Detection control device and terahertz spectrometer

Abstract

The present invention relates to a detection control device and a terahertz spectrometer. The detection control device comprises: a shell; a receiving cavity is formed in the shell; a main control circuit board is arranged in the receiving cavity; a detection control circuit of the terahertz spectrometer is integrated on the main control circuit board; each functional module circuit in the detection control circuit is arranged in a partition on the main control circuit board; and an interface panel; the interface panel is arranged in the receiving cavity; an interface is arranged on the interface panel; the interface is fixed on the shell; the interface is used to realize the connection between the detection control circuit and the functional equipment in the terahertz spectrometer. The detection control circuit of the terahertz spectrometer is integrated on the main control circuit board of the above-mentioned detection control device, thereby greatly improving the integration of the entire terahertz spectrometer, which is conducive to the miniaturization of the terahertz spectrometer and makes it suitable for different application scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of terahertz wave detection, and in particular to a detection control device and a terahertz spectrometer. Background Art

[0002] Terahertz (THz) waves refer to electromagnetic waves with a frequency between 0.1THz and 10THz. They have the characteristics of short wavelength, no ionizing radiation, rich spectral information, and the ability to identify material analogies and components. Therefore, terahertz technology has great application prospects in the fields of medicine, food, safety monitoring, and military. Traditional terahertz spectrometers are large in size and cannot be used in different application scenarios. Summary of the invention

[0003] Based on this, it is necessary to provide a detection control device and a terahertz spectrometer to address the problem of large size of traditional terahertz spectrometers.

[0004] A detection control device is used in a terahertz spectrometer; the detection control device comprises:

[0005] A housing; a receiving cavity is formed in the housing;

[0006] A main control circuit board is arranged in the accommodating cavity; a detection control circuit of the terahertz spectrometer is integrated on the main control circuit board; each functional module circuit in the detection control circuit is arranged in a partition on the main control circuit board; and

[0007] An interface panel; the interface panel is arranged in the accommodating cavity; an interface is arranged on the interface panel; the interface is fixed on the shell; the interface is used to realize the connection between the detection control circuit and the functional equipment in the terahertz spectrometer.

[0008] The detection control circuit of the terahertz spectrometer is integrated on the main control circuit board of the detection control device, thereby greatly improving the integration of the entire terahertz spectrometer, which is conducive to the miniaturization of the terahertz spectrometer and makes it suitable for different application scenarios. In addition, the functional modules in the detection control circuit are arranged in partitions on the main control circuit board, and the interference between them is small, thereby ensuring the normal operation of the entire detection control device.

[0009] In one of the embodiments, a connector is provided on the main control circuit board; a connector matching the connector on the main control circuit board is provided on the interface panel; and each functional module circuit on the main control circuit board is connected to each other or to a functional device in the terahertz spectrometer through the connector on the main control circuit board.

[0010] In one embodiment, the detection control circuit includes a laser control circuit, a data processing and acquisition circuit, a bias power supply generating circuit, a motor drive circuit and a control module circuit; the data processing and acquisition circuit and the laser control circuit are arranged on one side of the main control circuit board; the bias power supply generating circuit and the motor drive circuit are arranged on the side of the main control circuit board opposite to the side where the data processing and acquisition circuit is located; the control module circuit is arranged on one end of the main control circuit board away from the interface panel.

[0011] In one of the embodiments, the data processing and acquisition circuit includes a signal processing module circuit and a data acquisition module circuit connected in sequence; the signal processing module circuit includes a photoelectric conversion module circuit and a signal amplification module circuit connected in sequence; the data acquisition module circuit includes an anti-aliasing filter circuit and a data acquisition module connected in sequence; the anti-aliasing filter circuit is connected to the signal discharge module circuit; the signal processing module circuit is integrated in the first area of ​​the main control circuit board and is arranged close to one end of the interface panel; the data acquisition module circuit is integrated in the second area of ​​the main control circuit board; the first area and the second area are both located on one side of the main control circuit board and are spaced apart from each other; the laser control circuit is integrated in the third area of ​​the main control circuit board; the third area is arranged on the side of the second area away from the interface panel;

[0012] The interface panel is provided with a sensor signal input interface and a signal output interface; the sensor signal input interface is connected to the input end of the photoelectric conversion module circuit; the signal output interface is connected to the output end of the data acquisition module.

