Angle sensor is to point to the sensor that can experience the point of view that be measured and is changed into usable output signal. Angle sensor, just as its name implies, it is to be used detect of angle. There is an opening in its body, can cooperate happy tall axis. Should connect when going up to RCX, axis every had turned 1/16 circle, angle sensor is counted with respect to the accountant.

 

When turning toward a direction, computation increases, when rotational direction is changed, computation decreases. Of computation and angle sensor first

 

 

The angle that rotates through computation is OK very easy measure a position and speed. Should go up in the join on robot body wheel (or will move through positive drive robot) when, can according to gyral angle and wheel circumferential number concludes the distance with mobile robot. Can change the distance into speed next, you also can be divided with it use time with place.

 

Actually, the basic equation that computation is apart from is: Be apart from time of = speed ×

 

Can get from this: Speed = is apart from / time

 

 

Sensitive angle sensor uses magnetism high-powered compositive magnetism sensing element, use magnetism signal induction to be not osculatory characteristic, cooperate microprocessor to undertake intelligence changes signal to handle the sensor of new generation angle that makes.

 

 

Characteristic: Without adjacent and contact, tall sensitivity, infinite rotational life, without noise, tall repeatability, high frequency it is good to answer character.

 

1, magnet steel position did not aim automatic compensation;

2, breakdown detects function;

3, blame contact position detects function, it is the good choice of demand of application of contented and harsh environment.

 

1, the rotate speed coming back such as industry of appearance of instrument of equipment of construction of industrial machinery, project machine, petrifaction equipment, medical treatment equipment, aerospace, national defence is spent and of angle measure.

2, angular displacement of step on the gas of car electron foot, steering wheel position, seat position, before headlight position;

3, automation robot, athletic control, rotate to electric machinery turns and be controlled.

 

 

Sensor of capacitance type angular displacement is used at measuring fixed part (stator) with rotational component (rotor) the corner coming back between is spent, because its have a structure simple, measure precision tall, sensitivity is tall, suit trends to measure wait for a characteristic, and be applied extensively at industrial automata.

 

Generally speaking, sensor of capacitance type angular displacement by one group or fixed plate and rotational plate comprise a certain number of group sector, to assure the precision of sensor and sensitivity, the indirect change that because the change of the element such as environmental temperature brings about appearance of dielectric constant, plate to wait,avoids at the same time, produce adverse effect to sensor function then, to the making material of sensor, treatment craft and installation precision raised taller requirement, to overcome the limitation of sensor of capacitance angular displacement, domestic and international scientific worker undertook a large number of long-term research work, its are main thoughtway is sensor the design becomes differential structure.

 

 

 

 

Component of You Min feeling, measure component of circuit, intelligence and interface component to form, if pursue,the structural place of sensing element is shown 1, measure a component to comprise; intelligence component to calculate unit to wait for component of compositive; interface to output the composition such as unit of communication of unit, RS232 by electric current by unit of wave of I/O unit, A/D unit, filter, goniometer by choice unit, incentive source and charge detecting element.

Sensing element detects the capacitance cost that reflects angle position, the initiative changeover that is sensor is unit, measured unit to use fight stray advancedly small electric capacity detects circuit, capacitance value changeover is telegraphic date, the main function of intelligent component is to pass computation of scale type algorithm to give angular displacement to measure, output goniometer to calculate a result by interface component finally.

 

 

Obliquitous sensor often is used at systematic level to measure, can divide from working principle place liquid of ” type, “ to place gas of ” type, “ to place ” for “ solid 3 kinds of obliquitous sensor, obliquitous sensor still can be used measure the posture obliquitous change to horizontal to measure.

 

 

Theoretical foundation is Newton the 2nd law, according to basic physical principle, in interior of a system, speed cannot be measured, but can measure its acceleration however.

 

If initial velocity is foregone, can pass linear velocity of integrating meter cipher out, can calculate a straight displacement of the lines then. So it is the sensor of a kind of acceleration that applies inertial principle actually.

 

When obliquitous sensor is dormant namely flank and perpendicular direction do not have acceleration action, so action is in above it have gravitational acceleration only. The included angle between gravitational and vertical axis and axis of acceleration sensor delicacy is banking angle.

 

 

As the development of MEMS technology, inertial sensor become in a few years of in the past the most successful, apply one of parts of an apparatus of the most extensive system of personal computer cable, and small accelerometer is inertial sensor crackajack delegate.

 

Regard the most mature inertial sensor as application, present MEMS accelerometer has very tall compositive degree, pass feeling system and interface line namely compositive go up in a chip.

 

 

Obliquitous sensor MCU, MEMS accelerometer, modulus change-over circuit, communication unit all is compositive in a very small circuit board above. Angle of OK and direct output tilt data, the use that makes people more convenient it.

 

Its characteristic is: Sensor of instrument of silicon personal computer is measured (the double axis dip that MEMS) is ginseng face with horizontal changes. Output angle is reference with level face, datum plane but by again calibration.

 

Data means is outputted, interface form includes RS232, RS485 and but custom-built wait for a variety of means. Fight outside electromagnetism to disturb ability strong.