CN2171139Y

CN2171139Y - Electronic distinguishing apparatus for collecting fare of vehicle

Info

Publication number: CN2171139Y
Application number: CN93212180U
Authority: CN
Inventors: 宋剑波; 邓红光; 刘正林
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-10
Filing date: 1993-05-10
Publication date: 1994-07-06
Anticipated expiration: 2003-05-10

Abstract

The utility model relates to a fare collecting device for vehicle transit, which aims at reducing power consumption and recognizing compatible EID cards and SID cards. The utility model is composed of an electronic ID card which is arranged on the vehicle, a vehicle recognizer which is arranged on the side of a passage and a main control computer which achieves the statistical management of collection. The recognizer comprises a vehicle transit detector, an interrogation signal launcher, an answering signal receiver, the processor of the answering signal receiver, etc. The ID card receives interrogation signals and launches answering signals; the answering signal is composed of the identification codes and the effective data codes of the SID card or the EID card; the identification code controls and selects work clocks to adapt the ID cards with different code speeds. The detector controls the control switch of a main power supply to add electricity for a transceiver.

Description

Electronic distinguishing apparatus for collecting fare of vehicle

The utility model relates to a kind of fare registering apparatus, relates to a kind of at management point return the vehicle to the garage and knock off expense, toll or enter the equipment of expense or rather.

Vehicle is during through the porch in highway, bridge and tunnel, and generally will stopping pays influence work efficiency, and the key problem in technology that changes the paying of stopping is to the identification by vehicle characteristics.At present the recognition technology that adopts has: adopt the artificial visual identity license number of the computing machine technology of gamma camera, but recognition speed is slow, poor accuracy, strict to environment and light; Adopt the contact charge of magnetic card, reliability is low, and has easy to wear, charge speed to wait problem slowly.

Have a kind of to discerning, write down by vehicle and the vehicle of the unified in view of the above charge charging device of keeping accounts automatically.Form by record keeping charge processor that is installed in the porch and the vehicle code transmitter that is installed on the vehicle, when vehicle passes through, the charge processor of keeping accounts is received the flag code of the representative vehicle characteristics that the vehicle code generator sends, the storage etc. of discerning, keep accounts.

Wherein vehicle code transmitter also claims electronics ID card, can receive wireless interrogation signal, is made up of interrogating signal receiver, answer codes generator and code transmitter.Can adopt surface acoustic wave passive card (SID card), also can adopt active electronic card (EID card); The charge processor of keeping accounts generally includes the interrogating signal transmitter, vehicle answer signal receiver reaches with the main control computer is the vehicle code process unit of core component.When vehicle passed through management point, the interrogating signal that the charge processor of keeping accounts sends was received in the electronics ID clamping that is installed on the vehicle, replys so make, and promptly launches the vehicle feature code, kept accounts and charged the processor reception and handle this answer signal, realized that expense is levied in identification automatically.

Mainly there is the problem of two aspects in said apparatus, and the one, the charge processor of keeping accounts can not compatiblely be discerned SID card and EID card, because the bit rate of SID card and EID card is inconsistent.The SID card adopts surface acoustic wave technology to make, optimum code speed Rb 〉=10Mb/S, and speed reduces then cost rising, just is difficult to when reducing to 3Mb/S produce in batches.And EID card relocatable code speed is lower, generally is no more than 3Mb/S, and the bit rate cost that rises then rises, therefore can not be for the user accept, and no practical value.Because the two bit rate differs too big, can not unify to cause the difficulty on the identification compatibility.The 2nd, the power consumption of record keeping charge processor is too big, because the charge processor of keeping accounts is to be in the duty of launching interrogating signal and reception answer signal uninterruptedly.

The purpose of this utility model is that the expense device is levied in the identification of a kind of vehicle electric of design, and the charge automatically that realizes not stopping can compatible identification SID card and EID card, has low-power consumption, automaticity height, high reliability features.

The expense device is levied in vehicle electric identification of the present utility model, by the electronics ID card that is installed on the vehicle, being installed in the other vehicle identification machine of passage forms with the main control computer of finishing charge, statistical management, described vehicle identification machine comprises the transmitter that sends interrogating signal to vehicle, receive the receiver of vehicle electric ID card answer signal, answer signal processor by the serial/parallel transducer and the single-chip microcomputer of answer signal are formed is characterized in that:

1) described vehicle identification machine also comprises the vehicle passing detection device of being made up of infrared transmitting tube and infrared receiving tube that is arranged on the passage both sides, and infrared receiving tube output connects the vehicle identification machine;

2) the answer signal processor of described vehicle identification machine also includes the clock selector of the serial/parallel transducer of answer signal of compatible identification SID card and EID card, by clock generator for a long time, the ripple door that is subjected to SID card in timing control unit control, the identification answer signal or EID card identity code and latch with make the gate circuit that logic selects with clock for a long time and combine, select the CLK end of a kind of clock of output to the serial/parallel transducer of answer signal;

3) described vehicle identification machine also includes the primary power gauge tap that is subjected to described infrared receiving tube output control, and power supply adds on the clock selector of described transmitter, receiver and the serial/parallel transducer of answer signal through the primary power gauge tap.

