The principle of suddenly Er sensor reachs application

H.

Hall, 1855, 1938) was considering to discover when electric orgnaization of the metal 1879. Discover semiconductor, electric fluid to wait to also have this kind of effect later, and the suddenly Er effect of semiconductor is gotten more by force than the metal much, all sorts of suddenly Er cell that use this phenomenon to be made, apply at industrial automation technology widely, detect the respect such as technology and information processing. Suddenly Er effect is the basic method that studies semiconductor material performance. The suddenly Er coefficient that through Huo Er effect experiment determines, the electric type that can judge semiconductor material, carry stream child chroma and carry stream child the important parameter such as mobility. The suddenly Er effect in the fluid is research " magnetic fluid generates electricity " theoretical foundation. By Huo Er the principle of effect is known, the size of suddenly Er electromotive force depends on: Rh is suddenly Er constant, it and semiconductor material concern what;IC is Huoer component to slant character the ply that;B of buy electric current is semiconductor material for;d of magnetic field intensity. Given to suddenly Er parts of an apparatus, vh will depend on completely the B of magnetic field intensity that is measured. Component of a suddenly Er has 4 derivative terminal commonly, among them two are suddenly Er component slant the input end of IC of buy electric current, additional two output end that are suddenly Er voltage. If two output carry the loop outside forming, can produce suddenly Er electricity. Popularly says, slant the set of buy electric current normally by external fiducial voltage source gives out; if precision demand is high, source of fiducial voltage all is replaced with constant current source. To achieve tall sensitivity, of some suddenly Er component pass feeling cover jacket to have guide high the slope of magnetism coefficient not alloy; the Huo Er electromotive force of this kind of sensor is larger, but in 0.

05T controls occurrence saturation, only applicable be restricted in small amount, use below grain Cheng. In recent years, as a result of the flying development of semiconductor technology, appeared the component of new-style and compositive Huoer of all sorts of types. This kind of component can be divided it is two kinds big, one kind is linear component, another kind is switch kind component. The principle of linear Huoer component: UGN350lT is a kind at present component of more commonly used 3 end linear Huoer. It is comprised by generator of manostat, suddenly Er and amplifier. It is OK to use UGN350lT very comprise a gaussmeter conveniently. Its are used very simple, make first B=0, write down the indication VOH of next watches, stick probe end panel on the object that be measured again, write down next new indication VOH1. Δ VOH=VOH1-VOH, if Δ VOH>0, showing those who get to probe end panel is measured is N pole; it is S pole conversely. The sensitivity of UGN3501T is 7V/T, can measure a B of corresponding intensity of the magnetic induction that be measured from this. If use digital volmeter (DVM) , can get the linear gaussmeter that the graph shows 1 times. Carry is put use high accuracy carry to put CA3130. The specific zero means of this circuit is: After open power source, your B=0, adjust W1 makes the indication of DVM is 0, the neodymium aluminium boracic magnet steel that uses a level next (B=0.

1T) is stuck on probe end panel, adjust W2 makes the indication of DVM is 1V can. If the indication when this gaussmeter detects is - 200mV, criterion what probe end panel detects is S pole, magnetic field intensity is 0.

02T. This gaussmeter is usable also will measure make metrical magnetic field, do not cross DVM to answer watch of instead alternating voltage. Use a figure apparently the circuit of 1 is OK very expand conveniently the function of average number avometer. It is OK to be returned with UGN3501T very the pincerlike ammeter that if the graph is shown 2 times,comprises conveniently. Silicon steel of cold rolling of pincerlike of park of component of will suddenly Er piece in space, when electric current has shed lead, can produce magnetic field in pincerlike cirque, its volume direct ratio counts; at shedding those who pass lead electricity how to circle component of Yu Huoer of action of this magnetic field, the induction gives corresponding suddenly Er electromotive force, its sensitivity is 7V/T, put μ A741 zero through carry, linear enlarge evacuation enters DVM, comprise ammeter of digital type pincerlike. Of this watch debug very simple also: The electric current in lead is zero hour, adjust W1, W2 makes the indication of DVM is 0. Input the electric current of 50A next, tone W3 makes DVM reading is inputted reversely for 5V; - 50A electric current, the number states the value is - 5V. Adjust repeatedly W1, W2, W3, reading can accord with a requirement. This pincerlike ammeter classics experiment, its sensitivity is less than 0.

