CN207966250U - Bohr resonance experiment instrument - Google Patents

Abstract

The utility model discloses a Border resonance experimental instrument, which comprises a photoelectric encoder circuit, a singlechip chip circuit, a voltage stabilizing circuit, a coil current control circuit and a touch screen communication circuit; the photoelectric encoder circuit, the voltage stabilizing circuit, the coil current control circuit and the touch screen communication circuit are respectively and electrically connected with the single chip microcomputer chip circuit. The phase difference between the balance wheel forced vibration stability and the forced force is measured by using the photoelectric encoder to replace a flash lamp, so that the precision and the efficiency are higher; the zero position signal of the photoelectric encoder is used as a signal code for measuring the period and the amplitude of the balance wheel and the stepping motor during rotation, so that the zero calibration function of the instrument is increased, and the error caused by the deviation of the zero position signal due to the elastic deformation of a spring connected with the balance wheel is avoided, so that the measured experimental data are more accurate; the touch screen is used as a display device and an operation interface, so that mechanical abrasion caused by the traditional keys can be avoided, and the purposes of simplifying the structure of the instrument and prolonging the service life of the instrument are achieved.

Description

A kind of bohr resonance Instrument

Technical field

The utility model is related to a kind of bohr resonance Instruments, belong to bohr resonance instrument technical field.

Background technology

Vibration is a kind of important movement in physics, is one of most common forms of motion of nature.Vibration can be divided into Free vibration (non-damping vibration), damping vibration and forced vibration.Physical quantity does cyclically-varying at any time in vibration, in engineering In technology, most is damping vibration and forced vibration, and the covibration caused by forced vibration.One side of covibration Face shows stronger destructiveness, and on the other hand but there are many practical values can be for used in us.Such as resonance principle is utilized to design The electro-acoustic element of making studies the structure etc. of substance using nuclear magnetic resonance and paramagnetic resonance.So research vibration and forced vibration It is a meaningful Physical Experiment project.

Characterization forced vibration property is the amplitude-frequency characteristic and phase-frequency characteristic (abbreviation amplitude-frequency and phase of forced vibration Frequency characteristic).Existing bohr resonance instrument generally uses the phase difference between the forced vibration of Stroboscopic measure balance wheel and stepper motor. Period and the amplitude when balance wheel rotates are measured respectively using upper and lower two photoelectric doors.

The shortcoming of existing mainstream bohr resonance instrument：(1) flash lamp is read using naked eyes in balance wheel forced vibration to stablize When flash site scale value as phase difference value, data read error is big, and flash lamp lifetime is limited；(2) using up and down Two photoelectric doors measure period and the amplitude of balance wheel, and on balance wheel elongate slots are wanted as the signal code for measuring balance wheel rotation period Photoelectric door is asked to be directed at elongate slots, but as experiment number increases, elongate slots can deviate photoelectric door, increase experimental error.

Utility model content

Technical problem to be solved in the utility model is to overcome the deficiencies of existing technologies, and provides and a kind of using angular transducer Measure the bohr resonance Instrument of balance wheel and stepper motor amplitude, period and phase difference.

In order to achieve the above objectives, the utility model provides a kind of bohr resonance Instrument, including balance wheel and stepper motor, institute It states balance wheel to be perpendicular to the ground arranged, further includes photoelectric encoder circuit, singlechip chip circuit, regulator circuit, coil current control Circuit and touch screen communicating circuit；The photoelectric encoder circuit includes photoelectric encoder one and photoelectric encoder two, the pendulum Wheel and the cooperation linkage of the photoelectric encoder one, the stepper motor and the cooperation linkage of the photoelectric encoder two, the photoelectricity Encoder circuit, the regulator circuit, the coil current control circuit and the touch screen communicating circuit are electrically connected institute State singlechip chip circuit.

Preferentially, the output shaft of the photoelectric encoder one is fixedly and coaxially connected the center of the balance wheel, and the photoelectricity is compiled The output shaft of code device two is fixedly and coaxially connected the output shaft of the stepper motor；The ends the VCC+5V of the photoelectric encoder one is supplied Electricity, the ends the GND ground connection of the photoelectric encoder one, the ends B+, the ends A- of the photoelectric encoder one connect the singlechip chip Circuit；The ends the VCC+5V of the photoelectric encoder two powers, the ends the GND ground connection of the photoelectric encoder two, the photoelectric coding The ends Z+, the ends A-, the ends B+ of device two connect the singlechip chip circuit.

