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Portable gas monitoring equipment with illuminating function

A gas and portable technology, applied in the field of portable gas detectors, can solve the problems of impact resistance, weak tensile performance, low alarm accuracy, poor anti-interference ability, etc., to improve impact resistance, overcome limitations, and prevent interference Effect

Inactive Publication Date: 2008-04-23
刘宏儒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of instrument is easy to carry, it has poor anti-interference ability and low alarm accuracy when working in the mine; it uses a common power supply, which is large in size, heavy in weight, and poor in safety; the overall impact resistance and tensile resistance of the instrument are weak

Method used

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  • Portable gas monitoring equipment with illuminating function
  • Portable gas monitoring equipment with illuminating function
  • Portable gas monitoring equipment with illuminating function

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail: in the graded warning circuit board 5 of embodiment, voltage converter 17 is by integrated circuit U 3 , Transistor T 4 , Diode D 2 and D 3 , capacitance C 1 、C 3 、C 4 、C 6 The voltage boosting circuit formed with resistor R supplies power for the alarm output circuit. The infrared receiving circuit 18 is made up of a REDRE infrared receiving head and a capacitor C. u 2 The single-chip microcomputer chip contains a 10-bit A / D converter. The voltage stabilizing circuit 20 consists of an integrated circuit U 1A , Transistor T 1 , T 2 , Diode D 1 and resistor R 1 , R 2 , R 3 A series linear voltage regulator circuit is formed to provide a stable voltage to the methane sensor circuit. Methane sensor circuit 21 is composed of catalytic element J 3 with resistor R 20 , R 12 , R 14 Wheatstone bridge formed; signal amplifier 22 is composed of o...

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PUM

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Abstract

An alarm annuciator with lighting function consists of alarm including transducer, stepped alarm circuit, display, infrared connector and horn; metal instrument box for holding alarm and lithium battery as its panel with air vent, indicator, infrared connector, hole of alarm sound, its back with jack catch, its top with cable interface. The stepped alarm circuit is composed of power interface, fuse tube, transformer, infrared receiving circuit, monolithic computer, stabilized voltage circuit, methane sensor circuit, amplifier, display driving and alarm output circuit.

Description

technical field [0001] The invention belongs to measuring and detecting instruments, and in particular relates to a technical proposal of a portable gas measuring and reporting instrument. Background technique [0002] The gas alarm instrument is a commonly used instrument for detecting underground gas-methane content in coal mines. It is generally a combined headlamp type placed on a miner's lamp. Although this type of instrument is easy to carry, it has poor anti-interference ability and low alarm accuracy when working in mines; it uses a common power supply, which is large in size, heavy in weight, and poor in safety; the overall impact resistance and tensile resistance of the instrument are weak. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and propose a technical proposal of a gas detector with strong anti-interference ability, multi-level alarm, compact volume and good durability. [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/00G01N21/00E21F17/18G08B21/12
Inventor 刘宏儒李卫群韩志刚
Owner 刘宏儒
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