A multi-coil driving based magnetoelectric logic gate circuit and a method for implementing the gate circuit

Abstract

The application provides a kind of magnetic logic gate circuit based on multi-coil drive and gate circuit implementation method, belongs to the field of gate circuit structure.The gate circuit includes magnetic field excitation element, magnetic induction element and post-stage rectification module, wherein the magnetic field excitation element includes AC magnetic field excitation element and two DC magnetic field excitation elements, the AC magnetic field excitation element outputs AC magnetic field, which is used for magnetic induction element to generate magnetic-electric coupling effect, two DC magnetic field excitation elements provide DC magnetic field for magnetic induction element, the input end of two DC magnetic field excitation elements serves as two input ends of the magnetic logic gate circuit, the output end of the magnetic induction element is connected to the input end of the post-stage rectification module, the output end of the post-stage rectification module outputs DC voltage, which serves as the output end of the magnetic logic gate circuit.The application can adjust high and low level input according to the change characteristics of magnetic-electric coefficient, and the driving is simple with low failure rate.

Description

TECHNICAL FIELD

[0001] The present application relates to a gate circuit structure, in particular to a magneto-electric logic gate circuit based on multi-coil driving and an implementation method thereof. BACKGROUND

[0002] A gate circuit is a circuit with logic processing capability, which is widely used in various fields such as digital computers, automatic control modules, digital communication modules and the like in daily life as a basic component unit of digital circuits, and can be mainly used to constitute various flip-flops, combinational logic circuits and sequential logic circuits and the like, so as to further realize the logic function of digital signal processing.

[0003] The existing gate circuits are mainly divided into two categories of TTL gate circuits and CMOS gate circuits, which are respectively composed of bipolar junction transistors and field effect transistors matched with corresponding resistors. When the existing TTL gate circuits and CMOS gate circuits are disturbed by external signals, the normal voltage signals may be between high and low levels, which may cause the logic circuit to be in confusion and output an error signal, so that the logic circuit cannot work normally. Moreover, in a system with large scale, high complexity and high integration, there are a large number of basic gate circuits, and once an error signal is output, the work of the entire system may be affected. The researchers of the 722th Research Institute of China Shipbuilding Industry Group proposed a method of pulling up the output voltage by connecting diodes in series, but in a complex system, the pull-up voltages required by the voltage signals at different points are different, so this method needs to be analyzed in detail for different states, which further increases the complexity of the system, and the addition of multiple diodes may increase the system failure rate, increase unnecessary circuit loss and increase response time. From the analysis of the traditional logic gate circuit and the improved logic gate circuit, it is of practical significance to develop a logic gate circuit with stable output signal and simple and effective driving. SUMMARY

[0004] In view of the technical problems that the existing logic gate circuits are generally affected by interference signals to cause logic confusion of the circuit, and the improved system has high failure rate and long response time, the present application provides a magneto-electric logic gate circuit based on multi-coil driving and a gate circuit implementation method based on the magneto-electric logic gate circuit. The present application has the advantages of stable output, obvious difference between high and low level signals, simple driving and the like, and also has potential application value for replacing the traditional logic gate circuit used in digital circuits.

[0005] The application is based on a multi-coil driven magneto-electric logic gate circuit, which comprises a magnetic field exciting element, a magneto-electric induction element and a post-stage rectification module, wherein the magnetic field exciting element comprises an alternating current magnetic field exciting element and two direct current magnetic field exciting elements, the alternating current magnetic field exciting element outputs an alternating current magnetic field, which is used for the magneto-electric induction element to generate a magneto-electric coupling effect, the two direct current magnetic field exciting elements provide direct current magnetic fields for the magneto-electric induction element, input ends of the two direct current magnetic field exciting elements serve as two input ends of the magneto-electric logic gate circuit, an output end of the magneto-electric induction element is connected with an input end of the post-stage rectification module, and an output end of the post-stage rectification module outputs a direct current voltage, which serves as an output end of the magneto-electric logic gate circuit.

[0006] In further improvement of the application, the magnetic field exciting element is three solenoid coils wound outside the magneto-electric induction element, comprising two direct current bias coils and one alternating current coil. The three solenoid coils are wound outside the magneto-electric induction element, two direct current bias coils provide direct current magnetic fields through direct current voltages, serving as input ends of the logic gate circuit; and the alternating current coil provides an alternating current magnetic field through an alternating current voltage.

