What parameters should law enforcement recorders meet

The parameters of the law enforcement recorder should meet the following requirements:

(1) The size of the law enforcement recorder (excluding back clips and external equipment) is less than or equal to 120mm80mm40mm (length, width, height)

(2) The main color of the exterior of the law enforcement recorder is black

(3) The quality of the law enforcement recorder is less than or equal to 220g

(4) The protection level of the law enforcement recorder housing meets the IP56 requirements in GB/T 4208-2008

(5) The data interface of the law enforcement recorder complies with the requirements of 5.1 in GA/T 947.4-2015

(6) Law enforcement recorders can be randomly equipped with drivers that comply with the requirements of 5.4 in GA/T 947.4-2015

(7) In viewfinder preview mode, press the camera button to take a photo

(8) Law enforcement recorders can store logs, images, and audio and video information

(9) After the battery undervoltage alarm, the remaining capacity of the battery can ensure that the law enforcement recorder can record normally for no less than 5 minutes, but no more than 30 minutes

(10) The law enforcement recorder has night vision function. After turning on the night vision function, the effective shooting distance meets the requirements of the manual and is not less than 3 meters. At the effective shooting distance, facial features of the person can be clearly seen. The device with infrared fill light function should cover more than 70% of the captured image area at a distance of 3 meters

(11) Under the condition of environmental illumination not less than 8001x, there is no obvious color deviation between the displayed and replayed images of the law enforcement recorder and the color of the subject being photographed

(12) The law enforcement recorder can pre record audio and video information that is greater than or equal to 10 seconds before triggering at the nominal resolution limit

(13) The law enforcement recorder has a color display screen with a diagonal size greater than or equal to 3.81cm (1.5in)

(14) The law enforcement recorder can display the entire white test signal in playback mode. The upper limit of brightness when displaying the full field white test signal is greater than or equal to 250cd/m2

(15) The law enforcement recorder can display all white and all black test signals in playback mode. The ratio of brightness values between the full field white and full field black test signals is greater than or equal to 400:1

(16) The horizontal field of view angle of the law enforcement recorder camera is greater than or equal to 90 under all resolution conditions declared by the manufacturer

(17) The manufacturer of the law enforcement recorder's video declares that the set distortion under all resolution conditions is less than or equal to 20%

(18) The video recorded by the law enforcement recorder meets the requirements of one of the video performance levels specified in Table 1 of GA/T 947.2-2015 4.1. The video resolution is greater than or equal to 1280720, the video frame rate is greater than or equal to 25 frames/s, and the video resolution is greater than or equal to 400 lines

(19) The resolution of the photos taken by the law enforcement recorder is greater than or equal to 800 lines

(20) The law enforcement recorder adopts an automatic segmented recording method to record time, and the upper limit of the interval time between adjacent segments is less than or equal to 0.1s

(21) The working time of the law enforcement recorder battery meets the A-level requirements in GA/T 947.2-2015 4.1; When the battery is insufficient and replaced for power supply, the stored information is not lost

(22) Battery charging time is less than or equal to 8 hours

(23) Battery protection meets the requirements of GB/T 18287-2013

(24) When tested at a resolution of 1280720 and a frame rate of 30 frames per second, the law enforcement recorder can store dynamic video and audio images under the video performance rating declared by the manufacturer for no less than 10 hours

(25) The response time of the law enforcement recorder's recording, recording, photography, pause, and playback function buttons is less than 1 second; The response time of data search and retrieval operation buttons is less than 2 seconds

(26) The law enforcement recorder has an independent on/off button, which has anti misoperation function

(27) The time it takes for the law enforcement recorder to enter the viewfinder preview mode from pressing the power button shall not exceed 30 seconds

(28) The audio information recorded by the law enforcement recorder is clear and smooth during playback, with no obvious pauses or ambiguities

(29) The timing error between the law enforcement recorder's time and standard time is less than or equal to 3s/day

(30) The law enforcement recorder contacts and discharges, with a test voltage of 6kV; Air discharge, test voltage of 8kV. During the test, the function or performance of the law enforcement recorder may be temporarily lost or reduced, but it can recover on its own. After the test, the law enforcement recorder can work normally, and the data stored in the law enforcement recorder will not be lost

(31) The radio frequency electromagnetic field radiation immunity test meets the requirements of level 3 in GB/T 17626.3-2006: the test field strength is 10V/m, and the frequency range is 8OMHz~100OMHz. During the experiment, the law enforcement recorder will not change its state; After the experiment, the law enforcement recorder can function normally, and the data stored in the law enforcement recorder will not be lost

(32) Temperature (552) ℃, duration of 4 hours. During the test, the law enforcement recorder is in working condition and will not change during the test. After the test, the law enforcement recorder can work normally

(33) Temperature (602) ℃, duration of 16 hours, during which the law enforcement recorder is in a non working state, restored for 2 hours, and the law enforcement recorder can work normally

(34) Temperature (-303) ℃, duration: 2 hours. During this period, the law enforcement recorder was in a non working state, and there was no change in state during the process. The law enforcement recorder was able to work normally afterwards

(35) Temperature (-403) ℃, duration of 16 hours, during which the law enforcement recorder is in a non working state, restored for 2 hours, and the law enforcement recorder can work normally

(36) Temperature (402) ℃, relative humidity (933)%, duration of 4 hours, no state change during the process, and the law enforcement recorder can work normally

(37) Temperature (402) ℃, relative humidity (933)%, duration of 48 hours, during which the law enforcement recorder is in a non working state, restored for 2 hours, and the law enforcement recorder can work normally

(38) Lower temperature limit (-102) ℃, upper temperature limit (302) ℃, exposure time of 1 hour, conversion time of 3 minutes, 4 cycles, during which the law enforcement recorder is in working condition, and the law enforcement recorder can work normally afterwards

(39) The concentration of salt solution is (50.1)%, the temperature is (352) ℃, the spray time is 15min every 45min, the salt spray sedimentation is 1.0mL/h.80cm~2.0mL/h.80cm, and the duration is 48h. During this period, the law enforcement recorder is not working, and the rear law enforcement recorder can work normally, and the surface is free of rust

(40) Frequency range (10~55~10) Hz, displacement amplitude of 0.3Smm, 1 octave/min, X, Y, and Z directions for 30 minutes each. During this period, the law enforcement recorder was in working condition, and there was no permanent structural deformation, mechanical damage, electrical failure, or loosening of fasteners in the later law enforcement recorder and its internal structural units. The internal wiring, circuit board, and interface connectors of the law enforcement recorder are free from detachment, looseness, and poor contact. The device should be able to function normally and there should be no loss of stored data

(41) The waveform of the shock pulse is half sine, with an acceleration amplitude of 30g and a pulse duration of 11ms. The X, Y, and Z pulses are three times each, during which the law enforcement recorder is in operation. The post enforcement recorder and its internal structural units did not experience permanent structural deformation, mechanical damage, electrical failure, or loose fasteners. The internal wiring, circuit board, and interface connectors of the law enforcement recorder are free from detachment, looseness, and poor contact. After normal operation, there is no loss of stored data

(42) The bare machine falls from a height of 2000mm on a cement floor, with one drop from any four surfaces. During this period, the law enforcement recorder is in working condition. The post enforcement recorder and its internal structural units did not experience permanent structural deformation, mechanical damage, electrical failure, or loose fasteners. The internal wiring, circuit board, and interface connectors of the law enforcement recorder are free from detachment, looseness, and poor contact. After normal operation, there is no loss of stored data

(43) A law enforcement recorder with a charger interface, whose insulation resistance between the electrode of the charger or power adapter, or other conductive circuits connected to the power electrode, and easily accessible components is greater than or equal to 10M Ω

(44) For a law enforcement recorder with a charger interface, a 1500V, 50Hz test voltage is applied between the charger or power adapter electrode or other conductive circuits connected to it and easily accessible components, and there is no breakdown phenomenon during the test. After the experiment, the law enforcement recorder had no malfunctions and was functioning normally

The leakage current of a law enforcement recorder with a charger interface should comply with the requirements of 5.4.6 in GB 16796-2009

(46) Anti overheating meets the requirements of 5.6 in GB 16796-2009

(47) Conduct durability tests on the main components of the law enforcement recorder: power switch 3000 times, shutter 10000 times, LCD display and switch 2000 times, movable parts 3000 times, mode selection switch 3000 times, USB interface and connection cable 1000 times. After the test, it can work normally

(48) Adopting a built-in replaceable battery, under the condition of replacing the battery once, the working time of the battery can meet the continuous recording force of 10 hours

The law enforcement recorder can be connected to 4G SIM cards of China Mobile, China Unicom, and China Telecom to achieve wireless transmission function