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QC/T 824-2019

Chinese Standard: 'QC/T 824-2019'
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QC/T 824-2019English259 Add to Cart Days<=3 Rotational speed sensor for automobile Valid QC/T 824-2019
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BASIC DATA
Standard ID QC/T 824-2019 (QC/T824-2019)
Description (Translated English) Rotational speed sensor for automobile
Sector / Industry Automobile & Vehicle Industry Standard (Recommended)
Classification of Chinese Standard T35
Word Count Estimation 13,132
Date of Issue 2019-08-02
Date of Implementation 2020-01-01
Older Standard (superseded by this standard) QC/T 824-2009
Regulation (derived from) Natural Resources Department Announcement No. 7 of 2019

QC/T 824-2019
Rotational speed sensor for automobile
ICS 43.040.10
T35
QC
People's Republic of China Automotive Industry Standard
Replace QC/T 824-2009
Speed sensor for automobile
2019-8-27 released
2020-1-1 implementation
Issued by the Ministry of Industry and Information Technology of the People's Republic of China
Preface
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is a revision of QC/T 824-2009.
Comparing this standard with QC/T 824-2009, the main differences are as follows.
--The scope of application of the standard has been broadened, wheel speed sensors and crankshaft speed sensors have been added, and the three sensors have been differentiated in many performance parameters.
-Added a chapter on terms and definitions.
--Because passenger cars and commercial vehicles have different requirements for sensor life and use environment, relevant parameters are given separately for each model.
--Add items such as conduction immunity and chemical resistance.
--Deleted the content of voltage influence, connection plug and so on.
--Many performance requirements have been adjusted and improved.
--Added appendix.
This standard was proposed and managed by the National Automotive Standardization Technical Committee (SAC/TC 114).
Drafting organizations of this standard. Hefei Bangli Electronics Co., Ltd., United Automotive Electronics Co., Ltd., Dongfeng Motor Electronics Co., Ltd.,
China Automotive Technology and Research Center Co., Ltd., Hamlin Electronics (Suzhou) Co., Ltd., Lu Bo Automotive Electronics (Qufu) Co., Ltd., Jiang
Suxin Tongda Electronic Technology Co., Ltd., Beijing Auto Electronics Testing Co., Ltd., China FAW Co., Ltd.,
National Auto Parts Product Quality Supervision and Inspection Center (Wuhu), Hengyi (Shanghai) New Energy Vehicle Technology Co., Ltd., Bosch Automotive
Parts (Suzhou) Co., Ltd., Continental Automotive Investment (Shanghai) Co., Ltd., Zhengzhou Yutong Bus Co., Ltd.
The main drafters of this standard. Fang Xibang, Ge Xuewei, Diao Weiran, Zhu Xiaoyu, Su Chengcheng, Xu Xiuxiang, Chu Guiting, Liu Jinlong, Chen Jun,
Zhao Xiuhong, Zhou Ge, Suo Jingkun, Deng Peng, Zhao Genbao, Ma Yutao, Liu Yunfan, Lu Changjun.
Speed sensor for automobile
1 Scope
This standard specifies the requirements, test methods, inspection rules, etc. of rotational speed sensors for automobiles.
This standard applies to crankshaft speed sensors, wheel speed sensors and gearbox speed sensors (hereinafter referred to as "sensors") for M, N, and O vehicles.
