Mai nā kaulahao hoʻokele robotic a hiki i nā kāʻei conveyor i nā hana kaulahao hoʻolako i ka hoʻoluhi ʻana i nā hale kiaʻi turbine makani, ʻo ka ʻike kūlana he hana koʻikoʻi ia i nā ʻano like ʻole. inductive, eddy current, capacitive, magnetostrictive, Hall effect, fiber optic, optical and ultrasonic.
Hāʻawi kēia FAQ i kahi hoʻolauna pōkole i nā ʻano like ʻole o ka ʻike kūlana, a laila e nānā i kahi ʻano ʻenehana i hiki i nā mea hoʻolālā ke koho mai ka wā e hoʻokō ai i kahi hopena ʻike kūlana.
ʻO nā mea ʻike kūlana potentiometric he mau mea kūʻē kūʻē e hoʻohui i kahi track resistive paʻa me kahi wiper i hoʻopili ʻia i ka mea nona ke kūlana e ʻike ʻia. ʻO ka neʻe ʻana o ka mea e neʻe i nā wipers ma ke ala. hiki hou.
Hoʻohana nā mea ʻike kūlana inductive i nā hoʻololi i nā waiwai o ke kahua magnetic i hoʻokomo ʻia i ka coil sensor. Ma muli o kā lākou hoʻolālā ʻana, hiki iā lākou ke ana i ka linear a i ʻole ka rotational position. ʻO ka wili mua a me nā ʻōwili lua ʻelua. Hoʻopili ʻia nā wili i ka moʻo, a ʻo ka pilina o ka lua o ka wili lua he 180° ma waho o ka manawa e pili ana i ka coil mua. Hiki ke hoʻoholo i ke kūlana pili o ka armature a me ka mea i hoʻopili ʻia. A rotating voltage differential transformer (RVDT) e hoʻohana i ka ʻenehana like e nānā i ka rotating position.LVDT a me RVDT sensors e hāʻawi i ka pololei, linearity, resolution and high sensitivity.
Hana ʻia nā ʻenekini kūlana o Eddy me nā mea conductive. ʻO nā au o Eddy i hoʻokomo ʻia i nā au i hana ʻia i loko o nā mea conductive i mua o ka hoʻololi ʻana o ke kahua magnetic. e nā au eddy, e pili ana i ka impedance o ka coil. I ka hoʻokokoke ʻana o ka mea i ka coil, e piʻi aʻe nā poho o ka eddy a me ka liʻiliʻi o ka oscillating voltage (Figure 2).
ʻO nā hāmeʻa Eddy o kēia manawa he ʻeleʻele, nā mea pili ʻole i hoʻohana pinepine ʻia e like me nā mea ʻike pili.
E like me ka inoa i hōʻike ʻia, capacitive position sensors e ana i nā loli i ka capacitance no ka hoʻoholo ʻana i ke kūlana o ka mea i ʻike ʻia. Hiki ke hoʻohana ʻia kēia mau ʻike pili ʻole no ke ana ʻana i ke kūlana linear a i ʻole rotational. Aia nā papa ʻelua i hoʻokaʻawale ʻia e kahi mea dielectric a hoʻohana i kekahi o nā ʻano ʻelua e ʻike i ke kūlana o kahi mea:
I mea e hoʻololi ai i ka dielectric mau, pili ka mea nona ke kūlana e ʻike ʻia i ka mea dielectric. I ka neʻe ʻana o ka mea dielectric, hoʻololi ka dielectric mau o ka capacitor ma muli o ka hui ʻana o ka wahi o ka mea dielectric a me ka dielectric mau o ka ea. Hoʻohana ʻia ka hoʻololi i ka capacitance e hoʻoholo i ke kūlana pili.
Hiki i nā mea ʻike capacitive ke ana i ka neʻe ʻana, ka mamao, ke kūlana a me ka mānoanoa o nā mea.
ʻO ka Magnetostriction kahi waiwai o nā mea ferromagnetic e hoʻololi ai ka mea i kona nui a i ʻole ke ʻano i ka wā e hoʻopili ʻia ai ke kahua magnetostrictive. uea e pili ana me ka axial magnetic field o ka mau loa (ke magnet i loko o ka piston cylinder, Figure 3a). ʻO ka pilina o ke kahua ma muli o ka wili ʻana (ka hopena Wiedemann), ka mea e hoʻopaʻa nei i ka uea, e hana ana i kahi puʻupuʻu acoustic e hoʻolaha ana ma ke alakaʻi nalu a ʻike ʻia e kahi mea ʻike ma ka hopena o ke alakaʻi nalu (Fig. o ka puʻupuʻu acoustic, ke kūlana pili o ke kūlana magnet a no laila hiki ke ana i ka mea (Fig. 3c).
