CN205263816U - Sensilla circuit is recalled to exponent form - Google Patents

Abstract

The utility model discloses a sensilla circuit is recalled to exponent form. The utility model discloses an integrated operational amplifier U1, integrated operational amplifier U2 and multiplier U3, voltage u constitutes magnetic flux through integrated operational amplifier U1 and produces the circuit, integrated operational amplifier U1 is used for realizing integral and the operation of opposition proportion, finally obtain the magnitude of current through integrated operational amplifier U2 and multiplier U3 again with output signal, integrated operational amplifier U2 is used for realizing integral, index operation and additive operation, obtain the exponential signal of needs, multiplier U3 realizes multiplying each other exponential signal and the magnetic flux that obtains, obtain the ultimate sensilla magnitude of current of recalling. The utility model provides an analog circuit of sensilla characteristic is recalled in the realization for the magnetic flow current characteristics of sensilla is recalled in the simulation, replaces and actually recalls sensilla experiment and application and research.

Description

A kind of exponential type is recalled sensor circuit

Technical field

The utility model belongs to circuit design technique field, and what relate to a kind of exponential form recalls sensor circuit, toolBody relates to a kind of index of coincidence type and recalls the compact circuit of hysteresis relation of sensor magnetic flux-electric current.

Background technology

A class of recalling sensor (or claim memory inductor) and being after memristor has the non-linear of memory characteristicCircuit elements device. Similar with memristor, this type of memory device does not need external power source just to have the merit of recall infoCan, there is the characteristics such as unique memory, hard switching and dynamic memory ability because of it, make it at medical science, biologyScience, microelectronics, neutral net and non-loss storage, study, be suitable for and the emulation of spontaneous behaviour etc.There is tempting potential application in field. Memristor relatively, the research of recalling sensor is also fewer, also unrealNow recall really sensor device, current research is in the modeling state to its characteristic, although reported severalPlant and recall sensor modeling, but its Mathematical Modeling and circuit model are perfect not enough. Therefore, new in the urgent need to proposingRecall sensor Mathematical Modeling and equivalent circuit, and replace and actual recall inductor component for circuit with its circuit modelExperimental study and the design of application circuit in.

At present, though reported the Mathematical Modeling of recalling on a small quantity sensor, most models all only rests on theoryAnalyze and simulating, verifying, and the equivalent circuit seldom being formed by hardware circuit, some models are more complicated, causeIn practical application, be difficult to realize; Some errors are larger, are difficult to accurately simulate the actual characteristic of recalling sensor. CauseThis, design a kind of Mathematical Modeling of its characteristic and corresponding equivalent-circuit model of more meeting, and recalls sense for increaseThe type of device model and following realize that actual to recall sensor significant.

Summary of the invention

For prior art above shortcomings, the utility model proposes a kind of sensor of recalling of exponential formMathematical Modeling and equivalent-circuit model, in order to simulate magnetic flux-current characteristics of recalling sensor, substitute the actual sensor of recallingCarry out circuit design and application.

The technical scheme that the utility model technical solution problem is taked is as follows: the utility model comprises magnetic fluxProduce circuit and exponential type and recall sensor equivalent circuit, magnetic flux produces circuit by integrated operational amplifier U1 groupBecome, the magnetic flux of generation is recalled the input signal of sensor equivalent circuit, integrated operational amplifier as exponential typeU1 is used for realizing integral operation and anti-phase scale operation. Exponential type is recalled sensor equivalent circuit and is put by integrated computationLarge device U2 and multiplier U3 form, and integrated operational amplifier U2 is used for realizing integral operation, exponent arithmeticAnd add operation, obtaining the exponential signal that needs, multiplier U3 realizes exponential signal and the magnetic flux that obtainsAmount multiplies each other, and obtains the final sensor magnitude of current of recalling.

Described integrated operational amplifier U1, integrated operational amplifier U2 adopt LM324, and multiplier U2 adoptsWith AD633; Sensor magnetic flux is recalled in the 7th pin output of integrated operational amplifier U1The 7th of multiplier U3Sensor current i is recalled in pin output.

