CN2723997Y - Portable methane detection alarm with magnetic control regulating - Google Patents
Portable methane detection alarm with magnetic control regulating Download PDFInfo
- Publication number
- CN2723997Y CN2723997Y CN 03279749 CN03279749U CN2723997Y CN 2723997 Y CN2723997 Y CN 2723997Y CN 03279749 CN03279749 CN 03279749 CN 03279749 U CN03279749 U CN 03279749U CN 2723997 Y CN2723997 Y CN 2723997Y
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- alarm
- circuit
- switch
- debug
- magnetic control
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Disclosed is a portable methane concentration detection alarm with magnetic control regulating. A magnetic control switch is provided in the regulating circuit of the alarm, and the magnetic control switch is at the off-state at ordinary times, and the regulating circuit is cut off, and the zero point and the alarm point cannot be changed by pressing the button on the panel of the alarm. When the adjustment of the zero point and the calibration of the alarm point are required, the alarm is put into a regulating box, and the magnetic control switch can be switched on, and the zero point can be regulated, and the alarm point can be calibrated. The regulation and calibration of the alarm are simple and convenient, and cannot be changed randomly by non-regulating and delibrating personnel in use. Accordingly, the accuracy, reliability and safety of the alarm are guaranteed.
Description
One, technical field
The utility model relates to the instrument that a kind of down-hole inflammable gas concentration detects and reports to the police, and especially relates to detection and warning to the very large gas density of down-hole harmfulness.
Two, background technology
The portable gas explosion Alarm Detector, before producer dispatches from the factory and after using a period of time, need measurement sensitivity and alarm set point are debugged and calibrated, at present on the market the sensitivity of employed gas alarming detecting device and alarm set point debugging, Calibration Method are mainly contained following two kinds, a kind of is to have an aperture on the shell of alarm, stretch in the hole with objects such as small screw drivers during debugging, adjust potentiometer resistance, to reach the purpose to alarm set point debugging and calibration, another kind is directly to debug by the button on the panel.All there is deficiency in above-mentioned two kinds of calibration stepss, and the first method operation is very inconvenient, and the poor sensitivity of regulating.It is too strong that second method is adjusted randomness, and underground operators is had a mind to or is easy to touch adjusting key on the panel unintentionally, and regular meeting makes value and warning point value change at zero point, causes false alarm or do not report to the police.It is one of great potential safety hazard in down-hole.
Three, utility model content
The purpose of this utility model is exactly in order to overcome above-mentioned deficiency of the prior art, makes that the calibration of methane detection alarm device was both simple and convenient, and non-adjustment personnel (underground operators) in use can not arbitrarily change again.Accuracy, reliability, the security of alarm have been guaranteed.
Solving technical matters of the present utility model is to adopt following technical scheme to realize, a kind of flammable gas-detecting alarm device, comprise: Sensor section, the warning part, the display part, power unit, the voltage stabilizing part, the debugging part, the debugging part comprises the zeroing button, transfer the precision button, transfer the alarm set point button, it is characterized in that: the debugging part also comprises a debug switch, when this debug switch is in off-state, alarm is in normal testing state, arbitrarily press the button on the alarm panel, can not change the zero point and the alarm set point of alarm, when switch was in closure state, alarm was in debugging mode.
Method by a kind of " magnetic control debugging ", debug switch is selected magnetic switch, switch is in open mode under the normal operating conditions, debug circuit disconnects, when need return to zero or calibrate, alarm is put into magnetic debugging box, the magnetic switch closure in the debug circuit, the staff can carry out debugging at zero point and alarm set point calibration.
Debugging box of the present utility model can be any magnetic material.Also can adopt common toggle switch or keyswitch to replace magnetic switch, connect debug circuit when switch pushes position ON, when switch pushes position OFF, disconnect debug circuit.
