CN112230078A - Device and method for testing methane wind power locking function of coal mine monitoring system - Google Patents
Device and method for testing methane wind power locking function of coal mine monitoring system Download PDFInfo
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 186
- 238000012360 testing method Methods 0.000 title claims abstract description 101
- 238000012544 monitoring process Methods 0.000 title claims abstract description 93
- 239000003245 coal Substances 0.000 title claims abstract description 38
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- 239000003990 capacitor Substances 0.000 claims description 6
- 101150013423 dsl-1 gene Proteins 0.000 claims description 6
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- 230000008054 signal transmission Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention relates to the technical field of coal mine safety monitoring, in particular to a device and a method for testing a methane wind power locking function of a coal mine monitoring system, which comprises a computer, a controller and a controller, wherein the computer is used for setting parameters, transmission information and control instructions required by testing; the switch is connected with the computer and the analog sensor and is used for exchanging and transmitting data between the analog sensor and the computer; the analog sensor is used for acquiring methane concentration data; the timer is connected with the analog sensor and used for calculating the power-off time of the substation of the monitored system; a timer timing driving interface circuit is connected between the analog sensor and the timer, and the common test module is connected with the computer and the timer and is used for controlling the substation of the monitored system to turn off the power supply of the underground power supply equipment connected with the substation of the monitored system and the turn off of the timer; the invention has the advantages of accurately measuring the power interruption time of the methane wind power locking function and being suitable for monitoring system substations of various power types.
Description
Technical Field
The invention relates to the technical field of coal mine safety monitoring, in particular to a device and a method for testing a methane wind power locking function of a coal mine monitoring system.
Background
Along with the wide application of the coal mine safety monitoring system and the popularization and promotion of the upgrading and reconstruction of the coal mine safety monitoring system, the existing coal mine safety monitoring system testing instrument cannot meet the requirement of the system methane wind power locking function testing, the number of monitoring devices needed by the coal mine safety monitoring system under a coal mine is increased, the system control logic is increased, particularly for the online accurate measurement of the methane wind power locking function of the coal mine safety monitoring system, an online testing device and a testing method for the methane wind power locking function of the monitoring system, which can meet the new standard requirements, are not provided at present.
Disclosure of Invention
In order to solve the problems, the invention provides a device and a method for testing the methane wind power blocking function of a monitoring system for a coal mine, which have the advantages of accurately measuring the power interruption time of the methane wind power blocking function and being suitable for monitoring system substations with various power types.
In order to achieve the purpose, the invention adopts the technical scheme that:
a methane wind power locking function testing device of a monitoring system for a coal mine comprises
The computer is used for setting parameters, transmission information and control instructions required by the test;
the switch is connected with the computer and the analog sensor and is used for exchanging and transmitting data between the analog sensor and the computer;
the analog sensor is used for acquiring methane concentration data;
the timer is connected with the analog sensor and used for calculating the power-off time of the substation of the monitored system;
a timer timing driving interface circuit is connected between the analog sensor and the timer and is used for driving the rear trigger timer to start timing;
the public testing module is connected with the computer and the timer and is used for controlling the substation of the monitored system to turn off the power supply of the underground power supply equipment connected with the substation of the monitored system and turn off the timer; the public control module comprises an ARM chip, an RS485 signal output interface circuit, a timer timing stopping driving interface circuit and a tested breaker interface circuit, the RS485 signal output interface circuit is connected with the tested monitoring system substation and used for transmitting a signal of the public control module to the tested monitoring system substation, the timer timing stopping driving interface circuit is connected with the timer and used for driving the timer to stop timing through an optical coupler when the tested breaker of the tested monitoring system substation acts, and the tested breaker interface circuit is connected with the tested breaker of the tested monitoring system substation and used for receiving action state information of the tested breaker of the tested monitoring system substation;
the air switch is used for controlling the on and off of the methane wind power locking function testing device of the coal mine monitoring system;
the first power supply is used for supplying power to all components in the methane wind power locking function testing device of the coal mine monitoring system;
and the direct-current stabilized voltage power supply supplies power to the substation of the monitored monitoring system.
