CN213958064U - Supplementary transaction device for improving ETC transaction success rate - Google Patents
Supplementary transaction device for improving ETC transaction success rate Download PDFInfo
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- CN213958064U CN213958064U CN202023329706.2U CN202023329706U CN213958064U CN 213958064 U CN213958064 U CN 213958064U CN 202023329706 U CN202023329706 U CN 202023329706U CN 213958064 U CN213958064 U CN 213958064U
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Abstract
The utility model discloses a supplementary transaction device for improving ETC transaction success rate relates to highway charging device technical field. The device comprises a shell, wherein a vehicle detection device, an ETC transaction device and a power supply device are arranged in the shell, and the vehicle detection device comprises a coil sensor, an LC oscillation circuit, a signal amplification circuit, a vehicle inspection MCU and a vehicle inspection interface module; the ETC transaction device comprises a transaction MCU, a transaction interface module, a radio frequency processor, a transmitting power amplifier, a transmitting antenna, a receiving antenna and a receiving low-noise amplifier; the vehicle detection device is connected with the lane controller through the vehicle detection interface module and transmits vehicle detection information to the lane transaction system; the ETC transaction device is connected with the lane controller through the transaction interface module and transmits vehicle transaction information to the lane transaction system. The supplementary transaction device is installed at the side of an ETC lane toll island and used for improving the success rate of ETC transaction.
Description
Technical Field
The utility model relates to a highway toll device technical field especially relates to a supplementary transaction device for improving ETC transaction success rate.
Background
Along with the increase of ETC installation rate and rate of utilization, perfect ETC convenient service, ensure that highway toll station is unblocked high-efficiently, need improve the one-time pass rate in ETC lane. The current ETC transaction is accomplished by the RSU roadside recognition unit who installs above the lane, and the great part of transaction failure is because the RSU installation is higher, leads to with vehicle OBU reading and writing direction improper.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem how to provide a can improve the supplementary transaction device of ETC transaction success rate.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a supplementary transaction device for improving ETC transaction success rate which characterized in that: the vehicle detection device comprises a shell, a vehicle detection device, an ETC transaction device and a power supply device are arranged in the shell, the vehicle detection device comprises a coil sensor, a signal input end of the coil sensor is connected with an input end of an LC oscillating circuit, a signal output end of the LC oscillating circuit is connected with a signal input end of a vehicle inspection MCU through a signal amplifying circuit, and a vehicle inspection interface module is in bidirectional connection with the vehicle inspection MCU; the ETC transaction device comprises a transaction MCU, a transaction interface module is bidirectionally connected with the transaction MCU, a radio frequency processor is bidirectionally connected with the transaction MCU, a signal output end of the radio frequency processor is connected with a signal input end of a transmitting power amplifier, a signal output end of the transmitting power amplifier is connected with a transmitting antenna, a signal output end of a receiving antenna is connected with a signal input end of a receiving low-noise amplifier, a signal output end of the receiving low-noise amplifier is connected with a signal input end of the radio frequency processor, a PSAM card read-write module is bidirectionally connected with the transaction MCU, and the vehicle detection device is connected with a lane controller through a vehicle inspection interface module and transmits vehicle detection information to a lane transaction system; the ETC transaction device is connected with the lane controller through the transaction interface module and transmits vehicle transaction information to the lane transaction system; the power supply device is used for providing a working power supply for a module needing power supply in the supplementary transaction device.
The further technical scheme is as follows: the radio frequency processor U10 is connected with the transaction MCU through the SPI interface, the 7, 10, 21, 24 and 28 pins of the U10 are used as power supply pins, the connecting capacitors C61-C65 are used as power supply decoupling capacitors, the decoupling capacitors are uniformly distributed around the chip nearby, the 26 and 27 pins of the U10 are used as external crystal oscillator pins, the passive crystal Y3 and the matching capacitors C58 and C59 thereof are connected as the basic clock source of the U10, the 8 pin of the U10 is used as a wake-up pin and must be connected to a VDD power supply through the capacitor C55, the 9 pin of the U10 is connected to the ground through an external resistor R34 to provide a bias circuit for the U10, the 11 and 13 pins of the U10 are used for inhibiting signal noise through external filter capacitors C56 and C57, the 3 and 4 pins of the U10 are used as positive and negative radio frequency output pins, when a single-ended matching circuit is adopted, the 3 pin of the positive radio frequency output pin is used as a transmitting terminal, the 4 pin is used as a matching terminal and is connected to the ground through the external capacitor C54, the 5 pins of the U10 are used as radio frequency input pins;
the high-pass filtering matching circuit of the radio frequency output signals is composed of a capacitor C60, a capacitor C51 and resistors R35-R37, a 3-pin of a sending power amplifier U8 receives the filtered radio frequency signals, 8, 9, 18, 19 and 20-pin of U8 are used as power supply pins, connecting capacitors C45-C50 are used as power supply decoupling capacitors which are uniformly distributed around a chip nearby, 5-pin of U8 is used as reference voltage, 6 and 7-pin of U8 are used as two-bit electronic evaluation pins and are connected to 5-pin through external capacitors C52 and C53, 10-pin of U8 is used as an analog power supply detection pin and is connected to the ground through an external resistor R33, and 13-pin of U8 is used as power amplifier output and is connected to a sending antenna through an external resistor R32 and a capacitor C44 in a high-pass filtering mode;
the capacitor C40 is used as a high-pass filter capacitor of an input signal and is connected to a pin 5 of the receiving noise reduction amplifier U9, pins 1 and 6 of the U9 are used as power supply pins, connecting capacitors C42 and C43 are used as power supply decoupling capacitors, the decoupling capacitors are evenly distributed around the chip nearby, and a pin 2 of the U9 is used as a receiving amplifier input and is connected to a receiving antenna through the capacitor C41 in a high-pass filter mode.
