CN111152662B - Monitoring device for preventing explosion of mining electric vehicle - Google Patents
Monitoring device for preventing explosion of mining electric vehicle Download PDFInfo
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- CN111152662B CN111152662B CN202010123321.6A CN202010123321A CN111152662B CN 111152662 B CN111152662 B CN 111152662B CN 202010123321 A CN202010123321 A CN 202010123321A CN 111152662 B CN111152662 B CN 111152662B
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- 238000005065 mining Methods 0.000 title claims abstract description 44
- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 238000004880 explosion Methods 0.000 title abstract description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 136
- 238000012544 monitoring process Methods 0.000 claims abstract description 70
- 238000005474 detonation Methods 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000010892 electric spark Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
本发明提供一种矿用电动车防引爆瓦斯的监控装置，包括监控主机，分别与监控主机电连接的甲烷变送器、本安显示屏和整车控制器，用于提供电源的车载电源、DC模块和开关电源，用于驱动的包括电动机和电机控制器的电驱动系统，受整车控制器控制用于相应控制电驱动系统和DC模块电源通断的第一电控开关以及第二电控开关，监控主机内置有甲烷浓度超标阈值和甲烷变送器发送信号间断时长阈值。使用时当监控主机判断甲烷浓度超标或者甲烷变送器发送信号时长超阈值时向整车控制器发送动作信号，整车控制器通过第一、第二电控开关自动控制全车断电。本发明能有效解决现有技术中存在的矿用电动车运行过程中可能引起瓦斯爆炸风险的技术问题。
The present invention provides a monitoring device for preventing gas from detonating in mining electric vehicles, comprising a monitoring host, a methane transmitter electrically connected to the monitoring host, an intrinsically safe display screen and a vehicle controller, an on-board power supply, a DC module and a switching power supply for providing power, an electric drive system including a motor and a motor controller for driving, a first electric control switch and a second electric control switch controlled by the vehicle controller for correspondingly controlling the on and off of the power supply of the electric drive system and the DC module, and a methane concentration exceeding standard threshold and a methane transmitter sending signal interruption duration threshold built into the monitoring host. When in use, when the monitoring host determines that the methane concentration exceeds the standard or the methane transmitter sends a signal for a duration exceeding the threshold, an action signal is sent to the vehicle controller, and the vehicle controller automatically controls the whole vehicle to be powered off through the first and second electric control switches. The present invention can effectively solve the technical problem of the risk of gas explosion that may be caused during the operation of mining electric vehicles in the prior art.
Description
技术领域Technical Field
本发明涉及矿用电动车防爆技术领域，具体涉及一种矿用电动车防引爆瓦斯的监控装置。The invention relates to the technical field of explosion-proof of electric mining vehicles, and in particular to a monitoring device for preventing gas from detonating from electric mining vehicles.
背景技术Background Art
众所周知，煤矿尤其是井下防瓦斯爆炸是煤矿企业必需考虑的重中之重的技术问题，瓦斯的主要成分是烷烃，其中甲烷占绝大多数，另有少量的乙烷、丙烷和丁烷等，瓦斯爆炸主要是由空气中甲烷超过一定的浓度，在电火花的触发下引起爆炸。矿用有轨电机车和矿用电动车（主要指胶轮电动车）是煤矿重要的运输设备，由于矿用电动车上设有大量的电气设备，各电气设备之间通过电缆、接头相连接，因此矿用电动车在运行时有可能因电路或电器原因产生电火花，当矿用电动车在运行时环境中甲烷浓度超标时，若矿用电动车产生电火花，则会引起瓦斯爆炸安全事故，造成财产和矿工生命的巨大损失。为防止出现因矿用电动车运行产生电火花造成瓦斯爆炸事故的发生，目前通用的做法是在矿用电动车上设置甲烷变送器用于检测运行环境中的甲烷浓度，甲烷变送器检测信号发送给设于矿用电动车上的监控主机，监控主机判断监测的甲烷浓度是否超标，若超标，则监控主机驱动设于矿用电动车上的声光报警器进行声光报警，并通过设于矿用电动车上且与监控主机相连的本安显示屏实时显示当前运行状态参数及甲烷浓度监测值。目前矿用电动车防引爆瓦斯的监控装置，当监测的甲烷浓度超标时仅提供声光报警用于提醒驾驶员，由驾驶员相应做整车的停电停运处理，其存在的主要问题有：其一，完全依赖于驾驶员的反应，若驾驶员走神疏忽或反应不及时，未及时对整车停电停运，继续运行仍然有可能引起瓦斯爆炸事故；其二，完全依赖于声光报警器的声光报警，若声光报警器在运行中损坏且驾驶员不知道已损坏，继续运行则仍然有可能引起瓦斯爆炸事故；其三，对运行过程中甲烷浓度的监测依赖于甲烷变送器，若甲烷变送器损坏且驾驶员不知道已损坏，继续运行则仍然有可能引起瓦斯爆炸事故；其四，就算驾驶员在声光报警时及时反应直接关闭整车电源，则会造成矿用电动车的电驱动系统在大电流运行状态下直接关电，一方面可能会造成电器损坏，另一方面可能会因电驱动系统中的元器件有可能会产生自激反应产生电火花，引起瓦斯爆炸。因此，研制更为安全可靠的矿用电动车防引爆瓦斯的监控装置，显得十分必要。