CN205644660U - On -vehicle unit of combined type for ETC with path identification function - Google Patents

Abstract

The utility model relates to an on -vehicle unit of combined type for ETC with path identification function. On -vehicle unit includes: MCU, GSM module 5.8G radio frequency module, two interfaces CPU card, ESAM module, power module at the special GSM chip of the embedded income of on -vehicle unit customization, form the on -vehicle unit of combined type. The utility model discloses realize ambiguity path identification, the path identification who need not at highway point installation discernment station need not to insert the SIM card, also need not to pay any expense to the operator, realizes " walk how many ways, pay how many expenses " and fair, reasonable tearing open account, the clear branch between the different owners of highway.

Description

A kind of have function of path recognition ETC Use combined type board units

Technical field

This utility model belongs to technical field of intelligent traffic, relates to a kind of ETC combined type board units with function of path recognition.

Background technology

ETC(Electronic Toll Collection, electric non-stop toll) system is the autoelectrinic Fare Collection System of main research and extension, it is adaptable to the vehicle toll solution under the bridge tunnel environment of highway and heavy traffic.OBU(On-Board Unit, mobile unit) it is the standard fitting of ETC system, for being arranged on the front windshield of vehicle, when vehicle is by ETC track, OBU Yu RSU(Roadside Unit, roadside unit) etc. device talk, be not required to parking and can complete ETC charge.The road network structure of China's highway becomes increasingly complex at present, and looped network also gets more and more, the diversification of investment subjects, and highway ETC major part achieves national network simultaneously.Thus need the vehicle at highway driving is carried out accurate Path Recognition, " walk how many roads; how much is handed over " with the vehicle realized at highway driving, and between highway difference owner, the pass cost collected is realized sorting fair, rational and payment by a share of the takings.Path Recognition technology is the important topic in current intelligent traffic field, it is possible not only to realize the information intelligence of vehicle and road management, traffic efficiency can be effectively improved and save transportation and energy, and significant to the calculating of pass cost volume and the accurately fractionation of pass cost.The path identification method that China highway ETC uses at present is to set up portal frame at Path Recognition point, the microwave antenna (RSU) of one 5.8G is installed by every track above, at the vehicle equipped with ETC Special vehicle-mounted unit (OBU) through out-of-date, by in the CPU card of the coding write OBU and insertion OBU of beacon station, carry out realizing route identification, also exist and need the Path Recognition point at highway that identification station is installed.

Utility model content

Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, the dedicated GSM chip of customization it is embedded at board units, form combined type board units (composie on-board unit, be called for short C-OBU) utilize collect LAC and the CELL ID code of highway GSM base station on the way of process, so that it may carry out Path Recognition and without the Path Recognition point at highway, identification station be installed.

This utility model provides a kind of ETC board units with function of path recognition, including MCU, 5.8G radio-frequency module, Dual Interface, ESAM module, power module, it is characterised in that also include gsm module；MCU controls the workflow of board units, coordinates the collaborative work of each module；Gsm module connects MCU, gathers GSM base station information；5.8G radio-frequency module connects MCU, the information that capture setting roadside unit on portal frame sends；Dual Interface storage user's stored value card, highway information out of the station and transaction record；ESAM module is mutually authenticated with described roadside unit；Power module provides electric power.

Preferably, power module includes the ferric phosphate lithium cell of high power capacity, solar charging panel and power management chip, and power management chip connects MCU, and ferric phosphate lithium cell connects power management chip, and solar charging panel connects ferric phosphate lithium cell.

Preferably, also include Anti-dismantling module, Anti-dismantling module has the dual tamper judgment mechanism of mechanical contact and software trigger, can be effectively prevented board units illegally the uncapping of illegal dismounting and board units itself from the vehicle installed, it is ensured that equipment work normal, safe and reliable.

Preferably, also including acceleration transducer, acceleration transducer is used for activating board units.

Preferably, also including display module, display module uses OLED liquid crystal screen.