1V/A, same, this ammeter also can use at alternating current measure, change DVM alternating voltage to express can, very convenient. Application of sensor of Er of Huo Ni Wei and the use suddenly Er sensor application in dynamoelectric bicycle industry are exceedingly wide, in aerospace technology, medical treatment technology, traffic is carried, industry and measure made with a lot of domain such as the test great contribution. Applied domain is at present more active is dynamoelectric bicycle domain. The high quality that all these puts in a Yuhuoniweier 's charge component of type of 4 suddenly Er, other Gao Lingmin spends what Suo Cunqi of suddenly Er effect uses is double Huo Er component of odd perhaps suddenly Er, this makes it very sensitive to enclosing stress, and component of 4 suddenly Er makes these sensor more stable and outstanding. These new-style Gao Lingmin spends Suo Cunqi brush dc machine design technically to not have. Its characteristic has: Wide temperature limits, gao Lingmin is spent, compact model design (SOT-23 and TO-92 are enclosed two kinds choose) for the client, ambipolar lock is put model magnetic component (all can maintain function to stabilize) inside limits of whole use temperature, wide voltage limits, inside buy is retrorse voltage function, accord with the material of ROHS standard, all these good character apply to of all kinds industry do not have mediumly brush voltaic electric machinery and character is very main. Sensor of Er of Huo Ni Wei deserves to have switchpoint of reliable tall magnetism sensitivity, and, its also did not use behead wave to stabilize a technology on suddenly Er component. These character that Huo Ni has make sensor can output complete signal, shorten the lock is put answer time to come 20 small seconds. Suddenly Er sensor turns timing to electric car timing a timing component that just as its name implies is electric car, this is component of a kind of linear timing, the style is very much but working principle is same. It is located in the right of electric car commonly, drive the way of the right hand when travel already, electric car turns rotational relatively spend limits to be in 0, 30 degrees are made between. Turn a signal feature with brake handle: Turn feature of form, signal and its signal change make. Of electric car turn have 3 lead: It is power source respectively (fine red + 5V) , ground wire (fine black) , turn a timing line (line form changes continuously signal is fine green) . Use on electric car turn glazed report turn with Huo Er two kinds, use Huo Er to turn at present electric car holds great majority. Type of cell of common and linear Huoer has: AH3503 AH49E A3515 A3518 SS495 if: Circuit of AH3503 linear suddenly Er by voltage regulator, generator of suddenly Er voltage, linear amplifier and shoot extremely follow implement composition, its are inputted is magnetic induction intensity, output is the voltage that estimates direct ratio with the input. The static state outputs voltage (the half left and right sides that B=0GS) is power source voltage. S magnetic pole appears when face of mark of suddenly Er sensor, drive output prep above magnetic pole of 0 n;N outputs drive the magnetic flux density that outputs voltage n to decide the as most sensitive as parts of an apparatus face under instantaneous of 0 n; and scale. Raise power source voltage to be able to increase sensitivity. Product characteristic: Bulk small, accuracy tall, sensitivity is tall, linear stability of good, temperature good, reliability is high. Hall turns a size that outputs voltage, depend on the magnetic field intensity all round Hall component. Roll turns, changed the magnetic field intensity all round Hall component, also changed Huo Er to turn output voltage. The Huo Er that uses on electric car turns signal has the following kinds: Turn phyletic output voltage, / 5V power supply, turn over / 5V power supply, odd Huo Er turns 1.