[0013] In one of the embodiments, the bias power supply generating circuit is arranged in the fourth area of ​​the main control circuit board; the fourth area is arranged opposite to the first area and is located on a side of the main control circuit board close to the interface panel; a bias power supply driving interface is also arranged on the interface panel; the bias power supply driving interface is connected to the input end of the bias power supply generating circuit.

[0014] In one embodiment, the motor drive circuit includes a fast scan motor control module circuit, a slow scan motor control module circuit and an imaging motor control module circuit; the fast scan motor control module circuit, the slow scan motor control module circuit and the imaging motor control module circuit are respectively arranged in the fifth area to the seventh area; the fifth area to the seventh area are all located on the same side as the fourth area and are arranged at intervals from each other; the interface panel is also provided with a fast scan motor interface, a grating scale interface, a slow scan motor interface and an imaging motor interface; the fast scan motor interface and the grating scale interface are connected to the fast scan motor control module circuit; the slow scan motor interface is connected to the slow scan motor control module circuit; the imaging motor interface is connected to the imaging motor control module circuit.

[0015] In one embodiment, the control module circuit includes a main control module circuit and a microprocessor circuit; the microprocessor circuit is arranged in the eighth area; the eighth area is arranged on the side of the third area away from the second area; the main control module circuit is arranged on an end of the main control circuit board away from the interface panel.

[0016] In one of the embodiments, a communication module circuit is also integrated on the main control circuit board; the communication module circuit and the main control module circuit are arranged on the same side; a communication module interface is also fixed on the shell; the communication module interface is arranged on the side of the shell opposite to the interface panel.

[0017] In one of the embodiments, the housing is a housing having a signal shielding function.

[0018] A terahertz spectrometer comprises a housing and various functional devices fixed in the housing. The terahertz spectrometer further comprises the detection control device as described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a detection control device in an embodiment;

[0020] Figure 2 for Figure 1 The structural schematic diagram of the detection control device shown in another viewing angle;

[0021] Figure 3 is a schematic diagram of the internal structure of a detection control device in an embodiment;

[0022] Figure 4 is a circuit block diagram of a detection control circuit integrated on a main control circuit board in one embodiment;

[0023] Figure 5 for Figure 1A schematic diagram of the structure of the interface panel in the illustrated embodiment;

[0024] Figure 6 for Figure 1 A circuit block diagram of the detection control circuit in the illustrated embodiment;

[0025] Figure 7 for Figure 1 A schematic diagram of the area division of the main control circuit board in the embodiment;

[0026] Figure 8 To adopt Figure 1 A time domain effect diagram of a terahertz spectrometer of the detection and control device in the illustrated embodiment;

[0027] Fig. 9 To adopt Figure 1 A frequency domain effect diagram of the terahertz spectrometer of the detection and control device in the illustrated embodiment. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] In the description of the present application, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, it should be noted that when an element is referred to as being "formed on another element", it may be directly connected to the other element or there may be a centered element at the same time. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element.

[0030] A spectrometer is a scientific instrument that decomposes light with complex components into spectral lines. The terahertz spectrometer in one embodiment includes a housing, various functional devices arranged in the housing, and a detection and control device arranged inside the housing. The housing is used to fix and protect the various functional devices in the terahertz spectrometer. It can be understood that different ports are arranged on the housing to realize the connection between the terahertz spectrometer and external devices.

[0031] In one embodiment, the housing has a waterproof design so that the terahertz spectrometer can work in different environments. Each functional device in the terahertz spectrometer refers to a device that can perform a corresponding function under circuit control, so that after interacting with each other, the functions required by the terahertz spectrometer are realized together. For example, the functional devices may include various motors, lasers, bias power supplies, imaging motor scanning module sample holders, etc.

[0032] Figure 1 FIG. 2 is a schematic diagram of the structure of a detection control device 200 in an embodiment. Figure 2 for Figure 1 The structure diagram of the detection control device 200 shown in FIG. 2 is shown in FIG. Figure 3 FIG. 2 is a schematic diagram of the internal structure of the detection control device 200 in an embodiment. Figure 1 to Figure 3 The detection control device 200 includes a housing 210, a main control circuit board 220 and an interface panel 230. A receiving cavity is formed in the housing 210. The main control circuit board 220 and the interface panel 230 are both arranged in the receiving cavity. The detection control circuit of the terahertz spectrometer is integrated on the main control circuit board 220. Each functional module circuit in the detection control circuit is arranged in a partition on the main control circuit board 220. The interface panel 230 is provided with a corresponding interface to realize the connection between the detection control circuit and the functional devices in the terahertz spectrometer.

[0033] The detection control circuit of the terahertz spectrometer is integrated on the main control circuit board 220 of the detection control device, thereby greatly improving the integration of the entire terahertz spectrometer, which is conducive to the miniaturization of the terahertz spectrometer and makes it suitable for different application scenarios. In addition, the functional modules in the detection control circuit are arranged in partitions on the main control circuit board 220, and the interference between them is small, thereby ensuring the normal operation of the entire detection control device.

[0034] In one embodiment, a connector 222 is provided on the main control circuit board 220, and a connector 232 matching the connector 222 is also provided on the interface panel 230. The connector 222 is connected to each functional module circuit on the main control circuit board 220, so that each functional module circuit can be connected to other functional module circuits through the connector 222, or connected to the functional device inside the terahertz spectrometer, so as to realize the control of each functional device. The connection between the functional module circuit and other circuits is realized through the connector 222, so that the wiring on the main control circuit board 220 will not be too complicated, and the mutual interference between the functional module circuits can be reduced. In addition, the use of the connector 222 and the connector 232 for connection can simplify the installation process and improve the maintenance efficiency. In one embodiment, the connector 222 and the connector 232 can be a PCB board-mounted docking socket, such as a 96PIN PCB board-mounted docking socket.

[0035] The circuit block diagram of the detection control circuit integrated on the main control circuit board 220 is as follows: Figure 4 See Figure 4 , the detection control circuit includes a bias power generation circuit 310, a laser control circuit 320, a motor drive circuit 330, a data processing and acquisition circuit 340 and a control module circuit 350. Among them, the output end of the bias power generation circuit 310 is connected to the input end of the data processing and acquisition circuit 340 to provide bias power to it. The laser control circuit 320 is used to control the laser in the terahertz spectrometer to control the laser to work and generate terahertz wave signals. The motor drive circuit 330 is used to control each corresponding motor in the terahertz spectrometer, so that the terahertz time domain signal generated by the laser can be collected by the data processing and acquisition circuit 340 and then displayed by the display device in the terahertz spectrometer. The control module circuit 350 is used to control each module, so as to realize the work control of the entire terahertz spectrometer. In the traditional terahertz spectrometer, the control module circuits are integrated in different functional devices, which leads to a low overall integration and cannot meet the development needs of miniaturization.

[0036] In this embodiment, the above detection control circuits are all integrated on the main control circuit board 220, which greatly improves the integration. Specifically, the data acquisition and processing circuit 340 and the laser control circuit 320 are arranged on one side of the main control circuit board 220, and the bias power generation circuit 310 and the motor drive circuit 340 are arranged on the side of the main control circuit board 220 opposite to the data acquisition and processing circuit 340, and are arranged at intervals from each other. The control circuit 350 is arranged on the end of the main control circuit board 220 away from the interface panel 230. By arranging each module circuit on the main control circuit board 220 in a partitioned manner, the interference between each module circuit integrated on the same main control circuit board 220 can be reduced, and the stability of the entire device can be improved. In addition, in this embodiment, the data acquisition and processing circuit 340, the motor drive circuit 340 and the bias power generation circuit 310 are arranged on different sides of the main control circuit board 220, which can reduce the interference of each functional module circuit on the data acquisition and processing circuit 340 and improve the accuracy of the data acquisition process. In one embodiment, the data acquisition and processing circuit 340 is disposed on one end of the main control circuit board 220 close to the interface panel 230. The interface panel 230 is provided with a sensor signal input interface 402 and a signal output interface 404, such as Figure 5As shown. The input end of the data acquisition and processing circuit 340 is connected to the sensor signal input interface 402 to receive the terahertz wave signal detected by the sensor. The signal output port 404 is used to receive the signal obtained by the data acquisition and processing circuit 340 and output it. Since the current of the terahertz wave signal transmitted by the sensor signal input interface 402 is small, usually a few nanoamperes, even a small interference will have a large impact on its results. In this embodiment, by setting the data processing and acquisition circuit 340 close to the end where the interface panel 230 is located, the path that the signal needs to pass from the interface to the completion of data acquisition can be shortened, avoiding the problem of interference from signals in other lines when the path is too long, thereby improving the accuracy of the acquisition. At the same time, setting the control module circuit 350 at the end away from the interface panel 230 can avoid the signal generated by the control module circuit 350 from interfering with other module circuits, further improving the stability of the device.

[0037] In one embodiment, the data processing and acquisition circuit 340 includes a photoelectric conversion module circuit, a signal amplification module circuit, an anti-aliasing filter circuit and a data acquisition module connected in sequence. Specifically, the photoelectric conversion module circuit includes a terahertz transmitting antenna 341, a terahertz receiving antenna 342, a reference signal processing module 343, a preamplifier module 344, a phase-locked amplifier module 345, an anti-aliasing filter circuit 346 and a data acquisition module 347, as shown in FIG. Figure 6 As shown. The terahertz transmitting antenna 341 is connected to the bias power generation circuit 310. The bias power generation circuit 310 is used to generate a bias power output to the terahertz transmitting antenna under the control of the control module circuit 350. In a specific embodiment, the DDS (Direct Digital Synthesizer) inside the control module circuit 350 generates a sine wave signal output, such as a high-voltage sine wave signal with an amplitude of ±40V as a bias power supply.

[0038] The terahertz receiving antenna 342 is used to receive the terahertz wave signal emitted by the terahertz transmitting antenna 342, and after photoelectric conversion, it is amplified by the preamplifier module 344 and output to the phase-locked amplifier module 345 after current / voltage conversion. The reference signal processing module 343 is used to generate a reference signal under the control of the control module circuit 350 and then output it to the phase-locked amplifier module 345 for demodulation. The phase-locked amplifier module 345 modulates and demodulates the amplified and converted signal and outputs it to the anti-aliasing filter circuit 346. The anti-aliasing filter circuit 346 filters the signal and outputs it to the data acquisition module 347 for data acquisition. Generally, the generation and detection of terahertz utilizes femtosecond laser to excite the semiconductor surface and utilizes the photoconductive emission and receiving mechanism for generation and detection. Among them, the terahertz photoconductive detector couples the terahertz electromagnetic wave through the photoconductive antenna on the semiconductor material to form a high-speed motion of carriers, thereby generating instantaneous current. Low temperature grown gallium arsenide (LT-GaAs) has a high electron migration rate and a fast electrical signal capture time, and the photoconductive dipole antenna formed has a strong signal-to-noise ratio, so it is widely used as a substrate material in terahertz wave photoconductive detectors. Therefore, the terahertz receiving end, that is, the terahertz receiving antenna generally uses a photoconductive antenna for reception, which will be accompanied by relatively large noise and interference signals, or the noise signal covers the signal. In this embodiment, by adding photoelectric conversion and anti-aliasing filtering processing in the signal processing and acquisition process, the signal-to-noise ratio of the entire terahertz spectrometer can be further improved.

[0039] In one embodiment, the control module circuit 350 includes a main control module circuit 352 and a microprocessor circuit 354. Among them, the control module circuit 350 is connected to each other module circuit, so as to control each module circuit. The microprocessor circuit 354 is also connected to the phase-locked amplifier module 345. The main control module circuit 352 communicates data with the ADC (analog-to-digital converter) in the data acquisition module 347 through the bus, collects data, and then transmits it to the external PC computer terminal 10 through the network. In one embodiment, the main control module circuit 352 is an FPGA module, and the microprocessor circuit 354 is an ARM module. Therefore, the control monitoring of the whole machine is completed by ARM and FPGA. In one embodiment, the state monitoring and parameter adjustment of the phase-locked amplifier module 345 are controlled by the ARM module.

[0040] In one embodiment, the detection control circuit further includes a network communication module 360. The network communication module 360 ​​is connected to the main control module circuit 352, thereby realizing data communication between the main control module circuit 352 and the external PC computer terminal 10. In this embodiment, a network communication interface 260 is also fixed on the main control circuit board 220. The network communication interface 260 is provided on a side of the housing 210 opposite to the side where the interface panel 230 is located.

[0041] In one embodiment, the motor drive circuit 340 includes a fast scan motor control module circuit 342, a slow scan motor control module circuit 344 and an imaging motor control module circuit 346. In this embodiment, the fast scan motor control module circuit 342, the slow scan motor control module circuit 344 and the imaging motor control module circuit 346 are all controlled by the main control module circuit 352. Specifically, the main control module circuit 252 controls the slow scan motor drive circuit to adjust the slow scan motor to move to an appropriate position. When the imaging motor scanning module sample home in the terahertz spectrometer is replaced with a projection or reflection module, the main control module circuit 352 automatically identifies and controls the slow scan motor to adjust the optical path to an appropriate position. The main control module circuit 352 is also used to control the fast motor control module circuit 342 to control the fast scan motor and the grating ruler, and control the imaging motor to scan along the coordinate axis, so that the terahertz time domain signal can be collected by the data processing and acquisition circuit 340. In this embodiment, the fast motor and the slow scan motor are both stepping motors. The scanning frequency of the fast motor is greater than the scanning frequency of the slow scan motor.

[0042] The main control circuit board 220 is integrated with the detection control circuit in any of the above embodiments. In one embodiment, the main control circuit board 220 includes a first area A1 to an eighth area A8 spaced apart from each other. Figure 7 As shown. In this embodiment, the terahertz transmitting antenna 341, the terahertz receiving antenna 342, the reference signal processing module 343, the preamplifier module 344 and the phase-locked amplifier module 345 are integrated as signal processing module circuits in the first area A1; the anti-aliasing filter circuit 346 and the data acquisition module 347 are integrated as data acquisition module circuits in the second area A2. The first area A1 and the second area A2 are arranged along one side of the main control circuit board 220, and the first area A1 is located at one end of the main control circuit board 220 close to the interface panel 230. The laser control circuit 330 is integrated in the third area A3 of the main control circuit board 220. The third area A3 is arranged on the side of the second area A2 away from the interface panel 230. At this time, a laser port 406 is formed on the interface panel 230. The laser port 406 is used to connect to the laser in the terahertz spectrometer to control the laser.

[0043] In one embodiment, the bias power supply generating circuit 310 is integrated in the fourth area A4 of the main control circuit board 220. The fourth area A4 is arranged opposite to the first area A1, and is also located at one end of the main control circuit board 220 close to the interface panel 230. Since the bias power supply generating circuit 310 is used to provide bias power to the terahertz transmitting antenna 341, it is also hoped that the path through which its output signal passes is the shortest, thereby reducing interference and improving the signal-to-noise ratio of the device. At this time, a bias power supply driving interface 408 is also provided on the interface panel 230. The bias power supply driving interface 408 is connected to the input end of the bias power supply generating circuit 310 and is used to connect to the bias power supply.

[0044] In one embodiment, the fast scan motor control module circuit 342, the scanning motor control module circuit 344 and the imaging motor control module circuit 346 are respectively integrated in the fifth area A5 to the seventh area A7. The fifth area A5 to the seventh area A7 are arranged on the side opposite to the first area A1, and are located on the side of the bias power supply generating circuit 310 away from the interface panel 230, so as to avoid the generated high current signal from causing greater interference to the weak current signal in the data processing and acquisition process. In one embodiment, the interface panel 230 is provided with a fast scan motor interface 410, a grating ruler interface 412, a slow scan motor interface 414 and an imaging motor interface 416 to realize the connection of each functional module circuit on the main control circuit board 220 with the corresponding functional device and control it. The microprocessor circuit 254 is integrated in the eighth area A8. The eighth area A8 is arranged on the side of the third area A3 away from the second area A2.

[0045] In one embodiment, a power interface 420 is also provided on the interface panel 230. The power interface 420 is used to connect to a power source, thereby providing an operating voltage to the entire detection control device 200. In this embodiment, a trigger signal output interface 218 is also provided on the interface panel 230. The trigger signal output interface 218 is used to receive a trigger signal output by the main control module circuit 252, and output it to the corresponding controlled device.

[0046] In one embodiment, the housing 210 is a housing with a signal shielding function, so as to shield the signal interference generated by various functional devices inside the terahertz spectrometer, thereby further improving the signal-to-noise ratio of the entire device.

[0047] To illustrate the advantages of the detection and control device in this embodiment, the detection and control device is set inside the terahertz spectrometer, and the terahertz spectrometer is tested as a whole. The time domain diagram obtained by the test is shown in FIG. Figure 8 As shown, the frequency domain diagram is Fig. 9 As shown. Figure 8 and Fig. 9It can be seen that the terahertz spectrometer using the detection and control device has an ideal signal-to-noise ratio. In addition, due to the high integration of the detection and control device, it is conducive to the miniaturization of the entire terahertz spectrometer.

[0048] 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.

[0049] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A detection control device, used in a terahertz spectrometer; characterized in that: The detection control device comprises: A housing; a receiving cavity is formed in the housing; A main control circuit board is arranged in the accommodating cavity; a detection control circuit of the terahertz spectrometer is integrated on the main control circuit board; each functional module circuit in the detection control circuit is arranged in a partition on the main control circuit board; and An interface panel; the interface panel is arranged in the accommodating cavity; an interface is arranged on the interface panel; the interface is fixed on the housing; the interface is used to realize the connection between the detection control circuit and the functional device in the terahertz spectrometer; The detection control circuit includes a laser control circuit, a data processing and acquisition circuit, a bias power supply generation circuit, a motor drive circuit and a control module circuit; the data processing and acquisition circuit and the laser control circuit are arranged on one side of the main control circuit board; the bias power supply generation circuit and the motor drive circuit are arranged on a side of the main control circuit board opposite to the side where the data processing and acquisition circuit is located; the control module circuit is arranged on an end of the main control circuit board away from the interface panel; The data processing and acquisition circuit is arranged on one end of the main control circuit board close to the interface panel; the data processing and acquisition circuit includes a signal processing module circuit and a data acquisition module circuit connected in sequence; the signal processing module circuit includes a photoelectric conversion module circuit and a signal amplification module circuit connected in sequence; the data acquisition module circuit includes an anti-aliasing filter circuit and a data acquisition module connected in sequence; the anti-aliasing filter circuit is connected to the signal amplification module circuit; the signal processing module circuit is integrated in the first area of ​​the main control circuit board and is arranged close to one end of the interface panel; the data acquisition module circuit is integrated in the second area of ​​the main control circuit board; the first area and the second area are both located on one side of the main control circuit board and are arranged at intervals from each other; the laser control circuit is integrated in the third area of ​​the main control circuit board; The third area is disposed on a side of the second area away from the interface panel; The interface panel is provided with a sensor signal input interface and a signal output interface; the sensor signal input interface is connected to the input end of the photoelectric conversion module circuit; the signal output interface is connected to the output end of the data acquisition module.

2. The detection control device according to claim 1, characterized in that: The main control circuit board is provided with a connector; the interface panel is provided with a connector matching the connector on the main control circuit board; each functional module circuit on the main control circuit board is connected to each other or to the functional device in the terahertz spectrometer through the connector on the main control circuit board.

3. The detection control device according to claim 2, characterized in that: Any of the connectors includes: a PCB-mounted docking socket.

4. The detection control device according to claim 3, characterized in that: The bias power supply generating circuit is arranged in the fourth area of ​​the main control circuit board; the fourth area is arranged opposite to the first area and is located on a side of the main control circuit board close to the interface panel; the interface panel is also provided with a bias power supply driving interface; The bias power driving interface is connected to the input end of the bias power generating circuit.

5. The detection control device according to claim 4, characterized in that: The motor drive circuit includes a fast scan motor control module circuit, a slow scan motor control module circuit and an imaging motor control module circuit; the fast scan motor control module circuit, the slow scan motor control module circuit and the imaging motor control module circuit are respectively arranged in the fifth area to the seventh area; the fifth area to the seventh area are all located on the same side as the fourth area and are arranged at intervals from each other; the interface panel is also provided with a fast scan motor interface, a grating scale interface, a slow scan motor interface and an imaging motor interface; the fast scan motor interface and the grating scale interface are connected to the fast scan motor control module circuit; the slow scan motor interface is connected to the slow scan motor control module circuit; the imaging motor interface is connected to the imaging motor control module circuit.

6. The detection control device according to claim 3, characterized in that: The control module circuit includes a main control module circuit and a microprocessor circuit; the microprocessor circuit is arranged in the eighth area; the eighth area is arranged on a side of the third area away from the second area; the main control module circuit is arranged on an end of the main control circuit board away from the interface panel.

7. The detection control device according to claim 6, characterized in that: A communication module circuit is also integrated on the main control circuit board; the communication module circuit and the main control module circuit are arranged on the same side; a communication module interface is also fixed on the shell; the communication module interface is arranged on the side of the shell opposite to the interface panel.

8. The detection control device according to claim 1, characterized in that: The shell is a shell with a signal shielding function.

9. A terahertz spectrometer, comprising a housing and various functional devices fixed in the housing, characterized in that: The terahertz spectrometer further comprises a detection control device as claimed in any one of claims 1 to 8.

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