CN200990146Y

CN200990146Y - Multichannel identification apparatus

Info

Publication number: CN200990146Y
Application number: CNU2006200322542U
Authority: CN
Inventors: 刘明豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-09
Filing date: 2006-06-09
Publication date: 2007-12-12
Anticipated expiration: 2016-06-09

Abstract

The utility model discloses a multipath identification device. A shell is internally provided with a power circuit, a charging system, a status indicator, a memory device, an SPI interface, a microcontroller MCU circuit, an aerial receiver-transmitter, a filter circuit, an RF transceiver core and a clock system; wherein, the power circuit is connected with the microcontroller MCU circuit of a main controller; the memory device is connected with the microcontroller MCU circuit of a main controller through the SPI interface; the microcontroller MCU circuit of a main controller is in a bi-directional connection with an RF transceiver core; the RF transceiver core is in a bi-directional connection with the filter circuit; the filter circuit is in a bi-directional connection with the aerial receiver-transmitter; and the clock system has an output end of the circuit connected with the microcontroller MCU circuit of a main controller. Owing to the adoption of the structure, the utility model organically integrates two sets of systems which may work at the same time without interference. The utility model is applied to systems such as freeway charging system for accurate splitting charges of amount to be charged.

Description

Multipath Recognition Device

Technical field

The utility model relates to a kind of Intelligent traffic management systems, especially relates to the Multipath Recognition Device in a kind of intelligent transportation field.The utility model relates to the information of vehicles statistics under the mobile environment, can be widely used in expressway tol lcollection, municipal intelligent traffic management, physical-distribution intelligentization, short distance moving communicating fields such as traffic intelligentization.

Background technology

At present, multichannel is a important topic in the domestic and international intelligent traffic ITS field through recognition technology, be to realize that vehicle exercises and the intelligentized important means of road management, and also be the important evidence of expressway tol lcollection.Multichannel can realize the function that vehicle running path indicates through recognition technology because of it, makes vehicle ' and road management intellectuality, informationization, has great importance aspect the transportation and energy traffic efficiency, road improvement traffic environment being provided and saving.

Both at home and abroad in multichannel through also being in the starting stage aspect the R and D of recognition technology, product not relevant on the market occurs.Multichannel is to realize being installed on the vehicle, be mounted with vehicle and the electronic label device of information such as pay dues and the wireless telecommunications and the wireless information interaction process that are arranged between electronics read-write equipment by the road and the charge station's read-write equipment by certain code requirement through the main direction of studying of recognition technology.

Expressway tol lcollection mainly is to rely on shortest path through charge at present, and the foundation of charge is the information of station up and down of vehicle.This charging method simple possible, but the freeway net of road network complexity can not be applicable to.Owing to can not discern the enforcement path of each car accurately, therefore can not reach the requirement of " walk how many roads, what are received take ".The charge voucher that existing unified Fare Collection System uses is the non-contact IC card of providing during by last station that records last station information, judges the amount of money of charging according to the last station information on the card during following station.

The foundation that the fractionation of the expressway tol lcollection amount of money does not at present have a kind of strong data to split as toll amount, current solution is by certain mathematical model, carry out certain probability statistics, split according to model, the owner that need be correlated with when generation can't split the amount of money holds consultation and solves.

This kind method has following drawback:

1. systematic parameter source accuracy can't guarantee

2. systematic parameter is upgraded and is lagged behind, and error is bigger

3. be applicable to the simple situation of road network situation, when road network situation more complicated, can produce a large amount of splitting of values objections owner that need be correlated with and hold consultation

4. when producing objection, can't provide strong, compellent foundation because of splitting of values

5. when generation can't split the amount of money, substantial contribution is detained, influences the normal O﹠M of highway

In a word, in present expressway tol lcollection is used, also do not have a kind of can the registration of vehicle run routing information, the designation equipment that compatible simultaneously existing charge characteristics require.

Summary of the invention

The purpose of this utility model just is to provide a kind of driving information of discerning vehicle more accurately and quickly, makes things convenient for Multipath Recognition Device in the intelligent transportation field of expressway tol lcollection.

The purpose of this utility model can realize by following measure:

The utility model comprises housing, is provided with on power circuit, charging system, state indication, memory storage, SPI interface, the microprocessor MCU circuit in housing, dual-mode antenna, filtering circuit, radio-frequency (RF) transceiver, clock system; Wherein power supply is connected on the primary controller microprocessor MCU circuit, memory storage is connected on the primary controller microprocessor MCU circuit by the SPI interface, the two-way radio-frequency (RF) transceiver that is connected to of primary controller microprocessor MCU circuit, the two-way filtering circuit that is connected to of radio-frequency (RF) transceiver, the two-way dual-mode antenna that is connected to of filtering circuit, the output terminal of clock system circuit are attached on the primary controller microprocessor MCU circuit.