1-4.

2(is most) / 4.

2-1.

1(a few) ; odd Huo Er turns 2.

6-3.

7(is few) / 3.

7-2.

6; odd Huo Er turns a 1-2.

5/ 2.

5-1; odd Huo Er turns 2.

5-4/4-2.

5; double Huo Er turns 0-5/5-0; photoelectricity a 0-5(a few) / 5-0. Among them the most commonly used is the following of two kinds of signal turn: 1-4.

2V(common says) , 4.

2-1V(common says to turn over a) . Of two kinds of signal turn in, be 1.

0V ～ 4.

Of 2V turn hold great majority. Of other output voltage turn, the existence in the market is at present very few, already made the product is not mark in the fact, of mark of this kind of blame turn use on inchoate electric car more. Because this is current,the current controller great majority on the market is to identify 1-4.

2V turns the product of a signal. When electric car turn or when controller needs maintenance to change, when the circumstance that once encounter,turns not to match signal and controller, this is opposite with respect to need turn undertake changing making, make its output signal to be able to match controller. Turn to change output signal make: Will turn ravel, the change turns inside the polarity of magnet steel working face, can change turn the potential of an output. If turn inside have two magnet steel, turn two magnet steel respectively 180 ° , if reload good; turns inside have a magnet steel only, take out magnet steel, invert after 180 ° , outfit improve, changed so turn inside the position of rest of magnetic field of Hall component job, came true to turn to change those who output signal thereby make. The lock turns surely turn on added pushbutton of a mechanical switch, mode can regard as changeover pushbutton below the control of controller, use at 1:1Help strength, dynamoelectric, calm fast, the mode of breakdown self check is changed. Suddenly Er sensor turns to electric car brake crank a signal it is electric car electric machinery rotating drive signal, stop signal is the signal of apply the brake that electric machinery stops to turn. Electric car standard asks electric car is when brake apply the brake, controller should cut off the power supply to electric machinery automatically. Because there should be brake handle position to infect feeling cell on brake handle of this report motor-car, when having action of the handlebar that hold check, send brake signal controller, after controller accepts brake signal, stop the power supply to electric machinery instantly. The position of electric motor-car brake handle passes feeling component to have mechanical micro-gap switch (cent machinery often leaves and machinery often shuts two kinds) with component of switch Hall induction (high potential of cent brake low potential and brake two. Mechanical switch have two lead one receives negative pole another receives electrical wiring, apply to controller of low n brake. The controller of brake of tall to support n is received for + 12V, another receives electrical wiring. 3 Hall derivative lines part: Brake line (fine blue + 5V) , negative pole (fine black) , the rest is electrical wiring. The model of type of cell of suddenly Er of switch of common odd polarity has: AH41/ AH3144/ A3144/ A3282. The brake signal that average machine often opens is constant high potential, when brake, the micro-gap switch of brake handle interior closes, its signal becomes low potential. The brake signal that average machine often shuts is constant low potential, when brake, the micro-gap switch of brake handle interior is opened, its signal becomes high potential. The brake signal of brake handle of general electron low potential is constant high potential, when brake, the Hall component signal of brake handle interior retroflexions, its signal becomes low potential. The brake signal of brake handle of general electron high potential is constant low potential, when brake, the Hall component signal of brake handle interior retroflexions, its signal becomes high potential. The change of potential of brake signal discretion, it is whether motor-car of controller identifying report is in brake condition, judge controller to whether give electric machinery power supply thereby. When the brake handle when electric car or controller need maintenance change, when the situation that can encounter brake handle signal and controller not to match, this undertakes changing making to brake handle with respect to need, make its output signal to be able to match controller. Because this is in maintenance practice, no matter the form of brake crank how, also no matter why is controller identifying planted brake signal, should accomplish can undertake be improvemented appropriately to multiform brake signal, become controller level-headed signal in order to match. CNC Milling