As we all know, preventing gas explosions in coal mines, especially underground, is a top priority technical issue that coal mining enterprises must consider. The main components of gas are alkanes, of which methane accounts for the vast majority, and there are also small amounts of ethane, propane and butane. Gas explosions are mainly caused by the concentration of methane in the air exceeding a certain level, which is triggered by electric sparks. Mine rail locomotives and mine electric vehicles (mainly rubber-wheeled electric vehicles) are important transportation equipment in coal mines. Since there are a large number of electrical equipment on mine electric vehicles, and the electrical equipment is connected by cables and connectors, mine electric vehicles may generate electric sparks due to circuit or electrical reasons during operation. When the methane concentration in the operating environment of mine electric vehicles exceeds the standard, if mine electric vehicles generate electric sparks, it will cause gas explosion safety accidents, resulting in huge losses of property and miners' lives. In order to prevent gas explosion accidents caused by electric sparks generated by the operation of mining electric vehicles, the current common practice is to install a methane transmitter on the mining electric vehicle to detect the methane concentration in the operating environment. The methane transmitter detection signal is sent to the monitoring host installed on the mining electric vehicle. The monitoring host determines whether the monitored methane concentration exceeds the standard. If it exceeds the standard, the monitoring host drives the sound and light alarm installed on the mining electric vehicle to sound and light alarm, and displays the current operating status parameters and methane concentration monitoring values in real time through the intrinsically safe display screen installed on the mining electric vehicle and connected to the monitoring host. At present, the monitoring device for preventing detonation of gas in mining electric vehicles only provides sound and light alarms to remind the driver when the monitored methane concentration exceeds the standard, and the driver shall shut down the whole vehicle accordingly. The main problems are as follows: first, it is completely dependent on the driver's response. If the driver is distracted or unresponsive, and fails to shut down the whole vehicle in time, the continued operation may still cause a gas explosion accident; second, it is completely dependent on the sound and light alarm of the sound and light alarm. If the sound and light alarm is damaged during operation and the driver does not know that it is damaged, the continued operation may still cause a gas explosion accident; third, the monitoring of methane concentration during operation depends on the methane transmitter. If the methane transmitter is damaged and the driver does not know that it is damaged, the continued operation may still cause a gas explosion accident; fourth, even if the driver responds in time to the sound and light alarm and directly shuts down the power of the whole vehicle, the electric drive system of the mining electric vehicle will be directly shut down in the high current operation state, which may cause damage to the electrical appliances on the one hand, and may cause electric sparks due to self-excitation reactions of components in the electric drive system on the other hand, causing gas explosions. Therefore, it is very necessary to develop a safer and more reliable monitoring device to prevent gas explosion in mining electric vehicles.
发明内容Summary of the invention
本发明的目的是：为解决现有技术中存在的技术问题，提供一种更为安全可靠的矿用电动车防引爆瓦斯的监控装置。The purpose of the present invention is to solve the technical problems existing in the prior art and to provide a safer and more reliable monitoring device for preventing gas from detonating in mining electric vehicles.
