Solid state spin current sensor system and control method thereof

Abstract

The invention relates to a solid state spin current sensor system and a control method thereof. According to the solid-state spinning current sensor system, a lock-in amplifier receives and analyzes a control instruction issued by an upper computer, and outputs a parameter control instruction when the control instruction is the parameter control instruction; the current source module receives the parameter control instruction and drives the light path and probe module to emit light according to the parameter control instruction; the microwave system outputs a corresponding microwave signal according to the received parameter control instruction and transmits the microwave signal to the light path and probe module; the light path and probe module generates a corresponding electric signal according to the microwave signal in a light emitting state; when the control instruction is a data flow instruction, the lock-in amplifier receives the electric signal and a preset lookup table and generates one-to-one corresponding magnetic field measurement results to an upper computer, so that a user can acquire magnetic field parameters of a magnetic field to be measured in an environment where the solid-state spin current sensor system is located through the upper computer, and the magnetic field parameters are transmitted to the computer. And the performance and the resource consumption are considered.

Description

Technical Field

[0001] The present application relates to the technical field of solid-state spin current sensors, and in particular to a solid-state spin current sensor system and a control method thereof. Background Art

[0002] Solid-state spin is an important system in the emerging field of quantum precision measurement. Since electric current will generate a magnetic field equivalently, the solid-state spin magnetic sensor can be used to measure current.

[0003] In order to avoid errors in the solid-state spin magnetic sensor's current measurement caused by changes in position, edge current, temperature and other factors, multiple solid-state spin magnetic sensors are usually required to measure current. However, in the field of current measurement for industrial power grid scenarios, traditional technologies often use computers or FPGAs (Field Programmable Gate Arrays) as solid-state spin controllers, and both computers and FPGAs have the problem of wasting computing resources. Summary of the invention

[0004] Based on this, it is necessary to provide a solid-state spin current sensor system and a control method thereof that can reduce resource waste.

[0005] In a first aspect, a solid-state spin current sensor system is provided. The solid-state spin current sensor system is placed in a magnetic field to be measured, comprising:

[0006] A lock-in amplifier, wherein a first end of the lock-in amplifier is used to connect to a host computer to receive a control instruction sent by the host computer, and output a parameter control instruction when the control instruction is a parameter control instruction;

[0007] A microwave system, wherein the input and output ends of the microwave system are connected to the second end of the phase-locked amplifier, and the microwave system is used to receive and generate microwave signals according to parameter control instructions;

[0008] An optical path and a probe module, wherein a first input end of the optical path and the probe module is connected to an output end of the microwave system, and an output end of the optical path and the probe module is connected to an input end of a lock-in amplifier;

[0009] A current source module, wherein the input and output ends of the current source module are connected to the third end of the phase-locked amplifier, the output end of the current source module is connected to the second input end of the optical path and probe module, and the current source module is used to receive and drive the optical path and probe module to emit light according to the parameter control instruction, so that the optical path and probe module generate corresponding electrical signals according to the microwave signal in the light-emitting state;

[0010] The lock-in amplifier is also used to receive and generate a one-to-one corresponding magnetic field measurement result to the host computer based on the electrical signal and the preset lookup table when the control instruction is a data stream instruction.

[0011] In one embodiment, the microwave system comprises:

[0012] At least one microwave module, the input and output ends of each microwave module are connected to the second end of the phase-locked amplifier, and the output end of each microwave module is connected to the optical path and the first input end of the probe module; the microwave module is used to generate a microwave signal according to the parameter control instruction;

[0013] The number of microwave modules is the same as the number of microwave signals.

[0014] In one embodiment, when a plurality of microwave signals are generated, the frequencies of the microwave signals are different.

[0015] In one embodiment, the optical path and probe module includes:

[0016] A light source, providing a laser beam;

[0017] At least one diamond sensitive unit probe, each diamond sensitive unit probe is used to receive the laser beam, the input end of each diamond sensitive unit probe is connected to the output end of the microwave module, and under the drive of the microwave signal, the laser beam is converted into a fluorescent signal;

[0018] The signal conversion module receives the fluorescent signal projected by each diamond sensitive unit probe, and is used to convert the fluorescent signal into an electrical signal.

[0019] In one embodiment, the current source module is further used to provide current to the coils in each diamond sensitive unit probe.

[0020] In one embodiment, the lock-in amplifier comprises:

[0021] A signal processing module, the input end of the signal processing module is connected to the output end of the signal conversion module; the signal processing module is used to amplify and filter the electrical signal;

[0022] An analog-to-digital conversion module, the input end of which is connected to the output end of the signal processing module; the analog-to-digital conversion module is used to convert an electrical signal into a digital signal;

[0023] A controller, wherein the input end of the controller is connected to the output end of the analog-to-digital conversion module, the first end of the controller is used to connect to the host computer, the second end of the controller is respectively connected to the input and output ends of each microwave module, and the third end of the controller is connected to the input and output ends of the current source module;

[0024] The controller is used to receive control instructions and, when the control instructions are parameter control instructions, output parameter control instructions; when the control instructions are data stream instructions, receive and generate one-to-one corresponding magnetic field measurement results to the host computer based on digital signals and a preset lookup table.

[0025] In one embodiment, the controller comprises:

[0026] A digital signal processing module, wherein the input end of the digital signal processing module is connected to the output end of the analog-to-digital conversion module; the digital signal processing module is used to receive and generate a one-to-one corresponding magnetic field measurement result according to the digital signal and the preset lookup table under the drive of the data stream instruction;

[0027] A filtering algorithm module, wherein the input end of the filtering algorithm module is connected to the output end of the digital signal processing module; the filtering algorithm module is used to receive each magnetic field measurement result and filter each magnetic field measurement result;

[0028] A communication module, wherein the input end of the communication module is connected to the output end of the filtering algorithm module, the first end of the communication module is used to connect to a host computer, the second end of the communication module is respectively connected to the input and output ends of each microwave module, and the third end of the communication module is connected to the input and output ends of the current source module; the communication module is used to receive and judge control instructions, and the communication module is also used to receive each magnetic field measurement result and transmit it to the host computer.

[0029] In one embodiment, the solid-state spin current sensor system further comprises:

[0030] The temperature control module is connected to the phase-locked amplifier; the temperature control module is used to obtain and perform temperature adjustment actions according to the actual temperature of the phase-locked amplifier when receiving a temperature control drive instruction.

[0031] In a second aspect, a control method for a solid-state spinning current sensor system is provided, the method comprising:

[0032] Receive control instructions from the host computer;

[0033] When the control instruction is a parameter control instruction, the parameter control instruction is outputted, so that the current source module receives and drives the optical path and the probe module to emit light according to the parameter control instruction, and the optical path and the probe module generate corresponding electrical signals according to the microwave signal in the light-emitting state;

[0034] When the control instruction is a data stream instruction, a one-to-one corresponding magnetic field measurement result is received and generated to the host computer according to the electrical signal and the preset lookup table.

[0035] In one embodiment, the method further comprises at least one of the following steps:

[0036] Based on the magnetic field measurement result, continuous spectrum measurement is performed to obtain spectrum measurement result;

[0037] Based on the magnetic field measurement results, the relationship between the laser and the fluorescence intensity is calibrated to obtain the fluorescence intensity calibration result;

[0038] Based on the magnetic field measurement result, the solid-state spin current sensor system response calibration is performed to obtain a response calibration result.

[0039] The solid-state spin current sensor system and its control method, the solid-state spin current sensor system includes a phase-locked amplifier, a microwave system, an optical path and probe module and a current source module, wherein the phase-locked amplifier receives and analyzes the control instruction issued by the host computer, and outputs the parameter control instruction when the control instruction is a parameter control instruction; the current source module receives and drives the optical path and probe module to emit light according to the parameter control instruction; the microwave system outputs a corresponding microwave signal according to the received parameter control instruction, and transmits it to the optical path and probe module; the optical path and probe module generates a corresponding electrical signal according to the above microwave signal in the emitting state; the phase-locked amplifier also receives and generates a one-to-one corresponding magnetic field measurement result to the host computer according to the above electrical signal and a preset lookup table when the control instruction is a data stream instruction, so that the user can obtain the magnetic field parameters of the magnetic field to be measured in the environment where the solid-state spin current sensor system is located through the host computer. Compared with traditional technologies, the phase-locked amplifier in this solid-state spin current sensor system takes on the task of generating magnetic field measurement results, greatly reducing the burden on the host computer. The phase-locked amplifier can also output high-precision magnetic field measurement results at low power consumption, reducing resource waste and improving the performance of the solid-state spin current sensor system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 is one of the structural block diagrams of a solid-state spinning current sensor system according to an embodiment;

[0042] Figure 2 The second structural block diagram of a solid-state spinning current sensor system according to an embodiment;

[0043] Figure 3 FIG. 4 is a flow chart of a control method of a solid-state spinning current sensor system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0046] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0047] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0048] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0049] In one embodiment, Figure 1 As shown, a solid-state spin current sensor system 10 is provided. The solid-state spin current sensor system 10 is placed in a magnetic field to be measured. The solid-state spin current sensor system 10 includes: a phase-locked amplifier 110, a microwave system 120, an optical path and probe module 130 and a current source module 140.

[0050] The first end of the phase-locked amplifier 110 is used to connect to the host computer 20 to receive the control instruction sent by the host computer 20, and output the parameter control instruction when the control instruction is a parameter control instruction.

[0051] The input and output ends of the microwave system 120 are connected to the second end of the phase-locked amplifier 110 , and the microwave system 120 is used to receive and generate microwave signals according to parameter control instructions.

[0052] The parameter control instruction carries the frequency, so the frequencies of the microwave signals generated according to different parameter control instructions are different.

[0053] The first input end of the optical path and probe module 130 is connected to the output end of the microwave system 120 , and the output end of the optical path and probe module 130 is connected to the input end of the lock-in amplifier 110 .

[0054] The input and output ends of the current source module 140 are connected to the third end of the phase-locked amplifier 110, and the output end of the current source module 140 is connected to the second input end of the optical path and probe module 130. The current source module 140 is used to receive and drive the optical path and probe module 130 to emit light according to parameter control instructions, so that the optical path and probe module 130 generates a corresponding electrical signal according to the microwave signal in the light-emitting state.

[0055] The parameter control instruction also carries the light intensity to drive the optical path and the probe module 130 to emit light of different intensities.

[0056] The lock-in amplifier 110 is also used to receive and generate a one-to-one corresponding magnetic field measurement result to the host computer 20 according to the electrical signal and the preset lookup table when the control instruction is a data stream instruction.

[0057] The preset lookup table is a mapping relationship table between electrical signals and theoretical magnetic field values. The preset lookup table stores different theoretical magnetic field values ​​corresponding to different electrical signals. Therefore, after multiplying and demodulating the obtained electrical signal and the preset lookup table, the magnetic field measurement result corresponding to the electrical signal can be obtained. Among them, the magnetic field measurement result includes data of dimensions such as magnetic field intensity and magnetic field direction.

[0058] In one embodiment, when the electric signal received by the lock-in amplifier 110 does not find exactly the same value in the preset lookup table, the magnetic field measurement result corresponding to the electric signal can be determined based on the interpolation method, wherein the interpolation method includes but is not limited to linear interpolation and polynomial interpolation.

[0059] Therefore, the solid-state spin current sensor system 10 includes a phase-locked amplifier 110, a microwave system 120, an optical path and probe module 130, and a current source module 140, wherein the phase-locked amplifier 110 receives and analyzes the control instruction issued by the host computer 20, and outputs the parameter control instruction when the control instruction is a parameter control instruction; the current source module 140 receives and drives the optical path and probe module 130 to emit light according to the parameter control instruction; the microwave system 120 outputs a corresponding microwave signal according to the received parameter control instruction, and transmits it to the optical path and probe module 130; the optical path and probe module 130 generates a corresponding electrical signal according to the microwave signal in the light-emitting state; the phase-locked amplifier 110 also receives and generates a one-to-one corresponding magnetic field measurement result to the host computer 20 according to the above-mentioned electrical signal and a preset lookup table when the control instruction is a data stream instruction, so that the user can obtain the magnetic field parameters of the magnetic field to be measured in the environment where the solid-state spin current sensor system 10 is located through the host computer 20. Compared with the traditional technology, the phase-locked amplifier 110 of the solid-state spin current sensor system 10 undertakes the task of generating the magnetic field measurement results, which greatly reduces the burden of the host computer 20. In addition, the phase-locked amplifier 110 can also output high-precision magnetic field measurement results at low power consumption, reducing the waste of resources and improving the performance of the solid-state spin current sensor system 10.