The further technical scheme is as follows: the PSAM card read-write module comprises an ISO-7816 communication protocol module.
The further technical scheme is as follows: the transaction interface module is an RS485 serial port module and is used for transmitting signals in a long distance.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: supplementary transaction device installs in ETC lane charging island roadside, reduces the distance of ETC transaction device and vehicle, adopts small-size omnidirectional RSU antenna, effectively solves directional antenna and leaks the transaction problem, improves the success rate of ETC transaction. The vehicle detection device in the transaction device adopts an annular ground sensing coil and a digital intelligent vehicle detector with a direction logic detection function, and is used for detecting the passing of a vehicle. The device can be set with various working modes, coil frequency and sensitivity, has excellent performance, sensitive detection, high reliability and stable operation, and is widely applied to the detection of vehicles on the highway. The ETC transaction device adopts a small omnidirectional RSU antenna, and is small in size and convenient to install; the omnidirectional antenna can effectively solve the problem of missed transaction of the directional antenna, and the transaction success rate of the ETC vehicle can be effectively improved through the secondary supplementary transaction of the ETC transaction device, so that the passing rate of the ETC lane is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;
fig. 2 is a schematic block circuit diagram of an apparatus according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a radio frequency processor, a transmit power amplifier, and a receive low noise amplifier in an apparatus according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of an encryption module and a crystal oscillator in the apparatus according to the embodiment of the present invention;
wherein: 1. a housing; 2. a vehicle detection device; 3. an ETC transaction device; 4. and a power supply device.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1-2, the embodiment of the utility model discloses a supplementary transaction device for improving ETC transaction success rate, including casing 1, be provided with vehicle detection device 2, ETC transaction device 3 and power supply unit 4 in the casing 1. The vehicle detection device 2 comprises a coil sensor, a signal input end of the coil sensor is connected with an input end of an LC oscillation circuit, a signal output end of the LC oscillation circuit is connected with a signal input end of a vehicle inspection MCU through a signal amplification circuit, and a vehicle inspection interface module is bidirectionally connected with the vehicle inspection MCU; the ETC transaction device 3 comprises a transaction MCU, a transaction interface module is bidirectionally connected with the transaction MCU, a radio frequency processor is bidirectionally connected with the transaction MCU, a signal output end of the radio frequency processor is connected with a signal input end of a transmitting power amplifier, a signal output end of the transmitting power amplifier is connected with a transmitting antenna, a signal output end of a receiving antenna is connected with a signal input end of a receiving low-noise amplifier, a signal output end of the receiving low-noise amplifier is connected with a signal input end of the radio frequency processor, a PSAM card read-write module is bidirectionally connected with the transaction MCU, and the vehicle detection device is connected with a lane controller through a vehicle inspection interface module and transmits vehicle detection information to a lane transaction system; the ETC transaction device is connected with the lane controller through the transaction interface module and transmits vehicle transaction information to the lane transaction system; the power supply device 4 is used for providing a working power supply for the modules needing power supply in the supplementary transaction device.
The vehicle detection device in the transaction device adopts an annular ground sensing coil and a digital intelligent vehicle detector with a direction logic detection function, and is used for detecting the passing of a vehicle. The device can be set with various working modes, coil frequency and sensitivity, has excellent performance, sensitive detection, high reliability and stable operation, and is widely applied to the detection of vehicles on the highway. The ETC transaction device adopts a small omnidirectional RSU antenna, and is small in size and convenient to install; the omnidirectional antenna can effectively solve the problem of missed transaction of the directional antenna, and the transaction success rate of the ETC vehicle can be effectively improved through the secondary supplementary transaction of the ETC transaction device, so that the passing rate of the ETC lane is improved.