本发明的技术方案是：本发明的矿用电动车防引爆瓦斯的监控装置，包括监控主机、甲烷变送器、本安显示屏、整车控制器、车载电源、电驱动系统、DC模块和开关电源，所述电驱动系统包括驱动用的电动机和对电动机实施控制的电机控制器，所述监控主机内置有甲烷浓度超标阈值，其特征在于：还包括第一电控开关以及第二电控开关，所述监控主机还内置有甲烷变送器发送信号间断时长阈值，所述甲烷变送器和整车控制器分别与监控主机通过本安CAN总线双向信号电连接，本安显示屏与监控主机通过本安CAN总线信号电连接，电动机与电机控制器电连接，电机控制器通过第一电控开关与车载电源电连接，电机控制器与整车控制器电连接，第一电控开关和第二电控开关分别与整车控制器电连接，开关电源通过DC模块与第二电控开关电连接，开关电源用于提供监控主机、甲烷变送器以及整车控制器的工作电源。The technical solution of the present invention is: the monitoring device for preventing detonation of gas in mining electric vehicles of the present invention comprises a monitoring host, a methane transmitter, an intrinsically safe display screen, a vehicle controller, an on-board power supply, an electric drive system, a DC module and a switching power supply, wherein the electric drive system comprises a driving motor and a motor controller for controlling the motor, the monitoring host is provided with a methane concentration exceeding standard threshold value, and is characterized in that: it also comprises a first electric control switch and a second electric control switch, the monitoring host is also provided with a methane transmitter sending signal interruption duration threshold value, the methane transmitter and the vehicle controller are respectively electrically connected to the monitoring host through an intrinsically safe CAN bus bidirectional signal, the intrinsically safe display screen is electrically connected to the monitoring host through an intrinsically safe CAN bus signal, the motor is electrically connected to the motor controller, the motor controller is electrically connected to the on-board power supply through the first electric control switch, the motor controller is electrically connected to the vehicle controller, the first electric control switch and the second electric control switch are respectively electrically connected to the vehicle controller, the switching power supply is electrically connected to the second electric control switch through the DC module, and the switching power supply is used to provide working power for the monitoring host, the methane transmitter and the vehicle controller.
进一步的方案是：所述监控主机内置的甲烷变送器发送信号间断时长阈值为4秒。A further solution is that the methane transmitter built into the monitoring host has a signal interruption time threshold of 4 seconds.
进一步的方案是：所述监控主机内置有甲烷浓度超标阈值为5.0VOL%。A further solution is that the monitoring host has a built-in methane concentration exceeding standard threshold of 5.0VOL%.
进一步的方案是：所述第一电控开关和第二电控开关为直流接触器或者为继电器。A further solution is that the first electrically controlled switch and the second electrically controlled switch are DC contactors or relays.
进一步的方案是：所述第一电控开关和第二电控开关为EV200HAANA型号的直流接触器。A further solution is that the first electric-controlled switch and the second electric-controlled switch are EV200HAANA model DC contactors.
进一步的方案是：所述甲烷变送器为GJC4C型号的车载式甲烷传感器。A further solution is that the methane transmitter is a GJC4C vehicle-mounted methane sensor.
进一步的方案是：所述监控主机为ZCB24-Z型号的监控主机。A further solution is: the monitoring host is a monitoring host of the ZCB24-Z model.
进一步的方案是：所述整车控制器优选为ECM-5554-112-0904型号的控制器。A further solution is: the vehicle controller is preferably a controller of model ECM-5554-112-0904.
进一步的方案是：所述本安显示屏为PH12型号的矿用本安型显示屏。A further solution is that the intrinsically safe display screen is a PH12 model intrinsically safe display screen for mining.