ʻO nā meaʻike kūlana Magnetostrictive he mau mea hoʻopiliʻole i hoʻohanaʻia no kaʻikeʻana i ke kūlana laina. Hoʻokomo pinepineʻia nā Waveguides i loko o ke kila kila a iʻole nā ​​paipu alumini, e hiki ai ke hoʻohanaʻia kēia mau meaʻike i nā wahi lepo a pulu paha.
Ke hoʻokomo ʻia kahi conductor lahilahi a palahalaha i loko o ke kahua magnetic, hiki i nā mea e kahe ana ke kahe ma kekahi ʻaoʻao o ka conductor, e hana ana i kahi ʻokoʻa i kapa ʻia ʻo ka volta Hall. Volta. Ma ke ana ana i ka Volta Hall, hiki ke hoʻoholo i ke kūlana o kahi mea. Aia nā mea hoʻonaʻauao kūlana Hall-effect kūikawā e hiki ke hoʻoholo i ke kūlana ma nāʻanoʻekolu (Figure 4).
ʻElua mau ʻano kumu o ka fiber optic sensors. In intrinsic fiber optic sensors, the fiber is used as the sensing element. In external fiber optic sensors, fiber optics is combined with another sensor technology to relay the signal to remote electronics for processing. frequency domain reflectometer.Fiber optic sensors ua pale i ka electromagnetic interference, hiki ke hoʻolālā e hana ma ke kiʻekiʻe wela, a me ka non-conductive, no laila, hiki ke hoʻohana 'ia ma kahi kokoke i ke kaomi kiʻekiʻe a i ʻole nā ​​mea hiki ke ahi.
Hiki ke hoʻohana 'ia kekahi 'ike fiber-optic ma muli o ka fiber Bragg grating (FBG) 'enehana no ke ana kūlana. Ke hana nei ka FBG ma ke 'ano he kānana notch, e hō'ike ana i kahi hapa li'ili'i o ke kukui e kau ana ma ka hawewe Bragg (λB) ke ho'omālamalama 'ia e ke kukui ākea. ka neʻe ʻana, ka wikiwiki a me ka ukana.
ʻElua ʻano o nā ʻano ʻano o ka optical positions, i ʻike ʻia he optical encoders. I kekahi hihia, hoʻouna ʻia ke kukui i kahi mea hoʻokipa ma ka ʻaoʻao ʻē aʻe o ka sensor. Ma ke ʻano ʻelua, ʻike ʻia ka hōʻailona kukui i hoʻokuʻu ʻia e ka mea nānā ʻia a hoʻihoʻi ʻia i ke kumu kukui. Ma muli o ka hoʻolālā sensor, hoʻololi i nā waiwai māmā, e like me ka nalu, ka ikaika, ka pae a i ʻole polarization o kahi mea i loaʻa. rotary motion.E hāʻule kēia mau mea ʻike i ʻekolu mau ʻano nui; transmissive optical encoders, reflective optical encoders, a interferometric optical encoders.
Hoʻohana nā mea kani kani ultrasonic i nā transducers kristal piezoelectric e hoʻokuʻu i nā hawewe kani ultrasonic kiʻekiʻe. E ana ka mea ʻike i ke kani i ʻike ʻia. Hiki ke hoʻohana ʻia nā mea ʻike Ultrasonic e like me nā mea ʻike kokoke maʻalahi, a i ʻole nā ​​​​mea paʻakikī hiki ke hāʻawi i ka ʻike. ka leo ambient, infrared radiation a me electromagnetic interference.Examples of applications using ultrasonic position sensors include liquid level detection, high-speed counting of objects, robotic navigation systems, and automotive sensing. (Kiʻi 5).
Hiki i nā mea ʻike kūlana ke ana i ka laina pololei a pili paha, rotational a me ka angular motion o nā mea.
3D Magnetic Position Sensors, Allegro MicrosystemsAnalyzing and Enhancing the Security of Ultrasonic Sensors for Autonomous Vehicles, IEEE Internet of Things Journal Pehea e koho ai i kahi ʻike kūlana, Cambridge Integrated CircuitsPosition sensor type, Ixthus InstrumentationHe aha ka mea ʻike kūlana inductive?, Keyence He aha ke ʻano o ka sensor magnet?
E ʻimi i nā pilikia hou loa o ka Design World a me nā pilikia hope ma kahi ʻano maʻalahi e hoʻohana, kiʻekiʻe.
ʻO ka forum EE hoʻonā pilikia nui o ka honua e uhi ana i nā microcontrollers, DSP, networking, analog and digital design, RF, power electronics, PCB routing, a me nā mea hou aku.
Kuleana kope © 2022 WTWH Media LLC.ua mālama ʻia nā kuleana a pau. ʻAʻole hiki ke hana hou ʻia nā mea ma kēia pūnaewele, hoʻoili ʻia, hoʻoili ʻia, hūnā a hoʻohana ʻole ʻia me ka ʻole o ka ʻae ʻana i kākau mua ʻia e WTWH MediaPrivacy Policy |Advertising | E pili ana iā mākou