This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for fixed-angle traffic speed radar (hereinafter referred to as radar). This standard applies to the design, manufacture, inspection and acceptance of radar. SJ/T 10442-1993 General technical conditions for fixed-angle traffic speed radar SJ/T10442-1993 Standard download decompression password: www.bzxz.net
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for fixed-angle traffic speed radar (hereinafter referred to as radar). This standard applies to the design, manufacture, inspection and acceptance of radar.

GB 191 Graphical marking for packaging, storage and transportation
GB 6587.1 General outline for environmental testing of electronic measuring instruments
SJ 2584 Reliability identification test and acceptance test for radar equipment

Electronic Industry Standard of the People's Republic of China
SJ/T10442-93
General Technical Conditions
Generic specificaliun tor tratfic speedmeasuring radar at oncangle
Published on December 17, 1993
Implemented on June 1, 1994
Approved by the Ministry of Electronics Industry of the People's Republic of China Electronic Industry Standard of the People's Republic of China
General Technical Conditions for Tieneric Specitication for Traffle Speed ​​Measurement Radar rgles Subject content and this specification
SJ/T10442-93
This standard specifies the technical requirements, test methods, inspection rules and specifications, packaging, transportation, purchase and storage requirements of the standard must pass the speed test (hereinafter referred to as the test).
This standard does not limit the design, inspection and acceptance issued by the standard. 2 Reference standards
SI2584
3 Terminology || tt||Including prohibited storage and indication mark
Electric ear measuring instrument environment steam test total
By reaching the equipment, the light leaf identification test and acceptance test 3.1 Fixed remainder mode (fixed angle mode)
The weight reaches the special wave auxiliary H standard coordinate lacking quantity for the relevant non-scientific angle working mode. 3.2 Measure the error and
The difference between the measured speed and the actual value of the monthly standard speed information. 3.3 Price armor
In service enough The effective measurement is described in the world knowledge, the city antenna several sides to the standard car straight line quality distance. 3.4 The city road system reading
The measurement error caused by the low-frequency drop.
3.5 The measurement sensitivity of the low-frequency excitation
The low-frequency circuit of the hand can normally measure the required small-frequency input signal. 4 Technical requirements
4.1 Appearance
4.1.1 The outer support should not have quality marks, and the marks must be deformed before use. The light should be consistent with the title 4, and there should be no wrinkles, cracks and other indentations.
4.1.2 The text and symbols on the panel of the currency should be clear, correct, and the handwriting is not easy to erase. 4.2 Display devices and recording devices
Approved by the Ministry of Electronics Industry of the People's Republic of China on December 17, 1993 and implemented in 199601
SJ/T 10442-93
4.2.1 The display shall be digital, and the speed indicator shall have an appropriate delay time: the display shall ensure that at least two people can watch at the same time.
4.2.2 It shall have a recording device, and its recording device shall be able to record the vehicle number of the vehicle starting the measurement, the date and time of the measurement.
4.3 The step-by-step instrument
must have a slider to ensure that the transmission beam axis and the road angle are in step with the specified value. 4.4 Technical requirements
4.4.1 Working frequency
X band: f*25MHz
K band: Fa ±100MHz;
Ka band: f: 5MHza
: The working frequency is the rated value.
4.4.2 Simple transmission power
Product standard,
4.4.3 Test sensitivity of low-frequency circuit
Product standard.
4.4.4 Quality assurance of low-frequency circuit
When target speed is less than or equal to 100km/h: ±1km/h; when the speed is greater than 10akm/h: ±1%4.4.5 Test process
At least 20~150km/h.
4.4.6 The maximum effective distance is not less than 50 meters for medium-sized buses.
4.4.7 Full speed error
When the speed is less than or equal to 100km/h: ±% when the standard speed is less than 1001k/h
4.5 Radar power supply
This standard recommends the use of 12V DC power supply.
4.6 Radar signal
4.6.1 The radar should be able to detect the speed limit, limit the speed alarm and overspeed recording. For the selection of no recording device, no recording requirement is made).
.6.2 The radar should only have the function of identification. 4.6.3 The radar should have the function of power supply. 4.6.4 The radar can count the total amount of overspeed and detect the energy. 4.7 Safety detectionwww.bzxz.net
The leakage energy density value at 5gm away from the radar observation position and the viewing point should not be greater than 3gW/cm. 4.B Inactivation requirements
N value should not be less than h
4.9 Environmental recording
4,9,1 Mixing degree
For operation: -10-50℃:
h. Lock limit condition: 20--60℃;
c, busy storage condition; -40-70℃
Pregnancy condition: 50℃, 900%RI.241
SJ/T 10442-93
4.9.3 Vibration (need to reach the point where the operation is not energized): After probe test detection. It should meet the requirements of 4.1 and 4.6.1. 4.9.3.1 And hold the thin cable: sweep frequency cycle number 1~2 times. Frequency cycle source pressure: 5-$5.-5HzF
Sweep frequency: less than or equal to 1oct/min:b.
Fast shift constant value (peak value): 0.075~0.19mm (select any one value). 4.9.3.2 Resonance hold
Movement amplitude value (sample value): 1.59mm(5Hz≤10Hz)0.7fm(1nHasz5Hz);
0.19mm[25lz<≤55[z];
Time: 10min.
4.9.3.3 When the required frequency sweep frequency does not find the common point within the specified sweep frequency range, the movement should be reported under the condition of 55Hx0.191mm min:
4.9.3.4 Report the movement direction; 2 directions.
Note: The upper and lower directions specified by Party B are usually the same below. 4.9.4 Encountering transport (need to be reversed under the packaging case). Grip (fixed frequency, normal wave)
frequency, 5.10.20,30Hz
Damage speed: 9.8=2.5m/s
Duration of each point: Sm certificate:
Motion direction: % direction.
Free fall
According to the radar circulation conditions and work weight, the free fall height is required in the product standard according to Table 1; three free falls are made on the ground between the test surfaces (the degree of continuity is zero). Table 1 Free fall level
Product
t: (g)
Falling degree
4.9.4.3 Preparation (limited to 75
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