本发明具有积极的效果：（1）本发明的矿用电动车防引爆瓦斯的监控装置，其在使用时，若监控主机判断运行环境中甲烷浓度超标，则监控主机发送停电停运指令给整车控制器，整车控制器接受指令后控制第一电控开关动作以断开电驱动系统的高压电源，同时控制第二电控开关动作以断开矿用电动车的低压电源，从而自动切断矿用电动车的全部电源，彻底避免电火花的产生，从而有效解决了现有技术中完全依赖于驾驶员的反应以及声光报警器失灵可能引起瓦斯爆炸事故的技术问题。（2）本发明的矿用电动车防引爆瓦斯的监控装置，其在使用时，若监控主机在设定的时间段内不能接收到甲烷变送器发送的甲烷浓度监测信号，则监控主机判断甲烷工作失灵，监控主机发送停电停运指令自动切断矿用电动车的全部电源，彻底避免电火花的产生，从而有效解决了现有技术中若甲烷变送器损坏且驾驶员不知道已损坏继续运行可能引起瓦斯爆炸事故的技术问题。（3）本发明的矿用电动车防引爆瓦斯的监控装置，其在使用过程中当监控主机判断需要停电停运向整车控制器发送指令时，由整车控制器先行发送指令给电机控制器，先行降低电动机的工作电流，然后再关闭全部电源，从而有效解决了现有技术中由驾驶员直接关电所带来的电驱动系统在大电流运行状态下直接关电可能会造成电器损坏以及自激反应产生电火花引起瓦斯爆炸的技术问题。The present invention has positive effects: (1) The monitoring device for preventing detonation of gas in mining electric vehicles of the present invention, when in use, if the monitoring host determines that the methane concentration in the operating environment exceeds the standard, the monitoring host sends a power-off and shutdown command to the vehicle controller. After receiving the command, the vehicle controller controls the first electric control switch to disconnect the high-voltage power supply of the electric drive system, and controls the second electric control switch to disconnect the low-voltage power supply of the mining electric vehicle, thereby automatically cutting off all power supplies of the mining electric vehicle, completely avoiding the generation of electric sparks, thereby effectively solving the technical problem of the prior art that completely relies on the driver's response and the failure of the sound and light alarm may cause gas explosion accidents. (2) The monitoring device for preventing detonation of gas in mining electric vehicles of the present invention, when in use, if the monitoring host cannot receive the methane concentration monitoring signal sent by the methane transmitter within the set time period, the monitoring host determines that the methane operation fails, and the monitoring host sends a power-off and shutdown command to automatically cut off all power supplies of the mining electric vehicle, completely avoiding the generation of electric sparks, thereby effectively solving the technical problem of the prior art that if the methane transmitter is damaged and the driver does not know that it is damaged and continues to operate, it may cause a gas explosion accident. (3) The monitoring device for preventing the explosion of gas in mining electric vehicles of the present invention, when the monitoring host determines that a power outage is required and sends a command to the vehicle controller during use, the vehicle controller first sends a command to the motor controller to reduce the working current of the motor first, and then shuts down all power supplies, thereby effectively solving the technical problems in the prior art that the electric drive system directly shuts down the power when the driver is operating in a high current state, which may cause damage to the electrical appliances and self-excited reaction to generate electric sparks and cause gas explosions.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明的电路结构示意框图。FIG1 is a schematic block diagram of the circuit structure of the present invention.
具体实施方式DETAILED DESCRIPTION
下面结合附图和具体实施方式对本发明作进一步详细的说明。The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
（实施例1）(Example 1)
见图1，本实施例的见图1，本实施例的矿用电动车防引爆瓦斯的监控装置，其主要由监控主机、甲烷变送器、本安显示屏、整车控制器、车载电源、电驱动系统、DC模块、开关电源、第一电控开关以及第二电控开关组成。电驱动系统包括驱动用的电动机和对电动机实施控制的电机控制器。See Figure 1, the monitoring device for preventing gas explosion of mining electric vehicles of this embodiment is mainly composed of a monitoring host, a methane transmitter, an intrinsically safe display screen, a vehicle controller, an on-board 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 a driving motor and a motor controller for controlling the motor.
甲烷变送器和整车控制器分别与监控主机通过本安CAN总线双向信号电连接，本安显示屏与监控主机通过本安CAN总线信号电连接，电动机与电机控制器电连接，电机控制器通过第一电控开关与车载电源电连接，电机控制器与整车控制器电连接，第一电控开关和第二电控开关分别与整车控制器电连接，开关电源通过DC模块与第二电控开关电连接，开关电源用于提供监控主机、甲烷变送器以及整车控制器的工作电源。The methane transmitter and the vehicle controller are respectively electrically connected to the monitoring host through the intrinsically safe CAN bus bidirectional signal, the intrinsically safe display screen is electrically connected to the monitoring host through the intrinsically safe CAN bus signal, the motor is electrically connected to the motor controller, the motor controller is electrically connected to the vehicle power supply through the first electronic control switch, the motor controller is electrically connected to the vehicle controller, the first electronic control switch and the second electronic control switch are respectively electrically connected to the vehicle controller, the switching power supply is electrically connected to the second electronic control switch through the DC module, and the switching power supply is used to provide working power for the monitoring host, the methane transmitter and the vehicle controller.
甲烷变送器优选采用GJC4C型号的车载式甲烷传感器，甲烷变送器用于实时监测矿用电动车运行环境中的甲烷浓度。The methane transmitter preferably adopts the GJC4C vehicle-mounted methane sensor, which is used to monitor the methane concentration in the operating environment of the mining electric vehicle in real time.
监控主机采用型号为ZCB24-Z的市购监控主机，监控主机内置甲烷浓度超标阈值和甲烷变送器发送信号间断时长阈值，使用时，监控主机实时接收甲烷变送器监测发送的运行环境中甲烷浓度值并将其与内置的甲烷浓度超标阈值进行比较，若判断甲烷浓度超标则监控主机向整车控制器发送控制信号。监控主机实时监控未发送监测信号的时长，若甲烷变送器未发送监测信号的时长超过甲烷变送器发送信号间断时长阈值，则监控主机向整车控制器发送控制信号。本实施例中，甲烷浓度超标阈值优选为5.0VOL%，甲烷变送器发送信号间断时长阈值优选为4秒。监控主机所涉及的程序为简单成熟的现有技术，不作详述。The monitoring host uses a commercially available monitoring host of model ZCB24-Z. The monitoring host has built-in methane concentration exceeding standard threshold and methane transmitter signal interruption duration threshold. When in use, the monitoring host receives the methane concentration value in the operating environment monitored and sent by the methane transmitter in real time and compares it with the built-in methane concentration exceeding standard threshold. If the methane concentration is judged to be exceeding standard, the monitoring host sends a control signal to the vehicle controller. The monitoring host monitors the duration of the failure to send a monitoring signal in real time. If the duration of the failure to send a monitoring signal by the methane transmitter exceeds the methane transmitter signal interruption duration threshold, the monitoring host sends a control signal to the vehicle controller. In this embodiment, the methane concentration exceeding standard threshold is preferably 5.0VOL%, and the methane transmitter signal interruption duration threshold is preferably 4 seconds. The procedures involved in the monitoring host are simple and mature existing technologies and are not described in detail.
本安显示屏优选采用PH12型号的矿用本安型显示屏，本安显示屏用于实时显示监控主机发送的信号参数。The intrinsically safe display screen preferably adopts the PH12 model of mining intrinsically safe display screen, which is used to display the signal parameters sent by the monitoring host in real time.
整车控制器优选采用ECM-5554-112-0904的控制器，整车控制器用于根据监控主机的控制指令，对全车的电源实施开关控制。整车控制器的控制方法为成熟的现有技术，不作详述。The vehicle controller preferably adopts the controller of ECM-5554-112-0904, and the vehicle controller is used to implement switch control of the power supply of the whole vehicle according to the control instruction of the monitoring host. The control method of the vehicle controller is a mature existing technology and will not be described in detail.
车载电源用于提供矿用电动车运行所需要的高压直流电，车载电源为成熟的现有技术，其结构不作详述。The on-board power supply is used to provide the high-voltage direct current required for the operation of mining electric vehicles. The on-board power supply is a mature existing technology and its structure will not be described in detail.
电驱动系统的电机控制器用于根据外部指令通过调节电动机运行电流对电动机的速度快慢实施控制，其为成熟的现有技术，不作详述，本实施例中，当整车控制器接收到监控主机发送的动作指令时，由整车控制器发送降低运行电流的指令给电机控制器，电机控制器根据指令降低电动机运行电流至电机控制器内置的安全阈值。The motor controller of the electric drive system is used to control the speed of the motor by adjusting the motor running current according to external instructions. It is a mature existing technology and will not be described in detail. In this embodiment, when the vehicle controller receives an action instruction sent by the monitoring host, the vehicle controller sends an instruction to reduce the running current to the motor controller, and the motor controller reduces the motor running current to the safety threshold built into the motor controller according to the instruction.
DC模块优选采用深圳市蓝德汽车电源技术有限公司的M333-3K型号的DC模块，DC模块用于将车载电源输出的高压直流电转换为低压直流电以给开关电源供电。The DC module preferably adopts the M333-3K model DC module of Shenzhen Lande Automotive Power Technology Co., Ltd. The DC module is used to convert the high-voltage direct current output by the vehicle power supply into low-voltage direct current to power the switching power supply.
开关电源优选采用MCDX-IB型号的本质安全型电源，开关电源用于将DC模块输出的DC24V转换成DC12V电源，给监控主机、甲烷变送器以及整车控制器提供工作电源。The switching power supply preferably adopts the intrinsically safe power supply of the MCDX-IB model. The switching power supply is used to convert the DC24V output of the DC module into a DC12V power supply to provide working power for the monitoring host, methane transmitter and vehicle controller.
