CN111152662A - Monitoring device for preventing mine electric vehicle from igniting gas - Google Patents
Monitoring device for preventing mine electric vehicle from igniting gas Download PDFInfo
- Publication number
- CN111152662A CN111152662A CN202010123321.6A CN202010123321A CN111152662A CN 111152662 A CN111152662 A CN 111152662A CN 202010123321 A CN202010123321 A CN 202010123321A CN 111152662 A CN111152662 A CN 111152662A
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- methane
- monitoring host
- vehicle
- electric
- monitoring device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides a monitoring device for preventing gas detonation of a mining electric vehicle, which comprises a monitoring host, a methane transmitter, an intrinsic safety display screen and a whole vehicle controller, wherein the methane transmitter, the intrinsic safety display screen and the whole vehicle controller are respectively electrically connected with the monitoring host, a vehicle-mounted power supply, a DC module and a switching power supply are used for providing power supplies, an electric driving system comprising a motor and a motor controller is used for driving, a first electric control switch and a second electric control switch are controlled by the whole vehicle controller and are used for correspondingly controlling the on-off of the power supplies of the electric driving system and the DC module, and a methane concentration standard exceeding threshold value and a methane transmitter sending. When the monitoring host judges that the methane concentration exceeds the standard or the time length of the signal sent by the methane transmitter exceeds the threshold value, the monitoring host sends an action signal to the vehicle control unit, and the vehicle control unit automatically controls the power failure of the whole vehicle through the first electric control switch and the second electric control switch. The invention can effectively solve the technical problem that the mine electric vehicle in the prior art can cause gas explosion risk in the running process.
Description
Technical Field
The invention relates to the technical field of explosion prevention of mining electric vehicles, in particular to a monitoring device for preventing gas detonation of a mining electric vehicle.
Background
It is known that coal mines, especially underground gas explosion prevention, is a serious technical problem that must be considered by coal mine enterprises, the main component of gas is alkane, wherein methane accounts for most of the gas, and a small amount of ethane, propane, butane and the like exist in the gas, and the gas explosion is mainly caused by that methane in air exceeds a certain concentration and is triggered by electric sparks. The mining electric rail locomotive and the mining electric vehicle (mainly rubber wheel electric vehicle) are important transportation equipment for a coal mine, and a large number of electric devices are arranged on the mining electric vehicle and are connected through cables and joints, so that electric sparks are possibly generated due to circuits or electric appliances when the mining electric vehicle runs, and when the methane concentration of the mining electric vehicle exceeds the standard in a running environment, gas explosion safety accidents can be caused if the mining electric vehicle generates the electric sparks, and huge losses of property and lives of miners are caused. In order to prevent gas explosion accidents caused by electric sparks generated during the operation of the mining electric vehicle, the current general method is that a methane transmitter is arranged on the mining electric vehicle and used for detecting the methane concentration in the operation environment, a detection signal of the methane transmitter is sent to a monitoring host arranged on the mining electric vehicle, the monitoring host judges whether the monitored methane concentration exceeds the standard or not, if the monitored methane concentration exceeds the standard, the monitoring host drives an audible and visual alarm arranged on the mining electric vehicle to perform audible and visual alarm, and an intrinsic safety display screen which is arranged on the mining electric vehicle and connected with the monitoring host displays the current operation state parameters and the methane concentration monitoring value in real time. At present mining electric motor car prevents detonating monitoring device of gas, only provides audible-visual alarm and is used for reminding the driver when the methane concentration of monitoring exceeds standard, does the power failure outage of putting in order the car by the driver is handled correspondingly, and its main problem that exists has: firstly, the system completely depends on the reaction of a driver, if the driver is negligent or the reaction is not timely, the power is cut off and the operation of the whole vehicle is not timely stopped, and the gas explosion accident can still be caused by continuous operation; secondly, the audible and visual alarm is completely relied on, if the audible and visual alarm is damaged in the running process and a driver does not know that the audible and visual alarm is damaged, the gas explosion accident can still be caused if the audible and visual alarm is continuously operated; thirdly, monitoring the methane concentration in the operation process depends on the methane transmitter, and if the methane transmitter is damaged and a driver does not know that the methane transmitter is damaged, gas explosion accidents can still be caused if the methane transmitter is continuously operated; and fourthly, even if a driver timely reacts to directly turn off the power supply of the whole vehicle in the audible and visual alarm, the electric drive system of the mining electric vehicle is directly powered off in a high-current running state, on one hand, electric appliances can be damaged, and on the other hand, self-excitation reaction can possibly be generated due to components in the electric drive system to generate electric sparks, so that gas explosion is caused. Therefore, it is necessary to develop a safer and more reliable monitoring device for preventing gas detonation of the mining electric vehicle.
Disclosure of Invention
The purpose of the invention is: in order to solve the technical problems in the prior art, the monitoring device for preventing the mining electric vehicle from igniting the gas is safer and more reliable.
The technical scheme of the invention is as follows: the invention discloses a monitoring device for preventing gas detonation of a mining electric vehicle, which comprises a monitoring host, a methane transmitter, an intrinsic safety display screen, a vehicle controller, a vehicle-mounted power supply, an electric driving system, a DC module and a switching power supply, wherein the electric driving system comprises a motor for driving and a motor controller for controlling the motor, and a methane concentration standard exceeding threshold value is arranged in the monitoring host, and the monitoring device is characterized in that: still include first automatically controlled switch and second automatically controlled switch, the monitoring host computer still embeds there is the long threshold value of length of sending signal discontinuity of methane changer, methane changer and vehicle control unit are connected through this ampere of CAN bus bidirectional signal electricity with the monitoring host computer respectively, this ampere of display screen is connected through this ampere of CAN bus signal electricity with the monitoring host computer, the motor is connected with the machine controller electricity, machine controller is connected with vehicle mounted power source electricity through first automatically controlled switch, machine controller is connected with vehicle control unit electricity, first automatically controlled switch and second automatically controlled switch are connected with vehicle control unit electricity respectively, switching power source is connected with second automatically controlled switch electricity through the DC module, switching power source is used for providing the working power supply of monitoring host computer, methane changer and vehicle control unit.
The further scheme is as follows: and the break time length threshold of a signal sent by a methane transmitter arranged in the monitoring host is 4 seconds.
The further scheme is as follows: the monitoring host is internally provided with a methane concentration standard exceeding threshold value of 5.0 VOL%.
The further scheme is as follows: the first electric control switch and the second electric control switch are direct current contactors or relays.
The further scheme is as follows: the first electric control switch and the second electric control switch are direct current contactors of EV200HAANA type.
The further scheme is as follows: the methane transmitter is a vehicle-mounted methane sensor of GJC4C type.
The further scheme is as follows: the monitoring host is a ZCB24-Z monitoring host.
The further scheme is as follows: the vehicle control unit is preferably an ECM-5554-112-0904 controller.
The further scheme is as follows: the intrinsically safe display screen is a PH12 type mining intrinsically safe display screen.
The invention has the positive effects that: (1) when the monitoring device for preventing the mining electric vehicle from igniting gas is used, if the monitoring host judges that the concentration of methane in the operation environment exceeds the standard, the monitoring host sends a power failure and outage instruction to the vehicle control unit, the vehicle control unit receives the instruction and then controls the first electric control switch to act so as to disconnect the high-voltage power supply of the electric drive system, and controls the second electric control switch to act so as to disconnect the low-voltage power supply of the mining electric vehicle, so that all power supplies of the mining electric vehicle are automatically disconnected, electric sparks are thoroughly avoided, and the technical problem that gas explosion accidents are possibly caused by the fact that the monitoring host completely depends on the reaction of a driver and the failure of an audible and visual alarm in the prior art is effectively. (2) When the monitoring device for preventing the mining electric vehicle from igniting the gas is used, if the monitoring host cannot receive a methane concentration monitoring signal sent by the methane transmitter within a set time period, the monitoring host judges that the methane works abnormally, and sends a power failure and shutdown instruction to automatically cut off all power supplies of the mining electric vehicle, so that the generation of electric sparks is completely avoided, and the technical problem that gas explosion accidents are possibly caused if the methane transmitter is damaged and a driver does not know that the methane transmitter is damaged and continues to operate in the prior art is effectively solved. (3) The invention discloses a monitoring device for preventing gas from being detonated by a mining electric vehicle, which is characterized in that when a monitoring host judges that power failure and shutdown are needed to send an instruction to a vehicle control unit in the use process, the vehicle control unit sends the instruction to a motor controller in advance, the working current of a motor is reduced in advance, and then all power supplies are turned off, so that the technical problems that in the prior art, the electric driving system is directly turned off under the high-current running state by a driver, the electric appliance is possibly damaged, and electric sparks are generated in the self-excitation reaction to cause gas explosion are effectively solved.
Drawings
Fig. 1 is a schematic block diagram of the circuit structure of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(example 1)
Referring to fig. 1, the monitoring device for preventing gas from being detonated of the mining electric vehicle in the embodiment is mainly composed of a monitoring host, a methane transmitter, an intrinsically safe display screen, a vehicle control unit, a vehicle-mounted power supply, an electric drive system, a DC module, a switching power supply, a first electric control switch and a second electric control switch. The electric drive system includes an electric motor for driving and a motor controller for controlling the electric motor.
The methane transmitter and the vehicle control unit are respectively electrically connected with the monitoring host through an intrinsic safety CAN bus bidirectional signal, the intrinsic safety display screen is electrically connected with the monitoring host through an intrinsic safety CAN bus signal, the motor is electrically connected with the motor controller, the motor controller is electrically connected with the vehicle-mounted power supply through a first electric control switch, the motor controller is electrically connected with the vehicle control unit, the first electric control switch and a second electric control switch are respectively electrically connected with the vehicle control unit, the switching power supply is electrically connected with the second electric control switch through a DC module, and the switching power supply is used for providing a working power supply for the monitoring host, the methane transmitter and the vehicle control unit.
The methane transmitter preferably adopts a vehicle-mounted methane sensor of GJC4C model, and is used for monitoring the methane concentration in the running environment of the mining electric vehicle in real time.
The monitoring host machine is a commercially available monitoring host machine with the model number of ZCB24-Z, a methane concentration exceeding threshold value and a signal interruption time length threshold value sent by a methane transmitter are built in the monitoring host machine, when the monitoring host machine is used, the monitoring host machine receives the methane concentration value in the running environment monitored and sent by the methane transmitter in real time and compares the methane concentration value with the built-in methane concentration exceeding threshold value, and if the methane concentration is judged to exceed the standard, the monitoring host machine sends a control signal to the whole vehicle controller. The monitoring host monitors the duration of the monitoring signal which is not sent in real time, and if the duration of the monitoring signal which is not sent by the methane transmitter exceeds the discontinuous duration threshold of the signal sent by the methane transmitter, the monitoring host sends a control signal to the whole vehicle controller. In this embodiment, the exceeding threshold of the methane concentration is preferably 5.0VOL%, and the time interval threshold of the signal transmission interruption of the methane transmitter is preferably 4 seconds. The program involved in the monitoring host is a simple and mature prior art and is not described in detail.
The intrinsic safety display screen preferably adopts a PH12 type mining intrinsic safety display screen, and is used for displaying signal parameters sent by the monitoring host in real time.
The vehicle control unit preferably adopts a controller of ECM-5554-112-0904, and is used for performing on-off control on the power supply of the vehicle according to the control command of the monitoring host. The control method of the vehicle control unit is mature prior art and is not detailed.
The vehicle-mounted power supply is used for providing high-voltage direct current required by the operation of the mining electric vehicle, is mature in the prior art, and is not detailed in structure.
In the embodiment, when the vehicle control unit receives an action command sent by the monitoring host, the vehicle control unit sends a command for reducing the running current to the motor controller, and the motor controller reduces the running current of the motor to a safety threshold value built in the motor controller according to the command.
The DC module preferably adopts Shenzhen market blueFrom De automotive Power technologies LtdM333-3K modelThe DC module is used for converting high-voltage direct current output by the vehicle-mounted power supply into low-voltage direct current to supply power to the switching power supply.
The switching power supply is preferably an intrinsically safe power supply of an MCDX-IB model, and is used for converting DC24V output by the DC module into DC12V power supply and providing working power supply for the monitoring host, the methane transmitter and the vehicle controller.
The first electric control switch and the second electric control switch can adopt a commercially available contactor and a commercially available relay, and preferably, the first electric control switch and the second electric control switch adopt a direct current contactor of EV200HAANA type. The first electric control switch is used for turning on or turning off the power supply of the electric drive system according to the instruction of the vehicle controller, and the second electric control switch is used for turning on or turning off the power supply output from the vehicle-mounted power supply to the DC module according to the instruction of the vehicle controller. And when the monitoring host judges that the methane concentration exceeds the standard and sends an action instruction to the vehicle controller, the vehicle controller controls the first electric control switch and the second electric control switch to act, and the power supply of the whole vehicle is turned off.
According to the monitoring device for preventing the mining electric vehicle from igniting the gas, when the monitoring device is used, if the monitoring host judges that the concentration of methane in the operation environment exceeds the standard, the monitoring host sends a power failure and outage instruction to the vehicle control unit, the vehicle control unit receives the instruction and then controls the first electric control switch to act so as to disconnect the high-voltage power supply of the electric drive system, and controls the second electric control switch to act so as to disconnect the low-voltage power supply of the mining electric vehicle, so that all power supplies of the mining electric vehicle are automatically cut off, the generation of electric sparks is thoroughly avoided, and the technical problems that the gas explosion accident can be caused by the fact that the monitoring host completely depends on the reaction of a driver and the failure of the audible and; meanwhile, if the monitoring host cannot receive a methane concentration monitoring signal sent by the methane transmitter within a set time period, the monitoring host judges that the methane works abnormally, and sends a power failure and outage instruction to automatically cut off all power supplies of the mining electric vehicle, so that the generation of electric sparks is thoroughly avoided, and the technical problem that gas explosion accidents are possibly caused if the methane transmitter is damaged and a driver does not know that the methane transmitter is damaged and continues to operate in the prior art is effectively solved; in addition, when the monitoring host judges that the power failure and the shutdown are needed to send the instruction to the vehicle control unit, the vehicle control unit sends the instruction to the motor controller in advance, the working current of the motor is reduced in advance, and then all power supplies are turned off, so that the technical problems that in the prior art, the electric appliance damage can be caused by the fact that the electric driving system is directly turned off under the large-current running state and the gas explosion is caused by electric sparks generated in the self-excitation reaction due to the fact that a driver directly turns off the power supply are solved.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a monitoring device of mining electric motor car anti-detonation gas, includes monitoring host, methane changer, this ampere of display screen, vehicle control unit, vehicle mounted power, electric drive system, DC module and switching power supply, electric drive system is including the motor that drives and the machine controller who implements control to the motor, monitoring host embeds there is methane concentration threshold value that exceeds standard, its characterized in that: still include first automatically controlled switch and second automatically controlled switch, the monitoring host computer still embeds there is the long threshold value of length of sending signal discontinuity of methane changer, methane changer and vehicle control unit are connected through this ampere of CAN bus bidirectional signal electricity with the monitoring host computer respectively, this ampere of display screen is connected through this ampere of CAN bus signal electricity with the monitoring host computer, the motor is connected with the machine controller electricity, machine controller is connected with vehicle mounted power source electricity through first automatically controlled switch, machine controller is connected with vehicle control unit electricity, first automatically controlled switch and second automatically controlled switch are connected with vehicle control unit electricity respectively, switching power source is connected with second automatically controlled switch electricity through the DC module, switching power source is used for providing the working power supply of monitoring host computer, methane changer and vehicle control unit.
2. The monitoring device for preventing gas detonation of the mining electric vehicle according to claim 1, is characterized in that: and the break time length threshold of a signal sent by a methane transmitter arranged in the monitoring host is 4 seconds.
3. The monitoring device for preventing gas detonation of the mining electric vehicle according to claim 1, is characterized in that: the monitoring host is internally provided with a methane concentration standard exceeding threshold value of 5.0 VOL%.
4. The monitoring device for preventing gas detonation of the mining electric vehicle according to claim 1, is characterized in that: the first electric control switch and the second electric control switch are direct current contactors or relays.
5. The monitoring device for preventing gas detonation of the mining electric vehicle as claimed in claim 4, wherein: the first electric control switch and the second electric control switch are direct current contactors of EV200HAANA type.
6. The monitoring device for preventing gas detonation of the mining electric vehicle according to any one of claims 1-4, is characterized in that: the methane transmitter is a vehicle-mounted methane sensor of GJC4C type.
7. The monitoring device for preventing gas detonation of the mining electric vehicle according to any one of claims 1-4, is characterized in that: the monitoring host is a ZCB24-Z monitoring host.
8. The monitoring device for preventing gas detonation of the mining electric vehicle according to any one of claims 1-4, is characterized in that: the vehicle control unit is preferably an ECM-5554-112-0904 controller.
9. The monitoring device for preventing gas detonation of the mining electric vehicle according to any one of claims 1-4, is characterized in that: the intrinsically safe display screen is a PH12 type mining intrinsically safe display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010123321.6A CN111152662A (en) | 2020-02-27 | 2020-02-27 | Monitoring device for preventing mine electric vehicle from igniting gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010123321.6A CN111152662A (en) | 2020-02-27 | 2020-02-27 | Monitoring device for preventing mine electric vehicle from igniting gas |
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| Publication Number | Publication Date |
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| CN111152662A true CN111152662A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010123321.6A Pending CN111152662A (en) | 2020-02-27 | 2020-02-27 | Monitoring device for preventing mine electric vehicle from igniting gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111976491A (en) * | 2020-08-27 | 2020-11-24 | 内蒙古莱拓汽车科技有限公司 | Safety protection system of trackless rubber-tyred vehicle |
| CN112394635A (en) * | 2020-09-30 | 2021-02-23 | 中国煤炭科工集团太原研究院有限公司 | High-redundancy multi-stage safety protection device of trackless auxiliary transportation robot for coal mine |
-
2020
- 2020-02-27 CN CN202010123321.6A patent/CN111152662A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111976491A (en) * | 2020-08-27 | 2020-11-24 | 内蒙古莱拓汽车科技有限公司 | Safety protection system of trackless rubber-tyred vehicle |
| CN112394635A (en) * | 2020-09-30 | 2021-02-23 | 中国煤炭科工集团太原研究院有限公司 | High-redundancy multi-stage safety protection device of trackless auxiliary transportation robot for coal mine |
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