[0007] In further improvement of the application, the magneto-electric induction element is a magneto-electric sensor, comprising upper and lower two layers of magnetostrictive elements and a piezoelectric element arranged between the two layers of magnetostrictive elements, which are composed of the upper and lower two layers of magnetostrictive elements and the intermediate piezoelectric element, electrodes are led out from surfaces of the upper and lower two layers of magnetostrictive elements by wires, and a direct current voltage output after rectification and filtering is output as an output end of the logic gate circuit.

[0008] In further improvement of the application, the post-stage rectification and filtering module comprises a rectifier, two input ends of the rectifier are respectively connected with two output ends of the magneto-electric sensor in correspondence, and two output ends of the rectifier output direct current voltages.

[0009] In further improvement of the application, the post-stage rectification and filtering module further comprises a filtering capacitor, and the filtering capacitor is connected in parallel at two ends of the rectifier.

[0010] The application further provides a gate circuit implementation method using the multi-coil driven magneto-electric logic gate circuit, which comprises the following steps:

[0011] S1: an alternating current magnetic field is applied, a frequency of which is equal to a resonant frequency of the magneto-electric induction element, the alternating current magnetic field acts on the magneto-electric induction element to generate a magneto-electric coupling effect, at this time, a voltage signal led out from the magneto-electric induction element is output after rectification and filtering, and the output is very small, less than a conduction voltage drop of a diode of the rectification module, and a post-stage circuit output is 0V, belonging to a low level;

[0012] S2: while keeping the frequency of the alternating current magnetic field as the resonant frequency, a direct current magnetic field is provided, an optimal bias point of the magneto-electric induction element is determined, and a voltage signal input is determined as a high level or a low level according to a value of the optimal bias point;

[0013] Specifically, the application of the direct current voltage provides a direct current magnetic field, when the direct current bias magnetic field applied to the magneto-electric induction element is continuously increased, the magneto-electric coefficient of the magneto-electric induction element such as the magneto-electric sensor first increases and then decreases, and has an optimal bias point, and the magneto-electric sensor is measured at the optimal bias point. When the input direct current voltage signal is between half of the optimal bias point voltage value and the optimal bias point voltage value, it is considered that the input is high level; when there is no input signal, it is considered that the input is low level. When both of the two direct current bias coils apply high level direct current voltage, the output state is determined according to the positional relationship between the working point and the optimal bias point, when the working point is near the optimal bias point, the output voltage of the magneto-electric sensor is greater than the conduction voltage drop of the diode, and belongs to high level; when the working point deviates greatly from the optimal bias point, the output voltage of the magneto-electric sensor is less than the conduction voltage drop of the diode, and belongs to low level.

[0014] S3: keep the alternating current magnetic field frequency as the resonance frequency, set the input voltage signals of the two direct current magnetic field excitation elements as same direction or opposite direction, respectively apply input voltage signals with different amplitudes to the two direct current magnetic field excitation elements, and design different logic gate circuits through the different directions of the signals and the sizes of the input signals.

[0015] The application is further improved, the alternating current magnetic field is provided by alternating current coils passing alternating current, and the direct current magnetic field is provided by input voltage signals of two direct current bias coils.

[0016] The application is further improved, same direction voltage signals are input to the two direct current bias coils, when both of the two direct current bias coils input low level, the output of the magneto-electric induction element cannot drive the rectification of the subsequent rectification module, and low level is output; when one of the two direct current bias coils inputs half of the optimal bias point voltage value and inputs high level, and the other direct current bias coil inputs low level, the output of the magneto-electric sensor cannot drive the rectification of the subsequent rectification module, and low level is output; when both of the two direct current bias coils input half of the optimal bias point voltage value and input high level, the output of the magneto-electric sensor is enough to drive the rectification of the subsequent rectification module, and high level is output, and this process is the realization of the logic and gate.

[0017] The application is further improved, same direction voltage signals are input to the two direct current bias coils, when both of the two direct current bias coils input low level, the output of the magneto-electric induction element cannot drive the rectification of the subsequent rectification module, and low level is output; when one of the two direct current bias coils inputs about 3 / 4 of the optimal bias point voltage value and inputs high level, and the other direct current bias coil inputs low level, the output of the magneto-electric induction element drives the rectification of the subsequent rectification module, and high level is output; when both of the two direct current bias coils input 3 / 4 of the optimal bias point voltage value and input high level, the output of the magneto-electric induction element is enough to drive the rectification of the subsequent rectification module, and high level is output, and this process is the realization of the logic or gate.

[0018] The application is further improved, and reverse voltage signals are input to the two direct current bias coils, when the two direct current bias coils input low level, the magnetic electric induction element cannot drive the rectifier module in the rear stage to rectify, and outputs low level; when one of the direct current bias coils inputs the optimal bias point voltage value and inputs high level, and the other direct current bias coil inputs low level, the magnetic electric induction element drives the rectifier module in the rear stage to rectify, and outputs high level; when the two direct current bias coils input the optimal bias point voltage value and input high level, the magnetic electric induction element cannot drive the rectifier module in the rear stage to rectify, and outputs low level, and the process is the realization of the logic exclusive or gate.

[0019] Compared with the prior art, the application has the beneficial effects that: the application utilizes the magnetic electric induction principle to manufacture a series of new type logic gate circuits, through the selection of the direction and size of the direct current magnetic field input signal, and according to the principle that the magnetic electric coefficient of the magnetic electric induction element increases first and then decreases with the increase of the direct current bias magnetic field, different logic gate circuits can be designed to realize the functions of the logic and gate, or gate and exclusive or gate. Compared with the traditional logic gate circuit, the new type magnetic electric logic gate circuit can adjust the high and low level input according to the change characteristics of the magnetic electric coefficient, avoid the influence of the interference signal on the gate circuit, thereby avoiding the logic confusion of the digital circuit, and has the advantages of simple driving, low failure rate and the like, and has the potential to replace the traditional logic gate circuit in the application of the modern digital control circuit. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an embodiment magnetic electric logic gate circuit structure schematic diagram of the application;

[0021] Figure 2 It is a multi-coil and magnetic electric inductor structure schematic diagram;

[0022] Figure 3 It is a magnetic electric sensor magnetic electric coefficient curve diagram with the change of the direct current bias magnetic field;

[0023] Figure 4 It is an input and output state diagram of the logic and gate in the application;

[0024] Figure 5 It is an input and output state diagram of the logic or gate in the application;

[0025] Figure 6 It is an input and output state diagram of the logic exclusive or gate in the application,

[0026] In the figure, 100 is a magnetic electric sensor, 101 is an alternating current coil, 102 is a direct current bias coil 1, 103 is a direct current bias coil 2, 104 is a rectifier module, 105 is a filter capacitor, and 106 is a direct current output end. DETAILED DESCRIPTION

[0027] The application will be further described in detail below with reference to the accompanying drawings and examples.

[0028] As Figure 1 and Figure 2 shown, the application is based on a multi-coil driven magneto-electric logic gate circuit, including a magneto-electric sensor 100, which is externally wound with alternating current coils 101, direct current bias coils 102 and 103, the output end of which is connected to a rectifier module 104 and a filter capacitor 105, and the rectified and filtered direct current output end 106.

[0029] Example 1

[0030] This example uses a multi-coil driven magneto-electric logic AND gate circuit implementation method, including the following steps:

[0031] S1, select a prepared magneto-electric sensor, a Helmholtz coil, an electromagnet, a dynamic analyzer and a current sensor, the Helmholtz coil provides an alternating magnetic field, the electromagnet provides a direct current bias magnetic field, the dynamic analyzer is used as an alternating current output source and a magneto-electric coefficient measuring instrument, and the current sensor is used to monitor the alternating current size. The output end of the dynamic analyzer is connected to the Helmholtz coil to provide an alternating magnetic field, the magneto-electric sensor is placed in the middle of the Helmholtz coil, and the output end is connected to the input end of the dynamic analyzer. The size of the direct current magnetic field provided by the electromagnet is continuously changed, and the voltage signal size of the magneto-electric sensor output at this time is measured. The magneto-electric coefficient of the magneto-electric sensor under different direct current bias magnetic fields is calculated to obtain the magneto-electric coefficient of the optimal bias point, which is 9.8V / Oe, as shown in Figure 3 .

