To detect a failure in a filter circuit which is used as a PoDL filter.SOLUTION: A signal transmission device 2 includes: a communication unit 21 which is connected to an electronic apparatus 1 by a differential wiring 5 constituted by a pair of wires to perform communication by the differential transmission with the electronic apparatus 1 through the differential wiring 5; and a signal processing unit 27 which executes signal processing related to the communication. The communication unit 21 can receive communication signals, transmitted from the electronic apparatus 1 at a plurality of signal transmission speeds which at least include a signal transmission speed T1 and a signal transmission speed T2 lower than the signal transmission speed T1, through the differential wiring 5. The communication unit 21 measures by a reception processing unit 210 the amplitude of each communication signal received from the electronic apparatus 1 at the signal transmission speed T2. The signal processing unit 27 detects, by a filter state determination unit 270, a short-circuit failure in each filter circuit 13, 23, based on the amplitude measured by the communication unit 21.SELECTED DRAWING: Figure 1

    【課題】PoDLフィルタとして用いられるフィルタ回路の故障を検知する。【解決手段】信号伝送装置2は、一対の電線からなる差動配線5により電子装置1と接続されており、差動配線5を介して電子装置1との間で差動伝送による通信を行う通信部21と、通信に関する信号処理を実施する信号処理部27とを備える。通信部21は、信号伝送速度T1と、信号伝送速度T1よりも低速の信号伝送速度T2と、を少なくとも含む複数の信号伝送速度で電子装置1からそれぞれ送信される通信信号を、差動配線5を介して受信可能である。通信部21は、受信処理部210により、信号伝送速度T2で電子装置1から受信した通信信号の振幅を測定する。信号処理部27は、フィルタ状態判定部270により、通信部21で測定された振幅に基づいてフィルタ回路13,23のショート故障を検知する。【選択図】図1


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    Title :

    DEVICE AND SYSTEM FOR SIGNAL TRANSMISSION, AND INFORMATION PROVISION METHOD


    Additional title:

    信号伝送装置、信号伝送システム、情報提供方法


    Contributors:

    Publication date :

    2022-05-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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