CN202905111U - A dynamic taxi indicator using a LED with full dot matrix - Google Patents
A dynamic taxi indicator using a LED with full dot matrix Download PDFInfo
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- CN202905111U CN202905111U CN201220233736XU CN201220233736U CN202905111U CN 202905111 U CN202905111 U CN 202905111U CN 201220233736X U CN201220233736X U CN 201220233736XU CN 201220233736 U CN201220233736 U CN 201220233736U CN 202905111 U CN202905111 U CN 202905111U
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Abstract
The utility model discloses a dynamic taxi indicator using a LED with full dot matrix. The taxi indicator comprises a pedestal and a display board disposed on the pedestal. The improvements are that the display board comprises a LED dot-matrix display screen and a control circuit controlling the dot-matrix display screen, that the control circuit comprises a master control unit, a logic converting unit, a signal converting unit, a signal driving unit, and displaying units, that the master control unit is electrically connected with the logic converting unit and the signal converting unit, that the logic converting unit is electrically connected with the signal converting unit, that the signal converting unit is electrically connected with the signal driving unit, that the signal driving unit is electrically connected with the displaying units, and that the displaying units are electrically connected with the signal driving unit. The beneficial effects of the taxi indicator are that different state information can be displayed on the dynamic taxi indicator using a LED with full dot matrix by using LED dot matrix to form dynamic display, and that brightness of the taxi indicator is increased by using LED dot matrix display.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a taxi sign, especially a full dot matrix developments taxi sign of LED.
[ background of the invention ]
The known taxi indicator is a display device for displaying the operation state of a taxi, the taxi indicator in the prior art generally adopts a light projection mode, can only display an empty taxi state, has insufficient brightness, is not easy to recognize at night, and brings great inconvenience for passengers who rent and take the taxi to confuse. Therefore, the taxi indicator in the prior art has the defects of single display function, low display brightness and the like, and needs to be further solved.
[ summary of the invention ]
An object of the utility model is to overcome effectively not enough of above-mentioned technique, provide a LED full dot matrix developments taxi sign that adopts the LED dot matrix to realize, this sign can realize developments demonstrate the running state of hiring a car.
The technical scheme of the utility model is realized like this: the utility model provides a full dot matrix of LED developments taxi sign, it includes the base and sets up the display board on the base, and its improvement lies in: the display board comprises an LED dot matrix display screen and a control circuit for controlling the LED dot matrix display screen.
The technical scheme is further explained as follows:
the control circuit comprises a main control unit, a logic conversion unit, a signal driving unit and a display unit; wherein,
the main control unit is respectively electrically connected with the logic conversion unit and the signal conversion unit, receives an instruction input from the outside, converts the instruction into a control signal for controlling display and corresponding display data, and outputs the control signal and the display data to the logic change unit and the signal conversion unit;
the logic conversion unit is electrically connected with the signal conversion unit; the logic conversion unit generates row refreshing data, column refreshing data and control signals which can be received by the display unit after logically processing the received control signals and the display data, and sends the row refreshing data, the column refreshing data and the control signals to the signal conversion unit;
the signal conversion unit is electrically connected with the signal driving unit, processes the received row refreshing data, the row refreshing data and the control signal to generate a row driving signal required by the display unit, generates serial data and corresponding frame row synchronization and latch information at the same time, and sends the row driving signal, the serial data and the corresponding frame row synchronization and latch information to the signal driving unit;
the signal driving unit is electrically connected with the display unit and latches the received serial data, converts the serial data into corresponding display driving data and then sends the display driving data to the display unit;
the display unit is electrically connected with the signal driving unit, receives the display driving data and dynamically refreshes the displayed data in the display area.
The display unit comprises a first display unit and a second display unit, and the first display unit and the second display unit are respectively electrically connected with the signal driving unit; the first display unit and the second display unit are both array display modules formed by a plurality of LEDs.
The main control unit comprises a first single chip microcomputer, a second single chip microcomputer, a control interface circuit and a serial port conversion circuit, wherein the control interface circuit is electrically connected with the first single chip microcomputer, the serial port conversion circuit is electrically connected with the serial port conversion circuit, and the first single chip microcomputer is electrically connected with the second single chip microcomputer; the serial port conversion circuit converts the input instruction and inputs the converted instruction to the second single chip microcomputer, the second single chip microcomputer converts the instruction into an internal code and sends the internal code to the first single chip microcomputer, the first single chip microcomputer processes the internal code and then selects the display data row and sends the parallel data to the logic change unit, and the column selection and display switch command is sent to the signal conversion unit.
The beneficial effects of the utility model reside in that: the utility model adopts the LED lattice to form the dynamic display LED full-lattice dynamic taxi indicator, realizes the display of various different state information by controlling the LED lattice, and the passenger can obtain more and more specific state information from the taxi indicator, thus being beneficial to the passenger to take the taxi; in addition, the LED dot matrix display is adopted, so that the brightness of the taxi indication board is higher, the current running state of a taxi can be clearly displayed, and the taxi indication board is convenient for passengers to identify; meanwhile, the LED dot matrix is more energy-saving and environment-friendly, and the service life is long.
