CN208985653U - A kind of wireless image receives display circuit and device - Google Patents
A kind of wireless image receives display circuit and device Download PDFInfo
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- CN208985653U CN208985653U CN201821460855.2U CN201821460855U CN208985653U CN 208985653 U CN208985653 U CN 208985653U CN 201821460855 U CN201821460855 U CN 201821460855U CN 208985653 U CN208985653 U CN 208985653U
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Abstract
The utility model provides a kind of wireless image and receives display circuit and device, including RF radio circuit, microprocessor and display driver circuit；The RF radio circuit is connect by spi bus with the microprocessor；The microprocessor is connect with the display driver circuit, exports image information by the display driver circuit, the beneficial effects of the utility model are: strong antijamming capability, long transmission distance, signal message amount is big, is widely used, and is easy to extend, structure is simple.
Description
Technical field
The utility model relates to the electronic bin tag system that image in wireless communication field is shown, in particular to a kind of use
Image displaying circuit is received based on high frequency technique, low-power consumption spi bus in wireless communication system.
Background technique
Electronic bin tag system (Electronic Shelf Label System, ESLs) is that one kind is placed on commodity
It, being capable of the merchandise newss such as real-time reception price, and the applying electronic for passing through electronic display screen displays by wireless communication on shelf
System.Current most popular RF radio frequency part is low frequency, and general frequency is no more than 300MHz, and signal message amount is small, is resisted dry
It is poor to disturb ability, transmission range is close, and application range is small.Electronic display uses screen more, and color is single, man-machine interaction experience
Difference.
Summary of the invention
In view of the shortcomings of the prior art, the utility model provides a kind of based on high frequency technique, low-power consumption spi bus
Wireless image receives display circuit.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
Wireless image receives display circuit
RF radio circuit, microprocessor (MCU) and display driver circuit；
The RF radio circuit is connect by spi bus with the microprocessor；
The microprocessor is connect with the display driver circuit, exports image information by the display driver circuit.
The low frequency RF radio frequency part of abandoning tradition, using high frequency, strong antijamming capability, long transmission distance, signal message amount
Greatly, it is widely used.
Further, the RF radio circuit includes RF radio frequency receiver circuitry (RF Receiver) and baseband circuit
(Baseband)；
RF Receiver is responsible for the filtering of signal, modulation；Baseband is responsible for the processed information of RF Receiver
Processing feeds back to Micro-processor MCV module by SPI interface.
The signal that the RF radio circuit is arranged for receive is filtered, modulates, and is transmitted to the base band
Circuit；
The baseband circuit is arranged for receiving signal from the RF radio circuit and is transmitted to by the spi bus
The microprocessor.
Further, the RF RF receiving circuit includes
Sequentially connected antenna, amplifier, filter, modulator；
The antenna is arranged for receiving high-frequency signal and is transmitted to the amplifier；
The amplifier is arranged for receiving signal from the antenna, and the filter is transmitted to after amplification；
The filter is arranged for receiving amplified signal from the amplifier, is filtered and is transmitted to institute
State modulator；
The output end of the modulator is connect with the baseband circuit, and the modulator is arranged for from the filter
It receives through filtered signal, is modulated and is transmitted to the baseband circuit.
Preferably, amplifier selects low-noise amplifier (LNA), is done with reducing the noise of amplifier itself to signal
It disturbs, optimization signal transmission.
Preferably, the modulator is GFSK Gaussian Frequency Shift Keying modulator (GFSK Modulator), input data through height
After the filtering of this low-pass filter premodulated, then carry out the digital modulation mode of FSK modulation.It while keeping constant amplitude,
The frequency spectrum of modulated signal can be controlled by changing the three dB bandwidth of gauss low frequency filter, there is permanent width envelope, power
The advantages that spectrum is concentrated, frequency spectrum is relatively narrow, optimization signal transmission.
The baseband circuit includes base band bus, and connect respectively with the base band bus baseband engine, FIFO, base
Band SPI interface and register；
The baseband engine is used to receive signal from the RF RF receiving circuit；
The base band SPI interface is arranged for the output of signal.
Further, the baseband engine has ShockBurst and two kinds of operating modes of Enhance ShockBurst,
Preferably, the handshake of the transmission of data more than Enhanced ShockBurst Mode ratio ShockBurst Mode can protect
Demonstrate,prove the reliability of data transmission.