[0032] S2, the output from the magneto-electric sensor 100 is connected to the rectifier module 104 and the filter capacitor 105, the solenoid coil is wound as two input ends of the logic gate circuit, and the direct current output end after rectification and filtering is used as the output end of the logic gate circuit. Adjust the frequency of the alternating magnetic field to the resonant frequency of the magneto-electric sensor, and keep the alternating magnetic field size at 0.5 Oe. At this time, the output end of the logic gate circuit is 0V, which belongs to low level.

[0033] S3, according to steps S1 and S2, the input signal directions of the direct current bias coils 102 and 103 are selected to be in the same direction. A 4V high level signal is input to the direct current bias coil 1, which is half of the optimal bias point voltage value, and a 0V low level signal is input to the direct current bias coil 2. At this time, the output voltage of the magneto-electric sensor is less than the conduction voltage drop of the diode, and the logic gate circuit outputs 0V low level. A 0V low level signal is input to the direct current bias coil 1, and a 5.7V high level signal is input to the direct current bias coil 2, which is half of the optimal bias point voltage value. At this time, the output voltage of the magneto-electric sensor is less than the conduction voltage drop of the diode, and the logic gate circuit outputs 0V low level.

[0034] S4, 4V high level signal is input to the direct current bias coil 1, and 5.7V high level signal is input to the direct current bias coil 2, at this time, the working point of the magneto-electric sensor is near the optimal direct current bias point, the output voltage is greater than the diode conduction voltage drop, the diode is turned on, the logic gate circuit outputs 4.8V high level, and the function of the logic AND gate circuit is realized, as shown in Figure 4

[0035] Embodiment 2

[0036] The implementation method of the multi-coil driven magneto-electric logic OR gate circuit in this example includes the following steps:

[0037] S1, select the prepared magneto-electric sensor, Helmholtz coil, electromagnet, dynamic analyzer and current sensor, the Helmholtz coil provides an alternating magnetic field, the electromagnet provides a direct current bias magnetic field, the dynamic analyzer is used as an alternating current output source and a magneto-electric coefficient measuring instrument, and the current sensor is used for monitoring the alternating current size. The output end of the dynamic analyzer is connected to the Helmholtz coil to provide an alternating magnetic field, the magneto-electric sensor is placed in the middle of the Helmholtz coil, and the output end is connected to the input end of the dynamic analyzer. The size of the direct current magnetic field provided by the electromagnet is continuously changed, the size of the voltage signal output by the magneto-electric sensor at this time is measured, and the magneto-electric coefficient of the magneto-electric sensor under different direct current bias magnetic fields is calculated to obtain the magneto-electric coefficient of the optimal bias point, which is 9.8V / Oe.

[0038] S2, the output from the magneto-electric sensor 100 is connected to the rectifier module 104 and the filter capacitor 105, and the solenoid coil is wound as two input ends of the logic gate circuit. The direct current output end after rectification and filtering is used as the output end of the logic gate circuit. Adjust the frequency of the alternating magnetic field to the resonant frequency of the magneto-electric sensor, and keep the alternating magnetic field size as 0.5Oe, at this time, the output end of the logic gate circuit is 0V, which belongs to low level.

[0039] S3, according to steps S1 and S2, the input signal directions of the direct current bias coils 102 and 103 are selected as the same direction. 5.3V high level signal is input to the direct current bias coil 1, which is 3 / 4 of the optimal bias point voltage value, and 0V low level signal is input to the direct current bias coil 2, at this time, the output voltage of the magneto-electric sensor is greater than the diode conduction voltage drop, the diode is turned on, and the logic gate circuit outputs 1.6V high level; 0V low level signal is input to the direct current bias coil 1, and 5.1V high level signal is input to the direct current bias coil 2, which is 3 / 4 of the optimal bias point voltage value, at this time, the output voltage of the magneto-electric sensor is greater than the diode conduction voltage drop, the diode is turned on, and the logic gate circuit outputs 1.4V high level.

[0040] ​S4, input 5.3V high level signal to DC bias coil 1, input 5.1V high level signal to DC bias coil 2, at this time, the working point of the magneto-electric sensor exceeds the optimal DC bias point, the output voltage is greater than the diode conduction voltage drop, the diode is turned on, the logic gate circuit outputs 1.6V high level, realizing the function of the logic OR gate circuit, as shown in Figure 5

[0041] Example 3

[0042] The implementation method of the multi-coil driven magneto-electric logic OR gate circuit in this example includes the following steps:

[0043] S1, select the prepared magneto-electric sensor, Helmholtz coil, electromagnet, dynamic analyzer and current sensor, the Helmholtz coil provides an alternating magnetic field, the electromagnet provides a DC bias magnetic field, the dynamic analyzer is used as an alternating current output source and a magneto-electric coefficient measuring instrument, and the current sensor is used to monitor the alternating current size. The output end of the dynamic analyzer is connected to the Helmholtz coil to provide an alternating magnetic field, the magneto-electric sensor is placed in the middle of the Helmholtz coil, and the output end is connected to the input end of the dynamic analyzer. The size of the output voltage signal of the magneto-electric sensor is measured by continuously changing the size of the DC magnetic field provided by the electromagnet. The magneto-electric coefficient of the magneto-electric sensor under different DC bias magnetic fields is calculated to obtain the optimal bias point. The magneto-electric coefficient of the optimal bias point is 9.8V / Oe.

[0044] S2, the output from the magneto-electric sensor 100 is connected to the rectifier module 104 and the filter capacitor 105, and the solenoid coil is wound as two input ends of the logic gate circuit. The DC output end after rectification and filtering is used as the output end of the logic gate circuit. Adjust the frequency of the alternating magnetic field to the resonant frequency of the magneto-electric sensor, and keep the size of the alternating magnetic field at about 0.5Oe. At this time, the output end of the logic gate circuit is 0V, belonging to low level.

[0045] S3, according to the above steps S1 and S2, the input signal direction of the DC bias coil 102 and 103 is selected as opposite direction. Input 7.4V high level signal to DC bias coil 1, the input is the optimal bias point voltage value, input 0V low level signal to DC bias coil 2, at this time, the output voltage of the magneto-electric sensor is greater than the diode conduction voltage drop, the diode is turned on, the logic gate circuit outputs 4.9V high level; input 0V low level signal to DC bias coil 1, input 8.6V high level signal to DC bias coil 2, the input is the optimal bias point voltage value, at this time, the output voltage of the magneto-electric sensor is greater than the diode conduction voltage drop, the diode is turned on, the logic gate circuit outputs 4.2V high level.

[0046] ​S6, the DC bias coil 1 input 7.4V high level signal, DC bias coil 2 input 8.6V high level signal, due to the two DC coil reverse, at this time the DC bias magnetic field is approximately zero, the output voltage is less than the diode conduction voltage drop, logic gate circuit output 0V low level, realize the function of logic XOR gate circuit, as shown in Figure 6 .

[0047] The above-described specific embodiments are the preferred embodiments of the present application, and are not intended to limit the specific implementation range of the present application. The scope of the present application includes, but is not limited to, the specific embodiments. Any equivalent changes made in accordance with the present application are within the scope of the present application.

Claims

1. A magnetoelectric logic gate circuit based on multi-coil drive, characterized in that: The system includes a magnetic field excitation element, a magnetoelectric induction element, and a subsequent rectifier module. The magnetic field excitation element comprises an AC magnetic field excitation element and two DC magnetic field excitation elements. The AC magnetic field excitation element outputs an AC magnetic field to generate a magnetoelectric coupling effect in the magnetoelectric induction element. The two DC magnetic field excitation elements provide a DC magnetic field to the magnetoelectric induction element. The input terminals of the two DC magnetic field excitation elements serve as the two input terminals of a magnetoelectric logic gate circuit. The output terminal of the magnetoelectric induction element is connected to the input terminal of the subsequent rectifier module. The output terminal of the subsequent rectifier module outputs a DC voltage, which serves as the output terminal of the magnetoelectric logic gate circuit. The implementation method of the magnetoelectric logic gate circuit includes the following steps: S1: Apply an alternating magnetic field with a frequency equal to the resonant frequency of the magnetoelectric induction element. At this time, the output of the subsequent rectifier module is 0V, which is a low level. S2: While maintaining the AC magnetic field frequency at the resonant frequency, a DC magnetic field is provided, the optimal bias point of the magnetoelectric induction element is determined, and the input voltage signal is determined to be high or low based on the value of the optimal bias point. S3: Keep the AC magnetic field frequency at the resonant frequency, set the input voltage signals of the two DC magnetic field excitation elements to be in the same direction or opposite direction, apply input voltage signals of different amplitudes to the two DC magnetic field excitation elements respectively, and design different logic gate circuits by different signal directions and input signal magnitudes.

2. The magnetoelectric logic gate circuit based on multi-coil drive according to claim 1, characterized in that: The magnetic field excitation element consists of three solenoid coils wound around the outside of the magnetoelectric induction element, including two DC bias coils and one AC coil.

3. The magnetoelectric logic gate circuit based on multi-coil drive according to claim 2, characterized in that: The magnetoelectric sensing element is a magnetoelectric sensor, comprising upper and lower piezomagnetic elements and a piezoelectric element disposed between the two piezomagnetic elements. Electrodes are led out from the surfaces of the upper and lower piezomagnetic elements and connected to the two input terminals of the subsequent rectifier and filter module.

4. The magnetoelectric logic gate circuit based on multi-coil drive according to claim 3, characterized in that: The subsequent rectifier and filter module includes a rectifier, the two input terminals of which are respectively connected to the two output terminals of the magnetoelectric sensor, and the two output terminals of the rectifier output DC voltage.

5. The magnetoelectric logic gate circuit based on multi-coil drive according to claim 4, characterized in that: It also includes a filter capacitor, the two ends of which are connected in parallel to the output terminal of the rectifier.

6. The magnetoelectric logic gate circuit based on multi-coil drive according to any one of claims 1-5, characterized in that: The alternating magnetic field is provided by passing alternating current through an alternating coil, and the direct current magnetic field is provided by input voltage signals to two direct current bias coils.

7. The magnetoelectric logic gate circuit based on multi-coil drive according to claim 6, characterized in that: When two DC bias coils are input with voltage signals in the same direction, if both DC bias coils are input with a low level, the magnetoelectric sensor output cannot drive the subsequent rectifier module to rectify, and outputs a low level. If one DC bias coil is input with half of its optimal bias point voltage value (high level) and the other DC bias coil is input with a low level, the magnetoelectric sensor output cannot drive the subsequent rectifier module to rectify, and outputs a low level. If both DC bias coils are input with half of their optimal bias point voltage value (high level), the magnetoelectric sensor outputs a sufficient voltage to drive the subsequent rectifier module to rectify, and outputs a high level. This process is implemented using an AND gate.

8. The magnetoelectric logic gate circuit based on multi-coil drive according to claim 6, characterized in that: When two DC bias coils are input with voltage signals in the same direction, if both DC bias coils are input at a low level, the magnetoelectric sensing element cannot drive the subsequent rectifier module to rectify, and outputs a low level. If one DC bias coil is input at 3 / 4 of its optimal bias point voltage value (high level) and the other DC bias coil is input at a low level, the magnetoelectric sensing element can drive the subsequent rectifier module to rectify, and outputs a high level. If both DC bias coils are input at 3 / 4 of their optimal bias point voltage value (high level), the magnetoelectric sensing element output is sufficient to drive the subsequent rectifier module to rectify, and outputs a high level. This process is implemented using a logic OR gate.

9. The magnetoelectric logic gate circuit based on multi-coil drive according to claim 6, characterized in that: When a reverse voltage signal is input to two DC bias coils, if both DC bias coils are input at a low level, the magnetoelectric induction element cannot drive the subsequent rectifier module to rectify, and outputs a low level. If one DC bias coil is input with the optimal bias point voltage value (high level) and the other DC bias coil is input with a low level, the magnetoelectric induction element can drive the subsequent rectifier module to rectify, and outputs a high level. If both DC bias coils are input with the optimal bias point voltage value (high level), the magnetoelectric induction element cannot drive the subsequent rectifier module to rectify, and outputs a low level. This process is implemented using a logic XOR gate.

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