Some standard content:
[CS93.080.20
People's Republic of China Public Security Industry Standard GA/T 508—2004
Road Traffic Signal Countdown Display
Roari Trafficcounting down displayunit2004-08-09 Issued
Ministry of Public Security of the People's Republic of China
2004-10-01 Implementation
GA/ 508—2004 Normative: Use the document to define the relevant terms, classification and nomenclature, and to determine the age and orientation of the vehicle. 10. The standard includes the following: transmission, secretion and survival (normative recording of the communication timer) Appendix A is the normative standard. This standard is issued by the Ministry of Public Security of Road Traffic Safety Administration. This standard is proposed and approved by the Technical Committee for Standardization GA/T50B-2004. This standard is developed by Nanjing Public Security Technology Department, Nanjing Public Security Bureau Traffic Patrol Brigade, Beijing Duolun Precision System Co., Ltd., and the Traffic Management and Research Institute of the Ministry of Public Security. The main contributors of this standard are Chen Bing, Yu Junhua, Ge Haifeng, Zhang Yazhong, and Tang Yangjia. 1. 1. Fan Guo. tt. Road traffic signal countdown display. GA/T 508—2004
This standard specifies the classification and designation, requirements, or testing procedures, monitoring, installation, marking, location, input and storage of road traffic signal countdown indicators.
This standard is applicable to alternative signal indicators used on the road. 2 Normative references
The clauses in the following documents shall become the clauses of this standard through the reference of this standard. For all referenced documents with a date, all subsequent amendments (excluding errors) or revisions shall apply to this standard. However, the lack of agreement on the various forces of the standard can make the latest version of this standard applicable to all undated referenced documents, the latest version of which applies to this standard, G/T2423.7-2002 Environmental testing for electrical and electronic products Part 2: Test A: Low temperature (idIIF68-2-1.101
GB/T2425.22001 Environmental testing for electrical products Part 2: Test B: High temperature (idIIF68-2-1.101
IEC68-22:19742||tt ||GH/2423.3—93 Electrical and electronic products heat environment test specifications test Ca: Caution heat type (egV11C68-2-3:1954.
CK/T2423.01995 Electrical and electronic products environmental test Part 2: Test force method test F: and vibration (positive tidt1Et:826:1982
G/T2423.171993 Electrical T core product period environmental test current process test load K salt recruitment test method: 1F56- 3-11:199:)
GB4208-1003 External lighting road level P code 998
GH4599-1984 Automobile headlight distribution
GB4-0 optical signal total color
GH1486 Road traffic electronic installation specification
GB4337200S Road traffic Kai and lights
G/T27624--298 Electric super installation wear test and measurement technology. Electric rapid exposure to the original shock group resistance test (1d: 1G:000- 1:1985)
GR/T17i26.5—1999 Electrical compatibility test technology for direct current (impact) expansion test (ictJEC:51000-4-=:-3953
G5U16—12 Electrical installation equipment grounding installation and test specificationGA47—2092 Road traffic signal system 3 Terms and definitions
The following terms and definitions apply to this standard. 3. 1
Countdown display (hereinafter referred to as reading timer) cuumlingd malisphanit is a device that can display the corresponding road traffic signal counter average remaining time:GA/T 519—2004
Digital display countdown timer enminglownuueruldisplayunit A countdown timer that displays the signal phase time with standard 7-digit code. 3.3
simulated timer ouuntiadyynyimnlailvedisplayunit uses optical transmission to simulate the display of material level time. 3.4
commanunicationmethadcountingdowndispluyumit communication reading timer
through digital communication, and road traffic signal control machine world bank digital mud communication reading timer 3.5
studying tethionl euunting duwndisplayuml#learning or countdown timer
can check the signal pole position time, and can automatically adjust the displayed countdown timer, 3.6
learning status sludyingntalas
learning mode 1 time in the selected stop normal display. To the signal phase time selected line receiving measurement display total 3.7
yellow flashing control flashingyellmwrmitrol shunting light signal with a fixed rate flashing light mode GA4/-2002 3.-23
signal position signaiphase
within a signal period, one or more traffic flows get the right of way at the same time. GA472002 3.2
4 points and the book
4.1 Classification of countdown timers
4.1.1 Classification by display method or
According to the core method, for example, the countdown timer can be divided into digital easy-to-read timer, micro-display countdown timer 4. 1.2 Classification by core working method
Classification by working method, for example, the timer can be divided into common type timer and user-friendly type countdown timer. 4.1.3 Classification by power supply method
According to the maximum output type, the timer can be divided into self-connected type countdown timer and group beacon type. 4.2 The name of the countdown timer
The model of the timer can be non-display type, two-type power supply method, personal collection custom code group skin, DX
Entrepreneur representative
The power supply method is power-on type: 1 signal light power type! TWorking mode: TTest mode, XLearning mode)
Display mode (product display is simulated display) Road adapter number digital time recorder 2
5 Requirements
5.1 Appearance, size, material and structure 5.1.1 Appearance
GA/T 608—7Q04
The inner and outer surfaces of the timer case should be smooth and clean, without dents, scratches, cracks, shapes and etc.: the surface should have a solid anti-rust and anti-corrosion (coating) layer, the moving parts should be flexible, and the fixed parts should not be loose or not: the display unit and the timer should be connected tightly. 5.1.2 Dimensions
5.1.2.1: The digital display countdown timer
is used to auxiliary display the effect of 2 pedestrian chasing signal lights to display the timing light. The size is mm or mxs0cm, and the allowable size tolerance is 2K.
The dimensions of the digital display of motor vehicle signals and lights shall comply with the requirements of Table 1. Table 1 Dimensions of the reading timer
Extension length of the optical center
5.1.2.2 Analog display countdown timer
101--4:
.C--ac
T52-FC
The dimensions of the analog display timer for light pressure display of pedestrian crossing signal lights shall not be less than × cm. The dimensions of the analog display timer for motor vehicle signal lights can be designed accordingly based on the size of the opening and the size of the road traffic light.
5. 1. 3 Materials
The timer box and the fence shall comply with the requirements of 48372003111..2. 5.1.4 Structural performance
The box of the timer should be designed to meet the requirements of the user, and should be easy to install, use and maintain. For example, the opening degree of the door of the machine should be greater than the opening degree of the box door. After closing, it should not be loose or deformed. 5.2 Text and signs
5.2.1 Slow requirements
All signs, text, graphics and recommended symbols should be audible and smooth. 5.2.2 Connection signs and instructions
Each terminal on the vehicle shall be marked with a safety mark according to the official number of the vehicle. The marking shall contain detailed instructions before use. 5.2.3 Safety markings
The grounding terminal of the timer shall be marked with a safety mark. For electrical components with a reverse current value of no more than 10V and a direct current value of no more than 100V, a warning sign shall be set at a prominent position. 5.2.4 Grid The countdown timer must have a nameplate. The nameplate should be placed on the outer surface of the semi-fixed installation countdown timer without affecting the position of the timer indication. The size of the nameplate should be as appropriate as possible to the type of device. The nameplate content should meet the requirements of .1. 5.3 Requirements for internal electrical devices
5.3.1 General requirements
The internal electrical devices of the countdown timer should be reasonably arranged to facilitate installation and maintenance, with clear internal conditions, and the parts should be clean.
5. 3, 2 The power supply part should be equipped with a protective gastrectomy and a central source liquid tank GA/T 50B—2004
5.3.3 Wiring terminals and conductors
The wiring terminals should be installed firmly and should not be loosened during normal operation and connection. After the wires are properly connected, they should not be loosened without any damage. The wires inside the countdown timer should be properly protected, and the insulation of the wires will not be damaged by other sharp components. The wiring harness and wiring should be properly arranged so that other wires not related to the operation will not be affected during connection and connection operations. The wire holes on the chassis need to be angled and should not have sharp edges. The wires should be installed with wire clamps and special parts to ensure the firmness of the wiring and good contact. 5.3.4 Grounding||t t||The timing screen is designed with a special grounding terminal. All metal parts that are easily touched in normal operation in the chassis should be effectively grounded. The metal screen shell and the grounding wire of all parts carrying 22UVC voltage should use a special green/yellow effective grounding wire. 5.4 Basic functions
5.4.1 Display
The code is displayed in the form of standard 7-digit small numbers (<09), and its color should be consistent with the color of the corresponding road traffic light. The value is the corresponding signal time, and the 1-digit digital display timer displays the maximum display number of 99, the 2-digit digital display timer displays the maximum display number of 159, and the 3-digit digital display timer displays the maximum display number of S99.
The analog product countdown timer displays the corresponding number in a torch-shaped light that decreases every time, and its color should be consistent with the color of the corresponding road traffic light.
5.4.2 Communication type countdown timer
5.4.2.1 Communication coordination
The communication protocol between the communication type countdown timer and the road traffic signal controller is as follows, 5.4.2.2 Communication protocol
The communication type countdown timer displays the remaining time of the signal phase according to the command of the road traffic signal controller. The communication between the countdown timer and the road traffic signal controller can be carried out once per second or once when the signal phase changes. The communication method must ensure real-time response when the signal phase is changed.
When the traffic signal controller is started, the countdown timer should display a black screen; when the traffic is normal, the countdown display should decrease. When the traffic is interrupted, or the road traffic control machine enters automatic control, the countdown timer should be able to display the screen within 2 5 seconds.
5.4.3 Learning mode timer
5.4.3.1 Test signal requirements
The learning mode timer is pre-set with a virtual color display on the board of the learning mode control device. The test point should test the high level synchronized with the display color for test use.
5.4.3.2 Learning status
When the road traffic control machine is turned on, the signal quality is collected, or the road traffic control machine switches from automatic control to semi-automatic control, the learning mode timer should enter the learning status. The time and display of the learning state shall meet the following requirements: The learning countdown timer shall display black after 2 learning cycles. 5.4.3.3 Timing state
After entering the normal timing state, the learning countdown timer shall meet the following requirements: The display shall be consistent with the corresponding phase, and the time error shall not exceed 0.3. The display of the timer shall be continuous, without code holes or missing codes. When the road traffic control machine is interrupted and the control is switched to human resources control, the timer shall be able to display the current number on the screen.
5.5 Optical performance
5.5.1 Luminous intensity
GA/T508—2004
The initial light intensity of the timing device of the auxiliary guide and pedestrian signal shall not exceed the provisions of Table 2. In the specified illumination area of the timer, the luminous intensity shall be equal, that is, the luminous intensity at any point in the area shall not be lower than the minimum value in the corresponding effective value specification direction. 5.5.2 Altitude adjustment Horizontal angle 1 Unit: tt|| For motor vehicle countdown timer, within the visible countdown timer lighting area, the luminous intensity shall be uniform and within the specified range of the area. The ratio of the maximum value to the minimum value should be less than 10. The average value of the average value of the average value of the timer at each evenly distributed measuring point (the point is the diameter of the whole 5m) should not exceed the requirements of Table 3. Table 3 Minimum value of the timer
Vertical point angle
Left push down>
5.6 Chromaticity
Underwater distribution
Base
The color coordinates of the light emitted by the timer should be within the range specified in Table 4. Color
Table auxiliary timer light color coordinate range
5.7 Electrical safety
5. 7. 1 Power adaptability
Cross-point
Color
Each timing bottle is first set as: AC220V5CHz When the power supply is within AC22CV-44V.50H±2H25
GA/1508-20C4
The internal timing should be able to work properly.
