The subject matter herein generally relates to communication systems.
Generally, low frequency antenna is utilized in communication between a vehicle and an electronic key, especially in the position detection and the authentication. However, the size and the cost of the low frequency antenna is large.
Implementations of the present technology will now be described, by way of example only, with reference to the attached figures.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.
Several definitions that apply throughout this disclosure will now be presented.
The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like.
In one embodiment of the present disclosure, as shown in
When the challenge signal with vehicle identification number (Vehicle ID) is authenticated by the second microcontroller 203 of the portable communication device 200, an authentication response signal is transmitted from the portable communication device 200 to the base station circuit 101 of the vehicle 100 via the ultra high frequency antenna 202 of the portable communication device 200. When the authentication response signal is received and authenticated by the first microcontroller 105, a grant access signal is transmitted to the vehicle control unit (VCU) 102. Then, doors of the vehicle 100 are controlled by the vehicle control unit (VCU) 102 to be unlocked and an engine of the vehicle can be allowed to start. If the authentication response signal is not authenticated by the microcontroller 105, a deny access signal is transmitted to the vehicle control unit (VCU) 102. In the case of the deny access signal, the doors of the vehicle 100 remain locked and the engine is not allowed to start.
In one embodiment of the present disclosure, as shown in
In one embodiment of the present disclosure, as shown in
A position of the portable communication device 200 can be determined by the low frequency antennas 103, 106, 107, 108, and 109, and the first ultra high frequency antenna 104 of the vehicle 100 and by the second low frequency antenna 201 and the second ultra high frequency antenna 202 of the portable communication device 200.
In one embodiment of the present disclosure, the vehicle 100 further includes a third ultra high frequency antenna 110 arranged in the middle of the vehicle. The position detection of the portable communication device 200 can then be determined by the low frequency antennas 103, 106, 107, 108, and 109 and the ultra high frequency antennas 104 and 202 of the vehicle 100 and the second low frequency antenna 201 and the second ultra high frequency antenna 202 of the portable communication device 200.
The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of a vehicle communication system. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, especially in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.
Number | Date | Country | Kind |
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104111516 | Apr 2015 | TW | national |