INDUCTION VEHICLE DETECTION AND IDENTIFICATION SYSTEM, INDUCTION LICENSE PLATE, AND INDUCTION READER

• US 20150041536A1
• Filed: 02/11/2013
• Published: 02/12/2015
• Est. Priority Date: 11/16/2012
• Status: Active Grant

• Current Assignee: Parallels Holdings Limited (HNA Technology Co. Ltd.)
• Original Assignee: Parallels Holdings Limited (HNA Technology Co. Ltd.)
• Inventors: Matsur, Igor Yurievich
• Granted Patent: US 9,317,724 B2
• Time in Patent Office: Days
• US Class Current: 235/382
• CPC Class Codes: B60R 13/10 Registration, licensing, or like devices
• CPC Class Codes: G06F 21/6218 to a system of files or objects, e.g. local or distributed file system or database
• CPC Class Codes: G06K 19/07309 Means for preventing undesired reading or writing from or onto record carriers
• CPC Class Codes: G06K 19/07783 the coil being planar
• CPC Class Codes: G06K 7/10267 the arrangement comprising a circuit inside of the interrogation device
• CPC Class Codes: G06K 7/10336 the antenna being of the near field type, inductive coil
• CPC Class Codes: G07C 9/20 involving the use of a pass
• CPC Class Codes: G08G 1/017 identifying vehicles G08G1/015, G08G1/054 take precedence
• CPC Class Codes: G08G 1/042 using inductive or magnetic detectors

Abstract

An induction vehicle detection and identification system comprising electronic identification devices with electronic memory, mounted on vehicles, and a reader capable of reading and/or writing data obtained from devices in HF-band. Devices have a non-volatile memory and are integrated into the vehicle'"'"'s license plate. The reader combined with a magnetic frame is in a dielectric casing, which is mounted under the roadway. It generates an alternating magnetic field, which determines the detection and identification range. Minimum time the reader requires to read discrete responses generated by electronic identification devices and to identify the vehicle is less than 25 ms. The identification devices and the reader exchange data at the rate of 1 Kbit/sec or higher, and provide data encoding and decoding, as well as data access restriction.

Claims

1. An induction vehicle detection and identification system comprising electronic identification devices with electronic memory, mounted on vehicles, and a reader capable of reading and/or writing data obtained from devices in HF-band. It features devices integrated into the vehicle'"'"'s license plate, embodied as resonators containing a multiturn loop connected to a microchip, powered by electricity induced by an external alternating magnetic field. A non-volatile memory unit stores identification data of vehicles, containing at least their license plate number.

The reader, equipped with a magnetic loop with the ratio of 1/5 to 1/2 between its perimeter and wavelength, is put into a dielectric casing, which is mounted under the roadway about 1 m deep. It generates an alternating magnetic field, which determines the detection and identification range. When signals reaching the loop are excited with power of up to 1 W, the range is 2 m long, reaches up to 1 m above the roadway and is as wide as the roadway. Minimum time the reader requires to read discrete responses generated by electronic identification devices and to identify the vehicle is less than 25 ms and proportionate to the vehicle speed (up to 250 km/h).

The embodiments of identification devices and the reader enable them to exchange data at the rate of 1 Kbit/sec. These embodiments also provide the functions of data encoding and decoding, as well as data access restriction.

2. The system of claim 1, wherein the microchip is implemented as a CPU with integral circuit base and a non-volatile memory unit in single case. It acts as both modulator and demodulator of signals.

3. The system of claim 1, wherein the non-volatile memory unit stores the license plate number of vehicle, as well as information about the owner, his/her driver'"'"'s license and warrant of fitness of the vehicle, and cargo characteristics.

4. The system of claim 1, wherein the license plate is implemented as a dielectric plate framed in a multiturn loop and covered with an identifying combination of letters and numbers for visual recognition.

5. The system of claim 1, wherein the reader with a magnetic loop is capable of reading identification data from at least 4 electronic identification devices, that are in the range of the loop, simultaneously.

6. The system of claim 1, wherein the reader provides for data exchange with electronic identification devices according to ISO-15693-3 standard (or compatible).

7. The system of claim 1, wherein the reader and electronic identification devices are able to exchange data at the rate of 1 Kbit/sec or higher.

8. The system of claim 1, wherein a vehicle is detected when the reader receives its identification code.

9. The system of claim 1, wherein a vehicle is detected when it disturbs the field around the magnetic loop upon entering its range.

10. The system of claim 1, wherein the signals reaching the loop are excited with power of up to 20 W.

11. The system of claim 1, wherein the reader is connected to a computer and can perform data exchange at the rate of 19.2 Kb/sec or higher.

12. The system of claim 1, wherein the computer contains computing and processing devices to process identification data of a vehicle and use it to control traffic.

13. The system of claim 1, wherein the reader is connected to the computer via an RS232 interface unit (or better).

14. The system of claim 1, wherein the computer and/or reader are equipped with a power supply.

15. The system of claim 1, wherein the computer can be connected to a number of readers mounted at different portions of the road.

16. The system of claim 1, wherein the magnetic loop range is 3-3.75 m wide, so as to conform to the width of the lane of the road it is placed at.

17. The system of claim 1, wherein the reader with a magnetic loop is placed at the entrance and the exit of an enclosed area (incl. parking lots) with 2.5-3 m wide passages.

18. The system of claim 1, wherein the reader generates signals to control turnpikes, gates, road barriers, or sliding electromechanical stubs.