[ description of the drawings ]
FIG. 1 is a schematic circuit block diagram of the present invention
Fig. 2a, 2b, 2c, 2d, 2e are schematic diagrams of the main control unit of the present invention
Fig. 3a, 3b, 3c, 3d, and 3e are schematic diagrams of the signal conversion unit of the present invention
FIG. 4 is a schematic diagram of the middle signal driving unit of the present invention
FIG. 5 is a schematic view of the LED array of the first display unit of the present invention
FIG. 6 is a schematic view of the LED array of the second display unit of the present invention
[ detailed description ] embodiments
The invention is further described with reference to the following figures and examples.
The utility model discloses a full dot matrix of LED developments taxi sign, it includes the base and sets up the display board on the base, the display board includes the control circuit of LED dot matrix display screen and control LED dot matrix display screen.
Referring to fig. 1, the control circuit includes a main control unit 1, a logic conversion unit 2, a signal conversion unit 3, a signal driving unit 4, and a display unit (i.e., an LED dot matrix); wherein,
the main control unit 1 is respectively electrically connected with the logic conversion unit 2 and the signal conversion unit 3, receives an instruction input by an external infrared remote controller and a key controller, converts the instruction into a control signal for controlling display and corresponding display data, and outputs the control signal and the display data to the logic conversion unit and the signal conversion unit 3; the logic conversion unit 2 is electrically connected with the signal conversion unit 3; the logic conversion unit 2 generates row refresh data, column refresh data and control signals which can be received by the display unit after performing logic processing on the received control signals and display data, and sends the row refresh data, the column refresh data and the control signals to the signal conversion unit 3; the signal conversion unit 3 is electrically connected with the signal driving unit 4, the signal conversion unit 3 processes the received row refreshing data, column refreshing data and control signals to generate row driving signals required by the display unit, generates serial data and corresponding frame column synchronization and latch information at the same time, and sends the row driving signals, the serial data and the corresponding frame column synchronization and latch information to the signal driving unit 4; the signal driving unit 4 is electrically connected with the display unit, and the signal driving unit 4 latches and converts the received serial data into corresponding display driving data and then sends the display driving data to the display unit; the display unit is electrically connected with the signal driving unit 4, receives the display driving data, and dynamically refreshes the displayed data in the display area.
The display unit comprises a first display unit 6 and a second display unit 7, and the first display unit 6 and the second display unit 7 are respectively electrically connected with the signal driving unit 4; the first display unit 6 and the second display unit 7 are both an array display module composed of a plurality of LEDs.
Referring to fig. 2a to 2e, the main control unit 1 includes a first single chip, a second single chip, a control interface circuit and a serial port conversion circuit, wherein the control interface circuit is electrically connected to the first single chip, the serial port conversion circuit is electrically connected to the serial port conversion circuit, and the first single chip is electrically connected to the second single chip; the first single chip microcomputer controls display data, the second single chip microcomputer is responsible for receiving instructions from an external cable and infrared remote control, the serial port conversion circuit converts the keyed-in instructions and inputs the converted instructions into the second single chip microcomputer, the second single chip microcomputer converts the instructions into internal codes and sends the internal codes to the first single chip microcomputer which is responsible for displaying data, the first single chip microcomputer processes the internal codes and sends the display data row selection and parallel data to the logic conversion unit 2, and column selection and display switch commands are sent to the signal conversion unit 3; in addition, a serial port conversion circuit in the main control unit 1 is connected with a standard RS-232 interface, sends an interface signal to the single chip microcomputer, completes the affairs of burning, control command input and the like, and is also responsible for controlling the two LED lamps and used for displaying remote control flicker and normal work indication.
The logic conversion unit 2 is composed of an EPLD and a peripheral circuit, generates a data latch signal for LED array display, a data transmission clock, row gating and the like through the processing of an internal programmable logic after receiving data row selection and parallel data sent by the main control unit 1, and sends the data latch signal, the data transmission clock, the row gating and the like to the signal conversion unit 3; transmitting the contents such as serial data to the signal driving unit 4; the unit comprises a power interface and a voltage conversion circuit of the whole single board, a remote controller receiving circuit, a line control receiving circuit and the like.
Referring to fig. 3a to 3e, the signal conversion unit 3 is composed of a decoder and a driver device, and is responsible for decoding the row strobe signal into a row signal required by the LED array, and controlling the high-power MOSFET to drive the LED array to generate a driving current signal of the LED; meanwhile, the data latch signal from the logic conversion unit 2 is pushed by the driver together with the data transmission clock and the row strobe signal, and is transmitted to the signal driving unit 4.
Referring to fig. 4, the signal driving unit 4 is composed of a serial-to-parallel converter, and is responsible for data driving of 16 rows of LEDs in the LED array, and the unit internally processes serial data, a data clock, and a data latch signal to form 2.5MS row scan data for polling and controlling the LED arrays of the display unit 5 and the display unit 6.
