An uninterrupted measurement terahertz time-domain spectroscopy system transmission sample chamber

Abstract

The present invention discloses a transmission sample chamber for a terahertz time-domain spectroscopy system with uninterrupted measurement, which includes a transmitting optical path unit, a detecting optical path unit, a sample turntable, a sample turntable rotation motor and a sample chamber. The transmitting optical path unit and the detecting optical path unit are both placed in the sample chamber. A part of the sample turntable is placed inside the sample chamber, and the other part is hermetically passed through the sample chamber shell and placed outside the sample chamber. The sample turntable is placed in the middle position between the transmitting optical path unit and the detecting optical path unit. Sample fixing holes are uniformly arranged in the circumferential direction of the sample turntable. The sample turntable rotation motor is connected to the sample turntable to drive the sample turntable to rotate, so as to realize the conversion of the sample fixing holes inside and outside the sample chamber, and place the sample fixing holes containing the sample to be measured on the optical axis of the terahertz optical path formed by the transmitting optical path unit and the detecting optical path unit. Automatic sample injection is realized through the sample turntable rotation motor and the sample turntable. An air one-way valve is selected to control the air flow rate in and out of the sample chamber to ensure a constant pressure inside the chamber.

Description

Technical Field:

[0001] The present invention belongs to the technical field of terahertz time-domain spectroscopy and imaging, and particularly relates to a transmission sample chamber for a terahertz time-domain spectroscopy system with uninterrupted measurement. Background Art:

[0002] Terahertz technology is a popular research field that has emerged in the past decade. Terahertz waves are electromagnetic waves with frequencies between 0.1 - 10 THz (corresponding to wavelengths of 30 μm - 3 mm), which lie between microwaves and infrared rays on the electromagnetic spectrum diagram. Terahertz time-domain spectroscopy detection technology can detect subtle differences in the structure of substances, strongly respond to the low-frequency vibrations and resonances of the crystal lattice in crystals, and also has a very strong response to weak intermolecular forces such as dipole rotation, hydrogen bonding, vibrational transitions, and van der Waals forces between organic molecules. It can sensitively detect changes in isomers and enantiomers. Terahertz time-domain spectroscopy detection technology has excellent characteristics such as molecular specific recognition, high penetration of dielectric materials, and radiation safety. In addition, the detection principle of the terahertz time-domain spectroscopy system is synchronous coherent detection. Due to the insensitivity of synchronous coherent detection to thermal background noise, this system can provide a very high signal-to-noise ratio, especially in the frequency band below 4 THz, with a signal-to-noise ratio far exceeding that of near-infrared spectroscopy and mid-infrared spectroscopy. Therefore, the terahertz time-domain spectroscopy system is increasingly developing into an on-site in-situ, non-invasive, and automated detection technology means, making up for the technical deficiencies of existing infrared spectroscopy detection means, and can be used for rapid detection of substances such as drugs, hazardous chemicals, explosives, and biological macromolecules, having great application potential and demand in the field of automated detection.

[0003] The technical theory of terahertz technology is constantly being improved, research results are emerging continuously, and the application of terahertz wave technology is also becoming increasingly perfect. Water vapor absorbs terahertz waves very severely. During the sample measurement process in the sample chamber of a traditional terahertz time-domain spectroscopy system, it is necessary to evacuate and replace the gas in the sample chamber each time, resulting in a large amount of repetitive work and low test efficiency. The gas pressure and humidity in the sample chamber cannot be guaranteed to be uniform and consistent during two sample tests, which affects the experimental results.

[0004] This invention patent designs a design of a transmission sample chamber for a terahertz time-domain spectroscopy system with uninterrupted measurement and a sample injection method. The gas pressure in the sample chamber is a fixed positive pressure. Under the condition of ensuring continuous filling of the sample chamber with dry gas, automatic sample injection is realized, the purpose of uninterrupted real-time measurement of the system is achieved, the influence caused by the change in the humidity of the gas environment in the sample chamber during the sample taking and placing process is reduced, and the test efficiency of the system is improved. Summary of the Invention:

[0005] The object of the present invention is to overcome the shortcomings of the prior art. Water vapor in the atmosphere has an obvious absorption and attenuation effect on terahertz waves. The greater the humidity, the stronger the attenuation effect on terahertz waves, and the influence is more obvious at the absorption peak. The design of the sample chamber of a general terahertz time-domain spectroscopy system is a closed space. When measuring a sample, the sample is first placed on the sample holder and then the sample chamber is filled with dry gas. Before measuring different samples, the sample chamber needs to be repeatedly evacuated, resulting in low measurement efficiency and unable to ensure that the air humidity in the sample chamber remains consistent each time. To solve the above problems in the use of the sample chamber, the object of the present invention is to provide a design of a transmission sample chamber for a terahertz time-domain spectroscopy system with uninterrupted measurement and a sample injection method, which can achieve automatic sample injection while ensuring continuous filling of dry air in the sample chamber, realize the purpose of uninterrupted real-time measurement of the system, reduce the influence caused by the change of the gas environment humidity in the sample chamber during the sample loading and unloading process, and improve the system test efficiency.

[0006] To achieve the above object, the transmission sample chamber for the terahertz time-domain spectroscopy system with uninterrupted measurement of the present invention includes an emission optical path unit, a detection optical path unit, a sample turntable, a sample turntable rotation motor, and a sample chamber. The emission optical path unit and the detection optical path unit are both placed in the sample chamber. A part of the sample turntable is placed in the sample chamber, and the other part is hermetically passed through the sample chamber shell and placed outside the sample chamber. The sample turntable is placed in the middle position between the emission optical path unit and the detection optical path unit. Sample fixing holes are uniformly arranged in the circumferential direction of the sample turntable. The sample turntable rotation motor is connected to the sample turntable to drive the sample turntable to rotate, realizing the conversion of the sample fixing holes inside and outside the sample chamber, and placing the sample fixing hole containing the sample to be measured on the optical axis of the terahertz optical path formed by the emission optical path unit and the detection optical path unit to complete the addition of the sample.

[0007] Specifically, the number of the sample fixing holes is N, where N is a positive integer greater than or equal to 1. The number of the sample fixing holes is related to the rotation angle of the sample turntable driven by the sample turntable rotation motor, and the rotation angle is equal to 360° / N.

[0008] Specifically, the emission optical path unit includes a terahertz emission antenna, a first collimating lens, and a first focusing lens. The detection optical path unit includes a second focusing lens, a second collimating lens, and a terahertz detection antenna. The terahertz emission antenna, the first collimating lens, the first focusing lens, the second focusing lens, the second collimating lens, and the terahertz detection antenna are sequentially placed according to the designed focal lengths. The sample turntable is placed between the first focusing lens and the second focusing lens.

[0009] Furthermore, the transmission sample chamber of the continuous measurement terahertz time-domain spectroscopy system further includes an automatic adjustment device composed of a lens holder, a collimating lens rotating screw, a focusing lens rotating screw, a collimating lens motor, and a focusing lens motor. The parallel collimating lens rotating screw and focusing lens rotating screw are respectively rotationally connected to the collimating lens motor and the focusing lens motor. The first collimating lens, the first focusing lens, the second focusing lens, and the second collimating lens are sequentially connected to the collimating lens rotating screw and the focusing lens rotating screw through the lens holder. The collimating lens rotating screw is respectively threadedly connected to the lens holders fixing the first collimating lens and the second collimating lens, and the threaded connection directions are opposite. The focusing lens rotating screw is respectively slidably connected to the lens holders fixing the first collimating lens and the second collimating lens. The focusing lens rotating screw is threadedly connected to the lens holders fixing the first focusing lens and the second focusing lens, and the threaded connection directions are opposite. The collimating lens rotating screw is slidably connected to the lens holders fixing the first focusing lens and the second focusing lens.

[0010] Furthermore, the sample turntable includes a sample turntable bracket and a rotating disk. The bottom of the sample turntable bracket is fixed on the collimating lens rotating screw and the focusing lens rotating screw. The sample turntable rotating motor is fixed on the side of the sample turntable bracket. The rotating disk is placed in the installation groove formed by the symmetric installation ears on the upper sides of the sample turntable bracket. The rotating shaft passes through the central hole of the rotating disk and the through holes on the two installation ears and is then connected to the output shaft of the sample turntable rotating motor through a conveyor belt.

[0011] Furthermore, the sample chamber includes a housing body, an air inlet hole, an air outlet hole, a transparent observation window, and an optoelectronic integrated socket. The air inlet hole and the air outlet hole are respectively and fixedly arranged on the upper and lower sides of the housing body. The transparent observation window is fixed in the middle of the housing body. A part of the rotating disk is hermetically passed through the through hole on the transparent observation window. Driven by the sample turntable rotating motor, the rotating disk rotates, so that the sample fixing hole is switched inside and outside the sample chamber. The terahertz emission antenna and the terahertz detection antenna are externally connected to other components of the terahertz time-domain spectroscopy system through the optoelectronic integrated socket.

[0012] A sealing strip is arranged at the connection between the rotating disk and the transparent observation window to ensure the airtightness of the sealed chamber.

[0013] Further explanation, both the air inlet hole and the air outlet hole are air one-way valves, which can adjust and control the air pressure in the sample chamber.

[0014] Furthermore, the transmission sample chamber of the continuous measurement terahertz time-domain spectroscopy system further includes an intelligent control unit. The intelligent control unit is connected to the sample turntable rotating motor, the collimating lens motor, and the focusing lens motor to control their operations.

[0015] The present invention has the following beneficial effects compared with the prior art: The automatic sample injection is realized through the sample turntable rotation motor and the sample turntable, avoiding the influence on environmental factors such as humidity in the sample chamber caused by opening the sample chamber during the traditional sample injection process; The air one-way valve is selected to control the air flow rate in and out of the sample chamber, ensuring a constant pressure in the chamber, and maintaining the positive pressure and the humidity of the gas in the sample chamber during the process of exchanging test samples, ensuring the accurate and reliable test results of the system. Description of the Drawings:

[0016] Figure 1 It is an external structure diagram of the transmission sample chamber of the terahertz time-domain spectroscopy system for continuous measurement related to the present invention.

[0017] Figure 2 It is a schematic diagram of the structural principle of the transmission sample chamber of the terahertz time-domain spectroscopy system for continuous measurement related to the present invention.

[0018] Figure 3 It is a connection structure diagram of the sample turntable rotation motor and the sample turntable related to the present invention.

[0019] Figure 4 It is a schematic diagram of the connection relationship of the emission optical path unit, the detection optical path unit, the collimating lens rotation screw and the focusing lens rotation screw related to the present invention. Specific Embodiments:

[0020] The present invention will be further described below through specific embodiments in conjunction with the drawings.

[0021] Embodiment 1

[0022] As Figure 1 shown, the transmission sample chamber of the terahertz time-domain spectroscopy system for continuous measurement involved in this embodiment includes an emission optical path unit 1, a detection optical path unit 2, a sample turntable 3, a sample turntable rotation motor 4 and a sample chamber 5. The emission optical path unit 1 and the detection optical path unit 2 are both placed in the sample chamber 5. A part of the sample turntable 3 is placed inside the sample chamber 5, and the other part is hermetically passed through the sample chamber shell and placed outside the sample chamber 5. The sample turntable 3 is placed in the middle position between the emission optical path unit 1 and the detection optical path unit 2. Sample fixing holes 301 are evenly arranged in the circumferential direction of the sample turntable 3. The sample turntable rotation motor 4 is connected to the sample turntable 3 to drive the sample turntable 3 to rotate, realizing the conversion of the sample fixing holes inside and outside the sample chamber, and placing the sample fixing holes containing the sample to be measured on the optical axis of the terahertz optical path formed by the emission optical path unit 1 and the detection optical path unit 2 to complete the addition of the sample.

[0023] Specifically, the number N of the sample fixing holes 301 can be set as required, such as 1, 2, etc. The number of sample fixing holes is related to the rotation angle of the sample turntable 3 driven by the sample turntable rotation motor 4, and the rotation angle is equal to 360° / N. For example, when there are 2 sample fixing holes, the sample turntable 3 needs to rotate 180° to achieve sample conversion.

[0024] Specifically, the emission optical path unit 1 includes a terahertz emission antenna 101, a first collimating lens 102, and a first focusing lens 103. The detection optical path unit includes a second focusing lens 201, a second collimating lens 202, and a terahertz detection antenna 203. The terahertz emission antenna 101, the first collimating lens 102, the first focusing lens 103, the second focusing lens 201, the second collimating lens 203, and the terahertz detection antenna 203 are sequentially placed according to the designed focal lengths, and the sample turntable 3 is placed between the first focusing lens 103 and the second focusing lens 201.

[0025] Furthermore, the transmission sample chamber of the continuous measurement terahertz time-domain spectroscopy system further includes an automatic adjustment device 6 composed of a lens holder 601, a collimating lens rotating screw 602, a focusing lens rotating screw 603, a collimating lens motor 604, and a focusing lens motor 605. The parallel collimating lens rotating screw 602 and the focusing lens rotating screw 603 are respectively rotationally connected to the collimating lens motor 604 and the focusing lens motor 605. The first collimating lens 102, the first focusing lens 103, the second focusing lens 201, and the second collimating lens 202 are sequentially connected to the collimating lens rotating screw 602 and the focusing lens rotating screw 603 through the lens holder 601. The collimating lens rotating screw 602 is respectively threadedly connected to the lens holder 601 fixing the first collimating lens 102 and the second collimating lens 103, and the threaded connection directions are opposite. The focusing lens rotating screw 603 is respectively slidably connected to the lens holder 601 fixing the first collimating lens 102 and the second collimating lens 103. The focusing lens rotating screw 603 is threadedly connected to the lens holder 601 fixing the first focusing lens 103 and the second focusing lens 201, and the threaded connection directions are opposite. The collimating lens rotating screw 602 is slidably connected to the lens holder 601 fixing the first focusing lens 103 and the second focusing lens 201. By installing in the positive and negative directions of the thread, the reverse movement of the two focusing lenses or collimating lenses along the rotating screws (the collimating lens rotating screw 602 and the focusing lens rotating screw 603) can be realized synchronously, so as to realize the symmetric adjustment of the lens relative to the sample turntable. For example, the left-handed thread on the collimating lens rotating screw 602 is connected to the left-handed thread on the lens holder 601 of the first collimating lens 102, the right-handed thread on the collimating lens rotating screw 602 is connected to the left-handed thread on the lens holder 601 of the second collimating lens 202, the left-handed thread on the focusing lens rotating screw 603 is connected to the left-handed thread on the lens holder 601 of the first focusing lens 103, and the right-handed thread on the focusing lens rotating screw 603 is connected to the left-handed thread on the lens holder 601 of the second focusing lens 201.

[0026] Furthermore, the sample turntable 3 includes a sample turntable bracket 302 and a rotating disk 303. The bottom of the sample turntable bracket 302 is fixed on the collimating lens rotating screw 602 and the focusing lens rotating screw 603. The sample turntable rotating motor 4 is fixed on the side of the sample turntable bracket 302. The rotating disk 303 is placed in the installation groove formed by the installation ears 304 symmetrically installed on both sides of the upper part of the sample turntable bracket 302. The rotating shaft 305 passes through the central hole of the rotating disk 303 and the through holes on the two installation ears 304 and is then connected to the output shaft of the sample turntable rotating motor 303 through the conveyor belt 306. Driven by the sample turntable rotating motor 303, the rotating disk 303 rotates, and then the rotation of the sample fixing hole 301 is realized.

[0027] Further, the sample chamber 5 includes a housing body 501, an air inlet hole 502, an air outlet hole 503, a transparent observation window 504, and an optoelectronic integrated socket 506. The air inlet hole 502 and the air outlet hole 503 are fixedly arranged on the upper and lower sides of the housing body 501 respectively. The transparent observation window 504 is fixed in the middle of the housing body. A part of the rotating disk 303 is hermetically passed through the through hole on the transparent observation window 504. Driven by the sample turntable rotation motor 4, the rotating disk 303 rotates, so that the sample fixing hole 301 is switched inside and outside the sample chamber 5. A sealing rubber strip 505 is arranged at the connection between the rotating disk 303 and the transparent observation window 504 to achieve a sealed connection and ensure the airtightness of the sealed chamber. The terahertz emission antenna 101 and the terahertz detection antenna 203 are externally connected to other components of the terahertz time-domain spectroscopy system through the optoelectronic integrated socket 506. Specifically, the sealing rubber strip is made of rubber material. The transparent observation window facilitates observing the situation inside the sample chamber.

[0028] Further explanation, the diameter sizes of the air inlet hole 502 and the air outlet hole 503 are 10 mm. Both the air inlet hole 502 and the air outlet hole 503 are air check valves, and the opening and closing pressure of the air check valve is 1.1 times the atmospheric pressure. During the whole testing process, ensuring that the air check valve is open means ensuring that the pressure inside the sample chamber is a positive pressure of 1.1 times the atmospheric pressure.

[0029] Further explanation, encapsulating the sample holder and various lenses in the sample chamber can effectively prevent the pollution of the lenses and the sample by external dust, keep the signal-to-noise ratio of the system constant, and improve the accuracy of the test data;

[0030] Further, the uninterrupted measurement terahertz time-domain spectroscopy system transmission sample chamber further includes an intelligent control unit. The intelligent control unit is connected to the control system of the sample turntable rotation motor through an RS232 communication interface to control the operation of the turntable rotation motor 4. For example, when it is necessary to replace the sample to be measured, the intelligent control unit sends a signal, which is transmitted to the control system of the sample turntable rotation motor through the RS232 interface, driving the sample disk to rotate by a corresponding angle, so that the sample to be measured is placed in the optical path of the terahertz spectroscopy system, realizing automatic sample injection. During the process, the gas pressure and dryness conditions inside the sample chamber remain unchanged, ensuring the consistency of the sample detection conditions. Further, the intelligent control unit is also respectively connected to the collimating lens motor 604 and the focusing lens motor 605 to control the operation of the collimating lens motor 604 and the focusing lens motor 605 according to the set conditions.

[0031] The installation and use method of the uninterrupted measurement terahertz time-domain spectroscopy system transmission sample chamber involved in this embodiment specifically includes the following steps:

[0032] (1) Fix the bottom of the sample turntable bracket on the collimating lens rotating screw and the focusing lens rotating screw. Part of the rotating disc passes through the through hole on the transparent observation window. Driven by the sample turntable rotating motor, the rotating disc rotates, so that the sample fixing hole switches between the inside and outside of the sample chamber;

[0033] (2) Press the first focusing lens and the second focusing lens on the lens holder respectively, ensure good contact surfaces between the two focusing lenses and the lens holder, and ensure that the two lenses are parallel. Then fix the bottom of the corresponding lens holder on the collimating lens rotating screw and the focusing lens screw. The focusing lens rotating screw is threadedly connected to the lens holder fixing the first focusing lens and the second focusing lens, and the threaded connection directions are opposite. The collimating lens rotating screw is slidably connected to the lens holder fixing the first focusing lens and the second focusing lens. Driven by the focusing lens motor, the focusing lens rotating screw rotates, and the first focusing lens and the second focusing lens move in opposite directions along the focusing lens rotating screw, so that the corresponding lens holder bases of the first focusing lens and the second focusing lens contact the sample turntable bracket base;

[0034] (3) Reverse the adjustment of the focusing lens motor. The first focusing lens and the second focusing lens move away from the sample bracket along the focusing lens rotating screw, adjust the distance between the first focusing lens and the second focusing lens and the sample turntable bracket to achieve autofocus. Since the focal lengths of the two focusing lenses are the same, when the two focusing lenses move away from the sample bracket and move to a position where the distance between the two lenses is 2f, the focal positions of the two lenses are the center positions of the sample holes, that is, the focusing beam waist positions of the two lenses are hit at the center of the sample. At this time, the terahertz energy focused on the sample is the largest, the signal is the strongest, and the test effect is the best;

[0035] (4) Press the first collimating lens and the second collimating lens on the corresponding lens holders respectively. During the process, ensure good contact surfaces between the first collimating lens and the second collimating lens and the lens holders, and ensure that the two lenses are parallel. Then fix the bottom of the corresponding lens holders on the collimating lens rotating screw and the focusing lens screw. The collimating lens rotating screw is threadedly connected to the lens holders fixing the first collimating lens and the second collimating lens respectively, and the threaded connection directions are opposite. The focusing lens rotating screw is slidably connected to the lens holders fixing the first collimating lens and the second collimating lens respectively. The centers of the first collimating lens and the second collimating lens are on the same horizontal line. Driven by the collimating lens motor, the collimating lens rotating screw rotates, and the first collimating lens and the second collimating lens move in opposite directions along the collimating lens rotating screw, and then adjust the focusing distance of the two collimating lenses to achieve autofocus;

[0036] (5) Then fix the terahertz emission antenna and the terahertz detection antenna on the mirror mounts. By fixing the corresponding mirror mounts on the collimating lens rotation screws and the focusing lens rotation screws outside the first collimating lens and the second collimating lens respectively, and keeping the two mirror bases in contact with the mirror bases of the corresponding first collimating lens and second collimating lens respectively. At this time, the starting positions of the collimating lens motor 604 and the focusing lens motor 605 are at the 0 point. Adjust the focusing lens motor and the collimating lens motor to adjust the first collimating lens, the second collimating lens, the first focusing lens and the second focusing lens to the specified positions;

[0037] (6) Fill the sample chamber with dry air through the one-way inflation valve, and set the air flow rate to 80 cm 3 / min. At this time, the gas in the chamber circulates once in about 10 s. During the process, keep the gas flowing into the sample chamber at a constant speed to reduce the measurement error caused by the gas flow fluctuation; After 3 min, collect the reference signal;

[0038] (7) Fix the sample to be measured in the sample fixing hole outside the sample chamber. After the reference signal collection is completed, the sample turntable rotation motor rotates to make the sample to be measured on the optical axis of the terahertz spectroscopy system optical path, and start to collect the sample signal.

Claims

1. An uninterrupted measurement terahertz time-domain spectroscopy system transmission sample chamber, characterized in that, It includes a transmitting optical path unit, a detecting optical path unit, a sample turntable, a sample turntable rotation motor, and a sample chamber. The transmitting optical path unit and the detecting optical path unit are both placed in the sample chamber. A part of the sample turntable is placed inside the sample chamber, and the other part hermetically passes through the sample chamber shell and is placed outside the sample chamber. The sample turntable is placed in the middle position between the transmitting optical path unit and the detecting optical path unit. Sample fixing holes are uniformly arranged in the circumferential direction of the sample turntable. The sample turntable rotation motor is connected to the sample turntable to drive the sample turntable to rotate, realizing the conversion of the sample fixing holes inside and outside the sample chamber, and placing the sample fixing holes containing the sample to be measured on the optical axis of the terahertz optical path formed by the transmitting optical path unit and the detecting optical path unit to complete the addition of the sample.

2. The transmissive sample chamber of the terahertz time-domain spectroscopy system for continuous measurement according to claim 1, characterized in that The number of the sample fixing holes is N, where N is a positive integer greater than or equal to 1. The number of the sample fixing holes is related to the angle by which the sample turntable rotation motor drives the sample turntable to rotate, and the rotation angle is equal to 360° / N.

3. The transmissive sample chamber of the terahertz time-domain spectroscopy system for continuous measurement according to claim 1, characterized in that The transmitting optical path unit includes a terahertz transmitting antenna, a first collimating lens, and a first focusing lens. The detecting optical path unit includes a second focusing lens, a second collimating lens, and a terahertz detecting antenna. The terahertz transmitting antenna, the first collimating lens, the first focusing lens, the second focusing lens, the second collimating lens, and the terahertz detecting antenna are placed in sequence according to the designed focal lengths. The sample turntable is placed between the first focusing lens and the second focusing lens.

4. The transmission sample chamber of the continuous measurement terahertz time-domain spectroscopy system according to claim 3, wherein The terahertz time-domain spectroscopy system for continuous measurement penetrates the sample chamber and further includes an automatic adjustment device composed of a lens holder, a collimating lens rotation screw, a focusing lens rotation screw, a collimating lens motor, and a focusing lens motor. The parallel collimating lens rotation screw and focusing lens rotation screw are respectively rotationally connected to the collimating lens motor and the focusing lens motor. The first collimating lens, the first focusing lens, the second focusing lens, and the second collimating lens are sequentially connected to the collimating lens rotation screw and the focusing lens rotation screw through the lens holder. The collimating lens rotation screw is respectively threadedly connected to the lens holders fixing the first collimating lens and the second collimating lens, and the threaded connection directions are opposite. The focusing lens rotation screw is respectively slidably connected to the lens holders fixing the first collimating lens and the second collimating lens. The focusing lens rotation screw is threadedly connected to the lens holders fixing the first focusing lens and the second focusing lens, and the threaded connection directions are opposite. The collimating lens rotation screw is slidably connected to the lens holders fixing the first focusing lens and the second focusing lens.

5. The transmissive sample chamber of the terahertz time-domain spectroscopy system for continuous measurement according to claim 1 or 4, characterized in that, The sample turntable includes a sample turntable bracket and a rotating disc. The bottom of the sample turntable bracket is fixed on the collimating lens rotation screw and the focusing lens rotation screw. The sample turntable rotation motor is fixed on the side of the sample turntable bracket. The rotating disc is placed in the installation groove formed by the symmetric installation ears on the upper part of the sample turntable bracket. The rotating shaft passes through the central hole of the rotating disc and the through holes on the two installation ears and is then connected to the output shaft of the sample turntable rotation motor through a conveyor belt.

6. The uninterrupted measurement terahertz time-domain spectroscopy system transmission sample chamber according to claim 5, characterized in that, The sample chamber includes a housing body, an air inlet hole, an air outlet hole, a transparent observation window, and an optoelectronic integrated socket. The air inlet hole and the air outlet hole are fixedly arranged on the upper and lower sides of the housing body respectively. The transparent observation window is fixed in the middle of the housing body. A part of the rotating disc is hermetically passed through the through hole on the transparent observation window. Driven by the sample turntable rotation motor, the rotating disc rotates, so that the sample fixing holes are switched inside and outside the sample chamber. The terahertz emission antenna and the terahertz detection antenna are externally connected to other components of the terahertz time-domain spectroscopy system through the optoelectronic integrated socket.

7. The transmissive sample chamber of the terahertz time-domain spectroscopy system for continuous measurement according to claim 6, characterized in that, Both the air inlet hole and the air outlet hole are air one-way valves, which can adjust and control the air pressure in the sample chamber.

8. The uninterrupted measurement terahertz time-domain spectroscopy system transmission sample chamber according to claim 7, characterized in that, The continuous measurement terahertz time-domain spectroscopy system transmits through the sample chamber, and further includes an intelligent control unit. The intelligent control unit is connected to the sample turntable rotation motor, the collimating lens motor, and the focusing lens motor to control their operations.

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