CN202887471U - Vehicle management device based on radio frequency - Google Patents

Abstract

The utility model discloses a vehicle management device based on radio frequency comprising a monitor and an electronic license plate. The monitor can be used to send a reading instruction to the electronic license plate, and to receive a verified password returned by the electronic license plate. After the verification is passed, the reading instruction can be sent to the electronic license plate, and the information continuously sent by the electronic license plate can be received by the monitor, and then the speed and the position of the vehicle can be determined according to the continuously sent information. The electronic license plate is disposed on the vehicle, and can be used to receive the reading instruction sent by the monitor, and can be used to send the verification password to the monitor, and then can verify the reading password sent by the monitor, thereafter can be used to continuously send the information to the monitor. According to the utility model, the monitor comprises an electronic license plate reader, which can be used to read the information of the electronic license plate in a real-time manner, therefore the detection of the e-dog can be prevented; the fast search of the illegal vehicles can be realized; the vehicle positioning can be quickly realized at the same time of measuring the velocity; the occupation of the emergency lane can be prevented, and the lane occupation of lorries and motor buses can be discriminated.

Description

A kind of vehicle management equipment based on radio frequency

Technical field

The utility model relates to a kind of vehicle management equipment based on radio frequency.

Background technology

At present, common licence plate and automobile are corresponding one by one, for false-trademark, deck, the violation of law such as block, can only artificial cognition, and it is larger to search the illegal vehicle difficulty, is difficult to management.Particularly more be difficult to monitoring for the illegal activities in expressway and city.

In order to strengthen the management of vehicle, behavior is in time monitored to vehicle illegal, and relevant department has used the technology such as velocity radar, yet there are the problems such as cost is high, installation difficulty, Maintenance Difficulty, universal difficulty in these velocity measuring techniques; The lawbreaker can use cyberdog can detect velocity radar, realizes hiding.Therefore, the supvr can not realize testing the speed and locating, and demands urgently improving.

The utility model content

For the problem that prior art exists, the purpose of this utility model is to propose a kind of vehicle management equipment based on radio frequency, by enforcement of the present utility model, can accurately carry out vehicle speed measuring and location.

For reaching this purpose, the utility model by the following technical solutions:

A kind of vehicle management equipment based on radio frequency comprises:

Monitor, be used for sending the reading instruction to electronic license plate, receive the authentication password that described electronic license plate returns, after checking is passed through, send the reading instruction to described electronic license plate, and receive the information that described electronic license plate sends continuously, determine speed and the position of vehicle according to the information of described continuous transmission;

Electronic license plate is arranged on the vehicle, be used for receiving the reading instruction that described monitor sends after, send authentication password to described monitor, and at the password read of receiving that described monitor sends, and after audit passes through, send continuous information to described monitor.

Preferably, described monitor also is used for sending traffic information and speed-limiting messages to described electronic license plate, and speed and the positional information of storing described vehicle in this locality;

Described electronic license plate also is used for showing traffic information and the speed-limiting messages that described monitor sends by the loudspeaker broadcast or by display screen.

Preferably, also comprise: host computer,

Described monitor also is used for being sent to host computer by wired or wireless speed with described vehicle and positional information and preserves.

Preferably, whether described host computer also is used for according to vehicle speed and this vehicle of position information confirming of described monitor acquisition illegal.

Based on disclosing of above technical scheme, the utility model possesses following beneficial effect:

The utility model, monitor comprise an electronic license plate reader, real-time read electric license board information, the detection of having stopped cyberdog; Realization is to the fast finding of illegal vehicle; When testing the speed, realize vehicle location, stop to take the Emergency Vehicle Lane phenomenon, discriminating truck, motor bus road occupying violating the regulations are travelled.

Description of drawings

Fig. 1 is the vehicle management testing of equipment synoptic diagram based on radio frequency of theutility model embodiment 1;

Fig. 2 be theutility model embodiment 1 based on monitor synoptic diagram in the vehicle management equipment of radio frequency;

Fig. 3 be theutility model embodiment 1 based on electronic license plate synoptic diagram in the vehicle management equipment of radio frequency.