The device also comprises a signal control module, an alternating current contactor and a transformer, wherein the signal control module is connected with the computer and the alternating current contactor and is used for receiving the instruction of the computer so as to control the action of the alternating current contactor and switch the power supply voltage of the substation of the monitored system,
the signal control module comprises a computer instruction receiving circuit and an alternating current power supply switching control interface circuit, the alternating current power supply switching control interface circuit is used for connecting and controlling the alternating current contactor,
and the alternating current contactor is connected with the transformer and the substation of the monitored monitoring system and is used for transmitting the power supply of the transformer to the substation of the monitored monitoring system.
The timer timing driving interface circuit comprises a triode Q1, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and an indicator light DSL1, the analog sensor is connected to the base of the triode Q1 after being subjected to current limiting through a resistor R1, the collector of the triode Q1 is connected with a first power supply through a resistor R2, the first power supply is connected with the timer with the collector of the Q1 after being connected with the resistor R3 and the indicator light DSL1, and the emitter of the triode Q1 is grounded through a resistor R4.
The timer stops timing and drives the interface circuit to include opto-coupler U1, resistance R5, resistance R6, resistance R7 and pilot lamp DSL2, the positive pole of opto-coupler U1 is inserted to public control module behind the resistance R5 current-limiting, opto-coupler U1 collector electrode is connected with first power through resistance R6, the projecting pole ground connection of opto-coupler U1, first power is connected resistance R7 and is inserted the timer through pilot lamp DSL2 and opto-coupler U1's collector electrode.
The RS485 signal output interface circuit comprises a MAX487 chip U2, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a transient diode D1, a transient diode D2 and a jumper cap JP1, wherein an 8 pin of the MAX487 chip U2 is connected with a power supply 5V, a 1 pin-4 pin of the MAX487 chip U2 is used for isolating and converting RS485 signals of a common control module for output through the resistor R8, the resistor R9 and the resistor R10, and a 6 pin and a 7 pin of the MAX487 chip U2 are grounded through the resistor R11, connected with the power supply 5V through the R12, and limited through the jumper cap JP1, the resistor R13, the resistor R14 and the resistor R15, and then the transient diode D1 and the transient diode D2 are used for protecting and grounding to output RS485 signals.
The alternating current power supply switching control interface circuit comprises a resistor R16, a resistor R17, a resistor R18, a resistor R19, an optocoupler U19, a capacitor C19, a triode Q19, an indicator light DSL 19, a diode D19 and a relay K19, a signal control module is connected with a first power supply and is connected to the anode of the optocoupler U19 after being limited by the resistor R19, the collector of the optocoupler U19 is connected with the base of the triode Q19 through the resistor R19, the resistor R19 and the capacitor C19, the emitter of the optocoupler U19 is grounded, the collector of the triode Q19 is connected with the first power supply and the collector of the triode Q19 through the resistor R19, the indicator light DSL 19, the resistor R19, the diode D19 and the diode D19, the emitter of the triode Q19 is grounded, the positive pole and the negative pole and the positive and the negative pole of.
The computer is an integrated computer with a touch screen.
The public control module is connected with a power-off signal indicator lamp, and the signal control module is connected with an alternating current power supply voltage indicator lamp.
A method for testing a methane wind power locking function of a monitoring system for a coal mine is used, and comprises the following steps:
the method comprises the following steps of carrying out methane wind power locking function test on a substation of a monitored monitoring system powered by a direct-current power supply:
selecting a power supply mode of the matched substation of the monitored system to be supplied by a computer, and supplying power to the substation of the monitored system by using direct-current regulated voltage;
setting triggering conditions through a computer, namely setting the concentration of methane gas, and selecting and inputting one of the following data: a. the methane concentration of the tunneling working face is more than or equal to one percent; b. the methane concentration of the backflow wind on the driving face is more than or equal to one percent; c. the concentration of methane in the air flow entering the working face to be tunneled in series is more than or equal to five-zero percent;
and step three, starting the test through a computer, sending a timing instruction to a timer by the analog sensor after the concentration of the methane gas detected by the analog sensor reaches a trigger condition, starting the timer to work, controlling the action of a tested breaker of the tested monitoring system substation after the tested monitoring system substation receives the information that the concentration of the methane gas reaches the trigger condition, sending a timing stopping instruction to the timer after a public control module receives the action feedback of the tested breaker of the tested monitoring system substation, stopping the timer, obtaining the power-off duration by the computer, and finishing the test.
