A coded laser / repetition frequency pulse laser signal synthesis generator

Abstract

The utility model belongs to the field of laser detection technology discloses a kind of code laser / frequency pulse laser synthetic signal generator, including shell, DC power supply, voltage stabilizing circuit, control circuit;DC power supply, voltage stabilizing circuit, control circuit are arranged in the inside of shell;The shell front portion is provided with control panel, and the control panel is provided with pulse and frequency laser simulation button, code laser simulation button, liquid crystal screen, self-check test point, power switch, signal output switch, output channel, debugging interface.The utility model's technical scheme adopts integrated design mode, shell uses aluminium material, appearance uses the form of liquid crystal screen+push-button switch, so that it has the characteristics of small and portable.

Description

Technical Field

[0001] This utility model belongs to the field of laser detection technology, specifically relating to a novel coded laser and high-repetition-rate pulse laser synthesized signal generator. Background Technology

[0002] In the production, debugging, inspection, and acceptance processes of optoelectronic countermeasures equipment, there are requirements for laser detection indicators such as repetition rate, pulse, and encoding. To test its detection and recognition capabilities, equipment such as repetition rate pulsed laser generators and encoded laser generators are needed. Previously used methods included: 1) using an arbitrary waveform generator (encoded signal generator) to generate 2-bit, 5-bit, and 8-bit encoded laser signals to test the product's ability to recognize encoded lasers; 2) using a combination of a laser beam rider and a handheld laser rangefinder to test the repetition rate pulsed laser recognition capability. The testing process required constant switching between instruments and changing connection methods, resulting in very low work efficiency. Utility Model Content

[0003] (a) Technical problems to be solved The technical problem this invention aims to solve is the low work efficiency caused by the need to constantly switch instruments and change connection methods during the current testing process.

[0004] (II) Technical Solution To solve the above-mentioned technical problems, this utility model provides a novel coded laser and high-repetition-rate pulsed laser synthesis signal generator, including a housing, a DC power supply, a voltage regulator circuit, and a control circuit; the DC power supply, voltage regulator circuit, and control circuit are disposed inside the housing; a control panel is provided at the front of the housing, and the control panel is provided with a pulsed and high-repetition-rate laser simulation button 1, a coded laser simulation button 2, an LCD screen 3, a self-test pilot 4, a power switch 5, a signal output switch 6, an output channel 7, and a debugging interface 8; the DC power supply is connected to the mains power, the voltage regulator circuit is connected to the DC power supply, and the control circuit is connected to the voltage regulator circuit; the pulsed and high-repetition-rate laser simulation button 1, the coded laser simulation button 2, the LCD screen 3, the self-test pilot 4, the power switch 5, the signal output switch 6, the output channel 7, and the debugging interface 8 are connected to the control circuit.

[0005] Furthermore, a support frame 9 is provided on the shell.

[0006] Furthermore, the DC power supply output terminal has overvoltage, overload, and short-circuit protection functions.

[0007] Furthermore, the voltage regulator circuit has secondary filtering and voltage reduction capabilities, providing the control circuit with DC±5V voltage and output DC+9V and DC+12V voltages.

[0008] Furthermore, the control circuit is used to simulate the analog signal requirements.

[0009] Furthermore, the housing is made of aluminum.

[0010] (III) Beneficial Effects Compared with existing technologies, this utility model has the following advantages: It adopts an integrated design, with an aluminum housing and an appearance combining an LCD screen and push-button switches, making it compact and portable. The LCD screen displays information such as the triggered signal button, its frequency, and code pattern; the power switch is a waterproof switch with an indicator light; and an output channel is provided. An input voltage connector for the control circuit is also included, facilitating later calibration, testing, and maintenance. The device's 15 laser detection indicator signal parameters correspond to each compilation unit, allowing for convenient on-demand access. Attached Figure Description

[0011] Figure 1 This is a structural diagram of a novel coded laser and high-repetition-rate pulse laser synthesis signal generator. Figure 2 This is a schematic diagram of the working principle; Figure 3 A diagram illustrating the function of each button. Detailed Implementation

[0012] 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.

[0013] This invention addresses the detection requirements of optoelectronic countermeasures equipment for coded laser and high-repetition-rate (PRR) pulsed laser signals. Centered on a control circuit unit, software controls and compiles a simulation program to change the duty cycle of the operating level, thereby outputting pulse signals. Based on the periodic delay of the compiled code patterns, the output requirements of the synthesized signal generator are met, driving and controlling the load source (laser pulse tube) to achieve signal output. It can provide 15 laser detection indicator signals, including coded lasers (8 code patterns from 2 to 9 bits), high-repetition-rate lasers (5 frequencies: 5Hz, 10Hz, 20Hz, 25Hz, 50Hz), pulsed lasers, and beam-riding guided lasers, with the output mode selectable according to requirements.