The microprocessor includes bus, and connect respectively with the bus SPI interface, the port I/O, CPU.
The port I/O of the microprocessor have it is multiple, can the port I/O determine according to actual needs form.
Further, the bus includes APB bus and/or ahb bus.
AHB is mainly used for the connection between high-performance module；APB is mainly used for the company between the periphery peripheral hardware of low bandwidth
It connects.
The utility model additionally provides a kind of wireless image receiving and displaying device, and there is wireless image as described above to receive
Display circuit.It further include Electronic Paper screen.
The output end that the wireless image receives the display driver circuit of display circuit is connect with the Electronic Paper screen
Preferably, which is color electric paper screen.
Whole device is powered by power module,
Further, power module is button cell.
To sum up, RF radio circuit carries out data interaction using spi bus and Micro-processor MCV, and onboard antenna realizes high frequency
Air interface；Micro-processor MCV module, which is chosen, to be had spi bus interface and is rich in the port I/O abundant, and peripheral circuit is facilitated
With the extension of memory；Driver module one end connect Micro-processor MCV, the other end connect Electronic Paper screen Source drive and
Gate driver；Power module is powered using button cell；Whole modules constitute wireless receiving image display device.
The utility model has the advantages and positive effects of: due to the adoption of the above technical scheme, having the advantage that
1, the low frequency RF radio frequency part of abandoning tradition, using high frequency, strong antijamming capability, long transmission distance, signal message
Amount is big, is widely used.
2, traditional black and white paper screen is substituted using color electric paper screen, optimizes human-computer interaction interface.
3, portable strong, can be modified according to display image actual demand to MCU program, and facilitate peripheral circuit and
The extension of memory；
4, it is realized using programming device, structure is simple, high reliablity, low in cost.
Detailed description of the invention
Fig. 1 is the single unit system functional block diagram of an embodiment of the present invention
Fig. 2 is the RF radio circuit schematic diagram of an embodiment of the present invention
Specific embodiment
As shown in Figure 1, an embodiment of the utility model provides a kind of wireless image receiving and displaying device,
Display circuit and electronic display are received including wireless image；
Wireless image receives display circuit
RF radio circuit, Micro-processor MCV, and display driving.
As shown in Fig. 2, RF radio circuit includes RF RF receiving circuit (RF Receiver) and baseband circuit
(Baseband)
RF RF receiving circuit includes sequentially connected antenna, LNA amplifier, receiving filter and GFSK modulator.
In the present embodiment, preferably, amplifier selects LNA amplifier, to reduce the noise pair of amplifier itself
The interference of signal, optimization signal transmission.
In the present embodiment, preferably, modulator selects GFSK filter, input data through Gassian low-pass filter
After the filtering of device premodulated, then carry out the digital modulation mode of FSK modulation.It, can be by changing while keeping constant amplitude
The three dB bandwidth for becoming gauss low frequency filter controls the frequency spectrum of modulated signal, there is permanent width envelope, power spectrum to concentrate, frequency
It composes the advantages that relatively narrow, optimization signal transmission.
Baseband circuit includes bus and baseband engine, FIFO, base band SPI interface, register.
In the present embodiment, preferably, baseband engine is with Enhanced ShockBurst Mode work, to guarantee
The reliability of data transmission.
Micro-processor MCV includes bus, and connect respectively with bus SPI interface, the port I/O, CPU.
In the present embodiment, bus includes APB bus and ahb bus,
AHB is mainly used for the connection between high-performance module；APB is mainly used for the company between the periphery peripheral hardware of low bandwidth
It connects.
In the present embodiment, Micro-processor MCV has a variety of ports I/O, can be selected according to actual needs.
The output end of display driver circuit and the Source drive of electronic display and door of wireless image reception display circuit
Driver connection.
In the present embodiment, preferably, electronic display uses color electric paper screen.
Whole device is powered by power module,
Further, in the present embodiment, power module is button cell.