[0060] In one embodiment, a power supply terminal of the lock-in amplifier 110 is connected to an output terminal of the power supply module 30 .

[0061] The power supply module 30 supplies power to the lock-in amplifier 110 and to the microwave system 120 , the optical path and probe module 130 and the current source module 140 via the lock-in amplifier 110 to provide a stable power signal, thereby maintaining the stable operation of the solid-state spin current sensor system 10 .

[0062] In one embodiment, the solid-state spin current sensor system 10 is placed in a magnetic field to be measured, and after the solid-state spin current sensor system 10 and the host computer 20 are powered on, the host computer 20 can issue a control instruction at the same time interval to detect in real time whether the magnetic field to be measured changes.

[0063] In one embodiment, Figure 2 As shown, the microwave system 120 includes at least one microwave module 122 .

[0064] The input and output ends of each microwave module 122 are connected to the second end of the phase-locked amplifier 110, and the output end of each microwave module 122 is connected to the optical path and the first input end of the probe module 130; the microwave module 122 is used to generate microwave signals according to parameter control instructions.

[0065] The number of the microwave modules 122 is the same as the number of the microwave signals.

[0066] In one embodiment, the host computer 20 may generate a parameter control instruction carrying a corresponding number of frequencies according to the number of microwave modules 122 , so that the plurality of microwave modules 122 can generate a unique corresponding microwave signal.

[0067] In one embodiment, microwave module 122 includes a frequency synthesizer and a power amplifier.

[0068] The input end of the frequency synthesizer is connected to the second end of the phase-locked amplifier 110 , the output end of the frequency synthesizer is connected to the input end of the power amplifier, and the output end of the power amplifier is connected to the optical path and the first input end of the probe module 130 .

[0069] The quality of microwave signals can be improved by frequency synthesizers and power amplifiers.

[0070] In one embodiment, when a plurality of microwave signals are generated, the frequencies of the microwave signals are different.

[0071] Multiple microwave signals of different frequencies can obtain an adjustable microwave frequency, thereby matching the ground state energy level difference of the solid-state spin current sensor system 10 to perform resonance control.

[0072] In one embodiment, Figure 2 As shown, the optical path and probe module 130 includes: a light source 132 , at least one diamond sensitive unit probe 134 and a signal conversion module 136 .

[0073] The light source 132 provides a laser beam (such as Figure 2 in S1).

[0074] Each diamond sensitive unit probe 134 is used to receive a laser beam, and the input end of each diamond sensitive unit probe 134 is connected to the output end of the microwave module 122, and under the drive of the microwave signal, the laser beam is converted into a fluorescent signal. The number of diamond sensitive unit probes 134 is the same as the number of microwave modules 122.

[0075] The signal conversion module 136 receives the fluorescence signal (such as Figure 2 In S2, the signal conversion module 136 is used to convert the fluorescent signal into an electrical signal.

[0076] Each diamond sensitive unit probe 134 is disposed in the optical path of the laser beam, so that each diamond sensitive unit probe 134 can receive the laser beam and convert the laser beam into a one-to-one corresponding fluorescence signal under the drive of each microwave signal.

[0077] A diamond sensitive unit probe 134 includes at least one diamond sensitive unit, one diamond sensitive unit is a channel, and the microwave signal is used to drive at least one axial nitrogen-vacancy color center in the diamond sensitive unit.

[0078] For example, the microwave system 120 includes four microwave modules 122, and a diamond sensitive unit probe 134 includes four diamond sensitive units. The microwave system 120 outputs four microwave signals with different frequencies to the four diamond sensitive units of each diamond sensitive unit probe 134. A microwave signal with one frequency can obtain four fluorescence signals with corresponding frequencies in one channel of the four diamond sensitive unit probes 134. Therefore, microwave signals with four frequencies can obtain sixteen fluorescence signals with corresponding frequencies in four channels of the four diamond sensitive unit probes 134. Therefore, the signal conversion module 136 can convert the above sixteen fluorescence signals into corresponding sixteen electrical signals. The electrical signals are related to the magnetic field to be measured.

