CN112213645A - Line monitoring system for mining storage battery - Google Patents
Line monitoring system for mining storage battery Download PDFInfo
- Publication number
- CN112213645A CN112213645A CN202011079180.9A CN202011079180A CN112213645A CN 112213645 A CN112213645 A CN 112213645A CN 202011079180 A CN202011079180 A CN 202011079180A CN 112213645 A CN112213645 A CN 112213645A
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- storage battery
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- 238000003860 storage Methods 0.000 title claims abstract description 76
- 238000005065 mining Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000003137 locomotive Effects 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 238000005538 encapsulation Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 3
- 230000001052 transient Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 239000003245 coal Substances 0.000 description 11
- 238000004642 transportation engineering Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 230000001702 transmitter Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002093 peripheral Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000817 safety factor Toxicity 0.000 description 1
Classifications
-
- 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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
-
- 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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- 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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Abstract
A line monitoring system for a mining battery, comprising: the single storage battery monitoring wireless transmitting devices are used for acquiring the temperature of a battery shell and acquiring the voltage and the temperature of a lug by utilizing a storage battery pole contact; the one or more receivers are in wireless communication connection with the single storage battery monitoring wireless transmitting devices and are used for acquiring the temperature, the voltage and the lug temperature of the battery shell of each single storage battery monitoring wireless transmitting device; the control box is connected with one or more receivers through a mining explosion-proof signal control cable and used for receiving, processing and storing the temperature, the voltage and the lug temperature of a battery shell from the receivers, displaying and carrying out accident early warning.
Description
Technical Field
The invention relates to the technical field of safety monitoring of coal mine rail electric locomotives, in particular to a mine storage battery wire monitoring system based on a coal mine rail electric locomotive.
Background
In the production process of a coal mine, underground storage battery locomotive transportation is one of important and necessary transportation modes, and the underground storage battery locomotive transportation is not only responsible for transporting underground personnel, but also responsible for important transportation tasks such as underground gangue, materials, equipment and the like, and is directly related to the efficiency and benefit of coal mine production. Meanwhile, the method is also a great hidden danger source for coal mine safety production. According to the statistics of major accident analysis of coal mines in China, mine transportation casualty accidents in China account for about 26% -30% of the total accidents, are arranged at the second place of various personal casualty accidents, and meanwhile, electromechanical transportation accidents are also an important factor causing major accidents such as gas explosion and the like.
In order to eliminate potential safety hazards caused by the temperature of a storage battery and a cable in an abnormal state, the traditional method is to increase the sectional area of the cable to realize the dispersion of transmission energy, but the structure causes that a coal mine underground power supply management system cannot be implemented, and no effective control means exists at present for the storage battery. The intelligent power supply inspection device has no precedent in the underground coal mine at present, and the main reason is that potential safety hazards are easily caused by the connection mode between the transmission energy information and the device, and the safety factor is severe to an absolute degree. However, when an underground electric locomotive runs, a series of problems often occur due to long-time use of a power supply, and the battery box is over-temperature, over-charge, over-discharge and short-circuit, which easily cause damage to the power supply device and reduce the service life, and more importantly, potential safety hazards caused by abnormality of the power supply device.
Disclosure of Invention
The invention provides a line monitoring system for a mining storage battery, which aims to solve at least one technical problem.
To solve the above problems, as one aspect of the present invention, there is provided a line monitoring system of a mining storage battery, including:
the single storage battery monitoring wireless transmitting devices are used for acquiring the temperature of a battery shell and acquiring the voltage and the temperature of a lug by utilizing a storage battery pole contact;
the one or more receivers are in wireless communication connection with the single storage battery monitoring wireless transmitting devices and used for acquiring the temperature, the voltage and the lug temperature of the battery shell of each single storage battery monitoring wireless transmitting device;
the control box is connected with one or more receivers through a mining explosion-proof signal control cable and used for receiving, processing and storing the temperature, the voltage and the lug temperature of a battery shell from the receivers, displaying and performing accident early warning, and comprises a remote wired transmission interface used for being connected with an intelligent charger or an external monitoring system and a remote wireless transmission interface used for being connected with a remote wireless monitoring system.
Preferably, the single storage battery monitoring wireless transmitting device comprises a tab temperature sensor, a voltage sensor, a shell temperature sensor and a first Bluetooth communication module, wherein the tab temperature sensor, the voltage sensor and the shell temperature sensor are connected with the first Bluetooth communication module through isolators.
