CN204761587U - City parking stall intelligent display system based on APP technique - Google Patents

Abstract

The utility model provides a city parking stall intelligent display system based on APP technique, belongs to electron product technology field. The utility model aims at providing a based on the APP technique, carry out rationally showing the city parking stall intelligent display system based on APP technique who whether has the car state to at present current parking stall. The utility model discloses a constitute by minimum system, image acquisition circuit, wireless image transmission circuit, power voltage stabilizing circuit, binarization comparison circuit. The utility model discloses realize the real -time parking stall information that flows and detect the function. Has the positioning accuracy height, real -time, feedback network characteristics such as real -time. When the driver look for the parking stall, can rapidly, accurately obtain the information on parking stall and whether the parking stall that provides is fit for the size of locomotive, can save a large amount of time, with the maximize that utilizes of resource from this to this loaded problem of optimizing the traffic.

Description

Based on the city parking position intelligent display system of APP technology

Technical field

The utility model belongs to technical field of electronic products.

Background technology

From the whole country, the vehicle fleet size increased sharply at present far exceeds the peak load in existing urban road and parking lot, and the open segment path resource involved great expense, as the use of temporary parking, becomes the way that cities in China is current.Due to the irrational utilization on parking stall, cause present stage serious the supply of park not enough.The existing research about parking stall measure, mainly by improving image procossing precision, improving hardware or increasing that collection point number realizes.But research current both at home and abroad is all confined to the process in early stage, in the gathering of post-processed information, the depth of investigation is strong, and the less practical studies considering later stage Information application, effect is not very desirable.

Summary of the invention

The purpose of this utility model is to provide a kind of based on APP technology, carries out to current existing parking stall the city parking position intelligent display system based on APP technology whether reasonable display has car state.

The utility model is made up of minimum system, image acquisition circuit, wireless image transmission circuit, power supply stabilization circuit, binaryzation comparison circuit;

Minimum system: adopt K60 chip, XTAL32 and EXTAL32 accesses the crystal oscillating circuit of this partial circuit respectively as two ends, 60 pin, 61 pin, 74 pin, 75 pin, 88 pin, 89 pin access direct voltage sources, 8 pin, 9 pin access input control circuit by the electric capacity of VCC and parallel connection;

Image acquisition circuit: the pin of the external crystal oscillating circuit in CLK1 and CLK2 position; 30 pin and 31 pin external power supplys; 8 pin AVDD external power supplys; 12 pin, 14 pin, the external interrupt signal circuit of 15 pin; Y0-Y7 pin connects the C11-C18 pin of minimum system respectively;

Wireless image transmission circuit: BLDC-A pin, BLDC-B pin connect B10 pin, the B11 pin of receiving minimum system respectively, BLDC-C pin receives ground wire, V1 pin connects incoming level, and input meets C2 by D1, and lower end controls the height of base voltage by connecing three NPN pipes;

Power supply stabilization circuit: be for image acquisition circuit is equipped with, by inputting the level of 7.2V as input signal, receive 3 of chip, in 4 pin, 1,2 pin of chip are held with receiving, the RESET reset terminal of chip is unsettled, and 5,6 pin, as output, export the DC level of termination 5V, by C10, C11 earth connection;

Binaryzation comparison circuit: the video0 pin of the preliminary binaryzation comparison circuit of video input signals connects the level signal of input, and 4 pins of comparator meet VCC, and 1 pin is output, and to lead back through resistance R1 from 1 end and feed back to 2 pins, 8 pin ground connection; The video1 of the preliminary binaryzation comparison circuit of video input signals receives output signal on the video1 pin of thresholding treatment circuit as input, output signal through 5 pins of thresholding treatment circuit comparator and 6 pins be input, 8 pins connect high level, 4 pin ground connection, 7 pins, then as output, feed back to 6 pins by resistance R5 simultaneously.

The utility model realizes real-time parking stall flowing information and measuring ability.There is positioning precision high, real-time, the features such as feedback network is real-time.When driver finds parking stall, whether the information that can obtain parking stall rapidly, exactly and the parking stall provided are applicable to the size of locomotive, can save a large amount of time thus, the utilization of resource be maximized, optimize the obstructing problem of traffic with this.

Accompanying drawing explanation

Fig. 1 is the utility model circuit overall connection diagram;

Fig. 2 is the utility model K60 minimum system circuit diagram;

Fig. 3 is the utility model image acquisition circuit figure;

Fig. 4 is the utility model wireless image transmission circuit diagram;

Fig. 5 is the utility model power supply stabilization circuit figure;

Fig. 6 is the preliminary binaryzation comparison circuit of video input signals in the utility model binaryzation comparison circuit figure;

Fig. 7 outputs signal through thresholding treatment circuit in the utility model binaryzation comparison circuit figure.

Embodiment

The utility model is made up of minimum system 3, image acquisition circuit 1, wireless image transmission circuit 2, power supply stabilization circuit, binaryzation comparison circuit;

Minimum system: adopt K60 chip, XTAL32 and EXTAL32 accesses the crystal oscillating circuit of this partial circuit respectively as two ends, 60 pin, 61 pin, 74 pin, 75 pin, 88 pin, 89 pin access direct voltage sources, 8 pin, 9 pin access input control circuit by the electric capacity of VCC and parallel connection;

Image acquisition circuit: the pin of the external crystal oscillating circuit in CLK1 and CLK2 position; 30 pin and 31 pin external power supplys; 8 pin AVDD external power supplys; 12 pin, 14 pin, the external interrupt signal circuit of 15 pin; Y0-Y7 pin connects the C11-C18 pin of minimum system respectively;

Wireless image transmission circuit: BLDC-A pin, BLDC-B pin connect B10 pin, the B11 pin of receiving minimum system respectively, BLDC-C pin receives ground wire, V1 pin connects incoming level, and input meets C2 by D1, and lower end controls the height of base voltage by connecing three NPN pipes;

Power supply stabilization circuit: be for image acquisition circuit is equipped with, by inputting the level of 7.2V as input signal, receive 3 of chip, in 4 pin, 1,2 pin of chip are held with receiving, the RESET reset terminal of chip is unsettled, and 5,6 pin, as output, export the DC level of termination 5V, by C10, C11 earth connection;

The video0 pin of binaryzation comparison circuit: Fig. 6 connects the level signal of input, and 4 pins of comparator meet VCC, and 1 pin is output, and to lead back through resistance R1 from 1 end and feed back to 2 pins, 8 pin ground connection; The video1 of Fig. 6 receives on the video1 pin of Fig. 7 as input, and 5 pins of Fig. 7 comparator and 6 pins are input, and 8 pins connect high level, 4 pin ground connection, and 7 pins, then as output, feed back to 6 pins by resistance R5 simultaneously.

Below in conjunction with accompanying drawing, the utility model is described in further detail:

In Fig. 2, XTAL32 and EXTAL32 of K60 accesses the crystal oscillating circuit of this partial circuit respectively as two ends.RESETB accesses reset circuit.VDD, VSS(60,61), (74,75), (88,89) then access corresponding direct voltage source, in order to driving chip work.8,9 pins then access input control circuit by the electric capacity of VCC and parallel connection.

The pin of the external crystal oscillating circuit in CLK1 and CLK2 position in Fig. 3.30 and 31 pin external power supplys; 8 pin AVDD external power supplys; The external interrupt signal circuit (being achieved function by VCC, R1, C1) of 12,14,15 pin is last, and Y0-Y7 pin is as exporting the C11-C18 pin received successively in Fig. 1.

The BLDC-A of Fig. 4, BLDC-B pin receives the B10 of Fig. 1, B11 pin.BLDC-C pin in (this part is serial line interface) figure receives ground wire.V1 pin in Fig. 4 connects incoming level, the driving source of the most whole circuit.Input is connect by D1 C2 to regulate field effect transistor conducting state with the gate-source level controlling field effect transistor.Lower end controls the height of base voltage by connecing three NPN pipes, once realize the modulating part of information.

The power supply stabilization circuit of Fig. 5 is as the voltage stabilizing circuit part of Fig. 3.By inputting the level of 7.2V as input signal in figure, receive in (3,4) IN pin of chip, held with receiving by (1,2) pin of chip, (RESET) reset terminal of chip is unsettled, by (5,6) pin as output.Meanwhile, exporting the DC level of termination 5V, by C10, C11 earth connection, the effect of steady supply voltage is realized.

Video0 pin in Fig. 6 connects the level signal of input, and 4 pins of comparator meet VCC, and 1 pin is output, and to lead back through resistance R1 from 1 end and feed back to 2 pins, 8 pin ground connection.The video1 of Fig. 6 receives on the video1 pin in Fig. 7 as the input of Fig. 7, and 5 pins of Fig. 7 comparator and 6 pins are input, and 8 pins connect high level, 4 pin ground connection, and 7 pins, then as output, feed back to 6 pins by resistance R5 simultaneously.AV2 in Fig. 7 figure receives as the output of this comparison circuit.The video1 of video1 and Fig. 7 of last Fig. 6 accesses 1,2 pin of Fig. 3 respectively.

K60 minimum system part: K60N512VM100 chip power class pin, BGA package 22 pins, LQFP encapsulates 27 pins, chip uses multi-group power pin to be respectively the circuit supplies such as internal voltage regulator, the driving of I/O pin, A/D change-over circuit, and internal voltage regulator is the power supply such as kernel and oscillator.In order to power good, MCU inside comprises multi-group power circuit, provides many places power supply leading foot simultaneously, is convenient to external filter capacitor.In order to power balancing, MCU provides the many places leading foot on the inner ground be connected, for circuit design.

Wireless image transmission: what radio transmission information utilized is electromagnetic wave.Transmission information will through information gathering, modulation, amplifies, and launches, and receives, demodulation, amplifies, and reduces several step.Collection refers to that image information and acoustic information change the signal of telecommunication into.

Power supply stabilization circuit: power transformer: be step-down transformer, electrical network 220V alternating voltage is transformed into the alternating voltage suited the requirements by it, and gives rectification circuit, and the no-load voltage ratio of transformer is determined by the secondary voltage of transformer.Rectification circuit: utilize asymmetrical circuit element, is transformed into the sinusoidal ac of 50Hz the direct current of pulsation.Filter circuit: by the filtering in addition of the alternating component major part in Output Voltage in Rectified Circuits, thus smoother direct voltage can be obtained.Voltage stabilizing circuit: the function of voltage stabilizing circuit is the DC voltage stability making output, not with ac grid voltage and load change and change.

OV7620 part: upper figure is a digital camera (OV7620), and it is integrated with an interrupt signal, AD conversion function, does not need impressed field separating chips and AD conversion chip, saves space.Can see that it one has 48 pins, includes each interrupt signal and gradation of image signal.Its pin is described as follows: 1.PIN1-PIN8 grey scale signal output interface 2.Y0-Y7PIN11SCCB data-interface 3.SDAPIN12 parity field synchronizing signal 4.FODDPIN13SCCB data clock 5.SCLPIN14 capable interrupt signal 6.HREFPIN16 field interrupt signal VSYNPIN18 pixel synchronizing signal 7.PCLK (being also TCLK) PIN32 analog signal output interface VTO due to the integrated level of cmos image sensor high, volume is little, generally follow-up treatment circuit can be accomplished on camera.Therefore, the imageing sensor of digital camera general in single-chip microcomputer is CMOS, and adopts CCD mostly to be simulation camera as the camera of imageing sensor.

Binaryzation comparison circuit: " fixed threshold method " this binary processing method, is made up of a voltage comparator, the vision signal exported by CCD sends into the in-phase end of comparator, and end of oppisite phase adds that an adjustable level (threshold level) is just passable.Adopt in this way, when light stability can not be ensured, when the ccd output signal amplitude caused due to the change of light source changes, just probably cause larger error.

The utility model is by parking space information, IMAQ (camera), course changing control mechanism (for adjusting camera direction), single-chip microcomputer and kernel (minimum system k60), image procossing mechanism, wireless image transmission mechanism, APP(4) and the unit such as control terminal form:

Parking space information (ParkingUnit): it is wide that the outdoor standard parking stall of present stage China is of a size of 2.6m() × 5.3m (length) to 3.0m (wide) × 5.3m (length), this part is as the basis of Information Monitoring.

IMAQ (camera) (CameraCollectionUnit): what the utility model was selected is OV7640 chip that OmniVision company produces is for the IMAQ of testing vehicle, the speed image of 30fps can be reached the soonest, its control can be realized by the SCCB interface on chip, SCCB passes through SCCB_E, SIO_C, SIO_D tri-string lines complete exchanges data, and wherein SIO_C accesses clock signal, and SIO_D completes bidirectional data exchange; There is provided VGA and QVGA pattern, the form auto-exposure controls such as exportable RAWRGB, RGB (GRB4:2:2), Automatic white balance, more intelligent raising picture quality; VREF be internal reference voltage by 1uF capacity earth, VSYNC frame synchronizing signal, HREF line synchronizing signal, PCLK pixel synchronizing signal access single-chip microcomputer, to control the synchronous of picture signal-obtaining.

Course changing control mechanism (SteeringControlUnit): the steering mechanism of the servos control that the utility model is selected, its control mode is simple, only need a road signal can automatically forward to corresponding direction, and fast response time, and record current direction and angle information, provide corresponding angle for image procossing and turn to data.

Single-chip microcomputer and kernel (SCMandKernel): the flash memory able to programme of K60 series monolithic is 256KB-1MB.ARMCortex-M4 processor is the up-to-date flush bonding processor developed specially by ARM, has 32 bit processor kernels, in order to the Digital Signals market of satisfy the demand effective and wieldy control and signal processing function mixing.To be that external data space is maximum reach 64M to the feature of this processor, and built-in RAM reaches 256Kbytes, not only can preserve raw image data, more can provide enough spaces required for operation compression algorithm.

Image procossing mechanism (ImageProcessingUnit): the graphics processing unit of what the utility model was selected is MATLAB solves the problem of real-time image information, and adopt corresponding algorithm structure, collected information is processed, feeds back to terminal.

Wireless image transmission mechanism (WirelessImageTransmissionUnit): use WLAN transmission of monitoring image, present comparative maturity be adopt MPEG-4 Image Compression.This compress technique is when 500Kbit/s speed, and the image definition after compression can reach 1CIF (352 × 288 pixel) ~ 2CIF.Under the rate behavior of 2Mbit/s, this technology can transmit 4CIF(702 × 576 pixel, DVD definition) image of definition.Adopt MPEG-4 to compress later digitized image, through wireless channel transmission, coordinate corresponding software, be easy to realize networking, intelligentized digitalized city safety monitoring system.

APP and control terminal (APPMonitoringUnit): in JDK and Android development environment, write APP.In the data processing platform (DPP) of terminal, unified arrange and control, obtained data of classifying.Finally by transport sector, information is turned back on the APP display screen of user again, fully change with the utilization reaching information.

Claims (1)

1. based on a city parking position intelligent display system for APP technology, it is characterized in that: be made up of minimum system (3), image acquisition circuit (1), wireless image transmission circuit (2), power supply stabilization circuit, binaryzation comparison circuit;

Minimum system: adopt K60 chip, XTAL32 and EXTAL32 accesses the crystal oscillating circuit of this partial circuit respectively as two ends, 60 pin, 61 pin, 74 pin, 75 pin, 88 pin, 89 pin access direct voltage sources, 8 pin, 9 pin access input control circuit by the electric capacity of VCC and parallel connection;

Image acquisition circuit: the pin of the external crystal oscillating circuit in CLK1 and CLK2 position; 30 pin and 31 pin external power supplys; 8 pin AVDD external power supplys; 12 pin, 14 pin, the external interrupt signal circuit of 15 pin; Y0-Y7 pin connects the C11-C18 pin of minimum system respectively;

Wireless image transmission circuit: BLDC-A pin, BLDC-B pin connect B10 pin, the B11 pin of receiving minimum system respectively, BLDC-C pin receives ground wire, V1 pin connects incoming level, and input meets C2 by D1, and lower end controls the height of base voltage by connecing three NPN pipes;

Power supply stabilization circuit: by inputting the level of 7.2V as input signal, receives 3 of chip, in 4 pin, 1,2 pin of chip is held with receiving, the RESET reset terminal of chip is unsettled, and 5,6 pin, as output, export the DC level of termination 5V, by C10, C11 earth connection;

Binaryzation comparison circuit: the video0 pin of the preliminary binaryzation comparison circuit of video input signals connects the level signal of input, and 4 pins of comparator meet VCC, and 1 pin is output, and to lead back through resistance R1 from 1 end and feed back to 2 pins, 8 pin ground connection; The video1 of the preliminary binaryzation comparison circuit of video input signals receives output signal on the video1 pin of thresholding treatment circuit as input, output signal through 5 pins of thresholding treatment circuit comparator and 6 pins be input, 8 pins connect high level, 4 pin ground connection, 7 pins, then as output, feed back to 6 pins by resistance R5 simultaneously.