CN210691931U - Outdoor type 1.5KV live line detection LED display screen - Google Patents
Outdoor type 1.5KV live line detection LED display screen Download PDFInfo
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- CN210691931U CN210691931U CN201922302865.4U CN201922302865U CN210691931U CN 210691931 U CN210691931 U CN 210691931U CN 201922302865 U CN201922302865 U CN 201922302865U CN 210691931 U CN210691931 U CN 210691931U
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- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims 1
- 238000011897 real-time detection Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides an outdoor type 1.5KV live-line detection LED display screen, including exchanging 220V and direct current 1.5KV input, high pressure sampling resistance, switching power supply, the unit is tested to 1.5KV, show drive unit, the LED display screen, infrared receiving unit, exchange 220V input and switching power supply and be connected, high pressure sampling resistance and 1.5KV test the unit real-time detection contact net 1.5KV voltage, will have electric signal or no electric signal give and show drive unit, demonstrate 1.5KV contact net voltage status on the LED display screen. The electrified display screen receives the remote controller signal through the infrared receiving unit to change the site stock channel number. The utility model has the advantages that: acquiring the voltage on a 1.5KV overhead line system of the subway in real time, and displaying the presence or absence of electricity on a display screen; the remote controller can conveniently, quickly and safely change the stock channel number on the live display screen; the wide-voltage high-stability switching power supply solves the problem of voltage floating of a railway power grid.
Description
Technical Field
The utility model relates to an outdoor type 1.5KV live working detects LED display screen is applicable to the department such as track traffic lines station maintenance section, detects the demonstration to 1.5KV voltage state on the contact net.
Background
The electrified display screen is arranged only in the places of buses, circuit breakers, transformers, switch cabinets, GIS combined electrical equipment and the like of high-low voltage electrical equipment at a station maintenance section of a rail transit line, and whether the electrical equipment is electrified or not is displayed. The main purpose is to prevent the electrified misoperation of maintenance personnel;
at present, an electrified display screen generates error display when an auxiliary switch fails by acquiring an on-off auxiliary node signal in high-voltage electrical equipment, and signal acquisition units are all optically coupled and isolated, so that the problem of large voltage floating of a power grid on a railway is solved, and the error display of the electrified display screen can also be generated;
at present, the stock track number of the electrified display screen is changed by adopting a USB device to download a generated new program to a control module in the electrified display screen again, and because the working environment of the electrified display screen is special and is installed at a higher place, the manner of changing the stock track number of the electrified display screen by utilizing the USB device is complex and dangerous.
Disclosure of Invention
For solving the problem that exists among the above-mentioned technique, the utility model aims at providing a can real-time detection contact net voltage true value, avoid the error display, the simple and convenient operation changes the stock channel number above the electrified display screen.
In order to achieve the purpose, the invention adopts the technical scheme that: an outdoor type 1.5KV live line detection LED display screen, wherein: the device comprises an alternating current 220V input, a direct current 1.5KV input, a high-voltage sampling resistor, a junction box, a protective shell, a switching power supply, a 1.5KV electricity testing unit, a display driving unit, an LED display screen, an infrared receiving unit and a remote controller.
The alternating current 220V input is connected to a switching power supply through a junction box to provide a system power supply for the whole device, the direct current 1.5KV input is connected to a 1.5KV electricity testing unit through the junction box after being connected with a high-voltage sampling resistor in series, voltage on a contact network is collected in real time, signals are transmitted to a display driving unit through an internal relay, and the network voltage state is displayed on an LED display screen. The infrared receiving unit is connected with the display driving unit and fixed in the junction box.
The utility model has the advantages that the switch power supply with wide voltage and high stability is used for solving the problem of unstable whole device system caused by large floating of rail transit network voltage, the voltage on a subway 1.5KV contact network is collected in real time, the real voltage value is obtained by collection, the electricity or electricity is displayed on an LED display screen, and the field maintenance staff can be clear at a glance; the stock channel number on the electrified display screen is conveniently, quickly and safely changed by using the remote controller, and the LED display screen is clear and reliable in display and long in display distance.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
fig. 2 is a schematic structural block diagram of the 1.5KV electricity testing unit of the present invention.
