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GB/T 21436-2008: Parking distance monitoring and warning device for motor vehicle Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 21436-2008: Parking distance monitoring and warning device for motor vehicle---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT21436-2008GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.020 T 04 Parking distance monitoring and warning device for motor vehicle ISSUED ON: FEBRUARY 15, 2008 IMPLEMENTED ON: SEPTEMBER 01, 2008 Issued by: General Administration of Quality Supervision, Inspection and Quarantine of PRC; National Standardization Administration. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 5 4 Model compilation rules ... 6 4.1 Product code ... 7 4.2 Category code ... 7 4.3 Group code ... 7 4.4 Design No... 7 4.5 Variant code ... 7 5 Requirements ... 8 5.1 General provisions ... 8 5.2 Structure ... 10 5.3 Functional requirements ... 11 5.4 Protection performance ... 15 5.5 Abnormal power supply voltage resistance ... 16 5.6 Electromagnetic compatibility ... 17 5.7 Temperature resistance ... 17 5.8 Vibration resistance ... 18 5.9 Salt spray resistance ... 18 5.10 Temperature and humidity cyclic change resistance ... 18 6 Test method ... 19 6.1 Structural inspection ... 19 6.2 Functional inspection ... 19 6.3 Protection performance test ... 23 6.4 Abnormal power supply voltage resistance test ... 23 6.5 Electromagnetic compatibility test ... 23 6.6 Temperature resistance test ... 24 6.7 Vibration resistance test ... 24 6.8 Salt spray resistance test ... 24 6.9 Temperature and humidity cycle resistance test ... 24 7 Inspection rules ... 24 7.1 Qualified documents and marks ... 24 7.2 Inspection categories ... 24 7.3 Exit-factory inspection ... 24 7.4 Type inspection ... 25 7.5 Acceptance inspection ... 27 8 Marking, packaging, storage, preservation ... 27 Parking distance monitoring and warning device for motor vehicle1 ScopeThis standard specifies the requirements, test methods, inspection rules, signs, packaging, storage, custody of parking distance monitoring and warning devices (hereinafter referred to as distance monitoring and warning devices). The parking distance monitoring and warning device cannot replace the driver's automatic parking; it is not a device that alarms other people or objects in the parking area. The device is only an auxiliary means for parking and cannot reduce the driver's responsibility for parking. This standard applies to Classes M and N vehicles. Note: The functional requirements of this standard are formulated based on the use of ultrasonic sensor technology. With the development of other sensor technologies, the possibility of modifying the functional requirements is not excluded.2 Normative referencesThe provisions in following documents become the provisions of this Standard through reference in this Standard. For the dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard; however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 2423.17 Basic environmental testing procedures for electric and electronic products - Test Ka: Salt mist (GB/T 2423.17-1993, eqv IEC 68-2-11:1981) GB/T 2423.22 Environmental testing - Part 2: Test methods - Test N: Change of temperature (GB/T 2423.22-2002, IEC 60068-2-14:1984, IDT) GB/T 2828.1 Sampling procedures - Part 1: retrieval by acceptance quality limit (AQL) for lot-by-lot inspection sampling plan (GB/T 2828.1-2003, ISO 2859- 1:1999, IDT) GB/T 4942.2 Degrees of protection provided by enclosures for low-voltage apparatus (GB/T 4942.2-1993, eqv IEC 947-1:1988) GB/T 17619 Limits and methods of testing for immunity of electrical/electronic sub- assemblies in vehicles to electromagnetic radiation GB 18655 Limits and methods of measurement of radio disturbance characteristics for the protection of receivers used on board vehicles (GB 18655-2002, IDT IEC/CISPR 25:1995) GB/T 21437.2 Road vehicles - Electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only (GB/T 21437.2-2008, ISO 7637-2:2004, IDT) QC/T 413-2002 Basic technical conditions of automotive electrical equipment3 Terms and definitionsThe following terms and definitions apply to this standard. 3.1 Parking distance monitoring & warning device An auxiliary device, that can detect obstacles within the monitoring range when the parking speed does not exceed 0.5 m/s, send a warning signal to the driver, improve the safety of automobile parking. 3.2 Sensor It is an important component of the distance monitoring & warning device, which is used to transmit and/or receive obstacle detection signals. 3.3 Controller It is an important component of the distance monitoring & warning device, which is used to control the sensor to send signals, process the sensor received signals, make the indicator work. 3.4 Indicator It is an important component of the distance monitoring & warning device, which is used to send a warning signal to the driver. 3.5 Monitoring range A specific three-dimensional spatial range in the parking area. 3.6 Standard test tube White PVC tube used to simulate obstacles when testing the monitoring range, including vertical standard test tube and horizontal standard test tube. Vertical standard test tube refers to a white PVC tube which has a diameter of 75 mm and a length of 1000 mm placed vertically. Horizontal standard test tube refers to a white PVC tube which has a diameter of 75 mm and a length of 300 mm placed horizontally. 3.7 Maximum detectable distance The maximum distance of the vertical standard test tube within the monitoring range, that can be continuously detected within 2/3 of the vehicle width. 3.8 Reflective wall-shape object White PVC flat plate which has a length and width both greater than or equal to 1000 mm. 3.9 Self-test The process by which the controller performs self-test on the reliability of the detection function of the distance monitoring & warning device.4 Model compilation rulesThe model compilation method of the distance monitoring & warning device is as follows: the vehicle. 5.1.4.3 General warning range A specific spatial range in the rear or front area of the vehicle, which has a horizontal distance greater than 1000 mm and less than or equal to 1500 mm from the outer end of the vehicle. 5.1.4.4 Pre-warning range A specific spatial range in the rear or front area of the vehicle, which has a horizontal distance greater than 1500 mm from the outer end of the vehicle. 5.1.4.5 Monitoring range in front and rear of the vehicle A vehicle equipped with a distance monitoring & warning device shall have a monitoring range behind the vehicle; the monitoring range in front of the vehicle is optional. The rear monitoring range includes the impending collision range, the main warning range, the general warning range, the pre-warning range which is optional. The front monitoring range includes the impending collision range, the main warning range, the general warning range and the advance warning range which are optional. For the distance monitoring & warning device that only monitors the two corner areas of the vehicle's front monitoring range, its front monitoring range and corresponding functional requirements are determined by the automobile manufacturer and the product supplier through consultation. 5.1.5 Indication signal The distance monitoring & warning device must have an auditory indication; other indications are optional. For the distance monitoring & warning device with the vehicle's front monitoring range, the display and sound alarm frequencies for its front and rear monitoring ranges shall not be the same. 5.1.5.1 Auditory indication The alarm frequencies of the auditory indicator are selected from the following frequencies: 700 Hz, 800 Hz, 900 Hz. When an obstacle is detected within the pre-warning range, an alarm is issued at an intermittent frequency of about 1 Hz. When an obstacle is detected within the general warning range, an alarm is issued at an intermittent frequency of about 2 Hz. When an obstacle is detected within the main warning range, an alarm is issued at an intermittent frequency of about 4 Hz. When an obstacle is detected within the impending collision range, a continuous alarm sound is sounded. The requirements for other auditory indication methods shall be specified in the product technical specifications. 5.1.5.2 Other indications The visual indicator with color segment indication is specified as follows: When an obstacle is detected within the pre-warning range, the green light is intermittently lit. When an obstacle is detected within the general warning range, the green light is always on. When an obstacle is detected within the main warning range, the green light is always on and the yellow light is intermittently lit. When an obstacle is detected within the impending collision range, the green light and the yellow light are always on and the red light flashes continuously. The requirements for other indication methods other than color segment indication shall be specified in the product technical specifications. 5.2 Structure 5.2.1 Dimensions The external dimensions shall meet the requirements of the drawings. 5.2.2 Appearance The external surfaces of each component of the distance monitoring & warning device shall be smooth and flat; it shall not have defects such as dents, scratches, cracks, deformation, etc. The exposed metal parts shall have a firm anti-rust and anti-corrosion coating or paint layer on the surface; the metal parts shall not be rusted. 5.2.3 Materials The materials used for each component shall ensure that the distance monitoring & warning device has sufficient mechanical strength and service life. The degree of protection shall comply with the provisions of GB/T 4942.2-1993. When there are special requirements for the distance monitoring & warning device, it shall be specified in the product technical conditions. 5.4.2 Waterproof performance Parts that can be directly exposed to sunlight shall adopt the degree of protection of IPX5 for water spray test. The installation details and test status of the distance monitoring & warning device shall be specified in the product technical conditions. After the test, the distance monitoring & warning device shall meet the requirements specified in the product technical conditions. 5.4.3 Anti-foreign matter performance The degree of protection of the components that can be directly exposed to sunlight shall be IP6X for dust tightness test. The installation details and test status of the distance monitoring & warning device shall be specified in the product technical conditions. The conformity assessment of the distance monitoring & warning device after the anti-foreign matter test shall be carried out in accordance with the provisions of GB/T 4942.2-1993. 5.5 Abnormal power supply voltage resistance 5.5.1 Power supply polarity reverse connection resistance The distance monitoring & warning device shall be able to withstand a 1 min power supply polarity reverse connection test without damage. Reverse voltage value: 14 ± 0.2 V for 12 V power supply system; 28 V ± 0.2 V for 24 V power supply system. After the test, the distance monitoring & warning device shall meet the requirements specified in the product technical conditions. 5.5.2 Power supply overvoltage resistance The distance monitoring & warning device shall be able to withstand a certain value of power supply overvoltage test without damage. This standard only stipulates the 12 V power supply system. Its test voltage, test time, and qualification judgment are shown in Table 3. For other power supply systems, it shall be determined by the automobile manufacturer and product supplier through consultation.6 Test method6.1 Structural inspection 6.1.1 Appearance inspection 6.1.1.1 Dimensions The appearance dimensions of the distance monitoring & warning device are inspected with general or special measuring tools. 6.1.1.2 Appearance The appearance and markings are inspected by naked eye observation. 6.1.2 Materials Perform in accordance with the provisions of the product technical conditions. 6.2 Functional inspection 6.2.1 Test description 6.2.1.1 Wind speed does not exceed 5.4 m/s, temperature (23 ± 5) °C, relative air humidity (60 ± 25)%; there are no reflected waves and interference waves around. 6.2.1.2 If the load state of the vehicle is not indicated, the test is carried out according to the curb weight state. 6.2.2 Self-check function test The self-check function test method of the distance monitoring & warning device shall be specified in the product technical conditions. 6.2.3 Maximum detectable distance test Place the vertical standard test tube 200 mm above the ground; test its center point one by one on the grid points as shown in Figure 6. Taking the center line as the reference, the maximum distance at which the vertical standard test tubes at all grid points within the range of 1/3 on the left and right of the vehicle width are detected and the corresponding alarm sound is issued. Place the horizontal standard test tube horizontally within the monitoring range, to test its center point one by one at the grid points shown in Figures 3 and 4. If the horizontal standard test tube is not detected at a certain position, but the horizontal standard test tubes at the 100 mm positions to the left and right of this point (Figure 3) are detected and the corresponding alarm sounds, the horizontal standard test tube at this position is deemed to be detected. 6.2.6 Upper and lower cut-off height tests of the monitoring range 6.2.6.1 Upper cut-off height test Refer to 6.2.5 for the test method. Test at the upper cut-off height determined by the automobile manufacturer and product supplier at the grid points shown in Figure 3. 6.2.6.2 Lower cut-off height test The vehicle is fully loaded; spread gravel with a height of 30 mm ~ 50 mm within the monitoring range. The sensor-mounted component moves horizontally 200 mm ~ 500 mm within the monitoring range at a speed of 0.1 m/s; repeat 10 times. 6.2.7 Side cut-off monitoring range test A reflective wall-shape object is placed vertically, on a straight line at a certain distance from both sides of the vehicle width. The reflective wall-shape object shall be parallel to the side of the vehicle. The reflective wall-shape object is tested in a static and moving state. 6.2.8 Distinguishing between vertical standard test tube and wall test Place the center point of the vertical standard test tube at the following specified test point within the monitoring range; place a 1 m × 1 m reflective wall-shape object vertically at 0.2 m behind it. The reflective wall-shape object is symmetrical to the test point (Figure 7). 6.3 Protection performance test 6.3.1 Waterproof test Parts that can be directly exposed to sunlight shall be subjected to water spray protection test according to the corresponding provisions of IPX5 test method in GB/T 4942.2- 1993. 6.3.2 Anti-foreign matter test Parts that can be directly exposed to sunlight shall be subjected to dust tightness test, according to the corresponding provisions of the IP6X test method in GB/T 4942.2- 1993. 6.4 Abnormal power supply voltage resistance test 6.4.1 Power supply polarity reversal test All parts of the distance monitoring & warning device are wired normally; then the power supply polarity is reversed for 1 min at the reverse voltage value specified in Article 5.5.1. 6.4.2 Overvoltage test All parts of the distance monitoring & warning device are wired normally; the test voltage is applied on the voltage input terminal. The test voltage, test duration, qualification judgment are shown in Table 3. 6.5 Electromagnetic compatibility test 6.5.1 Electromagnetic interference immunity test 6.5.1.1 The electromagnetic radiation interference immunity test of the distance monitoring & warning device shall be carried out in accordance with the relevant provisions of GB/T 17619-1998; its specific measurement method shall be specified in the product technical conditions. 6.5.1.2 The interference caused by conduction and coupling shall be carried out in accordance with the relevant provisions of ISO 7637-2:2004. 6.5.2 Electromagnetic disturbance test The electromagnetic disturbance test of the distance monitoring & warning device shall be carried out in accordance with GB 18655 and meet the provisions of GB 18655. 6.6 Temperature resistance test It shall be carried out in accordance with the provisions of 4.10 in QC/T 413-2002. 6.7 Vibration resistance test The distance monitoring & warning device shall be fixed on the vibration test bench and tested in a non-working state. The severity level of the sweep frequency vibration test is shown in Table 4. 6.8 Salt spray resistance test It shall be placed in the same position as on the motor vehicle and tested with a new distance monitoring & warning device that has not undergone other tests. The test shall be carried out in accordance with the provisions of Test Ka: Salt spray test method in GB/T 2423.17-1993. 6.9 Temperature and humidity cycle resistance test It is carried out according to the provisions of 4.11 of QC/T 413-2002.7 Inspection rules7.1 Qualified documents and marks Each distance monitoring & warning device can be exit-factory after passing the inspection; it shall be accompanied by a product quality certificate or mark. 7.2 Inspection categories The inspection rules are divided into exit-factory inspection, type inspection, and acceptance inspection. 7.3 Exit-factory inspection 7.3.1 Exit-factory inspection items are carried out according to Table 5. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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