Automobile and in-automobile communication and control device

Abstract

It is possible to provide a vehicle and an in-vehicle communication control device capable of performing control having preferable response even under an environment where notch attenuation and various noises are superposed in a wired communication by using a battery line. The in-vehicle communication control device includes: a controller for inputting operation amounts detected by respective sensors arranged in a plurality of operation devices arranged in a vehicle chamber for detecting operation amounts of the operation devices; a communication device connected to the controller and the battery line for outputting a control signal as a carrier of different frequency for each type of the operation devices to the battery line; a second communication device connected to the battery line and passing the carrier of the frequency band of each of the operation devices; and a second controller connected to the second communication device and controlling the control device corresponding to the operation devices.

Description

technical field [0001] The invention relates to an automobile using a battery wire as a communication line and a communication and control device in the automobile. Background technique [0002] In recent years, equipment using inverters in automobiles has become more and more popular. Large noise is generated due to the switching operation of the inverter, which is a device that controls a large current. Since these noises or electromagnetic waves are superimposed on the signal of the communication cable, the communication performance is degraded. In addition, when there is a branch point or a joint in the communication cable, or when the end is open, a sharp signal attenuation called notch attenuation may occur at a specific frequency due to reflection due to impedance mismatch. In addition, if the communication cable is long, signal attenuation will occur depending on the length. The attenuation rate increases as the frequency of the carrier increases. Such noise or s...

AI Technical Summary

Problems solved by technology

Since it is necessary to provide a plurality of communication lines, there is a problem that the weight of the communication lines increases and the weight of the vehicle body increases

[0007] The wiring device in a vehicle described in JP-A-11-266251 has a problem that it cannot be applied to current automobiles because the main cable is composed of a leaky cable, so it needs to replace the network used in the current automobile and relay the leaky cable.

In addition, there is a problem that the weight of the vehicle body increases due to newly laying leaky cables in the case of using the current network

In addition, the radio and TV are received in the vehicle, but the situation of being a noise source is not considered

[0008] In addition, the in-vehicle communication system described in JP-A-9-55986 has the problem that it cannot be applied to current vehicles because it needs to replace the network used in current vehicles with a new dedicated communication cable.

In addition, there is a problem of increased body weight due to the re-laying of cables with the current network

[0009] In addition, although the in-vehicle LAN system described in JP-A-2003-116187 and the vehicle communication system described in JP-A-2003-318925 use power line transmission, they do not consider preventing interference with radios and televisions. Signal attenuation is taken into account

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