The 1st pin of described integrated operational amplifier U1 and one end of the first capacitor C 1, the second resistance R 2One end, one end of the 5th resistance R 5 of one end, the 3rd resistance R 3 connect, the 2nd pin and the first resistanceThe other end of one end of R1, the other end of the first capacitor C 1, the second resistance R 2 connects, the 3rd, 5 pinsGround connection, the 4th pin meets power supply VCC, one end of the 6th pin and the 4th resistance R 4, the 3rd resistance R 3The other end connects, and the 7th pin is connected also with the other end of the 4th resistance R 4, the 1st pin of multiplier U3As the output of magnetic flux, the 11st pin meets power supply VEE.

The 1st pin of described integrated operational amplifier U2 and one end of the second capacitor C 2, the 6th resistance R 6One end of one end, diode D1 connect, the other end of the 2nd pin and the second capacitor C 2, the 6th resistanceThe other end of R6, the other end of the 5th resistance R 5 connect, the 3rd, 10,12 pin ground connection, the 4th pinMeet power supply VCC, the 8th pin is connected with one end of the tenth resistance R 10, the 3rd pin of multiplier U3, theThe other end of one end of 9 pins and the 8th resistance R 8, one end of the 9th resistance R 9, the tenth resistance R 10 connectsConnect, the 11st pin meets power supply VEE, and one end of the 13rd pin and the 7th resistance R 7, diode D1's is anotherOne end connects, and the 14th pin is connected with the other end of the 7th resistance R 7, the other end of the 9th resistance R 9,The other end of the first resistance R 1 is as voltage input end, the voltage of another termination-1V of the 8th resistance R 8.

The the 2nd, 4, the 6 pin ground connection of described multiplier U3, the 5th pin meets power supply VEE, the 7th pinAs the output of electric current, the 8th pin meets power supply VCC.

The one that designed the utility model can realize recalls sensor flux current index of speciality type simulated equivalent electricRoad, this analog circuit contains 2 integrated operational amplifier chips and 1 multiplier, simple in structure, at orderBefore and following cannot acquisition in the actual situation of recalling inductor component, can replace and actually recall sensor and realize and recall sensor phaseCircuit design, experiment and the application of closing, have important actual meaning to the characteristic and application research of recalling sensorJustice.

Brief description of the drawings

Fig. 1 is equivalent circuit block diagram of the present utility model.

Fig. 2 is the utility model simulating equivalent circuit schematic diagram.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.

Theoretical starting point of the present utility model is the general mathematical expression that exponential type is recalled the flux current characteristic of sensorFormula:

I (t) andFor recalling electric current and the magnetic flux of sensor, For ρ (t)=0 o'clock recall sense valueInverse, ρ₀For coefficient.

As shown in Figure 1, this example exponential type is recalled sensor and is comprised that integrated operational amplifier U1, integrated computation putLarge device U2 and multiplier U3, voltage u obtains recalling the magnetic flux of sensor through integrated operational amplifier U1,Process integrated operational amplifier U2 and multiplier U3 finally obtain recalling the magnitude of current of sensor again; Integrated computationAmplifier U1 mainly realizes integral operation and anti-phase amplification computing; Integrated operational amplifier U2 mainly realizesIntegral operation, exponent arithmetic and add operation; Multiplier U3 realizes the phase multiplication of two signals. U1,U2 adopts LM324, and U3 adopts AD633.

As shown in Figure 2, integrated 4 operational amplifiers in integrated operational amplifier U1, wherein the 1st,2, the operational amplifier that 3 pins are corresponding and the first resistance R 1, the second resistance R 2 and the first capacitor C 1 structureBecome integrating circuit, obtain the magnetic flux of recalling sensor, the voltage of input is that u (t) is defeated by the first resistance R 1Enter the 2nd pin to integrated operational amplifier U1, the voltage of U1 pin 1 is u₁₁(t)：

Operational amplifier corresponding to the 5th, 6,7 pin of integrated operational amplifier U1, with peripheral the 3rd electricityResistance R3, the 4th resistance R 4 form rp-op amp, for realizing input voltage u₁(t) anti-phase increasingBenefit, thus the magnetic flux of forward obtained, and the voltage of U1 pin 7 is u₁₇(t)：

