传感器 的分类目前尚无统一规定,传感器本身又种类繁多,原理各异,检测对象五花八门,给分类工作带来一定困难,通常传感器按下列原则进行分类。
1.按被检测量分类
按被检测量分类,可分为物理量传感器,化学量传感器,生物量传感器。在各类传感器中可分为若干族,每一族中又可分为若干组。其分类体系如表1.1所示(表略)。
2.按物理原理分类
这种分类方法是以传感器的物理原理作为分类依据。可分为压阻式、压电式、电感式、电容式、应变式、霍尔式……;这种分类方法有利于传感器专业工作者从原理和设计上作归纳性的分析和研究。
3.按能量的传递方式分类
按能量的传递方式分类,传感器可分为有源传感器和无源传感器两大类。
有源传感器将非电量转换为电量。
无源传感器本身并不是一个换能器,被测非电量仅对传感器中的能量起控制或调节作用,所以它必须具有辅助能源——电源。
4.按传感器的工作机理分类
按传感器的工作机理分类,可分为结构型和物性型两大类。
结构型传感器是利用物理学中场的定律和运动定律等构成的。物理学中的定律一般是以方程式给出。对于传感器来说,这些方程式也就是许多传感器在工作时的数学模型。这类传感器特点是传感器的性能与它的结构材料没有多大关系。以差动变压器为例,无论使用坡莫合金或铁氧体做铁芯,还是使用铜线或其它导线做绕组,都是作为差动变压器而工作。
物性型传感器是利用物质法则构成的。物质法则是表示物质某种客观性质的法则。这种法则大多数以物质本身的常数形式给出。这些常数的大小,决定了传感器的主要性能。因此,物性型传感器的性能随材料的不同而异。如所有的半导体传感器,以及所有利用各种环境变化而引起的金属、半导体、陶瓷、合金等性能变化的传感器都是物性型传感器。
另外,根据传感器输出是模拟信号还是数字信号,可分为模拟传感器和数字传感器;根据转换过程可逆与否,可分为双向传感器和单向传感器等等。
ArcSecond Receivers and Misc. Parts 3D-Inbligence Spa
Products TE-182RF 模块
Unit Instruments Model 1600 Mass Flow Controller 500cc
Leica / Bausch & Lomb StereoZoom 7 Microscope with Adju
Hewlett Packard 6641A 8VDC/20A DC Power Supply HP
Optronics Engineering 60794 DEI-750 Color Control Unit
Tektronix TDS 410A 2F Two Channel Digital Oscilloscope
PCT Megasonic Hyperclean Generator 6000 C/B No Heat
Vintage Teac A-2300SX Reel To Reel Recorder Player & Pa
Bilz BiAir Isolation Pods Leveling Controller Regulator
Desco A50070 Surface Resistance Meter Megohm Test Kit
PGT Princeton 32LD Dewar for Germanium Detector w/ Cap
Harshaw NH-85 12-Slot NIM BIN SA20X40X10S Chassis w/ PS AEC-320-5A
Hewlett Packard / Agilent HP 16500B Analyzer With Two 1
Olympus C-8080 8MP Digital Underwater Enclosure Ikelit
Reliance Electric AC VS Drive GS-2000 200/230 VAC 3 Pha
Valco VICI E6 Multib Actuator & 6-Port GC Valve
Swench 750 Impact Wrench & Assorted Sockets, Proto, Sna
Allen Bradley SLC-500 1746-P2 Seven Slot With 1746IA16,
Axsys Technologies Speedring System 8000
AVL North America Process Controller UWS3433-273-2-PC w
APC SYPM4KU 4kVA Power Module for Symmetra RM 8-12 kVA
Edwards ETC 300 Turbomolecular Turbo Vacuum Pump Contro
Nub Data Portable Detector Shielding - Lead - for
Radiall Optiall F 780 223 000 Fiber Optic Kit
VX Optronics Star Cam X2Z SA20X40X10S Auto-Collimated Stereographic...
Semix E0R05-6074 模块
Ortec 401A 12-Slot NIM BIN Chassis w/ PS AEC-320-5
BenQ Model PB220 LCD Projector - Low Lamp Hours
Gilibrator with D800285 Bubble Generator, C-800274 Ther
PMT Detector / Calibrator? Photomultiplier Detector Ha
Herrmann Dialog 2012 Sonic Welder Controller
HP / Agilent 75000 Series B VXI Bus Mainframe With 1326
ICS 15013-20 Backplane & Power Distribution Board Indus
Keithley 642 Electrometer With Remote Head & Cable
Pulnix TM-7EX CCD W/ Fujinon HF9A-2 1:1.4/9 Lens Fuji
AMI Advanced Medical Instruments SA20X40X10S Non-Invasive Blood Pre
EG&G Geometrics G-822A Counter
SBC P4 2.8GHz SAGP-845MEV 1GB DDR w/ PXAGP-13S3-R21 Bac
EG&G Ortec 456 NIM BIN Plun-in High Voltage Power Suppl
Controlotron Uniflow Transit-time Flowmeter Accessory K
Valco VICI E16 16-Port Multib Actuator With Remo
SBC Rocky-3702EV Pentium III 700mhz 512MB Industrial Si
Kepco RA 63 Rack & 2x HSP 12-84M Power Supply 12VDC 84A
H2Scan Hydrogen Sensor 14060010 + H2 Scan Monitor 11310
Morehouse Model 5 Ring Force Gauge 10k lb Capacity
Helios GmbH 2500w 208 Volt Heater SA20X40X10S Element Drum Heater U
GE DVMRe-16CT72 模块
UNUSED Perkin Elmer High Vacuum Pump HOT / COLD Probe ?
Photonetics Metricor 2000 Conditioner SPL Fiber Optic
Contamination Survey Meter Technical Associates TBM-3 A
Technical Associates TBM-3 Alpha Beta & Gamma Geiger Co
Rainin HPXL Solvent Delivery System
Ludlum 2A Radiation Survey Meter Geiger Counter w/ Bad
Tektronix 2445 150 Mhz Oscilloscope 4 SA20X40X10S Channel & P6131 1
Industrial Computer Source Backplane ICS 15013-20 & Pow
Ortec 425A Delay NIM BIN Module
Westinghouse MOR Relay 10% Unbalanced Phase Module PUM
Schneider-Kreuznach Symmar-S f5.6 / 210 mm, Copal No.
Galil Motion Control Legacy Series DMC-1020 2 Axis Cont
VG Micromass Mains Distribution System MS741, M766, M41
EG&G / Ortec Geometrics G-822A Counter
Syntron Vibratory Parts Feeder SA20X40X10S LP01C And Speed Regulato
Shel Labs WS27 Heated Oscillating Laboratory Bath 27l
Vaisala HMP238 Humidity & Temperature Transmiter With P
ProMinent Gamma /L Diaphragm Metering Pump
Valco VICI E16 16-Port Multib Actuator VICI E16
Pulnix TM-7EX 1/2" Machine Vision CCD Camera UNUSED
Flow Dynamics Sonic Venturi SA20X40X10S 350 SCFM FDSVSFL64-1 Stainl
Humphrey VG24-0616-1 模块
Matrox Meteor Meteor2-DIG/4/R PCI Frame Grabber Card
Leitch SPG-2602N Frame Chassis Modules Video Sync Pulse