Four, description of drawings
Fig. 1 is the functional-block diagram of the utility model methane detection alarm device
Fig. 2 is the debug circuit theory diagram of prior art methane detection alarm device
Fig. 3 is the debug circuit theory diagram of the utility model methane detection alarm device
Five, embodiment
Introduce preferred implementation of the present utility model below in conjunction with accompanying drawing; Fig. 1 is a theory diagram of the present utility model, and methane detection alarm device comprises following a few part: holding circuit 1, sensor 2, operational amplifier 3, microprocessor 4, display 5, electric battery 6, mu balanced circuit 7, warning circuit 8, charging control circuit 9, debug circuit 10.
Sensor to electric signal deliver to microprocessor 4 through operational amplifier, deliver to display 5 after treatment, indicate corresponding methane concentration; when concentration meets or exceeds the alarm set point of setting; warning circuit 8 work are sent sound and light alarm, when voltage drops to certain value; holding circuit 1 work; cut off sensor and display power supply, when methane concentration 〉=+during 4.00%CH4 protection value, holding circuit work; cut off probe power, the catalysis element in the protection Sensor section.After 1 minute; power to sensor by microprocessor control; sensor enters duty, detects methane concentration, when methane concentration has been lower than the warning point value; alarm enters normal detected state; if methane concentration is still greater than the warning point value, processor is sent alerting signal again, and warning circuit sends sound and light alarm; holding circuit is cut off probe power once more, the protection catalysis element.
U1 is an operational amplifier among Fig. 2, Fig. 3, and U2 is a chip microprocessor, and U3 is the catalysis element in the sensor, and PB1 is a zero-setting button, and PB2 is for transferring the precision button, and PB3 is for transferring the alarm set point button, and K1 is a debug switch.
Alarm is first use before and use a period of time after, need regularly carry out debugging at zero point and alarm set point and calibrate, if the alarm set point of alarm is inaccurate, will produces false alarm or do not report to the police, cause major safety risks.For safety and convenient debugging, the utility model inserts debug switch K1 in debug circuit, and this debug switch is a magnetic switch, and alarm is under the normal operating conditions, and debug switch K1 disconnects, trigger button PB1, PB2, PB3, and debug circuit is not worked.When needs carry out debugging at zero point and alarm set point calibration, alarm is put into the debugging box, this debugging box also can be the magnetic material of an arbitrary shape.Because the magnetic material of debugging on the box, makes switch closure to the effect of magnetic switch in the debug circuit, debug circuit enters duty, press the zero-setting button PB1 on the alarm, can carry out zero point to alarm and debug.The debugging of warning precision, press PB1, show on the display " 000 " at this moment to feed gas (1.00 ± 0.1%CH4, flow 100ml/min), if show with nominal value " 100 " not to be inconsistent, the accent precision button on the scalable panel, up to displayed value with till the gas nominal value of feeding conforms to, feeding is equivalent to the methane gas of alarm set point concentration, regulate alarm set point button PB3, make warning circuit work, send sound and light alarm.Debugging finishes, and alarm is taken out in the debugging box, and the magnetic switch in the debug circuit disconnects, and alarm enters normal detected state, arbitrarily presses the button on the alarm panel again, and the alarm set point of zero point and calibration all can not change.Guaranteed the operation that alarm is safe and reliable, reported to the police like clockwork.
The foregoing description is an exemplary illustration, does not limit the utility model, on the basis that those skilled in the art can understand, can do various variations, and for example, alarm can detect other inflammable gas beyond the methane; The debugging box can be the magnetic material of arbitrary shape; Above-mentioned debug switch also can be common toggle switch or keyswitch, switch places position " ON ", debug circuit enters debugging mode, can carry out debugging at zero point and alarm set point debugging, the position of the switch places " OFF ", debug circuit disconnects, and zeroing key and aligning key on the alarm panel no longer work, and arbitrarily press can not change zero point and alarm set point.
Claims (4)
1, a kind of flammable gas-detecting alarm device; sensor is connected to microprocessor by operational amplifier; holding circuit connects catalysis element holding circuit and mu balanced circuit; catalysis element holding circuit, mu balanced circuit, warning circuit, debug circuit and display are connected the microprocessor port; microprocessor connects electric battery by charging control circuit, it is characterized in that: comprise also in the debug circuit that a debug switch is connected the port of microprocessor.
