CN211928014U - Mine stray current detector - Google Patents
Mine stray current detector Download PDFInfo
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- CN211928014U CN211928014U CN201922433489.2U CN201922433489U CN211928014U CN 211928014 U CN211928014 U CN 211928014U CN 201922433489 U CN201922433489 U CN 201922433489U CN 211928014 U CN211928014 U CN 211928014U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 9
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- 238000004458 analytical method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
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Abstract
A mine stray current detector is characterized in that a main control board (3) is arranged in an inner cavity of a detection host, a central processing unit (4) for processing data, a data storage (5) for storing the data, and a current signal amplification module (6) for amplifying weak stray current signals are arranged on the main control board, gather AD acquisition module (7) of stray current signal after enlargiing, display module (8) and ethernet transmission module (9) for the display data, high-frequency current transformer (10) on the power cable are connected to the input of current signal amplification module, AD acquisition module is connected to the output of current signal amplification module, central processing unit is connected to AD acquisition module's output, central processing unit connects data memory respectively, display module, central processing unit passes through ethernet transmission module and connects remote monitoring terminal (11). The detector can effectively improve the anti-interference capability of analog signals and improve the detection efficiency.
Description
Technical Field
The utility model relates to a current detector specifically is a mine stray current detector belongs to stray current monitoring technology field.
Background
In the colliery underground transportation tunnel, still laid high tension cable, tuber pipe and water pipe except overhead line and track, these pipelines are all made by metal material, because big tunnel of underground transportation is very moist, water is polyacid again, even there is not stray current to exist, the corruption of metal is also very serious, and the pipeline in these big tunnels of underground transportation is stray current's good passageway, when having stray current to pass through in the pipeline, the metal corrodes the degree the bigger, and speed is faster. A large number of uncertain non-safety factors exist in the areas, real-time monitoring of the underground environment is not facilitated, and the randomness of the stray current needs to be effectively evaluated through continuous observation. Therefore, the underground stray current of the coal mine and the prevention and treatment problems thereof are always valued by people.
In the prior art, after the stray current acquisition device acquires a corresponding electric signal, the electric signal is sent to a background system for storage and analysis through an RS485 interface, various electromagnetic interference problems cannot be solved by electric communication, and the detection efficiency is generally low.
Disclosure of Invention
Problem to above-mentioned prior art exists, the utility model provides a mine stray current detector, this detector can effectively improve analog signal's interference killing feature, improves detection efficiency.
In order to realize the purpose, the utility model discloses a technical scheme is: a mine stray current detector comprises a detection host, a data transmission interface for data transmission is arranged at one side of the detection host, the inner cavity of the detection host is provided with a main control board, the main control board is provided with a central processing unit for processing data, a data memory for storing the data, a current signal amplification module for amplifying weak stray current signals, an AD acquisition module for acquiring the amplified stray current signals, a display module for displaying the data and an Ethernet transmission module, the input of the current signal amplification module is connected with a high-frequency current transformer on the power cable, the output of the current signal amplification module is connected with the AD acquisition module, the output of the AD acquisition module is connected with the central processing unit, the central processing unit is respectively connected with the data storage and the display module, and the central processing unit is connected with the remote monitoring terminal through the Ethernet transmission module.
The central processing unit adopts an STM32F407 chip.
The Ethernet transmission module consists of a central processing unit with an Ethernet module and an external PHY chip, and the model of the external PHY chip is DP83848 CVVX.
The current signal amplification module comprises an operational amplifier U13A, an operational amplifier U13B and an operational amplifier U13C, wherein the operational amplifier U13A is a voltage follower; the operational amplifier U13C is a first-stage non-inverting amplifier, and the input end of the operational amplifier U13C is connected with the output end of the operational amplifier U13A; the operational amplifier U13B is a second-stage non-inverting amplifier, the input end of the operational amplifier U13B is connected with the output end of the operational amplifier U13C, and the output end of the operational amplifier U13B is connected with the AD acquisition module.
The operational amplifier U13A, the operational amplifier U13B and the operational amplifier U13C are all model numbers OP 4177.
The AD acquisition module adopts an AD7685BRMZRL7 chip.
Compared with the prior art, a data transmission interface for data transmission is arranged at one side of the detection host machine of the utility model, the inner cavity of the detection host is provided with a main control board, the main control board is provided with a central processing unit, a data memory, a current signal amplification module, an AD acquisition module, a display module and an Ethernet transmission module, the input end of the current signal amplification module is connected with a high-frequency current transformer on a power cable, the AD acquisition module is used for amplifying weak stray current signals and the AD acquisition module is used for acquiring the amplified stray current signals and transmitting the stray current signals to the central processing unit, the data storage connected with the central processing unit is used for storing data, the display module connected with the central processing unit is used for displaying real-time data, the real-time stray current data is transmitted to a remote monitoring terminal through an Ethernet transmission module connected with the central processing unit; the utility model discloses the structure principle is simple, can effectual collection stray current source, and can enlarge faint stray current signal, has improved response speed greatly, reduces steady state error, has effectively improved analog signal's interference killing feature, has improved detection efficiency, adopts ethernet transmission module to ensure information transmission's reliability simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic block diagram of the present invention;
fig. 3 is a schematic circuit diagram of the current signal amplifying module of the present invention.
In the figure: 1. the device comprises a detection host, 2, a data transmission interface, 3, a main control board, 4, a central processing unit, 5, a data memory, 6, a current signal amplification module, 7, an AD acquisition module, 8, a display module, 9, an Ethernet transmission module, 10, a high-frequency current transformer, 11 and a remote monitoring terminal.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, a mine stray current detector includes a detection host 1, a data transmission interface 2 for data transmission is arranged on one side of the detection host 1, the number of the data transmission interface 2 is at least one, a main control board 3 is arranged in an inner cavity of the detection host 1, a central processing unit 4 for processing data, a data storage 5 for storing data, a current signal amplification module 6 for amplifying a weak stray current signal, an AD acquisition module 7 for acquiring the amplified stray current signal, a display module 8 for displaying data, and an ethernet transmission module 9 are arranged on the main control board 3, wherein the central processing unit 4 adopts an STM32F407 chip; the input end of the current signal amplification module 6 is connected with a high-frequency current transformer 10 on a power cable, the output end of the current signal amplification module 6 is connected with an AD acquisition module 7, the AD acquisition module 7 adopts an AD7685BRMZRL7 chip, the output end of the AD acquisition module 7 is connected with a central processing unit 4, the central processing unit 4 is respectively connected with a data memory 5 and a display module 8, and the central processing unit 4 is connected with a remote monitoring terminal 11 through an Ethernet transmission module 9.
The ethernet transmission module 9 is composed of the ethernet module carried by the central processing unit 4 and an external PHY chip, and the model of the external PHY chip is DP83848 CVVX.
As shown in fig. 3, the current signal amplifying module 6 includes an operational amplifier U13A, an operational amplifier U13B and an operational amplifier U13C, wherein the operational amplifier U13A is a voltage follower; the operational amplifier U13C is a first-stage non-inverting amplifier, and the input end of the operational amplifier U13C is connected with the output end of the operational amplifier U13A; the operational amplifier U13B is a second-stage non-inverting amplifier, the input end of the operational amplifier U13B is connected with the output end of the operational amplifier U13C, the output end of the operational amplifier U13B is connected with the AD acquisition module 7, and the models of the operational amplifier U13A, the operational amplifier U13B and the operational amplifier U13C are all OP 4177.
The utility model is characterized in that a data transmission interface 2 for data transmission is arranged at one side of a detection host 1, a main control board 3 is arranged in the inner cavity of the detection host 1, a central processing unit 4, a data memory 5, a current signal amplifying module 6, an AD acquisition module 7, a display module 8 and an Ethernet transmission module 9 are arranged on the main control board 3, the input end of the current signal amplifying module 6 is connected with a high-frequency current transformer 10 on a power cable, the AD acquisition module 7 is used for amplifying weak stray current signals and collecting the amplified stray current signals and transmitting the signals to the central processing unit 4, the data storage 5 connected with the central processing unit 4 is used for storing data, the display module 8 connected with the central processing unit 4 is used for displaying real-time data, the real-time stray current data is transmitted to a remote monitoring terminal 11 through an Ethernet transmission module 9 connected with the central processing unit 4; the utility model discloses the structure principle is simple, can effectual collection stray current source, and can enlarge faint stray current signal, has improved response speed greatly, reduces steady state error, has effectively improved analog signal's interference killing feature, has improved detection efficiency, adopts ethernet transmission module to ensure information transmission's reliability simultaneously.
Claims (6)
1. A mine stray current detector comprises a detection host (1), a data transmission interface (2) for data transmission is arranged on one side of the detection host (1), and is characterized in that a main control board (3) is arranged in an inner cavity of the detection host (1), a central processing unit (4) for processing data, a data storage (5) for storing data, a current signal amplification module (6) for amplifying weak stray current signals, an AD acquisition module (7) for acquiring the amplified stray current signals, a display module (8) for displaying data and an Ethernet transmission module (9) are arranged on the main control board (3), the input end of the current signal amplification module (6) is connected with a high-frequency current transformer (10) on a power cable, the output end of the current signal amplification module (6) is connected with the AD acquisition module (7), the output end of the AD acquisition module (7) is connected with the central processing unit (4), the central processing unit (4) is respectively connected with the data storage device (5) and the display module (8), and the central processing unit (4) is connected with the remote monitoring terminal (11) through the Ethernet transmission module (9).
2. The mine stray current detector of claim 1, wherein the central processing unit (4) is an STM32F407 chip.
3. The mine stray current detector of claim 1, wherein the ethernet transport module (9) comprises the cpu (4) with its ethernet module and an external PHY chip of DP83848 CVVX.
4. The mine stray current detector of claim 1, wherein the current signal amplification module (6) comprises an operational amplifier U13A, an operational amplifier U13B and an operational amplifier U13C, the operational amplifier U13A being a voltage follower; the operational amplifier U13C is a first-stage non-inverting amplifier, and the input end of the operational amplifier U13C is connected with the output end of the operational amplifier U13A; the operational amplifier U13B is a second-stage non-inverting amplifier, the input end of the operational amplifier U13B is connected with the output end of the operational amplifier U13C, and the output end of the operational amplifier U13B is connected with the AD acquisition module (7).
5. The mine stray current detector of claim 4, wherein the operational amplifier U13A, operational amplifier U13B and operational amplifier U13C are all OP 4177.
6. The mine stray current detector of claim 4, wherein the AD acquisition module (7) is an AD7685BRMZRL7 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922433489.2U CN211928014U (en) | 2019-12-30 | 2019-12-30 | Mine stray current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922433489.2U CN211928014U (en) | 2019-12-30 | 2019-12-30 | Mine stray current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211928014U true CN211928014U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922433489.2U Active CN211928014U (en) | 2019-12-30 | 2019-12-30 | Mine stray current detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211928014U (en) |
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2019
- 2019-12-30 CN CN201922433489.2U patent/CN211928014U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Mine stray current detector Effective date of registration: 20220107 Granted publication date: 20201113 Pledgee: Bank of Nanjing Co.,Ltd. Xuzhou Branch Pledgor: Jiangsu Guangzhi Electric Co.,Ltd. Registration number: Y2022980000145 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 221000 Zhujiang Road North, Yinshan Road East, Tongshan District, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Guangshi Electric Co.,Ltd. Address before: 221000 Zhujiang Road North, Yinshan Road East, Tongshan District, Xuzhou City, Jiangsu Province Patentee before: Jiangsu Guangzhi Electric Co.,Ltd. |