Electronics ID card is attached on the windshield as electronic license plate, and the vehicle passing detection device is installed in the both sides, track, and infrared receiving tube and cognitron are positioned at same trackside.When not having vehicle to pass through, infrared detector oneself normal transmission, reception are turn-offed as the power supply of the cognitron sending and receiving device of main power consumption parts.When vehicle enters in the track, provided the car signal, started the primary power gauge tap of cognitron, the sending and receiving device has been applied controlled source, transmitter emission inquiry modulation signal by infrared eye.It is that a modulation signals of representing self unique feature is returned in auto answer that the ID clamping of vehicle is received behind this interrogating signal, the identity code and the car number data that comprise SID card or EID card, cognitron receives and handles answer signal, the full detail that electron gain ID card carries.The answer signal processor is selected a kind of and the identical clock of vehicle ID card bit rate by clock selector, work clock as the serial/parallel transducer of answer signal, with compatible identification code speed high SID card and the low EID card of bit rate, finish identification to the vehicle effective information, after having discerned, Single-chip Controlling is turn-offed the primary power gauge tap.

The cognitron data send main control computer to carry out unified management, finish automatic charge, and main control computer can be managed the vehicle identification of a plurality of passwaies simultaneously and levy expense.

Describe technology of the present utility model in detail below in conjunction with the embodiment accompanying drawing.

Accompanying drawing 1 is levied expense principle of device block diagram for vehicle electric identification.

Accompanying drawing 2 is a cognitron theory diagram shown in Figure 1.

Accompanying drawing 3 is a primary power gauge tap electrical schematic diagram shown in Figure 2.

Accompanying drawing 4 is an answer signal treatment circuit schematic diagram shown in Figure 2.

Accompanying drawing 5 is an electronics ID card structure synoptic diagram.

Referring to accompanying drawing 1, the infrared transmitter 11 and the infrared remote receiver 12 that are installed in the both sides, track constitute the vehicle passing detection device.When having vehicle 20 to pass through, infrared beam is blocked, infrared remote receiver 12 output high level distinguishing mark signals, open primary power gauge tap in the cognitron 30, transmission circuit is by antenna 31 emission rf modulations interrogating signals (ASK modulation) in the cognitron, electronics ID card 40 is received encrypted modulation signals of delayed response behind the interrogating signal, cognitron 30 receives this signal and decoding by antenna 31, obtain the car plate signal, after having discerned, the primary power gauge tap is automatic cutout, returns to normal.

Send main control computer 60 by the cognitron serial output data that each passage comes through bus 50, computing machine is deducted this license plate number expense volume or is collected toll from bank account from file store 61, simultaneous computer is added up to vehicle flowrate, by the time, charge etc., and by external unit 62 printouts or demonstration output, whole charging process is finished in tens of milliseconds, therefore allows vehicle not stop with the speed of 300KM/H and passes through charge station.Each the lane in which the drivers should pay fees allows apart≤1KM each other.When cognitron antenna 31 is installed, should guarantee that its reach can cover the stretch face, for the vehicle of not installing electronics ID card, cognitron provides alarm control signal.

Referring to accompanying drawing 2, cognitron 30 comprises emission, receiving antenna 301, transmitter 302, receiver 303, by the serial/parallel transducer 306 of clock generator 304, clock selector 305, answer signal and the answer signal processor that single-chip microcomputer 307 is formed for a long time, primary power gauge tap 309 and power supply 310, cognitron power supply comprises controlled source 1 and controlled source 2 not, controlled source 2 output does not connect single-chip microcomputer 307 and system clock 304, main power switch 309 etc., and controlled source output connects the transmitter 302 of main power consumption parts and receiver 303 etc.

Primary power gauge tap 309 is subjected to the high level distinguishing mark signal controlling of infrared remote receiver 12 outputs, and transmitter 302, receiver 303 are carried out identifying operation, after having discerned, turn-offs primary power 309 switches by single-chip microcomputer 307 notices, and transmitter, receiver quit work.

The utility model makes the sending and receiving device of main power consumption be in intermittent duty by two probes (infrared probe and inquiry, reply probe) and primary power gauge tap technology are set, because tens of milliseconds time is only used in identification work, therefore in the overwhelming majority time, transceiver does not consume energy, and equipment power dissipation adopts the cognitron of single probe (inquiring, reply probe) to reduce by 90% at least.

Referring to accompanying drawing 3, be the enforcement circuit of primary power gauge tap, realize the low power dissipation design purpose.

Infrared probe 12 output the clock of car signal as d type flip flop U1:A arranged, U1:A latchs the output high level and makes switch triode V1 conducting, control VMOS pipe V2 conducting, give the cognitron radio-frequency (RF) transceiver 302,303 power supply Vcc1, after identification was finished, single-chip microcomputer 307 provided the CD end that controls signal to U1:A, with its output zero clearing, control is turn-offed, and recovers the power-down state of radio-frequency (RF) transceiver, is triggered once more until U1:A.

Referring to accompanying drawing 4, be the enforcement circuit of answer signal processor, lay particular emphasis on solution to the identification of the compatibility of SID card and EID card, embodiment gets the doubleclocking working method, starts separately work clock respectively by the identifier of electronics ID card itself.The echo coded signal of replying of electronics ID card is made up of two parts, and first is the identification code of SID card or EID card, is 0 as the identification code of regulation SID card, and the identification code of EID card is 1.Second portion is the valid data of vehicle.

Present embodiment SID card bit rate is taken as 10Mb/S, and EID card bit rate is taken as 2.5Mb/S, and therefore getting identifier is that 4 SID code elements are wide, is 400nS, and a unification EID code element is wide, and second portion is all 32bit.

Timing control unit 311 output timing signals comprise gate signal 1 and latch signal 2 among the figure, and the identification code that receiver 303 detections are exported latchs with ripple door U1:A gating with trigger U2:A.SID card in this way, identification code is 0, U1:A output 1, the Q end output 1 of U2:A, clock CK1(10Mb/S) by U1:C, U3:A adds to the CLK end of counter U4-U7, and this clock becomes 32 bit parallel data by shift register U4-U7 with 32 bit serial reply datas and exports to single-chip microcomputer 307 processing, this moment, U1:B output 0, sealed clock CK2.

Otherwise, EID card in this way, identification code is 1, U1:A output 0, CK1 is then sealed in U2:A output 0, CK2(2.5Mb/S) add to the CLK end of shifting memory by U1:D, U3:A, finish the serial/parallel conversion of answer signal, realize identification electronics ID card signal with different bit rates.

According to same design philosophy, differ N SID card and EID card doubly for bit rate, its identification compatible technique all can realize by the measure of clock selection for a long time, even is extended to that all available different frequency clock goes to sit in the right seat more than three kinds and three kinds.

Referring to accompanying drawing 5; be produced on the electronics ID card on the paper; can be circle, ellipse, rectangle or other Any shape; embodiment gets 140 * 50 * 0.3mm, is three-decker, comprises pattern plane, adhesive sticker ply of paper 401; printing tours antenna layer 402 and paper protective seam 403; in the tours antenna is element region, and this structure can guarantee the disposable use of electronics ID card, the damage of tearing.

It is fast that the utility model compared with prior art has recognition speed, the accuracy height, to antenna, environmental condition no requirement (NR), the characteristics that reliability is high, compatible identification SID card and EID card, little power consumption not only can be used for the vehicle fee collection, also can be applicable to the identification of other moving objects such as the automatically number of copying of train, the automatically number of copying of container, automatically charging in car park etc. Also available ultrasonic wave or the other technologies realization of infrared acquisition of car signal arranged.

Claims

1, the expense device is levied in a kind of vehicle electric identification, by the electronics ID card that is installed on the vehicle, being installed in the other vehicle identification machine of passage forms with the main control computer of finishing charge, statistical management, described vehicle identification machine comprises the transmitter that sends interrogating signal to vehicle, receive the receiver of vehicle electric ID card answer signal, answer signal processor by the serial/parallel transducer and the single-chip microcomputer of answer signal are formed is characterized in that:

2, the expense device is levied in vehicle electric identification according to claim 1, it is characterized in that described primary power gauge tap is linked in sequence by trigger, switch triode and VMOS pipe forms, described infrared receiving tube output connects trigger CLK end, VMOS pipe source electrode connects primary power output, the output-controlled power supply that drains, trigger clear terminal connects single-chip microcomputer.

3, the expense device is levied in vehicle electric identification according to claim 1, it is characterized in that described electronics ID card is by pattern plane, adhesive sticker ply of paper, the three layers structure that printed antenna layer and paper protective seam are formed.