CN2102546U - Automatic monitoring alarm mine lamp of gas - Google Patents

Automatic monitoring alarm mine lamp of gas Download PDF

Info

Publication number
CN2102546U
CN2102546U CN 91212970 CN91212970U CN2102546U CN 2102546 U CN2102546 U CN 2102546U CN 91212970 CN91212970 CN 91212970 CN 91212970 U CN91212970 U CN 91212970U CN 2102546 U CN2102546 U CN 2102546U
Authority
CN
China
Prior art keywords
circuit
bulb
automatic monitoring
gas
monitoring alarm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN 91212970
Other languages
Chinese (zh)
Inventor
李恩忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 91212970 priority Critical patent/CN2102546U/en
Publication of CN2102546U publication Critical patent/CN2102546U/en
Withdrawn legal-status Critical Current

Links

Images

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The utility model relates to an automatic monitoring alarm mine lamp of gas, which is composed of a power supply, a lamp cap, a power cord and a gas automatic monitoring alarm device, and the lamp cap combines the function of an alarm signal lamp and can flash to alarm. The circuit of the gas automatic monitoring alarm device is composed of a voltage stabilizer, a timing sampling switching circuit, a gas sensor, a gas-electricity signal switching circuit and a lamp bulb control circuit; the lines of the utility model is provided with an overheat fuse, an automatic cut-off device and a switch; In normal condition, the utility model conducts timing sampling monitoring, and when the gas concentration exceeds a limited value, the utility model conducts successive sampling and continuous alarm. The utility model is power saving and can meet the requirements of continuity, consistency and reliability of monitoring alarm, and the utility model is convenient in use.