Preferentially, the regulator circuit include TL431 voltage-stablizers, resistance R1, resistance R2, capacitance C17, variable resistance R3, One end cathode K connection resistance R1 of light emitting diode D1 and resistance R12, TL431 voltage-stablizer, another termination+5V of resistance R1, capacitance C17 anodes connect the cathode K of TL431 voltage-stablizers, and capacitance C17 cathode connect the anode A of TL431 voltage-stablizers, TL431 voltage-stablizers Anode A, TL431 voltage-stablizers the R connections of reference pole between parallel resistance R2, TL431 voltage-stablizer anode A ground connection, TL431 Variable resistance R3 in parallel, light emitting diode D1 anodes are separately connected between the reference pole R of cathode K, TL431 voltage-stablizer of voltage-stablizer The cathode K of TL431 voltage-stablizers, the singlechip chip the circuit ,+5V power supplies of light emitting diode D1 anodes, light emitting diode D1 are negative It is grounded after the series resistance R12 of pole.

Preferentially, including Switching Power Supply and relay circuit, the relay circuit includes relay Q4, diode D2, Resistance R11 and S9013 triode, the emitter ground connection of S9013 triodes, the base series resistor R11 of S9013 triodes are right After connect the singlechip chip circuit, one end of the collector connection relay Q4 coils of S9013 triodes, relay Q4 Series diode D2 between coil both ends, relay Q4 uses+12V power, the ports P3, the ends P4 switched in relay Q4 Mouth, stepper motor and Switching Power Supply series connection.

Preferentially, the coil current control circuit includes LM358 operational amplifiers, coil, tri- pole capacitance C6, TIP50 Pipe, resistance R4, capacitance C5, resistance R5, resistance R6, resistance R7 and triode BU406, the balance wheel between the coil, The ends VCC- of LM358 operational amplifiers are grounded, and the ends in+ of LM358 operational amplifiers connect the singlechip chip circuit, It is grounded after the ends in- series resistance R6, the resistance R7 of LM358 operational amplifiers, the node connection three between resistance R6, resistance R7 The emitter e 3 of pole pipe BU406 is connected between the ends in- of LM358 operational amplifiers and the ends out1 of LM358 operational amplifiers The base stage of TIP50 triodes, TIP50 triodes are connected after the ends the out1 series resistance R4 of capacitance C5, LM358 operational amplifier Emitter connecting triode BU406 base stage b1, TIP50 triode collector connecting triode BU406 collector c2, The cathode of the collector connection capacitance C6 of TIP50 the triodes ,+12V power supplies of capacitance C6 anodes, capacitance C6 connect to be formed with coil Circuit.

Preferentially, the touch screen communicating circuit include touch screen, MAX232TTL-232 electrical level transferring chips, capacitance C7, + 5V the power supplies of the ends VCC of capacitance C8, capacitance C9 and capacitance C10, MAX232TTL-232 electrical level transferring chip, capacitance C7 cathode, Capacitance C7 anodes connect the ends V+, and capacitance C8 anodes, capacitance C8 cathode are separately connected MAX232TTL-232 electrical level transferring chips C1+ End and the ends C1-, capacitance C9 anodes, capacitance C9 cathode are separately connected the ends electrical level transferring chip C2+ MAX232TTL-232 and C2- It holds, is grounded after the ends the V- series capacitance C10 cathode of MAX232TTL-232 electrical level transferring chips, MAX232TTL-232 level turns Change the GND ground connection of chip, 1 port, 2 ends of the ports T2OUT, the ports R2IN of TTL-232 electrical level transferring chips by interface P2 Mouth is connected with the ports RXD of touch screen, the ports TXD respectively, and touch screen passes through interface P2 uses+12V and powers, MAX232TTL- The ports T2IN, the ports R2OUT of 232 electrical level transferring chips are all connected with singlechip chip circuit.