Circuits System in the utility model middle shell adopts double frequency dual micro processor MCU double circuit.On primary controller microprocessor MCU circuit, also be connected with condition indication circuit.Power module adopts general button cell, and is a kind of rechargeable battery.

The utility model is owing to adopt said structure, organic integration two cover systems, two cover systems can be worked simultaneously in mutually noninterfere, can be applied to highway tolling system, also can be applicable to the municipal intelligent traffic management, physical-distribution intelligentization, short distance moving communicating fields such as traffic intelligentization.Can accurately discern the driving path of vehicle by this indication equipment, thereby judge the highway section of vehicle ', charge according to the highway section then, carry out the fractionation of toll amount.When producing objection owing to splitting of values, can be as the important evidence of consulting between the owner.It has following advantage:

1. may be simultaneously operated under two kinds of frequencies

2. there is a kind of module damage not influence use

3. can write down many roads through information

4. support programming

5. compatible fully with existing system

Description of drawings

Fig. 1 is a schematic block circuit diagram of the present utility model;

Fig. 2 is circuit theory diagrams figure of the present utility model;

Embodiment

The utility model is done with detailed description below in conjunction with drawings and Examples:

As shown in the figure, the utility model comprises housing, is provided with on power circuit, charging system, state indication, memory storage, SPI interface, the microprocessor MCU circuit in housing, dual-mode antenna, filtering circuit, radio-frequency (RF) transceiver, clock system; Wherein power supply is connected on the primary controller microprocessor MCU circuit, memory storage is connected on the primary controller microprocessor MCU circuit by the SPI interface, the two-way radio-frequency (RF) transceiver that is connected to of primary controller microprocessor MCU circuit, the two-way filtering circuit that is connected to of radio-frequency (RF) transceiver, the two-way dual-mode antenna that is connected to of filtering circuit, the output terminal of clock system circuit are attached on the primary controller microprocessor MCU circuit.Circuits System in the housing adopts double frequency dual micro processor MCU double circuit.On primary controller microprocessor MCU circuit, also be connected with condition indication circuit, certainly, also can starve and not establish condition indication circuit.Power module adopts general button cell, and is a kind of rechargeable battery.

Principle of work of the present utility model is as follows: the utility model is by the cartridge indoor design, and the design of circuit board combines, and provides two cover antennas to use simultaneously in the maximum magnitude.

Circuit structure is described in detail as follows:

System adopts double frequency dual micro processor MCU double circuit, wherein 433MHz high frequency designation system chip adopts the system-level RF chip nRF9E5 of Nordic VLSI company, its built-in nRF905433/868/915MHz transceiver, 8051 compatible microcontrollers and 10 80ksps A/D converters of 4 inputs.Can work in ShoekBurst (handling prefix, address and CRC automatically) mode.The built-in voltage adjusting module suppresses noise to greatest extent, and the operating voltage of system is 1.9～3.6V, and carrier wave detects.NRF905 has low in energy consumption, the advantage of reliable operation.It not only at inside solidification according to the wireless data transceiving program of special-purpose short distance communications protocol standard, and finish to the microwave transmitting and receiving circuit clock circuit, memory circuit, being electrically connected of powered battery control circuit by interface circuit.

EEPROM is 25AA320, and 25AA320 is the 32Kb serial EEPROM, communicates by SPI interface and nRF9E5, as the procedure stores carrier of system.Bus signals needs clock input (SCK), and (Low-Power CMOS A technology is adopted in SD and data outputs (SO), has protection and built-in write protection that block writes, and high reliability is wiped/write for 1,000,000 times, and data were preserved 200 years in the data input.

Electrify restoration circuit is the special-purpose reset circuit of systematic microprocessor, only when battery is packed into, provide power supply by power-supply controller of electric to microprocessor and main circuit, simultaneously provide reset pulse, to satisfy the requirement that resets that microprocessor starts operation, thereupon to microprocessor, microprocessor is finished initialization, after one section time-delay, system enters the power saving park mode, and the effect of electrification reset finishes thereupon.Unless the replacing battery, otherwise electrify restoration circuit is not restarted.

Power module adopts general circular button cell, 3 volts of power supplys are provided and can charge to system.J6 (BAT) provides power supply by J4 and J5 to smart card during normal the use, and wherein J4 is VCC, and J5 is GND.When charging, charging+utmost point J2 passes through triode T1 resistance R 1 to BAT charging J1, J3 is negative pole, is furnished with the synchronism that realizes storage administration and charging maintenance when depositing in the card case of power supply again, and the design of negative pole symmetry can prevent that card wrong plug mistake from causing damage, and the encapsulation of shell ultrasonic technology can be guaranteed the waterproof and dampproof short circuit that prevents.