Description

Automatic monitoring alarm mine lamp of gas
The utility model relates to the mine mine lamp.
Mine adopts fixed or portable " gas monitor " at present, as AJ-85,85B type etc.This quasi-instrument needs special messenger's operation, fixed point or the touring monitoring, alarming that carries out.Its shortcoming is that the monitoring coverage is narrow, maneuverability is relatively poor, anti-H 2S poisons and anti-CH 4The high concentration ability is not suitable at H 2S content and CH4 concentration surpass the occasion of permissible value to be used, and reliability is relatively poor.
The purpose of this utility model provides a kind of gas automatic monitoring warning mine lamp of good reliability.This mine lamp can carry out periodic monitor to gas density automatically when normal illumination, realize automatic, continuous alarm when meeting or exceeding the limiting concentration value.
The technical solution of the utility model is as follows:
Fig. 1 is an outside drawing, and Fig. 2 is the schematic block circuit diagram of the automatic monitoring alarm in the utility model, and Fig. 3 is the circuit theory diagrams of embodiment.
The utility model improves on the basis of existing mine lamp, comprises power supply (1), lamp holder (2) and power line (3), and bulb (4) is arranged on the lamp holder, and power line is communicated with bulb and power supply, auto-power-off device (5) and switch is arranged, referring to Fig. 2 on the power circuit. Improved plan is to set up gas automatic monitoring warning device (6), and lighting bulb (4) doubles as warning light, and the bulb flash of light is for alarm condition, referring to Fig. 1.
The circuit of described gas automatic monitoring warning device (6) is made up of voltage-stablizer (7), timing sampling on-off circuit (8), firedamp sensor (9), pneumatic-electric signal change-over circuit (10), bulb control circuit (11), circuit is provided with excess temperature fuse (12), and each sideline mode is seen Fig. 2. Operation principle is: voltage-stablizer is realized the circuit voltage stabilizing; The timing sampling switch is regularly monitored firedamp sensor according to the time realization of demarcating and is reached in gas density To or the automatic control of continuous sampling when surpassing limit value, continuous output signal; Firedamp sensor timing sampling and output " gas " signal, " gas " signal that the pneumatic-electric signal change-over circuit is imported firedamp sensor is converted to " electricity " signal and compares, signal input bulb control circuit relatively, the bulb control circuit is according to the signal after relatively, normal illumination and the flashing light alarm of control bulb. Under the normal condition, the bulb illumination, the bulb control circuit can suppress bulb cold conditions energising transient high-current, save battery power, the service life of prolongation bulb, battery; When signal that pneumatic-electric signal change-over circuit input needs to report to the police, then control the bulb group flashing light and report to the police. Until the operating personnel withdraws scene or methane gas content place limit value stop alarm when following. Overheat protector during excess temperature fuse realization work is to improve reliability. The utility model adopts timing sampling, than the continuous sampling ratio, and when gas density place limit value is following, but conserve battery power.
The circuit of gas automatic monitoring alarm further specifies as follows, referring to Fig. 3.
Timing sampling on-off circuit (8) is by timing square-wave generator (13).On-off circuit (14), sensor heating electrode voltage stabilizer (15) and lock-in circuit (16) are formed.Regularly square-wave generator is by the nominal time timing square wave of the high and low level time constant of output automatically, and on-off circuit is subjected to regularly the control of square wave and time opening and cutting out, and regularly samples with the control firedamp sensor; Sensor heating electrode voltage stabilizer keeps the voltage on the sensor electrode (e-g) not change with cell voltage; Lock-in circuit input termination pneumatic-electric signal change-over circuit output terminal, its output terminal gauge tap circuit, the control firedamp sensor transfers continuous sampling to by timing sampling, continuously output super concentration " gas " signal, make it continuous alarm, to guarantee the continuity and the reliability of monitoring, alarming.
Pneumatic-electric signal change-over circuit (10) is made up of conversion electric bridge (17), trigger (18) and signal comparator (19).The conversion electric bridge is realized " pneumoelectric " conversion of signals, and output terminal connects trigger, trigger output termination signal comparator, trigger triggers electric signal, this signal through comparer relatively after and export low or high level signal.The output terminal of signal comparator is a pneumatic-electric signal change-over circuit output terminal.
Bulb control circuit (11) is made up of square-wave generator (20) and inhibition on-off circuit (21).Square-wave generator produces the square wave of corresponding signal according to the low or high level signal of pneumatic-electric signal change-over circuit input, and modulation suppresses the duty of on-off circuit, makes normal illumination of bulb place or alarm condition.Square-wave generator input termination pneumatic-electric signal change-over circuit, the output termination suppresses on-off circuit.
Embodiment.The profile of embodiment is seen Fig. 1, and gas automatic monitoring alarm (6) is loaded on the lamp holder (2), is connected with lamp holder (2) by box body (22), transom window (23) is arranged on the box body, line box (24) is loaded in the box body, blocks with line box fixture block (25), and fixture block is loaded in the lamp holder hook (26);
The circuit theory diagrams of gas automatic monitoring alarm are seen Fig. 3.
Voltage stabilizer (7) is by current-limiting resistance R 1, dividing potential drop adjusts resistance R 2, R 3And IC 1Form, have temperature self-compensation, voltage stabilizing precision, adjustable function, when cell voltage when 4.6 volts are reduced to 3.5 volts, export elevation and decide voltage, for assurance monitoring accuracy and consistance provide condition.
Timing square-wave generator (13) in the timing sampling on-off circuit (8) is by C 1, R 4, R 5, R 6, R 7Four computing IC with low-power consumption, single electricity fortune, low voltage operating 2-A forms, and exportable high and low level time constant respectively is the timing square wave of 90 seconds (± 5 seconds); On-off circuit (14) is by T 1, T 2With current-limiting resistance R 8, R 11, pull-up resistor R 9Form, controlled by square-wave signal, the open and close time of this on-off circuit respectively is 90 seconds, the control firedamp sensor in 8 hour working time to CH 4Gas sampling 160 times; Sensor heating electrode voltage stabilizer (15) is by R 12, R 13, R 14The accurate adjustable IC with having temperature self-compensation, voltage stabilizing 3Form, be subjected to T 2Control works in the open and close state, and its open and close are promptly controlled the beginning of firedamp sensor sampling and stopped; Lock-in circuit (16) is by IC 2-B, T 3With current-limiting resistance R 10, R 15Form, come the continuous opening in locking switch circuit place according to alerting signal.
Firedamp sensor (9) is a NEW TYPE OF COMPOSITE oxide polycrystalline powder sintered type gas sensor special, to HC 4Gas-sensitive, antijamming capability is strong, anti-H 2S poisons and high concentration HC 4Ability is strong.
Conversion electric bridge (17) in the pneumatic-electric signal change-over circuit (10) is by the equivalent resistance Rf-g and the R of firedamp sensor signal electrode 16, R 17, R 18, R 19, W 1Form,, get R for the Hui Sideng electric bridge 16+ R 17=Rf-g, R 18=R 19The time, potentiometer W 1Be used for HC 4Percent concentration alarm limit definite value is adjusted, and double as warning fine setting, and present embodiment is to HC 4Content is that 0.5%～2.5% warning precision is ± 0.1; Trigger (18) is by IC 2-C and feedback resistance R 20Form trigger output terminal and electric bridge one arm R 16, R 17Connect between the some R is set 20, can improve monitoring sensitivity, precision consistance and warning reliability; Signal comparator (19) is by T 4With current-limiting resistance R 21, pull-up resistor R 22Form, the signal after the triggering is then exported low or high level signal (4d) through relatively.
Square-wave generator (20) in the bulb control circuit (11) is by IC 2-D, C 2R 23, R 24, R 25, R 26Form.The level signal 4d that square-wave generator receives front end circuit output does not work when 4d is low level, and during for high level, output frequency is 3 ± 0.5Hz square wave; Suppress on-off circuit (21) by T 5With grid-bias resistance R 27, R 28, coupling capacitance C 3Form present embodiment T 5Be nmos type fet power pipe, also available other bipolar power transistors replace, and the automatic current limiting ability is arranged, and it is minimum to promote power, and when conducting resistance was very little, the pipe consumption was minimum, energy-conservation, reliable.When 4d was low level, square-wave generator was not worked, and this suppresses the R in the on-off circuit 27Get the big resistance of negative temperature coefficient value, under the cold conditions and R 28Resistance close, T 5The grid bias-voltage is low, unsaturation, and the big electric current that flows through bulb is inhibited; Along with electric current flows through R 27, self-heating, resistance descends rapidly, and the grid bias-voltage rises rapidly, T 5Place's saturation conduction state, bulb (4) normal illumination; When 4d is high level, T 5Be subjected to IC 2The square wave control of-D output is operated in open/close state, bulb (4) flashing light alarm.
Comprehensive described, work as HC 4When concentration was lower than the alarm limit definite value, the Rf-g resistance was bigger, and conversion electric bridge output high level is kept 4a＞4d, and 4C keeps high level and makes T 4Conducting, 4d is a low level, IC 2-D does not work, T 5Do not modulated the bulb normal illumination; Simultaneously, IC 2-B anode is a low level, homophase follower output low level, T 3End, on-off circuit is not played locking action.Work as HC 4When concentration reached alarming value, the Rf-g resistance descended, and the high level of conversion electric bridge descends, and makes 4b＞4a, and the 4C output low level is passed through R 20Feedback is kept 4b＞4a, and 4C keeps low level, T 4End, 4d is a high level, when 4d is high level, and the one, make the IC in the lock-in circuit 2-B upset, output high level, T 3Conducting, T at this moment 2Be not subjected to T 1Switch control but conducting and locking continuously makes firedamp sensor transfer continuous sampling to by timing sampling; The 2nd, make IC 2-D output low frequency square wave and modulate T 5Work in open/close state, bulb becomes flash of light by illumination and reports to the police.Because firedamp sensor has been continuous sampling, IC 2-D exports square wave continuously, and then the bulb group flashing light is reported to the police.
IC among the embodiment 2-A to IC 2-D is the LM324 model, IC 1And IC 3Model is TL431N, T 5Be the BUZ-7 model, other main element models and parameter are by providing among Fig. 3.
The utility model is under normal circumstances taked the timing sampling monitoring, when gas density transfinites definite value, then transfers the continuous sampling monitoring to, reports to the police, and both can save energy, and can satisfy the monitoring, alarming requirement again, guarantees the continuity and the consistance of monitoring, alarming; Be provided with bulb cold conditions transient high-current and suppress circuit, both can save energy, can prolong the serviceable life of bulb, power supply simultaneously.It is accurate, reliable, easy to use that gas monitor is reported to the police.

Claims (7)

1, a kind of gas automatic monitoring warning mine lamp, comprise power supply [1], lamp holder [2], power lead [3], bulb [4] is arranged on the described lamp holder, power lead is communicated with bulb and power supply, auto-power-off device [5] and switch are arranged on the power circuit, it is characterized in that having gas automatic monitoring alarm [6], circuit one termination power of this device, another termination auto-power-off device [5] and bulb, bulb [4] double as warning light, described gas automatic monitoring alarm [6] circuit is by voltage stabilizer [7], timing sampling on-off circuit [8], firedamp sensor [9], pneumatic-electric signal change-over circuit [10], bulb control circuit [11] is formed, excess temperature fuse [12] is arranged on the circuit, described timing sampling on-off circuit control firedamp sensor, the signal input pneumatic-electric signal change-over circuit that firedamp sensor is gathered, the output termination bulb control circuit of pneumatic-electric signal change-over circuit, and line is carried signal to the timing sampling on-off circuit, bulb control circuit output termination auto-power-off device [5] and bulb [4].
2, according to the described mine lamp of claim 1, it is characterized in that the gas automatic monitoring alarm on lamp holder (2), line box (24) is loaded in the box body (22), and transom window (23) is arranged on the box body (22), and wired box fixture block (25), fixture block is installed in the lamp holder hook (26).
3, according to the described mine lamp of claim 1, it is characterized in that:
A. the timing sampling on-off circuit (8) of gas automatic monitoring alarm is by timing square-wave generator (13), on-off circuit (14), sensor heating electrode voltage stabilizer (15) and lock-in circuit (16) are formed, regularly square-wave generator is exported the termination on-off circuit, on-off circuit connects sensor heating electrode voltage stabilizer, this voltage stabilizer connects firedamp sensor, lock-in circuit input termination pneumatic-electric signal change-over circuit output terminal, the output terminal gauge tap circuit (14) of lock-in circuit
B. the pneumatic-electric signal change-over circuit (10) of gas automatic monitoring alarm is made up of conversion electric bridge (17), trigger (18) and signal comparator (19), conversion electric bridge output terminal connects trigger, trigger output termination signal comparator, the signal comparator output terminal is the output terminal of pneumatic-electric signal change-over circuit (10), connect bulb control circuit (11), and connect lock-in circuit (16) input end of timing sampling on-off circuit (8)
C. the bulb control circuit (11) of gas automatic monitoring alarm is made up of square-wave generator (20), inhibition on-off circuit (21), square-wave generator input termination pneumatic-electric signal change-over circuit (10), the output termination suppresses on-off circuit, suppresses on-off circuit output termination auto-power-off device (5) and bulb (4).
4,, it is characterized in that voltage stabilizer (7) is by R according to the described mine lamp of claim 1 1, R 2, R 3And IC 1Form.
5,, it is characterized in that regularly square-wave generator (13) is by C according to the described mine lamp of claim 3 1, R 4, R 5, R 6, R 7And IC 2-A forms, and on-off circuit (14) is by T 1, T 2, R 8, R 11And R 9Form, sensor heating electrode voltage stabilizer (15) is by R 12, R 13, R 14And IC 3Form, lock-in circuit (16) is by IC 2-B, T 3, R 10And R 15Form.
6,, it is characterized in that changing equivalent resistance Rf-g and the R of electric bridge (17) by the firedamp sensor signal electrode according to the described mine lamp of claim 3 16, R 17, R 18, R 19, W 1Form, trigger (18) is by IC 2-C and R 20Form, signal comparator (19) is by T 4, R 21, R 22Form.
7,, it is characterized in that square-wave generator (20) is by IC according to the described mine lamp of claim 3 2-D, C 2, R 23, R 24, R 25And R 26Form, suppress on-off circuit (21) by T 5And R 27, R 28, C 3Form.
CN 91212970 1991-07-06 1991-07-06 Automatic monitoring alarm mine lamp of gas Withdrawn CN2102546U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 91212970 CN2102546U (en) 1991-07-06 1991-07-06 Automatic monitoring alarm mine lamp of gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 91212970 CN2102546U (en) 1991-07-06 1991-07-06 Automatic monitoring alarm mine lamp of gas