Preferentially, the singlechip chip circuit includes IAP15W4K58S4 microcontrollers, resistance R8, resistance R9, resistance The ends the VCC+5V power supplies of R10, capacitance C11, capacitance C16 and capacitance C12, IAP15W4K58S4 microcontroller；IAP15W4K58S4 is mono- The ports the P1.3 series connection of the ports P1.1, resistance R8, resistance R9, resistance R10 and IAP15W4K58S4 microcontroller of piece machine, resistance Be grounded after node series capacitance C11 between R8, resistance R9, the ports P1.3 of resistance R10 and IAP15W4K58S4 microcontroller it Between node series capacitance C12 after be grounded, be grounded after the node series capacitance R16 between resistance R9, resistance R10, resistance R9, electricity The node hindered between R10 connects LM358 operational amplifiers；Node between resistance R9, resistance R10 connects LM358 operation amplifiers The ends in+ of device.

Preferentially, the ends B+ of the photoelectric encoder one connect the ports P3.2 of the IAP15W4K58S4 microcontrollers, institute The ends A- for stating photoelectric encoder one connect the ports P2.2 of the IAP15W4K58S4 microcontrollers；The Z+ of the photoelectric encoder two End connects the ports P2.4 of the IAP15W4K58S4 microcontrollers, described in the ends the A- connection of the photoelectric encoder two The ends B+ of the ports P2.3 of IAP15W4K58S4 microcontrollers, the photoelectric encoder two connect the IAP15W4K58S4 monolithics The ports P3.3 of machine.

Preferentially, the ends VCC of light emitting diode D1 anodes connection IAP15W4K58S4 microcontrollers；The base of S9013 triodes Then pole series resistance R11 connects the ports P2.0 of IAP15W4K58S4 microcontrollers.

Preferentially, the ports T2IN of MAX232TTL-232 electrical level transferring chips connect IAP15W4K58S4 microcontrollers The ports P3.7, the ends P3.6 of the ports the R2OUT connection IAP15W4K58S4 microcontrollers of MAX232TTL-232 electrical level transferring chips Mouthful.

The advantageous effect that the utility model is reached：

1. instrument damage rate reduces, experimental precision improves：This works replaces flash lamp to measure balance wheel using photoelectric encoder When forced vibration is stablized and the phase difference that is forced between power, more precisely efficiently；And the service life of photoelectric encoder is much Higher than flash lamp, instrument damage rate is greatly reduced, improves the service life of the present apparatus, enhances present apparatus reliability；

2. using the zero signal of photoelectric encoder as the signal in period and amplitude when measuring balance wheel and stepper motor rotation Code, increases the school zero power energy of the present apparatus, and zero signal is sent out caused by avoiding the previous spring deformation being connected with balance wheel The error that raw offset is brought so that measured balance wheel and stepper motor period and amplitude value are more accurate；

3. operating process is terse, experimental result is intuitive：By touch screen so that apparatus structure is simplified, experimental implementation stream Cheng Gengjia is terse；By touch screen real-time display balance wheel and stepper motor amplitude curve, operated in the form of clicking picture The abrasion for avoiding conventional keys improves the service life of instrument；Touch screen has data storage function, passes through data form Form store obtained experimental data, data facilitate calling and intuitive display；

4. present apparatus experimental implementation is alternative wide, this works can be in free oscillation, damped oscillation, forced oscillation three Free switching between experiment, experiment operability is strong, and existing bohr resonance instrument has to first to complete damped oscillation could to carry out Forced oscillation is tested, and experiment is alternative limited.

Description of the drawings

Fig. 1 is the principles of the present invention block diagram；

Fig. 2 is the circuit diagram of the utility model；

Fig. 3 is the schematic diagram of the utility model coil and balance wheel.

Mark meaning in attached drawing, 1- coils；2- balance wheels.

Specific implementation mode

The utility model is further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating this The technical solution of utility model, and the scope of protection of the utility model cannot be limited with this.

A kind of bohr resonance Instrument, including balance wheel and stepper motor, the balance wheel are arranged perpendicular to the ground, including photoelectricity is compiled Code device circuit, singlechip chip circuit, regulator circuit, coil current control circuit and touch screen communicating circuit；The photoelectricity is compiled Code device circuit includes photoelectric encoder one and photoelectric encoder two, and the balance wheel and the cooperation of the photoelectric encoder one link, institute State stepper motor and the cooperation linkage of the photoelectric encoder two, the photoelectric encoder circuit, the regulator circuit, the coil Current control circuit and the touch screen communicating circuit are electrically connected the singlechip chip circuit.

Further, the output shaft of the photoelectric encoder one is fixedly and coaxially connected the center of the balance wheel, the photoelectricity The output shaft of encoder two is fixedly and coaxially connected the output shaft of the stepper motor；The ends the VCC+5V of the photoelectric encoder one is supplied Electricity, the ends the GND ground connection of the photoelectric encoder one, the ends B+, the ends A- of the photoelectric encoder one connect the singlechip chip Circuit；The ends the VCC+5V of the photoelectric encoder two powers, the ends the GND ground connection of the photoelectric encoder two, the photoelectric coding The ends Z+, the ends A-, the ends B+ of device two connect the singlechip chip circuit.

Further, the regulator circuit includes TL431 voltage-stablizers, resistance R1, resistance R2, capacitance C17, variable resistance One end cathode K connection resistance R1 of R3, light emitting diode D1 and resistance R12, TL431 voltage-stablizer, another termination+5V of resistance R1, Capacitance C17 anodes connect the cathode K of TL431 voltage-stablizers, and capacitance C17 cathode connect the anode A of TL431 voltage-stablizers, and TL431 is steady The anode A ground connection of parallel resistance R2, TL431 voltage-stablizer between the anode A of depressor, the reference pole R connections of TL431 voltage-stablizers, Variable resistance R3 in parallel, light emitting diode D1 anodes point between the reference pole R of cathode K, TL431 voltage-stablizer of TL431 voltage-stablizers Not Lian Jie TL431 voltage-stablizers cathode K, the singlechip chip circuit, light emitting diode D1 anodes+5V power supply, light-emitting diodes It is grounded after pipe D1 cathode series resistances R12；Resistance R1 values are 100 Ω, and capacitance C17 is 25V, 1000uF, and variable resistance R3 is maximum Value is 10K, and resistance R12 values are 10K.

Further, including Switching Power Supply and relay circuit, the relay circuit include relay Q4, diode D2, resistance R11 and S9013 triode, the emitter ground connection of S9013 triodes, the base series resistor R11 of S9013 triodes Then the singlechip chip circuit, one end of the collector connection relay Q4 coils of S9013 triodes, relay are connected Series diode D2 between Q4 coils both ends, relay Q4 uses+12V power supply, the ports P3 switched in relay Q4, P4 Port, stepper motor and Switching Power Supply series connection.

Further, the coil current control circuit, that is, coil current control module includes LM358 operational amplifiers, line Circle, capacitance C6, TIP50 triode, resistance R4, capacitance C5, resistance R5, resistance R6, resistance R7 and triode BU406, the pendulum Between the coil, the ends VCC- of LM358 operational amplifiers are grounded wheel, and the ends in+ of LM358 operational amplifiers connect institute Singlechip chip circuit is stated, is grounded after the ends in- series resistance R6, the resistance R7 of LM358 operational amplifiers, resistance R6, resistance R7 Between node connecting triode BU406 emitter e 3, the ends in- of LM358 operational amplifiers and LM358 operational amplifiers The ends out1 between series capacitance C5, LM358 operational amplifier the ends out1 series resistance R4 after connect TIP50 triodes base Pole, the collector connecting triode of base stage b1, the TIP50 triode of the emitter connecting triode BU406 of TIP50 triodes The cathode of the collector connection capacitance C6 of collector c2, the TIP50 triode of the BU406 ,+12V power supplies of capacitance C6 anodes, capacitance C6 It connects with coil forming circuit；Capacitance C6 values are 25V, 33uF, and resistance R4 values are 1K, and capacitance C5 values are 0.1uF, and resistance R5 values are 1K, resistance R6 values are 1K；Resistance R7 values are the cement resistor that 1 Ω 5W, R7 is 1 ohm 5 watts, since coil maximum current only has 1A, so resistance R7 rated power can only be 5 Ω.

Further, the touch screen communicating circuit includes touch screen, MAX232TTL-232 electrical level transferring chips, capacitance C7, capacitance C8, capacitance C9 and the ends VCC of capacitance C10, MAX232TTL-232 electrical level transferring chip, capacitance C7 cathode+5V are supplied Electricity, capacitance C7 anodes connect the ends V+, and capacitance C8 anodes, capacitance C8 cathode are separately connected MAX232TTL-232 electrical level transferring chips The ends C1+ and the ends C1-, capacitance C9 anodes, capacitance C9 cathode are separately connected the ends electrical level transferring chip C2+ MAX232TTL-232 and C2- It holds, is grounded after the ends the V- series capacitance C10 cathode of MAX232TTL-232 electrical level transferring chips, MAX232TTL-232 level turns Change the GND ground connection of chip, 1 port, 2 ends of the ports T2OUT, the ports R2IN of TTL-232 electrical level transferring chips by interface P2 Mouth is connected with the ports RXD of touch screen, the ports TXD respectively, and touch screen passes through interface P2 uses+12V and powers, MAX232TTL- The ports T2IN, the ports R2OUT of 232 electrical level transferring chips are all connected with singlechip chip circuit；Capacitance C7, capacitance C8, capacitance C9 It is 50V, 1uF with capacitance C10.