The technical scheme that embodiment of the present utility model provides can include following beneficial effect: the collocation of multiple technologies means uses, substantially the ambiguity path identification problem of MTC track and ETC track entrance vehicle is solved, the accurate identification of realizing route, accomplish " to walk how many roads, pay how many expense " and fair between highway difference owner, reasonably tear account open, sorting, have only to existing ETC ID of trace route path equipment MTC and ETC vehicle can be carried out ID of trace route path simultaneously, make full use of the GSM base station in communication network, achieve that ambiguity path identification, and without the Path Recognition point at highway, identification station is installed.Save construction cost, facilitated user, improve vehicle pass-through efficiency at expressway tol lcollection.

It should be appreciated that it is only exemplary and explanatory that above general description and details hereinafter describe, this utility model can not be limited.

Accompanying drawing explanation

Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meets embodiment of the present utility model, and is used for explaining principle of the present utility model together with description.

Fig. 1 is according to the ETC board units structure chart with function of path recognition shown in an exemplary embodiment.

Fig. 2 is according to the power module structure figure shown in an exemplary embodiment.

Fig. 3 is according to the ETC board units structure chart with function of path recognition shown in an exemplary embodiment.

Detailed description of the invention

Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.When explained below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with this utility model.On the contrary, they only with describe in detail in appended claims, the example of apparatus and method consistent in terms of more of the present utility model.

Before carrying out embodiment description, it should be noted that for convenience of description and embody, this group embodiment is towards having the ETC board units of function of path recognition, it is not limited to enumerate limited range in embodiment.

The ETC board units with function of path recognition in following exemplary embodiment is merely exemplary to describe, and has other of same characteristics with ETC and is equally applicable.

All of mobile network base station (including China Mobile, China Telecom, CHINAUNICOM) has its own uniquely whole world code, and these codes include MCC (Mobile Country Code) mobile device country code, MNC (Mobile Network Code) mobile device network code (operator), LAC (Location Area Code) Location Area Code, CELL ID (Cell Identification) cell identification code etc..For solving highway ambiguity path identification problem, as long as by LAC (the Location Area Code) Location Area Code of mobile network base station along the line for highway and CELL ID (Cell Identification) cell identification code is corresponding with corresponding express highway section title.nullWhen equipped with this board units (composie on-board unit，C-OBU) vehicle is when highway driving，LAC and CELL-ID of timing acquiring GSM base station，And be saved in board units (C-OBU) and Dual Interface，When sailing out of highway，Either walk ETC track and still walk MTC track，All can read LAC and the CELL id information of a series of GSM base stations being saved in C-OBU or Dual Interface，The calculating of the mathematical model by having built in Fare Collection System，Search corresponding express highway section title，I.e. can get vehicle actual travel path，Thus the accurate identification of realizing route，Accomplish " to walk how many roads，Pay how many expense " and fair between highway difference owner、Reasonably tear account open、Sorting.

Fig. 1 is the ETC board units structure chart with function of path recognition described in this utility model embodiment.Board units C-OBU is a kind of combined type, and board units includes MCU 1, gsm module 2,5.8G radio-frequency module 3, Dual Interface 4, ESAM module 5.

MCU 1 is microprocessor module, and MCU is the nucleus module of board units C-OBU, is mounted with firmware program, controls the workflow of board units C-OBU, coordinates the collaborative work of each module.Due to board units C-OBU need remotely with RSU(roadside unit) and GSM base station carry out data exchange, it is necessary to work in an active mode, therefore the low-power consumption problem of C-OBU to be considered when design, the MCU of the microprocessor selection low-power consumption of C-OBU.MCU is 51 single-chip microcomputers, MSP430 single-chip microcomputer, AVR single chip, ARM series etc..

Gsm module 2 is the dedicated GSM chip of customization.General GSM chip functions is powerful, includes the various functions such as call, short message receiving-transmitting, MP3, GPS location and it is necessary to inserts SIM, could work to operator's paying.Additionally power consumption is the biggest, and price is high, is not suitable for using in C-OBU.Specialized designs dedicated GSM chip, only possesses collection GSM base station LAC and CELL id information function, it is not necessary to inserting SIM, can normally work without paying any expense to operator, power consumption cost is substantially reduced.Realize embedding the GSM chip of customization in existing ETC board units, form ETC with combined type board units (C-OBU).