The communication of double frequency intelligence designation card realizes

(J4 is anodal to circular button cell by electrode, J5 is a negative pole) power to system, when system powers on, electrify restoration circuit POWER RESET starts, SPI links to each other with the outer 25AA320 of sheet automatically, after nRF9E5 powers on, processor automatically performs the code in the rom boot district, system is according to boot, by pin MISO (data that the SDO of reception EEPROM sends here), SCK (clock signal being provided for the SCK of EEPROM), MOSI (transmitting data to the SDI of EEPROM), EECSN (sending enable signal for the CSN of EEPROM) copies the program code among the EEPROM (25AA320) among the 4KB RAM of nRF9E5 to.After electrification reset is finished, enter the power saving park mode through one section delayed time system.When the card system passes through the inlet induction zone, the built-in 433/868/915MHz transceiver of nRF9E5 receives that by dual-mode antenna and match circuit the 433MHz that access device sends wakes microwave signal up, carrier wave detects (cd) and uprises, microprocessor MCU became 1 second from flyback cycle by 1 minute, become duty and empty the data storage RAM of 4K by the warehouse-in state, automatically detect battery electric quantity, prompting when electric weight is not enough, when receiving an effective address, matching addresses (am) is put height, trigger simultaneously and work under the ShockBurst receive mode, when receiving the rf data bag (access station information and real-time time information) of effective address (the crc verification is correct), nRF9E5 removes lead code address and crc position, matching addresses register-bit (AM) and DSR register-bit (DR) are put height, microprocessor MCU enters low-power consumption mode to the TRX|__CE bottom set, and microprocessor MCU passes through SPI interface sense data with suitable speed.NRF9E5 matching addresses register-bit (AM) and DSR register-bit (DR) are put low.Microprocessor MCU writes nRF9E5 to the address and the data of the contact that will send, it is that height activates nRF9E5 ShockBurst and carries out data transmission that microprocessor MCU is provided with TRX|__CETX|__EN, nRF9E5 adds prefix and CRC check for its data that will send, being converted to the microwave radiation signal by antenna launches, after data send, DSR register-bit (DR) is put height and is notified microprocessor MCU data to dispose, and nRF9E5 enters standby electricity-saving mode.When nRF9E5 and access device carried out the message exchange of 433MHz, IC-card carried out the synchronous communication of 13.56MHz with the inlet read-write equipment, between the two owing to work in the frequency that differs far away and do not disturb mutually.

When induction zone is stood by indicating by the card system, nRF9E5 carries out message exchange with the frequency of operation of 433MHz with the sign station equally, indicate the rf data bag that sends at the station and comprise station information and the real-time time information of indicating, this packet forms the data accumulation storage after being stored in the access station packet.Do not have the IC-card read-write equipment owing to indicate the station, so IC-card does not participate in communication.The unifrequency equipment work that just has only 433MHz in the beacon station system.

When the card system passes through the outlet induction zone, the 433MHz microwave signal that the outlet sensing apparatus sends is detected by nRF9E5, carrier wave detects (cd) and uprises, change duty and carry out the electric weight detection, nRF9E5 is by ANT1 under the ShockBurst receive mode, and antenna that ANT2 connects and match circuit receive outlet station information.ShockBurst send mode nRF9E5 the gateway information of storing among the data storage RAM of 4K and indicate station information and separately temporal information send to the outlet station equipment, the outlet station equipment receives after end-of-data mark delivers microcomputer network to reception information, be in waiting status, wait for next time and triggering.And nRF9E5 sends after the data, and becoming 1 minute from flyback cycle by 1 second, oneself state becomes the warehouse-in state by duty to the end signal trigger automatically, to reduce power consumption.

Claims

1, a kind of Multipath Recognition Device, it comprises housing, it is characterized in that: be provided with on power circuit, charging system, state indication, memory storage, SPI interface, the microprocessor MCU circuit in housing, dual-mode antenna, filtering circuit, radio-frequency (RF) transceiver, clock system; Wherein power supply is connected on the primary controller microprocessor MCU circuit, memory storage is connected on the microprocessor MCU circuit by the SPI interface, the two-way radio-frequency (RF) transceiver that is connected to of microprocessor MCU circuit, the two-way filtering circuit that is connected to of radio-frequency (RF) transceiver, the two-way dual-mode antenna that is connected to of filtering circuit, the output terminal of clock system circuit is attached on the microprocessor MCU circuit.

2, Multipath Recognition Device according to claim 1 is characterized in that: the Circuits System in the described housing adopts double frequency dual micro processor MCU double circuit.

3, Multipath Recognition Device according to claim 1 and 2 is characterized in that: also be connected with condition indication circuit on described primary controller microprocessor MCU circuit.

4, multipath intelligent identification device according to claim 1 and 2 is characterized in that: described power module adopts general button cell, and is rechargeable battery.