CN218159586U - Digital color screen test circuit - Google Patents
Digital color screen test circuit Download PDFInfo
- Publication number
- CN218159586U CN218159586U CN202222193453.3U CN202222193453U CN218159586U CN 218159586 U CN218159586 U CN 218159586U CN 202222193453 U CN202222193453 U CN 202222193453U CN 218159586 U CN218159586 U CN 218159586U
- Authority
- CN
- China
- Prior art keywords
- module
- digital color
- color screen
- pin
- interface
- 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
Images
Abstract
The utility model discloses a digital color screen test circuit relates to the digital color screen test field of LED, and this digital color screen test circuit includes: the power supply input port module is used for introducing voltage and supplying power to the drive IC module and the output module; the key module is used for controlling whether the drive IC module is driven or not; the driving IC module is used for driving the digital color screen to emit light through the output module and capturing the current of the digital color screen, and the output module is used for externally connecting the digital color screen to receive the driving of the driving IC module; power input port module connection driver IC module, output module, compare with prior art, the beneficial effects of the utility model are that: the utility model can effectively detect the qualification of the digital color screen, is suitable for common LED display driving chips in the market, and is compatible with most driving chips in the market; the drive type of the digital color screen can be actively identified/selected for testing; the digital color screen is convenient to connect, a special corresponding single chip microcomputer is not needed for connection, and time and labor are saved.
Description
Technical Field
The utility model relates to a digital various screen test field of LED specifically is a digital various screen test circuit.
Background
The digital color screen is a display screen made of LEDs with two or more colors of red, yellow, blue and green as a pixel, and the development of the digital color screen is rapid at present, and the digital color screen replacing a monochromatic digital color screen has become an irreversible trend.
However, no general tool is available in the current digital color screen test, and whether the product is qualified or not can be tested and distinguished only by sending a single chip microcomputer by a user of the digital color screen. For example, the party A entrusts the party B to produce the digital color screen to be applied to the intelligent air conditioner of the party A, and the party B needs the singlechip of the intelligent air conditioner of the party A to test the qualification of the digital color screen. The method is inconvenient, and the integrated technology and scheme of the first side are easy to be revealed, so that the improvement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a color screen of digital test circuit to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a digital color screen test circuit, comprising:
the power supply input port module is used for introducing voltage and supplying power to the drive IC module and the output module;
the key module is used for controlling whether the drive IC module is driven or not;
the drive IC module is used for driving the digital color screen to emit light through the output module and capturing the current of the digital color screen,
the output module is used for receiving the drive of the drive IC module by an external digital color screen;
the power input port module is connected with the drive IC module and the output module, the key module is connected with the drive IC module, and the drive IC module is connected with the output module.
As a further aspect of the present invention: the power input port module comprises an interface P2 and an interface P3, the interface P2 is a 5521DC power interface, the interface P3 is a TYPE-C USB power interface, the second end of the interface P3 is connected with the A5 pin and the B5 pin of the interface P2, the first end of the interface P3 is connected with the A12 pin and the A13 pin of the interface P2 and the anode of the diode D1, and the cathode of the diode D1 is connected with the drive IC module and the output module.
As a further aspect of the present invention: the drive IC module comprises an integrated circuit U1, the model of the integrated circuit U1 is STC15W104, the pin No. 2 of the integrated circuit U1 is connected with one end of a resistor R3 and the negative electrode of a diode DZ, the other end of the resistor R3 is connected with a power input port module, the positive electrode of the diode DZ is grounded, the pin No. 3 and the pin No. 8 of the integrated circuit U1 are connected with a key module, and the pin No. 1, the pin No. 5, the pin No. 6 and the pin No. 7 of the integrated circuit U1 are connected with an output module.
As a further aspect of the present invention: the key module comprises a switch S1 and a switch S2, one end of the switch S1 is grounded, the other end of the switch S1 is connected with a No. 8 pin of the integrated circuit U1, one end of the switch S2 is grounded, and the other end of the switch S2 is connected with a No. 3 pin of the integrated circuit U1.
As the utility model discloses further scheme again: the output module comprises an interface P1, the interface P1 is a Header 6 connector, the first end of the interface P1 is connected with a pin No. 1 of the integrated circuit U1, the second end of the interface P1 is connected with a pin No. 7 of the integrated circuit U1, the third end of the interface P1 is connected with a pin No. 6 of the integrated circuit U1, the fourth end of the interface P1 is connected with a pin No. 5 of the integrated circuit U1, the fifth end of the interface P1, the sixth end of the interface P1 is grounded, and the interface P1 is externally connected with a digital color screen.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model can effectively detect the qualification of the digital color screen, is suitable for the common LED display driving chip in the market, and is compatible with most driving chips in the market; the drive type of the digital color screen can be actively identified/selected for testing; the digital color screen is convenient to connect, a special corresponding single chip microcomputer is not needed for connection, and time and labor are saved.