The device is installed behind a detection area of an ETC toll lane RSU roadside identification unit, when a vehicle drives into an ETC transaction area, an ETC toll system firstly carries out read-write transaction on an OBU installed on the vehicle through the RSU roadside identification unit, and if the transaction is successful, a driver lifts off to release, and the vehicle can pass through quickly; if the transaction is unsuccessful, the vehicle enters a detection area of the supplementary transaction equipment and is successfully captured by the vehicle detection device 2, the ETC lane charging system disconnects a communication channel with the RSU roadside identification unit, opens the communication channel with the supplementary transaction equipment, and performs read-write transaction on an OBU (on-board unit) installed on the vehicle through the ETC transaction device 3 on the supplementary transaction equipment, so that the success rate of the ETC transaction can be greatly improved, the vehicle passing efficiency is improved, and the purpose of rapid charging without stopping is achieved by adjusting the redundant mode of different angles and distances of the antenna of the transaction equipment.
As shown in fig. 3, the rf processor U10 is connected to the transaction MCU through the SPI interface, the pins 7, 10, 21, 24 and 28 of the U10 are used as power supply pins, the connection capacitors C61-C65 are used as power decoupling capacitors, the decoupling capacitors are uniformly distributed around the chip nearby, the pins 26 and 27 of the U10 are used as external crystal oscillator pins, the passive crystal Y3 and its matching capacitor C58 and capacitor C59 are connected as the basic clock source of the U10, the pin 8 of the U10 is used as a wake-up pin and must be connected to VDD through the capacitor C55, the pin 9 of the U10 is connected to ground through the external resistor R34 to provide a bias circuit for the U10, the pins 11 and 13 of the U10 are connected to the external filter capacitors C56 and C57 to suppress signal noise, the pins 3 and 4 of the U10 are used as rf output positive and negative pins, when the single-ended matching circuit is used, the rf output positive pin 3 is used as a transmit terminal, the 4 is connected to the external capacitor C54, the 5 pins of the U10 are used as radio frequency input pins;
the high-pass filtering matching circuit of the radio frequency output signals is composed of a capacitor C60, a capacitor C51 and resistors R35-R37, a 3-pin of a sending power amplifier U8 receives the filtered radio frequency signals, 8, 9, 18, 19 and 20-pin of U8 are used as power supply pins, connecting capacitors C45-C50 are used as power supply decoupling capacitors which are uniformly distributed around a chip nearby, 5-pin of U8 is used as reference voltage, 6 and 7-pin of U8 are used as two-bit electronic evaluation pins and are connected to 5-pin through external capacitors C52 and C53, 10-pin of U8 is used as an analog power supply detection pin and is connected to the ground through an external resistor R33, and 13-pin of U8 is used as power amplifier output and is connected to a sending antenna through an external resistor R32 and a capacitor C44 in a high-pass filtering mode;
the capacitor C40 is used as a high-pass filter capacitor of an input signal and is connected to a pin 5 of the receiving noise reduction amplifier U9, pins 1 and 6 of the U9 are used as power supply pins, connecting capacitors C42 and C43 are used as power supply decoupling capacitors, the decoupling capacitors are evenly distributed around the chip nearby, and a pin 2 of the U9 is used as a receiving amplifier input and is connected to a receiving antenna through the capacitor C41 in a high-pass filter mode.
The transmitting end is connected with a 5GHz and 26dBm power amplifier, the power amplifier comprises a power supply detector which is used for closed-loop monitoring and output power control, input matching, interstage matching and output matching are integrated, a 15dB dynamic range and a 3.8GHz notch filter are provided, the integration level is high, and a peripheral circuit is simple.
The receiving antenna is connected with the low-noise amplifier, other noise waves in the received signal are filtered, a pure received signal is obtained, the antenna inducts weak current to be amplified, the requirement of a post-stage circuit on signal amplitude is met, and the signal is coupled and sent to the processor through the capacitor to be demodulated with the local oscillation signal.
The radio frequency processor adopts a CMOS fully integrated chip with low power consumption and high performance, integrates complete radio frequency transceiving, ASK demodulation and CRC functions, can simultaneously receive multi-channel information and can effectively avoid the interference of adjacent channels.
The PSAM reader includes an encryption module that uses a SAM encryption module, as shown in fig. 4. The encryption module completely accords with an international smart card standard ISO-7816 communication protocol, the communication baud rate supports self-adaptation, and the communication requirements of PSAM cards of various manufacturers in the domestic market are effectively met. The PSAM card supports two encryption algorithms of SM4 and 3DES, and meets the existing requirements.