The high-frequency signal solution of 5.8G is transferred to base band or the high frequency by modulates baseband signals to 5.8G by 5.8G radio-frequency module 3, based on 5.8GHz frequency range special short distance communication (DSRC) technology, have employed the technical scheme of " two-piece type electronic tag+Dual Interface ", completely compatible existing ETC board units (OBU), it then follows national standard " GB/T 20851 electronic charging DSRC " and " requirement of turn pike networked electronic non-parking charge technology " (Department of Transportation 2011 No. 13).

Dual Interface 4 stores user's stored value card, highway information out of the station and transaction record etc., there is contact and noncontact two and the extraneous interface carrying out information exchange, when ETC track walked by vehicle, it carries out information exchange by the microprocessor of contact interface and C-OBU, if what vehicle was walked is MTC (manual toll collection) track, then Dual Interface carries out information exchange by the Non-contact Media Reader in non-contact interface and charging sentry box.

ESAM module 5 is primarily used to and being mutually authenticated of RSU, storage system and information of vehicles, it is ensured that transaction security is reliable, meets PBOC2.0 specification.

Power module 7 provides electric power.

Fig. 2 is the power module structure figure described in this utility model embodiment.Power module 7 includes power management chip 71, the ferric phosphate lithium cell 72 of high power capacity and solar charging panel 73.Power management chip 71 is other module for power supply under the control of MCU1, when some of which module is without working, in time by its power-off, with saves energy to greatest extent.Solar charging panel 73 can be for lithium battery electric energy supplement in the case of having the sun.

Ferric phosphate lithium cell, capacity is big, and the life-span is long, external solar charging panel, and is configured with power management chip, has under-voltage protection, battery " super-charge super-discharge " defencive function.

Vehicle power charging inlet, in case of emergency, can be charged to C-OBU by vehicle power.

Fig. 3 is the ETC board units structure chart with function of path recognition described in this utility model embodiment.Board units C-OBU is a kind of combined type, and board units includes MCU 1, gsm module 2,5.8G radio-frequency module 3, Dual Interface 4, ESAM module 5, display module 6, power module 7, Anti-dismantling module 8, acceleration transducer 9.

MCU 1 is microprocessor module, and MCU is the nucleus module of board units C-OBU, is mounted with firmware program, controls the workflow of board units C-OBU, coordinates the collaborative work of each module.Due to board units C-OBU need remotely with RSU(roadside unit) and GSM base station carry out data exchange, it is necessary to work in an active mode, therefore the low-power consumption problem of C-OBU to be considered when design, the MCU of the microprocessor selection low-power consumption of C-OBU.MCU is 51 single-chip microcomputers, MSP430 single-chip microcomputer, AVR single chip, ARM series etc..

Gsm module 2 is the dedicated GSM chip of customization.General GSM chip functions is powerful, includes the various functions such as call, short message receiving-transmitting, MP3, GPS location and it is necessary to inserts SIM, could work to operator's paying.Additionally power consumption is the biggest, and price is high, is not suitable for using in C-OBU.Specialized designs dedicated GSM chip, only possesses collection GSM base station LAC and CELL id information function, it is not necessary to inserting SIM, can normally work without paying any expense to operator, power consumption cost is substantially reduced.

The high-frequency signal solution of 5.8G is transferred to base band or the high frequency by modulates baseband signals to 5.8G by 5.8G radio-frequency module 3, based on 5.8GHz frequency range special short distance communication (DSRC) technology, have employed the technical scheme of " two-piece type electronic tag+Dual Interface ", completely compatible existing ETC board units (OBU), it then follows national standard " GB/T 20851 electronic charging DSRC " and " requirement of turn pike networked electronic non-parking charge technology " (Department of Transportation 2011 No. 13).

Dual Interface 4 stores user's stored value card, highway information out of the station and transaction record etc., there is contact and noncontact two and the extraneous interface carrying out information exchange, when ETC track walked by vehicle, it carries out information exchange by the microprocessor of contact interface and C-OBU, if what vehicle was walked is MTC (manual toll collection) track, then Dual Interface carries out information exchange by the Non-contact Media Reader in non-contact interface and charging sentry box.

ESAM(Embedded Secure Access Module) module 5 is primarily used to and being mutually authenticated of RSU, storage system and information of vehicles, it is ensured that and transaction security is reliable, meets PBOC2.0 specification.C-OBU is by embedded embedded encryption authentication module, there is safe file key management, the characteristics such as perfect security mechanism, the encryption and decryption calculation function of standard, identity recognition function, carry out bidirectional identity authentication with RSU, complete the safety storage of data, encrypting and decrypting, access privilege control etc., meet China's finance integrated circuit (IC) card specification (PBOC2.0).

Display module 6 display module uses advanced OLED liquid crystal screen, low in energy consumption, definition is high, brightness is high, the duty of display C-OBU and the stateful transaction of user.Complete in transaction, plug-in card pulls out card and battery electric quantity low when, all can show relevant information.

Power module 7 includes the ferric phosphate lithium cell of high power capacity, solar charging panel and power management chip.Power management chip is other module for power supply under the control of MCU, when some of which module is without working, in time by its power-off, with saves energy to greatest extent.Solar charging panel can be for lithium battery electric energy supplement in the case of having the sun.

Anti-dismantling module 8 has the dual tamper judgment mechanism of mechanical contact and software trigger, can be effectively prevented C-OBU illegally the uncapping of illegal dismounting and C-OBU itself from the vehicle installed, it is ensured that equipment work normal, safe and reliable.

Acceleration transducer 9 is in order to extend the working time of C-OBU to greatest extent, the C-OBU most of the time is at resting state, being activated needs when, the mode of activation has multiple, as RSU activation, card reader activation, timed activation, Dual Interface insert activation etc..Acceleration transducer is the one in multiple activation mechanism, its effect is when the vehicle being provided with C-OBU enters highway not over ETC track, but in advance CPU card is pulled up from C-OBU, from MTC(manual toll collection) track entrance highway, so RSU will be unable to activate C-OBU, it is not turned on intervalometer, the most just cannot gather the information of the CELL ID of GSM base station on the way.But as long as vehicle reaches default road speed, acceleration transducer will activate C-OBU, open intervalometer, make C-OBU normally to work, and is saved in C-OBU by the CELL ID of the GSM base station collected.When vehicle sets off, if ETC departures walked by vehicle, in C-OBU, the CELL ID of existing base station, can identify path accordingly.If still walking the departures of MTC track, during fee-collector's Card Reader, when being not read out the CELL id information of base station in card, fee-collector may require that driver takes off Card Reader in CPU card is inserted into C-OBU again, as long as CPU card one is inserted in C-OBU, the base station CELL id information being saved in advance in C-OBU will be written in CPU card, again during Card Reader, CELL ID can be read, the most just can determine driving path accurately.

Therefore, C-OBU has the multiple activation mechanisms such as roadside unit RSU activation, card reader activation, timed activation, Dual Interface insertion activation, and C-OBU is in full resting state at ordinary times, and in this case, C-OBU is in low-power consumption mode, does not the most consume electricity.When entering highway, it is arranged on (RSU) of charge station's ETC entrance lane, C-OBU can be activated, and by relevant charge data: as in the write C-OBU such as entrance name of station, entry time and be inserted on the Dual Interface on C-OBU, C-OBU enters again low-power sleep state therewith, and starts built-in intervalometer.

If being entered the station by artificial track (MTC), Dual Interface can be write, by read write line, the pay imformation entered the station, when IC-card inserts C-OBU, and can be according to the of short duration activation C-OBU of mark that enters the station in IC-card, pay imformation in IC-card is write in C-OBU, and starts the built-in intervalometer of C-OBU.If IC-card is not inserted in C-OBU by driver, as long as vehicle enters at a high speed, once speed is close to the road speed preset, and acceleration transducer is also by of short duration activation C-OBU, and starts built-in timer.

Vehicle is when highway driving, and according to timing set in advance, C-OBU can activate automatically, and gather the CELL ID of institute traveling highway GSM along the line base station, and be written in C-OBU and Dual Interface, after completing, C-OBU enters again resting state, waits next timing wake-up.

When vehicle sails out of highway, enter the ETC track of outlet station, C-OBU is activated by the roadside unit (RSU) being arranged on ETC track, reading and saving charge data in C-OBU and Dual Interface and the CELL ID of GSM base station collected on the way, through Fare Collection System calculating, find out the express highway section title of correspondence, the accurate driving path finally drawing this vehicle and the pass cost amount of money that should pay, then be traded, after transaction, C-OBU is again introduced into full resting state.