Referring to fig. 5 and 6, the first display unit and the second display unit 6 are formed by an array of 512 LEDs, and the LEDs form a display area with 16 rows/32 dot matrix, and are used for dynamically refreshing the display area according to the requirements of customers and responding to external infrared and line control signals.
To sum up, the utility model adopts the LED lattice to form the dynamic display LED full-lattice dynamic taxi indicator, realizes the display of various different state information by controlling the LED lattice, and the passenger can obtain more specific state information from the taxi indicator, which is beneficial to the passenger to take the taxi; in addition, the LED dot matrix display is adopted, so that the taxi indicator has higher brightness, can clearly display the current running state of a taxi, and is convenient for passengers to identify; meanwhile, the LED dot matrix is more energy-saving and environment-friendly, and the service life is long.
The above description is only for the preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention. Within the scope of the technical idea of the present invention, various modifications and alterations can be made, and any person skilled in the art can make modifications, amendments or equivalent replacements according to the above description, all belonging to the protection scope of the present invention.
Claims (4)
1. The utility model provides a full dot matrix of LED developments taxi sign, it includes the base and sets up the display board on the base, its characterized in that: the display board comprises an LED dot matrix display screen and a control circuit for controlling the LED dot matrix display screen.
2. The LED full-lattice dynamic taxi indicator of claim 1, wherein: the control circuit comprises a main control unit, a logic conversion unit, a signal driving unit and a display unit; wherein,
the main control unit is respectively electrically connected with the logic conversion unit and the signal conversion unit, receives an instruction input from the outside, converts the instruction into a control signal for controlling display and corresponding display data, and outputs the control signal and the display data to the logic change unit and the signal conversion unit;
the logic conversion unit is electrically connected with the signal conversion unit; the logic conversion unit generates row refreshing data, column refreshing data and control signals which can be received by the display unit after logically processing the received control signals and the display data, and sends the row refreshing data, the column refreshing data and the control signals to the signal conversion unit;
the signal conversion unit is electrically connected with the signal driving unit, processes the received row refreshing data, the row refreshing data and the control signal to generate a row driving signal required by the display unit, generates serial data and corresponding frame row synchronization and latch information at the same time, and sends the row driving signal, the serial data and the corresponding frame row synchronization and latch information to the signal driving unit;
the signal driving unit is electrically connected with the display unit and latches the received serial data, converts the serial data into corresponding display driving data and then sends the display driving data to the display unit;
the display unit is electrically connected with the signal driving unit, receives the display driving data and dynamically refreshes the displayed data in the display area.
3. The LED full-lattice dynamic taxi indicator of claim 2, wherein: the display unit comprises a first display unit and a second display unit, and the first display unit and the second display unit are respectively electrically connected with the signal driving unit; the first display unit and the second display unit are both array display modules formed by a plurality of LEDs.
4. The LED full-lattice dynamic taxi indicator of claim 2, wherein: the main control unit comprises a first single chip microcomputer, a second single chip microcomputer, a control interface circuit and a serial port conversion circuit, wherein the control interface circuit is electrically connected with the first single chip microcomputer, the serial port conversion circuit is electrically connected with the serial port conversion circuit, and the first single chip microcomputer is electrically connected with the second single chip microcomputer; the serial port conversion circuit converts the input instruction and inputs the converted instruction to the second single chip microcomputer, the second single chip microcomputer converts the instruction into an internal code and sends the internal code to the first single chip microcomputer, the first single chip microcomputer processes the internal code and then selects the display data row and sends the parallel data to the logic change unit, and the column selection and display switch command is sent to the signal conversion unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220233736XU CN202905111U (en) | 2012-05-23 | 2012-05-23 | A dynamic taxi indicator using a LED with full dot matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220233736XU CN202905111U (en) | 2012-05-23 | 2012-05-23 | A dynamic taxi indicator using a LED with full dot matrix |
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| CN202905111U true CN202905111U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220233736XU Expired - Fee Related CN202905111U (en) | 2012-05-23 | 2012-05-23 | A dynamic taxi indicator using a LED with full dot matrix |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510935A (en) * | 2018-05-30 | 2018-09-07 | 上海应用技术大学 | A kind of mining LED presentation of information control circuit |
| CN109941186A (en) * | 2019-03-28 | 2019-06-28 | 江苏沁恒股份有限公司 | Automobile tail light display system and method |
-
2012
- 2012-05-23 CN CN201220233736XU patent/CN202905111U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510935A (en) * | 2018-05-30 | 2018-09-07 | 上海应用技术大学 | A kind of mining LED presentation of information control circuit |
| CN108510935B (en) * | 2018-05-30 | 2023-07-18 | 上海应用技术大学 | Mining LED information display control circuit |
| CN109941186A (en) * | 2019-03-28 | 2019-06-28 | 江苏沁恒股份有限公司 | Automobile tail light display system and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20150523 |
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| EXPY | Termination of patent right or utility model |