A target simulation device for vibration image composite sensor

Abstract

The present invention discloses a target simulation device for a vibration image composite sensor, belonging to the field of wireless sensing technology. The device comprises a vibration signal file, a controller, a digital-to-analog converter, an amplitude regulator, a motion driver, a motor, a guide rail, and a target image model set; based on the data of an existing target, a simulated vibration signal file is generated; after receiving the generated vibration signal file, the controller converts the motion information in the vibration signal file into a control instruction and sends it to the motion driver, which generates a motor control signal to make the target image move on the guide rail according to the plan; on the other hand, the controller converts the distance information in the vibration signal file into a digital signal, and the digital-to-analog converter converts the received digital signal into an analog signal, which is sent to the amplitude regulator for amplitude regulation to simulate the vibration information of the target. The present invention does not require a large amount of field testing to support sensor research and development work, and can effectively improve the efficiency of research and development work.

Description

Technical Field

[0001] The present invention relates to a target simulation device for a vibration image composite sensor, and in particular to a simulation device for ground personnel and vehicle targets of the vibration image composite sensor. The device can simulate the characteristics of field personnel and vehicle targets in a laboratory environment and perform performance testing of the vibration image composite sensor. The present invention belongs to the field of wireless sensing. Background Art

[0002] Wireless sensor networks consist of a large number of nodes that self-organize to form a multi-hop network, enabling data collection, processing, and transmission. Sensor nodes capable of sensing various environmental variables serve as end nodes in the network. A vibration-image composite sensor is an end node that detects ground targets such as people and vehicles. A vibration transducer in this node detects ground vibration signals generated by target motion, fulfilling the node's duty cycle. When ground vibration characteristics meet preset conditions, the node's image sensor is triggered to acquire an image of the target. The target vibration signal and image information are processed and fused to generate target detection information. The development of a vibration-image composite sensor requires extensive field testing to support multiple processing steps, including acquiring target vibration signals, setting preset vibration characteristics, and fusing vibration and image information. Field testing requires extensive testing and verification under various scenarios, including target, distance, motion trajectory, and environmental conditions, requiring significant human, material, and time resources. Field testing is a major factor limiting the iterative progress of node development. Therefore, a target simulation device is needed to simulate target motion characteristics under various combinations of scenarios in a laboratory environment to effectively support the development of the composite sensor. Summary of the Invention

[0003] In light of this, the present invention provides a target simulation device for a vibration-image composite sensor. This device can simulate characteristic data in the laboratory under various combinations of targets, distances, motion trajectories, and environmental conditions. This eliminates the need for extensive field testing to support sensor R&D, effectively improving R&D efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A vibration image composite sensor target simulation device comprises a vibration signal file (1), a controller (2), a digital-to-analog converter (3), an amplitude regulator (4), a motion driver (5), a motor and a guide rail (6), and a target image model set (7);

[0006] The vibration signal file (1) is used to provide a digital file of a vibration signal simulating target motion;

[0007] The controller (2) outputs a control instruction containing motion information and a digital signal containing vibration information according to the received digital file;

[0008] The digital-to-analog converter (3) is used to convert the received digital signal into a digital-to-analog signal and output an analog signal;

[0009] The amplitude regulator (4) is used to adjust the amplitude of the received analog signal to simulate the vibration information of the target;

[0010] The motion driver (5) is used to receive control instructions from the controller (2) and generate a motor drive signal;

[0011] The motor and the guide rail (6) are driven by the motion driver signal to move along the guide rail according to the plan, so as to simulate multiple target motion scenes;

[0012] The target image model set (7) consists of a plurality of target models of different sizes and postures, which are selected according to the characteristics of the target to be simulated. The target images are mounted on the motor and move with the motor;

[0013] The simulation implementation process is as follows:

[0014] Based on the data of the existing target, a simulated vibration signal file is generated; after the controller receives the generated vibration signal file, it converts the motion information in the vibration signal file into a control instruction and sends it to the motion driver, which generates a motor control signal to make the target image move on the guide rail according to the plan; on the other hand, the controller converts the distance information in the vibration signal file into a digital signal, and the digital-to-analog converter converts the received digital signal into an analog signal and sends it to the amplitude adjuster for amplitude adjustment to simulate the vibration information of the target.

[0015] The beneficial effects of the above technical solution of the present invention are:

[0016] This invention aims to address the significant human, material, and time costs associated with field testing during existing vibration image sensor development. By proposing a device for simulating ground target motion characteristics in a laboratory environment, the device can simulate characteristic data from different targets, at varying distances, with varying motion trajectories, and under varying environmental conditions in the laboratory, eliminating the need for extensive field testing to support sensor development. This effectively reduces human, material, and time costs and improves R&D efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a block diagram of a simulation device according to the present invention; DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] A vibration image composite sensor target simulation device comprises a vibration signal file (1), a controller (2), a digital-to-analog converter (3), an amplitude regulator (4), a motion driver (5), a motor and a guide rail (6), and a target image model set (7);

[0021] The vibration signal file (1) is used to provide a digital file of a vibration signal simulating target motion;

[0022] The controller (2) outputs a control instruction containing motion information and a digital signal containing vibration information according to the received digital file;

[0023] The digital-to-analog converter (3) is used to convert the received digital signal into a digital-to-analog signal and output an analog signal;

[0024] The amplitude regulator (4) is used to adjust the amplitude of the received analog signal to simulate the vibration information of the target;

[0025] The motion driver (5) is used to receive control instructions from the controller (2) and generate a motor drive signal;

[0026] The motor and the guide rail (6) are driven by the motion driver signal to move along the guide rail according to the plan, so as to simulate multiple target motion scenes;

[0027] The target image model set (7) consists of a plurality of target models of different sizes and postures, which are selected according to the characteristics of the target to be simulated. The target images are mounted on the motor and move with the motor;

[0028] The simulation implementation process is as follows:

[0029] Based on the data of the existing target, a simulated vibration signal file is generated; after the controller receives the generated vibration signal file, it converts the motion information in the vibration signal file into a control instruction and sends it to the motion driver, which generates a motor control signal to make the target image move on the guide rail according to the plan; on the other hand, the controller converts the distance information in the vibration signal file into a digital signal, and the digital-to-analog converter converts the received digital signal into an analog signal and sends it to the amplitude adjuster for amplitude adjustment to simulate the vibration information of the target.

[0030] The following is further described by more specific examples:

[0031] like Figure 1 As shown, a vibration image composite sensor target simulation device includes: a vibration signal file 1, a controller 2, a digital-to-analog converter 3, an amplitude regulator 4, a motion driver 5, a motor and a guide rail 6, and a target image model set 7. Figure 1 Connect the lines.

[0032] Vibration signal file 1 is a digitized file of the vibration signal of the simulated target's motion. This file can have different distances, speeds, and noise levels depending on the characteristics of the simulated target. Controller 2 outputs the file and simulates the device according to requirements based on the input vibration signal file, including pausing and starting. Simultaneously, the controller receives control signals from the vibration image composite sensor, triggering the motion driver to execute an action. A digital-to-analog converter 3 converts the digital signal output by the controller into an analog signal. Amplitude regulator 4 adjusts the amplitude of the output analog signal to meet the interface requirements of the vibration image sensor. Motion driver 5 receives control commands from controller 2 and generates a motor drive signal. Driven by the motion driver signal, the motor and guide rail 6 move along the guide rail according to a predetermined plan. Multiple motors can be used to simulate multiple target motion scenarios. Target image model set 7 consists of multiple target models of different sizes and postures, selected based on the characteristics of the target to be simulated. The target images are mounted on the motor and move with the motor.

[0033] The following uses the example of a single person moving tangentially at a distance of 30 meters from the sensor node to illustrate the implementation process of the simulation device:

[0034] (1) Vibration signal file generation: Based on the existing data of the tangential moving personnel target, the target distance, target speed, target weight, and environmental noise are corrected to generate the vibration signal file for this simulation.

[0035] (2) Target image selection: Select an image of a target at a distance of 30 meters and install it on the motor.

[0036] (3) Vibration signal loading: Input the vibration signal file and simulation control file into the controller to complete the vibration file loading.

[0037] (4) Vibration signal simulation: When the target simulation starts, the vibration signal is converted from digital to analog and the amplitude is adjusted according to the control file settings and then input to the sensor node.

[0038] (5) Image target simulation: The controller controls the motion driver according to the image start signal output by the vibration image composite sensor, and drives the motor to drive the target image to move along the track to complete the target image simulation task.

Claims

1. A vibration image composite sensor target simulation device, characterized in that: It includes vibration signal file (1), controller (2), digital-to-analog converter (3), amplitude regulator (4), motion driver (5), motor and guide rail (6) and target image model set (7); Vibration signal file (1) is used to provide a digital file of the vibration signal of the simulated target movement; The controller (2) outputs a control instruction containing motion information and a digital signal containing vibration information based on the received digital file; The digital-to-analog converter (3) is used to convert the received digital signal into a digital-to-analog signal and output an analog signal; The amplitude regulator (4) is used to adjust the amplitude of the received analog signal to simulate the vibration information of the target; The motion driver (5) is used to receive control instructions from the controller (2) and generate a motor control signal; The motor and the guide rail (6) are driven by the motor control signal and move along the guide rail according to the plan, so as to simulate multiple target motion scenes; The target image model set (7) consists of multiple target models of different sizes and postures, which are selected according to the characteristics of the target to be simulated. The target images are installed on the motor and move with the motor; The simulation implementation process is as follows: Based on the data of the existing target, a simulated vibration signal file is generated; after the controller receives the generated vibration signal file, it converts the motion information in the vibration signal file into a control instruction and sends it to the motion driver, which generates a motor control signal to make the target image move on the guide rail according to the plan; on the other hand, the controller converts the vibration information in the vibration signal file into a digital signal, and the digital-to-analog converter converts the received digital signal into an analog signal, which is sent to the amplitude adjuster for amplitude adjustment of the vibration information of the simulated target.

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