Publications (1)

Publication Number Publication Date
CN2102546U true CN2102546U (en) 1992-04-22

Family

ID=4921419

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 91212970 Withdrawn CN2102546U (en) 1991-07-06 1991-07-06 Automatic monitoring alarm mine lamp of gas

Country Status (1)

Country Link
CN (1) CN2102546U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101649960B (en) * 2008-08-12 2012-03-28 海洋王照明科技股份有限公司 Portable lamp and failure monitoring system used for mine operation
CN102944730A (en) * 2012-11-05 2013-02-27 深圳创维－Rgb电子有限公司 Automatic detection device for voltage abnormal state

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101649960B (en) * 2008-08-12 2012-03-28 海洋王照明科技股份有限公司 Portable lamp and failure monitoring system used for mine operation
CN102944730A (en) * 2012-11-05 2013-02-27 深圳创维－Rgb电子有限公司 Automatic detection device for voltage abnormal state

Similar Documents

Publication Publication Date Title
CN201182028Y (en) Solar intelligent LED street lamp controller
CN104754840A (en) Novel LED driving power supply
CN101835306A (en) Led lamp control circuit and led lamp
CN2102546U (en) Automatic monitoring alarm mine lamp of gas
CN106130174B (en) Power electric for power buoy turns automatically controlled power supply automatic emergency switching and warning device and control method
CN2852496Y (en) Solar energy road lamp controller
CN203367975U (en) Standby electricity-saving device of overvoltage protection
CN103279044B (en) Stand-by energy-saving controller
CN204465888U (en) A kind of intelligent router circuit
CN220823331U (en) A slope monitoring control terminal for street lamp
CN205961525U (en) Novel solar street lamp
CN221329180U (en) Energy-saving control terminal of LED street lamp
CN205491291U (en) Light -emitting diode (LED) driving circuit
CN221225376U (en) PH equipment low-power consumption control system based on battery power supply
CN203054495U (en) Standby control circuit
CN105070087B (en) Intelligent traffic signal failure detector circuit
CN2325808Y (en) Constant-current refrigeration temperature controller
CN213240846U (en) Device for intelligent astronomical controller
CN221328823U (en) DC power supply and DC arc furnace power supply control system
CN219697938U (en) Automatic brightness-adjustable energy-saving street lamp
CN202587485U (en) Control circuit of waterproof LED electric torch
CN203038030U (en) An energy-saving control circuit capable of achieving remotely-controlled standby
CN201369863Y (en) Novel energy-saving control circuit of fishnet light
CN204836721U (en) Photovoltaic electric power and complementary all -in -one of commercial power
CN203813712U (en) Intelligent-type electronic regulator for vehicle

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee