1、 Environmental adaptability control

1. lighting conditions
   • Avoid direct sunlightSimulators' light sources (such as LEDs and lasers) are susceptible to external strong light interference, resulting in distortion of output signals. It needs to be used in a dark room or shaded environment, or equipped with a light shield.
   • Uniform illuminationEnsure uniform lighting in the simulated area of the target, avoiding local areas that are too bright or too dark and affecting sensor response. Integral spheres or diffuse reflection plates can be used to assist in uniform lighting.
   • Environmental light stabilityDuring the testing process, it is necessary to maintain a constant ambient light (such as closing doors and windows, avoiding reflection of light when people are walking) to prevent noise caused by fluctuations in light intensity.
2. Temperature and Humidity
   • Working temperature rangeSimulators usually need to operate in an environment of 0-40 ℃. High temperatures may shorten the lifespan of light sources or reduce the performance of electronic components, while low temperatures may cause condensation or mechanical structure jamming.
   • humidity controlIf the humidity exceeds 80%, it may corrode the circuit board or cause mold on the optical components. Dehumidification equipment or desiccants should be equipped.
3. Vibration and impact
   • Avoid installing simulators near vibration sources such as motors and compressors, as vibration may cause optical components to shift or mechanical structures to loosen, affecting the accuracy of the target position.
   • Shockproof packaging should be used during transportation or movement to prevent damage to internal components.

2、 Optical system calibration and maintenance

1. Initial calibration
   • Wavelength matchingSelect the matching light source wavelength based on the spectral response range of the tested sensor (such as the visible light band of 400~700nm) to avoid testing errors caused by color differences.
   • Intensity calibrationCalibrate the output light intensity of the simulator using a standard optical power meter or illuminance meter to ensure consistency with the set value (error ≤± 5%).
   • Target position calibrationCalibrate the simulated position of the target using a high-precision displacement table or laser interferometer to ensure alignment with the sensor coordinate system (positioning accuracy ≤± 0.01mm).
2. regular maintenance
   • Clean optical componentsRegularly wipe lenses, filters, etc. with dust-free cloth and specialized cleaning solution to avoid dust or fingerprint contamination that can cause light intensity attenuation or scattering.
   • Check the lifespan of the light sourceThe lifespan of LED light sources is usually between 20000 to 50000 hours. It is necessary to record the usage time and replace aging light sources in a timely manner to prevent fluctuations in light intensity.
   • Mechanical structure inspectionCheck the lubrication and fastening bolts of moving parts such as the rotating table and translation table to prevent jamming or loosening.

3、 Electrical safety and compatibility

1. Power supply and grounding
   • Use a stable power supply (voltage fluctuation ≤ ± 5%) to avoid power supply noise interfering with the output signal of the simulator.
   • Ensure good grounding of the equipment (grounding resistance ≤ 4 Ω) to prevent electrical leakage or static electricity from damaging electronic components.
2. Interface Compatibility
   • control interfaceConfirm that the communication interface (such as USB, RS-485, Ethernet) between the simulator and the upper computer (such as PC, PLC) matches, and install the correct driver program.
   • Signal synchronizationIf synchronous triggering with the tested sensor is required, the trigger signal delay (usually ≤ 1ms) needs to be calibrated to ensure timing consistency.
   • data formatCheck if the output data format of the simulator (such as BMP, RAW, video stream) is compatible with the sensor parsing software.
3. Electromagnetic Compatibility (EMC)
   • Avoid using near strong electromagnetic fields (such as high-voltage lines and radio transmission towers) to prevent signal interference from causing target simulation distortion.
   • Use shielded cables to connect equipment and reduce radiation interference.

4、 Target simulation parameter settings

1. Dynamic range control
   • Set the output light intensity range of the simulator based on the dynamic range of the sensor (such as 0~4095 for a 12 bit camera) to avoid saturation or underexposure.
   • When simulating dynamic targets, it is necessary to ensure that the frame rate (such as 60fps) matches the sensor acquisition speed to prevent frame loss.
2. Target characteristic simulation
   • Shape and SizeGenerate precise target shapes (such as circles or rectangles) through DMD (Digital Micro Mirror Device) or LCD projection, with dimensions covering the sensor's field of view (FOV) requirements.
   • motion trajectoryIf simulating dynamic targets (such as vehicles and pedestrians), a smooth acceleration curve should be set to avoid sudden changes that may cause sensor tracking failure.
   • Reflectivity simulationSimulate the reflectance differences of different material targets (such as high reflective metals and low reflective fabrics) using neutral density filters or adjustable light intensity sources.
3. Background and interference simulation
   • Add background light or stray light to simulate real scenes (such as city roads and nighttime environments) to improve testing robustness.
   • Introduce noise signals (such as Gaussian noise, pulse noise) to verify the anti-interference ability of the sensor.

5、 Safety operation standards

1. Laser Safety
   • If the simulator uses a laser light source (such as Class 3B or Class 4), laser protective goggles must be worn and warning signs must be affixed to the equipment.
   • Avoid direct gaze at the laser exit to prevent retinal damage.
2. Mechanical safety
   • During the operation of moving parts such as rotary tables and translation tables, a safe distance should be maintained to prevent injury or collision.
   • The emergency stop button should be kept unobstructed for quick power cut-off.
3. data security
   • Regularly backup test data to prevent data loss due to equipment failure or misoperation.
   • Encrypt and store sensitive testing scenarios (such as military targets) to prevent information leakage.