Further, the singlechip chip circuit includes IAP15W4K58S4 microcontrollers, resistance R8, resistance R9, resistance The ends the VCC+5V power supplies of R10, capacitance C11, capacitance C16 and capacitance C12, IAP15W4K58S4 microcontroller；IAP15W4K58S4 is mono- The ports the P1.3 series connection of the ports P1.1, resistance R8, resistance R9, resistance R10 and IAP15W4K58S4 microcontroller of piece machine, resistance Be grounded after node series capacitance C11 between R8, resistance R9, the ports P1.3 of resistance R10 and IAP15W4K58S4 microcontroller it Between node series capacitance C12 after be grounded, be grounded after the node series capacitance R16 between resistance R9, resistance R10, resistance R9, electricity The node hindered between R10 connects LM358 operational amplifiers；Resistance R8 values are 10K, and resistance R9 values are 10K, and resistance R10 values are 1K, Capacitance C11, capacitance C12 values are 0.1uF；The ends in+ of node connection LM358 operational amplifiers between resistance R9, resistance R10.

Further, the ends B+ of the photoelectric encoder one connect the ports P3.2 of the IAP15W4K58S4 microcontrollers, The ends A- of the photoelectric encoder one connect the ports P2.2 of the IAP15W4K58S4 microcontrollers；The photoelectric encoder two The ends Z+ connect the ports P2.4 of the IAP15W4K58S4 microcontrollers, described in the ends the A- connection of the photoelectric encoder two The ends B+ of the ports P2.3 of IAP15W4K58S4 microcontrollers, the photoelectric encoder two connect the IAP15W4K58S4 microcontrollers The ports P3.3.

Further, the ends VCC of light emitting diode D1 anodes connection IAP15W4K58S4 microcontrollers；S9013 triodes Then base series resistor R11 connects the ports P2.0 of IAP15W4K58S4 microcontrollers.

Further, the ports T2IN of MAX232TTL-232 electrical level transferring chips connect IAP15W4K58S4 microcontrollers The ports P3.7, the ends P3.6 of the ports the R2OUT connection IAP15W4K58S4 microcontrollers of MAX232TTL-232 electrical level transferring chips Mouthful.

Photoelectric encoder one and two output digit signals of photoelectric encoder are handled through microcontroller obtains balance wheel and stepper motor Information, the IAP15W4K58S4 singlechip chips such as period, amplitude and phase difference output signal to touch screen, by balance wheel and stepping Period, amplitude and the phase information of motor are shown on touch screen；Touch screen module is answered according to the operation the output phase of experimenter Data-signal to microcontroller, microcontroller executes corresponding operation again according to these signals, realizes to stepper motor rotating speed and line The control of loop current.

The ports Z+ of photoelectric encoder two are connected as zero signal for P2.4 mouthfuls with IAP15W4K58S4 microcontrollers, are used for instrument Device school zero, stepper motor is powered by Switching Power Supply, and P3, P4 interface of relay are separately connected stepping stepper motor and Switching Power Supply To realize control stepper motor switch；Coil current control circuit supplies coil using the constant current output pattern of two-stage amplification Electricity.

The TTL-232 level conversion electricity of touch screen and IAP15W4K58S4 microcontrollers being made of indirectly MAX232 chips Road, sending and receiving come between realizing by serial ports one-byte instruction between touch screen and IAP15W4K58S4 microcontrollers Communication.

IAP15W4K58S4 singlechip chips are internally integrated D/A chips and generate pwm signal, are exported via low-pass filter circuit Stable analog voltage signal, the analog signal is by the adjustable constant flow source circuit based on LM358 operational amplifier chips to line Circle power supply is to achieve the purpose that generate different size electromagnetic damping power to balance wheel.

IAP15W4K58S4 singlechip chips control it by program and export the pwm signal of different duty, according to difference Duty ratio generates different size of pulse signal to control stepping stepper motor rotating speed.

