Vehicle-mounted unit of 5.8 GHz electronic toll collection system

An electronic non-stop, on-board unit technology, applied in instruments, ticketing equipment, etc., can solve problems such as vehicle congestion at toll stations, loss of fares, and on-site disputes, achieving high stability and reliability, convenient use and maintenance, and investment. low cost effect

Inactive Publication Date: 2011-09-14
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Pass tickets are issued at the entrance, and pass tickets are collected at the exit. Vehicles need to stop twice, resulting in a decrease in road traffic efficiency. The traffic efficiency of toll stations has become a bottleneck restricting the improvement of road traffic efficiency. Many road sections have traffic jams at toll stations Happening
[0004] 2. There is a problem of different standards for manual identification of vehicle models
In the actual charging work, there are often situations where the actual tonnage of the vehicle does not match the tonnage marked on the driving license. Only by manually distinguishing the model and tonnage, there is a big difference, which leads to inconsistent charging standards and often causes on-site disputes
[0005] 3. Cash transactions have disadvantages
The speed of cash transactions is slow, which leads to the inability to increase the speed of vehicles; corruption and cheating are prone to occur in the toll collection work, resulting in the loss of fares and chaotic financial management.
[0006] 4. High infrastructure and labor costs
Due to the traditional charging method, it is necessary to build a huge toll plaza and toll station facilities at the entrance and exit of the expressway, and the infrastructure cost is relatively high
Moreover, manual participation in the charging process is required, and labor costs cannot be saved
[0007] 5. It is not conducive to the promotion of highway network toll collection and highway information management
However, due to the early start of these companies, the 5.8GHz electronic tags produced by them are technically not fully in line with the provisions of my country's ETC & DSRC Chinese national standards
In the prior art, there is no vehicle-mounted unit of the 5.8GHz electronic non-stop charging system for road charging that meets the national DSRC standard

Method used

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  • Vehicle-mounted unit of 5.8 GHz electronic toll collection system
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  • Vehicle-mounted unit of 5.8 GHz electronic toll collection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The above-mentioned main processor unit 1, JTAG debugging interface 6 and anti-disassembly module 7 see figure 2 .

[0054] The microprocessor chip U1 in the main processor unit 1 selects TI's high-performance, low-power consumption MSP43016-bit high-end microprocessor MSP430F149. It adopts the reduced instruction set RISC structure, has rich addressing modes, concise kernel instructions and a large number of simulation instructions, a large number of registers and on-chip data memory can participate in various operations, and efficient look-up table processing instructions; Driven by an 8MHz crystal, it can achieve a 125ns instruction cycle, and has abundant peripherals, interrupts, and I / O resources; it has 5 low-power modes, and in the low-power mode, the minimum power consumption of the system can be reduced to uA level , and all interrupts can wake up the system from low power consumption mode, the wake-up time is only 6us; it has a JTAG interface compatible with...

Embodiment 2

[0063] According to the selected chip and connection mode of embodiment 1, the workflow of microprocessor chip U1 processing 5.8GHz wireless data communication in main processor unit 1 is as follows Figure 7 As shown, it includes:

[0064] Step 1 After entering the IRQ interrupt handler, disable the IRQ interrupt enable.

[0065] Step 2 reads the value of each interrupt register, and judges the interrupt flag bit.

[0066] (1) If the wake-up interrupt flag is valid, clear the wake-up interrupt flag and go to step 3.

[0067] (2) If the sending completion interrupt flag is valid, clear the sending completion interrupt flag and go to step 3.

[0068] (3) If the reception completion interrupt flag is valid, then clear the reception completion interrupt flag, read the data in the RX_FIFO register in the radio frequency transceiver chip U2, and proceed to step 4.

[0069] (4) If the above-mentioned three interrupt flags are all invalid, then receive error, clear the receive err...

Embodiment 3

[0075] According to the selected chip and connection mode of embodiment 1, the workflow of microprocessor chip U1 realizing vehicle charging in main processor unit 1 is as follows Figure 8 As shown, it includes:

[0076] Step 1 clears the transaction completion flag, and proceeds to step 2.

[0077] step 2

[0078] (1) If the status of the CPU card is normal, go to step 3.

[0079] (2) If the status of the CPU card is abnormal, a message will be displayed to prompt the user to insert a valid CPU card, and return to step 2.

[0080] step 3

[0081] (1) Receive the RSU command, if the received RSU command has not timed out, go to step 4.

[0082] (2) If the received command times out, go to step 10.

[0083] Step 4 Interpret the received RSU command

[0084] (1) If it is a command to read system / vehicle / transaction record information, go to step 5.

[0085] (2) If it is to receive the transaction record command, then receive the transaction record data and go to step 7. ...

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Abstract

The invention discloses a vehicle-mounted unit of a 5.8 GHz electronic toll collection (ETC) system, comprising a primary processor unit, a 5.8 GHz wireless communication module, an IC (integrated circuit) card interactive module, an information displaying module, a power management module, a JTAG (joint test action group) debugging interface and an anti-dissembling module, wherein the 5.8 GHz wireless communication module is connected with the primary processor unit to realize DSRC (dedicated short range communications) short distance wireless communication which meets the Chinese national standards of the ETC; the IC card interactive module carries a double-interface CPU (central processing unit) card and can be compatible with an artificial semi-automatic charging way; and the power management module utilizes a solar battery to charge a lithium battery. The 5.8 GHz wireless communication module of the vehicle-mounted unit receives arousal signals and data which are transmitted from a RSU (rate-sensor unit) and sends to the primary processor unit; and the primary processor unit reads and writes the double-interface CPU card according to the received data and transmits vehicle / trade information to the RSU, so as to realize electronic toll collection.

Description

technical field [0001] The invention relates to a vehicle-mounted unit of a 5.8GHz electronic non-stop charging system. Background technique [0002] At present, all expressways in our country need to pay for passage, and the toll methods mainly include manual toll collection and manual semi-automatic toll collection. However, with the rapid construction of the national highway network and the continuous growth of traffic volume, the traditional highway toll collection methods can no longer meet the needs of highway toll collection management, and the problems caused by manual toll collection and manual semi-automatic toll collection are becoming more and more prominent. Mainly manifested in the following points: [0003] 1. Pass tickets are issued at the entrance, and pass tickets are collected at the exit. Vehicles need to stop twice, resulting in a decrease in road traffic efficiency. The traffic efficiency of toll stations has become a bottleneck restricting the improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07B15/06
Inventor 陈俊杰山宝银
Owner SOUTHEAST UNIV
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