Preferably, the isolator adopts a metal oxide film resistor as a current-limiting element and a high-efficiency low-voltage difference Schottky diode as an isolating device, and adopts epoxy resin encapsulation and metal material encapsulation, and the tab temperature sensor and the voltage sensor are respectively connected to a positive pole and a negative pole of the storage battery.
Preferably, the receiver includes the controller, be used for with the second bluetooth communication module and the RS485 module of first bluetooth communication module communication, the controller respectively with second bluetooth communication module, RS485 module electricity are connected, the receiver passes through the RS485 module with the control box electricity is connected.
Preferably, the control box comprises a wiring cavity and a control cavity, a BCU-DC type power module, a two-way intrinsically safe power module and a main control board are installed in the control cavity, and the wiring cavity is a wire inlet and outlet cavity for introducing a power supply, a communication cable and an alarm output cable into the power supply device;
the two-way intrinsically safe power supply module comprises a first DC/DC module and a second DC/DC module which are sequentially connected in series, wherein the input of the first DC/DC module is 192V, the output of the first DC/DC module is 24V, the input of the second DC/DC module is 24V, the first path of output 5V intrinsic safety power supply supplies power to the main control board, and the second path of output 18V intrinsic safety power supply is used as a working power supply of an external sound-light alarm device; the input stage of the first DC/DC module is provided with a self-recovery fuse of 0.12A and is used for limiting the working current of the whole machine so as to ensure that the energy output is not out of control under the abnormal condition, and the output stage is provided with a TVS transient suppression diode so as to effectively protect a rear-stage circuit from being damaged by various surge pulses;
the master control board comprises a CPU, a NAND memory, an isolation output interface, an isolation 485 driver, an isolation CAN driver, an LED nixie tube, a LAN driver, a WIFI module, a 485 driver and the like, and CAN be connected with a plurality of receivers through the 485 driver so as to acquire the performance and safety parameter data of the storage battery and store the data into the NAND memory;
the main control board judges the voltage and temperature parameters, and when the voltage value of the single storage battery is greater than 2.5V or less than 1.85V or the temperature value of the battery shell is greater than 40 ℃, an alarm signal is output to remind charging and discharging operations or to remind of cooling treatment; when the temperature of the battery pole is higher than 45 ℃, reminding that the cable connecting bolt is likely to be loosened and needs to be screwed; when the voltage value of the single storage battery is greater than 2.6V or less than 1.75V or the temperature value of the battery shell is greater than 45 ℃, a control signal is output to shut down the operation of the locomotive or stop charging, and the number, the fault type and the parameters of the failed battery are displayed on a nixie tube in the control box in a rolling mode.
In the technical scheme, the single storage battery monitoring wireless transmitting device 1 comprises a mining pouring and intrinsic safety type lead-acid storage battery monitoring signal isolator for acquiring the voltage and the multipoint temperature of each storage battery in a storage battery pack, generating and outwards transmitting a detection signal, and one or more receivers 2 for receiving the data transmitted by the single storage battery monitoring wireless transmitting device 1 and outwards transmitting a sampling signal. Control box 3 collects and saves monomer battery acquisition signal, shows and the early warning of abnormal state, leaves remote data interface RS485, monitoring signal transmission to intelligent charging machine or peripheral monitoring system promptly, has the data access that wireless transmission wifi node realized long-range wireless monitoring system simultaneously, leaves remote data interface RS485 and wireless transmission wifi node promptly, can realize the accurate collection of data and the monitoring when more battery monomer states under the wireless mode.
Drawings
FIG. 1 schematically shows an overall structural view of the present invention;
FIG. 2 is a schematic diagram of a single battery monitoring wireless transmitter;
fig. 3 schematically shows a structural schematic of the receiver;
fig. 4 schematically shows a structural view of the control box.