The method comprises the following steps of carrying out methane wind power locking function test on a substation of a monitored monitoring system powered by an alternating current power supply:
step one, selecting a power supply mode of the matched substation of the monitored system through a computer, and selecting one of the following modes: selecting any one of 1.1 times of AC test power supply, 1.0 times of AC test power supply and 0.75 times of AC test power supply in 1140V voltage gear;
or any one of the alternating current test power supply with the voltage level of 660V of 1.1 times, the alternating current test power supply with the voltage level of 1.0 time and the alternating current test power supply with the voltage level of 0.75 time is selected;
or any one of the 1.1 times alternating current test power supply, the 1.0 times alternating current test power supply and the 0.75 times alternating current test power supply of the 127V voltage gear is selected;
setting triggering conditions through a computer, namely setting the concentration of methane gas, and selecting and inputting one of the following data: a. the methane concentration of the tunneling working face is more than or equal to one percent; b. the methane concentration of the backflow wind on the driving face is more than or equal to one percent; c. the concentration of methane in the air flow entering the working face to be tunneled in series is more than or equal to five-zero percent;
and step three, starting the test through a computer, sending a timing instruction to a timer by the analog sensor after the concentration of the methane gas detected by the analog sensor reaches a trigger condition, starting the timer to work, controlling the action of a tested breaker of the tested monitoring system substation after the tested monitoring system substation receives the information that the concentration of the methane gas reaches the trigger condition, sending a timing stopping instruction to the timer after a public control module receives the action feedback of the tested breaker of the tested monitoring system substation, stopping the timer, obtaining the power-off duration by the computer, and finishing the test.
The beneficial effects of the invention are as follows: the invention adopts the electronic timer to measure the power-off time of the substation of the monitored monitoring system, replaces the original measuring method of manual timing by an electronic stopwatch, can more accurately measure the power-off time, can meet the regulation of the general technical requirements of a new coal mine safety monitoring system, and is a powerful judgment basis and detection means for the local control execution time and the wind-power locking function of the safety monitoring system; the method of combining the direct current power supply mode and the alternating current power supply mode is adopted, the requirements of substations of different monitoring systems can be met, the alternating current power supply mode can be switched through selection of the touch screen, the alternating current power supply voltage is switched without manual wiring and voltage regulation, high voltage danger is avoided, safety is improved, and reliability and accuracy are improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic circuit diagram of a timer timing driving interface circuit according to the present invention;
FIG. 3 is a schematic circuit diagram of the interface circuit for driving the timer to stop timing according to the present invention;
FIG. 4 is a schematic circuit diagram of an RS485 signal output interface circuit according to the present invention;
fig. 5 is a schematic circuit diagram of an ac power switching control interface circuit according to the present invention.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in figures 1-5, the device for testing the methane wind power locking function of the monitoring system for the coal mine comprises a device for testing the methane wind power locking function of the monitoring system for the coal mine, and comprises
The computer is used for setting parameters, transmission information and control instructions required by the test;
the switch is connected with the computer and the analog sensor and is used for exchanging and transmitting data between the analog sensor and the computer;
the analog sensor is used for acquiring methane concentration data;
the timer is connected with the analog sensor and used for calculating the power-off time of the substation of the monitored system;
a timer timing driving interface circuit is connected between the analog sensor and the timer and is used for driving the rear trigger timer to start timing;
the public testing module is connected with the computer and the timer and is used for controlling the substation of the monitored system to turn off the power supply of the underground power supply equipment connected with the substation of the monitored system and turn off the timer; the public control module comprises an ARM chip, an RS485 signal output interface circuit, a timer timing stopping driving interface circuit and a tested breaker interface circuit, wherein the RS485 signal output interface circuit is connected with the tested monitoring system substation and used for transmitting a signal of the public control module to the tested monitoring system substation;
the air switch is used for controlling the on and off of the methane wind power locking function testing device of the coal mine monitoring system;
the first power supply is used for supplying power to all components in the methane wind power locking function testing device of the coal mine monitoring system;
and the direct-current stabilized voltage power supply supplies power to the substation of the monitored monitoring system.
