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Vehicle frequency hopping communication system

A communication system and frequency hopping technology, applied in the field of vehicle frequency hopping communication system, can solve the problems of low anti-interference ability, reduce the number of vehicle receiving devices, etc., and achieve the effects of improving communication success rate, avoiding communication failure, and improving spectrum utilization.

Inactive Publication Date: 2013-12-18
JIANGSU ANZHIXIN ELECTRONICS TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low anti-interference capability of traditional PEPS and TPMS systems, the purpose of the present invention is to provide a vehicle frequency hopping communication system, which can share the same vehicle receiving module, while taking into account the anti-interference capability of high-frequency signals, reducing the Number of receivers

Method used

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  • Vehicle frequency hopping communication system
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Embodiment Construction

[0015] by figure 1 Known, is a schematic diagram of the known PEPS and TPMS communication. The same car equipped with PEPS and TPMS divides the frequency bands of the two systems. If PEPS uses the 315MHz frequency band, TPMS uses the 434MHz frequency band, and if PEPS uses the 434MHz frequency band, TPMS uses the 315MHz frequency band and uses different signal receiving devices to receive signals.

[0016] by figure 2 Known is a schematic diagram of the structure of the present invention. A vehicle frequency hopping communication system includes a vehicle-mounted receiving device and a signal transmitting device. The signal transmitting device includes a high-frequency transmitter and a microcontroller; the vehicle-mounted receiving device includes a signal receiving module and a signal processing module; the signal receiving device The module signal receiving module can receive and process the first radio frequency signal and the second radio frequency signal at the same time, ...

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Abstract

The invention discloses a vehicle frequency hopping communication system. The vehicle frequency hopping communication system comprises a signal emitting device and a vehicle-mounted receiving device, wherein the signal emitting device comprises a high-frequency emitter and a microcontroller, and the vehicle-mounted receiving device comprises a signal receiving module and a signal processing module. The vehicle frequency hopping communication system is characterized in that the emitting frequency of a first radio frequency signal and the emitting frequency of a second radio frequency signal differ, and the difference is within the receiving frequency band width range of the vehicle-mounted receiving module. Because communications are carried out by a PEPS and a TPMS through the first radio frequency signal and the second radio frequency signal which have the different frequency points respectively, the same vehicle-mounted receiving module can be shared, and communication failure problems caused by same-frequency interference can also be avoided to a great extent. The vehicle frequency hopping communication system improves frequency spectrum utilization ratio, reduces the number of vehicle-mounted receiving devices, and improves communication success rate.

Description

Technical field [0001] The invention relates to the technical fields of PEPS (Passive Keyless Entry and Keyless Start System) (PKE) and TPMS (Tire Pressure Monitoring System, tire pressure detection system). Background technique [0002] Frequency hopping (FH: Frequency hopping), referred to as frequency hopping, the so-called frequency hopping technology, refers to the use of pseudo-random code sequence for frequency shift keying, so that the carrier frequency is constantly hopping and spreading a method of spectrum, is currently domestic and international A relatively mature technology. Mainly used in military communications, it can effectively avoid interference and exert communication efficiency. [0003] The existing PEPS and TPMS have been widely used in various vehicles. The two systems jointly use two high-frequency transmission frequencies of 315MHz and 434MHz, with a range of up to 50 meters to 100 meters. Therefore, car remote control technology (RKE: Remote Keyless En...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/715B60C23/04B60R25/10
Inventor 宋豪杰林承德查建刚
Owner JIANGSU ANZHIXIN ELECTRONICS TECH
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