CN201178651Y - Coal gas bird-scaring gun protecting equipment for safety of domestic airport - Google Patents
Coal gas bird-scaring gun protecting equipment for safety of domestic airport Download PDFInfo
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- CN201178651Y CN201178651Y CNU2008200116949U CN200820011694U CN201178651Y CN 201178651 Y CN201178651 Y CN 201178651Y CN U2008200116949 U CNU2008200116949 U CN U2008200116949U CN 200820011694 U CN200820011694 U CN 200820011694U CN 201178651 Y CN201178651 Y CN 201178651Y
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- magnetic valve
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- protector
- bird scaring
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Abstract
The utility model relates to a gas bird driving gun protector applied to the domestic airport safety and protection, and belongs to the technical field of communication electronics. The gas bird driving gun protector adopts newest microelectronic technique, communications technology and full-fledged design method, adds a set of solenoid pilot actuated valves and designs corresponding control software and hardware based on a 51 single-chip, and causes the bird driving gun protector and the original gas bird driving gun to form a system, and the whole system adopts a double solenoid pilot actuated valve structure. Through the control of the corresponding 51 software, when the system fires the gun, i.e. gas is mixed fully with air in a cavity body to ignite and explode, an air supply gas path is separated from the cavity body, thereby ensuring the safety of the system. The gas bird driving gun protector can be arranged at the front end of the bird driving gun used at present in the domestic airport, and solves the problem of gas continuous admission, so as to cause the gas gun to work in the airport field more safely.
Description
Technical field
The utility model belongs to communications electronics class technical field.
Background technology
The coal gas Bird scaring gun is the important scarecrow device that is applied to the airport, and various birds are had tangible expeling effect.Its structure comprises gun tube, gun carriage, magnetic valve, igniter and logic control circuit, it is characterized in that: coal gas enters in the bore by nozzle, mixes with air in the bore, blasts behind the electronic striking, and the audio sound that is produced spreads out of from the gun tube direction.And the coal gas Bird scaring gun that is applied to the domestic airport all adopts the time sequence control logic technology, uses the control structure of a magnetic valve of a control module control.Its control logic is near the first jockey valve 1 second, coal gas to be sprayed into, and closes magnetic valve then, and last electromagnetism sparking reaches the purpose of blowing out.The control technology of Bird scaring gun adopts sequential logical circuit the nineties, as 555 timing circuits, and digital clock timing controlled technology.After 2000, because the single-chip microcomputer anti-electromagnetic interference capability constantly strengthens, the logic control of adopting single-chip microcomputer to carry out has appearred.On the whole, logic control circuit is as above controlled coal gas by the break-make of controlling single magnetic valve and is entered bore, controls the interval of blowing out by time-delay.If its control circuit of this logic control or magnetic valve break down, to cause gas leak and sustained combustion, this is the hidden danger and the defective of old-fashioned Bird scaring gun, especially safety coefficient is required very high domestic each big airport, has great potential safety hazard especially.
Summary of the invention
The purpose of this utility model just provides a kind of safe class that improves movement area, airport Bird scaring gun, drives under the prerequisite of bird effect guaranteeing, stops the coal gas Bird scaring gun protective device that is applied to the domestic airport safety precaution of the phenomenon of the gas leakage of coal gas big gun and spontaneous combustion.
Technical solution of the present utility model is to adopt the sequential of SCM Based embedded technology control air inlet magnetic valve, and designed two logic drive circuits of magnetic valve special use.
The Bird scaring gun protection system of this high safety factor is installed in the front end of airport bird scaring big gun, and connects with it.
