AccuStar Electronic Clinometer

Transcription

1 EH-2.pdf EH-2 Single Axis ±6 Range DESCRIPTION The AccuStar Electronic Clinometer is an extremely accurate angle measurement device. This compact and rugged sensor is ideal where space is critical and environmental conditions are serious design concerns. The heart of the system is a patented, capacitance-based sensor with no moving parts. When rotated about its sensitive axis, this unique sensor provides an exceedingly linear variation in capacitance, which is electronically converted into angular data. The sensor and low-power CMOS electronics are encased in a rugged plastic housing ready to install as a system component or as a stand-alone device. Designed for easy integration, with a choice of analog, ratiometric, digital or serial models, the clinometer produces an output signal corresponding to direction and magnitude of angular displacement. performance specifications CE certified Total Range Linear Range Threshold Linearity Null to to to 6 Null Repeatability Cross Axis Error Time Constant Freq. Response (-3db) RF Susceptibility Just 2" in diameter Rugged plastic housing Extremely accurate Weighs only 2 oz. APPLICATIONS Wheel alignment Construction equipment ±6 ±45. ±. ±% Monotonic.5 <% up to 45.3 sec.5 Hz <±2 Antenna positioning Robotics Lucas Way Hampton, VA USA

2 EH-2.pdf EH-2 design concept The unique design is based on a common capacitor plate sandwiched between sensor housing halves. The plate has been etched to form two variable capacitors. The assembled sensor is half filled with a dielectric liquid and inert gas. Rotation of the sensor produces a linear change in capacitance resulting in a corresponding output signal. o rd e r i n g i n f o r m a t i o n Model Number Description Ratiometric Analog Digital Serial dimensions Ø.52 (3.86) Ø.52 (3.86) UP Ø2.3 (5.562).52 x.548 (3.86 x 4.833) UP Ø.95 (49.555) (65.93) (57.759).52 x.548 (3.86 x 4.833) Mount.2 (3.48) (65.93).25 (3.75) (57.759) Mount Lucas Way Hampton, VA USA

3 EH-2.pdf EH-2 Ratiometric with 9 VDC supply Ratiometric 6.3 The Ratiometric clinometer is a signal conditioned sensor that has been designed to operate like a potentiometer. This is a three wire device: power; power ground; and signal. The signal is referenced to power ground. A regulated power supply is required since the output is supply dependent. The midscale output, zero degrees, is /2 the supply voltage while the scale factor is also supply dependent. With its low power consumption,.5 ma, this device is ideal for battery supplied applications. The Ratiometric clinometer was designed with EMI and ESD (Volts) Angle (Degrees) Ratiometric I/O Block Diagram Low power consumption + 3 wire operation Ratiometric Differential Ratiometric Electrical Specifications Supply Nominal +9 VDC Range (regulated) +5 to +5 VDC.5mA Nominal (@9VDC) 3mV/degree ±% Load Resistance (min.) khms Level ( ) /2Vcc Electrical Connections ground Reg. +5 to +5 VDC Yellow Signal output (reference to power ground) Lucas Way Hampton, VA USA

4 EH-2.pdf EH-2 analog output Analog 3.6 The Analog clinometer is a signal conditioned sensor which has been designed for dc voltage, bipolar operation. The clinometer requires a bipolar supply of ±8 to ±5 VDC and delivers an output of ±3.6 VDC. This device is internally regulated for various applications. The output scale is fixed at a nominal 6mV per degree not dependent on the supply voltage. The Analog clinometer has full EMI and ESD 2.4 O u tp u t ( V o l ts ) Angle (Degrees) Internally regulated Bipolar input/output analog + Analog - analog electrical specifications Differential Buffer Supply Nominal ±2 VDC Range (regulated) ±8 to ±5 VDC 5mA/supply 6mV/degree ±% Load Resistance (min.) khms Level ( ) VDC -VDC electrical connections ground +8 to +5 VDC Gray -8 to -5 VDC Blue Signal output Regulator (reference to power ground) Lucas Way Hampton, VA USA

