To provide a temperature detection device or the like capable of detecting a temperature with high accuracy in a wider temperature range.SOLUTION: A temperature detection device includes a detection unit including a first resistor ERa and a second resistor ERb with different relations between temperature change and change of an electric resistance value, switches SW1, SW2 provided so as to be able to perform switching operation to connect to one of a first circuit including a wire connected to the first resistor ERa and a second circuit including a wire connected to the second resistor ERb, a power source circuit 91 generating an electric signal by applying a voltage to the wire connected to the one, and a control unit 80 that detects a temperature of the detection unit on the basis of intensity of the electric signal. The control unit 80 operates the switches SW1, SW2 periodically so as to obtain both the electric signal generated in the first circuit and the electric signal generated in the second circuit.SELECTED DRAWING: Figure 7

    【課題】より広い温度域で高精度な温度検出を行える温度検出装置等を提供する。【解決手段】温度検出装置は、温度変化と電気抵抗値の変化との関係がそれぞれ異なる第1抵抗素子ERaと第2抵抗素子ERbとが設けられた検出部と、第1抵抗素子ERaが接続された配線を含む第1回路又は第2抵抗素子ERbが接続された配線を含む第2回路の一方と接続するよう切替動作可能に設けられたスイッチSW1,SW2と、当該一方が接続された配線に電圧を印加して電気的信号を生じさせる電源回路91と、当該電気的信号の強さに基づいて検出部の温度を検出する制御部80と、を備える。制御部80は、第1回路で生じた電気的信号と第2回路で生じた電気的信号の両方を得られるよう周期的にスイッチSW1,SW2を動作させる。【選択図】図7


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    Title :

    TEMPERATURE DETECTION DEVICE, DISPLAY DEVICE, AND HEAD-UP DISPLAY


    Additional title:

    温度検出装置、表示装置及びヘッドアップディスプレイ


    Contributors:

    Publication date :

    2022-04-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01K MEASURING TEMPERATURE , Messen der Temperatur / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS



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