Drawings
FIG. 1 is a circuit diagram of a digital color screen test circuit.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a digital color screen test circuit includes:
the power supply input port module is used for introducing voltage and supplying power to the drive IC module and the output module;
the key module is used for controlling whether the drive IC module is driven or not;
the driving IC module is used for driving the digital color screen to emit light through the output module and capturing the current of the digital color screen,
the output module is used for receiving the drive of the drive IC module by an external digital color screen;
the power input port module is connected with the drive IC module and the output module, the key module is connected with the drive IC module, and the drive IC module is connected with the output module.
In a specific embodiment: referring to fig. 1, the driver IC module is configured with 20 kinds of chip drivers (the programming and driving are related to the prior art, and are not described in detail here), when the output module interface is connected to the nixie tube, and the power input port module is powered on, the key module (chip select) is pressed, the driver IC module uses 20 kinds of drivers to drive the chips within 10ms, and captures the voltages of the comparison resistors one by one through the ADC channels, and calculates the input current for comparison. If the captured current is the maximum, the nixie tube is indicated to be full bright, the driving program is proper, the current chip type is selected for testing, and a tester observes the light-emitting condition and ammeter data to judge whether the product is qualified.
In this embodiment: referring to fig. 1, the power input port module includes an interface P2 and an interface P3, the interface P2 is a 5521DC power interface, the interface P3 is a TYPE-C USB power interface, a second end of the interface P3 is connected to pins A5 and B5 of the interface P2, a first end of the interface P3 is connected to pins a12 and a13 of the interface P2 and an anode of a diode D1, and a cathode of the diode D1 is connected to the driving IC module and the output module.
The TYPE-C USB and 5521DC dual-input power supply has rich power input interfaces. The diode D2 is a light emitting diode and is used to detect whether or not a power is currently turned on.
In this embodiment: referring to fig. 1, the driving IC module includes an integrated circuit U1, the model of the integrated circuit U1 is STC15W104, a pin 2 of the integrated circuit U1 is connected to one end of a resistor R3 and a cathode of a diode DZ, the other end of the resistor R3 is connected to the power input port module, an anode of the diode DZ is grounded, a pin 3 and a pin 8 of the integrated circuit U1 are connected to the key module, and a pin 1, a pin 5, a pin 6, and a pin 7 of the integrated circuit U1 are connected to the output module.
The diode DZ is a zener diode and clamps the voltage to ensure that the voltage supplied to the integrated circuit U1 is 5.1V.
In this embodiment: referring to fig. 1, the key module includes a switch S1 and a switch S2, one end of the switch S1 is grounded, the other end of the switch S1 is connected to the pin No. 8 of the integrated circuit U1, one end of the switch S2 is grounded, and the other end of the switch S2 is connected to the pin No. 3 of the integrated circuit U1.
After the switch S2 is pressed, the integrated circuit U1 starts to drive the program structure output module to drive the nixie tube. And capturing the voltages of the comparison resistors one by one through ADC channels, and calculating and comparing input currents. If the captured current is the maximum, the nixie tube is indicated to be full bright, the driving program is proper, the current chip type is selected for testing, and a tester observes the light-emitting condition and ammeter data to judge whether the product is qualified.
In this embodiment: referring to fig. 1, the output module includes an interface P1, the interface P1 is a Header 6 connector, a first end of the interface P1 is connected to the pin 1 of the integrated circuit U1, a second end of the interface P1 is connected to the pin 7 of the integrated circuit U1, a third end of the interface P1 is connected to the pin 6 of the integrated circuit U1, a fourth end of the interface P1 is connected to the pin 5 of the integrated circuit U1 and a fifth end of the interface P1, a sixth end of the interface P1 is grounded, and the interface P1 is externally connected to the digital color screen.
The first end to the sixth end of the Header 6 connector are respectively a power positive electrode VCC, a clock signal SCLK/SCL/CLK, a data signal DIN/DIO/SDA, a chip select signal STB1, a chip select signal STB2 and a power negative electrode GND. The Header 6 connector supports the full-series color screen drive of the model of the chip, i.e. sky, light, micro and medium micro.