The device also comprises a signal control module, an alternating current contactor and a transformer, wherein the signal control module is connected with the computer and the alternating current contactor and is used for receiving the instruction of the computer so as to control the action of the alternating current contactor and switch the power supply voltage of the substation of the monitored system,
the signal control module comprises a computer instruction receiving circuit and an alternating current power supply switching control interface circuit, the alternating current power supply switching control interface circuit is used for connecting and controlling the alternating current contactor,
and the alternating current contactor is connected with the transformer and the substation of the monitored monitoring system and is used for transmitting the power supply of the transformer to the substation of the monitored monitoring system.
As shown in fig. 2, the power source is provided by a first power source, the timer timing driving interface circuit includes a triode Q1, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and an indicator DSL1, the analog sensor is connected to the base of the triode Q1 after being current-limited by a resistor R1, the collector of the triode Q1 is connected to the first power source through a resistor R2, the first power source is connected to the timer with the collector of the transistor Q1 after being connected to the resistor R3 and the indicator DSL1, and the emitter of the triode Q1 is grounded through a resistor R4. And triggering a timer to start timing after the analog sensor is driven.
As shown in fig. 3, a first power supply of power supply oil is provided, the timer stops timing and drives the interface circuit to stop timing through the optical coupler when a tested breaker of a substation of a monitored monitoring system acts, and the timer stops timing and comprises an optical coupler U1, a resistor R5, a resistor R6, a resistor R7 and an indicator light DSL2, a public control module is connected to an anode of the optical coupler U1 after being limited by a resistor R5, a collector of the optical coupler U1 is connected with the first power supply through a resistor R6, an emitter of the optical coupler U1 is grounded, and a first power supply connecting resistor R7 is connected to the timer through a collector of the indicator light DSL2 and the optical coupler U1.
As shown in fig. 4, the RS485 signal output interface circuit includes a MAX487 chip U2, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a transient diode D1, a transient diode D2, and a jumper cap JP1, wherein an 8 pin of the MAX487 chip U2 is connected to a power supply 5V, 1 pin to 4 pins of the MAX487 chip U2 are isolated and converted by the resistor R8, the resistor R9, and the resistor R10 to output an RS485 signal of the common control module, and a 6 pin and a 7 pin of the 487 chip U2 are grounded by the resistor R11, connected to the power supply 5V by R12, and limited by the jumper cap JP1, the resistor R13, the resistor R14, and the resistor R15, and then the transient diode D1 and the transient diode D2 are protected to be grounded to output the RS485 signal. The MAX487 chip U2 is a 485 signal conversion chip, transmits the parameters of the analog sensor to the substation of the monitored monitoring system through RS485 signal transmission, and outputs corresponding control signals through judgment of the substation of the monitored monitoring system to control the action of the tested breaker. The tested breaker is arranged behind a control node of a substation of the tested monitoring system and in front of underground alternating current power supply equipment, and when the content of methane measured by the methane sensor exceeds the standard, the tested breaker cuts off the power supply of the underground alternating current power supply equipment after receiving a power-off command of the substation. Jumper cap JP1 functions as a switch.
As shown in fig. 5, the power is provided by the first power source, and the signal control module drives the relay through the optical coupler and outputs the transformer test power through the ac contactor when receiving a power switching instruction sent by the computer. The alternating current power supply switching control interface circuit comprises a resistor R16, a resistor R17, a resistor R18, a resistor R19, an optocoupler U19, a capacitor C19, a triode Q19, an indicator light DSL 19, a diode D19 and a relay K19, a signal control module is connected with a first power supply and is connected to the anode of the optocoupler U19 after being limited by the resistor R19, the collector of the optocoupler U19 is connected with the base of the triode Q19 through the resistor R19, the resistor R19 and the capacitor C19, the emitter of the optocoupler U19 is grounded, the collector of the triode Q19 is connected with the first power supply and the collector of the triode Q19 through the resistor R19, the indicator light DSL 19, the resistor R19, the diode D19 and the diode D19, the emitter of the triode Q19 is grounded, the positive pole and the negative pole and the positive and the negative pole of.
The computer is an integrated computer with a touch screen.
The public control module is connected with a power-off signal indicator lamp, and the signal control module is connected with an alternating current power supply voltage indicator lamp.
A method for testing a methane wind power locking function of a monitoring system for a coal mine is used, and comprises the following steps:
the method comprises the following steps of carrying out methane wind power locking function test on a substation of a monitored monitoring system powered by a direct-current power supply:
selecting a power supply mode of the matched substation of the monitored system to be supplied by a computer, and supplying power to the substation of the monitored system by using direct-current regulated voltage;
setting triggering conditions through a computer, namely setting the concentration of methane gas, and selecting and inputting one of the following data: a. the methane concentration of the tunneling working face is more than or equal to one percent; b. the methane concentration of the backflow wind on the driving face is more than or equal to one percent; c. the concentration of methane in the air flow entering the working face to be tunneled in series is more than or equal to five-zero percent;
and step three, starting the test through a computer, sending a timing instruction to a timer by the analog sensor after the concentration of the methane gas detected by the analog sensor reaches a trigger condition, starting the timer to work, controlling the action of a tested breaker of the tested monitoring system substation after the tested monitoring system substation receives the information that the concentration of the methane gas reaches the trigger condition, sending a timing stopping instruction to the timer after a public control module receives the action feedback of the tested breaker of the tested monitoring system substation, stopping the timer, obtaining the power-off duration by the computer, and finishing the test.
The method comprises the following steps of carrying out methane wind power locking function test on a substation of a monitored monitoring system powered by an alternating current power supply:
step one, selecting a power supply mode of the matched substation of the monitored system through a computer, and selecting one of the following modes: selecting any one of 1.1 times of AC test power supply, 1.0 times of AC test power supply and 0.75 times of AC test power supply in 1140V voltage gear;
or any one of the alternating current test power supply with the voltage level of 660V of 1.1 times, the alternating current test power supply with the voltage level of 1.0 time and the alternating current test power supply with the voltage level of 0.75 time is selected;
or any one of the 1.1 times alternating current test power supply, the 1.0 times alternating current test power supply and the 0.75 times alternating current test power supply of the 127V voltage gear is selected;
setting triggering conditions through a computer, namely setting the concentration of methane gas, and selecting and inputting one of the following data: a. the methane concentration of the tunneling working face is more than or equal to one percent; b. the methane concentration of the backflow wind on the driving face is more than or equal to one percent; c. the concentration of methane in the air flow entering the working face to be tunneled in series is more than or equal to five-zero percent;
and step three, starting the test through a computer, sending a timing instruction to a timer by the analog sensor after the concentration of the methane gas detected by the analog sensor reaches a trigger condition, starting the timer to work, controlling the action of a tested breaker of the tested monitoring system substation after the tested monitoring system substation receives the information that the concentration of the methane gas reaches the trigger condition, sending a timing stopping instruction to the timer after a public control module receives the action feedback of the tested breaker of the tested monitoring system substation, stopping the timer, obtaining the power-off duration by the computer, and finishing the test.
And clicking a methane wind power locking function test icon of the monitoring system for the coal mine of the computer, starting and operating test software, selecting a direct current test power supply of a direct current power supply gear, and supplying power to the substation of the monitored monitoring system by using a direct current stabilized voltage power supply at the moment. The method comprises the steps of inputting a methane gas concentration value of an analog sensor on a computer touch screen, sending the methane gas concentration value to the analog sensor through a switch, sending a timing instruction to a timer by the analog sensor, and starting timing by the timer. Meanwhile, the computer sends a real-time methane gas concentration value tested by the analog sensor to the public control module, the methane gas concentration value is transmitted to a monitored system substation through RS485 signal transmission, whether a trigger condition is met or not is judged by the monitored system substation, a corresponding control signal is output to control the action of a tested breaker of the monitored system substation, after the action of the tested breaker, the public control module receives action state feedback and sends a timing stopping command to the timer, the methane wind power locking function test is completed, the power-off time is accurately calculated, and the device recovers the initial state after a reset button is clicked.
Clicking a methane wind power locking function test icon of a monitoring system for a coal mine of a computer, starting and running test software, selecting one of a 1.1-time alternating current test power supply, a 1.0-time alternating current test power supply and a 0.75-time alternating current test power supply at 1140V voltage level on an alternating current test power supply voltage output selection interface of a touch screen, or selecting one of a 1.1-time alternating current test power supply, a 1.0-time alternating current test power supply and a 0.75-time alternating current test power supply at 660V voltage level, or selecting one of a 1.1-time alternating current test power supply, a 1.0-time alternating current test power supply and a 0.75-time alternating current test power supply at 127V voltage level, supplying power to substations of the monitored system at the moment, providing selection of alternating current test power supplies with different multiples, and verifying the methane wind power locking function of the monitored system in the monitored system under different alternating current power supply states, click the send-immediately button. The computer sends an output voltage grade instruction to the signal control module, and the signal control module controls the action of the alternating current contactor to switch the alternating current power supply voltage of the substation of the monitored system. The method comprises the steps of inputting a methane gas concentration value of an analog sensor on a computer touch screen, sending the methane gas concentration value to the analog sensor through a switch, sending a timing instruction to a timer by the analog sensor, and starting timing by the timer. Meanwhile, the computer sends a real-time methane gas concentration value tested by the analog sensor to the public control module, the methane gas concentration value is transmitted to a monitored system substation through RS485 signal transmission, whether a trigger condition is met or not is judged by the monitored system substation, a corresponding control signal is output to control the action of a tested breaker of the monitored system substation, after the action of the tested breaker, the public control module receives action state feedback and sends a timing stopping command to the timer, the methane wind power locking function test is completed, the power-off time is accurately calculated, and the device recovers the initial state after a reset button is clicked.
The foregoing is only a preferred embodiment of the present invention, and many variations in the detailed description and the application range can be made by those skilled in the art without departing from the spirit of the present invention, and all changes that fall within the protective scope of the invention are therefore considered to be within the scope of the invention.
Claims (10)
1. Monitoring system methane wind-powered electricity generation shutting function test device for coal mine, its characterized in that: comprises that
The computer is used for setting parameters, transmission information and control instructions required by the test;
the switch is connected with the computer and the analog sensor and is used for exchanging and transmitting data between the analog sensor and the computer;
the analog sensor is used for acquiring methane concentration data;
the timer is connected with the analog sensor and used for calculating the power-off time of the substation of the monitored system;
a timer timing driving interface circuit is connected between the analog sensor and the timer and is used for driving the rear trigger timer to start timing;
the public testing module is connected with the computer and the timer and is used for controlling the substation of the monitored system to turn off the power supply of the underground power supply equipment connected with the substation of the monitored system and turn off the timer; the public control module comprises an ARM chip, an RS485 signal output interface circuit, a timer timing stopping driving interface circuit and a tested breaker interface circuit, the RS485 signal output interface circuit is connected with the tested monitoring system substation and used for transmitting a signal of the public control module to the tested monitoring system substation, the timer timing stopping driving interface circuit is connected with the timer and used for driving the timer to stop timing through an optical coupler when the tested breaker of the tested monitoring system substation acts, and the tested breaker interface circuit is connected with the tested breaker of the tested monitoring system substation and used for receiving action state information of the tested breaker of the tested monitoring system substation;
the air switch is used for controlling the on and off of the methane wind power locking function testing device of the coal mine monitoring system;
the first power supply is used for supplying power to all components in the methane wind power locking function testing device of the coal mine monitoring system;
and the direct-current stabilized voltage power supply supplies power to the substation of the monitored monitoring system.