TL431 regulator circuits are to be based on TL431 chips, adjusted by potentiometer obtain stable+5V voltages come to IAP15W4K58S4 singlechip chips are powered.

Relay circuit is to control triode by controlling IAP15W4K58S4 singlechip chips fulgurite foot low and high level S9013 turn-on and turn-off, and then the reed for controlling relay redirects to realize the control to stepping power supply for step-by-step motor.

There can be the following using the present apparatus：

One, apparatus structure is simplified, and experiment operability is strong；

Two, high-precision balance wheel and stepper motor movement position information can easily be obtained using photoelectric encoder；

Three, increase school zero power energy, largely reduce experimental error；

Four, period and amplitude curve of real-time display balance wheel and stepper motor on the touchscreen；

Five, operation and control part avoids mechanical wear, improves instrument service life.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change The scope of protection of the utility model is also should be regarded as into deformation.

Claims (10)

1. a kind of bohr resonance Instrument, including balance wheel and stepper motor, the balance wheel are arranged perpendicular to the ground, which is characterized in that Further include photoelectric encoder circuit, singlechip chip circuit, regulator circuit, coil current control circuit and touch screen communication electricity Road；The photoelectric encoder circuit includes photoelectric encoder one and photoelectric encoder two, the balance wheel and the photoelectric encoder One cooperation linkage, the stepper motor and the cooperation linkage of the photoelectric encoder two, the photoelectric encoder circuit, the voltage stabilizing Circuit, the coil current control circuit and the touch screen communicating circuit are electrically connected the singlechip chip circuit.

2. a kind of bohr resonance Instrument according to claim 1, which is characterized in that the output of the photoelectric encoder one Axis is fixedly and coaxially connected the center of the balance wheel, and the output shaft of the photoelectric encoder two is fixedly and coaxially connected the stepper motor Output shaft；The ends the VCC+5V of the photoelectric encoder one powers, the ends the GND ground connection of the photoelectric encoder one, the photoelectricity The ends B+, the ends A- of encoder one connect the singlechip chip circuit；The ends the VCC+5V of the photoelectric encoder two powers, described The ends GND of photoelectric encoder two are grounded, and the ends Z+, the ends A-, the ends B+ of the photoelectric encoder two connect the singlechip chip electricity Road.

3. a kind of bohr resonance Instrument according to claim 1, which is characterized in that the regulator circuit includes TL431 The moon of voltage-stablizer, resistance R1, resistance R2, capacitance C17, variable resistance R3, light emitting diode D1 and resistance R12, TL431 voltage-stablizer The one end pole K connection resistance R1, another termination+5V of resistance R1, capacitance C17 anodes connect the cathode K, capacitance C17 of TL431 voltage-stablizers Cathode connects the anode A of TL431 voltage-stablizers, between the anode A of TL431 voltage-stablizers, the reference pole R connections of TL431 voltage-stablizers simultaneously The anode A for joining resistance R2, TL431 voltage-stablizer is grounded, between the reference pole R of cathode K, TL431 voltage-stablizer of TL431 voltage-stablizers simultaneously Join variable resistance R3, light emitting diode D1 anodes are separately connected the cathode K of TL431 voltage-stablizers, the singlechip chip circuit, send out Optical diode D1 anodes+5V powers, and is grounded after light emitting diode D1 cathode series resistances R12.

4. a kind of bohr resonance Instrument according to claim 1, which is characterized in that including Switching Power Supply and relay electricity Road, the relay circuit include relay Q4, diode D2, resistance R11 and S9013 triode, the transmitting of S9013 triodes Pole is grounded, then the base series resistor R11 of S9013 triodes connects the singlechip chip circuit, the collection of S9013 triodes Electrode connects one end of relay Q4 coils, series diode D2 between relay Q4 coils both ends, and relay Q4 uses+ 12V powers, the ports P3, the ports P4, stepper motor and the Switching Power Supply series connection switched in relay Q4.

5. a kind of bohr resonance Instrument according to claim 1, which is characterized in that the coil current control circuit packet Include LM358 operational amplifiers, coil, capacitance C6, TIP50 triode, resistance R4, capacitance C5, resistance R5, resistance R6, resistance R7 With triode BU406, the balance wheel is between the coil, and the ends VCC- of LM358 operational amplifiers are grounded, LM358 operations The ends in+ of amplifier connect the singlechip chip circuit, after the ends in- series resistance R6, the resistance R7 of LM358 operational amplifiers Ground connection, the emitter e 3 of the node connecting triode BU406 between resistance R6, resistance R7, the ends in- of LM358 operational amplifiers Connect after the series capacitance C5 between the ends out1 of LM358 operational amplifiers, the ends the out1 series resistance R4 of LM358 operational amplifiers The base stage of TIP50 triodes is connect, base stage b1, the TIP50 triode of the emitter connecting triode BU406 of TIP50 triodes The cathode of the collector connection capacitance C6 of collector c2, the TIP50 triode of collector connecting triode BU406, capacitance C6 is just Pole+12V powers, and capacitance C6 connects forming circuit with coil.

6. a kind of bohr resonance Instrument according to claim 1, which is characterized in that the touch screen communicating circuit includes Touch screen, MAX232TTL-232 electrical level transferring chips, capacitance C7, capacitance C8, capacitance C9 and capacitance C10, MAX232TTL-232 The ends VCC of electrical level transferring chip, the+5V power supplies of capacitance C7 cathode, capacitance C7 anodes connect the ends V+, capacitance C8 anodes, capacitance C8 Cathode is separately connected the ends electrical level transferring chip C1+ MAX232TTL-232 and the ends C1-, and capacitance C9 anodes, capacitance C9 cathode connect respectively Connect the ends electrical level transferring chip C2+ MAX232TTL-232 and the ends C2-, the ends the V- series electrical of MAX232TTL-232 electrical level transferring chips It is grounded after holding C10 cathode, the GND ground connection of MAX232TTL-232 electrical level transferring chips,

The ports T2OUT of TTL-232 electrical level transferring chips, the ports R2IN by 1 port of interface P2,2 ports respectively and touch-control The ports RXD of screen, the connection of the ports TXD, touch screen are powered by interface P2 uses+12V, MAX232TTL-232 level conversion cores The ports T2IN, the ports R2OUT of piece are all connected with singlechip chip circuit.

7. a kind of bohr resonance Instrument according to claim 5, which is characterized in that the singlechip chip circuit includes IAP15W4K58S4 microcontrollers, resistance R8, resistance R9, resistance R10, capacitance C11, capacitance C16 and capacitance C12, The ends the VCC+5V of IAP15W4K58S4 microcontrollers powers；The ports P1.1 of IAP15W4K58S4 microcontrollers, resistance R8, resistance R9, The ports P1.3 of resistance R10 and IAP15W4K58S4 microcontroller are connected, the node series capacitance C11 between resistance R8, resistance R9 After be grounded, be grounded after the node series capacitance C12 between the ports P1.3 of resistance R10 and IAP15W4K58S4 microcontroller, resistance It is grounded after node series capacitance R16 between R9, resistance R10, the node connection LM358 operations between resistance R9, resistance R10 are put Big device；The ends in+ of node connection LM358 operational amplifiers between resistance R9, resistance R10.

8. a kind of bohr resonance Instrument according to claim 7, which is characterized in that the ends B+ of the photoelectric encoder one The ports P3.2 of the IAP15W4K58S4 microcontrollers are connected, described in the ends the A- connection of the photoelectric encoder one The ports P2.2 of IAP15W4K58S4 microcontrollers；The ends Z+ of the photoelectric encoder two connect the IAP15W4K58S4 microcontrollers The ports P2.4, the ends A- of the photoelectric encoder two connect the ports P2.3 of the IAP15W4K58S4 microcontrollers, the light The ends B+ of photoelectric coder two connect the ports P3.3 of the IAP15W4K58S4 microcontrollers.

9. according to any a kind of bohr resonance Instrument in claim 3,4 and 7, which is characterized in that light emitting diode D1 anodes connect the ends VCC of IAP15W4K58S4 microcontrollers；Then the base series resistor R11 of S9013 triodes is connected The ports P2.0 of IAP15W4K58S4 microcontrollers.

10. according to any a kind of bohr resonance Instrument in claim 6 and 7, which is characterized in that MAX232TTL- The ports P3.7 of the ports the T2IN connection IAP15W4K58S4 microcontrollers of 232 electrical level transferring chips, MAX232TTL-232 level turn Change the ports P3.6 of the ports the R2OUT connection IAP15W4K58S4 microcontrollers of chip.