Embodiment

Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment:

Embodiment 1 provides a kind of vehicle management equipment based on radio frequency, and the synoptic diagram that this vehicle management equipment (for example uses at highway or urban road) in real work as shown in Figure 1.On the roadnext door monitor 10 is set, be used for sending the reading instruction to electronic license plate, receive the authentication password that described electronic license plate returns, after checking is passed through, send the reading instruction to described electronic license plate, and receive the information that described electronic license plate sends continuously, determine speed and the position of vehicle according to the information of described continuous transmission.Monitor 10 can be located in the isolation strip, and direction is aimed at road.At tested vehicleelectronic license plate 20 is set, be used for receiving the reading instruction that described monitor sends after, send authentication password to described monitor, and at the password read of receiving that described monitor sends, and after audit passes through, send continuous information to described monitor.In addition, describedmonitor 10 also is used for sending traffic information and speed-limiting messages to describedelectronic license plate 20, and speed and the positional information of storing described vehicle in this locality; Describedelectronic license plate 20 also is used for showing traffic information and the speed-limiting messages that describedmonitor 10 sends by the loudspeaker broadcast or by display screen.

Electronic license plate 20 is provided when vehicle is examined annually by vehicle supervision department, can glue to be posted on the front windshield, has Anti-dismantling, and electronic license plate damages after the orcible entry, andelectronic license plate 20 is active label, and replaceable battery is convenient to install, safeguard.If tested vehicle is travelled by north orientation south, with speed v successively throughposition 1, position 2 ..., position n, position n+1,monitor 10 is d with the vertical range of vehicle heading; The angle ofmonitor 10 to the vertical line of vehicle heading and monitor 10 toelectronic license plate 20 lines is θ₁, θ₂..., θ_n, θ_N+1

Wherein,monitor 10 as shown in Figure 2, comprise: antenna, electroniclicense plate reader 11, CPU(Central Processing Unit, CPU (central processing unit)) 12, ROM(Read-Only Memory, ROM (read-only memory)) 13, RAM(Random Access Memory, random access memory) 14, EEPROM(Electrically Erasable Programmable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)) 15, DSP(Digital Signal Processing, digital signal processor) 16,signal processing circuit 17 and power supply 18.CPU12 and ROM13, RAM14, EEPROM15, DSP16, electroniclicense plate reader 11 are connected with power supply and are connected, and communicate control; Electroniclicense plate reader 11 is communicated by letter withelectronic license plate 20 by antenna; CPU12 sends to host computer storage information with monitoring result, and is sent to preservation by wired or wireless, and whether host computer (being system equipment) is illegal according to vehicle speed and this vehicle of position information confirming that described monitor obtains.Monitor can have 1 or n antenna, and when antenna was 1, antenna spacing was with equal time successively acknowledge(ment) signal; When antenna number n 〉=5, antenna is connected work successively: whenantenna 1 was opened, antenna 2,3,4,5 cut out, and closed afterantenna 1 receives signal, antenna 2 is open-minded, and antenna 3,4,5 continues to cut out, and closes after antenna 2 receives signal, antenna 3 is open-minded, and antenna 4,5 continues to cut out, by that analogy.

Monitor is according to Doppler's principle, and the information of electronic license plate transmission, speed and the position of calculating vehicle.

Computing formula:

$f_d=\frac{f}{c}\×v\×\cos \mathrm{\θ}$

Wherein: f_dBe doppler drift, f is the transmission frequency of electronic license plate, and c is the light velocity, and v is the travel speed of tested vehicle, and cos θ is the cosine of the angle of highway perpendicular line and electronic license plate, monitor line, and t is the interval time of electronic license plate transmitted signal.

In conjunction with Fig. 1, can list following equation (1)-(11), find the solution the relative coordinate and the actual travel speed that obtain the vehicle measured point; Wherein, v and θ because d is known, calculate θ for treating measured value, just can obtain the particular location of vehicle.

$f_{d(n+1)}-f_{d\left(n\right)}=\frac{f}{c}\×v\×\cos {\mathrm{\θ}}_{(n+1)}-\frac{f}{c}\×v\×\cos {\mathrm{\θ}}_{\left(n\right)}---\left(1\right)$

v×t=(tgθ_(n)-tgθ_(n+1）)×d （2）

${\mathrm{<figure-callout\; label="f\; d"\; filenames="HDA00002159140400011.png"\; state="\{\{state\}\}">f</figure-callout>}}_d=\frac{f}{c}\&times;v\&times;{\cos \mathrm{\&theta;}}_1=f_1-f---\left(3\right)$

$f_{d2}=\frac{f}{c}\&times;v\&times;{\cos \mathrm{\&theta;}}_2=f_2-f---\left(4\right)$

$f_{d3}=\frac{f}{c}\&times;v\&times;{\cos \mathrm{\&theta;}}_3=f_3-f---\left(5\right)$

$f_{d4}=\frac{f}{c}\&times;v\&times;{\cos \mathrm{\&theta;}}_4=f_4-f---\left(6\right)$

$f_{d5}=\frac{f}{c}\&times;v\&times;{\cos \mathrm{\&theta;}}_5=f_5-f---\left(7\right)$

v×t=(tgθ₁-tgθ₂)×d （8）

v×t=(tgθ₂-tgθ₃)×d （9）

v×t=(tgθ₃-tgθ₄)×d （10）

v×t=(tgθ₄-tgθ₅)×d （11）

Certainly, according to the instruction of reader, but send the information that tests the speed except consecutive intervals, the single that also can be used for the normal reading information record in city reads.

Electronic license plate 20 comprises as shown in Figure 3: antenna,emission control module 21, radio-frequency module 22, CPU23, ROM24, RAM25, EEPROM26,loudspeaker 27,power supply 28, display screen 29.CPU23 and ROM24, RAM25, EEPROM26, radio-frequency module 22,loudspeaker 27,power supply 28 are connected with display screen and are connected, and communicate control, and show speed-limiting messages, carry out voice broadcast byloudspeaker 27 bydisplay screen 29; Radio-frequency module 22 is communicated by letter withmonitor 10 with antenna by transmitting/receivingcontrol module 21.

For the vehicle that enters highway, when entering high speed, bayonet socket reading tag, and writing system; When vehicle left high speed, bayonet socket read electric license board information uploaded to system, is confirmed whether illegal according to canned data by system; If without storage information, being judged to be, electronic license plate blocks electronic license plate, illegal processing.

The utility model increases an electronic license plate reader at monitor, real-time read electric license board information, the detection of having stopped cyberdog; Realization is to the fast finding of illegal vehicle; When testing the speed, realize vehicle location, stop to take the Emergency Vehicle Lane phenomenon, discriminating truck, motor bus road occupying violating the regulations are travelled.

In addition, the utility model also can be used for the ETC identification of paying the fees, and other vehicles disturb or lie disturbs when preventing from paying the fees.

The above; it only is the better embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, all should be encompassed within the protection domain of the present utility model.

Claims (4)

1. the vehicle management equipment based on radio frequency is characterized in that, comprising:

Monitor, be used for sending the reading instruction to electronic license plate, receive the authentication password that described electronic license plate returns, after checking is passed through, send the reading instruction to described electronic license plate, and receive the information that described electronic license plate sends continuously, determine speed and the position of vehicle according to the information of described continuous transmission;

Electronic license plate is arranged on the vehicle, be used for receiving the reading instruction that described monitor sends after, send authentication password to described monitor, and at the password read of receiving that described monitor sends, and after audit passes through, send continuous information to described monitor.

2. the vehicle management equipment based on radio frequency according to claim 1 is characterized in that,

Described monitor also is used for sending traffic information and speed-limiting messages to described electronic license plate, and speed and the positional information of storing described vehicle in this locality;

Described electronic license plate also is used for showing traffic information and the speed-limiting messages that described monitor sends by the loudspeaker broadcast or by display screen.

3. the vehicle management equipment based on radio frequency according to claim 1 is characterized in that, also comprises: host computer,

Described monitor also is used for being sent to host computer by wired or wireless speed with described vehicle and positional information and preserves.

4. the vehicle management equipment based on radio frequency according to claim 3 is characterized in that,

Whether described host computer also is used for according to vehicle speed and this vehicle of position information confirming of described monitor acquisition illegal.

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