Pressure sensor 296-8060 ya Caterpillar excavator part

Thermoelectric sensor

1. Thermoelectric zotsatira

Pamene ma conductor awiri achitsulo A ndi B okhala ndi katundu wosiyana alumikizidwa mu chipika chotsekedwa, ngati kutentha kwa mphambano sikuli kofanana (T0≠T), mphamvu ya electromotive idzapangidwa pakati pa ma conductor awiriwo, ndipo kuchuluka kwaposachedwa kudzakhalapo. lupu. Chodabwitsa ichi chimatchedwa thermoelectric effect.

2. Sensa yotsutsa kutentha

Zida zolimbana ndi kutentha nthawi zambiri zimakhala zitsulo zoyera, ndipo platinamu, mkuwa, faifi tambala, chitsulo ndi zina zambiri zimagwiritsidwa ntchito.

3. Thermistor sensor

Ma thermitors amapangidwa ndi ma semiconductors ndipo ali ndi zotsatirazi poyerekeza ndi zotenthetsera zitsulo:

1) kutentha kwakukulu kokwanira kukana ndi kukhudzidwa kwakukulu;

2) dongosolo losavuta, voliyumu yaying'ono ndi kuyeza kwa mfundo zosavuta;

3) High resistivity ndi oyenera muyeso wamphamvu;

4) Ubale pakati pa kukana ndi kusintha kwa kutentha sikuli kofanana;

5) kusakhazikika bwino.

5 kusintha kwapadera

Pali atatu omwe amagwiritsidwa ntchito kwambiri:

1. Malingana ndi kuchuluka kwa thupi la masensa, amatha kugawidwa kukhala masensa monga kusamuka, mphamvu, liwiro, kutentha, kutuluka ndi mpweya.

Malinga ndi mfundo ntchito masensa, iwo akhoza kugawidwa mu kukana, capacitance, inductance, voteji, Hall, photoelectric, grating, thermocouple ndi masensa ena.

2. Malinga ndi chikhalidwe cha chizindikiro chotulutsa cha sensa, chikhoza kugawidwa kukhala: masensa amtundu wosinthika omwe zotsatira zake ndizosintha ("1" ndi "0" kapena "pa" ndi "off"); Zotsatira zake ndi sensa ya analogi; Sensa ya digito yomwe kutulutsa kwake ndi pulse kapena code.

3.Sensors amagwiritsidwa ntchito poyesa kutentha ndi kuthamanga kwa madzi osiyanasiyana (monga kutentha kwa mpweya, kuthamanga kwa mpweya, kutentha kwa madzi ozizira ndi kuthamanga kwa jekeseni wa mafuta, etc.); Pali masensa omwe amagwiritsidwa ntchito kuti adziwe liwiro ndi malo a gawo lililonse (monga liwiro la galimoto, kutsegula kwa throttle, camshaft, crankshaft, ngodya ndi liwiro la kutumiza, malo a EGR, etc.); Palinso masensa oyezera kuchuluka kwa injini, kugogoda, kusokonekera kwamoto ndi okosijeni mu gasi wotulutsa mpweya; Sensa kuti mudziwe malo a mpando; Zomverera zoyezera liwiro la gudumu, kusiyana kwa kutalika kwa msewu ndi kuthamanga kwa matayala mu anti-lock braking system ndi chipangizo chowongolera kuyimitsidwa; Kuteteza airbag ya wokwera kutsogolo, osati masensa kugunda kwambiri ndi masensa mathamangitsidwe chofunika. Poyang'anizana ndi voliyumu yam'mbali ya wopanga, chikwama cha airbag komanso chikwama chowoneka bwino chapamutu, masensa ayenera kuwonjezeredwa. Monga ochita kafukufuku amagwiritsa ntchito ma anti-collision sensors (radar yoyambira kapena masensa ena osiyanasiyana) kuti aweruze ndikuwongolera kuthamanga kwagalimoto, kuthamanga kwanthawi yomweyo kwa gudumu lililonse ndi torque yofunikira, ma braking system yakhala gawo lofunikira pakuwongolera kukhazikika kwagalimoto. dongosolo.