In recent years as shift robot, unmanned drive car and the development that do not have man-machine, to avoiding barrier sensor demand is increasing. Traditional usable will avoid the sensor of barrier has sensor of sensor of diffuse reflection of range finder of sensor of millimeter wave radar, lidar, double eye vision sensor, ultrasonic sensor, infra-red range finding, laser, photoelectricity, vision to wait a moment. Collect a net with labour next small make up does ultrasonic avoid through article understanding what place barrier sensor is to apply?

 

Ultrasonic avoids avoid barrier sensor principle:

Ultrasonic is a kind of sound wave actually, because of 20kHz of frequency prep above, person ear is so inaudible, and directivity is stronger.

 

 

The principle of ultrasonic range finding is more simpler than infrared ray, because sound wave encounters fraise to be able to be reflexed, and the speed of sound wave is foregone, need to know to launch reception time difference only so, go out with respect to can relaxed computation measure an interval, the distance of recombine emitter and receiver, can the actual distance of cipher out fraise, following plan institute are shown.

 

 

 

Photograph of ultrasonic range finding compares infra-red range finding, the price is more cheap, corresponding inductive rate and precision are a few more inferior also. Same, because need to emit sound wave actively, so to too far fraise, precision also can be reduced as the attenuation of sound wave, in addition, below the condition that perhaps violates in fresh gale to the sponge object that absorbs sound wave, ultrasonic will not work. Two ultrasonic that labour collects a net to offer avoid the application with barrier OK and very good sensor arrives robot, unmanned drive the domain such as car and unmanned aircraft.

 

They are MaxBotix ultrasonic avoids respectively barrier sensor – MB1043 MB1033, this ultrasonic avoids barrier sensor is a high resolution (1mm) , the ultrasonic sensor of high accuracy low power comsumption, it goes up in the design, did processing to disturbing noise not only, have fight noise to disturb ability. And different to size goal, with power supply voltage of change, did the compensation of sensitivity. The internal temperature that returns those who have a level additionally is compensated, make measure the distance data that come out more essence of life is accurate. Apply at indoor environment, it is a very good low cost solution!

 

 

 

And ultrasonic avoids barrier sensor modular group – UM0090 is be based on the group of range finding model that sends and receive sensor of ultrasonic of type of an organic whole. Fly from what blast off to receive through measuring ultrasonic time, this model group can detect the object inside 3 meters of limits, be apart from signal through UART interface output. This product has sensitivity tall, answer the characteristic with rapid rate, have better interference rejection performance and stability at the same time, apply extensively at of all kinds robot, unmanned aircraft and intelligent equipment avoid barrier system. Next mask body understand ultrasonic to avoid the applied solution of barrier sensor

 

Ultrasonic avoids barrier sensor applies mediumly in unmanned aircraft

Unmanned aircraft uses all sorts of passing feeling technology realizes own navigation, collision to detect. Increase ceaselessly as the function of unmanned aircraft, avoid barrier technology serves as the safeguard that increases unmanned aircraft safety to fly also the development change quickly as the technology. ” avoid barrier function ” it is as unmanned aircraft in flight process, through its sensor gathers the information of circumjacent environment, measure a distance to make corresponding movement dictate thereby, achieve thereby ” avoid barrier ” action, brought the most immediate profit is, before a few people are bumped for what cause cursorily, now can by avoids barrier function goes avoiding, ensured unmanned aircraft already while the flight is safe, also avoided to be opposite all round the harm of personnel belongings, let flew to get reducing further without the doorsill of man-machine.

 

Ultrasonic avoids barrier sensor applies mediumly in the robot

The robot locates navigation looks independently is simple in fact require data of base area graph + the automation with algorithmic combinative true implementation is automatic navigation, the ultrasonic sensor that uses in the robot is an electron module, measure a distance to arrive in 3cm between 400cm. It can be used at helping robot escape fraise, or the space that is used at other and relevant project is measured and avoid barrier project. Sensor it may be said is to be used detect the working status of robot oneself, and the core part that robot intelligence explores outside work environment and object state. Be measured what can experience a regulation not only, still can change into the parts of an apparatus of usable output signal or device according to definite pattern. Because ultrasonic directivity is strong, the distance that travels in medium is further, consequently ultrasonic often uses at the distance measure, be like range finder and content the measuring instrument, can come true through ultrasonic. Use ultrasonic to detect often compare rapid, convenient, computation simple, accomplish real time control easily, and measuring precision respect can achieve the requirement with practical industry, because this is on the development of mobile robot,also received wide application.

 

Ultrasonic avoids barrier sensor applies mediumly in AGV

What carry market demand and labor cost as content shedding in last few years is ceaseless rise, factory dimensions expands and manage the innovation of mode, the numerous element such as work efficiency and cost control, the function of AGV product and system need to satisfy a client quickly further the demand of tall to the product adaptability. To complex factory environment, no matter be artificial operation or machine operation, installing all is the problem that nots allow to ignore. According to the application that AGV car is in a factory, AGV car avoids barrier system matters to the safety that AGV car is running a course directly. Accordingly fraise detects is a when automatic navigation car studies main problem, it is the premise that realizes safe, regular job.

 

Avoid for barrier, AGV trade security is principal consideration, AGV prevents bump avoid barrier can divide design for two kinds: It is contact design, rise to prevent strike protective action, commonly used contact kind of sensor (if press electric sensor, mechanical switch) install the bottom in bodywork, detect sensor of periphery blame contact (infrared ray, ultrasonic, laser) exploration blind angle, remove amortize to protect action; 2 dispute contact is designed, rise to avoid barrier action, commonly used blame contacts kind of sensor installation to be in bodywork is tallish ahead and rear place, use at car advancement is regressive perhaps to have escape obstacle effect.

 

And ultrasonic sensor with its price precision of cheap, range finding is tall, measure stable, volume small wait for an advantage, be used extensively at AGV avoid barrier detects. Be in preventing sensor of the ultrasonic in bumping into application to defend the principle that bump is to use ultrasonic to encounter fraise can catoptric is characteristic, blast off to detect with reception time going there and back and velocity of sound according to ultrasonic the distance with fraise, prevent to collide with fraise. Because ultrasonic blasts off,come out beam is certain limits space blasts off go out, so ultrasonic is prevented bump made up for laser to prevent bump to only horizontal defends the corrupt practice that strike, make laser is prevented without course navigation forklift bump into more overall safety. Because ultrasonic is in,the speed in air and temperature and humidity are concerned, in more accurate measurement, the change that wants a temperature and humidity and other element consideration go in.