A portable laser signal detection device
By integrating laser detection and signal processing functions into a portable laser signal detection device, the problem of complex and inefficient laser signal detection in existing technologies is solved, realizing efficient laser signal detection and rapid field testing, which is suitable for laser communication and guidance fields.
Patent Information
- Application Number
- CN202423093122.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-14
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2034-12-14
AI Technical Summary
Existing laser signal detection methods involve numerous and complex equipment and processes, resulting in low efficiency in field testing and failing to meet the needs of rapid and efficient equipment development.
Design a portable laser signal detection device that integrates a laser detection component, a signal processing component, a power supply component, and a housing component. It has automatic gain adjustment and decoding functions, can quickly identify the pattern of laser signals, and display the detection results through an LED display and an external computer.
It improves the efficiency of field testing for laser communication equipment and guidance heads, enables efficient detection of laser signals, adapts to both direct and reflected signals, supports field operations without power, and simplifies the testing process.
Smart Images
Figure CN224681771U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the fields of laser semi-active guidance and laser communication technology, and specifically relates to a portable laser signal detection device. Background Technology
[0002] Due to its good monochromaticity and directionality, small beam divergence angle, concentrated energy, high tracking accuracy and spatial resolution, lasers are widely used in guidance and communication.
[0003] With the advent of the information age, new services and technologies such as the Internet of Things, cloud computing, mobile data transmission, and high-definition internet television are constantly emerging, making it difficult for traditional microwave communication to meet the ever-increasing capacity demands of communication systems. In this context, laser communication, with its extremely high bandwidth transmission capability, has become a mainstay of information and communication technologies in the new era. Laser communication uses light as a carrier and can be divided into wired fiber optic communication and wireless space optical communication. In space optical communication, the modulated light signal at the transmitting end travels through free space to the receiving end. Compared to traditional microwave communication, space optical communication has advantages such as large capacity, high security, light weight, low power consumption, strong anti-interference capability, and abundant frequency resources. Compared to fiber optic communication, space optical communication can achieve optical transmission under special link conditions such as inter-satellite, satellite-to-ground, and space-to-ground connections, and can save on expensive fiber optic laying and maintenance costs. These advantages make space optical communication technology an important research direction for the next generation of information and communication technologies.
[0004] Meanwhile, lasers are also widely used in guided munitions. Current research and development in laser guidance focuses on active laser imaging guidance, which produces a relatively stable three-dimensional image and is convenient for image editing and computation. Therefore, laser imaging guidance has a very promising future. There are three types of laser guidance: active homing, passive homing, and beam riding. Currently, the guidance technology most commonly used in various countries is semi-active laser guidance. my country began its research and exploration of laser-guided weapons in the late 1970s. Through decades of effort, the technology has matured, and various types of semi-active laser-guided weapons have been produced. Laser-guided weapons occupy a very important position in my country's weapon system and are one of the main directions of research and development in my country's guided weaponry.
[0005] The development of space laser communication equipment and laser guidance seekers requires a series of experimental verifications, among which field tests are indispensable. Due to the invisibility of lasers, a series of devices are often needed to detect the laser signal before testing to ensure that the testing conditions of the equipment are met. Accurate measurement of laser signals is of great significance for the experimental work of space laser communication equipment and laser guidance seekers.
[0006] Current laser signal testing methods mostly rely on piecing together test environments using the product itself or other detection equipment, which is cumbersome and inefficient. These testing methods can no longer meet the increasingly rapid and efficient demands of modern equipment development.
[0007] Therefore, there is an urgent need for a more efficient and reliable detection device to detect laser signals. Utility Model Content
[0008] (a) Technical problems to be solved
[0009] The technical problem to be solved by this utility model is: how to design a detection device to detect laser signals, so as to improve the field test efficiency of space laser communication equipment or laser guidance head, and improve the development efficiency of space laser communication equipment or laser guidance head equipment.
[0010] (II) Technical Solution
[0011] To solve the above-mentioned technical problems, this utility model provides a portable laser signal detection device, including a laser detection component, a laser signal processing component, a power supply component, a housing component, and an interface panel;
[0012] The laser detection component includes an optical lens, an APD detector, and a photoelectric conversion module. The front-end optical lens filters and converges the laser signal emitted or reflected by the target. The converged laser signal is projected onto the APD detector to sense the laser signal. The photoelectric conversion module performs photoelectric conversion on the sensed laser signal, converting the laser signal into a laser electrical signal and sending it to the laser signal processing component.
[0013] The laser signal processing component includes an automatic gain module and a decoding module. The automatic gain module adjusts the gain of the received laser electrical signal, and the decoding module detects the laser pulse period and pulse width of the laser signal and identifies the code pattern of the laser signal. The identified information is displayed on the LED display component of the interface panel.
[0014] The power supply component provides power to the laser detection component, the laser signal processing component, and the interface panel;
[0015] The laser detection component, laser signal processing component, and power supply component are located inside the housing component.
[0016] Preferably, the automatic gain module adjusts the gain coefficient of the APD detector according to the intensity of the laser energy.
[0017] Preferably, the automatic gain module automatically adjusts the gain to adapt the device to both direct laser signal detection and reflected laser signal detection.
[0018] Preferably, the decoding module internally stores specified laser pulse signal feature data. The decoding module matches the feature information of the received laser signal with the stored laser signal feature data to detect the specified laser signal.
[0019] Preferably, the power supply component is internally configured with a rechargeable battery, a voltage conversion circuit, and a current limiting protection circuit. The rechargeable battery and voltage conversion circuit supply power to the laser detection component, the laser signal processing component, and the interface panel, while the current limiting protection circuit provides current limiting protection for the power supply.
[0020] Preferably, the housing component is made of aluminum alloy.
[0021] Preferably, the interface panel includes a charging port, a power status light, and an LED display component; the charging port is the charging interface for the power supply component; and the power status light displays the current status of the power supply component.
[0022] Preferably, the LED display component displays the characteristics, code pattern, and detection status of the detected laser signal.
[0023] This invention also provides a laser semi-active guidance device using the aforementioned apparatus.
[0024] This invention also provides a laser communication device using the aforementioned apparatus.
[0025] (III) Beneficial Effects
[0026] 1. This utility model is a portable laser signal detection device that integrates a laser detection component, a laser signal processing component, and a power supply component. It can detect reflected laser signals and has a built-in rechargeable battery, making it suitable for use in outdoor work scenarios without power.
[0027] 2. This utility model can quickly identify the code pattern of a specified laser signal, and the code pattern can be imported according to requirements.
[0028] 3. This utility model has an automatic gain adjustment function, which can adaptively detect both direct and reflected laser signals.
[0029] 4. The laser information detected by this utility model can be displayed on an LED panel or displayed and recorded on an external computer. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the appearance of the portable laser signal detection device of this utility model;
[0031] Figure 2 This is a schematic diagram of the portable laser signal detection device of this utility model;
[0032] Figure 3 This is a schematic diagram of the working scenario of the portable laser signal detection device of this utility model;
[0033] Figure 4 This is a schematic diagram illustrating the working principle of the portable laser signal detection device of this utility model.
[0034] The components include: 1. Laser signal processing component; 2. Laser detection component; 3. Power supply component; 4. Housing component; 5. Interface panel; 5-1. Power status light; 5-2. RS422 serial port; 5-3. LED display component; and 5-4. Charging port. Detailed Implementation
[0035] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.
[0036] This invention addresses the shortcomings of existing laser signal detection methods, such as complexity, numerous devices, and low efficiency, by proposing a portable laser signal detection device. This portable laser signal detection device is primarily used for real-time detection of laser signals directly irradiated by a laser emitter or reflected laser signals irradiated onto a target surface, and provides measurement results. The device features an integrated design, facilitating various laser signal detection experiments in the field. Through recording and analyzing the measurement results, it helps improve the use and performance evaluation of laser communication systems and laser semi-active guidance weapon systems, and is widely applicable to related testing systems in the fields of laser communication systems and laser semi-active guidance.
[0037] like Figures 1-4 As shown, the portable laser signal detection device provided by this utility model consists of a laser detection component, a laser signal processing component, a power supply component, a housing component, and an interface panel, and is used to collect and detect the laser signals emitted or reflected by the target after the target is aimed and aligned.
[0038] The laser detection component filters and converges the laser signal through the front-end optical lens, projects the converged laser signal onto the built-in APD detector to sense the laser signal, with an optical field of view of ±12° and an effective distance of ≥5Km (ground visibility not less than 15km). The sensed laser signal is then converted into a photoelectric signal and sent to the laser signal processing component.
[0039] The laser signal processing component receives the laser electrical signal after photoelectric conversion by the laser detection component, adjusts the gain of the laser electrical signal through the automatic gain module, and then detects the laser pulse period and pulse width of the laser signal through the decoding module using existing laser encoding and decoding algorithms. The code pattern of the laser signal is identified through existing decoding algorithms, and the identified information is displayed on the LED display component of the interface panel.
[0040] The automatic gain module is a detector output gain automatic adjustment module that can automatically adjust the APD detector gain coefficient according to the intensity of the laser energy, ensuring that the acquired data is within a fixed range, which facilitates subsequent signal processing. Simultaneously, through automatic gain adjustment, the device can automatically adapt to the detection of both direct laser signals (high-intensity signals) and reflected laser signals (low-intensity signals).
[0041] The decoding algorithm described is an existing matching and recognition algorithm for laser pulse signals. The laser signal processing component internally stores specified laser pulse signal feature data. By quickly matching the feature information of the received laser signal with the stored laser signal feature data, the specified laser signal is detected. The internally stored specified laser pulse signal feature data can be imported as needed.
[0042] The power supply component is equipped with a rechargeable battery, a voltage conversion circuit, and a current limiting protection circuit. The voltage conversion circuit supplies power to the laser detection component, the laser signal processing component, and the interface panel, while the current limiting protection circuit limits the power supply to prevent damage to the components.
[0043] The housing component serves as the mounting frame and outer shell for the portable laser signal detection device. It is constructed entirely of aluminum alloy to ensure strength while reducing weight. The housing component also incorporates heat dissipation measures for internal components, preventing overheating of the laser detection assembly, laser signal processing assembly, power supply assembly, and other components.
[0044] The interface panel includes an RS422 serial port, a charging port, and other interfaces, as well as a power status indicator and an LED display. The charging port is the charging interface for the power supply component; the power status indicator is used to display the current status of the power supply component, mainly the remaining power.
[0045] The LED display component is used to display the characteristics (period, pulse width, etc.), code pattern, and detection status of the detected laser signal.
[0046] Working principle:
[0047] After the portable laser signal detection device completes target aiming and alignment, it is powered by an internal battery or external power source to initiate laser target detection. When the laser emitter emits a laser, the laser signal detection device identifies the laser signal emitted by the laser emitter or the laser signal reflected from the target surface. The laser detection component performs photoelectric conversion processing on the received laser signal, converting it into an electrical signal and sending it to the laser signal processing component. The laser signal processing component performs laser pulse code signal identification on the received laser electrical signal, and uploads the decoded laser signal encoding information to an external host computer via an RS422 serial port, while simultaneously displaying it on an LED display component. The external computer receives the RS422 serial port information through the host computer and displays and records the laser signal data.
[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A portable laser signal detection device, characterized in that, Includes laser detection components, laser signal processing components, power supply components, housing components, and interface panels; The laser detection component includes an optical lens, an APD detector, and a photoelectric conversion module. The front-end optical lens filters and converges the laser signal emitted or reflected by the target. The converged laser signal is projected onto the APD detector to sense the laser signal. The photoelectric conversion module performs photoelectric conversion on the sensed laser signal, converting the laser signal into a laser electrical signal and sending it to the laser signal processing component. The laser signal processing component includes an automatic gain module and a decoding module. The automatic gain module adjusts the gain of the received laser electrical signal, and the decoding module detects the laser pulse period and pulse width of the laser signal and identifies the code pattern of the laser signal. The identified information is displayed on the LED display component of the interface panel. The power supply component provides power to the laser detection component, the laser signal processing component, and the interface panel; The laser detection component, laser signal processing component, and power supply component are located inside the housing component.
2. The apparatus as claimed in claim 1, characterized in that, The automatic gain module adjusts the gain coefficient of the APD detector according to the intensity of the laser energy.
3. The apparatus as described in claim 1, characterized in that, The automatic gain module automatically adjusts the gain to adapt the device to both direct and reflected laser signal detection.
4. The apparatus as claimed in claim 1, characterized in that, The decoding module stores specified laser pulse signal feature data. The decoding module matches the feature information of the received laser signal with the stored laser signal feature data to detect the specified laser signal.
5. The apparatus as claimed in claim 1, characterized in that, The power supply component is internally equipped with a rechargeable battery, a voltage conversion circuit, and a current limiting protection circuit. The rechargeable battery and voltage conversion circuit supply power to the laser detection component, the laser signal processing component, and the interface panel, while the current limiting protection circuit provides current limiting protection for the power supply.
6. The apparatus as claimed in claim 1, characterized in that, The housing component is made of aluminum alloy.
7. The apparatus as claimed in claim 1, characterized in that, The interface panel includes a charging port, a power status light, and an LED display component. The charging port is the charging interface for the power supply component; the power status light displays the current status of the power supply component.
8. The apparatus as claimed in claim 7, characterized in that, The LED display component displays the characteristics, code pattern, and detection status of the detected laser signal.