[0079] In one embodiment, the signal conversion module 136 is further used to amplify the electrical signal to improve the quality of the electrical signal, thereby improving the detection reliability of the solid-state spinning current sensor system 10 .

[0080] The microwave frequency ranges from 2.6 to 3.2 GHz; the electrical signal may be a current signal, and the current signal is within the range of 0.1 to 1.5A.

[0081] In one embodiment, the current source module 140 is also used to provide current to the coil in each diamond sensitive unit probe 134 to generate a bias magnetic field to improve the detection accuracy of each diamond sensitive unit probe 134 .

[0082] In one embodiment, Figure 2 As shown, the lock-in amplifier 110 includes: a signal processing module 112 , an analog-to-digital conversion module 114 and a controller 116 .

[0083] The input end of the signal processing module 112 is connected to the output end of the signal conversion module 136 ; the signal processing module 112 is used to amplify and filter the electrical signal to improve the quality of the electrical signal, thereby improving the measurement accuracy of the solid-state spin current sensor system 10 .

[0084] The input end of the analog-to-digital conversion module 114 is connected to the output end of the signal processing module 112 ; the analog-to-digital conversion module 114 is used to convert the electrical signal into a digital signal to improve the anti-interference capability of the signal, thereby improving the reliability of the solid-state spinning current sensor system 10 .

[0085] The input end of the controller 116 is connected to the output end of the analog-to-digital conversion module 114, the first end of the controller 116 is used to connect to the host computer 20, the second end of the controller 116 is respectively connected to the input and output ends of each microwave module 122, and the third end of the controller 116 is connected to the input and output ends of the current source module 140.

[0086] The controller 116 is used to receive control instructions and output parameter control instructions when the control instructions are parameter control instructions; when the control instructions are data stream instructions, receive and generate a one-to-one corresponding magnetic field measurement result to the host computer 20 based on the digital signal and the preset lookup table.

[0087] When multiple fluorescent signals are generated, there are the same number of corresponding electrical signals, so the number of digital signals is the same as the number of fluorescent signals. Based on this, multiple magnetic field measurement results can be generated according to each digital signal and a preset lookup table, and the data of each dimension of the magnetic field to be measured can be determined by sorting these magnetic field measurement results.

[0088] In one embodiment, the signal processing module 112 includes a data packaging unit, a data parsing unit and a first data forwarding unit. The data packaging unit is an algorithm part that performs preliminary packaging processing on the electrical signal, the data parsing unit is an algorithm part that parses and demodulates the packaged electrical signal, and the first data forwarding unit is an algorithm part that transmits the processed electrical signal to the analog-to-digital conversion module 114. By parsing and demodulating the electrical signal, an electrical signal that can be understood by the analog-to-digital conversion module 114 can be obtained, and at the same time, the anti-interference ability of the electrical signal is improved.

[0089] Furthermore, a buffer mechanism may be integrated into the signal processing module 112 to cope with burst data flows during the transmission of electrical signals.

[0090] In one embodiment, Figure 2 As shown, the controller 116 includes: a digital signal processing module 1162 , a filtering algorithm module 1164 and a communication module 1166 .

[0091] The input end of the digital signal processing module 1162 is connected to the output end of the analog-to-digital conversion module 114; the digital signal processing module 1162 is used to receive and generate a one-to-one corresponding magnetic field measurement result according to the digital signal and the preset lookup table under the drive of the data stream instruction.

[0092] The input end of the filtering algorithm module 1164 is connected to the output end of the digital signal processing module 1162; the filtering algorithm module 1164 is used to receive each magnetic field measurement result and filter each magnetic field measurement result to reduce noise and unnecessary interference, thereby ensuring the accuracy of each magnetic field measurement result.

[0093] The filtering algorithm module 1164 can select a suitable filtering algorithm according to specific application requirements, such as a low-order filtering algorithm, a high-order filtering algorithm, a FIR (Finite Impulse Response) filtering algorithm, an IIR (Infinite Impulse Response) filtering algorithm, and the like.

[0094] In one embodiment, the filtering algorithm module 1164 includes an algorithm filtering unit and a second data forwarding unit, wherein the algorithm filtering unit is an algorithm part equipped with a filtering algorithm, and the second data forwarding unit is an algorithm part that outputs the filtered magnetic field measurement result.

[0095] The input end of the communication module 1166 is connected to the output end of the filtering algorithm module 1164, the first end of the communication module 1166 is used to connect to the host computer 20, the second end of the communication module 1166 is respectively connected to the input and output ends of each microwave module 122, and the third end of the communication module 1166 is connected to the input and output ends of the current source module 140; the communication module 1166 is used to receive and judge control instructions, and the communication module 1166 is also used to receive each magnetic field measurement result and transmit it to the host computer 20.

[0096] In one embodiment, the communication module 1166 can communicate with each microwave module 122 and the current source module 140 based on the SPI (Serial Peripheral Interface) protocol, thereby achieving high-speed transmission of parameter control instructions.

[0097] In one embodiment, the communication based on the SPI protocol includes an instruction sending unit and a status reading unit. The instruction sending unit is an algorithm part that sends parameter control instructions to the microwave system 120 and the current source module 140; the status reading unit is an algorithm part that obtains the status of the microwave system 120 and the current source module 140.

[0098] In one embodiment, the communication module 1166 and the host computer 20 can implement real-time communication based on USB (Universal Serial Bus), thereby improving the compatibility of the solid-state spinning current sensor system 10 .

[0099] In one embodiment, the USB-based communication includes a data uploading unit and an instruction forwarding unit, wherein the data uploading unit is an algorithm part for uploading the acquired magnetic field measurement results to the host computer 20, and the instruction forwarding unit is an algorithm part for parsing and identifying control instructions.

[0100] In one embodiment, the host computer 20 can obtain the filtering algorithm adopted by the filtering algorithm module 1164 via the communication module 1166, and can also obtain the sent control instructions and various parameters carried in the control instructions.

[0101] In one embodiment, Figure 2 As shown, the solid-state spin current sensor system 10 further includes a temperature control module 150 .

[0102] The temperature control module 150 is connected to the phase-locked amplifier 110; the temperature control module 150 is used to obtain and perform temperature adjustment actions according to the actual temperature of the phase-locked amplifier 110 when receiving a temperature control drive instruction, so as to ensure that the solid-state spin current sensor system 10 is in optimal operating performance.

[0103] The temperature control driving instruction may be sent to the lock-in amplifier 110 at the same time interval, or may be actively controlled by the operator to be sent to the lock-in amplifier 110 at any time after the solid-state spinning current sensor system 10 is powered on.

[0104] The temperature adjustment action can be understood as an adjustment action to maintain the temperature of the lock-in amplifier 110 below a preset temperature. Specifically, when the actual temperature obtained is higher than the preset temperature, a cooling operation is performed. The cooling operation can be achieved by turning on a fan, a liquid cooling cycle, or other modules that can achieve cooling.

[0105] In one embodiment, the solid-state spinning current sensor system 10 further includes: a clock management module.

[0106] The input end of the clock management module is used to access the input clock, and the output end of the clock management module is connected to the communication module 1166. The clock management module is used to receive and generate a working clock according to the input clock, and transmit the working clock to other modules in the solid-state spinning current sensor system 10 through the communication module 1166 to achieve complete synchronization of the clock.

[0107] In one embodiment, Figure 3 As shown, a control method for a solid-state spinning current sensor system is provided, the method comprising:

[0108] S302, receiving a control instruction sent by a host computer.

[0109] S304, when the control instruction is a parameter control instruction, output the parameter control instruction so that the current source module receives and drives the optical path and probe module to emit light according to the parameter control instruction, and enables the optical path and probe module to generate corresponding electrical signals according to the microwave signal output by the microwave system in the light-emitting state.

[0110] S306, when the control instruction is a data stream instruction, receiving and generating a one-to-one corresponding magnetic field measurement result to a host computer according to the electrical signal and a preset lookup table.

[0111] The control method can be installed in the phase-locked amplifier in the above-mentioned solid-state spin current sensor system, so that the phase-locked amplifier performs corresponding operations according to the received control instructions, thereby reducing the power consumption and cost of measuring the magnetic field to be measured; and the operator can obtain the control instructions matching the actual application requirements by adjusting the parameters in the control instructions, thereby reducing the debugging difficulty, saving time cost, and improving the efficiency of obtaining the magnetic field measurement results.

[0112] In one embodiment, if the received control instruction is neither a parameter control instruction nor a data flow instruction, continue to wait in the step of "receiving the control instruction issued by the upper computer" until it is determined that the control instruction is a parameter control instruction, or the control instruction is a data flow instruction, and then enter the corresponding step.

[0113] In one embodiment, the control method of the solid-state spinning current sensor system further comprises at least one of the following steps:

[0114] Based on the magnetic field measurement results, continuous spectrum measurement is performed to obtain spectrum measurement results.

[0115] Among them, the continuous spectrum measurement is to gradually adjust the wavelength of the laser beam by gradually adjusting the parameter control instructions, and then determine the spectrum measurement result of the solid-state spin current sensor system based on the intensity of the fluorescence signal recorded during the adjustment process. The spectrum measurement result can be a fluorescence spectrum. Therefore, the continuous spectrum measurement provides information about the emission characteristics of the fluorescence signal, which helps to understand the interaction between the solid-state spin current sensor system and the magnetic field to be measured.

[0116] Based on the magnetic field measurement results, the relationship between the laser and fluorescence intensity is calibrated to obtain the fluorescence intensity calibration result.

[0117] The calibration of the relationship between laser and fluorescence intensity is to measure the one-to-one corresponding fluorescence intensity under a known laser power, so that in the measurement process of the magnetic field to be measured, according to the intensity of the acquired fluorescence signal, the laser power carried in the parameter control instruction corresponding to the fluorescence signal, and the calibrated laser and fluorescence intensity relationship, determine whether the fluorescence signal is reliable, that is, the fluorescence intensity calibration result; if the fluorescence signal has a large deviation, it means that the solid-state spin current sensor system has a fault and needs to be repaired. Therefore, the self-check of the solid-state spin current sensor system can be realized according to the fluorescence intensity calibration result.

[0118] Based on the magnetic field measurement result, the solid-state spin current sensor system response calibration is performed to obtain a response calibration result.

[0119] Based on the solid-state spin current sensor system response calibration, the response can be corrected by a known external magnetic field. Specifically, when the external magnetic field is the magnetic field generated by the current coil, the corresponding response value can be determined according to the magnetic field of the current and the fluorescence signal generated by the solid-state spin current sensor system under the magnetic field. After obtaining the corresponding fluorescence signal in the magnetic field to be measured, the accuracy of the solid-state spin current sensor system response can be determined according to the magnetic field measurement result obtained by adjusting the fluorescence signal and the magnetic field result corresponding to the fluorescence signal in the response calibration.

[0120] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0121] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0122] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A solid-state spin current sensor system, characterized in that: The solid-state spin current sensor system is placed in a magnetic field to be measured, and comprises: A lock-in amplifier, wherein a first end of the lock-in amplifier is used to connect to a host computer to receive a control instruction issued by the host computer, and output the parameter control instruction when the control instruction is a parameter control instruction; A microwave system, wherein the input and output ends of the microwave system are connected to the second end of the lock-in amplifier, and the microwave system is used to receive and generate a microwave signal according to the parameter control instruction; An optical path and a probe module, wherein a first input end of the optical path and the probe module is connected to an output end of the microwave system, and an output end of the optical path and the probe module is connected to an input end of the lock-in amplifier; A current source module, wherein the input and output ends of the current source module are connected to the third end of the phase-locked amplifier, the output end of the current source module is connected to the second input end of the optical path and probe module, and the current source module is used to receive and drive the optical path and probe module to emit light according to the parameter control instruction, so that the optical path and probe module generates a corresponding electrical signal according to the microwave signal in the light-emitting state; The lock-in amplifier is also used to receive and generate a one-to-one corresponding magnetic field measurement result to the host computer according to the electrical signal and a preset lookup table when the control instruction is a data stream instruction.

2. The solid-state spin current sensor system according to claim 1, characterized in that: The microwave system comprises: At least one microwave module, the input and output ends of each microwave module are connected to the second end of the phase-locked amplifier, and the output end of each microwave module is connected to the optical path and the first input end of the probe module; the microwave module is used to generate the microwave signal according to the parameter control instruction; The number of the microwave modules is the same as the number of the microwave signals.

3. The solid-state spinning current sensor system according to claim 1, characterized in that: When a plurality of the microwave signals are generated, the frequencies of the microwave signals are different.

4. The solid-state spin current sensor system according to claim 2, characterized in that: The optical path and probe module include: A light source, providing a laser beam; At least one diamond sensitive unit probe, each of which is used to receive the laser beam, an input end of each of which is connected to an output end of the microwave module, and converts the laser beam into a fluorescent signal under the drive of the microwave signal; A signal conversion module receives the fluorescence signal projected by each diamond sensitive unit probe, and is used to convert the fluorescence signal into an electrical signal.

5. The solid-state spin current sensor system according to claim 4, characterized in that: The current source module is also used to provide current to the coils in each of the diamond sensitive unit probes.

6. The solid-state spinning current sensor system according to claim 4, characterized in that: The lock-in amplifier comprises: A signal processing module, the input end of which is connected to the output end of the signal conversion module; the signal processing module is used to amplify and filter the electrical signal; An analog-to-digital conversion module, the input end of which is connected to the output end of the signal processing module; the analog-to-digital conversion module is used to convert the electrical signal into a digital signal; A controller, wherein the input end of the controller is connected to the output end of the analog-to-digital conversion module, the first end of the controller is used to connect to the host computer, the second end of the controller is respectively connected to the input and output ends of each of the microwave modules, and the third end of the controller is connected to the input and output ends of the current source module; The controller is used to receive the control instruction and, when the control instruction is the parameter control instruction, output the parameter control instruction; when the control instruction is a data stream instruction, receive and generate a one-to-one corresponding magnetic field measurement result to the host computer based on the digital signal and the preset lookup table.

7. The solid-state spinning current sensor system according to claim 6, characterized in that: The controller comprises: A digital signal processing module, wherein the input end of the digital signal processing module is connected to the output end of the analog-to-digital conversion module; the digital signal processing module is used to receive and generate a one-to-one corresponding magnetic field measurement result according to the digital signal and the preset lookup table under the drive of the data stream instruction; A filtering algorithm module, wherein the input end of the filtering algorithm module is connected to the output end of the digital signal processing module; the filtering algorithm module is used to receive each of the magnetic field measurement results and filter each of the magnetic field measurement results; A communication module, wherein the input end of the communication module is connected to the output end of the filtering algorithm module, the first end of the communication module is used to connect to the host computer, the second end of the communication module is respectively connected to the input and output ends of each of the microwave modules, and the third end of the communication module is connected to the input and output ends of the current source module; the communication module is used to receive and judge the control instructions, and the communication module is also used to receive each of the magnetic field measurement results and transmit them to the host computer.

8. The solid-state spinning current sensor system according to claim 1, characterized in that: Also includes: A temperature control module, the temperature control module is connected to the lock-in amplifier; The temperature control module is used to obtain and perform temperature adjustment actions according to the actual temperature of the lock-in amplifier when receiving a temperature control driving instruction.

9. A control method for a solid-state spin current sensor system, characterized in that: The method comprises: Receive control instructions from the host computer; In the case where the control instruction is a parameter control instruction, the parameter control instruction is outputted, so that the current source module receives and drives the optical path and the probe module to emit light according to the parameter control instruction, and the optical path and the probe module generate corresponding electrical signals according to the microwave signal output by the microwave system in the light-emitting state; In the case where the control instruction is a data stream instruction, a one-to-one corresponding magnetic field measurement result is received and generated to the host computer according to the electrical signal and the preset lookup table.

10. The control method of the solid-state spinning current sensor system according to claim 9, characterized in that: Also includes at least one of the following steps: Based on the magnetic field measurement result, continuous spectrum measurement is performed to obtain spectrum measurement result; Based on the magnetic field measurement result, calibrate the relationship between laser and fluorescence intensity to obtain a fluorescence intensity calibration result; Based on the magnetic field measurement result, a solid-state spin current sensor system response calibration is performed to obtain a response calibration result.

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