[0014] Its main components include: a DC power supply, an interface circuit board, a control circuit board, an LCD screen, and a laser pulse tube. Its working principle is as follows: 1) The equipment is powered by single-phase AC220V~240V mains power; after the equipment is powered on, the isolated DC power supply module completes the AC / DC voltage conversion and filters it to make its output ripple less than 50mV; finally, it outputs DC 12V to the non-isolated secondary power supply board; 2) The non-isolated secondary power supply circuit outputs ±5V after being stepped down and regulated by two TPS5430 integrated circuits, and transmits it to the control interface circuit board; 3) The control and interface circuit board first steps down the input voltage to output 3.3V to power the microprocessor (ATmega328P) and the LCD screen for normal operation; the control and interface circuit board executes the required parameters for calling 15 laser signal simulations and preprocesses the compiled configuration parameters. 4) Check the production and debugging requirements of the optoelectronic countermeasures equipment under test, and confirm the requirements for the test indicators (such as the coding laser detection code pattern and the repetition rate laser detection frequency). 5) Select the appropriate button switch according to the test requirements and set its physical state to "on"; 6) The control and interface circuit board scans the 15 analog signal requirement switches. For switches confirmed to be in the "on" state, the corresponding compiler is loaded; for switches in the "off" state, a wait instruction is executed. 7) The control and interface circuit board executes the corresponding loaded compiler program, and according to the program rules, outputs analog level signals from the I / O and drives the laser pulse tube to act as a radiation source; 8) While controlling the output level signal of the interface circuit board, information is exchanged with the LCD screen through I2C communication by controlling the occupation of the I / O ports of the control circuit board and their level logic, and the relevant parameter information of the program loading is displayed on the screen so that the operator can operate visually. 9) Check the communication protocol of the product under test, and display and confirm the corresponding decoded feedback information through CAN bus or serial port 422, and display it on the host computer.

[0015] like Figure 1 The image shows the external structural design of a novel coded laser and high-repetition-rate pulse laser synthesis signal generator. Figure 2 Its working principle is as follows: 1) The 220V AC mains power is converted to 24V DC output through a DC power supply, and the output terminal has overload protection function.

[0016] 2) The voltage regulator circuit achieves voltage regulation and filtering effects, with a step-down output DC voltage of 9V and 5V, output ripple ≤50mV, and output efficiency ≥80%, for use in control circuit and interface circuit design.

[0017] 3) The control circuit identifies and controls the input laser analog signals of various parameters. While calling the program, it transmits the laser analog signal parameters to the display screen, completing the control and analog output functions of each laser analog signal. It has analog output functions for high-repetition-rate laser signals and coded laser (2-9 bit code) signals.

[0018] 4) The interface circuit receives instructions from the control circuit board to realize internal switch signal communication and transmission, with a serial port transmission baud rate of 9600 bits.

[0019] 5) The LCD screen can normally receive and display the laser simulation parameter information of the calling program through the serial port.

[0020] 6) The laser pulse tube meets the corresponding specifications and can output the required signal according to the pulse drive signal. The output wavelength is 1µm to 1.6µm, the output power is 10mW, the vertical divergence angle is 20° to 40°, and the horizontal divergence angle is ≤15°.

[0021] like Figure 3 The diagram shows the function definitions and working logic of 15 buttons.

[0022] This utility model adopts an integrated design, with an aluminum housing and an appearance combining an LCD screen and push-button switches, making it compact and portable. The LCD screen displays information such as the triggered signal button, its frequency, and code pattern; the power switch is a waterproof switch with an indicator light; and there is an output channel. An input voltage connector for the control circuit is provided for easy calibration, testing, and maintenance. The device has 15 laser detection indicator signal parameters corresponding to each compilation unit, allowing for convenient on-demand access.

[0023] This invention allows for quick selection of the desired laser detection signal via panel buttons, making it easy to operate, fast to recall, and highly efficient in product detection.

[0024] 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 coded laser / repetition rate pulse laser signal synthesizer, characterized in that, The device includes a housing, a DC power supply, a voltage regulator circuit, and a control circuit. The DC power supply, voltage regulator circuit, and control circuit are housed inside the housing. A control panel is located at the front of the housing, and the control panel includes pulse and repetition rate laser simulation buttons, an coded laser simulation button, an LCD screen, a self-test pilot, a power switch, a signal output switch, an output channel, and a debugging interface. The DC power supply is connected to AC mains power, the voltage regulator circuit is connected to the DC power supply, and the control circuit is connected to the voltage regulator circuit. The pulse and repetition rate laser simulation button, the coded laser simulation button, the LCD screen, the self-test pilot, the power switch, the signal output switch, the output channel, and the debugging interface are all connected to the control circuit.

2. The coded laser / repetition rate pulse laser signal synthesizer as described in claim 1, characterized in that, A support frame is provided on the shell.

3. The coded laser / repetition rate pulse laser signal synthesizer as described in claim 1, characterized in that, The DC power supply output has overvoltage, overload, and short-circuit protection functions.

4. The coded laser / repetition rate pulse laser signal synthesizer as described in claim 1, characterized in that, The voltage regulator circuit has filtering and secondary voltage stabilization performance, providing DC±5V voltage and output DC+9V and DC+12V voltages for the control circuit.

5. The coded laser / repetition rate pulse laser signal synthesizer as described in claim 1, characterized in that, The control circuit is used to simulate the analog signal requirements.

6. The coded laser / repetition rate pulse laser signal synthesizer as described in claim 1, characterized in that, The casing is made of aluminum.

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