Structure of the present utility model is, is that core microprocessors is formed the Bird scaring gun protection system with the 89S51 single-chip microcomputer, and the switching sequence of air inlet magnetic valve is finished by 89S51 control.This protection system is installed between gas tank and the Bird scaring gun, according to the Push And Release of the time interval controls air inlet magnetic valve of Bird scaring gun work, and then the control source of the gas.Whole system has just formed the dual-coil electromagnetic valve structure like this.Two magnetic valves are respectively by 89S51 Single-chip Controlling and the control of former Bird scaring gun control system, and former Bird scaring gun working method is constant, according to the sequential control system venting and the sparking that set up on their own.When system blows out coal gas in cavity with the abundant mixed firing explosion time of air, the software and hardware of protection system has guaranteed that the source of the gas gas circuit separates fully with cavity, thereby has guaranteed the safety of system.
The circuit theory of control module of the present utility model is, the 89S51 single-chip microcomputer is the most popular at present and the higher a kind of single-chip microcomputer of frequency of utilization, can adopt multiple crystal oscillator, and embedded FLASH is stable and reliable for performance, is widely applied to industrial occasions.Can use compilation or C Programming with Pascal Language, two 16 bit timing devices be arranged for selecting for use, input/output port is the driven MOS gate circuit directly, so can reach the SECO requirement of Bird scaring gun protection system.For fear of single chip microcomputer halt that electromagnetic interference produced may, external watchdog circuit, in the time of single chip microcomputer halt, watchdog circuit automatically resets, and guarantees working properly and air inlet magnetic valve working properly of single-chip microcomputer.Drive circuit adopts two MOS switching tube tandem drive air inlet magnetic valves, and drive level is by the I/O mouth output of 89S51, and one connects the grid of MOS switching tube through the not circuit negate, and another directly links to each other with the grid of second MOS switching tube.This method for designing has improved the safety coefficient of Bird scaring gun protection system from two aspects, reduce the possibility of pressure-releasing electromagnetic valve maloperation.Watchdog circuit adopts MAX813, and its input links to each other with 89,S51 one I/O, and 89S51 regularly provides feeding-dog signal to watchdog circuit.Its output directly links to each other with the 89S51 reset terminal, when 89S51 breaks down can not in time provide feeding-dog signal the time, and watchdog circuit output reset enable signal 89S51 circuit reliable reset, protection system enters normal operating conditions.
The solenoid control drive circuit of the two pipes that open the light of oppositely two logics is the IRF630 by two series connection.
Switching tube is formed, and in the time of the conducting simultaneously of two pipes, 12V voltage is access in, solenoid closure.Two outputs of 89S51, an end directly is connected with the IRF630 switching tube, and the other end is connected with another IRF630 switching tube behind the door by non-.Such design has two characteristics, if the first single-chip microcomputer fault or reset, because the effect of not gate, two IRF630 have been added into opposite level, conducting simultaneously.At this moment magnetic valve can not opened, and has so just avoided magnetic valve to continue the possibility of venting.The second, the employing of dual switch structure has been avoided because single IRF630 is breakdown or damage the possibility that the magnetic valve that causes continues venting.
The beneficial effects of the utility model are: the first, the utility model can be installed in the front end of former Bird scaring gun easily, increase a magnetic valve and control system thereof, under the situation of circuit that does not change former bird-scaring unit and gas circuit, improved the safe class of former Bird scaring gun; The second, the 89S51 element circuit can substitute the logic control element of former Bird scaring gun, and the two logic controls to magnetic valve are provided.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further specified.
Fig. 1 is a structure chart of the present utility model.
Fig. 2 is the circuit theory diagrams of control module of the present utility model.
Fig. 3 is a systems soft ware FB(flow block) of the present utility model.
Among the figure, 1. magnetic valve 1, and 2. magnetic valve 2,3. Bird scaring gun bore, 4. protection system logic control element, 5. Bird scaring gun logic control element.
Embodiment
1. the system architecture of the dual-coil electromagnetic valve formed of protection system and former Bird scaring gun: the air inlet magnetic valve of Bird scaring gun protection system and the gas valve of former Bird scaring gun have been formed the system architecture of bivalve, and the working method of bivalve has two kinds: the method for synchronization and asynchronous system.The synchronous working mode is to open the air inlet magnetic valve earlier, opens pressure-releasing electromagnetic valve after 2 seconds, and the coal gas of putting 1 second is to bore, after close pressure-releasing electromagnetic valve, postpone air gas fully to be mixed in 1 second, connect electronic striking, the some coal gas.Postpone 1 second, close the air inlet magnetic valve, blow out thereby finish once.From this workflow as can be seen, if taking place, the Bird scaring gun fault causes the continuous venting of pressure-releasing electromagnetic valve, because opening time of air inlet magnetic valve has only 5 seconds, define and can not surpass 5 seconds fault time, thereby avoided coal gas sustained combustion the accident that may cause.Asynchronous system is that air inlet magnetic valve and pressure-releasing electromagnetic valve are not opened simultaneously, the air inlet magnetic valve every venting in 3 minutes once, coal gas is stored among the pipeline between protection system and the Bird scaring gun.The coal gas that Bird scaring gun is blown out is from the storage gas in the pipeline, thereby realized the isolation fully of gas circuit and source of the gas.According to calculating of the present utility model and actual measurement, gaspipe line length is greater than 3 meters, and storage coal gas can reach desirable sound quality.
2. the design of circuit system, software flow
House dog is adopted power monitoring chip MAX813 chip, and its main feature is as follows
(1) system power on, when power down and supply voltage reduce, the 7th pin produces the output that resets, the representative value of reseting pulse width is 200ms, high level is effective, reset gate is limited to 4.65V.
(2) if in 1.6s, do not trigger this circuit (i.e. the 6 tunnel no pulse input), then the 8th a pin output low level signal, i.e. watchdog circuit output signal.
(3) hand-reset input, low level is effective, i.e. low level of the 1st pin input, then the 7th pin produces the output that resets.
(4) have the 1.25V threshold detector, the 4th pin is output for input, the 5th pin.
In circuit diagram, MAX813 the 1st pin is linked to each other with the 8th pin, the 7th pin connects the resetting pin (the 9th pin of 89S51) of CPU, and the 6th pin links to each other with the P1.0 of CPU.In the single-chip microcomputer running, P1.0 constantly exports the 1s pulse signal.If CPU enters endless loop because of certain reason, then P1.0 no pulse output.So in the 8th pin output low level of MAX813, this low level is added to the 1st pin after 1.6 seconds, make MAX813 produce the output that resets, make the CPU active homing, break away from the predicament of endless loop.In addition, when supply voltage was lower than threshold value 4.65V, MAX813 also produced reset signal output, and CPU is in reset mode, does not carry out any instruction, recovered normal up to supply voltage, therefore can effectively prevent because of supply voltage when low CPU produce wrong action.
The P1.1 mouth of 89S51 output high level signal after system powers on, P2.0 mouth output low level signal, wherein the high level signal of P1.1 mouth output becomes low level signal through behind the connected 74HC04 not circuit, these two low level signals make two not conductings of switching tube of control magnetic valve, thereby make magnetic valve be in closed condition.P1.4 mouth output low level signal is lighted indicator lamp LED2 simultaneously, calls 10 seconds time delay subroutines.Then P1.4 mouth output high level signal is closed indicator lamp LED2, calls 10 seconds time delay subroutines.Enter then among the cyclic program OPEN, the P1.1 output low level signal of 89S51, P2.0 mouth output high level signal, wherein the high level signal of P1.1 mouth output becomes high level signal through behind the connected 74HC04 not circuit, the level of these two signals makes two switching tubes be in conducting state simultaneously, cause the magnetic valve place in circuit, make coal gas enter bore.P1.3 mouth output low level signal is lighted indicator lamp LED1 simultaneously, calls 5 seconds time delay subroutines.Then the P2.0 mouth output low level signal of 89S51 makes the not conducting simultaneously of two switching tubes, and magnetic valve is in closed condition.The high level signal of P1.3 mouth output is simultaneously closed indicator lamp LED1, calls 3 minutes time delay subroutines.Return cyclic program OPEN, so circulation is gone down.
