CN202257957U

CN202257957U - Vehicle identification system

Info

Publication number: CN202257957U
Application number: CN2011203815580U
Authority: CN
Inventors: 李雷
Original assignee: SHANGHAI PEIYU INFORMATION TECHNOLOGY CO LTD
Current assignee: SHANGHAI PEIYU INFORMATION TECHNOLOGY CO LTD
Priority date: 2011-10-10
Filing date: 2011-10-10
Publication date: 2012-05-30
Anticipated expiration: 2021-10-10

Abstract

The utility model discloses a vehicle identification system, which comprises a judgment logic circuit, a wireless transmission module, an ultrasonic transducer, a magnetic field sensor and a power module, wherein the wireless transmission module is connected with the judgment logic circuit and keeps communication with a remote system; the ultrasonic transducer is connected with the judgment logic circuit; the magnetic field sensor is connected with the ultrasonic transducer; and the power module is connected with the judgment logic circuit and the wireless transmission module. The identification technology of a compound sensor is adopted for the identification system disclosed by the utility model, so compared with the accuracy of 70% when a single magnetic field sensor is used conventionally, the accuracy of the vehicle identification system is greatly improved and can achieve more than 99.9% in actual measurement.

Description

A kind of vehicle identification system

Technical field

The utility model relates to the recognition system of vehicle parking situation in a kind of parking lot, relates in particular to a kind of vehicle identification system.

Background technology

Along with the develop rapidly of China's automobile industry, the problem of city " difficulty of parking " is quite serious, improves park situation and parking facility; Raise the efficiency extremely urgent; And the Chinese large-sized parking lot does not still possess the intelligent car position management system at present, mostly is by the parking lot staff management to be distinguished in the parking stall, for the user; Place oneself in the midst of in the large parking lot; Arrive fast still difficulty relatively of parking position, so just cause the parking lot overall operation efficiency low, in addition can because stop be inconvenient to cause managerial confusion.

In recent years, gradually different recognition systems have been adopted in the unartificial detection of parking position on the market, the recognition system that is adopted has:

1) wireless magnetic field recognition system: wireless magnetic field recognition system can not be got rid of the magnetic interference on adjacent parking stall, receives that the magnetic field of the earth is periodically variable to be influenced, and actual recognition accuracy has only 70%.

2) conventional ultrasonic wave recognition system: the power consumption of ultrasound wave parking stall detector is too big, must connect up, and the construction trouble can not be got rid of the interference of other object (like adjacent vehicle, infrared ray, metal etc.) to it.

In view of vehicle identification system on the market not as people's will; The operational efficiency that how to improve parking occupancy management system has been the problem that presses for solution; Because the accuracy that the magnetic field recognition system detects, stability are not as ultrasonic sensor; People have turned to the ultrasound wave recognition system with sight line gradually in recent years; Especially to the power consumption that how can reduce the ultrasound wave recognition system, the problem that can improve accuracy, security and the stability of its detection has again become the popular object of people's research, and regrettably this desirable achievement in research was not disclosed by common people so far.

The utility model content

The utility model is low for the operational efficiency that solves above-mentioned parking occupancy management system, and its accuracy, security and stability are difficult to technical matterss such as realization, and a kind of vehicle identification system is provided; This vehicle identification system can be realized high efficiency, energy-conservationization, the environmental protectionization of parking lot operation; Be used for the parking stall guiding in parking lot, strengthen the information system management in parking lot, control stably, management vehicle turnover; Save time, make the parking lot image perfect more.

For realizing above-mentioned technical matters, the utility model also provides a kind of vehicle identification system, and said recognition system comprises

One decision logic circuit;

One wireless transport module, said wireless transport module connect said decision logic circuit and keep communication to be connected with remote system;

One ultrasonic sensor, said ultrasonic sensor connect said decision logic circuit;

One magnetic field sensor, said magnetic field sensor connects said ultrasonic sensor;

One power module, said power module connect said decision logic circuit and wireless transport module.

The further improvement of the utility model is: said magnetic field sensor connects said decision logic circuit.

The utility model has been obtained preferable beneficial effect:

1) the utility model has adopted compound sensor (magnetic field sensor and ultrasonic sensor), and the decision logic circuit draws a vehicle identification status data through logical algorithm, significantly improves the reliability of judging the parking space information that has or not vehicle parking, reduces erroneous judgement.70% accuracy rate when using magnetic field sensor with tradition is single is compared significantly and is improved, and actual measurement can reach more than 99.9%.

2), just triggers by vehicle ultrasonic sensor work when having turnover to cause the changes of magnetic field of magnetic field sensor, to reduce power consumption.

3) utilize the parking space information data of the vehicle parking that the utility model gathers, can realize that the parking stall induces, functions such as parking stall charging need not wiring, easy construction.

Description of drawings

Fig. 1 is the structural representation of first preferred embodiment of the utility model vehicle identification system;

Fig. 2 is the structural representation of second preferred embodiment of the utility model vehicle identification system.

Embodiment

For the benefit of to the further understanding of the utility model structure, the utility model is explained with the preferred embodiment of accompanying drawing 1, accompanying drawing 2.

Of Fig. 1, the utility model vehicle identification system 10 comprises a decision logic circuit 11; One wireless transport module 12, said wireless transport module 12 connect said decision logic circuit 11 and keep communication to be connected with remote system; One ultrasonic sensor 13, said ultrasonic sensor 13 connects said decision logic circuit 11; One magnetic field sensor 14, said magnetic field sensor 14 connects said ultrasonic sensor 13; One power module 15, said power module 15 connects said decision logic circuit 11 and wireless transport module 12.

The utility model adopts the detecting mode of ultrasonic sensor 13, and it the problem of wrong report can not occur causing as detecting modes such as using infrared ray, microwave receive external environment variation or interference etc. easily.The utility model vehicle identification system 10 is in order further significantly to improve the reliability of judging the parking space information that has or not vehicle parking; Reduce erroneous judgement; On the basis of first preferred embodiment, said magnetic field sensor also is connected (like Fig. 2) with said decision logic circuit, adopts compound sensor (magnetic field sensor 14 and ultrasonic sensor 13); And, improved accuracy, security and the stability of the utility model vehicle identification system 10 greatly through decision logic circuit 11 synthetic determination parking space information.

Be further to understand the utility model Vehicular system, with the recognition methods of the utility model and combine the principle of work of second preferred embodiment of accompanying drawing 2 to be further described.

1) sails the parking stall into when vehicle; The magnetic field sensor 14 that is installed on ground surface is sensed the variation that vehicle gets into magnetic field when perhaps leaving; Trigger parking stall, 13 pairs of places of ultrasonic sensor on the one hand and carry out ultrasound examination, the real-time on the other hand feedback signal with parking stall, detected place changes of magnetic field is emitted to decision logic circuit 11;

2) ultrasonic sensor 13 through magnetic field sensor 14 detection trigger after have vehicle to put in place; Transmitted wave through ultrasonic emitting, receive the tested distance of the time difference measuring vehicle between the reflection wave of vehicle reflection, and feedback signal is emitted to decision logic circuit 11;

3) said decision logic circuit 11 collects the feedback signal of the feedback signal of all ultrasonic sensors that detect 13 and magnetic field sensor 14 in self system; Analyze hyperacoustic mensuration distance through logical algorithm; When hyperacoustic mensuration distance during less than (being equal to or greater than) predeterminable range; Preliminary judgement has (nothing) vehicle parking on the parking stall; The feedback signal of combined magnetic field sensor 14 comprehensively draws a vehicle identification status data, and this vehicle identification status data is passed to wireless transport module 12 in real time;

4) said wireless transport module 12 receives the vehicle identification status data that said decision logic circuit 11 sends in real time; And be passed to remote system in real time; Remote system is obtained parking space information; Real-time and effective is precisely to the operating position (because of remote system is a prior art, being not going to repeat) of each parking stall.

5) driver arrives parking lot (position guiding) according to the guide of electronic display; Find berth (parking stall guiding) through the display device in the field; And park change or the original parked vehicles of back parking stall state of driver left the change of parking stall state behind the parking stall; Can both be collected by logic judging circuit 11 in real time, logic judging circuit 11 just can draw a vehicle identification status data.

The recognition system of the utility model is owing to adopted the recognition technology of compound sensor, and 70% accuracy rate when using magnetic field sensor 14 with tradition is single is compared significantly and improved, and actual measurement can reach more than 99.9%.Because magnetic field sensor 14 power consumptions are extremely low; Standby in real time or high frequency intermittent scanning trigger ultrasonic sensor 13 work when anomalous field changes, can make the higher ultrasonic sensor of power consumption 13 be in holding state at ordinary times; The utility model power consumption is extremely low; Significantly prolong the serviceable life of power module 15, battery module 15 5-8 that can work reaches semipermanent.The utility model also need not wiring simultaneously, and Installation and Debugging equipment is simple, and is safe and reliable, good stability, and measuring accuracy is high.

The utility model has realized that the person of parking conveniently stops; And the parking stall monitored, make parking position manage more standard, in order, improve the parking stall utilization factor; The parking stall detector adopts ultrasonic detector 13 and magnetic field sensor 14 to combine in the parking lot; Decision logic circuit 11 collects the feedback signal of all detections in self system in real time, draws on this parking stall to have or not the situation of parking, and in time is delivered to wireless transport module 12 and comes guided vehicle to berth.

Claims

1. a vehicle identification system is characterized in that said recognition system comprises

One decision logic circuit;

2. vehicle identification system as claimed in claim 1 is characterized in that said magnetic field sensor connects said decision logic circuit.