Synchronous view finding linear array photoelectric detection device and system

Abstract

The invention discloses a synchronous view-finding linear array photoelectric detection system, which comprises a view-finding lens, a spectroscope, a delay lens group, a linear array photoelectric detection module, a photoelectric detection module, a photoelectric detection module, a photoelectric detection module, a photoelectric detection module and a control module, wherein the view-finding lens gathers light of a detected area to the spectroscope which divides the gathered light into a synchronous view-finding light path signal and a detection light path signal; the view-finding camera is used for acquiring a synchronous view-finding light path signal and completing synchronous view-finding and optical calibration; each photomultiplier is used for capturing a detection light path signal, recording time evolution of light emission of different partitions at an ultrahigh speed and converting the detection light path signal into a detection electric signal; and the signal processing module is used for amplifying the detection electric signal to obtain a high-broadband detection voltage signal and reducing broadband loss after the high-broadband detection voltage signal is transmitted through the coaxial cable. Through the system disclosed by the invention, the imaging speed and precision of the detector are improved, the synchronization problem can be effectively solved, and technical support is provided for efficient synchronous imaging calibration of a complex dynamic scene.

Description

Technical Field

[0001] The present invention belongs to the technical field of photoelectric detectors, and in particular, relates to a synchronous framing line array photoelectric detection device and system. Background Art

[0002] A photodetector is a device based on the principle of photoelectric conversion. It detects light signals and extracts information by converting received light signals into electrical signals. The basic working principle of a photodetector is to use the photoelectric effect of semiconductor materials. When light shines on the photosensitive surface of the detector, photons interact with electrons to generate photogenerated electron pairs, which are then converted into usable electrical signals through external circuits.

[0003] Existing photoelectric detectors usually have technical bottlenecks between speed and resolution, especially when dealing with high-speed moving targets or complex scenes, it is difficult to take into account high speed, accuracy and synchronous framing functions. When a multi-channel combination is used to improve the spatial resolution performance of the detector, each channel is prone to time delay differences during the data acquisition process due to problems such as signal processing delays and inconsistent sampling timing. This delay difference causes the signal output and imaging results to be out of sync, thereby causing spatial position offset or motion trajectory distortion. In addition, existing linear array photoelectric detectors generally do not have synchronous framing and calibration functions, and cannot achieve high-precision real-time imaging in dynamic scenes, which further limits their application in high-speed detection, precision measurement and other fields.

[0004] With the growing demand for high-speed imaging technology in industrial automation, aerospace, and scientific research, the development of a linear array photoelectric detector that can achieve high-speed framing, synchronous data acquisition, and high-precision imaging has become an urgent need for technological development. Therefore, a synchronous framing linear array photoelectric detection device and system is proposed, which can not only significantly improve the imaging speed and accuracy of the detector, but also effectively solve the synchronization problem, and provide technical support for efficient synchronous imaging calibration of complex dynamic scenes, which has important application value. Summary of the invention

[0005] In view of the defects and improvement requirements of the prior art, the present invention provides a synchronous framing line array photoelectric detection system, which is characterized by comprising:

[0006] The framing module includes a framing lens, a beam splitter, a delay lens group and a framing camera. The reference plane is set according to the position of the framing lens, wherein the beam splitter is placed at an angle of 45 degrees to the reference plane. The framing lens converges the light of the measured area to the beam splitter, and the beam splitter divides the converged light into a synchronous framing optical path signal and a detection optical path signal. The synchronous framing optical path signal is perpendicular to the detection optical path signal. The delay lens group is perpendicular to the reference plane and is used to extend the focusing optical path of the synchronous framing optical path signal. The framing camera is used to obtain the synchronous framing optical path signal and complete synchronous framing and optical calibration.

[0007] Linear array photodetector: including multiple photomultiplier tubes, each of which is used to capture the detection light path signal and record the time evolution of the luminescence of different partitions at ultra-high speed, and convert the detection light path signal into a detection electrical signal; and

[0008] Signal processing module: used to amplify the detection electrical signal to obtain a high-bandwidth detection voltage signal, and reduce the broadband loss of the high-bandwidth detection voltage signal after being transmitted through the coaxial cable.

[0009] Furthermore, the delay lens group includes a collimating lens, a converging lens, and a flange mount, and the flange mount is mechanically connected to the viewfinder camera, wherein the synchronous viewfinder optical path signal passes through the collimating lens and the converging lens in sequence and then reaches the viewfinder camera.

[0010] Furthermore, the focal length of the delay lens group is greater than the flange distance of the viewfinder camera.

[0011] Furthermore, it also includes a stabilized power supply, which is connected to the multi-channel photomultiplier tubes and is used to provide electrical energy to the multi-channel photomultiplier tubes and perform electronic gain adjustment. The stabilized power supply supplies power to the linear array photodetector, wherein the voltage adjustment range of the stabilized power supply is -400V to -1000V.

[0012] Furthermore, the signal processing module includes a first amplifier stage, which is used to amplify the detection electrical signal to obtain a high-bandwidth detection voltage signal, wherein the first amplifier stage includes a parasitic capacitor, a compensation capacitor, a feedback resistor and a transimpedance amplifier, wherein the compensation capacitor is connected in parallel with the feedback resistor, and one end is connected to the negative input terminal of the transimpedance amplifier, and the other end is connected to the output terminal of the transimpedance amplifier, one end of the parasitic capacitor is connected to the negative input terminal of the transimpedance amplifier, and the other end is grounded, the positive input terminal of the transimpedance amplifier is grounded, and the negative input terminal of the transimpedance amplifier is used to receive the detection electrical signal through a coaxial high-speed cable.

[0013] Furthermore, the signal processing module also includes a second amplifier stage for reducing the broadband loss of the high-bandwidth detection voltage signal after transmission through the coaxial cable, and the second amplifier stage includes a voltage follower and an impedance match, wherein the negative input terminal of the voltage follower is connected to the output terminal of the transimpedance amplifier, the negative input terminal of the voltage follower is connected to the output terminal of the voltage follower, the positive input terminal of the voltage follower is grounded, one end of the impedance match is connected to the output terminal of the voltage follower, and the other end of the impedance match is grounded.

[0014] Furthermore, the relationship between the parasitic capacitance, compensation capacitance, feedback resistance and transimpedance amplifier is as follows:

[0015]

[0016] Among them, C f is the capacitance value of the compensation capacitor, C i is the capacitance value of the parasitic capacitor, R f is the resistance value of the feedback resistor, and GBWP is the gain-bandwidth product of the transimpedance amplifier.

[0017] Furthermore, it also includes a data collector, which is connected to the signal processing module via the coaxial cable and is used to receive the high-bandwidth detection voltage signal output by the signal processing module, wherein the number of acquisition channels of the data collector is equal to the number of photomultiplier tubes, wherein the analog bandwidth of a single channel is greater than or equal to 400MHz, the sampling accuracy is greater than or equal to 12bit, the storage depth is greater than or equal to 128M points, and the sampling clocks of all channels are synchronized.

[0018] Furthermore, it also includes a low ripple DC power supply, which supplies power to the signal processing module, wherein the voltage ripple effective value is less than 60mV.

[0019] The present invention also discloses a synchronous framing linear array photoelectric detection device, comprising a framing module and a linear array photoelectric detector, characterized in that:

[0020] The framing module includes a framing lens, a beam splitter, a delay lens group and a framing camera. The framing lens converges the light of the measured area to the beam splitter. The beam splitter divides the converged light into a synchronous framing optical path signal and a detection optical path signal. The detection optical path signal is transmitted to the linear array photoelectric detector. The synchronous framing optical path signal passes through the delay lens group and is imaged on the framing camera to complete synchronous framing and optical calibration.

[0021] The linear array photoelectric detector includes multiple photomultiplier tubes, which are used to convert multiple detection light path signals of different partitions into detection electrical signals.

[0022] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects:

[0023] (1) The framing module divides the observation light into a synchronous framing optical path signal and a detection optical path signal, ensuring that the framing camera and the linear array photodetector work synchronously, thereby achieving synchronous framing and precise calibration in dynamic scenes, effectively solving the imaging asynchrony problem caused by time delay or inconsistent optical path in the prior art.

[0024] (2) With the help of multiple photomultiplier tubes and high-performance negative high-voltage regulated power supplies, high-gain photoelectric signal conversion capabilities are provided. Combined with the signal processing module, real-time recording of dynamic target areas with high temporal and spatial resolution is achieved, while supporting the precise capture of high-speed time evolution information.

[0025] (3) The data logger supports multi-channel (for example, 16 channels or more) synchronous signal acquisition, has an analog bandwidth of 400 MHz or more and a sampling accuracy of 12 bits or more, and a storage depth of up to 128M points. Through voltage follower and impedance matching optimization, the integrity of the signal during long-distance transmission is guaranteed, while reducing the crosstalk of adjacent signal channels to less than 3%.

[0026] (4) The ratio of light intensity in the beam splitter reflection path is greater than or equal to 50%, and the delay lens group meets the focal length requirements of the framing camera flange distance, ensuring synchronous framing and framing accuracy from the perspective of optical design. The overall gain curve ±3dB bandwidth of the linear array photodetector is greater than or equal to 100MHz, the system has a fast response speed and stable signal processing, and can adapt to the needs of complex dynamic scenes.

[0027] (5) The low-ripple DC power supply and transimpedance amplifier feedback design are used to significantly reduce noise interference. Combined with the broadband gain adjustment circuit design, the high stability and high-fidelity characteristics of the signal output are guaranteed to meet the needs of complex dynamic scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a synchronous framing line array photoelectric detection system provided according to an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of a light splitting and framing optical module provided according to an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of a single-channel signal processing module provided according to an embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the spatial corresponding positions of the linear array photoelectric detector and the detected entity provided according to an embodiment of the present invention.

[0032] In all the drawings, the same reference numerals are used to represent the same elements or structures, among which: 1. incident light, 2. viewfinder lens, 3. metal housing, 4. spectroscope, 5. spectroscopic viewfinder optical module, 6. linear array photodetector, 7. coaxial high-speed cable, 8. signal processing module, 9. high-voltage power supply line, 10. low-voltage DC battery power supply line, 11. ground wire, 12. coaxial cable, 13. data acquisition device, 14. stabilized power supply, 15. low ripple DC power supply, 501. collimating lens, 502. converging lens, 503. flange mount, 504. viewfinder camera, 801. parasitic capacitance, 802. compensation capacitance, 803. feedback resistor, 804. transimpedance amplifier, 805. voltage follower, 806. impedance matcher. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention 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 invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] In the present invention, the terms "first", "second", etc. (if any) in the present invention and the drawings are used to distinguish similar objects but not necessarily to describe a specific order or sequence.

[0035] Figure 1 FIG. 1 is a schematic diagram of a synchronous viewing line array photoelectric detection system provided according to an embodiment of the present invention. Figure 1 As shown, the synchronous framing linear array photoelectric detection system includes a framing module, a linear array photoelectric detector 6, a signal processing module 8, a data acquisition device 13, a voltage-stabilized power supply 14, and a low-ripple DC power supply 15, wherein the framing module is composed of a framing lens 2, a beam splitter 4, and a beam splitting framing optical module 5. Figure 1 As shown, the viewfinder lens 2 converges the incident light 1 of the measured area to the beam splitter 2, and the beam splitter 2 splits the light 1 into two signals, namely a synchronous framing light path signal and a detection light path signal, wherein the synchronous framing light path signal is transmitted to the beam splitting framing optical module 5, and the beam splitting framing optical module 5 completes synchronous framing and optical calibration.

[0036] Furthermore, the detection light path signal is transmitted to the linear array photodetector 6, and the position of the viewfinder lens 2 is set as the reference plane, wherein the beam splitter is placed at a 45-degree angle to the reference plane, and the synchronous viewfinder light path signal is perpendicular to the detection light path signal. The linear array photodetector 6 is connected to the signal processing module 8 through a coaxial high-speed cable 7, the output end of the signal processing module 8 is connected to the data acquisition device 13, the voltage-stabilized power supply 14 provides power to the linear array photodetector 6, and the low-ripple DC power supply 15 provides power to the signal processing module 8. The linear array photodetector 6 includes a plurality of photomultiplier tubes, each of which is used to capture the detection light path signal and record the time evolution of the luminescence of different partitions at ultra-high speed, and convert the detection light path signal into a detection electrical signal. The signal processing module 8 is used to amplify the detection electrical signal to obtain a high-bandwidth detection voltage signal, and to reduce the broadband loss of the high-bandwidth detection voltage signal after transmission through the coaxial cable.

[0037] In one embodiment of the present invention, the multi-channel photomultiplier tubes in the linear array photodetector 6 are composed of multiple single-point photomultiplier tubes, such as 16 photomultiplier tubes arranged in a linear array, and the 16 photomultiplier tubes arranged in a linear array are used to convert each detection light path signal into a detection electrical signal by receiving the detection light path signal transmitted by the spectroscope 4, and to record the time evolution of the luminescence of different partitions at ultra-high speed. Further, the voltage stabilizer 14 is a negative high-voltage voltage stabilizer, which is connected to the power supply end of the linear array photodetector 6 through a high-voltage power supply line 9, and is used to supply power to the multi-channel photomultiplier tubes and adjust the electronic gain, wherein the voltage adjustment range of the voltage stabilizer is -400V to -1000V.

[0038] Figure 2 Schematic diagram of a light splitting and framing optical module provided according to an embodiment of the present invention. Figure 2 Will combine Figure 1 Description, the spectroscopic framing optical module 5 includes a delay lens group and a framing camera 504, wherein the delay lens group is perpendicular to the reference plane and is used to extend the focusing optical path of the synchronous framing optical path signal, and the framing camera 504 obtains the synchronous framing optical path signal to complete the synchronous framing and optical calibration, wherein the focal length of the delay lens group is greater than the flange distance of the framing camera 504 ( Figure 2 The flange distance of the viewfinder camera 504 is not shown in the figure), and the light intensity ratio reflected by the beam splitter 2 to the delay lens group shall not be less than 50%. Further, the delay lens group includes a collimating lens 501, a converging lens 502, and a flange mount 503. The flange mount 503 is mechanically connected to the viewfinder camera 504, that is, the flange mount 503 is fixed on the viewfinder camera 504. The synchronous viewfinder optical path signal sequentially passes through the collimating lens 501 and the converging lens 502 and then reaches the viewfinder camera 504. dis the distance between the collimating lens 501 and the converging lens 502, also known as the lens spacing; f is the focal length of the collimating lens 501 and the converging lens 502, also known as the focal length of the delay lens group; d0 is the distance from the starting point of the synchronous framing light path signal to the delay lens group after the incident light 1 is split by the beam splitter 4, and the distance from the starting point of the detection light path signal to the linear array photodetector 6, both of which are equal, namely d0.

[0039] In one embodiment of the present invention, the method for extending the focusing optical path of the synchronous framing optical path signal is not limited to: Figure 2 As shown, by adding a reflector, the focusing optical path of the synchronous framing optical path signal can be extended arbitrarily, which is not limited to the above embodiment.

[0040] Figure 3 is a schematic diagram of a single-channel signal processing module provided according to an embodiment of the present invention, Figure 3 Will combine Figure 1 Describe, such as Figure 3 As shown, the signal processing module 8 includes a first amplifier stage and a second amplifier stage, wherein the first amplifier stage is used to amplify the detection electrical signal output by the linear array photodetector 6, wherein the detection electrical signal here is a weak current signal, which is a detectable voltage signal after amplification. The first amplifier stage includes a parasitic capacitor 801, a compensation capacitor 802, a feedback resistor 803 and a transimpedance amplifier 804, wherein after the compensation capacitor 802 is connected in parallel with the feedback resistor 803, one end is connected to the negative input end of the transimpedance amplifier 804, and the other end is connected to the output end of the transimpedance amplifier 804. One end of the parasitic capacitor 801 is connected to the negative input end of the transimpedance amplifier 804, and the other end of the parasitic capacitor 801 is grounded. The positive input end of the transimpedance amplifier 804 is grounded, and the negative input end is used to receive the detection electrical signal through the coaxial high-speed cable 7. Specifically, the first amplifier stage performs high-speed transimpedance amplification on the detection electrical signal output by the photomultiplier tube, that is, the weak current signal, to realize the high-bandwidth analog signal conversion from the weak current signal to the detectable voltage signal, also known as the high-bandwidth detection voltage signal. Furthermore, the low ripple DC power supply 15 supplies power to the transimpedance amplifier 804, wherein the effective value of the voltage ripple is less than 60 mV.

[0041] Further, the second amplifier stage is used to reduce the broadband loss caused by the high broadband detection voltage signal after being transmitted through the coaxial cable 12, wherein the second amplifier stage includes a voltage follower 805 and an impedance match 806, wherein the negative input terminal of the voltage follower 805 is connected to the output terminal of the transimpedance amplifier 804, the negative input terminal of the voltage follower 805 is connected to the output terminal of the voltage follower 805, and the positive input terminal is grounded. One end of the impedance match 806 is connected to the output terminal of the voltage follower 805, and the other end is grounded. Specifically, the low ripple DC power supply 15 supplies power to the voltage follower 805, wherein the voltage ripple effective value is less than 60mV.

[0042] Figure 3 The figure shows a single-channel signal processing module. When the linear array photodetector 6 includes multiple photomultiplier tubes, multiple single-channel signal processing modules are connected in parallel to realize the processing of multi-channel detection electrical signals, wherein the number of signal processing modules corresponds to the number of photomultiplier tubes.

[0043] Further, in one embodiment of the present invention, the relationship between the parasitic capacitor 801, the compensation capacitor 802, the feedback resistor 803 and the transimpedance amplifier 804 is as follows:

[0044]

[0045] Among them, C f is the capacitance value of the compensation capacitor, C i is the capacitance value of the parasitic capacitor, R f is the resistance value of the feedback resistor, and GBWP is the gain-bandwidth product of the transimpedance amplifier.

[0046] In the embodiment disclosed in the present invention, the ±3dB bandwidth of the overall gain curve of the linear array photoelectric detector 6 and the signal processing module 8 is not less than 100MHz, and the crosstalk of adjacent analog output signals is less than 3%.

[0047] Furthermore, the low ripple DC power supply 15 supplies power to the transimpedance amplifier 804 and the voltage follower 805. The two ends of the coaxial cable 12 are respectively connected to the voltage follower 805 and the data collector 13 to achieve long-distance transmission of analog signals. The data collector 13 is used to monitor and record and save multi-channel analog signal data, that is, to detect electrical signal data.

[0048] In an embodiment of the present invention, the data collector 13 is connected to the signal processing module 8 via a coaxial cable 12, and is used to receive the detection electrical signal output by the signal processing module, wherein the acquisition channel of the data collector is multi-channel, and the number of channels is the same as the number of photomultiplier tubes and the number of coaxial cables 12, and the multi-channel here includes 16 channels, but is not limited thereto. Specifically, the analog bandwidth of a single channel is greater than or equal to 400MHz, the sampling accuracy is greater than or equal to 12bit, the storage depth is greater than or equal to 128M points, and the sampling clocks of all channels of the data collector are synchronized.

[0049] Figure 4 Schematic diagram of the spatial corresponding position of the linear array photoelectric detector and the measured entity provided by an embodiment of the present invention. The object in the detection area is finally imaged on the linear array photoelectric detector 6 after being transmitted through the viewfinder lens 2 and the beam splitter 4. The spatial resolution s of the linear array photoelectric detector 6 is determined by the detector length L P , the focal length of the lens f and the distance D from the object to the lens are jointly determined, and satisfy s = (L P*D) / (16f). The linear array photoelectric detector 6 detects 16 linear array photoelectric signals.

[0050] The invention also discloses a synchronous framing linear array photoelectric detection device, comprising the framing module and a linear array photoelectric detector.

[0051] Through the synchronous framing photoelectric detector and system disclosed in the present invention, the observation light is divided into a synchronous framing light path signal and a detection light path signal through a framing module, ensuring that the framing camera and the linear array photoelectric detector work synchronously, thereby realizing synchronous framing and precise calibration in dynamic scenes, and effectively solving the imaging asynchronization problem caused by time delay or inconsistent optical path in the prior art.

[0052] Furthermore, with the help of multi-channel photomultiplier tubes and high-performance negative high-voltage regulated power supplies, high-gain photoelectric signal conversion capabilities are provided. Combined with the signal processing module, real-time recording of dynamic target areas with high temporal and spatial resolution can be achieved, while supporting the precise capture of high-speed time evolution information.

[0053] Furthermore, the data logger supports multi-channel (for example, greater than or equal to 16 channels) synchronous signal acquisition, has an analog bandwidth greater than or equal to 400MHz and a sampling accuracy greater than or equal to 12bit, and a storage depth of up to 128M points. Through voltage follower and impedance matching optimization, the integrity of the signal during long-distance transmission is guaranteed, while reducing the crosstalk of adjacent signal channels to less than 3%.

[0054] The light intensity ratio of the beam splitter reflected light path in the present invention is greater than or equal to 50%, and the delay lens group meets the focal length requirements of the flange distance of the framing camera, ensuring synchronous framing and framing accuracy from the perspective of optical design. The overall gain curve ±3dB bandwidth of the linear array photodetector is greater than or equal to 100MHz, the system has a fast response speed and stable signal processing, and is suitable for complex dynamic scene requirements.

[0055] The present invention adopts a low ripple DC power supply and a transimpedance amplifier feedback design to significantly reduce noise interference. Combined with a broadband gain adjustment circuit design, the high stability and high fidelity characteristics of the signal output are ensured to meet the needs of complex dynamic scenes.

[0056] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A synchronous framing line array photoelectric detection system, characterized in that: include: The framing module includes a framing lens, a beam splitter, a delay lens group and a framing camera. The reference plane is set according to the position of the framing lens, wherein the beam splitter is placed at an angle of 45 degrees to the reference plane. The framing lens converges the light of the measured area to the beam splitter, and the beam splitter divides the converged light into a synchronous framing optical path signal and a detection optical path signal. The synchronous framing optical path signal is perpendicular to the detection optical path signal. The delay lens group is perpendicular to the reference plane and is used to extend the focusing optical path of the synchronous framing optical path signal. The framing camera is used to obtain the synchronous framing optical path signal and complete synchronous framing and optical calibration. Linear array photodetector: includes multiple photomultiplier tubes, each of which is used to capture the detection light path signal and record the time evolution of luminescence in different partitions at ultra-high speed, and convert the detection light path signal into a detection electrical signal; as well as Signal processing module: used to amplify the detection electrical signal to obtain a high-bandwidth detection voltage signal, and reduce the broadband loss of the high-bandwidth detection voltage signal after being transmitted through the coaxial cable.

2. The synchronous viewing line array photoelectric detection system according to claim 1, characterized in that: The delay lens group includes a collimating lens, a converging lens, and a flange mount, and the flange mount is mechanically connected to the viewfinder camera, wherein the synchronous viewfinder optical path signal sequentially passes through the collimating lens and the converging lens and then reaches the viewfinder camera.

3. The synchronous viewing line array photoelectric detection system according to claim 2, characterized in that: The focal length of the delay lens group is greater than the flange distance of the viewfinder camera.

4. The synchronous viewing line array photoelectric detection system according to claim 1, characterized in that: It also includes a voltage-stabilized power supply, which is connected to the multi-channel photomultiplier tubes and is used to provide power for the multi-channel photomultiplier tubes and perform electronic gain adjustment, wherein the voltage adjustment range of the voltage-stabilized power supply is -400V to -1000V.

5. The synchronous viewing line array photoelectric detection system according to claim 1, characterized in that: The signal processing module includes a first amplifier stage, which is used to amplify the detection electrical signal to obtain a high-bandwidth detection voltage signal, wherein the first amplifier stage includes a parasitic capacitor, a compensation capacitor, a feedback resistor and a transimpedance amplifier, wherein the compensation capacitor is connected in parallel with the feedback resistor, and one end is connected to the negative input end of the transimpedance amplifier, and the other end is connected to the output end of the transimpedance amplifier, one end of the parasitic capacitor is connected to the negative input end of the transimpedance amplifier, and the other end is grounded, the positive input end of the transimpedance amplifier is grounded, and the negative input end of the transimpedance amplifier is used to receive the detection electrical signal through a coaxial high-speed cable.

6. The synchronous viewing line array photoelectric detection system according to claim 5, characterized in that: The signal processing module also includes a second amplifier stage, which is used to reduce the broadband loss of the high-bandwidth detection voltage signal after transmission through the coaxial cable. The second amplifier stage includes a voltage follower and an impedance match, wherein the negative input terminal of the voltage follower is connected to the output terminal of the transimpedance amplifier, the negative input terminal of the voltage follower is connected to the output terminal of the voltage follower, the positive input terminal of the voltage follower is grounded, one end of the impedance match is connected to the output terminal of the voltage follower, and the other end of the impedance match is grounded.

7. The synchronous viewing line array photoelectric detection system according to claim 5, characterized in that: The relationship between the parasitic capacitance, compensation capacitance, feedback resistance and transimpedance amplifier is as follows: Among them, C f is the capacitance value of the compensation capacitor, C i is the capacitance value of the parasitic capacitor, R f is the resistance value of the feedback resistor, and GBWP is the gain-bandwidth product of the transimpedance amplifier.

8. The synchronous viewing line array photoelectric detection system according to claim 1, characterized in that: It also includes a data collector, which is connected to the signal processing module through the coaxial cable and is used to receive the high-bandwidth detection voltage signal output by the signal processing module, wherein the number of collection channels of the data collector is equal to the number of photomultiplier tubes, wherein the analog bandwidth of a single channel is greater than or equal to 400MHz, the sampling accuracy is greater than or equal to 12bit, the storage depth is greater than or equal to 128M points, and the sampling clocks of all channels are synchronized.

9. The synchronous viewing line array photoelectric detection system according to claim 1, characterized in that: It also includes a low ripple DC power supply, which supplies power to the signal processing module, wherein the voltage ripple effective value is less than 60mV.

10. A synchronous framing linear array photoelectric detection device, comprising a framing module and a linear array photoelectric detector, characterized in that: in: The framing module includes a framing lens, a beam splitter, a delay lens group and a framing camera. The framing lens converges the light of the measured area to the beam splitter. The beam splitter divides the converged light into a synchronous framing optical path signal and a detection optical path signal. The detection optical path signal is transmitted to the linear array photoelectric detector. The synchronous framing optical path signal passes through the delay lens group and is imaged on the framing camera to complete synchronous framing and optical calibration. as well as The linear array photoelectric detector includes multiple photomultiplier tubes, which are used to convert multiple detection light path signals of different partitions into detection electrical signals.

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