1 Scope
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This standard specifies the classification and terminology interpretation, requirements, test methods, inspection rules and signs, packaging, transportation, storage, etc. of the vehicle reversing radar.
2 Normative introduction documents
The terms in the following documents become the terms of this standard by reference to this standard. For dated references, all subsequent amendments (not including errata content) or revisions
The editions do not apply to this standard, however, the parties to the study based on this standard are encouraged to study whether the latest versions of these documents can be used. The latest version of the undated reference document
Applicable to this standard.
3 classification and noun explanation
3.1 Classification
Digital signal reversing radar. Model name PS220. (J)-01, PS220.(J)-02, PS220.(J)-03...
3.2.1 No alarm status
The vehicle is not engaged in the reverse gear, and the reversing radar system is waiting to enter the working state.
3.2.2 Activation status
The state in which the reversing radar is located when the vehicle is engaged in the reverse gear.
3.2.3 Self-test status
When the reversing radar system is activated, the system itself (including: live wire, ground wire, internal signal processing circuit, etc.) is tested. When an open circuit or fault is found, the buzzer will be in place.
In a cyclic alarm state. If the troubleshooting system automatically enters the detection state.
3.2.4 Detecting alarm status
The normal working state of the system. If the system detects an obstacle during this time, the buzzer receives an alarm command to alarm.
4 requirements
4.1 Appearance requirements
The appearance is neat and tidy, the surface should not have obvious dents, scratches, rust, clear printing, correct, no loose parts, and the surface of the sensor should be painted with the surface of the installed bumper.
Unite.
4.2 Environmental requirements
4.2.1 Operating ambient temperature
a. Ultrasonic detector: -30 ° C ~ 80 ° C
b. Host controller: -30 ° C ~ 80 ° C
c. Display (LCD): -25°C~65°C
4.2.2 Storage ambient temperature
a. Ultrasonic detector: -40 ° C ~ 85 ° C
b. Host controller: -40°C~85°C
c. Display (LCD screen): -30 ° C ~ 70 ° C
4.2.3 Relative humidity
3%~93%
4.3 Electrical performance requirements
4.3.1 Ultrasonic detector
a. Rated working voltage: 120V (40KHz ± 1 KHz pulse)
c. Operating voltage range: 50V ~ 160V (40KHz ± 1 KHz pulse)
d. Maximum overload voltage: 180V (40KHz ± 1 KHz pulse) for 1 second
e. Operating frequency: 40KHz ± 1 KHz
f. Resonant capacitor: 2000pF ± 15%
g. Echo sensitivity: ≥-80dB
h. Yu Zhen: ≤1.4ms
i. Impedance: 500Ω
h. Maximum working temperature: 85 ° C
i. Minimum operating temperature: -40 ° C surface without snow and ice
g. Current consumption
Off state ≤1mA
Open state ≤10mA
4.3.2 Host Controller
a. Rated working voltage: 12V DC
b. Rated power: ≤5W
c. Working voltage range: 9~16V DC
d. Maximum overload voltage: 24V DC for 1 second
e. Reverse voltage: -18V DC for 1 second
f. Maximum working temperature: 80 ° C
g. Minimum operating temperature: -30 ° C
h. Current consumption
Off state "2mA under 12V DC
Open state "300mA under 12V DC
i. Radiation frequency: "1MW CW
g. Working frequency: 40KHz ± 1 KHz
k. Virtual loss in the frequency band
41MHz~68MHz "4nW
87.5MHz~118MHz "4nW
162MHz~230MHz "4nNW
470MHz~862MHz "4nNW
Equal to 1GHZ "250nW
Greater than 1GHZ "1uW
4.3.3 display (LCD screen)
a. Rated working voltage: 12V DC
b. Rated power: ≤5W
c. Working voltage range: 9~16V DC
d. Maximum overload voltage: 24V DC for 1 second
e. Reverse voltage: -18V DC for 1 second
f. Maximum working temperature: 65 ° C
g. Minimum operating temperature: -25 ° C
h. Current consumption
Off state "2mA under 12V DC
Open state "400mA under 12V DC
Sleep state: "10mA at 12V DC
j. Buzzer volume: (85 ± 10) dB / 10m / 12V DC. (At a rated operating voltage of 12V, 10cm directly above the buzzer, the measured volume is (85 ± 10) dB.
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