The utility model discloses a theory of operation is: the power supply input port module introduces voltage to supply power for the drive IC module and the output module, the key module controls the drive IC module to drive or not, the drive IC module drives the digital color screen to emit light through the output module and captures the current of the digital color screen, and the output module is externally connected with the digital color screen to receive the drive of the drive IC module.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A kind of digital color screen test circuit, characterized by that:
the digital color screen test circuit comprises:
the power supply input port module is used for introducing voltage and supplying power to the drive IC module and the output module;
the key module is used for controlling whether the drive IC module is driven or not;
the driving IC module is used for driving the digital color screen to emit light through the output module and capturing the current of the digital color screen,
the output module is used for receiving the drive of the drive IC module by an external digital color screen;
the power input port module is connected with the drive IC module and the output module, the key module is connected with the drive IC module, and the drive IC module is connected with the output module.
2. The digital color screen test circuit according to claim 1, wherein the power input port module comprises a port P2 and a port P3, the port P2 is a 5521DC power port, the port P3 is a TYPE-C USB power port, a second end of the port P3 is connected to pins A5 and B5 of the port P2, a first end of the port P3 is connected to pins a12 and a13 of the port P2 and an anode of the diode D1, and a cathode of the diode D1 is connected to the driving IC module and the output module.
3. The digital color screen test circuit according to claim 1, wherein the driver IC module comprises an integrated circuit U1, the model of the integrated circuit U1 is STC15W104, a pin 2 of the integrated circuit U1 is connected to one end of a resistor R3 and a cathode of a diode DZ, the other end of the resistor R3 is connected to the power input port module, an anode of the diode DZ is grounded, a pin 3 and a pin 8 of the integrated circuit U1 are connected to the key module, and a pin 1, a pin 5, a pin 6 and a pin 7 of the integrated circuit U1 are connected to the output module.
4. The digital color screen test circuit according to claim 3, wherein the key module comprises a switch S1 and a switch S2, one end of the switch S1 is grounded, the other end of the switch S1 is connected to pin No. 8 of the integrated circuit U1, one end of the switch S2 is grounded, and the other end of the switch S2 is connected to pin No. 3 of the integrated circuit U1.
5. The digital color screen test circuit according to claim 3, wherein the output module comprises an interface P1, the interface P1 is a Header 6 connector, a first end of the interface P1 is connected to the pin 1 of the integrated circuit U1, a second end of the interface P1 is connected to the pin 7 of the integrated circuit U1, a third end of the interface P1 is connected to the pin 6 of the integrated circuit U1, a fourth end of the interface P1 is connected to the pin 5 of the integrated circuit U1 and a fifth end of the interface P1, a sixth end of the interface P1 is grounded, and the interface P1 is externally connected to the digital color screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222193453.3U CN218159586U (en) | 2022-08-19 | 2022-08-19 | Digital color screen test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222193453.3U CN218159586U (en) | 2022-08-19 | 2022-08-19 | Digital color screen test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218159586U true CN218159586U (en) | 2022-12-27 |
Family
ID=84552333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222193453.3U Active CN218159586U (en) | 2022-08-19 | 2022-08-19 | Digital color screen test circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218159586U (en) |
-
2022
- 2022-08-19 CN CN202222193453.3U patent/CN218159586U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104347033A (en) | LED (Light-Emitting Diode) display screen driving circuit | |
| CN112289253B (en) | Drive circuit of LED unit, LED unit and display screen | |
| CN104347032A (en) | Driving circuit of outdoor LED (Light Emitting Diode) display screen | |
| US20120326633A1 (en) | Detector circuit and method for operating a detector circuit | |
| US20070013626A1 (en) | Display apparatus | |
| CN103198809A (en) | LED (Light Emitting Diode) backlight source and liquid-crystal display equipment | |
| TWI618961B (en) | Light-emitting module and electronic device | |
| CN103313459A (en) | Control device for indicating lamp | |
| CN104347034A (en) | Double-power LED (light-emitting diode) display screen drive circuit | |
| CN111856256A (en) | Quick charging equipment test system and test method thereof | |
| CN218159586U (en) | Digital color screen test circuit | |
| CN102118904B (en) | LED illuminating system and control method thereof | |
| CN201203005Y (en) | Direct inserting lamp belt | |
| CN209946352U (en) | HiL wire harness testing device | |
| CN103777386A (en) | LCM (Liquid Crystal Display Module) testing machine | |
| CN102186288A (en) | Intelligent LED (Light Emitting Diode) driving chip | |
| CN111724723B (en) | Aging device | |
| CN201281739Y (en) | Test fixture for electronic equipment loop | |
| CN107069913B (en) | Charging control method, user terminal and charger | |
| CN211348572U (en) | Multi-string battery performance debugging tool | |
| CN201750346U (en) | Power supply with self test and display function | |
| CN218298432U (en) | Lamp panel test circuit, test board and test device | |
| CN213181726U (en) | Multifunctional multimeter | |
| CN216595410U (en) | Testing device for testing two kinds of packaged chips | |
| CN216209730U (en) | Multifunctional charging detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |