CN202362837U

CN202362837U - Automatic parking charging management device based on single chip microcomputer

Info

Publication number: CN202362837U
Application number: CN2011205080610U
Authority: CN
Inventors: 王旭; 许世维; 余曼
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2011-12-08
Filing date: 2011-12-08
Publication date: 2012-08-01
Anticipated expiration: 2021-12-08

Abstract

The utility model discloses an automatic parking charging management device based on a single chip microcomputer, which comprises the single chip microcomputer. The single chip microcomputer is connected with an infrared detection module, a gate control module, a parking lot state display module, a digital tube display module, an operation keyboard and a printer. Low storage capacity is needed in an infrared detection and single chip microcomputer charging mode, the automatic parking charging management device has an automatic gate opening and closing function, an automatic charging function, a displaying function, a parking lot state displaying function, an inquiring function and a printing function, the charging mode can be adjusted, a system is more flexible, and the device is simple in operation, low in cost, convenient in installation and debugging and capable of meeting the requirement on management of a temporary parking lot. Besides, information encryption and expansion of various functions can be conveniently realized, and a universal charging management system can be formed by means of improvement.

Description

A kind of SCM Based automatic parking charging management device

Technical field

The utility model relates to a kind of parking lot automatic parking charging management device, particularly a kind of SCM Based automatic parking charging management device.

Background technology

Along with the growth of economy, increasing people has added and has purchased garage row.The sharp increase of automobile quantity and the relative shortage of parking space make the regulate charges problem in parking lot show especially, and particularly the short term parking regulate charges of large supermarket is difficult more.Present parking lot fee collection management system adopts following two kinds of charging ways usually: (1) shooting charging way.Place a video camera in the gateway, parking lot respectively, photograph the automotive license plate number through video camera and send single-chip microcomputer or computer to handle, calculate down time and expense through single-chip microcomputer again, and the control gate is opened.This scheme information amount is big, require to have bigger memory capacity, and software design is complicated, and cost is high.(2) charging way of swiping the card.The car owner handles IC-card to the appointed place, passes in and out the parking lot through checking card, and pays the fees through IC-card.But this mode is more suitable in there being extended immobilization to park the parking lot of parking stall.

Summary of the invention

To the shortcoming of existing parking lot fee collection management system, the purpose of the utility model is, a kind of short term parking automatic parking charging management system is provided.Native system adopts infrared detection single-chip microcomputer charging way; Required memory capacity is little; Possessed automatic open and close gate function, automatic charging function, Presentation Function, demonstration parking lot situation, query function and printing function, and charge method can regulate, make system have more dirigibility; Total system is simple to operate, cheap, Installation and Debugging convenient, can satisfy the requirement of management short term parking.In addition, this system can also realize information encryption and the expansion of various function easily, can become universal charging administration system through improving.

In order to realize above-mentioned task, the utility model takes following technical solution to be achieved:

A kind of SCM Based automatic parking charging management device; This device comprises single-chip microcomputer; It is characterized in that, on single-chip microcomputer, be connected with infrared detection module, gate control module, parking lot state display module, charactron display module, operation keyboard and printer.

Other characteristics of the utility model are 16 single-chip microcomputers of MC9S12DG128 type that described single-chip microcomputer adopts Freescale company to produce.

The SCM Based automatic parking charging management device of the utility model; Adopt infrared detection and single-chip microcomputer charging way, required memory capacity is little, has possessed automatic open and close gate function, automatic charging function, Presentation Function, demonstration parking lot situation, query function and printing function; And charge method can be regulated; Make system have more dirigibility, install simple to operate, cheap, Installation and Debugging convenience, can satisfy the requirement of management short term parking.In addition, this device can also be realized information encryption and the expansion of various function easily, can become universal charging administration system through improving.

Description of drawings

Fig. 1 is the structured flowchart of the utility model;

Fig. 2 is the utility model main circulating program process flow diagram.

Below in conjunction with accompanying drawing the utility model is done further to specify.

Embodiment

As shown in Figure 1; Present embodiment provides a kind of SCM Based automatic parking charging management device; Be divided into 7 big modules: (1) infrared detection module: be installed on gateway, parking lot and each parking stall; Be used to detect the gate, turnover parking lot and the parking stall signal of automobile, send single-chip microcomputer to handle accordingly.The infrared detection module is made up of infrared transmitter and infrared radiation receiving circuit.Wherein receiving circuit is divided into gate infrared radiation receiving circuit and parking stall infrared radiation receiving circuit again.(2) gate control module:, carry out the switching function at gate, parking lot with the cooperation of infrared detection module.(3) single-chip microcomputer: the MC9S12DG128 SCM system that adopts Freescale company to produce, it is the core of native system, major function is the supervisory keyboard state; Handle the operation information of keyboard input; Monitoring parking lot state, the control gate opens and closes, and picks up counting after having car to sail the parking stall into; Automobile stops timing after rolling the parking stall away from, will be scaled Parking Fee information down time; The control display shows various information, the print procedure of control information on request.(4) parking lot state display module: show the parking lot status signal.Amber light is represented the automobile present that passes in and out; Green light is represented to have vacant position; Red light representes that an interior parking stall is full up, does not allow automobile to get into.(5) nixie display: show the various information of stopping, comprise contents such as Beijing time, parking stall, down time, room number, Parking Fee, business sales, expenses standard and operation indicating.Nixie display adopts 8 static display modes of altogether positive charactron, has practiced thrift cost.(6) operation keyboard: carry out the kinds of artificial operation through 4 * 4 keyboards (16 arrays that switch is formed), comprise demonstration, inquiry various information, revise expenses standard, calibrate Beijing time, print present displayed content etc.(7) printer: select TP μ P-40A for use, printed invoice and combined turnover.

The infrared detection module is the main modular of device, is divided into transmitting terminal and receiving terminal.Infrared transmitter comprises two infrared transmitters at a distance of certain distance, is used for launching the infrared ray beam.Two NE555 timer chips constitute multivibrator separately, and first is 0.67KHz, and 4 pin of second oscillator (21KHz square wave) are delivered in its output on the one hand, and it is modulated, and last output is used for lighting infrared transmitter; As clock signal, the control gate opens and closes on the one hand.The infrared ray beam is delivered to infrared receiving circuit respectively, if the infrared beam of two bundles is blocked, then receiving circuit is output as 1, otherwise is output as 0, and pulse triggers interruption after treatment, send single-chip microcomputer to handle, and sails the signal that rolls parking lot or parking stall away from into as automobile.The gate infrared ray receives similar with it, and just having reduced descends prolongs the integrated monostalbe trigger 74121 of triggering.Infrared remote receiver TSOP1738 is output as current-collector open circuit form, and two infrared ray beams are delivered to two infrared receivers respectively.Have only when two infrared ray beams all are blocked, output+5V level, delivering to respectively rises prolongs to trigger with descending and prolongs the integrated monostalbe trigger of triggering, makes 74121 output square waves deliver to the preferential code translator of 74LS148, as the look-at-me of automobile turnover parking stall.When automobile sailed the parking stall into, the system time that single-chip microcomputer takes out this moment sent corresponding RAM, and when automobile rolled the parking stall away from, single-chip microcomputer took out the system time in this moment once more, and subtracted each other with initial time, and the gained time is the T.T. of stopping, and send corresponding RAM.

It is core that one-chip computer module adopts the MC9S12DG128B single-chip microcomputer.The MC9S12DG128B single-chip microcomputer is a kind of in 16 single-chip microcomputers of the M68HC12 of motorola inc series; Its inner structure mainly contains the single-chip microcomputer essential part and the CAN functional block is partly formed, and basic structure comprises: a central processor unit HCS12 (CPU), 2 asynchronous serial communication mouth SCI; 2 synchronous serial communication mouth SPI; 8 passages input capture/output is timer relatively, and 18 passage pulse width modulation module and 49 independent digit I/O mouths (wherein 20 have external interrupt and arousal function) also have the Flash ROM of 128KB in sheet; The RAM of 8KB, the EEPROM of 2KB.

Being provided with of I/O mouth, the P0 mouth of single-chip microcomputer is as data port, and P0.0-P0.7 links to each other with the DB0-DB7 of printer respectively.P1.0-P1.5 is as exterior interrupt expansion mouth.P2.0-P2.2 links to each other with red, green, yellow lamp respectively, as parking lot status signal pilot lamp.The interruption that single-chip microcomputer will be handled many (comprise automobile discrepancy parking lot interruption, sail into and roll parking stall interruption etc. away from), and require response speed very fast, satisfied not requirement so adopt the method for software query to carry out the interrupt priority level queuing.Therefore adopt 74LS148 priority encoder expansion single-chip microcomputer exterior interrupt, corresponding different Interrupt Process for example begins and stops timing, charging etc., and send display to show.

Like Fig. 2 is the main circulating program flow process of single-chip microcomputer: promptly be used for the setting of internal RAM and various interruptions, constantly keyboard scan is made corresponding operating, and send display to show.Print subroutine is for accomplishing invoice or sales volume information printing function, and printed invoice will be removed the parking information on parking stall simultaneously.The switching displayed subroutine: the return key on 4 * 4 keyboards can switching displayed Beijing time, room number, parking information (comprise the parking stall, T.T., Parking Fee stop), and show state noted supply print subroutine to use.When showing parking information,, can pass through the Up/Down keys switching displayed if can not show full content simultaneously.Be to show Beijing time during initialization.F3 function key function subprogram: the F3 function key on 4 * 4 keyboards be mainly used in the inquiry various data, be provided with expenses standard and the calibration Beijing time.The timing interrupt service routine: the clock of device adopts the single-chip microcomputer internal clocking, and this program is 24 hours systems with clock setting, and revises the clock count unit.

When automobile through or when being parked in the parking lot; The infrared detection module will be notified single-chip microcomputer to have automobile to advance and go out; Single-chip microcomputer according to the opening and closing at the gate, State Control parking lot in parking lot, calculates the time and the expense of stopping again, and send display to show; Printer prints is handled demonstration, inquiry, the modification requirement of keyboard.Parking rate be n unit/hour, surpass 30 minutes by one hour, otherwise disregard.This device can also serve as clock.

Claims

1. a SCM Based automatic parking charging management device comprises single-chip microcomputer, it is characterized in that, on single-chip microcomputer, is connected with infrared detection module, gate control module, parking lot state display module, charactron display, operation keyboard and printer.

2. SCM Based automatic parking charging management device as claimed in claim 1 is characterized in that, described single-chip microcomputer is selected the MC9S12DG128B single-chip microcomputer.