Wide-wavelength and large-dynamic-range optical signal remote detection device and method

Abstract

The invention discloses a wide-wavelength and large-dynamic-range optical signal remote detection device and method. The wide-wavelength and large-dynamic-range optical signal remote detection device comprises an optical fiber, a metal darkroom, an optical fiber angle adjusting module, a signal input and display module, a signal processing module and a data acquisition and control module. A photomultiplier, a near-ultraviolet photodiode and a near-infrared photodiode are arranged in the metal darkroom; the light emitting end of the optical fiber is arranged on the optical fiber angle adjusting module; the signal processing module is connected with the photomultiplier, the near-ultraviolet photodiode and the near-infrared photodiode; the signal processing module is used for converting signals output by the photomultiplier, the near-ultraviolet photodiode and the near-infrared photodiode into digital signals; and the data acquisition and control module is connected with the signal processing module, the optical fiber angle adjusting module and the signal input and display module. The optical signal remote detection device is wide in detectable wavelength range and high in sensitivity, and not only can detect ignition signals in optical signals, but also can detect weak light in the optical signals.

Description

Technical Field

[0001] The present invention relates to the technical field of photoelectric signal detection, and in particular to a device and method for remotely detecting optical signals with a wide wavelength and a large dynamic range. Background Art

[0002] In some darkroom environments, light signals need to be detected. When detecting light signals, light signals are collected by photodiodes, amplified and converted into digital signals for transmission to a signal processing system, which demodulates the light signals and records the detected light signal data.

[0003] At present, the dynamic range and sensitivity of detection by photodiodes are relatively low. They can only detect the spark signal in the optical signal, but cannot detect the weak light in the optical signal.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a device and method for remote detection of optical signals with a wide wavelength and a large dynamic range, so as to solve the problem that when photodiodes are used to detect optical signals in the prior art, the dynamic range and sensitivity that can be detected by photodiodes are relatively low, and only the ignition signal in the optical signal can be detected, but the weak light in the optical signal cannot be detected.

[0006] The technical solution adopted by the present invention to solve the technical problem is: to provide a wide wavelength and large dynamic range optical signal remote detection device, including: an optical fiber, a metal darkroom, an optical fiber angle adjustment module for driving the light initial emission end of the optical fiber to rotate, a signal input and display module for inputting control signals, a signal processing module and a data acquisition and control module;

[0007] A photomultiplier tube, a near-ultraviolet photodiode and a near-infrared photodiode are arranged in the metal darkroom, and the light incident end of the optical fiber is arranged on the side wall of the metal darkroom;

[0008] The light emitting end of the optical fiber is arranged on the optical fiber angle adjustment module;

[0009] The optical fiber angle adjustment module is arranged in the metal darkroom;

[0010] The signal processing module is connected to the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode, and the signal processing module is used to convert the signal output by the photomultiplier tube, the near-ultraviolet photodiode or the near-infrared photodiode into a digital signal;

[0011] The data acquisition and control module is connected to the signal processing module, the signal input and display module and the optical fiber angle adjustment module. The data acquisition and control module is used to receive the control signal input through the signal input and display module, and send a driving signal according to the control signal. The optical fiber angle adjustment module is used to receive the driving signal and drive the light emitting end of the optical fiber to rotate according to the driving signal, so as to couple the optical signal connected to the optical fiber to one of the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode. The data acquisition and control module is also used to demodulate the digital signal to obtain the optical signal, and record the optical signal data.

[0012] A further configuration of the present invention further includes: an alarm module connected to the data acquisition and control module, wherein a safety threshold is set in the data acquisition and control module, and the data acquisition and control module is further configured to trigger the alarm module to alarm when the optical signal exceeds the safety threshold;

[0013] The data acquisition and control module is also used to output a counting signal when the light signal exceeds the safety threshold, the signal input and display module is also used to receive the counting signal and count according to the counting signal, and the signal input and display module is also used to display the counting value.

[0014] A further configuration of the present invention further includes: a GPS module connected to the data acquisition and control module, and the GPS module is used to determine the position of the weak light in the optical signal.

[0015] According to a further configuration of the present invention, the optical fiber angle adjustment module comprises: a motor and a motor drive unit;

[0016] The motor driving unit is connected to the motor and the signal input and display module. The light emitting end of the optical fiber is arranged on the rotating shaft of the motor. The motor driving unit is used to receive the driving signal and drive the motor to rotate according to the driving signal, so that the motor drives the light emitting end of the optical fiber to rotate.

[0017] According to a further configuration of the present invention, the optical fiber angle adjustment module also includes a first bracket, the first bracket is arranged in the metal darkroom, the motor is installed on the first bracket, and the light receiving end of the photomultiplier tube, the light receiving end of the near-ultraviolet photodiode and the light receiving end of the near-infrared photodiode are arranged on the first bracket.

[0018] According to a further configuration of the present invention, a fiber optic interface is provided on a side wall of the metal darkroom, and a light incident end of the optical fiber is installed in the fiber optic interface.

[0019] A further configuration of the present invention further includes: a power supply module and a high-voltage voltage divider module, wherein the power supply module is connected to the high-voltage voltage divider module, and the high-voltage voltage divider module is connected to the photomultiplier tube.

[0020] A further configuration of the present invention further includes:

[0021] A high-voltage voltage divider module, wherein the high-voltage voltage divider module is connected to the photomultiplier tube;

[0022] A power supply module connected to the high voltage voltage divider module;

[0023] A GPRS module connected to the data acquisition and control module, the GPRS module is used to receive optical signal data when the optical signal exceeds the safety threshold, and transmit the received optical signal data to a remote monitoring terminal via a base station;

[0024] A WiFi module is connected to the data acquisition and control module, and is used to receive optical signal data when the optical signal exceeds the safety threshold, and transmit the received optical signal data to a remote monitoring terminal via the Internet.

[0025] In a further configuration of the present invention, the signal processing module further includes:

[0026] A first signal processing unit, connected to the photomultiplier tube and the data acquisition and control module, and configured to convert the signal output by the photomultiplier tube into a digital signal;

[0027] The second signal processing unit is connected to the near-ultraviolet photodiode and the near-infrared photodiode, and is used for converting the signal output by the near-ultraviolet photodiode or the near-infrared photodiode into a digital signal.

[0028] The present invention also provides a method for applying the above-mentioned wide wavelength and large dynamic range optical signal remote detection device, comprising:

[0029] Accessing an optical signal via the optical fiber;

[0030] Receive a control signal inputted through the signal input and display module, and send a drive signal to the optical fiber angle adjustment module according to the control signal, wherein the optical fiber angle adjustment module is used to receive the drive signal and drive the light emitting end of the optical fiber to rotate according to the drive signal, so as to couple the optical signal connected by the optical fiber to one of the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode;

[0031] Converting the signals output by the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode into digital signals;

[0032] The digital signal is demodulated to obtain an optical signal, and the optical signal data is recorded.

[0033] A further arrangement of the present invention comprises, after the step of demodulating the digital signal to obtain an optical signal and recording the optical signal data:

[0034] alarm when the optical signal exceeds the safety threshold, wherein the safety threshold is preset;

[0035] sending a counting signal when the optical signal exceeds the safety threshold;

[0036] The counting signal is received and counting is performed.

[0037] The beneficial effects of the present invention are:

[0038] The present invention discloses a device and method for remotely detecting optical signals with a wide wavelength and a large dynamic range. When the remotely detecting optical signals with a wide wavelength and a large dynamic range detects optical signals, the wavelength range of the detectable optical signals covers the wavelength detection range of a photomultiplier tube, the wavelength detection range of a near-ultraviolet photodiode, and the wavelength detection range of a near-infrared photodiode. Therefore, the remotely detecting optical signals with a wide wavelength and a large dynamic range have a wide detectable wavelength range and high sensitivity, and can detect not only ignition signals in optical signals, but also weak light in optical signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0040] Figure 1 It is a principle block diagram of the optical signal remote detection device with wide wavelength and large dynamic range of the present invention.

[0041] Figure 2 It is a diagram of the internal structure of a wide wavelength and large dynamic range optical signal remote detection device in one embodiment of the present invention.

[0042] Figure 3 It is a diagram of the internal structure of a metal darkroom in one embodiment of the present invention.

[0043] Figure 4 It is a flow chart of the optical signal remote detection device with wide wavelength and large dynamic range of the present invention.

[0044] Figure 5It is a flow chart of the present invention for judging whether the optical signal exceeds the safety threshold.

[0045] Figure 6 It is a diagram of the counting principle when the optical signal exceeds the safety threshold in one embodiment of the present invention.

[0046] Figure 7 The invention is a principle block diagram of an internal ignition detection interlock device of a klystron in the prior art.

[0047] The marks in the accompanying drawings are: 10, optical fiber; 11, optical fiber angle adjustment module; 111, motor; 112, motor drive unit; 113, first bracket; 12, photomultiplier tube; 13, near-ultraviolet photodiode; 14, near-infrared photodiode; 15, signal processing module; 151, first signal conditioning unit; 152, second signal conditioning unit; 16, data acquisition and control module; 17, signal input and display module; 171, touch screen; 18, alarm module; 181, buzzer; 182, LED lamp beads; 19, GPS module; 20, GPRS module; 21, WiFi module; 22, remote monitoring terminal; 23, power module; 24, high-voltage voltage divider module; 25, metal darkroom; 251, optical fiber interface; 26, cooling fan; 27, shell. DETAILED DESCRIPTION

[0048] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0049] When the klystron is ignited, the ignition signal in the klystron needs to be detected to ensure the safe application of the klystron. At present, when the optical signal of the klystron is detected, the optical signal in the klystron is collected by a photodiode to generate an ignition signal, and the ignition signal is amplified and converted into a digital signal and transmitted to the signal processing system, which demodulates the ignition signal and records the ignition situation.

[0050] The application document with publication number "CN109932621B" discloses a klystron internal ignition detection interlock device, such as Figure 7As shown, the internal ignition detection interlocking device of the klystron includes: an ignition signal acquisition system, an ignition signal processing system, a timing system and an interlocking system; the ignition signal acquisition system includes a metal darkroom, a photodiode and a signal amplifier; the ignition signal processing system includes a signal acquisition card and a signal processing system; the photodiode acquires the ignition condition inside the klystron and generates an ignition signal, which is amplified by the signal amplifier and transmitted to the ignition signal processing system; the signal acquisition card acquires the amplified ignition signal and converts it into a digital signal and transmits it to the signal processing system; the signal processing system demodulates the ignition signal and records the ignition condition.

[0051] Although photodiodes can be used to detect optical signals, the wavelength range and sensitivity that photodiodes can detect are relatively low. They can only detect spark signals in optical signals, but cannot detect weak light in optical signals.

[0052] Based on the above problems, Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a remote detection device for optical signals with wide wavelength and large dynamic range, which may include an optical fiber 10, a metal darkroom 25, an optical fiber angle adjustment module 11, a signal input and display module 17, a signal processing module 15 and a data acquisition and control module 16.

[0053] The metal darkroom 25 is provided with a photomultiplier tube 12, a near-ultraviolet photodiode 13 and a near-infrared photodiode 14. The light incident end of the optical fiber 10 is arranged on the side wall of the metal darkroom 25; the light emitting end of the optical fiber 10 is arranged on the optical fiber angle adjustment module 11, and the optical fiber angle adjustment module 11 is arranged in the metal darkroom 25. The optical fiber angle adjustment module 11 is used to drive the light emitting end of the optical fiber 10 to rotate to change the emission angle of the emitted light; the signal input and display module 17 is used to input control signals; the signal processing module 15 is connected to the photomultiplier tube 12, the near-ultraviolet photodiode 13 and the near-infrared photodiode 14, and the signal processing module 15 is used to adjust the photomultiplier tube 12, the near-ultraviolet photodiode 13 or the near-infrared photodiode 14. The signal output by the external photodiode 14 is converted into a digital signal; the data acquisition and control module 16 is connected to the signal processing module 15, the optical fiber angle adjustment module 11 and the signal input and display module 17. The data acquisition and control module 16 is used to receive the control signal input by the signal input and display module 17, and send a driving signal according to the control signal. The optical fiber angle adjustment module 11 is used to receive the driving signal and drive the light emitting end of the optical fiber 10 to rotate according to the driving signal, so as to couple the optical signal received by the optical fiber 10 to one of the photomultiplier tube 12, the near-ultraviolet photodiode 13 and the near-infrared photodiode 14. The data acquisition and control module 16 is also used to demodulate the digital signal to obtain the optical signal and record the optical signal data.

[0054] Specifically, the optical fiber 10 is a quartz optical fiber. The metal darkroom 25, the signal processing module 15 and the data acquisition and control module 16 can be arranged in the same housing 27, and the signal output end of the photomultiplier tube 12, the signal output end of the near-ultraviolet photodiode 13 and the signal output end of the near-infrared photodiode 14 can be led out through a signal line, so that the photomultiplier tube 12, the near-ultraviolet photodiode 13 and the near-infrared photodiode 14 are connected to the signal processing module 15 through the signal line.

[0055] When the optical signal remote detection device with wide wavelength and large dynamic range is used in a specific application, the touch screen 171 in the signal input and display module 17 of the on-site personnel inputs a control signal, the data acquisition and control module 16 receives the control signal and outputs a driving signal to the optical fiber angle adjustment module 11 according to the control signal, and the optical fiber angle adjustment module 11 drives the light emitting end of the optical fiber 10 to rotate according to the driving signal, and couples the optical signal received by the optical fiber 10 to one of the photomultiplier tube 12, the near-ultraviolet photodiode 13 and the near-infrared photodiode 14 (specifically related to the optical signal to be detected, if the wavelength band of the optical signal to be detected is within the wavelength band of the optical signal detectable by the photomultiplier tube 12, then the optical fiber angle adjustment module 11 drives the light emitting end of the optical fiber 10 to rotate to a position where the optical signal can be coupled to the photomultiplier tube 12, if the optical signal to be detected is within the wavelength band of the optical signal detectable by the photomultiplier tube 12, then the optical fiber angle adjustment module 11 drives the light emitting end of the optical fiber 10 to rotate to a position where the optical signal can be coupled to the photomultiplier tube 12, When the wavelength of the signal is within the wavelength of the optical signal detectable by the near-ultraviolet photodiode 13, the optical fiber angle adjustment module 11 drives the light emitting end of the optical fiber 10 to rotate to a position where the optical signal can be coupled to the near-ultraviolet photodiode 13; if the wavelength of the optical signal to be detected is within the wavelength of the optical signal detectable by the near-infrared photodiode 14, the optical fiber angle adjustment module 11 drives the light emitting end of the optical fiber 10 to rotate to a position where the optical signal can be coupled to the near-infrared photodiode 14); thereafter, the signal processing module 15 converts the signals output by the photomultiplier tube 12, the near-ultraviolet photodiode 13 and the near-infrared photodiode 14 into digital signals, and transmits the digital signals to the data acquisition and control module 16; finally, the data acquisition and control module 16 demodulates the digital signals to obtain optical signals, and records the optical signal data.

[0056] It should be noted that the control signal can be the control fiber optic angle adjustment module 11 inputted through the signal input and display module 17 to adjust the rotation angle of the light emitting end of the optical fiber 10, or it can be the switching of modes, that is, automatic mode or manual mode. In the manual mode, the control fiber optic angle adjustment module 11 inputted through the signal input and display module 17 adjusts the rotation angle of the light emitting end of the optical fiber 10 to switch the signal collection needs of different wavelengths and different light intensities; in the automatic mode, the data acquisition and control module 16 automatically controls the fiber optic angle adjustment module 11 to adjust the rotation angle of the light emitting end of the optical fiber 10 according to the obtained optical signal to switch the signal collection needs of different wavelengths and different light intensities.

[0057] In this embodiment, when detecting the optical signal, the wavelength range of the detectable optical signal covers the wavelength detection range of the photomultiplier tube 12, the wavelength detection range of the near-ultraviolet photodiode 13, and the wavelength detection range of the near-infrared photodiode 14. Therefore, the optical signal remote detection device with wide wavelength and large dynamic range has a wide detectable wavelength range and high sensitivity, and can detect not only the ignition signal in the optical signal, but also the weak light in the optical signal.

[0058] Specifically, the photomultiplier tube 12 can detect light intensities ranging from a few femtowatts to several thousand picowatts, and the detection wavelength is 200-1000nm; the near-ultraviolet photodiode 13 can detect wavelengths ranging from 200-1100nm; and the near-infrared photodiode 14 can detect wavelengths ranging from 800-1700nm.

[0059] Furthermore, if Figure 1 , Figure 2 As shown, the optical signal remote detection device with wide wavelength and large dynamic range also includes an alarm module 18, which is connected to the data acquisition and control module 16. A safety threshold is set in the data acquisition and control module 16. The data acquisition and control module 16 is also used to trigger the alarm module 18 to alarm when the optical signal exceeds the safety threshold; the data acquisition and control module 16 is also connected to the signal input and display module 17. The data acquisition and control module 16 is also used to output a counting signal when the optical signal exceeds the safety threshold. The signal input and display module 17 is also used to receive the counting signal and count according to the counting signal to obtain the counting value. The signal input and display module 17 is also used to display the counting value.

[0060] Specifically, the safety threshold is preset in advance in the data acquisition and control module 16. The alarm module 18 can be a module composed of a buzzer 181 and an LED (Light Emitting Diode) lamp bead 182. The buzzer 181 and the LED lamp bead 182 can be respectively arranged on the side wall of the housing 27, and the buzzer 181 and the LED lamp bead 182 are respectively connected to the data acquisition and control module 16. When the light signal exceeds the safety threshold, the data acquisition and control module 16 triggers the buzzer 181 and lights up the LED lamp bead 182 to alarm, and the data acquisition and control module 16 also outputs a counting signal to the signal input and display module 17, wherein the counting signal is a high-level signal. When counting, the signal input and display module 17 counts a number each time it receives a high-level signal, and displays the counted value.

[0061] like Figure 6 As shown in the figure, it is the counting principle diagram when the optical signal exceeds the safety threshold. Figure 6It can be seen from the figure that after setting the safety threshold, the optical signal ( Figure 6 When the optical signal exceeds the safety threshold, Figure 6 It can be seen that after the light signal exceeds the safety threshold, the data acquisition and control module 16 outputs a high level to the signal input and display module 17, and the signal input and display module 17 starts counting when receiving the high level signal; when the light signal does not exceed the safety threshold, the data acquisition and control module 16 outputs a low level signal to the signal input and display module 17, and the signal input and display module 17 stops counting when receiving the low level signal.

[0062] Among them, when counting, the number of times the signal input and display module 17 receives a high-level signal can be counted (the number of times the light signal exceeds the safety threshold can be seen by counting the number of times the high-level signal is received), and the time for each time the signal input and display module 17 receives a high-level signal can be counted (the time when the light signal exceeds the safety threshold can be seen by counting the time each time a high-level signal is received, and the number of times the light signal exceeds the safety threshold can also be seen).

[0063] In this embodiment, when the optical signal exceeds the safety threshold, the alarm module 18 will issue an alarm prompt, thereby increasing the safety of the optical signal remote detection device with a wide wavelength and a large dynamic range. At the same time, when the optical signal exceeds the safety threshold, counting can also be performed. Therefore, on-site personnel can determine whether the optical signal exceeds the safety threshold based on the signal input and the counting displayed by the display module 17.

[0064] In a specific embodiment, when counting is performed by the signal input and display module 17 , the initial value of the count is 0, and each time the light signal exceeds the safety threshold, the signal input and display module 17 accumulates 1 based on the initial value.

[0065] Furthermore, the optical signal remote detection device with wide wavelength and large dynamic range also includes a GPS module 19, which is connected to the data acquisition and control module 16, and is used to determine the position of weak light in the optical signal.

[0066] In this embodiment, the GPS module 19 may be disposed in the housing 27 , and the position of the weak light in the optical signal may be determined by the GPS module 19 .

[0067] In some embodiments, Figure 3 As shown, the optical fiber angle adjustment module 11 may include a motor 111 and a motor drive unit 112; the motor drive unit 112 is connected to the motor 111 and the data acquisition and control module 16, and the motor drive unit 112 is used to receive a drive signal and drive the motor 111 to rotate according to the drive signal, so that the motor 111 drives the light emitting end of the optical fiber 10 to rotate.

[0068] Specifically, the light emitting end of the optical fiber 10 is installed on the rotating shaft of the motor 111, and the axis of the rotating shaft of the motor 111 is approximately perpendicular to the axis of the optical fiber 10, so that the angle of the light emitting end of the optical fiber 10 can be changed when the rotating shaft of the motor 111 rotates. The photomultiplier tube 12, the near-ultraviolet photodiode 13 and the near-infrared photodiode 14 are arranged side by side in sequence and roughly surround the light emitting end of the optical fiber 10, and the light receiving ends of the photomultiplier tube 12, the near-ultraviolet photodiode 13 and the near-infrared photodiode 14 are close to the light emitting end of the optical fiber 10.

[0069] In this embodiment, the motor 111 may be a stepper motor 111. The motor drive unit 112 may include a motor drive chip. When the motor 111 is driven, the motor drive chip receives a drive signal and drives the motor 111 to rotate according to the drive signal. The model of the motor drive chip may be, but is not limited to, a motor drive chip such as L298N, TB6612FNG, etc.

[0070] Furthermore, if Figure 3 As shown, the optical fiber angle adjustment module 11 also includes a first bracket 113, the first bracket 113 is arranged in the metal darkroom 25, the motor 111 is installed on the first bracket 113, and the light receiving end of the photomultiplier tube 12, the light receiving end of the near-ultraviolet photodiode 13 and the light receiving end of the near-infrared photodiode 14 are arranged on the first bracket 113.

[0071] In this embodiment, the first bracket 113 can be any structure that can support the motor 111 and the light receiving end of the photomultiplier tube 12, the light receiving end of the near-ultraviolet photodiode 13 and the light receiving end of the near-infrared photodiode 14, and no further restrictions are made here.

[0072] When the first bracket 113 is installed, it can be installed in the metal darkroom 25 in a detachable manner, for example, the first bracket 113 can be installed in the metal darkroom 25 in a threaded manner. Similarly, when the motor 111 is installed, it can be installed on the first bracket 113 in a detachable manner. The light receiving end of the photomultiplier tube 12, the light receiving end of the near-ultraviolet photodiode 13, and the light receiving end of the near-infrared photodiode 14 can be installed at the end of the first bracket 113 in a detachable manner.

[0073] In some embodiments, Figure 2 , Figure 3 As shown, an optical fiber interface 251 is provided on the side wall of the metal darkroom 25 , and the light incident end of the optical fiber 10 is installed in the optical fiber interface 251 .

[0074] Specifically, the optical fiber interface 251 is embedded in the side wall of the metal darkroom 25, wherein when installing the light incident end of the optical fiber 10, it can be directly installed in the optical fiber interface 251, so that the installation of the optical fiber 10 is simple and convenient, and it is easy to replace the optical fiber 10 when it fails.

[0075] In some embodiments, Figure 1 , Figure 2 As shown, the optical signal remote detection device with wide wavelength and large dynamic range also includes a power module 23 and a high-voltage voltage divider module 24 . The power module 23 is connected to the high-voltage voltage divider module 24 , and the high-voltage voltage divider module 24 is connected to the photomultiplier tube 12 .

[0076] In this embodiment, when power is supplied to the photomultiplier tube 12 , the power supply module 23 outputs a power supply voltage, and the power supply voltage is then output to the photomultiplier tube 12 after passing through the high-voltage voltage divider module 24 .

[0077] In some embodiments, Figure 1 As shown, the optical signal remote detection device with wide wavelength and large dynamic range also includes a GPRS (General Packet Radio Service) module and a WiFi module 21. The GPRS module 20 is connected to the data acquisition and control module 16. The GPRS module 20 is used to receive optical signal data when the optical signal exceeds a safety threshold, and transmit the received optical signal data to the remote monitoring terminal 22 via the base station; the WiFi module 21 is connected to the data acquisition and control module 16. The WiFi module 21 is used to receive optical signal data when the optical signal exceeds a safety threshold, and transmit the received optical signal data to the remote monitoring terminal 22 via the Internet.

[0078] In this embodiment, when the optical signal exceeds the safety threshold, not only can the optical signal data when the optical signal exceeds the safety threshold be transmitted to the remote monitoring terminal 22 through the GPRS module 20, but the optical signal data when the optical signal exceeds the safety threshold can also be transmitted to the remote monitoring terminal 22 through the WiFi module 21; wherein, the GPRS module 20 and the WiFi module 21 are commonly used modules in the prior art and will not be described in detail here; the remote monitoring terminal 22 can be a terminal device such as a mobile phone or a tablet.

[0079] In some embodiments, the data acquisition and control module 16 may be, but is not limited to, a module built with the XC7Z010-2CLG225I chip as a core device.

[0080] In some embodiments, Figure 1As shown, the signal processing module 15 may include a first signal conditioning unit 151 and a second signal conditioning unit 152, wherein the first signal conditioning unit 151 is connected to the photomultiplier tube 12, and the second signal conditioning unit 152 is connected to the near-ultraviolet photodiode 13 and the near-infrared photodiode 14, the first signal conditioning unit 151 is used to convert the signal output by the photomultiplier tube 12 into a digital signal, and the second signal conditioning unit 152 is used to convert the signal output by the near-ultraviolet photodiode 13 or the near-infrared photodiode 14 into a digital signal.

[0081] In this embodiment, when the first signal conditioning unit 151 converts the signal output by the photomultiplier tube 12 into a digital signal, it isolates the signal output by the photomultiplier tube 12 (isolates direct current), amplifies the signal, filters and shapes it, and then performs analog-to-digital conversion to output a digital signal. When performing the analog-to-digital conversion, a chip with model number AD9268 but not limited to it may be used. The first signal conditioning unit 151 may be any circuit structure that can realize the above functions, and no further limitation is made here.

[0082] In this embodiment, when the second signal conditioning unit 152 converts the signal output by the near ultraviolet photodiode 13 or the near infrared photodiode 14 into a digital signal, it isolates the signal output by the near ultraviolet photodiode 13 or the near infrared photodiode 14 (isolates direct current), amplifies the signal, filters and shapes it, and then performs analog-to-digital conversion to output the digital signal. When performing the analog-to-digital conversion, a chip with model number AD9268 but not limited to it can be used. The second signal conditioning unit 152 can be any circuit structure that can achieve the above functions, and no further restrictions are made here.

[0083] In some embodiments, the signal input and display module 17 may be a commonly used touch display module with a touch screen 171, wherein the touch screen 171 is disposed outside the housing 27, that is, the control signal may be input through the touch screen 171 in the touch display module, and the count value may also be displayed by the touch screen 171 in the touch display module. Of course, the signal input and display module may also be a remote monitoring terminal 22, that is, the control signal may be input through the remote monitoring terminal 22, and the count value may also be displayed by the remote monitoring terminal 22. For example, when the remote monitoring terminal 22 is a mobile phone, the control signal may be input through the mobile phone, and the count value may also be displayed by the mobile phone.

[0084] When used, the wide-wavelength and large-dynamic-range optical signal remote detection device can be applied to, but not limited to, light monitoring in a general closed cavity, for example, ignition monitoring of microwave structure devices of particle accelerators, ignition monitoring of high-voltage plates in vacuum cavities, ignition detection inside klystrons, and weak light monitoring of sensors in other systems.

[0085] In some embodiments, a heat dissipation fan 26 is further installed in the housing 27 to reduce the operating temperature in the housing 27 through the heat dissipation fan 26 .

[0086] In some embodiments, Figure 4 As shown, the present invention also provides a method for applying the optical signal remote detection device with wide wavelength and large dynamic range as described above, the method comprising:

[0087] S100, accessing optical signals through optical fibers;

[0088] S200, receiving a control signal inputted by the signal input and display module, and sending a driving signal to the optical fiber angle adjustment module according to the control signal, wherein the optical fiber angle adjustment module is used to receive the driving signal and drive the light emitting end of the optical fiber to rotate according to the driving signal, so as to couple the optical signal connected by the optical fiber to one of the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode;

[0089] S300, converting the signals output by the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode into digital signals;

[0090] S400, demodulate the digital signal to obtain an optical signal, and record the optical signal data.

[0091] In this example, after the optical fiber is connected to the optical signal, the on-site personnel input the control signal through the signal input and display module, the data acquisition and control module sends a driving signal according to the control signal, the optical fiber angle adjustment module receives the driving signal and drives the light emitting end of the optical fiber to rotate according to the driving signal, and couples the optical signal connected to the optical fiber to one of the photomultiplier tube, near-ultraviolet photodiode and near-infrared photodiode; thereafter, the signal processing module converts the signal output by the photomultiplier tube, near-ultraviolet photodiode and near-infrared photodiode into a digital signal, and transmits the digital signal to the data acquisition and control module; finally, the data acquisition and control module demodulates the digital signal to obtain the optical signal, and records the optical signal data.

[0092] It can be seen that when detecting optical signals, the wavelength range of detectable optical signals covers the wavelength detection range of photomultiplier tubes, the wavelength detection range of near-ultraviolet photodiodes, and the wavelength detection range of near-infrared photodiodes. Therefore, the optical signal remote detection device with wide wavelength and large dynamic range has a wide detectable wavelength range and high sensitivity, and can not only detect the ignition signal in the optical signal, but also detect the weak light in the optical signal.

[0093] In some embodiments, Figure 4 , Figure 5 As shown, after the step of demodulating the digital signal to obtain an optical signal and recording the optical signal data, the method includes:

[0094] S500, alarming when the optical signal exceeds a safety threshold, wherein the safety threshold is preset;

[0095] S600, sending a counting signal when the optical signal exceeds a safety threshold;

[0096] S700: Receive a counting signal and perform counting.

[0097] Specifically, the safety threshold is preset in the data acquisition and control module in advance. The alarm module can be a module composed of a buzzer and an LED (Light Emitting Diode) lamp bead, the buzzer and the LED lamp bead can be respectively arranged on the side wall of the housing, and the buzzer and the LED lamp bead are respectively connected to the data acquisition and control module, when the light signal exceeds the safety threshold, the data acquisition and control module triggers the buzzer and lights up the LED lamp bead to alarm, and the data acquisition and control module also outputs a counting signal to the signal input and display module, wherein the counting signal is a high level signal, when counting, the signal input and display module counts a number each time it receives a high level signal, and displays the count value.

[0098] In this embodiment, the alarm module will issue an alarm prompt when the optical signal exceeds the safety threshold, thereby increasing the safety of the optical signal remote detection device with a wide wavelength and a large dynamic range. At the same time, the optical signal can also be counted when it exceeds the safety threshold. Therefore, on-site personnel can determine the number of times the optical signal exceeds the safety threshold based on the signal input and the count displayed on the touch screen of the display module.

[0099] Here, it should be pointed out that the description of the embodiment of the above wide wavelength and large dynamic range optical signal remote detection method is similar to the description of the embodiment of the above wide wavelength and large dynamic range optical signal remote detection device, and has similar beneficial effects as the above wide wavelength and large dynamic range optical signal remote detection device. For technical details not disclosed in the embodiment of the wide wavelength and large dynamic range optical signal remote detection method in this embodiment, please refer to the description of the embodiment of the wide wavelength and large dynamic range optical signal remote detection device of the present invention for understanding.

[0100] In summary, the present invention provides a device and method for remote detection of optical signals with a wide wavelength and a large dynamic range, which has the following beneficial effects:

[0101] When detecting optical signals, the wavelength range of detectable optical signals covers the wavelength detection range of photomultiplier tubes, the wavelength detection range of near-ultraviolet photodiodes, and the wavelength detection range of near-infrared photodiodes. Therefore, the optical signal remote detection device with wide wavelength and large dynamic range has a wide detectable wavelength range and high sensitivity, and can detect not only the ignition signal in the optical signal, but also the weak light in the optical signal.

[0102] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A remote detection device for optical signals with wide wavelength and large dynamic range, characterized in that: include: An optical fiber, a metal darkroom, an optical fiber angle adjustment module for driving the light emitting end of the optical fiber to rotate, a signal input and display module for inputting control signals, a signal processing module, and a data acquisition and control module; A photomultiplier tube, a near-ultraviolet photodiode and a near-infrared photodiode are arranged in the metal darkroom, and the light incident end of the optical fiber is arranged on the side wall of the metal darkroom; The light emitting end of the optical fiber is arranged on the optical fiber angle adjustment module; The optical fiber angle adjustment module is arranged in the metal darkroom; The signal processing module is connected to the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode, and the signal processing module is used to convert the signal output by the photomultiplier tube, the near-ultraviolet photodiode or the near-infrared photodiode into a digital signal; The data acquisition and control module is connected to the signal processing module, the signal input and display module and the optical fiber angle adjustment module. The data acquisition and control module is used to receive the control signal input through the signal input and display module, and send a driving signal according to the control signal. The optical fiber angle adjustment module is used to receive the driving signal and drive the light emitting end of the optical fiber to rotate according to the driving signal, so as to couple the optical signal connected to the optical fiber to one of the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode. The data acquisition and control module is also used to demodulate the digital signal to obtain the optical signal, and record the optical signal data.

2. The optical signal remote detection device with wide wavelength and large dynamic range according to claim 1, characterized in that: Also includes: An alarm module connected to the data acquisition and control module, wherein a safety threshold is set in the data acquisition and control module, and the data acquisition and control module is further used to trigger the alarm module to alarm when the optical signal exceeds the safety threshold; The data acquisition and control module is also used to output a counting signal when the light signal exceeds the safety threshold, the signal input and display module is also used to receive the counting signal and count according to the counting signal, and the signal input and display module is also used to display the counting value.

3. The optical signal remote detection device with wide wavelength and large dynamic range according to claim 1, characterized in that: Also includes: The GPS module is connected to the data acquisition and control module, and the GPS module is used to determine the position of the weak light in the optical signal.

4. The optical signal remote detection device with wide wavelength and large dynamic range according to claim 1, characterized in that: The optical fiber angle adjustment module comprises: a motor and a motor driving unit; The motor driving unit is connected to the motor and the signal input and display module. The light emitting end of the optical fiber is arranged on the rotating shaft of the motor. The motor driving unit is used to receive the driving signal and drive the motor to rotate according to the driving signal, so that the motor drives the light emitting end of the optical fiber to rotate.

5. The optical signal remote detection device with wide wavelength and large dynamic range according to claim 4, characterized in that: The optical fiber angle adjustment module also includes a first bracket, which is arranged in the metal darkroom, the motor is installed on the first bracket, and the light receiving end of the photomultiplier tube, the light receiving end of the near-ultraviolet photodiode and the light receiving end of the near-infrared photodiode are arranged on the first bracket.

6. The optical signal remote detection device with wide wavelength and large dynamic range according to claim 3, characterized in that: An optical fiber interface is arranged on the side wall of the metal darkroom, and the light incident end of the optical fiber is installed in the optical fiber interface.

7. The optical signal remote detection device with wide wavelength and large dynamic range according to claim 1, characterized in that: Also includes: A high-voltage voltage divider module, wherein the high-voltage voltage divider module is connected to the photomultiplier tube; A power supply module connected to the high voltage voltage divider module; A GPRS module connected to the data acquisition and control module, the GPRS module is used to receive optical signal data when the optical signal exceeds the safety threshold, and transmit the received optical signal data to a remote monitoring terminal via a base station; A WiFi module is connected to the data acquisition and control module, and is used to receive optical signal data when the optical signal exceeds the safety threshold, and transmit the received optical signal data to a remote monitoring terminal via the Internet.

8. The optical signal remote detection device with wide wavelength and large dynamic range according to claim 1, characterized in that: The signal processing module also includes: A first signal processing unit, connected to the photomultiplier tube and the data acquisition and control module, and configured to convert the signal output by the photomultiplier tube into a digital signal; The second signal processing unit is connected to the near-ultraviolet photodiode and the near-infrared photodiode, and is used for converting the signal output by the near-ultraviolet photodiode or the near-infrared photodiode into a digital signal.

9. A method for using the optical signal remote detection device with wide wavelength and large dynamic range as claimed in any one of claims 1 to 8, characterized in that: include: Accessing an optical signal via the optical fiber; Receive a control signal inputted through the signal input and display module, and send a drive signal to the optical fiber angle adjustment module according to the control signal, wherein the optical fiber angle adjustment module is used to receive the drive signal and drive the light emitting end of the optical fiber to rotate according to the drive signal, so as to couple the optical signal connected by the optical fiber to one of the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode; Converting the signals output by the photomultiplier tube, the near-ultraviolet photodiode and the near-infrared photodiode into digital signals; The digital signal is demodulated to obtain an optical signal, and the optical signal data is recorded.

10. The method for remote detection of optical signals with wide wavelength and large dynamic range according to claim 9, characterized in that: After the step of demodulating the digital signal to obtain an optical signal and recording the optical signal data, the method further comprises: alarm when the optical signal exceeds the safety threshold, wherein the safety threshold is preset; sending a counting signal when the optical signal exceeds the safety threshold; The counting signal is received and counting is performed.

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