The course of work of an embodiment of the present invention:
Onboard antenna is air communication interface in RF radio circuit, receives and comes from specific high-frequency signal, and radio circuit will connect
The high-frequency signal received is modulated processing RF Receiver Module and is divided into two parts RF Receiver and Baseband.RF
Receiver is responsible for the filtering of signal, modulation；Baseband is responsible for the processed Information procession of RF Receiver passing through SPI
Interface feeds back to Micro-processor MCV module.RF Receiver Module is in standby, once antenna receives matching frequency range
Signal, radio-frequency module are just started to work.High-frequency signal first passes around receiving filter (RX Filter) and carries out signal filtering, obtains
To cleaner signal, then obtained signal is modulated, is transmitted to receiving channel (RX FIFOs) and baseband engine
(Baseband Engine), corresponding register (Register map) is started to work at this time, finally by modulated reception number
Word signal feeds back to Micro-processor MCV, the information processing that Micro-processor MCV will receive, last micro- place by SPI interface
Reason device MCU by driver module driving electronic display need to information to be shown show.Whole modules be all by
Power module power supply, entire reception display process power consumption consumption is very low, and under non-reception information state, electrical screen can persistently be shown
Show the image that need to be shown, hardly power consumption during this.
The embodiments of the present invention are described in detail above, the content is only the preferable reality of the utility model
Example is applied, should not be considered as limiting the scope of the present invention.Equalization made according to the scope of application of this utility model
Variation and improvement etc., should still belong within the patent covering scope of the utility model.
Claims (10)
1. a kind of wireless image receives display circuit, it is characterised in that: including RF radio circuit, microprocessor and display driving
Circuit；
The RF radio circuit is connect by spi bus with the microprocessor；
The microprocessor is connect with the display driver circuit, exports image information by the display driver circuit.
2. a kind of wireless image according to claim 1 receives display circuit, it is characterised in that:
The RF radio circuit includes RF radio frequency receiver circuitry and baseband circuit；
The signal that the RF radio circuit is arranged for receive is filtered, modulates, and is transmitted to the baseband circuit；
The baseband circuit is arranged for receiving signal from the RF radio circuit and is transmitted to by the spi bus described
Microprocessor.
3. a kind of wireless image according to claim 2 receives display circuit, it is characterised in that:
The RF RF receiving circuit includes
Sequentially connected antenna, amplifier, filter, modulator；
The antenna is arranged for receiving high-frequency signal and is transmitted to the amplifier；
The amplifier is arranged for receiving signal from the antenna, and the filter is transmitted to after amplification；
The filter is arranged for receiving amplified signal from the amplifier, is filtered and is transmitted to the tune
Device processed；
The output end of the modulator is connect with the baseband circuit, and the modulator is arranged for receiving from the filter
Through filtered signal, it is modulated and is transmitted to the baseband circuit.
4. a kind of wireless image according to claim 3 receives display circuit, it is characterised in that:
The amplifier is low-noise amplifier.
5. a kind of wireless image according to claim 3 receives display circuit, it is characterised in that:
The modulator is GFSK Gaussian Frequency Shift Keying modulator.
6. a kind of wireless image according to claim 2 receives display circuit, it is characterised in that:
The baseband circuit includes base band bus, and the baseband engine, FIFO, the base band that connect respectively with the base band bus
SPI interface and register；
The baseband engine is used to receive signal from the RF RF receiving circuit；
The base band SPI interface is arranged for the output of signal.
7. a kind of wireless image as claimed in any of claims 1 to 6 receives display circuit, it is characterised in that:
The microprocessor includes bus, and connect respectively with the bus SPI interface, the port I/O, CPU.
8. a kind of wireless image according to claim 7 receives display circuit, it is characterised in that:
The bus includes APB bus and/or ahb bus.
9. a kind of wireless image receiving and displaying device, it is characterised in that:
Display circuit and Electronic Paper screen are received including the wireless image as described in any one of claim 1-8；
The output end that the wireless image receives the display driver circuit of display circuit is connect with the Electronic Paper screen.
10. a kind of wireless image receiving and displaying device according to claim 9, it is characterised in that:
The Electronic Paper screen is color electric paper screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821460855.2U CN208985653U (en) | 2018-09-07 | 2018-09-07 | A kind of wireless image receives display circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821460855.2U CN208985653U (en) | 2018-09-07 | 2018-09-07 | A kind of wireless image receives display circuit and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208985653U true CN208985653U (en) | 2019-06-14 |
Family
ID=66783502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821460855.2U Active CN208985653U (en) | 2018-09-07 | 2018-09-07 | A kind of wireless image receives display circuit and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208985653U (en) |
-
2018
- 2018-09-07 CN CN201821460855.2U patent/CN208985653U/en active Active
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