The operational amplifier that the 1st, 2,3 pins of integrated operational amplifier U2 are corresponding and the 5th resistance R 5,The 6th resistance R 6 and the second capacitor C 2 form integrating circuit, obtain the integration of magnetic flux, and as referring toThe input signal of number circuit, the voltage of U2 pin 1 is u₂₁(t)：

The the 12nd, 13,14 pins of integrated operational amplifier U2 and peripheral diode D1 and the 7th resistance R 7Composition index circuit, for realizing the exponent arithmetic of magnetic flux integration, the voltage u of U2 pin 14₂₁₄(t)：

$u_{214}\left(t\right)=-I_s{R}_7(e^{\frac{u_{21}}{U_T}}-1)=-I_s{R}_7(e^{\frac{\mathrm{\ρ}\left(t\right)}{R_5{C}_2{U}_T}}-1)$

The the 8th, 9,10 pins of integrated operational amplifier U2 and peripheral the tenth resistance R 10, the 8th resistanceR8 and the 9th resistance R 9 form adder, and for redundant term-1 of exponential form is disappeared, U2 drawsThe voltage u of pin 8₂₈(t)：

$u_{28}\left(t\right)=-\left(\frac{R_{10}}{R_9}{u}_{214}\right(t)-\frac{R_{10}}{R_8})=\frac{I_s{R}_7{R}_{10}}{R_9}{e}^{\frac{\mathrm{\ρ}\left(t\right)}{R_5{C}_2{U}_T}}-\frac{I_s{R}_7{R}_{10}}{R_9}+\frac{R_{10}}{R_8}$

The model of multiplier U3 is AD633, recalls sensor magnetic flux and magnetic flux integral exponential shape in order to realizeThe product calculation of formula, i.e. the voltage u of U3 output W pin_w(t)：

By above formula abbreviation be:

For exponential type is recalled magnetic flux and the current characteristics of sensor equivalent circuit, withRelatively learn:

$L_0^{-1}=\frac{I_s{R}_4{R}_7{R}_{10}}{R_3{R}_9},{\mathrm{\ρ}}_0=R_5{C}_2{U}_T,\frac{R_4{R}_{10}}{R_3{R}_8}-\frac{I_s{R}_4{R}_7{R}_{10}}{R_3{R}_9}=0$

The particular circuit configurations of the present embodiment: the 1st pin of integrated operational amplifier U1 and the first capacitor C 1One end, one end of the 3rd resistance R 3, one end of the 5th resistance R 5 of one end, the second resistance R 2 connectConnect, one end of the 2nd pin and the first resistance R 1, the other end of the first capacitor C 1, the second resistance R 2The other end connects, the 3rd, 5 pin ground connection, and the 4th pin meets power supply VCC, the 6th pin and the 4th resistanceOne end of R4, the other end of the 3rd resistance R 3 connect, and the other end of the 7th pin and the 4th resistance R 4, take advantage ofThe 1st pin of musical instruments used in a Buddhist or Taoist mass U3 connects and as the output of magnetic flux, the 11st pin meets power supply VEE.

One of the 1st pin of integrated operational amplifier U2 and one end of the second capacitor C 2, the 6th resistance R 6One end of end, diode D1 connects, the other end of the 2nd pin and the second capacitor C 2, the 6th resistance R 6The other end of the other end, the 5th resistance R 5 connect, the 3rd, 10,12 pin ground connection, the 4th pin connectsPower supply VCC, the 8th pin is connected with one end of the tenth resistance R 10, the 3rd pin of multiplier U3, and the 9thThe other end of one end of pin and the 8th resistance R 8, one end of the 9th resistance R 9, the tenth resistance R 10 connectsConnect, the 11st pin meets power supply VEE, and one end of the 13rd pin and the 7th resistance R 7, diode D1's is anotherOne end connects, and the 14th pin is connected with the other end of the 7th resistance R 7, the other end of the 9th resistance R 9,The other end of the first resistance R 1 is as voltage input end, the voltage of another termination-1V of the 8th resistance R 8.

The the 2nd, 4, the 6 pin ground connection of multiplier U3, the 5th pin meets power supply VEE, and the 7th pin is as electricityThe output of stream, the 8th pin meets power supply VCC.