第一电控开关和第二电控开关可采用市购的接触器，也可采用市购的继电器，优选地，第一电控开关和第二电控开关采用EV200HAANA型号的直流接触器。第一电控开关用于根据整车控制器的指令打开或关闭电驱动系统的电源，第二电控开关用于根据整车控制器的指令打开或关闭打开或关闭车载电源向DC模块的电源输出。当监控主机判断甲烷浓度超标向整车控制器发出动作指令后，整车控制器控制第一电控开关和第二电控开关动作，关闭全车电源。The first electric control switch and the second electric control switch can use commercially available contactors or commercially available relays. Preferably, the first electric control switch and the second electric control switch use EV200HAANA DC contactors. The first electric control switch is used to turn on or off the power supply of the electric drive system according to the instructions of the vehicle controller, and the second electric control switch is used to turn on or off the power output of the vehicle power supply to the DC module according to the instructions of the vehicle controller. When the monitoring host determines 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 operate and turn off the power supply of the entire vehicle.
由前述可知，本实施例的矿用电动车防引爆瓦斯的监控装置，其在使用时，若监控主机判断运行环境中甲烷浓度超标，则监控主机发送停电停运指令给整车控制器，整车控制器接受指令后控制第一电控开关动作以断开电驱动系统的高压电源，同时控制第二电控开关动作以断开矿用电动车的低压电源，从而自动切断矿用电动车的全部电源，彻底避免电火花的产生，从而有效解决了现有技术中完全依赖于驾驶员的反应以及声光报警器失灵可能引起瓦斯爆炸事故的技术问题；同时，若监控主机在设定的时间段内不能接收到甲烷变送器发送的甲烷浓度监测信号，则监控主机判断甲烷工作失灵，监控主机发送停电停运指令自动切断矿用电动车的全部电源，彻底避免电火花的产生，从而有效解决了现有技术中若甲烷变送器损坏且驾驶员不知道已损坏继续运行可能引起瓦斯爆炸事故的技术问题；此外，当监控主机判断需要停电停运向整车控制器发送指令时，由整车控制器先行发送指令给电机控制器，先行降低电动机的工作电流，然后再关闭全部电源，从而有效解决了现有技术中由驾驶员直接关电所带来的电驱动系统在大电流运行状态下直接关电可能会造成电器损坏以及自激反应产生电火花引起瓦斯爆炸的技术问题。As can be seen from the foregoing, the monitoring device for preventing detonation of gas in mining electric vehicles of this embodiment, when in use, if the monitoring host determines that the methane concentration in the operating environment exceeds the standard, the monitoring host sends a power-off and shutdown command to the vehicle controller. After receiving the command, the vehicle controller controls the first electric control switch to disconnect the high-voltage power supply of the electric drive system, and at the same time controls the second electric control switch to disconnect the low-voltage power supply of the mining electric vehicle, thereby automatically cutting off all power supplies of the mining electric vehicle and completely avoiding the generation of electric sparks, thereby effectively solving the technical problems in the prior art that the gas explosion accident may be caused by completely relying on the driver's response and the failure of the sound and light alarm; at the same time, if the monitoring host cannot receive the methane concentration monitoring signal sent by the methane transmitter within the set time period, The monitoring host determines that the methane operation has failed, and the monitoring host sends a power-off and shutdown command to automatically cut off all power supplies to the mining electric vehicle, completely avoiding the generation of electric sparks, thereby effectively solving the technical problem in the prior art that if the methane transmitter is damaged and the driver does not know that it is damaged and continues to operate, a gas explosion may occur; in addition, when the monitoring host determines that a power outage is required and sends a command to the vehicle controller, the vehicle controller first sends a command to the motor controller to reduce the working current of the motor first, and then turns off all power supplies, thereby effectively solving the technical problem in the prior art that the electric drive system directly shuts down when the driver directly shuts down the power under high current operation state, which may cause damage to the electrical appliances and self-excited reaction to generate sparks and cause gas explosions.
以上实施例是对本发明的具体实施方式的说明，而非对本发明的限制，有关技术领域的技术人员在不脱离本发明的精神和范围的情况下，还可以做出各种变换和变化而得到相对应的等同的技术方案，因此所有等同的技术方案均应该归入本发明的专利保护范围。The above embodiments are descriptions of specific implementation methods of the present invention rather than limitations of the present invention. Technical personnel in the relevant technical field can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.
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