Multi-channel atom magnetometer control system

Abstract

A multi-channel atom magnetometer control system comprises a communication control sub-module, a communication control main module, a sensor control sub-module and an atom magnetometer module. The communication control main module comprises a switch circuit unit, a clock crystal oscillator unit and a stabilized power supply circuit unit, and is connected with the Ethernet communication units in the plurality of communication control sub-modules through golden finger parts, and the Ethernet communication units are connected with and control the sensor control sub-modules and the atomic magnetometer modules through the main control chip; through the Ethernet communication unit, more reliable and faster transmission of data and instructions between the atom magnetometer and an upper computer is realized, different network ports can be automatically switched and configured flexibly according to the requirements of different network devices, integration of a multichannel atom magnetometer communication control system is realized, and the communication control system is convenient to use. The atom magnetometers of multiple channels can synchronously control communication.

Description

Technical Field

[0001] The invention relates to a communication control system of a multi-channel atomic magnetometer, and belongs to the field of atomic magnetometer integration based on small lasers. Background Art

[0002] In recent years, with the continuous improvement of the sensitivity of atomic magnetometers, and the continuous development of miniaturization and integration, atomic magnetometers have been widely used in biomedicine, military and other fields, attracting great attention from researchers at home and abroad. The communication and control between the multi-channel atomic magnetometer and the host computer is one of the key factors in the integration of atomic magnetometers. The communication control system of the atomic magnetometer needs to collect the temperature and magnetic field of the atomic gas chamber in real time, adjust the control parameters of the heating coil according to the temperature, and transmit the temperature and magnetic field data to the host computer for storage and analysis in real time. At present, the commonly used data communication methods include USART serial port, SPI, Ethernet, etc. Among them, Ethernet communication has the characteristics of high speed, flexibility, and scalability compared with other communication methods. It can flexibly switch and configure different network ports according to the needs of different network devices. Applying it in the control system of the atomic magnetometer is helpful to realize the further integration of the atomic magnetometer. Therefore, through Ethernet communication technology, multiple atomic strong magnetometers are connected in parallel to realize high-speed communication and control of multiple atomic magnetometers of the host computer, which is of great significance to improving the integration of atomic magnetometers. Summary of the invention

[0003] In view of the above problems, the present invention proposes a multi-channel atomic magnetometer control system. The design concept is to connect a communication control main module to multiple communication control sub-modules through Ethernet communication technology, so as to realize high-speed transmission of data and instructions between the host computer and the multi-channel atomic magnetometer, and further integrate the communication control system of the multi-channel atomic magnetometer.

[0004] A multi-channel atomic magnetometer control system includes a communication control main module, a communication control submodule, a sensor control submodule and an atomic magnetometer module;

[0005] The communication control main module includes a switch circuit unit 1, a clock crystal unit 2 and a voltage-stabilized power supply circuit unit 3; the communication control submodule is provided with an Ethernet communication unit 4 and a main control chip 5; the switch circuit unit 1 is connected to the Ethernet communication units 4 in several communication control submodules, and the Ethernet communication unit 4 is used to realize the transmission of data and instructions between the communication control main module and the communication control submodule; the Ethernet communication unit 4 is connected to the main control chip 5 of the communication control submodule;

[0006] The sensor control submodule is provided with a heating control unit 9 and a laser control unit 10, and the main control chip 5 is connected to the heating control unit 9 and the laser control unit 10;

[0007] The atomic strong magnetometer module is provided with a heating unit 11 and a laser unit 13, wherein the heating control unit 9 is connected to the heating unit 11, and the heating unit 11 is closely attached to the surface of an atomic gas chamber 12, thereby heating the atomic gas chamber 12; the temperature sensing unit 14 is connected to the heating unit 11, and is used to collect the temperature value of the heating unit 11;

[0008] The laser control unit 10 is connected to the laser unit 13, and the laser unit 13 is connected to the atomic gas chamber 12; the photoelectric sensor unit 15 is connected to the laser unit 13, and converts the optical signal output after the atomic gas chamber 12 and the laser unit 13 act into an electrical signal;

[0009] The communication control submodule is provided with an A / D conversion unit 8, a digital signal processing unit 7 and a D / A conversion unit 6;

[0010] The temperature sensing unit 14 and the photoelectric sensing unit 15 are connected to the A / D conversion unit 8 in the communication control submodule, and the A / D conversion unit 8 converts the electrical signal into a digital signal;

[0011] The digital signal processing unit 7 is connected to the A / D conversion unit 8, and performs phase-locked amplification processing on the digital value of the collected data according to the written digital signal processing program to improve the signal-to-noise ratio of the signal;

[0012] The D / A conversion unit 6 is connected to the digital signal processing unit 7 and is used to convert the digital value of the data after the phase-locked amplification process into an analog value and send it to the main control chip 5 .

[0013] More specifically, the switch circuit unit 1, the clock crystal oscillator unit 2 and the voltage-stabilized power supply circuit unit 3 are all connected to the Ethernet communication interface 41 on the Ethernet communication unit 4 through the gold finger interface 16; the gold finger interface 16 is composed of a number of side-by-side conductive contacts, and the conductive contact material is a gold-plated copper plate, which can increase the contact area of ​​the interface, thereby reducing the contact resistance and improving the signal transmission efficiency.

[0014] More specifically, the switch circuit unit 1 of the communication control main module can be connected to the Ethernet communication units 4 in fifteen communication control sub-modules.

[0015] More specifically, the network interface data link layer of the Ethernet communication unit 4 includes a physical layer PHY chip, and a data link layer MAC core is provided in the main control chip 5. The physical layer PHY chip is connected to the data link layer MAC core via an RMII media interface.

[0016] More specifically, the network layer of the Ethernet communication unit 4 adopts the DHCP protocol to dynamically allocate IP addresses according to the MAC addresses of the main control chips 5 of each communication control submodule; the network layer of the Ethernet communication unit 4 adopts the IPv4 protocol, ICMP protocol, and ARP protocol to implement the addressing of the MAC address and IP address of each main control chip 5, and to fragment, reassemble, and process packet loss of data packets.

[0017] More specifically, the transport layer of the Ethernet communication unit 4 uses the TCP transport protocol to establish a reliable communication connection.

[0018] More specifically, the application layer and transport layer of the Ethernet communication unit 4 are connected using a Socket interface, and the application layer is presented in the host computer as a communication control interface of the atomic magnetometer; the atomic magnetometer communication control interface can set parameters such as the atomic magnetometer temperature, laser wavelength, and laser power.

[0019] More specifically, the main control chip 5 adopts an STM32 chip, and the heating control unit 9 and the laser control unit 10 are controlled to work normally by writing a main control program into the STM32.

[0020] The use of the multi-channel atomic magnetometer control system includes the following steps:

[0021] (1) An external staff member sets the temperature of the atomic gas chamber 12, the laser wavelength, the power and other parameters in the atomic strong magnetometer communication control interface of the host computer, and transmits the set parameters to the switch circuit unit 1;

[0022] (2) the switch circuit unit 1 is connected to the Ethernet communication unit 4 at the data link layer, and transmits the set parameter value to the Ethernet communication unit 4;

[0023] (3) The Ethernet communication unit 4 transmits the set parameter value to the main control chip 5;

[0024] (4) The main control chip 5 controls the heating control unit 9 to drive the heating unit 11 to heat, and controls the laser control unit 10 to drive the laser unit 13 to emit laser according to the received parameter data.

[0025] (5) The temperature sensing unit 14 collects the temperature of the heating unit 11 on the surface of the atomic gas chamber 12 in real time, and the photoelectric sensing unit 15 collects the data of the laser unit 13 in real time and sends the collected data to the A / D conversion unit 8;

[0026] (6) The A / D conversion unit 8 converts the data digital value into an analog value and sends the data digital value to the digital signal processing unit 7;

[0027] (7) The digital signal processing unit 7 improves the signal-to-noise ratio of the collected signal through phase-locked amplification and sends the processed data to the D / A conversion unit 6;

[0028] (8) The D / A conversion unit 6 converts the digital value of the data into an analog value and sends it to the main control chip 5;

[0029] (9) According to the main control program written into the main control chip 5, the main control chip 5 controls the Ethernet communication unit 4 to send data;

[0030] (10) The Ethernet communication unit 4 performs data transmission with the switch circuit unit 1 at the data link layer, and the switch circuit unit 1 sends the data to the host computer.

[0031] The beneficial effects of the present invention are: data and instructions between the atomic magnetometer and the host computer can be transmitted more reliably and faster through the Ethernet communication unit 4, and different network ports can be automatically switched and configured according to the needs of different network devices. In addition, a single communication control main module can be connected to fifteen communication control submodules, and a single communication control submodule can control two atomic magnetometer modules by connecting two sensor control submodules, thereby realizing the integration of a multi-channel atomic magnetometer communication control system, and atomic magnetometers of multiple channels can synchronously control communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of a multi-channel atomic magnetometer control system.

[0033] Figure 2 It is the communication control module and the communication control submodule DETAILED DESCRIPTION

[0034] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0035] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] The present invention will be described in detail below in conjunction with exemplary embodiments with reference to the accompanying drawings.

[0041] according to Figure 1 , a multi-channel atomic magnetometer control system includes a communication control main module, a communication control submodule, a sensor control submodule and an atomic magnetometer module;

[0042] The communication control main module includes a switch circuit unit 1, a clock crystal unit 2 and a voltage-stabilized power supply circuit unit 3; the communication control submodule is provided with an Ethernet communication unit 4 and a main control chip 5; the switch circuit unit 1 is connected to the Ethernet communication units 4 in several communication control submodules, and the Ethernet communication unit 4 is used to realize the transmission of data and instructions between the communication control main module and the communication control submodule; the Ethernet communication unit 4 is connected to the main control chip 5 of the communication control submodule;

[0043] The sensor control submodule is provided with a heating control unit 9 and a laser control unit 10, and the main control chip 5 is connected to the heating control unit 9 and the laser control unit 10;

[0044] The atomic strong magnetometer module is provided with a heating unit 11 and a laser unit 13, wherein the heating control unit 9 is connected to the heating unit 11, and the heating unit 11 is closely attached to the surface of an atomic gas chamber 12, thereby heating the atomic gas chamber 12; the temperature sensing unit 14 is connected to the heating unit 11, and is used to collect the temperature value of the heating unit 11;

[0045] The laser control unit 10 is connected to the laser unit 13, and the laser unit 13 is connected to the atomic gas chamber 12; the photoelectric sensor unit 15 is connected to the laser unit 13, and converts the optical signal output after the atomic gas chamber 12 and the laser unit 13 act into an electrical signal;

[0046] The communication control submodule is provided with an A / D conversion unit 8, a digital signal processing unit 7 and a D / A conversion unit 6;

[0047] The temperature sensing unit 14 and the photoelectric sensing unit 15 are connected to the A / D conversion unit 8 in the communication control submodule, and the A / D conversion unit 8 converts the electrical signal into a digital signal;

[0048] The digital signal processing unit 7 is connected to the A / D conversion unit 8, and performs phase-locked amplification processing on the digital value of the collected data according to the written digital signal processing program to improve the signal-to-noise ratio of the signal;

[0049] The D / A conversion unit 6 is connected to the digital signal processing unit 7 and is used to convert the digital value of the data after the phase-locked amplification process into an analog value and send it to the main control chip 5 .

[0050] In some embodiments, reference Figure 2 The switch circuit unit 1, the clock crystal oscillator unit 2 and the voltage-stabilized power supply circuit unit 3 are all connected to the Ethernet communication interface 41 on the Ethernet communication unit 4 through the gold finger interface 16; the gold finger interface 16 is composed of a plurality of side-by-side conductive contacts, and the conductive contact material is a gold-plated copper plate, which can increase the contact area of ​​the interface, thereby reducing the contact resistance and improving the signal transmission efficiency.

[0051] In some embodiments, the switch circuit unit 1 of the communication control main module can be connected to the Ethernet communication units 4 in fifteen communication control sub-modules.

[0052] In some embodiments, the network interface data link layer of the Ethernet communication unit 4 includes a physical layer PHY chip, and the main control chip 5 is provided with a data link layer MAC core, and the physical layer PHY chip is connected to the data link layer MAC core through an RMII media interface.

[0053] In some embodiments, the network layer of the Ethernet communication unit 4 adopts the DHCP protocol to dynamically allocate IP addresses according to the MAC addresses of the main control chips 5 of each communication control submodule; the network layer of the Ethernet communication unit 4 adopts the IPv4 protocol, ICMP protocol, and ARP protocol to achieve addressing of the MAC addresses and IP addresses of each main control chip 5, and to fragment, reassemble, and process packet loss of data packets.

[0054] In some embodiments, the transport layer of the Ethernet communication unit 4 uses the TCP transport protocol to establish a reliable communication connection.

[0055] In some embodiments, the application layer and transport layer of the Ethernet communication unit 4 are connected using a Socket interface, and the application layer is presented in the host computer as a communication control interface of an atomic magnetometer; the atomic magnetometer communication control interface can set parameters such as the atomic magnetometer temperature, laser wavelength, and laser power.

[0056] In some embodiments, the main control chip 5 is an STM32 chip, and the heating control unit 9 and the laser control unit 10 are controlled to work normally by writing a main control program into the STM32.

[0057] The use of the multi-channel atomic magnetometer control system includes the following steps:

[0058] (1) An external staff member sets the temperature of the atomic gas chamber 12, the laser wavelength, the power and other parameters in the atomic strong magnetometer communication control interface of the host computer, and transmits the set parameters to the switch circuit unit 1;

[0059] (2) the switch circuit unit 1 is connected to the Ethernet communication unit 4 at the data link layer, and transmits the set parameter value to the Ethernet communication unit 4;

[0060] (3) The Ethernet communication unit 4 transmits the set parameter value to the main control chip 5;

[0061] (4) The main control chip 5 controls the heating control unit 9 to drive the heating unit 11 to heat, and controls the laser control unit 10 to drive the laser unit 13 to emit laser according to the received parameter data.

[0062] (5) The temperature sensing unit 14 collects the temperature of the heating unit 11 on the surface of the atomic gas chamber 12 in real time, and the photoelectric sensing unit 15 collects the data of the laser unit 13 in real time and sends the collected data to the A / D conversion unit 8;

[0063] (6) The A / D conversion unit 8 converts the data digital value into an analog value and sends the data digital value to the digital signal processing unit 7;

[0064] (7) The digital signal processing unit 7 improves the signal-to-noise ratio of the collected signal through phase-locked amplification and sends the processed data to the D / A conversion unit 6;

[0065] (8) The D / A conversion unit 6 converts the digital value of the data into an analog value and sends it to the main control chip 5;

[0066] (9) According to the main control program written into the main control chip 5, the main control chip 5 controls the Ethernet communication unit 4 to send data;

[0067] (10) The Ethernet communication unit 4 performs data transmission with the switch circuit unit 1 at the data link layer, and the switch circuit unit 1 sends the data to the host computer.

[0068] The beneficial effects of the present invention are: data and instructions between the atomic magnetometer and the host computer can be transmitted more reliably and faster through the Ethernet communication unit 4, and different network ports can be automatically switched and configured according to the needs of different network devices. In addition, a single communication control main module can be connected to fifteen communication control submodules, and a single communication control submodule can control two atomic magnetometer modules by connecting two sensor control submodules, thereby realizing the integration of a multi-channel atomic magnetometer communication control system, and atomic magnetometers of multiple channels can synchronously control communication.

Claims

1. A multi-channel atomic magnetometer control system, characterized in that: It includes a communication control submodule, a communication control main module, a sensor control submodule and an atomic strong magnetometer module; The communication control main module comprises a switch circuit unit (1), a clock crystal unit (2) and a voltage-stabilized power supply circuit unit (3); the communication control submodule is provided with an Ethernet communication unit (4) and a main control chip (5); the switch circuit unit (1) is connected to the Ethernet communication units (4) in a plurality of communication control submodules, and the Ethernet communication unit (4) is used to realize the transmission of data and instructions between the communication control main module and the communication control submodules; the Ethernet communication unit (4) is connected to the main control chip (5) of the communication control submodule; A heating control unit (9) and a laser control unit (10) are provided in the sensor control submodule, and a main control chip (5) is connected to the heating control unit (9) and the laser control unit (10); The atomic strong magnetometer module is provided with a heating unit (11) and a laser unit (13); the heating control unit (9) is connected to the heating unit (11); the heating unit (11) is in close contact with the surface of an atomic gas chamber (12), thereby heating the atomic gas chamber (12); the temperature sensing unit (14) is connected to the heating unit (11) and is used to collect the temperature value of the heating unit (11); The laser control unit (10) is connected to the laser unit (13), and the laser unit (13) is connected to the atomic gas chamber (12); the photoelectric sensor unit (15) is connected to the laser unit (13) to convert the optical signal output after the atomic gas chamber (12) and the laser unit (13) interact to an electrical signal; The communication control submodule is provided with an A / D conversion unit (8), a digital signal processing unit (7) and a D / A conversion unit (6); The temperature sensing unit (14) and the photoelectric sensing unit (15) are connected to an A / D conversion unit (8) in the communication control submodule, and the A / D conversion unit (8) converts the electrical signal into a digital signal; The digital signal processing unit (7) is connected to the A / D conversion unit (8) and performs phase-locked amplification processing on the digital value of the collected data according to the written digital signal processing program to improve the signal-to-noise ratio of the signal; The D / A conversion unit (6) is connected to the digital signal processing unit (7) and is used to convert the digital value of the data after the phase-locked amplification process into an analog value and send it to the main control chip (5).

2. A multi-channel atomic magnetometer control system according to claim 1, characterized in that: The switch circuit unit (1), the clock crystal oscillator unit (2) and the voltage-stabilized power supply circuit unit (3) are all connected to an Ethernet communication interface (41) on an Ethernet communication unit (4) via a gold finger interface (16); the gold finger interface (16) is composed of a plurality of conductive contact pieces arranged side by side, the conductive contact piece material being a gold-plated copper plate, which can increase the contact area of ​​the interface, thereby reducing contact resistance and improving signal transmission efficiency.

3. A multi-channel atomic magnetometer control system according to claim 1, characterized in that: The switch circuit unit (1) of the communication control main module can be connected to the Ethernet communication units (4) in fifteen communication control submodules.

4. A multi-channel atomic magnetometer control system according to claim 1, characterized in that: The network interface data link layer of the Ethernet communication unit (4) comprises a physical layer PHY chip, and a data link layer MAC core is arranged in the main control chip (5). The physical layer PHY chip is connected to the data link layer MAC core via an RMII media interface.

5. A multi-channel atomic magnetometer control system according to claim 1, characterized in that: The network layer of the Ethernet communication unit (4) adopts the DHCP protocol to dynamically allocate IP addresses according to the MAC addresses of the main control chips (5) of each communication control submodule; the network layer of the Ethernet communication unit (4) adopts the IPv4 protocol, the ICMP protocol, and the ARP protocol to achieve addressing of the MAC addresses and IP addresses of each main control chip (5), and to perform fragmentation, reassembly, and packet loss processing on data packets.

6. A multi-channel atomic magnetometer control system according to claim 1, characterized in that: The transport layer of the Ethernet communication unit (4) adopts the TCP transport protocol to establish a reliable communication connection.

7. A multi-channel atomic magnetometer control system according to claim 1, characterized in that: The application layer and the transport layer of the Ethernet communication unit (4) are connected using a Socket interface, and the application layer is presented in the host computer as a communication control interface of an atomic magnetometer; the atomic magnetometer communication control interface can set parameters such as atomic magnetometer temperature, laser wavelength, laser power, etc.

8. A multi-channel atomic magnetometer control system according to claim 1, characterized in that: The main control chip 5 adopts an STM32 chip, and controls the heating control unit (9) and the laser control unit (10) to work normally by writing a main control program into the STM32.

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