Other motor vehicles can refer to the implementation.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
QC/T 413-2002 Basic technical conditions for automotive electrical equipment
GB/T.19951 Test method for immunity of electrical/electronic components of road vehicles to electrostatic discharge
GB/T 21437.2 Electrical Disturbance Caused by Conduction and Coupling of Road Vehicles Second Standard. Electrical Transient Conduction Along Power Lines
GB/T 28046.2-2011 Road vehicle electrical and electronic equipment environmental conditions and test the second standard electrical load
GB/T 28046.3-2011 Road vehicle electrical and electronic equipment environmental conditions and test third standard mechanical load
GB/T 28046.4-2011 Road vehicle electrical and electronic equipment environmental conditions and tests No. 4 standard climate load
GB/T 28046.5 Environmental conditions and tests of electrical and electronic equipment for road vehicles-Part 5.Chemical load
GB/T 30038-2013 Road vehicle electrical and electronic equipment protection grade (IP code)
GB/T 33014.2 Test method for immunity of electrical/electronic components of road vehicles to narrow-band radiated electromagnetic energy Part 2.Anechoic chamber method
GB/T 33014.3 Test method for immunity of electrical/electronic components of road vehicles to narrow-band radiated electromagnetic energy. Part 3.Transverse electromagnetic wave (TEM) cell method
GB/T 33014.4 Test method for immunity of electrical/electronic components of road vehicles to narrowband radiated electromagnetic energy. Part 4.Large current injection (BCI) method
GB/T 33014.5 Test method for immunity of electrical/electronic components of road vehicles to narrow-band radiated electromagnetic energy. Part 5.Strip line method
3 Terms and definitions
This standard uses the following terms and definitions.
3.1
Rotational speed sensor
Sensors that measure the rotation speed of automobile engines, gearboxes, wheels, etc. and convert them into electrical signals. Usually includes crankshaft speed sensor,
Wheel speed sensor, gearbox speed sensor and turbine speed sensor.
3.2
Crankshaft speed sensor
A sensor installed on the engine to detect the speed and position of the crankshaft and output electrical signals.
Note 1.This standard defines the speed function, and the basic performance of the position function is shown in Appendix A.
3.3
Air gap
The distance between the sensor surface and the tooth tip of the signal wheel (as shown in Figure 1).
Figure 1 Schematic diagram of speed sensor
4 requirements
4.1 General requirements
The sensor shall meet the requirements of this standard and shall be manufactured in accordance with the drawings and design documents approved by the prescribed procedures.
The appearance of the sensor should be smooth, and the protective layer should be uniform, without obvious defects such as bubbles, spots, scratches and shedding.
4.2 Basic performance parameters
4.2.1 The basic performance parameters of Hall-type/magnetoresistive sensors are shown in Table 1.
4.2.2 Basic performance parameters of electromagnetic induction sensors
Under the conditions of 0.3-0.9mm working air gap and 22Hz working frequency, the peak-to-peak output voltage of the crankshaft speed sensor and wheel speed sensor
(Vpp) should not be less than 100mV.
4.3 Abnormal voltage resistance performance
4.3.1 Withstand reverse voltage
The sensor should be able to withstand the same reverse voltage test as the power supply voltage for a duration of 60s. After the test, it should meet the requirements of 4.2.
4.3.2 Withstand overvoltage
The sensor should be able to withstand an overvoltage test of 1.5 US and a duration of 60 minutes without damage. After the test, the product performance should meet the requirements of 4.2.
4.4 Insulation withstand voltage performance
The sensor should be able to withstand a test of 500V (effective value) for 1 min. After the test, it should meet the requirements of 4.2.
4.5 Temperature resistance
4.5.1 Low temperature storage performance
The sensor has undergone a storage test at a low temperature of -40°C for 24 hours. After 2 hours at room temperature, the performance should meet the requirements of 4.2.
4.5.2 High temperature storage performance
The sensor has undergone a storage test at a high temperature of 85°C for 48 hours, and after it has been restored at room temperature for 2 hours, its performance should meet the requirements of 4.2.
4.5.3 Resistance to rapid temperature changes
The crankshaft sensor has undergone a rapid temperature change test at a low temperature of -40°C and a high temperature of 125°C. After 2 hours of recovery at room temperature, the performance should meet the requirements of 4.2.
The wheel speed sensor has undergone a rapid temperature change test at a low temperature of -40°C and a high temperature of 150°C. After recovering at room temperature for 2 hours, the performance should meet the requirements of 4.2.
The transmission speed sensor has undergone a rapid temperature change test at a low temperature of -40°C and a high temperature of 125°C. After recovering at room temperature for 2 hours, the performance should meet the requirements of 4.2.
4.5.4 Low temperature resistance performance
When the sensor is subjected to the low temperature resistance test at -40℃, the performance should meet the requirements of 4.2.
4.5.5 High temperature performance
When the sensor is subjected to the high temperature performance test given in Table 2, the performance should meet the requirements of 4.2.
4.6 Humidity and heat cycle resistance
After the sensor is subjected to the damp heat cycle test, its performance should meet the requirements of 4.2.
4.7 Vibration resistance
The sensor should be subjected to a vibration test. After the test, the appearance should not be damaged, and the performance should meet the requirements of 4.2.
4.8 Protection performance
The protection level of the sensor (except the connector) should meet the requirements in Table 3.
4.9 Electromagnetic immunity performance (Hall type/magnetoresistive sensor)
4.9.1 The sensor shall comply with 4.2 during the electromagnetic radiation immunity test. The severity of the test is determined through negotiation between the supplier and the buyer.
4.9.2 Whether the sensor needs to conduct a conduction immunity test shall be determined by both parties through negotiation.
4.9.3 The sensor shall meet the requirements of 4.2 during the electrostatic discharge immunity test. The test severity level of air discharge and contact discharge shall be determined through negotiation between the supplier and the buyer.
4.10 Free fall resistance performance
The sensor is not allowed to be damaged after the free fall test, and the performance should meet the requirements of 4.2.
4.11 Chemical resistance
The performance of the sensor after the chemical test in Table 4 should comply with 4.2.
4.12 Durability
After the endurance test of Table 5, the sensor for commercial vehicles shall meet the requirements of 4.2.After the endurance test in Table 6, the sensors for passenger cars shall meet the requirements of 4.2.
5 Test method
5.1 Test conditions
5.1.1 Test environment
The tests should be carried out under the environmental conditions specified in Table 7 (except for special regulations).
5.1.2 Test voltage
The test voltage should be US±0.1V.
5.1.3 Test instrument
The voltmeter used in the test should not be less than 0.5.
5.1.4 Power supply equipment for test
The ripple coefficient of the DC power supply used in the test shall not exceed 0.1%.
5.2 Visual inspection
Use visual inspection method.
5.3 Basic performance test
The simulated real car is equipped with sensors on the special test bench according to the air gap range given in Table 1, and the test conditions are agreed upon between the supplier and the demander
Work down and measure the output signal with an oscilloscope and a multimeter.
The schematic diagram of the Hall type/magnetoresistive sensor test circuit is shown in Figure 2.
5.4 Abnormal voltage withstand test
5.4.1 Power reverse polarity test
According to the provisions of 4.7.2.3 in GB/T 28046.2-2011, the reverse voltage is US.
5.4.2 Power supply overvoltage test
According to the provisions of 4.3.1.1.2 or 4.3.2.2 in GB/T 28046.2-2011, the sensor test voltage is 1.5US.
5.5 Insulation withstand voltage test
According to the provisions of 4.11.2 in GB/T 28046.2-2011.
5.6 Temperature resistance performance test
5.6.1 Low temperature storage test
According to the provisions of 5.1.1.1.2 in GB/T 28046.4-2011.
5.6.2 High temperature storage test
According to the provisions of 5.1.2.1.2 in GB/T 28046.4-2011.
5.6.3 Rapid temperature resistance test
Perform 100 rapid temperature change tests in accordance with the provisions of 5.3.2 of GB/T 28046.4-2011.The low and high temperature holding time in each cycle is 30min.
5.6.4 Low temperature resistance performance test
According to the provisions of 5.1.1.2.2 in GB/T 28046.4-2011.The working mode 3.2 was changed to 3.1.
Note. If the performance test is carried out outside the low-temperature box, the sample should be taken out of the low-temperature box and completed within 5 minutes.
