CN110661415B - Subway passenger guide display control drive device - Google Patents
Subway passenger guide display control drive device Download PDFInfo
- Publication number
- CN110661415B CN110661415B CN201810685327.5A CN201810685327A CN110661415B CN 110661415 B CN110661415 B CN 110661415B CN 201810685327 A CN201810685327 A CN 201810685327A CN 110661415 B CN110661415 B CN 110661415B
- Authority
- CN
- China
- Prior art keywords
- output
- power
- rectifier
- pwm controller
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to the technical field of subway station display terminals, in particular to a subway guide display control driving device which comprises a PCB board, a power input port (power input socket) arranged on the PCB board, a power protection module, a first rectifier, a first PWM controller, a transformer, a second rectifier, a first filter, a second PWM controller, an energy storage inductor, a second filter and a power output port, wherein the power input port is used for being connected with a 110V power supply, the power output port is connected with the input end of the power protection module, and the output end of the power protection module is connected with the input end of the first rectifier.
Description
Technical Field
The invention relates to the technical field of subway station display terminals, in particular to a subway guide display control driving device.
Background
When the A board is used for starting the signal, the differential signal is connected with the VGA wire, so that the defect of weak interference resistance is caused,
The power supply (DC/DC power module) is provided with two-to-three-way output, and can be connected with the load equipment to supply power for the load equipment. The existing power supply in the subway is connected with the LCD power supply board through wire leads (cables), the problems of poor contact, unstable power supply and high failure rate occur frequently in the using process of the power supply in the subway, the problems of ageing, easiness in heating, weak interference resistance and overhigh power consumption of the wire leads are mainly solved in the wire connection, and particularly the problems of loosening, poor contact and unstable power supply of the wire leads and high failure rate are caused in the operating environment of the subway due to vibration, so that the service life of products is seriously influenced.
Disclosure of Invention
The invention aims to provide a power supply device of a subway guide display terminal, which is used for integrating an LCD power supply board of load equipment onto a DC/DC power supply board so as to solve the defects in the prior art.
The technical mode of the invention is realized in such a way that the power supply device comprises a PCB board (printed circuit board), a power input port (power input socket) arranged on the PCB board, a power protection module, a first rectifier, a first PWM controller, a transformer, a second rectifier, a first filter, a second PWM controller, an energy storage inductor, a second filter and a power output port (power output socket),
The power input port is used for being connected with a 110V power supply, the power output port is connected with the input end of the power protection module, the output end of the power protection module is connected with the input end of the first rectifier, the protection circuit is used for protecting components at the rear end of the power input port from being damaged under the conditions of overvoltage, overcurrent, surge, electromagnetic interference and the like, the output end of the first rectifier is connected with the input end of the first PWM controller, the first rectifier is used for converting alternating current input by the power protection module into direct current and outputting the direct current to the first PWM controller, the output end of the first PWM controller is connected with the input end of the transformer, the first PWM controller is used for receiving output voltage feedback of the transformer and current feedback of a primary coil of the transformer, controlling the on-off of the primary coil, realizing output voltage adjustment and converting the direct current into alternating current;
The output end of the second PWM controller is connected with the input end of the energy storage inductor, and the second PWM controller is used for receiving a current feedback signal output by the energy storage inductor, adjusting the output duty ratio and controlling the charge and discharge time of the energy storage inductor so as to adjust the output voltage and current; the output end of the energy storage inductor is connected with the input end of the second filter, and the energy storage inductor is used for boosting the voltage output by the second PWM controller;
The output end of the second filter is connected with a power output port (power output socket) on the PCB;
the output end of the second filter is connected with a power output port (power output socket) on the PCB.
Preferably, the power protection module comprises a fuse, a Schottky diode, a universal diode, a CBB capacitor, a thermistor and a photoresistor, wherein one end of the fuse is connected with the positive electrode of the power supply, the other end of the fuse is connected with the anode of the Schottky diode, the cathode of the Schottky diode is respectively connected with the anode of the universal diode, one end of the CBB capacitor, one end of the thermistor and one end of the photoresistor, and the cathode of the universal diode, the other end of the CBB capacitor, the other end of the thermistor and one end of the photoresistor are respectively connected with the cathode of the power supply
The invention has the advantages and positive effects that:
1. The invention integrates the power supply (DC/DC power module) and the LCD power supply board on one PCB board, optimizes the components on the power supply (DC/DC power module) and the components on the LCD power supply board, and is used for enhancing the anti-interference and anti-vibration performance of the DC/DC power module so as to ensure the normal operation of the LCD.
2. The invention integrates the power supply (DC/DC power module) and the LCD power supply board onto a PCB board, so that the invention can directly supply power to the LCD, compared with the prior power supply (DC/DC power module) and an LCD power supply panel, the LED power supply panel is respectively used, is more convenient to install and safer to use, and in addition, the production efficiency is improved and the overall production cost is reduced.
Drawings
Fig. 1 is a circuit diagram of the overall structure of the present invention.
Fig. 2 is a circuit diagram of a power supply structure of the present invention.
Fig. 3 is a circuit diagram of a second PWM controller of the present invention.
Fig. 4 is a circuit diagram of the power protection module of the present invention.
Reference numerals are a power input port 1, a power protection module 2, a first rectifier 3, a first PWM controller 4, a transformer 5, a second rectifier 6, a first filter 7, a second PWM controller 8, an energy storage inductor 9, a second filter 10, a power output port 11, a fuse 21, a Schottky diode 22, a common diode 23, a CBB capacitor 24, a thermistor 25 and a photoresistor 26.
Detailed Description
Referring to fig. 1 to 4, the present invention includes a printed circuit board, a power input port 1 (power input socket) provided on the printed circuit board, a power protection module 2, a first rectifier 3, a first PWM controller 4, a transformer 5, a second rectifier 6, a first filter 7, a second PWM controller 8, an energy storage inductor 9, a second filter 10, a power output port 11 (power output socket), wherein,
The power input port 1 is used for being connected with a 110V power supply, the power output port 1 is connected with the input end of the power protection module 2, the output end of the power protection module 2 is connected with the input end of the first rectifier 3, the protection circuit is used for protecting the first rectifier 3, the first PWM controller 4, the transformer 5, the second rectifier 6, the first filter 7, the second PWM controller 8, the energy storage inductor 9, the second filter 10 and the power output port 11, which are not damaged under the conditions of overvoltage, overcurrent, surge, electromagnetic interference and the like, the output end of the first rectifier 3 is connected with the input end of the first PWM controller 4, the first rectifier 3 is used for converting alternating current input by the power protection module 2 into direct current and outputting the direct current to the first PWM controller 4, the output end of the first PWM controller 4 is connected with the input end of the transformer 5, the first rectifier 4 is used for receiving the output voltage feedback of the transformer 5 and the side of the transformer 5, the second rectifier 7 is connected with the first rectifier 6 and the side of the transformer 5, the first rectifier 6 is connected with the output end of the second rectifier 6 and the second rectifier 6 is used for converting the direct current into direct current, the direct current which is input by the first rectifier 6 and the direct current which is input by the first rectifier 6, the first rectifier 6 is connected with the output end of the second rectifier 6 is used for converting the direct current which is low-voltage to be output by the direct current, the first filter 7 is used for filtering the current output by the second rectifier 6 to realize stable output of the current;
The output end of the second PWM controller 8 is connected with the input end of the energy storage inductor, the second PWM controller 8 is used for receiving a current feedback signal output by the energy storage inductor, adjusting the output duty ratio, and controlling the charge and discharge time of the energy storage inductor 9 so as to adjust the output voltage and current, the output end of the energy storage inductor 9 is connected with the input end of the second filter 10, and the energy storage inductor 9 is used for boosting the voltage output by the second PWM controller 8;
The output end of the second filter 10 is connected with a power output port 11 (power output socket) on the PCB board.
Referring to fig. 4, the power protection module 2 of the present invention includes a fuse 21, a schottky diode 22, a general diode 23, a CBB capacitor 24, a thermistor 25, and a photoresistor 26, wherein one end of the fuse 21 is connected to a positive electrode of a power supply, the other end of the fuse 21 is connected to an anode of the schottky diode 22, a cathode of the schottky diode 22 is respectively connected to the anode of the general diode 23, one end of the CBB capacitor 24, one end of the thermistor 25, and one end of the photoresistor 26, and a cathode of the general diode 23, the other end of the CBB capacitor 24, the other end of the thermistor 25, and one end of the photoresistor 26 are respectively connected to a cathode of the power supply.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810685327.5A CN110661415B (en) | 2018-06-28 | 2018-06-28 | Subway passenger guide display control drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810685327.5A CN110661415B (en) | 2018-06-28 | 2018-06-28 | Subway passenger guide display control drive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110661415A CN110661415A (en) | 2020-01-07 |
| CN110661415B true CN110661415B (en) | 2025-01-03 |
Family
ID=69027327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810685327.5A Active CN110661415B (en) | 2018-06-28 | 2018-06-28 | Subway passenger guide display control drive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110661415B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208904882U (en) * | 2018-06-28 | 2019-05-24 | 吉林省北联显示技术有限公司 | Subway guide display control drive device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846459B1 (en) * | 2001-12-26 | 2008-07-16 | 삼성전자주식회사 | Liquid crystal display module having integrated connector and liquid crystal display device having same |
| KR101267745B1 (en) * | 2011-11-04 | 2013-05-24 | 유병삼 | Apparatus of supplying heated line with direct current |
| CN103647337B (en) * | 2013-12-24 | 2015-10-07 | 天津中环创新科技有限公司 | Portable type solar energy notebook portable power source |
| CN205564255U (en) * | 2016-04-21 | 2016-09-07 | 重庆蓝岸通讯技术有限公司 | Ordinary DC -DC steps up and LCD compatible circuit who controls in a poor light |
-
2018
- 2018-06-28 CN CN201810685327.5A patent/CN110661415B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208904882U (en) * | 2018-06-28 | 2019-05-24 | 吉林省北联显示技术有限公司 | Subway guide display control drive device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110661415A (en) | 2020-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101848577B (en) | LED driving system and driving method | |
| CN103155714B (en) | Led driving chip and circuit with power compensation | |
| JP5554108B2 (en) | Overcurrent prevention type power supply device and lighting fixture using the same | |
| TW201410068A (en) | High-efficiency LED (light-emitting diode) drive circuit and drive method thereof | |
| CN205596389U (en) | Constant current AC drive circuit and TV set | |
| JP2010136558A (en) | Dc converter for vehicle | |
| CN102238784B (en) | LED power drive circuit | |
| CN110661415B (en) | Subway passenger guide display control drive device | |
| CN109639161B (en) | Voltage conversion circuit and display device | |
| US9351360B2 (en) | Drive circuit for illumination device and illumination device | |
| CN104735837A (en) | LED street lamp power supply without power frequency ripples and with APFC function | |
| CN219329611U (en) | Overvoltage protection circuit and lighting lamp | |
| CN202997964U (en) | Double-end flyback type switch power supply with input overcurrent and power-down protection | |
| CN111489706A (en) | L ED backlight driving device and television | |
| CN201950342U (en) | Control circuit of IGBT inversion type arc-welding machine and circuit board structure thereof | |
| CN111371094B (en) | Double-power-supply system and television | |
| CN212256867U (en) | LED backlight source driving device and television | |
| CN208904882U (en) | Subway guide display control drive device | |
| WO2021036857A1 (en) | Lamp lighting assembly and lighting lamp | |
| TW201440572A (en) | LED drive circuit | |
| CN201860487U (en) | High Conversion Efficiency LED Driver | |
| CN218603681U (en) | Constant-current dimming conversion circuit, driving circuit and lamp | |
| CN218416744U (en) | High-voltage stroboflash-free LED drive circuit | |
| CN100391315C (en) | Power supply device and current converter used by same | |
| CN102665341A (en) | Highly-efficient light emitting diode (LED) power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |