Single-probe laser information field detection system and method

Abstract

The invention relates to a single-probe laser information field detection system and method, belongs to the technical field of laser information detection, and solves the problems of low precision, complex structure and low reliability of an existing detection method. The invention discloses a single-probe laser information field detection system. A laser receiving assembly receives an optical signal and converts the optical signal into an instruction voltage signal and an energy voltage signal; the signal conditioning box converts the instruction voltage signal and the energy voltage signal into digital signals; the data processing terminal receives the digital signals through the wireless data receiving assembly and obtains laser information field parameters based on the digital signals, and the laser receiving assembly and the signal conditioning box are installed together in a combined mode and erected at the center position in front of the detection target through the support. Parameter detection of two-axis deviation between the center line and the aiming line of a laser information field, a zoom curve and coded information can be completed through one laser receiver, the detection precision is improved, the structural complexity is reduced, and the reliability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser information detection, and in particular to a single-probe laser information field detection system and method. Background Art

[0002] Laser beam-riding guidance is a remote control guidance method with humans in the loop and semi-automatic tracking. In this guidance method, when the missile is launched, the laser launch device emits a laser beam to illuminate the target, and the center line of the laser beam coincides with the aiming line. The aircraft enters the laser beam immediately after launch and always keeps flying in the laser beam until it hits the target. In order to achieve the guidance of the aircraft, the laser beam must be spatially frequency encoded to form a laser information field. During the flight of the aircraft, the laser receiving component at the tail of the aircraft continuously receives and decodes the laser information, calculates the direction and size of the aircraft's deviation from the center line of the laser beam, and then forms a control instruction to control the aircraft to always fly along the center line of the laser beam. In order to ensure that the laser irradiance received by the aircraft meets the requirements, the laser launch device continuously zooms the laser information field through the zoom system, so that the laser information field spot diameter at the position of the aircraft at each moment during the entire flight process is basically a certain value.

[0003] Whether the laser information field can work properly is directly related to the hit effect of the aircraft. Therefore, how to effectively detect the working parameters of the laser information field, such as the two-axis deviation, irradiance, zoom curve and coding information, has become an important issue in the guidance and launch of aircraft.

[0004] In the current technical solution, the multi-probe detection method is mainly used. That is, 3 to 5 laser receivers are placed at different positions on the detection target surface, and the working parameters of the laser information field are obtained by calculating the information received by the laser receivers at different positions.

[0005] The multi-probe detection method has two main shortcomings: first, it is difficult to achieve a high installation accuracy when installing multiple laser receivers at different positions on the detection target surface, which will affect the accuracy of obtaining laser information; second, the detection system has a complex structure, high cost, difficult deployment, and low reliability. Summary of the invention

[0006] In view of the above analysis, the embodiments of the present invention aim to provide a single-probe laser information field detection system and method to solve the problems of low detection accuracy, complex structure, low reliability, etc. in the existing detection methods.

[0007] On the one hand, an embodiment of the present invention provides a single-probe laser information field detection system, comprising: a laser receiving component, a signal conditioning box, a wireless data receiving component, a data processing terminal, a detection target and a bracket, wherein the laser receiving component is used to receive the optical signal of the laser information field and convert the optical signal into a command voltage signal and an energy voltage signal; the signal conditioning box is used to convert the command voltage signal and the energy voltage signal into a digital signal; and the data processing terminal is used to receive the digital signal via the wireless data receiving component and obtain laser information field parameters based on the digital signal, wherein the laser receiving component is installed together with the signal conditioning box and is erected at the center position in front of the detection target through the bracket.

[0008] The beneficial effects of the above technical solution are as follows: the detection system can complete the detection of all parameter indicators such as the two-axis deviation between the center line of the laser information field and the aiming line, the zoom curve, the coding information, etc. through a laser receiver, and solves the problem of reduced installation accuracy caused by the installation position deviation of multiple laser receivers, thereby reducing the impact on the accuracy of the acquired laser information, simplifying the system structure, reducing costs, greatly reducing the difficulty of deployment, and improving reliability.

[0009] Based on the further improvement of the above system, the detection target is set at a certain distance from the platform, so that the target surface of the detection target is perpendicular to the line connecting the launch platform and the detection target, and the visibility between the launch platform and the detection target is guaranteed, which is used to provide a reference benchmark for laser information field detection and serve as an aiming object of the laser launch device on the launch platform. The target surface of the detection target includes a center position, point A, point B, point C, point D, point E and point F, wherein the center position is printed with a crosshair, wherein the laser receiver in the laser receiving assembly is located at the center position of the crosshairs, so that the laser receiver surface Toward the position of the launching platform and the center line of the optical channel of the laser receiver is perpendicular to the target surface; the points A, B, C and D are printed with crosshairs, which are respectively arranged at positions at predetermined distances above, to the right, below and to the left of the center of the crosshairs; and the points E and F are printed with crosshairs, which are respectively arranged at intersection positions at predetermined distances from the center of the crosshairs in the third quadrant and the first quadrant of the target surface, wherein the crosshairs at the positions of the points A, B, C, D, E and F are smaller than the crosshairs at the center position.

[0010] Based on the further improvement of the above system, the material of the target surface includes wooden material or a lightweight material with a certain strength.

[0011] Based on the further improvement of the above system, the laser receiving component includes a laser receiver, a coordinate solution circuit and an energy solution circuit, wherein the laser receiver is used to receive the modulated light signal of the laser information field and convert the light signals of different frequencies into electrical pulse signals of corresponding frequencies; the coordinate solution circuit is used to convert the electrical pulse signal into command voltage signals Uy and Uz; and the energy solution circuit is used to convert the electrical pulse signal into an energy voltage signal Ue through a transfer function.

[0012] Based on further improvements of the above system, the laser receiver includes an optical lens, an infrared filter, a photodiode and an amplifying and filtering circuit, wherein the optical lens is used to converge the modulated laser signal of the laser information field onto the surface of the infrared filter; the infrared filter is used to perform optical filtering on the converged laser signal before sending it to the photosensitive surface of the photodiode; and the photodiode is used to convert the filtered laser signal into an electrical pulse signal; the amplifying and filtering circuit is used to amplify and filter the electrical pulse signal to convert the weak laser signal into an easily recognizable voltage waveform; and the energy solution circuit includes a voltage follower circuit, an absolute value circuit, and an effective value circuit, wherein the voltage follower circuit is used to receive the electrical pulse signal and isolate the received electrical pulse signal from the output voltage signal; the absolute value circuit is used to obtain an absolute value voltage signal for the output voltage signal of the voltage follower circuit; and the effective value circuit is used to obtain the effective value of the absolute value voltage signal as the energy voltage signal Ue.

[0013] Based on further improvements of the above system, the signal conditioning box includes an analog-to-digital conversion module and a wireless data transmission module, wherein the analog-to-digital conversion module is used to convert the command voltage signals Uy and Uz and the energy voltage signal Ue into digital signals, and send the digital signals to the wireless data transmission module via a serial port; and the wireless data transmission module is used to encrypt the digital signals and transmit the encrypted digital signals via a mesh method.

[0014] Based on further improvement of the above system, the laser information field detection system also includes a wireless data receiving component, wherein the wireless data receiving component is used to receive encrypted digital signals and transmit them to the data processing terminal; the data processing terminal is used to obtain laser information field parameters according to the encrypted digital signals, and the laser information field parameters include two-axis deviations, laser information field zoom curve, irradiance and laser frequency encoding, wherein the deviation of the laser receiver in the y-axis direction relative to the optical axis and the deviation of the z-axis direction in the laser information field are calculated according to the command voltage signal; the laser information field zoom curve is generated according to the spot diameter, and the spot diameter is obtained by comparing the deviation of the y-axis and z-axis directions with the actual measured values ​​on the target surface of the detection target.

[0015] Based on the further improvement of the above system, the wireless data receiving component includes a wireless data receiving module and a power display module, wherein the wireless data receiving module is used to receive the encrypted digital signal from the wireless data transmission module through the data receiving antenna, and transmit the encrypted digital signal to the data processing terminal via a cable; the power display module is used to increase human-computer interactivity. When the power is sufficient, all three full-color LED lamp beads are lit; when the power drops to 50%, the blue lamp beads are extinguished, and the red and green lamp beads are lit; when the power drops to 25%, the blue and green lamp beads are extinguished, and only the red lamp beads are lit; when the power is too low, all three color lamp beads are extinguished.

[0016] On the other hand, an embodiment of the present invention provides a single-probe laser information field detection method, comprising: installing a laser receiving component and a signal conditioning box together, and setting them up at the center position in front of a detection target through a bracket; receiving an optical signal of the laser information field through the laser receiving component and converting the optical signal into a command voltage signal and an energy voltage signal; converting the command voltage signal and the energy voltage signal into digital signals through the signal conditioning box; and receiving the digital signal through a wireless data receiving component through a data processing terminal and acquiring laser information field parameters based on the digital signal.

[0017] Based on the further improvement of the above method, before receiving the optical signal through the laser receiving component, it further includes: determining the center position on the target surface of the detection target, and printing a crosshair as the aiming object of the laser emitting device on the emitting platform; determining point A, point B, point C, and point D at positions 1m above, to the right, below, and to the left of the center of the crosshairs, and printing crosshairs at the positions of point A, point B, point C, and point D; and determining point E and point F at the intersection position 1m away from the center of the crosshairs in the third quadrant and the first quadrant of the target surface, and printing crosshairs at the positions of point E and point F. word line, wherein the cross lines at the A point position, the B point position, the C point position, the D point position, the E point position and the F point position are smaller than the cross lines at the center position, wherein the detection target is set at a certain distance from the platform, so that the target surface of the detection target is perpendicular to the line connecting the launch platform and the detection target, and the visibility between the launch platform and the detection target is guaranteed; wherein the laser receiver in the laser receiving assembly is set at the center position of the cross lines, so that the laser receiver faces the launch platform position and the optical channel center line of the laser receiver is perpendicular to the target surface.

[0018] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0019] 1. The present invention adopts a single-probe laser information field detection method. The detection system can complete the detection of all parameter indicators such as the two-axis deviation between the center line and the aiming line of the laser information field, the zoom curve, the coding information, etc. through a laser receiver, and solves the problem of reduced installation accuracy caused by the installation position deviation of multiple laser receivers, thereby reducing the impact on the accuracy of the acquired laser information, simplifying the system structure, reducing costs, greatly reducing the difficulty of deployment, and improving reliability.

[0020] 2. The present invention only requires one installation and setting of the detection system, and the installation process is simple, time-saving, highly reliable, and can significantly reduce the cost of the detection system.

[0021] 3. The detection target provides a reference for information field detection, and the four points A, B, C, and D marked on the target surface can detect the two-axis deviation between the center line of the laser information field and the aiming line, and the zoom curve of the laser information field can be detected through the points E and F marked on the target surface. In addition, the target surface material is made of wood or a lightweight material with a certain strength to facilitate fixing and standing.

[0022] To facilitate long-distance observation, the target surface size is not less than 2m×2m, the target plate base color is white, and the frame is printed with a black frame line with a width of 20mm. A crosshair is printed in the center of the target surface, and the center of the crosshair is the location of the laser receiver. Four points A, B, C, and D are marked 1m above, below, left, and right of the crosshairs; points E and F are marked at the intersection of the crosshairs 1m away in the first and third quadrants; all the above points are marked with small crosshairs. The target surface is made of wood or a lightweight material with a certain strength, which has a certain strength and is easy to fix and stand.

[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0025] Figure 1 A structural diagram of a laser information field detection system according to an embodiment of the present invention;

[0026] Figure 2 A block diagram of the working principle of a laser information field detection system according to an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the operation of an information field detection system according to an embodiment of the present invention;

[0028] Figure 4 is a structural diagram of a laser receiver according to an embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of an energy calculation circuit according to an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of an analog-to-digital conversion module circuit according to an embodiment of the present invention;

[0031] Figure 7 A schematic diagram of a detection target according to an embodiment of the present invention;

[0032] Figure 8 The figure is a flow chart of a laser information field detection method using a single probe according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] refer to Figure 1 A specific embodiment of the present invention discloses a single-probe laser information field detection system, including: a laser receiving component, a signal conditioning box, a wireless data receiving component, a data processing terminal, a detection target and a bracket, wherein the laser receiving component is used to receive the optical signal of the laser information field and convert the optical signal into a command voltage signal and an energy voltage signal; the signal conditioning box is used to convert the command voltage signal and the energy voltage signal into a digital signal; and the data processing terminal is used to receive the digital signal via the wireless data receiving component and obtain the laser information field parameters based on the digital signal, wherein the laser receiving component and the signal conditioning box are installed together and are set up at the center position in front of the detection target through the bracket. In the embodiment, the laser information field parameters include two-axis deviation, laser information field zoom curve, irradiance and laser frequency encoding.

[0035] Compared with the prior art, in the single-probe laser information field detection system provided in this embodiment, the detection system can complete the detection of all parameter indicators such as the two-axis deviation between the center line and the aiming line of the laser information field, the zoom curve, the coding information, etc. through one laser receiver, and solves the problem of reduced installation accuracy caused by the installation position deviation of multiple laser receivers, thereby reducing the impact on the accuracy of the acquired laser information, simplifying the system structure, reducing costs, greatly reducing the difficulty of deployment, and improving reliability.

[0036] In the following, reference will be made to Figures 1 to 7 The laser information field detection system of a single probe according to an embodiment of the present invention is described in detail. Figure 1 The single-probe laser information field detection system includes: a laser receiving component, a signal conditioning box, a wireless data receiving component, a data processing terminal, data processing software, a detection target and a bracket.

[0037] refer to Figure 1 and Figure 2 The laser receiving component includes a laser receiver, a coordinate solving circuit and an energy solving circuit, wherein the laser receiver is used to receive the modulated light signal of the laser information field and convert the light signals of different frequencies into electrical pulse signals of corresponding frequencies; the coordinate solving circuit is used to convert the electrical pulse signal into the instruction voltage signals Uy and Uz; and the energy solving circuit is used to convert the electrical pulse signal into the energy voltage signal Ue through the transfer function.

[0038] refer to Figure 4The laser receiver includes an optical lens, an infrared filter, a photodiode and an amplifying and filtering circuit, wherein the optical lens is used to converge the modulated laser signal of the laser information field onto the surface of the infrared filter; the infrared filter is used to perform optical filtering on the converged laser signal and then send it to the photosensitive surface of the photodiode; and the photodiode is used to convert the filtered laser signal into an electrical pulse signal; the amplifying and filtering circuit is used to amplify and filter the electrical pulse signal to convert the weak laser signal into an easily recognizable voltage waveform.

[0039] The coordinate solving circuit is used to convert the electric pulse signal with position information into an electric signal, which is used in robots, automation equipment and other systems that require precise positioning. The main functions of the coordinate solving circuit are: receiving the input signal, which comes from the electric pulse signal of the corresponding frequency output by the laser receiver; the signal processing module, which converts the received electric pulse signal of the corresponding frequency into an electric signal, and performs necessary amplification, filtering and other processing to improve the signal quality; the coordinate conversion module, which converts the signal after amplification and filtering into a coordinate value, which represents the position of the projectile in two-dimensional or three-dimensional space.

[0040] refer to Figure 5 The energy solution circuit includes a voltage follower circuit, an absolute value circuit, and an effective value circuit, wherein the voltage follower circuit is used to receive an electrical pulse signal and isolate the received electrical pulse signal from the output voltage signal; the absolute value circuit is used to obtain an absolute value voltage signal for the output voltage signal of the voltage follower circuit; and the effective value circuit is used to obtain the effective value of the absolute value voltage signal as the energy voltage signal Ue.

[0041] refer to Figure 1 and Figure 2 The signal conditioning box includes an analog-to-digital conversion module and a wireless data transmission module. Figure 6 The analog-to-digital conversion module is used to convert the command voltage signals Uy and Uz and the energy voltage signal Ue into digital signals respectively, and send the digital signals to the wireless data transmission module in serial port mode; and the wireless data transmission module is used to encrypt the digital signals and transmit the encrypted digital signals in mesh mode.

[0042] refer to Figure 7The detection target is set at a certain distance from the platform, so that the target surface of the detection target is perpendicular to the line connecting the launch platform and the detection target, and the visibility between the launch platform and the detection target is guaranteed, which is used to provide a reference benchmark for laser information field detection. As the aiming object of the laser launch device on the launch platform, the target surface of the detection target includes the center position, point A, point B, point C, point D, point E and point F, among which, the center position is printed with a crosshair, wherein the laser receiver in the laser receiving assembly is located at the center position of the crosshair, so that the laser receiver faces the launch platform position and the optical channel center line of the laser receiver is perpendicular to the target surface; point A, point B, point C, point D, point E and point F are printed A crosshair is provided, which is respectively arranged at a predetermined distance above, to the right, below and to the left of the center of the crosshair; and crosshairs are printed at points E and F, which are respectively arranged at the intersection positions of the crosshairs at a predetermined distance from the center in the third quadrant and the first quadrant of the target surface, wherein the crosshairs at points A, B, C, D, E and F are smaller than the crosshairs at the center, so that the two-axis deviation between the center axis of the laser information field and the aiming line is detected through the points A, B, C and D, and the zoom curve of the laser information field is detected through the points E and F. In addition, the material of the target surface includes a wood material or a lightweight material with a certain strength.

[0043] refer to Figure 2 and Figure 3 The wireless data receiving component is used to receive the encrypted digital signal and transmit it to the data processing terminal; the data processing terminal is used to obtain the laser information field parameters according to the encrypted digital signal, the laser information field parameters include two-axis deviation, laser information field zoom curve, irradiance and laser frequency encoding, wherein the deviation of the laser receiver in the y-axis direction relative to the optical axis and the deviation of the z-axis direction in the laser information field are calculated according to the command voltage signal; the laser information field zoom curve is generated according to the spot diameter, and the spot diameter is obtained by comparing the deviation of the y-axis and z-axis directions with the actual measured value on the target surface of the detection target.

[0044] refer to Figure 2 The wireless data receiving component includes a wireless data receiving module and a power display module, wherein the wireless data receiving module is used to receive the encrypted digital signal from the wireless data transmission module through the data receiving antenna, and transmit the encrypted digital signal to the data processing terminal via the cable; the power display module is used to increase the human-computer interactivity. When the power is sufficient, all three full-color LED lamp beads are lit; when the power drops to 50%, the blue lamp beads are extinguished, and the red and green lamp beads are lit; when the power drops to 25%, the blue and green lamp beads are extinguished, and only the red lamp beads are lit; when the power is too low, all three color lamp beads are extinguished.

[0045] refer to Figure 8 Another specific embodiment of the present invention discloses a laser information field detection method, including: in step S801, the laser receiving component and the signal conditioning box are assembled and installed together, and are set up at the center position in front of the detection target through a bracket; in step S802, the optical signal is received by the laser receiving component and the optical signal is converted into a command voltage signal and an energy voltage signal; in step S803, the command voltage signal and the energy voltage signal are converted into a digital signal through the signal conditioning box; and in step S804, the digital signal is received by the data processing terminal via the wireless data receiving component and the laser information field parameters are obtained based on the digital signal. The laser information field parameters include two-axis deviation, laser information field zoom curve, irradiance and laser frequency coding

[0046] In addition, before receiving the optical signal through the laser receiving component, it further includes: determining the center position on the target surface of the detection target, and printing a crosshair as the aiming object of the laser emitting device on the emitting platform; determining point A, point B, point C, and point D at positions 1m above, to the right, below, and to the left of the center of the crosshairs, and printing crosshairs at the positions of point A, point B, point C, and point D; and determining point E and point F at the intersection position 1m away from the center of the crosshairs in the third quadrant and the first quadrant of the target surface, and printing crosshairs at the positions of point E and point F, wherein , the crosshairs at the positions of point A, point B, point C, point D, point E and point F are smaller than the crosshairs at the center position, wherein the detection target is set at a certain distance from the platform, so that the target surface of the detection target is perpendicular to the line connecting the launch platform and the detection target, and the visibility between the launch platform and the detection target is guaranteed; wherein the laser receiver in the laser receiving assembly is set at the center position of the crosshairs, so that the laser receiver faces the launch platform position and the center line of the optical channel of the laser receiver is perpendicular to the target surface.

[0047] In the following, reference Figures 1 to 7 , the laser information field detection method of a single probe according to an embodiment of the present invention is described in detail by way of a specific example.

[0048] 1. System composition

[0049] refer to Figure 1 The laser information field detection system is mainly composed of laser receiving components, signal conditioning box, wireless data receiving components, data processing terminal, data processing software, detection target, and bracket. The laser receiving component is mainly composed of laser receiver, coordinate solving circuit, and energy solving circuit. The signal conditioning box is composed of analog-to-digital conversion module, wireless data transmission module, and power supply module.

[0050] 2. Working Principle

[0051] refer to Figure 2 When the laser receiving component is in the laser information field, the laser receiver receives the optical signal, converts the optical signal into a voltage signal, and sends it to the coordinate solution circuit and the energy solution circuit. The coordinate solution circuit and the energy solution circuit condition the optical signal of the laser receiver into the instruction voltage signals Uy, Uz and the energy voltage signal Ue for easy processing, and send them to the analog-to-digital conversion module. The analog-to-digital conversion module converts the three voltage signals Uy, Uz, and Ue into digital signals, and then sends the digital signals to the wireless data transmission module in serial port mode. After receiving the digital signal, the wireless data transmission module encrypts the signal, transmits the data in mesh mode, and converts it into the network port protocol through the wireless data receiving module, and sends it to the data processing terminal through the network port. Finally, the data processing terminal realizes data collection, processing, analysis and result display.

[0052] refer to Figure 3 , the detection target is placed at a certain distance from the platform, the laser receiving component and the signal conditioning box are installed together, and are set up at the center of the crosshairs in front of the detection target through a bracket, and face the platform direction. The laser emitting device first aims at the center of the crosshairs of the detection target to emit laser, and then moves the laser information field along the prescribed route. After the laser receiver receives the laser information field signal and is processed by the signal conditioning box, the detected information is encrypted and transmitted via the wireless data link through the data transmission antenna. The wireless data receiving component is connected to the data processing terminal through a cable and placed on the side of the laser emitting device. The wireless data receiving component receives the information sent by the signal conditioning box through the data receiving antenna and sends it to the data processing terminal.

[0053] Since the energy voltage signal Ue can reflect the laser energy in the laser information field, and the deviation of the laser receiver relative to the central axis in the laser information field can be calculated through the command voltages Uy and Uz. Therefore, within a measurement cycle of the laser information field, by analyzing the change rules of Ue, Uy, and Uz, it is possible to calculate and determine whether the two-axis deviation between the center line of the laser information field and the aiming line, the zoom curve, the coding information and other parameter indicators meet the requirements. During the detection process, the laser frequency code is emitted at a certain frequency and period, and the laser receiver solves the coding information in real time and sends it to the data processing terminal.

[0054] 3. Workflow

[0055] 1. According to the requirements of laser information field detection, the front personnel will place the detection target at a certain distance from the platform, so that the target surface of the detection target is perpendicular to the line connecting the platform and the detection target, and ensure the visibility between the platform and the detection target.

[0056] 2. Install the laser receiving assembly and the signal conditioning box together, and set them up at the center of the crosshairs in front of the detection target through a bracket, so that the laser receiver faces the platform direction and ensures that the center line of its optical channel is perpendicular to the target surface.

[0057] 3. The rear personnel connect the wireless data receiving component to the data processing terminal and place it on one side of the platform where the laser emitting device is located.

[0058] 4. The front personnel and the rear personnel turn on the equipment switch respectively, and the switch indicator light comes on. After the indicator lights of the data transmitting antenna and the data receiving antenna turn green, the wireless transmission is normal and the preparation of the detection system is completed.

[0059] 5. The rear personnel open the data processing software on the data processing terminal and confirm that it is running normally, and start data collection.

[0060] 6. Aim the laser emitting device at the center of the crosshairs of the detection target and emit the laser for 5 to 10 seconds. Then aim at points A, B, C, and D on the detection target in turn and stay at each point for 5 to 10 seconds. This completes the two-axis deviation detection between the center line of the laser information field and the aiming line.

[0061] 7. Aim the laser emitted by the laser emitting device at point E on the detection target. When ready, press the "zoom" button. The laser information field will continuously zoom according to the established procedure. Maintain stable aiming for more than 20 seconds, then press the "reset" button to reset the laser emitting device.

[0062] 8. Then aim the laser emitted by the laser emitting device at point F on the detection target. When ready, press the "zoom" button again and keep aiming steadily for more than 20 seconds. Then press the "reset" button to reset the laser emitting device. The laser information field zoom curve and coding information parameter index detection are now completed.

[0063] 9. After the laser emission is completed, the data processing software stops collecting data, analyzes the data detection collection results, and determines whether the working status of the laser information field meets the requirements.

[0064] 4. Design of main components

[0065] 1. Laser receiving component. The main function of the laser receiving component is to convert the modulated light signal of the laser information field at a certain position into a voltage signal, and then send it to the data processing terminal through wireless data transmission. The laser receiving component consists of a laser receiver, a coordinate solving circuit, and an energy solving circuit.

[0066] refer to Figure 4The function of the laser receiver is to receive the modulated light signal of the laser information field, and convert the light signals of different frequencies into electrical pulses of corresponding frequencies, and then transmit the pulse electrical signals to the coordinate solving circuit, which will demodulate the Uy and Uz DC voltages reflecting the position of the laser receiver in the laser information field in real time and continuously.

[0067] The working principle of the laser receiver is as follows: the laser information is focused onto the surface of the infrared filter through an optical lens, and then sent to the photosensitive surface of the photodiode after optical filtering by the infrared filter. The photodiode converts the laser information into level pulse information. The connection board completes the connection between the photodiode and the amplification and filtering circuit. The level pulse output by the photodiode is sent to the preamplifier circuit of the amplification and filtering circuit for primary amplification, and then sent to the high-pass filter circuit to filter out the low-frequency components. After secondary amplification, it is sent to the low-pass circuit for tertiary amplification and filtering out the high-frequency components, thereby achieving the purpose of converting weak laser information into an easily recognizable voltage waveform and realizing the circuit frequency domain filtering.

[0068] The function of the coordinate solving circuit is to process the electrical pulse signal output by the laser receiver into two signals Uy and Uz that follow the change of the line deviation amplitude, representing the position of the laser receiver relative to the optical axis in the laser information field.

[0069] refer to Figure 5 The function of the energy calculation circuit is to convert the signal of the laser receiver into the energy signal of the laser information field through a certain transfer function. The circuit schematic diagram is shown in Figure 5 The energy calculation circuit is mainly composed of a voltage follower circuit and an effective value circuit. The voltage follower circuit is used to isolate the signal and improve the input impedance; the effective value circuit is used to read the effective value of the energy voltage signal.

[0070] 2. Signal conditioning box. The signal conditioning box consists of an analog-to-digital conversion module, a wireless data transmission module and a power supply module.

[0071] refer to Figure 6 The function of the analog-to-digital conversion module is to convert the signals generated by the coordinate solution circuit and the energy solution circuit into TTL serial port signals through analog-to-digital conversion, and send them to the wireless transmission module.

[0072] The wireless data transmission module adopts a plug-and-play MESH transmission board, point-to-point transmission mode, and an internationally certified encryption method. Its main function is to send TTL serial port signals to the data processing terminal wirelessly.

[0073] The power module is divided into a battery and a DC-DC power regulator module. The battery uses a domestically produced low-temperature 18650 lithium battery, with a single battery capacity of 2.5Ah, and a 4-series-2-parallel solution is used to achieve a capacity of 5Ah. The DC-DC power regulator module uses domestically produced TH20W24S-13V and TH20W24D-12V6 to power the equipment, isolate the power input and output, and improve the insulation resistance and dielectric strength of the internal signal and the shell, thereby improving the safety of the equipment.

[0074] 3. Wireless data receiving component. The wireless data receiving component is mainly composed of a wireless data receiving module, a power module, and a power display module. Its main function is to receive the data detected by the laser receiving component and then send it to the data processing terminal.

[0075] The wireless data receiving component and the wireless data transmission module in the signal conditioning box are combined into a communication system. The hardware circuits of the two are consistent, both have the function of sending and receiving, and are used together to complete data transmission and communication.

[0076] The power module is consistent with the power module in the signal conditioning box.

[0077] The power display module is used to increase human-computer interaction. The operator can grasp the equipment's battery life according to the power indication and plan the test content reasonably. The power display module solution uses F124 to control a full-color common cathode LED. When the power is sufficient, all three-color beads of the full-color LED light are lit; when the power drops to 50%, the blue bead goes out, and the red and green beads are lit; when the power drops to 25%, the blue and green beads go out, and only the red bead is lit; when the power is too low to support the system, the three-color beads are all extinguished.

[0078] 4. Data processing terminal: The data processing terminal adopts domestic high-performance notebook.

[0079] 5. Data processing software. Data processing software is the main means of human-computer interaction and is used to process test data and analyze results. The main functions are: (1) Merge the laser information field detection information collected by the laser receiving component with the relevant setting information and save it as a test data file; (2) Analyze and evaluate whether the two-axis deviation between the center line of the laser information field and the aiming line is qualified; (3) According to the laser information field parameter indicators, after analyzing and processing the voltage data, determine whether the laser information field zoom curve and coding information parameter indicators are qualified; (4) It has data management functions and can display, query, delete and other operations on the detection data records.

[0080] 6. Detection target. Reference Figure 7The detection target is used to provide a reference for information field detection and serves as an observation target for the laser emitting device. To facilitate long-distance observation, the target surface size is not less than 2m×2m, the target plate base color is white, and the frame is printed with a black frame line with a width of 20mm. A crosshair is printed in the center of the target surface, and the center of the crosshair is the location of the laser receiver. Four points A, B, C, and D are marked 1m above, below, left, and right of the center of the crosshairs; points E and F are marked at the intersection of the first and third quadrants 1m away from the crosshairs; all the above points are marked with small crosshairs. The target surface is made of wood or a lightweight material with a certain strength, which has a certain strength and is easy to fix and stand.

[0081] 7. Bracket. The bracket is used to reliably fix the combination of the laser receiving component and the signal conditioning box. It adopts a tripod support method. The installation height can be adjusted within the range of 1.5m to 3m. It can be retracted and folded for easy carrying. It is reliably and firmly connected to the laser receiver through a threaded connection.

[0082] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0083] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A single-probe laser information field detection system, characterized in that: include: Laser receiving component, signal conditioning box, wireless data receiving component, data processing terminal, detection target and bracket, among which, The laser receiving component is used to receive the optical signal of the laser information field and convert the optical signal into a command voltage signal and an energy voltage signal; The signal conditioning box is used to convert the command voltage signal and the energy voltage signal into digital signals; and The data processing terminal is used to receive the digital signal via the wireless data receiving component and obtain the laser information field parameters based on the digital signal, wherein the laser receiving component is installed together with the signal conditioning box and is erected at the center position in front of the detection target through the bracket.

2. The single-probe laser information field detection system according to claim 1, characterized in that: The detection target is set at a certain distance from the platform, so that the target surface of the detection target is perpendicular to the line connecting the launch platform and the detection target, and the visibility between the launch platform and the detection target is guaranteed, and is used to provide a reference benchmark for laser information field detection, as a sighting object of the laser launch device on the launch platform. The target surface of the detection target includes a center position, point A, point B, point C, point D, point E and point F, wherein, The center position is printed with a crosshair, wherein the laser receiver in the laser receiving assembly is located at the center position of the crosshair, so that the laser receiver faces the launch platform position and the optical channel center line of the laser receiver is perpendicular to the target surface; The points A, B, C and D are printed with crosshairs and are respectively arranged at positions at predetermined distances above, to the right, below and to the left of the center of the crosshairs; and The points E and F are printed with crosshairs and are respectively arranged at intersection positions at a predetermined distance from the center of the crosshairs in the third quadrant and the first quadrant of the target surface, wherein the crosshairs at the positions of points A, B, C, D, E and F are smaller than the crosshairs at the center position.

3. The single-probe laser information field detection system according to claim 2, characterized in that: The material of the target surface includes wood material or a light material with a certain strength.

4. The single-probe laser information field detection system according to claim 2, characterized in that: The laser receiving assembly includes a laser receiver, a coordinate solving circuit and an energy solving circuit, wherein: The laser receiver is used to receive the modulated optical signal of the laser information field and convert the optical signal of different frequencies into an electrical pulse signal of corresponding frequency; and The coordinate solving circuit is used to convert the electric pulse signal into command voltage signals Uy and Uz; and The energy calculation circuit is used to convert the electrical pulse signal into an energy voltage signal Ue through a transfer function.

5. The single-probe laser information field detection system according to claim 4, characterized in that: The laser receiver comprises an optical lens, an infrared filter, a photodiode and an amplifying and filtering circuit, wherein the optical lens is used to converge the modulated laser signal of the laser information field onto the surface of the infrared filter; the infrared filter is used to perform optical filtering on the converged laser signal before sending it to the photosensitive surface of the photodiode; and the photodiode is used to convert the filtered laser signal into an electrical pulse signal; the amplifying and filtering circuit is used to perform amplifying and filtering on the electrical pulse signal to convert the weak laser signal into an easily identifiable voltage waveform; and The energy solution circuit includes a voltage follower circuit, an absolute value circuit, and an effective value circuit, wherein the voltage follower circuit is used to receive the electrical pulse signal and isolate the received electrical pulse signal from the output voltage signal; the absolute value circuit is used to obtain the absolute value voltage signal of the output voltage signal of the voltage follower circuit; and the effective value circuit is used to obtain the effective value of the absolute value voltage signal as the energy voltage signal Ue.

6. The single-probe laser information field detection system according to claim 4, characterized in that: The signal conditioning box includes an analog-to-digital conversion module and a wireless data transmission module, wherein: The analog-to-digital conversion module is used to convert the command voltage signals Uy and Uz and the energy voltage signal Ue into digital signals, and send the digital signals to the wireless data transmission module in a serial port manner; and The wireless data transmission module is used to encrypt the digital signal and transmit the encrypted digital signal via a mesh method.

7. The single-probe laser information field detection system according to claim 6, characterized in that: It also includes a wireless data receiving component, wherein: The wireless data receiving component is used to receive the encrypted digital signal and transmit it to the data processing terminal; The data processing terminal is used to obtain laser information field parameters according to the encrypted digital signal, and the laser information field parameters include two-axis deviation, laser information field zoom curve, irradiance and laser frequency encoding, wherein the deviation of the y-axis position and the z-axis position of the laser receiver relative to the optical axis in the laser information field are calculated according to the command voltage signal; the laser information field zoom curve is generated according to the spot diameter, and the spot diameter is obtained by comparing the deviation of the y-axis and z-axis positions with the actual measured values ​​on the target surface of the detection target.

8. The single-probe laser information field detection system according to claim 6, characterized in that: The wireless data receiving component includes a wireless data receiving module and a power display module, wherein: The wireless data receiving module is used to receive the encrypted digital signal from the wireless data transmission module through the data receiving antenna, and transmit the encrypted digital signal to the data processing terminal via the cable; The power display module is used to increase human-computer interactivity. When the power is sufficient, all three full-color LED lamp beads are lit; when the power drops to 50%, the blue lamp beads are extinguished, and the red and green lamp beads are lit; when the power drops to 25%, the blue and green lamp beads are extinguished, and only the red lamp beads are lit; when the power is too low, all three color lamp beads are extinguished.

9. A single-probe laser information field detection method, characterized in that: include: The laser receiving component and the signal conditioning box are assembled and installed together, and are set up at the center position in front of the detection target through a bracket; Receiving an optical signal through the laser receiving component and converting the optical signal into a command voltage signal and an energy voltage signal; Converting the command voltage signal and the energy voltage signal into digital signals through the signal conditioning box; as well as The digital signal is received by a data processing terminal via a wireless data receiving component and laser information field parameters are acquired based on the digital signal.

10. The laser information field detection method with a single probe according to claim 9, characterized in that: Before receiving the optical signal through the laser receiving component, the method further comprises: Determine the center position on the target surface of the detection target, and print a crosshair as a sighting object of the laser emitting device on the emitting platform; Determine points A, B, C, and D at positions 1 m above, to the right, below, and to the left of the center of the crosshairs and print crosshairs at the positions of points A, B, C, and D; and In the third quadrant and the first quadrant of the target surface, point E and point F at the intersection position 1 m away from the center of the crosshairs are determined and crosshairs are printed at the position of point E and the position of point F, wherein the crosshairs at the position of point A, the position of point B, the position of point C, the position of point D, the position of point E and the position of point F are smaller than the crosshairs at the center position, The detection target is set at a certain distance from the platform, so that the target surface of the detection target is perpendicular to the line connecting the launch platform and the detection target, and the visibility between the launch platform and the detection target is ensured; Wherein, the laser receiver in the laser receiving assembly is arranged at the center position of the crosshairs, so that the laser receiver faces the launch platform position and the optical channel center line of the laser receiver is perpendicular to the target surface.

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