In the figure:
1. AC 220V input 2, DC 1.5KV input 3, high voltage sampling resistor
4. Junction box 5, protective shell 6, switch power supply
7.1.5KV electricity testing unit 8 display driving unit 9 LED display screen
10. Infrared receiving unit 11, remote controller 12, differential amplification
13. Optical coupler isolation 14, central processing unit 15 and relay output
16. Key 17, indicator light
Detailed Description
The outdoor 1.5KV live-line detection LED display screen of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to an outdoor type 1.5KV live line detects LED display screen, including exchanging 220V input 1, direct current 1.5KV input 2, high-voltage sampling resistance 3, junction box 4, protective housing 5, switching power supply 6, 1.5KV electricity testing unit 7, display driving unit 8, LED display screen 9, infrared receiving unit 10, remote controller 11, exchanging 220V input 1 inserts on switching power supply 6 through junction box 4, switching power supply 6 exchanges 100V-250V wide-pressure input, can satisfy the big condition of rail transit net voltage float, provides stable system power supply for whole device; the direct current 1.5KV input 2 and the high-voltage sampling resistor 3 are connected in series and then connected to the 1.5KV electricity testing unit 7 through the junction box 4, the voltage range of the direct current 1.5KV input 2 is 12V to 1800V, the voltage detection precision is +/-1%, the real voltage value analysis of a contact net is detected in real time through the 1.5KV electricity testing unit 7, and signals are transmitted to the display driving unit 8 through a relay node; the LED display screen 9 is a three-color LED screen, the driving unit 8 acquires node signals and displays red, green and yellow faults in a network voltage state on the LED display screen 9 through display, and the display is clear for the overhaul and maintenance personnel to watch; after the infrared receiving unit 10 receives the signal of the remote controller 11, the LED screen displays the display content operated by the remote controller 11 in real time, and the stock number data is stored after being changed according to the required stock number, and the stock number data cannot be lost when the power failure occurs.
Switching power supply 6, 1.5KV test electric unit 7, show drive unit 8, LED display screen 9 and fix on the inside mounting bracket of protective housing 5, and protective housing 5 is outdoor waterproof function, and junction box 4 is fixed outside protective housing 5, and infrared receiving element 10 is connected with show drive unit 8, fixes inside junction box 4, can accept outside remote controller 11 signal.
The 1.5KV electricity testing unit 7 is shown in fig. 2: the direct current 1.5KV input 2 and the high-voltage sampling resistor 3 are connected in series to a differential amplification circuit 12 and an optical coupling isolation circuit 13, then analog signals are obtained and connected to a central processing unit 14, the analog signals are analyzed by the central processing unit 14 and then 15 node signals are output through a relay, an indicator lamp 17 prompts the voltage value of the direct current 1.5KV input 2, and the 1.5KV electricity testing unit 7 can be corrected through a key 16.
Claims (7)
1. An outdoor type 1.5KV live line detection LED display screen comprises: junction box (4), protecting sheathing (5), junction box (4) are equipped with interchange 220V input (1) and direct current 1.5KV input (2), high pressure sampling resistance (3) input, be equipped with switching power supply (6), 1.5KV in protecting sheathing (5) and test electric unit (7), display drive unit (8), LED display screen (9), infrared receiving unit (10), remote controller (11), display drive unit (8) are received 1.5KV and are tested electric unit (7), infrared receiving unit (10) information and pass LED display screen (9), characterized by: the alternating current 220V input (1) is connected to a switching power supply (6) through a wiring box (4) to provide a system power supply for the whole device, the direct current 1.5KV input (2) and the high-voltage sampling resistor (3) are connected in series and then connected to a 1.5KV electricity testing unit (7) through the wiring box (4) to collect voltage on a contact network in real time, signals are transmitted to a display driving unit (8) through an internal relay, and the network voltage state is displayed on an LED display screen (9).
2. The outdoor type 1.5KV live-line detection LED display screen as claimed in claim 1, wherein: the direct current 1.5KV input (2) is subjected to differential amplification (12) and optical coupling isolation (13) sequentially through a high-voltage sampling resistor (3) and is connected with a central processing unit (14), and the central processing unit (14) transmits signals to a relay output (15) and an indicator light (17).
3. The outdoor type 1.5KV live-line detection LED display screen as claimed in claim 2, wherein: the central processing unit (14) is provided with a key (16).
4. The outdoor type 1.5KV live-line detection LED display screen as claimed in claim 1, wherein: the infrared receiving unit (10) is connected with the display driving unit (8) and fixed in the junction box (4).
5. The outdoor type 1.5KV live-line detection LED display screen as claimed in claim 1, wherein: the remote controller (11) changes the number of the stock.
6. The outdoor type 1.5KV live-line detection LED display screen as claimed in claim 1, wherein: the LED display screen (9) is a three-color surface-mounted display screen or a dot matrix display screen.
7. The outdoor type 1.5KV live-line detection LED display screen as claimed in claim 1, wherein: and the wiring box (4) is fixed on the protective shell (5) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302865.4U CN210691931U (en) | 2019-12-20 | 2019-12-20 | Outdoor type 1.5KV live line detection LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302865.4U CN210691931U (en) | 2019-12-20 | 2019-12-20 | Outdoor type 1.5KV live line detection LED display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210691931U true CN210691931U (en) | 2020-06-05 |
Family
ID=70897663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922302865.4U Active CN210691931U (en) | 2019-12-20 | 2019-12-20 | Outdoor type 1.5KV live line detection LED display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210691931U (en) |
-
2019
- 2019-12-20 CN CN201922302865.4U patent/CN210691931U/en active Active
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| GR01 | Patent grant | ||
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Effective date of registration: 20231127 Granted publication date: 20200605 |
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| PP01 | Preservation of patent right |