To sum up, the analog circuit of realizing exponential type and recall sensor of the utility model design, it utilizes analog circuitThe flux current characteristic of sensor is recalled in realization, specific implementation recall the flux current characteristic of sensor. The utility modelUtilize integrated operational amplifier and analog multiplier circuit to realize the corresponding computing of recalling in sensor characteristic, wherein,Integrated operational amplifier is mainly used in realizing the integral operation of voltage and magnetic flux, the index fortune of magnetic flux integrationCalculation, voltage reversal are amplified and add operation, and analog multiplier is used for realizing magnetic flux and magnetic flux integral exponentialThe product calculation of form.

Those of ordinary skill in the art will be appreciated that, above embodiment is only new for verifying this practicalityType, and not as to restriction of the present utility model, as long as in scope of the present utility model, to more thanVariation, the distortion of embodiment all will drop in protection domain of the present utility model.

Claims (5)

1. an exponential type is recalled sensor circuit, comprise that magnetic flux produces circuit and exponential type is recalled sensor equivalent circuit, magnetic flux produces circuit and is made up of integrated operational amplifier U1, the magnetic flux producing is recalled the input signal of sensor equivalent circuit as exponential type, integrated operational amplifier U1 is used for realizing integral operation and anti-phase scale operation; Exponential type is recalled sensor equivalent circuit and is made up of integrated operational amplifier U2 and multiplier U3, and integrated operational amplifier U2 is used for realizing integral operation, exponent arithmetic and add operation, obtains exponential signal; Multiplier U3 realizes exponential signal and the magnetic flux that obtains is multiplied each other, and obtains the whole sensor magnitude of current of recalling.

2. exponential type according to claim 1 is recalled sensor circuit, it is characterized in that: described integrated operational amplifier U1, integrated operational amplifier U2 adopt LM324, and multiplier U2 adopts AD633; Sensor magnetic flux is recalled in the 7th pin output of integrated operational amplifier U1, and sensor electric current is recalled in the 7th pin output of multiplier U3.

3. exponential type according to claim 2 is recalled sensor circuit, it is characterized in that: the 1st pin of described integrated operational amplifier U1 and one end of the first capacitor C 1, one end of the second resistance R 2, one end of the 3rd resistance R 3, one end of the 5th resistance R 5 connects, one end of the 2nd pin and the first resistance R 1, the other end of the first capacitor C 1, the other end of the second resistance R 2 connects, the 3rd, 5 pin ground connection, the 4th pin meets power supply VCC, one end of the 6th pin and the 4th resistance R 4, the other end of the 3rd resistance R 3 connects, the other end of the 7th pin and the 4th resistance R 4, the 1st pin of multiplier U3 connects and as the output of magnetic flux, the 11st pin meets power supply VEE.

4. exponential type according to claim 3 is recalled sensor circuit, it is characterized in that: the 1st pin of described integrated operational amplifier U2 and one end of the second capacitor C 2, one end of the 6th resistance R 6, one end of diode D1 connects, the other end of the 2nd pin and the second capacitor C 2, the other end of the 6th resistance R 6, the other end of the 5th resistance R 5 connects, the 3rd, 10, 12 pin ground connection, the 4th pin meets power supply VCC, one end of the 8th pin and the tenth resistance R 10, the 3rd pin of multiplier U3 connects, one end of the 9th pin and the 8th resistance R 8, one end of the 9th resistance R 9, the other end of the tenth resistance R 10 connects, the 11st pin meets power supply VEE, one end of the 13rd pin and the 7th resistance R 7, the other end of diode D1 connects, the other end of the 14th pin and the 7th resistance R 7, the other end of the 9th resistance R 9 connects, the other end of the first resistance R 1 is as voltage input end, the voltage of another termination-1V of the 8th resistance R 8.

5. exponential type according to claim 4 is recalled sensor circuit, it is characterized in that: the 2nd, 4, the 6 pin ground connection of described multiplier U3, and the 5th pin meets power supply VEE, and the 7th pin is as the output of electric current, and the 8th pin meets power supply VCC.