Reference numbers in the figures: 1. the single storage battery monitoring wireless transmitting device; 2. a receiver; 3. a control box; 4. an isolator; 5. a single storage battery; 6. a tab temperature sensor; 7. a voltage sensor; 8. a housing temperature sensor; 9. a first Bluetooth communication module; 10. a two-way intrinsically safe power module; 11. a main control panel.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
The invention designs a wireless safety inspection system based on a power supply device of a coal mine rail electric locomotive, and aims to solve the problems. As an aspect of the present invention, there is provided a line monitoring system for a mining battery, comprising:
the wireless transmitting device 1 is used for acquiring the temperature of a battery shell and acquiring the voltage and the temperature of a lug by utilizing a pole contact of the storage battery;
one or more receivers 2, which are in wireless communication connection with the plurality of single storage battery monitoring wireless transmitting devices 1, and are used for acquiring the temperature, the voltage and the lug temperature of the battery shell of each single storage battery monitoring wireless transmitting device 1;
and the control box 3 is connected with one or more receivers 2 through a mining explosion-proof signal control cable and is used for receiving, processing and storing the temperature, the voltage and the lug temperature of a battery shell from the receiver, displaying and performing accident early warning, and the control box 3 comprises a remote wired transmission interface used for being connected with an intelligent charger or an external monitoring system and a remote wireless transmission interface used for being connected with a remote wireless monitoring system.
In the technical scheme, the single storage battery monitoring wireless transmitting device 1 comprises a mining pouring and intrinsic safety type lead-acid storage battery monitoring signal isolator for acquiring the voltage and the multipoint temperature of each storage battery in a storage battery pack, generating and outwards transmitting a detection signal, and one or more receivers 2 for receiving the data transmitted by the single storage battery monitoring wireless transmitting device 1 and outwards transmitting a sampling signal. Control box 3 collects and saves monomer battery acquisition signal, shows and the early warning of abnormal state, leaves remote data interface RS485, monitoring signal transmission to intelligent charging machine or peripheral monitoring system promptly, has the data access that wireless transmission wifi node realized long-range wireless monitoring system simultaneously, leaves remote data interface RS485 and wireless transmission wifi node promptly, can realize the accurate collection of data and the monitoring when more battery monomer states under the wireless mode.
The single storage battery monitoring wireless transmitting device 1 is an intrinsically safe device which is allowed to be used in gas and coal dust explosion dangerous environments, is mainly used for collecting storage battery performance and safety parameters of a mining storage battery power supply device, and transmits the storage battery performance and safety parameters to subsequent related devices through Bluetooth wireless signals. Utilize battery utmost point post contact to carry out voltage, temperature parameter real-time collection, monitor battery case temperature, convert voltage, temperature signal analog quantity into digital signal and go out data acquisition wireless transmission through bluetooth transmission module. The number of the single storage battery monitoring wireless transmitting devices 1 is matched with the number of the monitoring storage batteries, and one storage battery is matched and connected with a set of transmitter containing isolators. Preferably, the single battery monitoring wireless transmitter 1 comprises a tab temperature sensor 6, a voltage sensor 7, a housing temperature sensor 8 and a first bluetooth communication module 9, wherein the tab temperature sensor 6, the voltage sensor 7 and the housing temperature sensor 8 are all connected with the first bluetooth communication module 9 through an isolator 4. The single storage battery monitoring wireless transmitting device 1 adopts a single-chip microcomputer data acquisition and Bluetooth wireless transmitting technology, and combines the application of an intrinsic safety explosion-proof technology in coal mine electrical equipment, the product is packaged by a PC flame-retardant plastic shell, the front end of the single storage battery monitoring wireless transmitting device 1 is isolated by intrinsic safety and non-safety equipment and is connected with an KJA2S mining cast storage battery monitoring isolator, and the safety of the storage battery under the condition of possible abnormal working conditions of the single storage battery monitoring wireless transmitting device 1 is guaranteed. The core unit of the single storage battery monitoring wireless transmitting device 1 is a single-chip microprocessor chip, an executive program is installed in a memory inside the single-chip microprocessor chip, and the single-chip microprocessor regularly acquires parameter data and transmits the data through Bluetooth wireless signals.
Preferably, the isolator 4 adopts a metal oxide film resistor as a current limiting element, a high-efficiency low-voltage difference Schottky diode as an isolating device, and adopts epoxy resin encapsulation and metal material encapsulation, so that the structure is simple, safe and reliable. And the tab temperature sensor 6 and the voltage sensor 7 are respectively connected to the positive pole and the negative pole of the storage battery.
Preferably, the receiver 2 includes the controller, be used for with the second bluetooth communication module of 9 communications of first bluetooth communication module and RS485 module, the controller respectively with second bluetooth communication module, RS485 module electricity are connected, the receiver 2 pass through the RS485 module with the control box 3 electricity is connected. The mine intrinsically safe storage battery monitoring receiver is intrinsically safe equipment which is allowed to be used in gas and coal dust explosion dangerous environments, is mainly used for a storage battery performance and safety parameter monitoring system in a power supply device of a mine storage battery locomotive, receives Bluetooth wireless signal data sent by a storage battery monitoring transmitter, and then transmits the Bluetooth wireless signal data to subsequent related equipment through an RS485 interface. The number of the receivers of the power supply device can be one or more according to the requirement of the Bluetooth wireless transmission space. The receiver adopts the singlechip data processing and bluetooth wireless receiving technology, has combined the application of essence safe explosion-proof technique in coal mine electrical equipment, and this product adopts the encapsulation of PC fire-retardant plastic casing, and power, the integrative cable of signal, the wiring is convenient, and the installation is simple. The receiver core unit is a single-chip microprocessor chip, the executive program is installed in a memory inside the receiver core unit, and the single-chip microprocessor receives the Bluetooth wireless signals and transmits data through RS 485.
Preferably, the control box 3 comprises a wiring cavity and a control cavity, a BCU-DC type power module, a two-way intrinsically safe power module 10 and a main control board 11 are installed in the control cavity, and the wiring cavity is a wire inlet and outlet cavity for introducing a power supply, a communication cable and an alarm output cable into the power supply device;
the two-way intrinsically safe power supply module 10 comprises a first DC/DC module and a second DC/DC module which are sequentially connected in series, wherein the input of the first DC/DC module is 192V, the output of the first DC/DC module is 24V, the input of the second DC/DC module is 24V, the first way of output 5V intrinsic safety power supply supplies power to the main control board 11, and the second way of output 18V intrinsic safety power supply is used as a working power supply of the external acousto-optic alarm device 12; the input stage of the first DC/DC module is provided with a self-recovery fuse of 0.12A for limiting the working current of the whole machine so as to ensure that the energy output is not out of control under abnormal conditions, and the output stage is provided with a TVS transient suppression diode so as to effectively protect a rear stage circuit from being damaged by various surge pulses. Like this, the control box power supply inserts from detecting storage battery direct current bus and changes 24V and 5V power supplies through two-stage DC/DC, and the audible-visual annunciator can be connected to the control box externally, leaves remote data interface RS485, and monitoring signal transmission is to intelligent machine or peripheral hardware monitored control system promptly, has the data access that wireless transmission wifi node realized long-range wireless monitored control system simultaneously.
The main control board 11 comprises a CPU, a NAND memory, an isolation output interface, an isolation 485 driver, an isolation CAN driver, an LED nixie tube, a LAN driver, a WIFI module, a 485 driver and the like, and the main control board 11 CAN be connected with a plurality of receivers through the 485 driver to acquire storage battery performance and safety parameter data and store the storage battery performance and safety parameter data into the NAND memory (the storage battery performance and safety parameter data CAN be stored for 1 month, and the storage battery performance and safety parameter data CAN be input first and output first);
the main control board 11 judges the voltage and temperature parameters, and outputs an alarm signal to remind charging and discharging operations or to remind cooling when the voltage value of the single storage battery is greater than 2.5V or less than 1.85V or the temperature value of the battery shell is greater than 40 ℃; when the temperature of the battery pole is higher than 45 ℃, reminding that the cable connecting bolt is likely to be loosened and needs to be screwed; when the voltage value of the single storage battery is greater than 2.6V or less than 1.75V or the temperature value of the battery shell is greater than 45 ℃, a control signal is output to shut down the operation of the locomotive or stop charging, and the number, the fault type and the parameters of the failed battery are displayed on a nixie tube in the control box in a rolling mode.
The wireless monitoring system for the mining storage battery is integrally designed by adopting an explosion-proof type unit, namely an intrinsic safety unit or an explosion-proof and intrinsic safety unit and a pouring and intrinsic safety unit, and a wired connection part is connected by adopting a special explosion-proof type cable.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A line monitoring system for a mining battery, comprising:
the wireless monitoring and transmitting device (1) for the single storage batteries is used for acquiring the temperature of a battery shell and acquiring voltage and tab temperature by utilizing a storage battery post contact;
one or more receivers (2) in wireless communication connection with the plurality of single storage battery monitoring wireless transmitting devices (1) and used for acquiring the temperature, the voltage and the lug temperature of the battery shell of each single storage battery monitoring wireless transmitting device (1);
the control box (3) is connected with one or more receivers (2) through mining explosion-proof signal control cables and used for receiving, processing and storing the temperature, the voltage and the lug temperature of a battery shell from the receivers, displaying and performing accident early warning, and the control box (3) comprises a remote wired transmission interface used for being connected with an intelligent charger or an external monitoring system and a remote wireless transmission interface used for being connected with a remote wireless monitoring system.
2. The on-line monitoring system for the mining storage battery according to claim 1, characterized in that the single storage battery monitoring wireless transmitting device (1) comprises a tab temperature sensor, a voltage sensor, a shell temperature sensor and a first Bluetooth communication module, wherein the tab temperature sensor, the voltage sensor and the shell temperature sensor are all connected with the first Bluetooth communication module through an isolator (4).
3. The on-line monitoring system for the mining storage battery according to claim 2, wherein the isolator (4) adopts a metal oxide film resistor as a current limiting element, a high-efficiency low-voltage difference Schottky diode as an isolating device, epoxy resin encapsulation and metal material encapsulation are adopted, and the tab temperature sensor and the voltage sensor are respectively connected to a positive pole and a negative pole of the storage battery.
4. The line monitoring system of mining storage batteries according to claim 1, characterized in that the receiver (2) comprises a controller, a second bluetooth communication module for communicating with the first bluetooth communication module, and an RS485 module, the controller is electrically connected with the second bluetooth communication module and the RS485 module, respectively, and the receiver (2) is electrically connected with the control box (3) through the RS485 module.
5. The line monitoring system of the mining storage battery according to claim 1, characterized in that the control box (3) comprises a wiring cavity and a control cavity, a BCU-DC type power module, a two-way intrinsically safe power module and a main control board are installed in the control cavity, and the wiring cavity is a wire inlet and outlet cavity for introducing a power supply, a communication cable and an alarm output cable into the power supply device;
the two-way intrinsically safe power supply module comprises a first DC/DC module and a second DC/DC module which are sequentially connected in series, wherein the input of the first DC/DC module is 192V, the output of the first DC/DC module is 24V, the input of the second DC/DC module is 24V, the first path of output 5V intrinsic safety power supply supplies power to the main control board, and the second path of output 18V intrinsic safety power supply is used as a working power supply of an external sound-light alarm device; the input stage of the first DC/DC module is provided with a self-recovery fuse of 0.12A and is used for limiting the working current of the whole machine so as to ensure that the energy output is not out of control under the abnormal condition, and the output stage is provided with a TVS transient suppression diode so as to effectively protect a rear-stage circuit from being damaged by various surge pulses;
the master control board comprises a CPU, a NAND memory, an isolation output interface, an isolation 485 driver, an isolation CAN driver, an LED nixie tube, a LAN driver, a WIFI module, a 485 driver and the like, and CAN be connected with a plurality of receivers through the 485 driver so as to acquire the performance and safety parameter data of the storage battery and store the data into the NAND memory;
the main control board judges the voltage and temperature parameters, and when the voltage value of the single storage battery is greater than 2.5V or less than 1.85V or the temperature value of the battery shell is greater than 40 ℃, an alarm signal is output to remind charging and discharging operations or to remind of cooling treatment; when the temperature of the battery pole is higher than 45 ℃, reminding that the cable connecting bolt is likely to be loosened and needs to be screwed; when the voltage value of the single storage battery is greater than 2.6V or less than 1.75V or the temperature value of the battery shell is greater than 45 ℃, a control signal is output to shut down the operation of the locomotive or stop charging, and the number, the fault type and the parameters of the failed battery are displayed on a nixie tube in the control box in a rolling mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011079180.9A CN112213645A (en) | 2020-10-10 | 2020-10-10 | Line monitoring system for mining storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011079180.9A CN112213645A (en) | 2020-10-10 | 2020-10-10 | Line monitoring system for mining storage battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915429A (en) * | 2021-04-08 | 2021-06-08 | 西安石油大学 | Sound wave fire extinguishing device for oil and gas transmission station |
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- 2020-10-10 CN CN202011079180.9A patent/CN112213645A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915429A (en) * | 2021-04-08 | 2021-06-08 | 西安石油大学 | Sound wave fire extinguishing device for oil and gas transmission station |
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