CN102289257B - Main board interface circuit of police identity recognizer - Google Patents
Main board interface circuit of police identity recognizer Download PDFInfo
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- CN102289257B CN102289257B CN201110232814.4A CN201110232814A CN102289257B CN 102289257 B CN102289257 B CN 102289257B CN 201110232814 A CN201110232814 A CN 201110232814A CN 102289257 B CN102289257 B CN 102289257B
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Abstract
The invention relates to a main board interface circuit of a police identity recognizer. The main board interface circuit comprises an ARM11 core board circuit, a memory circuit, a battery power supply circuit, a light crystal display (LCD) circuit, a camera circuit, a trans-flash (TF) card memorization circuit, a loudspeaker circuit, a receiver circuit, a microphone (MIC) circuit, a universal serial bus (USB) interface circuit, a keyboard interface circuit, a radio frequency identification (RFID) card reading circuit, a Bluetooth circuit, an SAM decryption module and a global positioning system (GPS) circuit, wherein the ARM11 core board circuit is respectively in two-way communication connection with the memory circuit, the LCD circuit, the camera circuit, the TF card memorization circuit, the USB interface circuit, the keyboard interface circuit, the RFID card reading circuit, the Bluetooth circuit and the GPS circuit; the ARM11 core board circuit is also respectively in two-way communication connection with the loudspeaker circuit, the receiver circuit and the MIC circuit; the battery power supply circuit is connected with the ARM11 core board circuit; and the SAM decryption module is in two-way communication connection with the RFID card reading circuit. The main board interface circuit of the police identity recognizer has functions of recognition and comparison of two generations of identity cards, voice data communication, photo-taking and image-shooting, GPS, Bluetooth transmission and the like.
Description
Technical field
The present invention relates to electronic technology field, especially relate to a kind of police identity recognition instrument mainboard interface circuit.
Background technology
I.D. (comprising a generation resident identification card, second-generation resident identification card) is the important documents recording individual essential information.First generation I.D. belongs to traditional depending on reading certificate, can only, with intuitively depending on reading checking, be difficult to judge the certificate true and false, second generation identity card have employed non-contact IC card technique, having machine-readable and depending on reading two kinds of functions, the interchange of personally identifiable information can be realized, the safety verification of identity information.
All need to hold identity document when the places of unit such as bank, security, customs, the industrial and commercial tax, civil aviation handle most of business.Nowadays, offender often uses false I.D. certificate to carry out economic crime, in order to ensure normally carrying out of economic activity, safeguarding social safety, being configured with China second-generation identity card identifier in public security system.
Police handheld China second-generation identity card identifier conventional at present can only obtain the identity information of machine intimate TF card stored data base, can not carry out real-time comparison; When comparing, the database of comparison is not up-to-date, can only compare, likely cause information inaccurate with the database in current TF card; And can only Certification of Second Generation be identified, function singleness.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of Large Copacity, multi-functional, manually can input generation ID (identity number) card information, carry out the identification of China second-generation identity card and real-time comparison, voice data communication, take pictures make a video recording, GPS, Bluetooth transmission, the police identity recognition instrument mainboard interface circuit that immediately communicates with command centre.
For achieving the above object, present invention employs following technical scheme:
A kind of police identity recognition instrument mainboard interface circuit, comprise: ARM11 core board circuit, memory circuitry, battery feed circuit, LCD liquid crystal display screen circuit, camera circuit, TF card memory circuit, horn circuit, handset circuitry, MIC PAC circuit, usb circuit, finger-board interface circuit, RFID card reading circuit, Bluetooth circuit, SAM deciphering module, GPS circuit, it is characterized in that described ARM11 core board circuit respectively with memory circuitry, LCD liquid crystal display screen circuit, camera circuit, TF card memory circuit, usb circuit, finger-board interface circuit, RFID card reading circuit, Bluetooth circuit, the two-way communication of GPS circuit connects, described ARM11 core board circuit also respectively with horn circuit, handset circuitry, Mac circuit one-way communication connects, described battery feed circuit is connected with ARM11 core board circuit, for its power supply, described SAM deciphering module is connected with the two-way communication of RFID card reading circuit.
Memory circuitry, LCD liquid crystal display screen circuit, camera circuit are connected with ARM11 core board circuit respectively by data line, address wire, TF card memory circuit is connected with the SD card interface of ARM11 core board circuit, and usb circuit, Bluetooth circuit are connected with ARM11 core board circuit respectively by UART interface.
ARM11 core board circuit comprises: ARM11 core board, described ARM11 core board comprises 4 tunnel UART interface, 2 high speed SPI controllers, 2 I2C interfaces, USB interface, SD card interface, 2 groups of PWM export, and 14 groups of GPIO export, 51 interrupt sources, LCD liquid crystal display screen control interface, DRAM data line DRAM_D0 ~ DRAM_D15, DRAM address wire DRAM_A0 ~ DRAM_A13, camera control interface, NAND data line NAND_D0 ~ NAND_D15, NAND address wire NAND_D0 ~ NAND_D15, finger-board IO interface.
Memory circuitry comprises: DRAM storer U102A, Nand_flash storer U102B, described DRAM storer U102A comprises data line DRAM_D0 ~ DRAM_D15, address wire DRAM_A0 ~ DRAM_A13, described Nand_flash storer U102B comprises data line NAND_D0 ~ NAND_D15, address wire NAND_D0 ~ NAND_D15.
Battery feed circuit comprises: battery filter regulator circuit, system works indicating circuit, battery connection circuitry, described battery filter regulator circuit comprises electric capacity C428, C429, C430, C428, C429, C430 is in parallel, a termination VBAT voltage, one end ground connection, and described system works indicating circuit comprises LED D502, D503, D504, D502 is yellow light-emitting diode, a termination VBAT voltage, a terminating resistor R502, D503 is red light emitting diodes, one termination VBAT voltage, a terminating resistor R503, D504 are green LED, one termination VBAT voltage, one terminating resistor R504, by the duty of 3 LED indication mechanisms, described battery connection circuitry comprises filter capacitor C433, C434, C436, battery connector J501, electric capacity C433, C434, C436 is in parallel, a termination VBAT voltage, one end ground connection, and battery connector J501 comprises VBAT interface, STATUS interface, GND interface, VBAT interface connects VBAT voltage, and STATUS interface connects BATT_TMP, GND interfacing ground through resistance R511, and battery connector J501 plays connection function to battery and system, enables the electric current of inside battery smoothly to system power supply.
LCD liquid crystal display screen circuit comprises LCD interface circuit, LCD backlight circuit, described LCD interface circuit comprises LCD interface J602, filtering circuit, J602 comprises data bus interface LCD_D0 ~ LCD_D17, line synchronizing signal interface HSYNC, frame synchronizing signal interface VSYNC, interface clock signal VOTCLK, Enable Pin interface ENABLE, power supply signal interface VCC1, VCC2, earth signal interface GND1, GND2, GND3, GND4, reset signal interface RESET, LED anode interface LED_A1, LED_A2, LED negative pole interface LED_K1, LED_K2, LED screen initial configuration port interface CSB, SCL, SDI, J602 are by data line interface LCD_D0 ~ LCD_D17, HSYNC, VSYNC, DOTCLK, ENABLE, RESET, CSB, SCL, SDI interface is connected with ARM11 core board circuit, and ARM11 core board passes through CSB, SCL, SDI interface carries out the initial configuration of screen, and filtering circuit comprises LB602, electric capacity C601, C602, C603, electric capacity C602, C603 is in parallel, and one end is connected with LB602, one end ground connection, C603 one end is connected with LB602 accesses J602 power supply signal end, other end ground connection, and described LCD backlight circuit comprises serial backlight driving chip U602, chip U602 comprises power interface VDD, overvoltage protection interface VOUT, enable interface EN, switch interface LX, ground interface GND, feedback voltage interface FB, EN interface is connected with POW_OUT1 signal, LX, VOUT is as the positive pole of LED, and FB, as the negative pole of LED, controls the light on and off of screen backlight by LCD backlight circuit, regulate the brightness of backlight.
Camera circuit comprises utilizing camera interface J701, interface J701 comprises data line interface CAM_D0 ~ CAM_D7, flashlamp interface LED_A1, LED_A2, I2C bus control interface SIO_D, SIO_C, dormant state interface PWDN, pixel clock output interface PCLK, system input clock interface XCLK, digital power interface DVDD, analog power interface AVDD, frame synchronizing signal interface VSYNC, line synchronizing signal interface HSYNC, I/O power supply DOVDD, digitally interface DGND, DGND1, system power supply VAAM, interface J701 passes through CAM_D0, CAM_D1, CAM_D2, CAM_D3, CAM_D4, CAM_D5, CAM_D6, CAM_D7, PCLK, HSYNC, VSYNC, XCLK and ARM11 core board circuit is connected.
TF card memory circuit comprises TF card J702, J702 comprises data-interface SD_D0 ~ SD_D3, clock interface SD_CLK, power interface VDD, VSS, ground interface GND, command interface SD_CMD, J702 are connected with ARM11 core board circuit by SD_CLK, SD_CMD, SD_D0, SD_D1, SD_D2, SD_D3 interface.
Horn circuit comprises audio frequency amplification chip U801, U802, chip U801 comprises input interface SPK_P, SPK_N, output interface OUTN, OUTP, shunt capacitance interface BP, earth signal interface GND, GND_B, power supply signal interface VCC, the input interface SPK_P of switching signal interface SHDN_N, U801 and positive pole input matching network C839, R812 is connected, input interface SPK_N and negative pole input matching network C840, R813 is connected, power supply signal interface VCC and filter capacitor C842, C843 is connected, and U802 chip comprises input interface LINEOUT_P, LINEOUT_N, output interface OUTN, OUTP, shunt capacitance interface BP, earth signal interface GND, GND_B, power supply signal interface VCC, the input interface LINE_P of switching signal interface SHDN_N, chip U802 and positive pole input matching network C846, R819 is connected, input interface LINE_N and negative pole input matching network C844, R820 is connected, power supply signal interface VCC and filter capacitor C847, C848 is connected, and horn circuit 7 passes through SPK_P, SPK_N, LINEOUT_P, LINEOUT_N, SHDN_N signal is connected with ARM11 core board circuit, by the mode adopting twin loudspeaker to export, improves audio output effect.
Handset circuitry comprises filter network C823, C837, C838, C823 mono-termination RCV_P signal, another termination RCV_N signal, C837 mono-termination RCV_P signal, other end ground connection, C838 mono-termination RCV_N signal, other end ground connection, handset circuitry 8 is connected with ARM11 core board circuit by RCV_P, RCV_N signal.
MIC PAC circuit comprises biasing circuit, filter network, described biasing circuit comprises electric capacity C834, resistance R804, R801, R810, R805, resistance R804 mono-termination MICBIAS signal, the other end and R801, C834 is connected, resistance R805 one end ground connection, the other end and C834, R810 is connected, the R801 other end exports EXT_MIC_P as the positive pole of microphone, the R810 other end exports EXT_MIC_N as the negative pole of microphone, described filter network comprises positive pole filter network C805, C830, negative pole filter network C804, C831, the positive pole input MIC_P of C805 mono-termination microphone, another termination C830, C830 other end ground connection, the negative pole input MIC_N of C804 mono-termination microphone, another termination C831, C831 other end ground connection.
Usb circuit comprises USB connector J901, J901 comprises serial interface UART4_RSRXD, UART4_RSTXD, Differential Input interface USB2_D+, USB2_D-, ground interface, power interface VBUS, usb circuit is connected by interface UART4_RSRXD, UART4_RSTXD and ARM11 core board circuit.
Finger-board interface circuit comprises connector J902, J902 comprises finger-board input interface KYPD_IN0 ~ KYPD_IN4, finger-board output interface KYPD_OUT0 ~ KYPD_OUT4, serial interface UART1_RXD, UART1_TXD, Mike's output interface EXT_MIC_P, EXT_MIC_N, loudspeaker input interface SPK_P, SPK_N, LINEOUT_P, LINEOUT_N, USB Differential Input interface USB1D+, USB1D-.
RFID card reading circuit comprises RFID identification circuit, RFID feed circuit, described RFID identification circuit comprises RFID identification chip U0501, U0501 comprises antenna driver interface TX1, TX2, reference voltage interface VMID, antenna input interface RX, transmitter supply voltage interface TVDD, transmitter power supply ground interface TVSS, simulation part independent power source voltage interface AVDD, simulation part independent power source ground interface AVSS, numerical portion supply voltage interface DVDD, numerical portion power supply ground interface DVSS, input further input interface OSCIN, export further and export OSCOUT, serial data line interface SDA, the enable interface I2C of I2C, outside addressing interface EA, data line interface D1 ~ D7, TX1 interface and input matching network C0505, L0501, C0503, C0501 is connected, TX2 interface and input matching network C0517, L0502, C0516, C0504 is connected, OSCIN, OSCOUT is connected with crystal oscillating circuit, described RFID feed circuit comprise LDO change-over circuit chip U0503, U0503 comprises input interface VIN, output interface VOUT, enable interface EN, ground interface GND, input interface VIN and input filter network C 0509, C0510 is connected, and access VBAT signal, output interface VOUT is connected for RFID identification chip provides three-way power signal AVDD with output filtering network, TVDD, PVDD, by RFID feed circuit for chip U0501 provides clean power supply.
Bluetooth circuit comprises bluetooth cpu circuit, bluetooth filter circuit, described bluetooth cpu circuit comprises Bluetooth chip U1201, Bluetooth chip U1201 comprises radio frequency interface RF_P, RF_N, TCXO external clock input interface XTAL_IN, reference voltage decoupling interface LO_REF, serial port UART2_RXD, UART2_TXD, synchronous data interface PCM_IN, PCM_OUT, PCM_SYNC, PCM_CLK, programmable input and output line interface PIO_0 ~ PIO_9, reseting interface RST#, digital power interface VDD_PADS, internal digital circuit power interface VDD_CORE, RF circuit power interface VDD_RADIO, interface VSS_ANA in analog, RF circuit ground interface VSS_RADIO, digital circuit ground interface VSS_DIG, bluetooth cpu circuit passes through UART2_RXD, UART2_TXD, PCM_IN, PCM_OUT, PCM_SYNC, PCM_CLK interface is connected with ARM11 core board circuit, bluetooth filter circuit comprises bluetooth filter chip Z804, antenna element, Z804 comprises direct current signal interface DC_FEED, earth signal interface GND1, GND6, GND8, balance IO interface BALA_IO1, BALA_IO2, non-equilibrium IO interface UNBALA_LO, BALA_IO1 is connected with the BT_RF_P interface of chip U1201, BALA_IO2 is connected with the BT_RF_N interface of chip U1201, UABALA_IO is connected with antenna element, antenna element comprises U803, matching network C1221, L1201, when system uses Bluetooth transmission information, Z804 opens, by U803 and other bluetooth devices.
Beneficial effect of the present invention: the present invention has manually can input generation ID (identity number) card information, China second-generation identity card identification and comparison, voice data communication, take pictures make a video recording, GPS, Bluetooth transmission, immediately with the function such as command centre communicates, when carrying out identification, adopt GSM/EVD0 3G network, the database of comparison upgrades at any time, comparison result is more accurate, identification RFID part adopts double card design, can support the identification of the identification of two generations and M1 card, can realize a tractor serves several purposes.
Accompanying drawing explanation
Fig. 1 is hardware structure figure of the present invention;
Fig. 2 a is ARM11 core board cpu circuit of the present invention;
Fig. 2 b is ARM11 core board interface circuit of the present invention;
Fig. 3 is memory circuitry of the present invention;
Fig. 4 is battery feed circuit of the present invention;
Fig. 5 is LCD interface circuit of the present invention;
Fig. 6 is LCD backlight circuit of the present invention;
Fig. 7 is camera circuit of the present invention;
Fig. 8 is TF card memory circuit of the present invention;
Fig. 9 is horn circuit of the present invention;
Figure 10 is handset circuitry of the present invention;
Figure 11 is MIC PAC circuit of the present invention;
Figure 12 is usb circuit of the present invention;
Figure 13 is finger-board interface circuit of the present invention;
Figure 14 is RFID identification circuit of the present invention;
Figure 15 is RFID feed circuit of the present invention;
Figure 16 is bluetooth cpu circuit of the present invention;
Figure 17 is bluetooth filtering circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Circuit according to Fig. 1, the present invention comprises ARM11 core board circuit 1, memory circuitry 2, battery feed circuit 3, LCD liquid crystal display screen circuit 4, camera circuit 5, TF card memory circuit 6, horn circuit 7, handset circuitry 8, Mac circuit 9, usb circuit 10, finger-board interface circuit 11, RFID card reading circuit 12, Bluetooth circuit 13, SAM deciphering module 14, GPS circuit 15.
Circuit according to Fig. 2, ARM11 core board circuit 1 is connected with memory circuitry 2, LCD liquid crystal display screen circuit 4, camera circuit 5 respectively by data line, address wire, TF card memory circuit 6 is connected with the SD card interface of ARM11 core board circuit 1, usb circuit 10, Bluetooth circuit 13 are connected with ARM11 core board circuit 1 respectively by UART mouth, and wherein PWM_OUT1 Main Function is the adjustment realizing screen intensity; LCD_DE is that screen is enable, realizes lighting or closing of screen; SPI2_CLK, SPI2_DO, SPI2_CS1_N are screen initial configuration port, have influence on the color saturation etc. of screen.
Circuit according to Fig. 3, memory circuitry 2 is connected with ARM11 core board circuit, deposit a series of instruction code and the various resources needed for work, after boot system resets, ARM11, after chip reading and writing end gating, takes out instruction, carries out decoding, computing from memory, thus the work order of output coordinating each several part, realize the buffer memory of data.
Circuit according to Fig. 4,3 LED are used to refer to the duty of system, thus achieve the object of real-time display system duty.At the filter capacitor that feeder ear adds, for reducing the impact of battery input for system.
Circuit according to Fig. 5, adopts 3.5 inches of touch-screens, and the display of giant-screen and the mode of employing touch-screen, improve the operating experience of user greatly.A small capacitances in parallel on key signal line, well serves the protection of EMC, improves the display effect of lcd screen simultaneously.LCD screen adopts the RGB screen of current main flow, carries touch-screen, adopts 60pinFpc connector to connect.The filter network using LB602, C601 and C603 to form at screen power pack makes system power more totally to lcd screen, and ripple is less.LCD generally needs three clock signals: VSYNC, HSYNC, DOTVCLK.VSYNC is frame synchronizing signal, and before the scanning often carrying out a frame (i.e. a screen), this signal just effectively once, can be determined the field frequency of LCD, i.e. the number of times of screen-refresh per second by this signal.HSYNC is line synchronizing signal, and before the scanning often carrying out a line, just effectively once, can be determined the line frequency of LCD by this signal, namely screen per second from left to right scans the number of times of a line to this signal.DOTCLK is pixel clock signal.
Circuit according to Fig. 6, chip U602 input voltage: 2v to 6v; Output voltage: 24V; The frequency of operation of 3MHZ; Cut-off current is less than 1uA; Use sot23-6 encapsulation, volume is little, is convenient to design; Controlled the brightness regulation of lcd screen by the pwm signal of PWM_OUT1 simultaneously.LCD+ and LCD-receives the both positive and negative polarity above the serial LED of inside screen respectively.When control signal PWM_OUT1 can be high or be low by control LCD+, control the light on and off of screen backlight and regulate the brightness of backlight.
Circuit according to Fig. 7, uses J701 to connect camera and ARM11 core board, and when camera work, frame per second is indicated by HREF, VSYNC, XCLK, and clock generator exports the signal reading array row, the row sequentially in precharge and sampling array.Between precharge and sampling, the electricity of pixel reduces with the increase being exposed to the time in specific light, and Here it is the time shutter.Time shutter was controlled by the time interval of adjustment precharge and sampling.After the Pixel Data samples of row, be multiplied by corresponding gain by the positive side-play amount of mimic channel, then by the data of each pixel in analog to digital conversion output array.Complete after taking pictures, the data of shooting of taking pictures are processed to host CPU by these data line transfer of CAM_D0 to CAM_D7.For ensureing the normal operation of camera I2C, increase pull-up resistor R703, R704, VFLASH_LED is flashlamp power supply interface.
Circuit according to Fig. 8, SD_D0 to SD_D3 is the data line of TF cartoon letters, and the data interaction of TF card and CPU is completed by data line; SD_CLK is clock line, ensure that the proper communication of TF card and CPU; R706 ~ R711, serves the effect of impedance matching and protection TF card; TF adopts the design of twin voltage (1.8V/3.3V).
Circuit according to Fig. 9, chip U801, U802 have low noise, and the feature of low-power consumption, low static working current, reduces Overall Power Consumption greatly.Meanwhile, the mode adopting twin loudspeaker to export in the design, improves audio output effect.Meeting RV801 to RV804 at loudspeaker delivery outlet is ESD protective device, can effectively prevent electrostatic for the infringement of loudspeaker and audio frequency power amplifier.
Circuit according to Figure 10, adds filter network, effectively suppresses external interference.
Circuit according to Figure 11, R801, R804 provide bias voltage for MIC, C805 and C830 is that MIC inputs positive pole filter network, C804 and C831 is that MIC inputs negative pole filter network, effectively suppresses external interference.
Circuit according to Figure 12, adopts the 10pinMINI_USB of current main flow, and the USB data line on well compatible market, adds ESD protective device on the data line simultaneously, prevent extraneous static for the damage of CPU.Carry out communication by UART4_RSRXD and UART4_RSTXD serial interface and ARM11, adopt USB2.0 transmission, improve the transmission speed of system.
Circuit according to Figure 13, completes docking of mainboard and keyboard by plug connector, data is transmitted between keyboard and microprocessor.Use connector greatly to save the space of structural design, it also avoid FPC connector simultaneously and hold flimsy defect, provide guarantee for system works long-term effectively.
Circuit according to Figure 14, chip U0501 can realize identification and the reading of TYPEA and TYEPEB two kinds card simultaneously; Its antenna uses dual ended manner, and in order to driven antenna, chip U0501 provides the energy carrier wave of 13.56MHz by TX1 and TX2.Setting according to register modulates to sending data the signal obtaining sending.Card adopts the load-modulate of RF field to carry out corresponding.The signal of antenna pickup delivers to RX pin through antenna-matching circuit, and chip internal receiver detects signal and demodulation processing according to the setting of register, and then data are sent to parallel interface and are read by microcontroller.Chip uses independent Power supply to drive part, and in order to realize optimum performance, the simulation part of chip also uses independent power supply, and it is powered to oscillator, analog demodulator and decoder circuit.Chip digital part uses independent power supply.Reseting pin prohibits internal current source and clock and chip is thrown off from microcontroller bus interface.If RST discharges, chip performs power-up routine.27.12 MHz crystal oscillators are connected to OSCIN and OSCOUT by quick sheet internal buffer.
Circuit according to Figure 15, uses the LDO change-over circuit of Seiko, and the power supply of RFID adopts 3.3V to power.C0509 and C0510 is input filter, and C0511 is output filtering; L0503, L0504, L0505 respectively and C05014, C0513, C0512 form filter network and provide clean power supply for chip U0501.
Circuit according to Figure 16, Bluetooth chip U1201 volume is little, power is low, apply fairly widespread, working frequency range is the unified and open 2.4GHz industry in the whole world, science and medical science (Industrial, Scientific and Medical, ISM) frequency range, is connected with host CPU with pcm interface by UART2_RXD, UART2_TXD.
Circuit according to Figure 17, when system uses Bluetooth transmission information, Z804 opens, by U803 and other bluetooth devices.
Claims (13)
1. a police identity recognition instrument mainboard interface circuit, comprises: ARM11 core board circuit (1), memory circuitry (2), battery feed circuit (3), LCD liquid crystal display screen circuit (4), camera circuit (5), TF card memory circuit (6), horn circuit (7), handset circuitry (8), MIC PAC circuit (9), usb circuit (10), finger-board interface circuit (11), RFID card reading circuit (12), Bluetooth circuit (13), SAM deciphering module (14), GPS circuit (15), it is characterized in that described ARM11 core board circuit (1) respectively with memory circuitry (2), LCD liquid crystal display screen circuit (4), camera circuit (5), TF card memory circuit (6), usb circuit (10), finger-board interface circuit (11), RFID card reading circuit (12), Bluetooth circuit (13), GPS circuit (15) two-way communication connect, described ARM11 core board circuit (1) also respectively with horn circuit (7), handset circuitry (8), MIC PAC circuit (9) one-way communication connects, and described battery feed circuit (3) is connected with ARM11 core board circuit (1), and be its power supply, described SAM deciphering module (14) is connected with RFID card reading circuit (12) two-way communication,
Described ARM11 core board circuit (1) comprises: ARM11 core board U101, described ARM11 core board U101 comprises 4 tunnel UART interface, 2 high speed SPI controllers, 2 I2C interfaces, USB interface, SD card interface, 2 groups of PWM export, 14 groups of GPIO export, 51 interrupt sources, LCD liquid crystal display screen control interface, DRAM data line interface DRAM_D0 ~ DRAM_D15, DRAM address wire interface DRAM_A0 ~ DRAM_A13, camera control interface, NAND data line interface NAND_D0 ~ NAND_D15, NAND address wire interface NAND_D0 ~ NAND_D15, finger-board IO interface,
Described battery feed circuit (3) comprises: battery filter regulator circuit (16), system works indicating circuit (17), battery connection circuitry (18), described battery filter regulator circuit (16) comprises electric capacity C428, C429, C430, C428, C429, C430 is in parallel, a termination VBAT voltage, one end ground connection, and described system works indicating circuit (17) comprises LED D502, D503, D504, D502 is yellow light-emitting diode, a termination VBAT voltage, a terminating resistor R502, D503 is red light emitting diodes, one termination VBAT voltage, a terminating resistor R503, D504 are green LED, one termination VBAT voltage, one terminating resistor R504, by the duty of 3 LED indication mechanisms, described battery connection circuitry (18) comprises filter capacitor C433, C434, C436, battery connector J501, electric capacity C433, C434, C436 is in parallel, a termination VBAT voltage, one end ground connection, and battery connector J501 comprises VBAT interface, STATUS interface, GND interface, VBAT interface connects VBAT voltage, and STATUS interface connects BATT_TMP, GND interfacing ground through resistance R511, and battery connector J501 plays connection function to battery and system, enables the electric current of inside battery smoothly to system power supply.
2. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described memory circuitry (2), LCD liquid crystal display screen circuit (4), camera circuit (5) are connected with ARM11 core board circuit (1) respectively by data line, address wire, TF card memory circuit (6) is connected with the SD card interface of ARM11 core board circuit (1), and usb circuit (10), Bluetooth circuit (13) are connected with ARM11 core board circuit (1) respectively by UART interface.
3. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described memory circuitry (2) comprises: DRAM storer U102A, Nand_flash storer U102B, described DRAM storer U102A comprises data line DRAM_D0 ~ DRAM_D15, address wire DRAM_A0 ~ DRAM_A13, described Nand_flash storer U102B comprises data line NAND_D0 ~ NAND_D15, address wire NAND_D0 ~ NAND_D15.
4. one according to claim 1 police identity recognition instrument mainboard interface circuit, is characterized in that, described LCD liquid crystal display screen circuit (4) comprises LCD interface circuit (19), LCD backlight circuit (20), described LCD interface circuit (19) comprises LCD interface J602, filtering circuit (21), J602 comprises data line interface LCD_D0 ~ LCD_D17, line synchronizing signal interface HSYNC, frame synchronizing signal interface VSYNC, interface clock signal DOTCLK, Enable Pin interface ENABLE, power supply signal interface VCC1, VCC2, earth signal interface GND1, GND2, GND3, GND4, reset signal interface RESET, LED anode interface LED_A1, LED_A2, LED negative pole interface LED_K1, LED_K2, LED screen initial configuration port interface CSB, SCL, SDI, J602 are by data line interface LCD_D0 ~ LCD_D17, HSYNC, VSYNC, DOTCLK, ENABLE, RESET, CSB, SCL, SDI interface is connected with ARM11 core board circuit, and ARM11 core board passes through CSB, SCL, SDI interface carries out the initial configuration of screen, and filtering circuit (21) comprises LB602, electric capacity C601, C602, C603, electric capacity C602, C603 is in parallel, and one end is connected with LB602, one end ground connection, C603 one end is connected access chip J602 power supply signal end with LB602, other end ground connection, reduces the ripple of voltage by filtering circuit, described LCD backlight circuit (20) comprises serial backlight driving chip U602, and chip U602 comprises power interface VDD, overvoltage protection interface VOUT, enable interface EN, switch interface LX, ground interface GND, feedback voltage interface FB, EN interface is connected with POW_OUT1 signal, LX, VOUT is as the positive pole of LED, and FB, as the negative pole of LED, controls the light on and off of screen backlight by LCD backlight circuit, regulate the brightness of backlight.
5. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described camera circuit (5) comprises utilizing camera interface J701, J701 comprises data line interface CAM_D0 ~ CAM_D7, flashlamp interface LED_A1, LED_A2, I2C bus control interface SIO_D, SIO_C, dormant state interface PWDN, pixel clock output interface PCLK, system input clock interface XCLK, digital power interface DVDD, analog power interface AVDD, frame synchronizing signal interface VSYNC, line synchronizing signal interface HSYNC, I/O power supply DOVDD, digitally interface DGND, DGND1, system power supply VAAM, interface J701 passes through CAM_D0, CAM_D1, CAM_D2, CAM_D3, CAM_D4, CAM_D5, CAM_D6, CAM_D7, PCLK, HSYNC, VSYNC, XCLK and ARM11 core board circuit is connected.
6. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described TF card memory circuit (6) comprises TF card J702, J702 comprises data-interface SD_D0 ~ SD_D3, clock interface SD_CLK, power interface VDD, VSS, ground interface GND, command interface SD_CMD, J702 are connected with ARM11 core board circuit by SD_CLK, SD_CMD, SD_D0, SD_D1, SD_D2, SD_D3 interface.
7. one according to claim 1 police identity recognition instrument mainboard interface circuit, is characterized in that, described horn circuit (7) comprises audio frequency amplification chip U801, U802, chip U801 comprises input interface SPK_P, SPK_N, output interface OUTN, OUTP, shunt capacitance interface BP, earth signal interface GND, GND_B, power supply signal interface VCC, the input interface SPK_P of switching signal interface SHDN_N, U801 and positive pole input matching network C839, R812 is connected, input interface SPK_N and negative pole input matching network C840, R813 is connected, power supply signal interface VCC and filter capacitor C842, C843 is connected, and U802 chip comprises input interface LINEOUT_P, LINEOUT_N, output interface OUTN, OUTP, shunt capacitance interface BP, earth signal interface GND, GND_B, power supply signal interface VCC, the input interface LINE_P of switching signal interface SHDN_N, chip U802 and positive pole input matching network C846, R819 is connected, input interface LINE_N and negative pole input matching network C844, R820 is connected, power supply signal interface VCC and filter capacitor C847, C848 is connected, and horn circuit (7) passes through SPK_P, SPK_N, LINEOUT_P, LINEOUT_N, SHDN_N signal is connected with ARM11 core board circuit, by the mode adopting twin loudspeaker to export, improves audio output effect.
8. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described handset circuitry (8) comprises filter network (22) C823, C837, C838, C823 mono-termination RCV_P signal, another termination RCV_N signal, C837 mono-termination RCV_P signal, other end ground connection, C838 mono-termination RCV_N signal, other end ground connection, handset circuitry (8) is connected with ARM11 core board circuit by RCV_P, RCV_N signal.
9. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described MIC PAC circuit (9) comprises biasing circuit (23), filter network (24), described biasing circuit (23) comprises electric capacity C834, resistance R804, R801, R810, R805, resistance R804 mono-termination MICBIAS signal, the other end and R801, C834 is connected, resistance R805 one end ground connection, the other end and C834, R810 is connected, the R801 other end exports EXT_MIC_P as the positive pole of microphone, the R810 other end exports EXT_MIC_N as the negative pole of microphone, described filter network (24) comprises positive pole filter network C805, C830, negative pole filter network C804, C831, the positive pole input MIC_P of C805 mono-termination microphone, another termination C830, C830 other end ground connection, the negative pole input MIC_N of C804 mono-termination microphone, another termination C831, C831 other end ground connection.
10. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described usb circuit (10) comprises USB connector J901, J901 comprises serial interface UART4_RSRXD, UART4_RSTXD, Differential Input interface USB2_D+, USB2_D-, ground interface, power interface VBUS, usb circuit (10) is connected by interface UART4_RSRXD, UART4_RSTXD and ARM11 core board circuit.
11. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described finger-board interface circuit (11) comprises connector J902, J902 comprises finger-board input interface KYPD_IN0 ~ KYPD_IN4, finger-board output interface KYPD_OUT0 ~ KYPD_OUT4, serial interface UART1_RXD, UART1_TXD, Mike's output interface EXT_MIC_P, EXT_MIC_N, loudspeaker input interface SPK_P, SPK_N, LINEOUT_P, LINEOUT_N, USB Differential Input interface USB1D+, USB1D-.
12. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described RFID card reading circuit (12) comprises RFID identification circuit (25), RFID feed circuit (26), described RFID identification circuit (25) comprises RFID identification chip U0501, chip U0501 comprises antenna driver interface TX1, TX2, reference voltage interface VMID, antenna input interface RX, transmitter supply voltage interface TVDD, transmitter power supply ground interface TVSS, simulation part independent power source voltage interface AVDD, simulation part independent power source ground interface AVSS, numerical portion supply voltage interface DVDD, numerical portion power supply ground interface DVSS, input further input interface OSCIN, export further and export OSCOUT, serial data line interface SDA, the enable interface I2C of I2C, outside addressing interface EA, data line interface D1 ~ D7, TX1 interface and input matching network C0505, L0501, C0503, C0501 is connected, TX2 interface and input matching network C0517, L0502, C0516, C0504 is connected, OSCIN, OSCOUT is connected with crystal oscillating circuit, described RFID feed circuit (26) comprise LDO change-over circuit chip U0503, U0503 comprises input interface VIN, output interface VOUT, enable interface EN, ground interface GND, input interface VIN and input filter network C 0509, C0510 is connected, and access VBAT signal, output interface VOUT is connected for RFID identification chip provides three-way power signal AVDD with output filtering network, TVDD, PVDD, by RFID feed circuit for chip U0501 provides clean power supply.
13. one according to claim 1 police identity recognition instrument mainboard interface circuit, it is characterized in that, described Bluetooth circuit (13) comprises bluetooth cpu circuit (27), bluetooth filter circuit (28), described bluetooth cpu circuit (27) comprises Bluetooth chip U1201, Bluetooth chip U1201 comprises radio frequency interface RF_P, RF_N, TCXO external clock input interface XTAL_IN, reference voltage decoupling interface LO_REF, serial port UART2_RXD, UART2_TXD, synchronous data interface PCM_IN, PCM_OUT, PCM_SYNC, PCM_CLK, programmable input and output line interface PIO_0 ~ PIO_9, reseting interface RST#, digital power interface VDD_PADS, internal digital circuit power interface VDD_CORE, RF circuit power interface VDD_RADIO, interface VSS_ANA in analog, RF circuit ground interface VSS_RADIO, digital circuit ground interface VSS_DIG, bluetooth cpu circuit (27) passes through UART2_RXD, UART2_TXD, PCM_IN, PCM_OUT, PCM_SYNC, PCM_CLK interface is connected with ARM11 core board circuit, by Bluetooth wireless transmission agreement, realize short range wireless transmission, bluetooth filter circuit (28) comprises bluetooth filter chip Z804, antenna element (29), bluetooth filter chip Z804 comprises direct current signal interface DC_FEED, earth signal interface GND1, GND6, GND8, balance IO interface BALA_IO1, BALA_IO2, non-equilibrium IO interface UNBALA_LO, BALA_IO1 is connected with the BT_RF_P interface of chip U1201, BALA_IO2 is connected with the BT_RF_N interface of chip U1201, UABALA_IO is connected with antenna element (29), antenna element (29) comprises U803, matching network C1221, L1201, when system uses Bluetooth transmission information, Z804 opens, by U803 and other bluetooth devices.
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| CN201110232814.4A CN102289257B (en) | 2011-08-15 | 2011-08-15 | Main board interface circuit of police identity recognizer |
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| CN201110232814.4A CN102289257B (en) | 2011-08-15 | 2011-08-15 | Main board interface circuit of police identity recognizer |
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| CN104346722B (en) * | 2014-10-27 | 2017-10-31 | 飞天诚信科技股份有限公司 | A kind of Mobile payment terminal and its method of work for supporting bluetooth communication |
| CN105160280A (en) * | 2015-09-08 | 2015-12-16 | 苏州玄禾物联网科技有限公司 | RFID card reading system based on radio frequency identification |
| CN105429666B (en) * | 2015-10-28 | 2019-08-23 | 惠州Tcl移动通信有限公司 | Mobile terminal and battery reset circuit |
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| CN107272859A (en) * | 2017-06-09 | 2017-10-20 | 广州市睿恒电子有限公司 | The veneer laser digital power supply of serial ports screen communication can be directly connected to for beauty industry |
| CN109634169A (en) * | 2018-12-05 | 2019-04-16 | 贵州航天电子科技有限公司 | A kind of wireless internet of things central control unit |
| WO2021031620A1 (en) * | 2019-08-18 | 2021-02-25 | 海信视像科技股份有限公司 | Display device and backlight brightness adjustment method |
| CN113204804B (en) * | 2021-04-25 | 2022-03-22 | 山东英信计算机技术有限公司 | Security module, server mainboard and server |
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