19. The system of claim 1, wherein the reader is synchronized with visual recognition devices to check the license plate image against identification data stored in the memory unit.

20. The system of claim 1, wherein electronic identification devices and the reader are capable of checking the identification data received.

21. The system of claim 1, wherein electronic identification devices and the reader are capable of restricting access to data by means of encoding and decoding.

22. The system of claim 1, wherein the range of the loop is 2 m long, reaches up to 1 m above the roadway and

23. An induction vehicle'"'"'s license plate, which is implemented as a dielectric plate covered with an identifying combination of letters and numbers for visual recognition. It features an integrated microchip and a non-volatile memory unit with capacity of 64 bit or more to store identification data of a vehicle, at least, its license plate number. The plate is framed in a multiturn loop, which is connected to the microchip, so as to make up an HF-band electromagnetic oscillation resonator with Q-factor of 20 or more. The resonator also functions as a microchip'"'"'s power supply, when the average intensity of an external magnetic field at resonator'"'"'s resonant frequency is 10 mA/m or more. The microchip generates modulating signals, as well as modulates/demodulates resonator'"'"'s alternating current, encodes/decodes signals, and restricts access to data stored in the non-volatile memory unit.

24. The vehicle'"'"'s license plate of claim 23, wherein the microchip is implemented as a CPU-based integral circuit.

25. The vehicle'"'"'s license plate of claim 23, wherein the non-volatile memory unit can be re-programmed, stores identification data of vehicles and is capable of modulating resonator'"'"'s alternating current.

26. The vehicle'"'"'s license plate of claim 23, wherein the non-volatile memory unit is integrated into the microchip'"'"'s case.

27. The vehicle'"'"'s license plate of claim 23, wherein the multiturn loop is connected to the microchip by transformator or galvanic method.

28. The vehicle'"'"'s license plate of claim 23, wherein the multiturn loop is made of conducting materials, e.g. as metallic band or tube with a rectangular, round or complex profile.

29. The vehicle'"'"'s license plate of claim 23, wherein the multiturn loop frames the plate, protruding over its edges.

30. The vehicle'"'"'s license plate of claim 23, wherein the dielectric plate'"'"'s backside is covered with a magnetic layer.

31. The vehicle'"'"'s license plate of claim 23, wherein the induction license plate'"'"'s front side, covered with an identifying combination of letters and numbers for visual recognition, is reflective.

32. The vehicle'"'"'s license plate of claim 23, wherein the microchip has an SAW structure.

33. The vehicle'"'"'s license plate of claim 23, wherein the microchip is capable of implementing anti-collision ISO 15693, 1800-3 protocols (or compatible).

34. The vehicle'"'"'s license plate of claim 23, wherein the microchip-generated modulating signal'"'"'s spectrum width should provide for data exchange at the rate of 1 Kbit/sec or higher.

35. The vehicle'"'"'s license plate of claim 23, wherein the microchip is capable of encoding data to restrict access to its non-volatile memory unit.

36. The vehicle'"'"'s license plate of claim 23, wherein the induction license plate has holes to be mounted on the vehicle as stipulated in state standards for regular license plates.

37. The vehicle'"'"'s license plate of claim 23, wherein the induction license plate is of the same size and appearance as a regular license plate.

38. The vehicle'"'"'s license plate of claim 23, wherein the induction license plate can be mounted on the vehicle with at least 10 cm gap.

39. The vehicle'"'"'s license plate of claim 23, wherein the dielectric plate is multi-layered.

40. An induction reader comprising a magnetic loop placed under the roadway, which features a signal generator and processor and a matching node, both connected to the loop. The loop makes up a rectangular HF-band oscillating circuit made of conducting materials. Its outer surface perimeter is 10-100 mm, the ratio between its shorter side to its longer side is 1/3 to 1/8, and the ratio between its perimeter and wavelength is 1/5 to 1/2. The longer side of the loop should be oriented to be across the road lane. The loop is enclosed in a dielectric case, implemented as a 50-200 mm high box and placed about 1000 mm deep under the roadway. The dielectric layer separating the loop from its environment is 50-200 mm wide.

42. The reader of claim 40, wherein the dielectric case of the loop has 1-5 dielectric coefficient, and its dielectric loss tangent is less than 10-2-10-3.

43. The reader of claim 40, wherein the loop is made of metallic band, which is at least 0.1 mm wide.

44. The reader of claim 40, wherein the loop is made of metallic tube with a rectangular, round, or complex profile.

45. The reader of claim 40, wherein the matching node'"'"'s case is dielectric, and its dimensions are 200×

120×

70 mm.

46. The reader of claim 40, wherein the matching node is connected to signal generator and processor via a control and power cable.

47. The reader of claim 40, wherein the oscillating circuit of the induction reader is self-adjusting.

48. The reader of claim 40, wherein the signal generator and processor is capable of restricting data access by means of encoding.

49. The reader of claim 40, wherein the signal generator and processing node can also verify the received data.

50. The reader of claim 40, wherein it can be remotely adjusted, either manually or automatically, by changing loop parameters.

51. The reader of claim 40, wherein the case of the magnetic loop is resistant to vibration, precipitation, corrosive fluids and mediums, sand-salt mix, petrol, mold, and can sustain temperatures of 170°

C. or more while being laid under the roadway.

52. The reader of claim 40, wherein the case of the magnetic loop can sustain pressure of a wheelset of 10 ton of more.

53. The reader of claim 40, wherein it is connected to a computer.

41. The signal generator and processor modulates/demodulates, as well as encodes/decodes signals, and restricts access to data stored in memory.