If vehicle sails out of highway by artificial track, then fee-collector reads the pay imformation in IC-card and the CELL ID of a series of GSM base station by contact IC card reader, calculating through Fare Collection System processes, and draws accurate routing information, then is traded.If there is no the CELL ID of GSM base station in IC-card, fee-collector may require that IC-card is inserted in C-OBU by driver, now C-OBU can of short duration be activated, and the CELL ID that will remain in the GSM base station in C-OBU is written in IC-card, and after completing aforesaid operations, C-OBU will enter again full resting state.IC-card can be given fee-collector and again carry out charge transaction by driver.

Those skilled in the art are considering description and are putting into practice here after utility model, will readily occur to other embodiment of the present utility model.The application is intended to any modification of the present utility model, purposes or adaptations, and these modification, purposes or adaptations are followed general principle of the present utility model and include common knowledge in the art or conventional techniques means.Description and embodiments is considered only as exemplary, and true scope of the present utility model and spirit are pointed out by claim below.

It should be appreciated that this utility model is not limited to precision architecture described above and illustrated in the accompanying drawings, and various modifications and changes can carried out without departing from the scope.Scope of the present utility model is only limited by appended claim.

Described above to institute's embodiment, makes professional and technical personnel in the field be capable of or uses this utility model.Multiple amendment to these embodiments will be apparent from for those skilled in the art, and generic principles defined herein can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principle herein and features of novelty.

Claims (10)

1. there is an ETC combined type board units for function of path recognition, including MCU, 5.8G radio-frequency module, Dual Interface, ESAM module, power module, it is characterised in that also include gsm module；

Described MCU controls the workflow of board units, coordinates the collaborative work of each module；

Described gsm module connects described MCU, gathers GSM base station information；

Described 5.8G radio-frequency module connects described MCU, the information that capture setting roadside unit on portal frame sends；

Described Dual Interface storage user's stored value card, highway information out of the station and transaction record；

Described ESAM module is mutually authenticated with described roadside unit；

Described power module provides electric power.

Board units the most according to claim 1, it is characterized in that, described power module includes the ferric phosphate lithium cell of high power capacity, solar charging panel and power management chip, described power management chip connects described MCU, described ferric phosphate lithium cell connects described power management chip, and described solar charging panel connects described ferric phosphate lithium cell.

Board units the most according to claim 1, it is characterized in that, also include Anti-dismantling module, described Anti-dismantling module has the dual tamper judgment mechanism of mechanical contact and software trigger, can be effectively prevented board units illegally the uncapping of illegal dismounting and board units itself from the vehicle installed.

Board units the most according to claim 1, it is characterised in that also include that acceleration transducer, described acceleration transducer are used for activating board units.

Board units the most according to claim 1, it is characterised in that also include display module, described display module uses OLED liquid crystal screen.

Board units the most according to claim 1, it is characterised in that described collection GSM base station information includes Location Area Code LAC and cell identification code CELL id information, and Location Area Code LAC and cell identification code CELL ID is corresponding with corresponding express highway section title.

Board units the most according to claim 6, it is characterised in that vehicle when highway driving, LAC and the CELL ID of timing acquiring GSM base station, and being saved in board units and Dual Interface；Fare Collection System builds mathematical model and calculates, and searches corresponding express highway section title, obtains vehicle actual travel path, it is achieved the accurate identification in path.

Board units the most according to claim 7, it is characterized in that, vehicle sails out of highway by artificial track, then fee-collector reads the pay imformation in card and the CELL ID of a series of GSM base station by Dual Interface read write line, calculating through Fare Collection System processes, draw accurate routing information, then be traded.

Board units the most according to claim 7, it is characterized in that, entered the station by artificial track, described Dual Interface can be write, by read write line, the pay imformation entered the station, when Dual Interface inserts board units, according to the of short duration activation board units of mark that enters the station in Dual Interface, pay imformation is write board units, and starts the intervalometer that board units is built-in.

Board units the most according to claim 9, it is characterized in that, vehicle is when highway driving, according to timing set in advance, board units can activate automatically, and gathers the CELL ID of institute traveling highway GSM along the line base station, and is written in board units and Dual Interface, after completing, board units enters again resting state, waits next timing wake-up.