, so that detection and maintenance are facilitated.

Description

technical field [0001] The invention relates to electric communication technology, in particular to a PCM switch alarm device. Background technique [0002] PCM is pulse code modulation, which is a digital signal generated by sampling, quantizing and encoding a continuously changing analog signal. The application of the PCM switch has been widely promoted. The PCM switch alarm device is now using a single-chip microcomputer to detect signals and analyze the alarm, which has high sensitivity. failure, inconvenient maintenance. Contents of the invention [0003] In order to overcome the shortcomings of inconvenient maintenance of the existing PCM switch alarm device driven by a single-chip microcomputer program, the purpose of the present invention is to provide a PCM switch alarm device with high sensitivity, less components and parts, and easy maintenance. [0004] The technical solution adopted by the present invention to solve its technical problems is: a PCM switch al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B23/00H03F1/34H03K17/51
CPCH03F1/34H03K17/51G08B23/00H03K2017/515
Inventor 苑芳宋大卫
Owner 山东航海电器设备有限公司
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