5.7.2, Insulation
The insulation resistance between the live parts and the box of the countdown timer should not be less than 1UMs1. After constant temperature and constant source test, the junction resistance should not be less than 5 M2.
5.7.3 Dielectric strength
The timer should withstand the test voltage of F0tz.1500V (AC effective value) 1:nin, and there should be no flashover or breakdown. After the test, the timer should have no electrical discharge and energy stop. 5.7.4 The leakage current
between each pole of the power supply and the timer shell should reach 1.0mA.5.7.5 The external energy level of the timer and the controller of the casing protection grade
should not be less than 11>53. 5.7.6 Grounding regulations
5.7.6.1 Connect the following residual height to make a permanent ground, which can be connected to: a) during installation or during grounding; 1) when there is a problem with the insulation, it may become energized. 5.7.5.2 Grounding continuity
Necessary devices shall be used to ensure that the grounding can be continuous. The movable connectors that are not easily damaged shall ensure good electrical contact. 5.7.6.3 The grounding terminal shall be fixed to the core and connected to the core. The connection shall be fixed according to the stress to prevent accidental loosening. a) The terminal shall not be loose under the influence of the light; 6) The tightening device shall not be able to loosen accidentally; and c) The grounding connection or its parts shall be made of stainless steel or other stainless steel materials with a stainless surface; and the connection surface shall be a metal surface.
5.7.E.4 The resistance between the grounding terminal and the accessible parts must not exceed 6.5.7.7 Protection against electric shock
After the new timer is installed, when the timer is changed due to replacement of components, its live parts should not be accessible. When the countdown timer is adjusted to the position specified in the manufacturer's safety manual, its live parts should be removed and its safety protection period will be extended. 5.8 Electromagnetic Immunity Performance
The output of the timer should meet the requirements of 2% or 64% of the test station. The power is allowed to be temporarily reduced or lost, but it should recover automatically after the test. The learning reading timer should be able to enter the normal state within 2 days and display the status. The electromagnetic interference test result of the
reading timer should meet GB/T17625.5--1999 Level 2 requirements, that is, the basic vehicle function is allowed to be low or faulty, and after the test, it can automatically stop normally. The single-type countdown device should be able to enter normal timing within 2 signal cycles. It is also in the state:
5.9 Environmental adaptability requirements
5.9.1 High temperature resistance performance
Conduct a high-temperature test. During and after the test, the countdown timer should work without electrical faults. The plastic parts used for the timer should not have defects such as deformation, twilight, and light elasticity changes. There should be no cracks in the case. 5.9.2 Low temperature resistance performance
GA/T 508-2J04
Conduct a low-temperature test. During and after the test, the countdown timer should work without electrical faults. The plastic parts used for the timer should not have defects such as deformation, twilight, and light elasticity changes. There should be no cracks in the case. 5.9. 3 Heat resistance performance
The timer is subjected to constant temperature and humidity test. During and after the test, the timer should be normal without any fault. After the test, its insulation resistance and dielectric strength shall meet the requirements of 5.7.2 and 5.7.3. 5.9.4 Salt spray corrosion resistance
Countdown timer is subjected to 48h toxicity test, and all parts should be strictly checked for rust. The number of rust points should be less than S in 1000 square meters of area, and the bottom of the countdown timer should be able to work normally. 5.10 Vibration resistance
Countdown timer is subjected to alarm test, and the timing should be able to work normally after the test; there is no looseness of the internal structural unit: the internal structure is not permanently empty, mechanical damage: the internal circuit, circuit cutting, connection parts are loose or the operation is bad or phenomenon, 5.11 Working stability
Timer is connected to the road traffic signal control machine into normal working state, and it is continuously powered on for 1215h, and no mountain should appear. In the test, the rising timer should be reliable, and the normal cutting timer should not have any vertical phenomenon. 6 Inspection methods
6.1 Appearance, size, material and structure inspection
6.2 Text and logo inspection
Inspect the wiring mark, safety instructions and nameplate of the timer by daily testing or by using necessary tools. They shall meet the requirements of 5.2. 6.3 Internal electrical equipment inspection
Inspect the power supply terminals, wiring, wiring of the timer by daily testing or by using necessary tools. They shall meet the requirements of 5.3.
6.4 Basic function test
6.4.1 Indicator function test
Correctly connect the timer with the road traffic signal controller and the crossing signal lamp, and turn on the power. Set the traffic signal control machine to the fixed cycle 1.1 working mode, and observe the display of the countdown timer, which should meet the requirements of 5..1. 6.4.2 Communication type countdown timer
The countdown timer shall be connected to the road traffic signal control machine<or the P machine with the test software and the road traffic signal control machine according to the requirements of 5.4.2. Connect the appropriate power supply, and the timer shall display correctly according to the communication content of the road traffic signal control machine (minus the PC), and the display shall meet the requirements of 5.4, 2. The countdown timer shall be connected to the P machine> and the display shall meet the requirements of 5.4.1. The display of the countdown timer shall meet the requirements of 5.4.1:
6.4.3 Learning type countdown timer
6.4.3.1 In the state
, correctly connect the countdown terminal to the road traffic signal control machine and turn on the power. Set the road traffic signal control machine to the regular period working mode. Within 2 credit periods after the road traffic signal machine switches to the regular period working mode, the timer shall comply with the requirements of 5.4.3.3 and
change (increase and decrease respectively) the cycle length of the traffic signal countdown timer according to the requirements of 5.4.3.2. 6.4.3.2 In the normal timing state, correctly connect the countdown timer to the previous road traffic signal control machine and the road traffic signal control machine and turn on the power, set the road traffic signal control machine to the regular period working mode, and when the timer enters the timing state, observe its maximum display and see if it meets the requirements of 5.4.3.3. 508—2004
Evil requirements,
Use the time base quality of not less than 50ms to measure the waveform of the test lane change signal control machine and the output of the model road intersection signal control machine. Compare the error between the two. The time error of the test timer should meet the requirements of b.1.3.3. When the countdown timer is in the timing state, the road intersection signal control machine is set to the fixed period control mode. The timing error display meets the requirements of 5.1.3.3.
When the device is normal Timing account penetration, set the road traffic situation control machine from the fixed cycle working mode to the light-off mode or the internal control, the countdown timer can meet the requirements of 4 and 3. 6.5 Optical performance test
6.5.1 Countdown timer luminous intensity test
) Test reduction, the device and equipment should include GB439-195475.1: The diameter of the light-receiving surface of the measuring instrument is between 1 and 1 of the reference center of the test, and the actual measurement position of the two bases is in accordance with the provisions. The deviation of the position and position of the countdown timer shall not exceed the above [5d) www.bzxz.net
rated voltage, all the light-emitting devices of the same color - the sample light emission tends to be stable! , measure the luminous intensity at the specified time in 5.5, [should meet the requirements of 5.5.1) with this report, measure the brightness of the countdown timer for other colors, and all shall meet the requirements of 5.3.1. 5.2 Countdown timer brightness test
test section, device and equipment shall meet the requirements of 5, rated voltage, light up all the light-emitting devices of the same color After the light source is illuminated, select 4 absolute measurement points and measure the color of the light source at 5.5. The color of each point should meet the requirements of 5.2. Similarly, measure the color of the light source at the same time. The color of the light source should meet the requirements of 5.2. 6.6 Chromaticity test
According to the provisions of R, T8117-2301, measure the color of the light source at the same time. The color of the light source should meet the requirements of 5.5. 6.7 Electrical safety test
6.7.1 Power supply adaptability test
6. 7. 1. T test device
The test device is a variable power supply with a voltage of 0.1V. 6.7.1.2 Test steps
The power supply voltage and alarm of the countdown timer and the matching road variable signal control machine, the road variable signal control machine and the road traffic signal lamp are all set to the rated value. Connect the simple one-inch device to the road traffic signal control machine and the road traffic signal lamp, turn on the power supply, and set the road traffic signal control machine to the fixed cycle working mode. After the countdown timer is normal, it will work for 30m. b: The power supply voltage, working time and power supply voltage of the countdown timer should meet the requirements of .? .:. Table 5 Electrical adaptability test
6.7.2 Insulation resistance test
Countdown timer is powered on and in a non-operating state. Power supply voltage
36: V.43 Hz
26= Y.J2 Hz
176V.43Ha
-75V.52Hz
After adding 50(V voltage between the electrical enclosures, measure the insulation and it should meet the requirements of 5.7.2. 6.7.3 Dielectric strength test
It is necessary to be powered off and in a non-operating state. fA/T 5082004
A test voltage of 15JJV, Hz is applied between the live parts and the machine pins. The test voltage shall be increased to a set value in: 53-10 and maintained at a set voltage value for 1in. The detection timer shall comply with the requirements of .7,3. 6.7.4 Leakage current measurement
The leakage current shall comply with the requirements of 6.15 in CB14%97-2003. The timer shall meet the requirements of 5.7.4. 6.7.5 The enclosure protection and other equipment shall be tested and tested according to the requirements of 6.R in GB: 4887-2003. The test results shall also meet the requirements of 5.7. 6.7.5 Grounding 6.7.1 Check the grounding metal parts and grounding continuity by visual inspection, 6.7.6.2 Check the grounding connection by daily inspection and on-site inspection. 6. 7.6.3 Contact resistance measurement
The contact resistance between the grounding strip or the grounding contact and the accessible metal shall meet the requirements of 5.6. 6.1.7 Protection against electric shock
The test shall meet the requirements of 5.7./, and if necessary, the test shall be carried out using the standard test method specified in B42081S93. 6.8 Electromagnetic immunity test
6.8.1 Electric fast transient impulse immunity test 6.8.1,1 Test conditions and equipment
Climate conditions,
Environmental humidity: 10℃~35℃
Relative humidity: 45%--65%
The test fast seat decomposition skin flushing micro-emission should comply with (B/亀17h2%, 1-1998, the requirements of the first jin leather, 6.8.1.2 Test method
6.1.2. Direct power supply timer
Correctly reverse the countdown belt and the road handover signal control machine, and set the road empty signal control machine to the fixed cycle working mode, For example, the meter is required to be grounded, and the test is carried out after the meter is normally timed. The verification arrangement shall comply with the requirements of .2 in /7172, 4--1558. The test voltage polarity is positive or negative, and the test duration is 2mi?. The coupled port is the timer power supply terminal. The test voltage should be added between each AC power line and the ground. The test voltage is 2kV (selectable value) and the key frequency is EH2. After the test is released, the meter can meet the requirements of 5.8. 6. 1, 2.2 First light electric timer, countdown timer and end of road traffic signal The control machine is properly connected, and the traffic signal control machine of the Fan Road is in full cycle. The timer is connected to the battery according to the requirements, and each group of power supply ports of the countdown timer is connected to the power supply port. After the timer stops timing, the test is carried out. The layout of the laboratory meets the requirements of GH/17826.4-398 7.2. The test voltage can be positive or negative. The test duration is °i. The test port is the power supply port of the countdown timer. The test voltage should be added between each AC power line and the battery one by one. The test voltage is ? k (peak fish), and the test rate is 5kTJx
After the test, the test result meets the requirements of 5., and so on, the power supply ports of other equipment shall be tested. 6.8.2 Wave immunity test
6.8.2.1 Test components and devices
Air chain conditions:
—Hot air temperature and pressure, 10~35
-Relative humidity: 4%%-~83%:
4 Test month The liquid tank generator and the combined/large steel network shall meet the requirements of GB/T17626.5-3.
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