Claims (4)
1. A supplementary transaction device for improving ETC transaction success rate which characterized in that: the vehicle detection device comprises a shell (1), wherein a vehicle detection device (2), an ETC transaction device (3) and a power supply device (4) are arranged in the shell (1), the vehicle detection device (2) comprises a coil sensor, the signal input end of the coil sensor is connected with the input end of an LC oscillating circuit, the signal output end of the LC oscillating circuit is connected with the signal input end of a vehicle inspection MCU through a signal amplification circuit, and a vehicle inspection interface module is in bidirectional connection with the vehicle inspection MCU; the ETC transaction device (3) comprises a transaction MCU, a transaction interface module is bidirectionally connected with the transaction MCU, a radio frequency processor is bidirectionally connected with the transaction MCU, a signal output end of the radio frequency processor is connected with a signal input end of a transmitting power amplifier, a signal output end of the transmitting power amplifier is connected with a transmitting antenna, a signal output end of a receiving antenna is connected with a signal input end of a receiving low-noise amplifier, a signal output end of the receiving low-noise amplifier is connected with a signal input end of the radio frequency processor, a PSAM card read-write module is bidirectionally connected with the transaction MCU, and the vehicle detection device is connected with a lane controller through a vehicle inspection interface module and transmits vehicle detection information to a lane transaction system; the ETC transaction device is connected with the lane controller through the transaction interface module and transmits vehicle transaction information to the lane transaction system; the power supply device (4) is used for providing working power supply for the modules needing power supply in the supplementary transaction device.
2. A supplementary transaction apparatus for improving the success rate of ETC transactions according to claim 1, wherein: the radio frequency processor U10 is connected with the transaction MCU through the SPI interface, the 7, 10, 21, 24 and 28 pins of the U10 are used as power supply pins, the connecting capacitors C61-C65 are used as power supply decoupling capacitors, the decoupling capacitors are uniformly distributed around the chip nearby, the 26 and 27 pins of the U10 are used as external crystal oscillator pins, the passive crystal Y3 and the matching capacitors C58 and C59 thereof are connected as the basic clock source of the U10, the 8 pin of the U10 is used as a wake-up pin and must be connected to a VDD power supply through the capacitor C55, the 9 pin of the U10 is connected to the ground through an external resistor R34 to provide a bias circuit for the U10, the 11 and 13 pins of the U10 are used for inhibiting signal noise through external filter capacitors C56 and C57, the 3 and 4 pins of the U10 are used as positive and negative radio frequency output pins, when a single-ended matching circuit is adopted, the 3 pin of the positive radio frequency output pin is used as a transmitting terminal, the 4 pin is used as a matching terminal and is connected to the ground through the external capacitor C54, the 5 pins of the U10 are used as radio frequency input pins;
the high-pass filtering matching circuit of the radio frequency output signals is composed of a capacitor C60, a capacitor C51 and resistors R35-R37, a 3-pin of a sending power amplifier U8 receives the filtered radio frequency signals, 8, 9, 18, 19 and 20-pin of U8 are used as power supply pins, connecting capacitors C45-C50 are used as power supply decoupling capacitors which are uniformly distributed around a chip nearby, 5-pin of U8 is used as reference voltage, 6 and 7-pin of U8 are used as two-bit electronic evaluation pins and are connected to 5-pin through external capacitors C52 and C53, 10-pin of U8 is used as an analog power supply detection pin and is connected to the ground through an external resistor R33, and 13-pin of U8 is used as power amplifier output and is connected to a sending antenna through an external resistor R32 and a capacitor C44 in a high-pass filtering mode;
the capacitor C40 is used as a high-pass filter capacitor of an input signal and is connected to a pin 5 of the receiving noise reduction amplifier U9, pins 1 and 6 of the U9 are used as power supply pins, connecting capacitors C42 and C43 are used as power supply decoupling capacitors, the decoupling capacitors are evenly distributed around the chip nearby, and a pin 2 of the U9 is used as a receiving amplifier input and is connected to a receiving antenna through the capacitor C41 in a high-pass filter mode.
3. A supplementary transaction apparatus for improving the success rate of ETC transactions according to claim 1, wherein: the PSAM card read-write module comprises an ISO-7816 communication protocol module.
4. A supplementary transaction apparatus for improving the success rate of ETC transactions according to claim 1, wherein: the transaction interface module is an RS485 serial port module and is used for transmitting signals in a long distance.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116094536A (en) * | 2023-01-13 | 2023-05-09 | 南京燧锐科技有限公司 | Multi-channel radio frequency chip structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094536A (en) * | 2023-01-13 | 2023-05-09 | 南京燧锐科技有限公司 | Multi-channel radio frequency chip structure |
| CN116094536B (en) * | 2023-01-13 | 2024-03-12 | 南京燧锐科技有限公司 | Multi-channel radio frequency chip structure |
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