It is that the P1.0 mouth is constantly exported the 1s pulse signal that 89S51 regularly provides feeding-dog signal to watchdog circuit.This pulse signal is to realize in the delay function of 1s.Be P1.0 mouth output low level signal, time-delay 510ms, P1.0 mouth output high level signal, time-delay 490ms, P1.0 output low level signal.5s and 10s delay function are realized by the delay function that calls 1s for 5 times and 10 times respectively.The delay function that calls 10s for 6 times is formed the delay function of 60s, and the delay function of 3min is to call the 60s delay function 3 times and realize.
3. the enforcement of two logic control circuits of drive circuit
Two IRF630 switching tube series connection in the circuit diagram are used, use two signal level controls respectively, two signal levels are level as shown in the figure and make when two IRF630 level are high level logic simultaneously simultaneously, two just conductings simultaneously of IRF630 switching tube, cause the magnetic valve place in circuit, promptly open magnetic valve and put coal gas and enter bore.
Use the meaning of two logic controls to be when the single chip circuit fault time, or guarantee the outage of magnetic valve during an IRF630 fault, coal gas can not exitted continuously, thus the safety of raising control logic.
Claims (1)
1. coal gas Bird scaring gun protective device that is applied to the domestic airport safety precaution, it is characterized in that, adopt the sequential of SCM Based embedded technology control air inlet magnetic valve, and two logic drive circuits of magnetic valve special use have been designed, magnetic valve 1 (1), magnetic valve 2 (2) and Bird scaring gun bore (3) are connected successively, protection system logic control element (4) is connected with magnetic valve 1 (1), and Bird scaring gun logic control element (5) is connected with magnetic valve 2 (2);
A. the airport with the dual-coil electromagnetic valve gas-supplying structure of Bird scaring gun is, the magnetic valve of Bird scaring gun protector and rough gas big gun magnetic valve belong to cascaded structure, respectively by Bird scaring gun protector control module and the control of rough gas big gun timing control unit; If the fault rate 10 of a magnetic valve
-5, then two magnetic valve simultaneous faults may be 10
-10So the dual-coil electromagnetic valve structure can improve safety greatly, after the Bird scaring gun protector has been installed; the course of work of system is: after powering on, protector postpones 10 seconds, opens the protector magnetic valve; coal gas flows into the pipeline between two magnetic valves, closes the protector magnetic valve then.The coal gas big gun was through 3 minutes delay, and the big gun magnetic valve that turns on the gas-fire was exitted 1 second, closed coal gas big gun magnetic valve then, and the work of blowing out is finished in igniting, and system repeats above-mentioned flow process afterwards, was night up to power-off or the test of original system photosensitive circuit, quit work,
The solenoid control drive circuit of the two pipes that open the light of b. oppositely two logics is the IRF630 by two series connection
Switching tube is formed, and in the time of the conducting simultaneously of two pipes, 12V voltage is access in, solenoid closure, and two outputs of 89S51, an end directly is connected with the IRF630 switching tube, and the other end is connected with another IRF630 switching tube behind the door by non-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200116949U CN201178651Y (en) | 2008-03-19 | 2008-03-19 | Coal gas bird-scaring gun protecting equipment for safety of domestic airport |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200116949U CN201178651Y (en) | 2008-03-19 | 2008-03-19 | Coal gas bird-scaring gun protecting equipment for safety of domestic airport |
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| CN201178651Y true CN201178651Y (en) | 2009-01-14 |
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| CNU2008200116949U Expired - Fee Related CN201178651Y (en) | 2008-03-19 | 2008-03-19 | Coal gas bird-scaring gun protecting equipment for safety of domestic airport |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612267A (en) * | 2021-06-24 | 2021-11-05 | 陕西华昱太阳能科技有限公司 | Safe discharge circuit of electronic gun and control method |
-
2008
- 2008-03-19 CN CNU2008200116949U patent/CN201178651Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612267A (en) * | 2021-06-24 | 2021-11-05 | 陕西华昱太阳能科技有限公司 | Safe discharge circuit of electronic gun and control method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20100319 |