2, flammable gas-detecting alarm device as claimed in claim 1 is characterized in that: described inflammable gas is a methane.
3, flammable gas-detecting alarm device as claimed in claim 1 or 2 is characterized in that: described debug switch is a magnetic switch.
4, flammable gas-detecting alarm device as claimed in claim 1 or 2 is characterized in that: described debug switch is a toggle switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03279749 CN2723997Y (en) | 2003-09-18 | 2003-09-18 | Portable methane detection alarm with magnetic control regulating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03279749 CN2723997Y (en) | 2003-09-18 | 2003-09-18 | Portable methane detection alarm with magnetic control regulating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2723997Y true CN2723997Y (en) | 2005-09-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03279749 Expired - Lifetime CN2723997Y (en) | 2003-09-18 | 2003-09-18 | Portable methane detection alarm with magnetic control regulating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2723997Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252171A (en) * | 2011-04-20 | 2011-11-23 | 惠州市马可尼电子有限公司 | Harmful gas alarm mining lamp with alarm points set in non-contact way and setting method thereof |
| CN103529090A (en) * | 2013-10-24 | 2014-01-22 | 沈阳添瀛通用设备有限公司 | Portable methane detection alarm |
| CN105275353A (en) * | 2015-11-14 | 2016-01-27 | 兴化市成顺消防科技研究院有限公司 | Household multi-control fire-fighting door |
| CN105528864A (en) * | 2015-12-27 | 2016-04-27 | 哈尔滨佳云科技有限公司 | Intelligent gas alarm and alarm debugging method |
| CN105738573A (en) * | 2016-02-27 | 2016-07-06 | 乐清市启铭电气有限公司 | Portable gas alarming device and debugging method |
| CN106558198A (en) * | 2015-09-29 | 2017-04-05 | 哈尔滨东方报警设备开发有限公司 | A kind of audible-visual annunciator with battery protection function |
| CN107545708A (en) * | 2017-10-27 | 2018-01-05 | 苏州工业职业技术学院 | Gas leak supervising device |
-
2003
- 2003-09-18 CN CN 03279749 patent/CN2723997Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252171A (en) * | 2011-04-20 | 2011-11-23 | 惠州市马可尼电子有限公司 | Harmful gas alarm mining lamp with alarm points set in non-contact way and setting method thereof |
| CN102252171B (en) * | 2011-04-20 | 2013-03-27 | 惠州市马可尼电子有限公司 | Harmful gas alarm mining lamp with alarm points set in non-contact way and setting method thereof |
| CN103529090A (en) * | 2013-10-24 | 2014-01-22 | 沈阳添瀛通用设备有限公司 | Portable methane detection alarm |
| CN106558198A (en) * | 2015-09-29 | 2017-04-05 | 哈尔滨东方报警设备开发有限公司 | A kind of audible-visual annunciator with battery protection function |
| CN105275353A (en) * | 2015-11-14 | 2016-01-27 | 兴化市成顺消防科技研究院有限公司 | Household multi-control fire-fighting door |
| CN105528864A (en) * | 2015-12-27 | 2016-04-27 | 哈尔滨佳云科技有限公司 | Intelligent gas alarm and alarm debugging method |
| CN105738573A (en) * | 2016-02-27 | 2016-07-06 | 乐清市启铭电气有限公司 | Portable gas alarming device and debugging method |
| CN105738573B (en) * | 2016-02-27 | 2017-11-28 | 乐清市启铭电气有限公司 | A kind of portable gas alarm and adjusting process |
| CN107545708A (en) * | 2017-10-27 | 2018-01-05 | 苏州工业职业技术学院 | Gas leak supervising device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130918 Granted publication date: 20050907 |
|
| DD01 | Delivery of document by public notice |
Addressee: Du Jianguo Document name: Notification of Expiration of Patent Right Duration |