5 EH-2.pdf EH-2 Serial Data The Serial clinometer is a signal conditioned sensor which resolves the angle of tilt to 6 bits of information plus a polarity bit. This device was designed to transmit data to a microcontroller or to an I/O card of a PC through a three wire interface which will work at both TTL and CMOS logic levels. Complete handshaking is used to eliminate timing and transmission problems. The standard version operates on a +5 VDC regulated power supply while an internally regulated version is available. The Serial clinometer was designed with EMI and ESD MSB LSB 6 Bits Example = 5 Vdc Contact factory for more details. Microcontroller compatible Serial I/O Block Diagram Ideal for noisy environments 6 MHz Clock Serial Electrical Specifications Micro Processor Controller Event Supply Range +5 VDC, ±5% 5 ma counts/degree ±% CMOS/TTL Level ( ) counts Binary Range 6 bits + bit polarity (serial) Difference Pulse Generator electrical connections ground +5 VDC Yellow Data White Request/Hold Gray Ready/Wait Lucas Way Hampton, VA USA Vdc

6 EH-2.pdf EH-2 Digital Pulse Width to Hz max VIH VIL Trigger The Digital Pulse Width clinometer is a signal conditioned sensor which resolves the angle of tilt to pulses, the length of which are directly proportional to the angle. When a trigger pulse is received on trigger or trigger 2 a pulse is sent out the corresponding PW or PW2 line. Comparing the length of the two pulses determines the angle of the sensor. Triggering both lines together allows the user to read Delta PW which is the difference of PW and PW2. The polarity line will tell the user if the sensor is tilted clockwise or counterclockwise. The Digital Pulse Width clinometer was designed with EMI and ESD.5 to 5. ms PW.5 to 5. ms PW2 to 3.6 ms PW (min) 4.95V (max).5v updated on falling edge of PW high CW, low CCW VIH (max) 5.3V VIH (min) 3.V VIL (max).8v Internally regulated output is TTL compatible. Each output can drive one low power Schottky or multiple CMOS devices. Pulse width output Digital I/O Block Diagram data electrical specifications + Supply Analog - Nominal 2 VDC Range 8 to 5 VDC 5 ma 6 µsec/degree ±% Load Resistance K ohms Level ( ) DPW = sec. Differential Buffer PW = PW2 Trigger Pulse (CE version) to 5 5 Hz max. PW/PW2.5 to 5 msec vpw to 3.6 msec High (CW) Low (CCW) electrical connections Regulator -VDC 8 to 5 VDC Brown Trigger Blue Trigger 2 Green Gray PW White PW Yellow vpw Lucas Way Hampton, VA USA AccustarSeries_7

7 Headquarter Switzerland: Pewatron AG Thurgauerstrasse 66 CH-85 Zurich Phone Office Germany: Pewatron Deutschland GmbH Edisonstraße 6 D-8576 Unterschleißheim Phone info.de@pewatron.com We are here for you. Addresses and Contacts. Sales Germany & Austria Postcode 3999 Postcode Postcode Austria Postcode Postcode Geometrical sensors elements Kurt Stritzelberger Gerhard Vetter Thorsten Ravagni Phone Mobile Phone Mobile Phone kurt.stritzelberger@pewatron.com gerhard.vetter@pewatron.com thorsten.ravagni@pewatron.com Sales Switzerland & Liechtenstein Sales International Key Accounts Postcode Postcode 2999 Basil Frei Christian Mohrenstecher Peter Felder Phone Mobile Mobile Phone Mobile basil.frei@pewatron.com christian.mohrenstecher@pewatron.com peter.felder@pewatron.com Pressure s Gas sensors / Gas sensor modules Load cells Flow / Level / Medical products Philipp Kistler Phone philipp.kistler@pewatron.com Dr. Thomas Clausen Phone thomas.clausen@pewatron.com Dr. Adriano Pittarelli Phone adriano.pittarelli@pewatron.com Accelerometers / Level Flow sensor elements supplies Linear position sensors Angle sensors Thorsten Ravagni Phone thorsten.ravagni@pewatron.com Sebastiano Leggio Phone sebastiano.leggio@pewatron.com Eric Letsch Phone eric.letsch@pewatron.com Drive technology CH Postcode / DE Drive technology CH Postcode 4999 / AT / IT / FR sensors solutions Roman Homa Mobile roman.homa@pewatron.com Christian Mohrenstecher Mobile christian.mohrenstecher@pewatron.com Osman Coban Phone osman.coban@pewatron.com Sales Other Countries / Product Management Competitive sensor & power supply solutions worldwide