2. The methane wind power locking function testing device of the coal mine monitoring system according to claim 1, characterized in that: the device also comprises a signal control module, an alternating current contactor and a transformer, wherein the signal control module is connected with the computer and the alternating current contactor and is used for receiving the instruction of the computer so as to control the action of the alternating current contactor and switch the power supply voltage of the substation of the monitored system,
the signal control module comprises a computer instruction receiving circuit and an alternating current power supply switching control interface circuit, the alternating current power supply switching control interface circuit is used for connecting and controlling the alternating current contactor,
and the alternating current contactor is connected with the transformer and the substation of the monitored monitoring system and is used for transmitting the power supply of the transformer to the substation of the monitored monitoring system.
3. The methane wind power locking function testing device of the coal mine monitoring system according to claim 1, characterized in that: the timer timing driving interface circuit comprises a triode Q1, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and an indicator light DSL1, the analog sensor is connected to the base of the triode Q1 after being subjected to current limiting through a resistor R1, the collector of the triode Q1 is connected with a first power supply through a resistor R2, the first power supply is connected with the timer with the collector of the Q1 after being connected with the resistor R3 and the indicator light DSL1, and the emitter of the triode Q1 is grounded through a resistor R4.
4. The methane wind power locking function testing device of the coal mine monitoring system according to claim 1, characterized in that: the timer stops timing and drives the interface circuit to include opto-coupler U1, resistance R5, resistance R6, resistance R7 and pilot lamp DSL2, the positive pole of opto-coupler U1 is inserted to public control module behind the resistance R5 current-limiting, opto-coupler U1 collector electrode is connected with first power through resistance R6, the projecting pole ground connection of opto-coupler U1, first power is connected resistance R7 and is inserted the timer through pilot lamp DSL2 and opto-coupler U1's collector electrode.
5. The methane wind power locking function testing device of the coal mine monitoring system according to claim 1, characterized in that: the RS485 signal output interface circuit comprises a MAX487 chip U2, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a transient diode D1, a transient diode D2 and a jumper cap JP1, wherein an 8 pin of the MAX487 chip U2 is connected with a power supply 5V, a 1 pin-4 pin of the MAX487 chip U2 is used for isolating and converting RS485 signals of a common control module for output through the resistor R8, the resistor R9 and the resistor R10, and a 6 pin and a 7 pin of the MAX487 chip U2 are grounded through the resistor R11, connected with the power supply 5V through the R12, and limited through the jumper cap JP1, the resistor R13, the resistor R14 and the resistor R15, and then the transient diode D1 and the transient diode D2 are used for protecting and grounding to output RS485 signals.
6. The methane wind power locking function testing device of the coal mine monitoring system according to claim 2, characterized in that: the alternating current power supply switching control interface circuit comprises a resistor R16, a resistor R17, a resistor R18, a resistor R19, an optocoupler U19, a capacitor C19, a triode Q19, an indicator light DSL 19, a diode D19 and a relay K19, a signal control module is connected with a first power supply and is connected to the anode of the optocoupler U19 after being limited by the resistor R19, the collector of the optocoupler U19 is connected with the base of the triode Q19 through the resistor R19, the resistor R19 and the capacitor C19, the emitter of the optocoupler U19 is grounded, the collector of the triode Q19 is connected with the first power supply and the collector of the triode Q19 through the resistor R19, the indicator light DSL 19, the resistor R19, the diode D19 and the diode D19, the emitter of the triode Q19 is grounded, the positive pole and the negative pole and the positive and the negative pole of.
7. The methane wind power locking function testing device of the coal mine monitoring system according to claim 1, characterized in that: the computer is an integrated computer with a touch screen.
8. The methane wind power locking function testing device of the coal mine monitoring system according to claim 2, characterized in that: the public control module is connected with a power-off signal indicator lamp, and the signal control module is connected with an alternating current power supply voltage indicator lamp.
9. A method for testing a methane wind power locking function of a coal mine monitoring system is characterized by comprising the following steps of:
the method comprises the following steps of carrying out methane wind power locking function test on a substation of a monitored monitoring system powered by a direct-current power supply:
selecting a power supply mode of the matched substation of the monitored system to be supplied by a computer, and supplying power to the substation of the monitored system by using direct-current regulated voltage;
setting triggering conditions through a computer, namely setting the concentration of methane gas, and selecting and inputting one of the following data: a. the methane concentration of the tunneling working face is more than or equal to one percent; b. the methane concentration of the backflow wind on the driving face is more than or equal to one percent; c. the concentration of methane in the air flow entering the working face to be tunneled in series is more than or equal to five-zero percent;
and step three, starting the test through a computer, sending a timing instruction to a timer by the analog sensor after the concentration of the methane gas detected by the analog sensor reaches a trigger condition, starting the timer to work, controlling the action of a tested breaker of the tested monitoring system substation after the tested monitoring system substation receives the information that the concentration of the methane gas reaches the trigger condition, sending a timing stopping instruction to the timer after a public control module receives the action feedback of the tested breaker of the tested monitoring system substation, stopping the timer, obtaining the power-off duration by the computer, and finishing the test.
10. A method for testing a methane wind power locking function of a coal mine monitoring system by using the device for testing the methane wind power locking function of the coal mine monitoring system according to claim 2 or 6 is characterized by comprising the following steps:
the method comprises the following steps of carrying out methane wind power locking function test on a substation of a monitored monitoring system powered by an alternating current power supply:
step one, selecting a power supply mode of the matched substation of the monitored system through a computer, and selecting one of the following modes: selecting any one of 1.1 times of AC test power supply, 1.0 times of AC test power supply and 0.75 times of AC test power supply in 1140V voltage gear;
or any one of the alternating current test power supply with the voltage level of 660V of 1.1 times, the alternating current test power supply with the voltage level of 1.0 time and the alternating current test power supply with the voltage level of 0.75 time is selected;
or any one of the 1.1 times alternating current test power supply, the 1.0 times alternating current test power supply and the 0.75 times alternating current test power supply of the 127V voltage gear is selected;
setting triggering conditions through a computer, namely setting the concentration of methane gas, and selecting and inputting one of the following data: a. the methane concentration of the tunneling working face is more than or equal to one percent; b. the methane concentration of the backflow wind on the driving face is more than or equal to one percent; c. the concentration of methane in the air flow entering the working face to be tunneled in series is more than or equal to five-zero percent;
and step three, starting the test through a computer, sending a timing instruction to a timer by the analog sensor after the concentration of the methane gas detected by the analog sensor reaches a trigger condition, starting the timer to work, controlling the action of a tested breaker of the tested monitoring system substation after the tested monitoring system substation receives the information that the concentration of the methane gas reaches the trigger condition, sending a timing stopping instruction to the timer after a public control module receives the action feedback of the tested breaker of the tested monitoring system substation, stopping the timer, obtaining the power-off duration by the computer, and finishing the test.
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Address after: 113122 No.11 Binhe Road, Shenfu demonstration area, Fushun City, Liaoning Province Applicant after: Shenyang Research Institute Co.,Ltd. Address before: 113122 No. 11 Binhe Road, Fushun Economic Development Zone, Fushun City, Liaoning Province Applicant before: CCTEG SHENYANG Research Institute |
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