5.6.5 High temperature performance test
According to the provisions of 5.1.2.2.2 in GB/T 28046.4-2011.The working mode 3.2 was changed to 3.1.
Note. If the performance test is carried out outside the high temperature box, the sample should be taken out of the high temperature box and completed within 5 minutes.
5.7 Humidity and heat resistance cycle performance test
According to GB/T 28046.4-2011, 5.6.2.3, 10 cycles of temperature/humidity combined cycles are carried out between -10℃~65℃
Ring test. The working mode 3.2 is changed to 3.1 or negotiated with the customer.
5.8 Vibration performance test
Fix the sensor to simulate the actual vehicle installation method. The passenger car sensor is performed according to Table 8, and the commercial vehicle sensor is performed according to Table 9.
5.9 Protection performance test
Carry out according to GB/T 30038-2013 Table 7.
5.10 Electromagnetic immunity test
5.10.1 Electromagnetic radiation immunity
The supplier and the demander shall negotiate according to one or more of the combined methods in GB/T 33014 Part 2~5.During the test, for sensing
The signal generating device for the analog speed controller should be in a stable working condition.
5.10.2 Conducted immunity
According to the provisions of GB/T 21437.2.During the test, the signal generating device that provides the sensor with the simulated speed should be in a stable working state.
The selected test pulse and test level are negotiated by the supplier and the buyer.
5.10.3 Electrostatic discharge immunity
According to the provisions of GB/T.19951.
5.11 Free drop resistance test
According to the provisions of GB/T 28046.3-2011 4.3.
5.12 Chemical resistance test
According to the provisions of GB/T 28046.5.
5.13 Durability test
Divide the samples into two groups and carry out the following tests respectively (Hall type/magnetoresistive sensors need to be carried out in a charged state).
1) High temperature durability. in accordance with the provisions of 5.1.2.2 in GB/T 28046.4-2011 and the test conditions in Table 5 or Table 6.Which working mode
3.2 is changed to 3.1.
2) Temperature alternating durability. According to the requirements of 5.3.2.2 in GB/T 28046.4-2011 and the test conditions in Table 5 or Table 6.
6 Inspection rules
6.1 Qualified documents and marking
The sensor can only leave the factory after passing the inspection, and the product quality certificate and mark are attached.
6.2 Factory inspection
The factory inspection items include sensor appearance and basic performance.
6.3 Type inspection
6.3.1 Several situations for type inspection
In one of the following situations, type test the sensor.
a) Trial type qualification of new sensors;
b) After the formal production, if the structure, material, and process have a large change that affects the performance of the sensor;
c) Sensors produced in batches or in large quantities, no less than once every two years;
d) When the sensor has stopped production for more than one year and resumed production;
e) When there is a big difference between the factory inspection result and the last type inspection result.
f) When the national quality supervision agency requests for type inspection.
Note. The electromagnetic immunity test is only applicable to a) and b) (when the circuit is changed).
6.3.2 Sampling and grouping
The samples for type inspection shall be taken from the same batch of samples that have passed the factory inspection, and the number shall not be less than 12.According to the factory inspection items first
Perform re-inspection, and divide the samples into 4 groups after passing the re-inspection. Experiment with the following groups and project sequence.
6.3.3 Qualified judgment
The type inspection items of the sensor shall all meet the specified requirements. If one item is unqualified, a doubled number of samples can be taken again.
Re-check the unqualified items. If there are still unqualified items, the batch of samples shall be judged as unqualified. However, if the durability test is unqualified, no re-sampling should be made.
If taken, it is directly judged as unqualified.
7 Marking, packaging, storage and custody
The marking, packaging, storage and custody of the sensor should be implemented in accordance with the provisions of Chapter 6 of QC/T 413-2002.
Related standard:   QC/T 414-2016  QC/T 501-2015
Related PDF sample:   QC/T 828-2010  QC/T 823-2009
   
 
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