CN113109060A - Test equipment and test method for electric pre-tightening safety belt - Google Patents
Test equipment and test method for electric pre-tightening safety belt Download PDFInfo
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- CN113109060A CN113109060A CN202110558774.6A CN202110558774A CN113109060A CN 113109060 A CN113109060 A CN 113109060A CN 202110558774 A CN202110558774 A CN 202110558774A CN 113109060 A CN113109060 A CN 113109060A
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- 238000012360 testing method Methods 0.000 title claims abstract description 93
- 238000010998 test method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
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- 238000004088 simulation Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40234—Local Interconnect Network LIN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
The invention discloses a test device for an electric pre-tightening safety belt, which comprises: the test bench, the seat and dummy model, the safety belt retractor, the control box, a plurality of tension sensors, data acquisition equipment and power supply equipment. The seat is installed on the test bench, and the dummy model is placed on the seat. The safety belt retractor with the electric pre-tightening module is installed on the test bed, the electric pre-tightening module operates the woven belt according to a preset mode, and the woven belt is stretched and fixed on the seat and bound with the dummy model. The control box is installed on the test bench and controls the action of the electric pre-tightening module. The plurality of tension sensors are arranged at different positions of the woven belt to collect the tension of the woven belt at different positions. The data acquisition equipment receives the tensions of different positions of the woven belt acquired by the tension sensor. And the power supply equipment supplies power to the safety belt retractor and the control box. The invention also discloses a test method of the electric pre-tightening safety belt, which uses the test equipment for testing.
Description
Technical Field
The invention relates to the field of automobile parts, in particular to the technical field of testing of automobile safety parts.
Background
The combination of a safety belt and an air bag is a core part of a passive safety part of an automobile. In case of collision accident, the combined protection mode of the safety belt and the air bag is as follows according to the designed ideal state: the safety belt is firstly tightened in time, and a person is firmly bound on the seat at the first moment of an accident. Then, the seat belt is appropriately relaxed when the peak of the impact force has passed or when the person has been protected by the airbag. Avoid the injury of the ribs of the human body caused by the overlarge tension.
However, in actual use, the ideal state is not necessarily realized. When the seat belt is normally used, the webbing of the seat belt only moderately binds the passenger on the seat, and does not bind the person on the seat, so that a certain slack space exists. When a collision accident occurs, a process is needed for tightening the safety belt, and at the moment of the accident, the safety belt can not be tightened in time due to overlarge tightening allowance, which is a possible situation that a passenger slips out from the lower part of the safety belt, or the passenger slides forwards for a long distance integrally and touches a popped air bag. In this case, the seatbelt fails to absorb a part of the impact force as designed, and the entire load is given to the airbag. Both of these conditions can result in serious injury to the occupant.
Crash tests have shown that even a properly installed seat belt has room for loosening. On the one hand, the thickness of the clothing of the passenger is limited, and in addition, the safety belt device has component tolerance or installation tolerance. This makes it impossible to completely eliminate the slack in the seat belt. To solve this problem, pretensioned harnesses have been proposed. The pretensioner is additionally arranged on the pretensioned safety belt and is connected to a vehicle controller, when the vehicle controller judges that collision is about to happen in advance, the pretensioner is started in advance, the pretensioner tightens the safety belt in advance, and therefore the passenger is tightly tied on the seat, and the looseness margin is eliminated through the mode of tightening in advance.
The pretensioner is generally driven by an electric, pneumatic, mechanical drive mode, etc., and the electric mode pretensioner is becoming the mainstream along with the development of an electric vehicle. Since the pretensioner is required to be inserted in advance in the operation mode of the pretensioned seat belt, and is not completely passive, it is necessary to test the operation condition of the pretensioner, and the test equipment and test means for electrically pretensioning the seat belt are lacked in the prior art.
Disclosure of Invention
The invention provides a means for testing an electric pre-tightening safety belt.
According to an embodiment of the present invention, there is provided a test apparatus for electrically pre-tightening a seat belt, including:
a test bed;
the seat is arranged on the test bed, and the dummy model is placed on the seat;
the safety belt retractor is installed on the test bench and provided with an electric pre-tightening module, the electric pre-tightening module operates a braid of the safety belt retractor according to a preset mode, and the braid is stretched and fixed on the seat and is bound with a dummy model;
the control box is arranged on the test bed and connected to the safety belt winder and controls the electric pre-tightening module to act;
the tension sensors are arranged at different positions of the woven tape and acquire the tension of the woven tape at different positions;
the data acquisition equipment is connected to the tension sensors and receives the tensions of different positions of the woven belt acquired by the tension sensors;
and the power supply equipment is connected to the safety belt retractor and the control box and supplies power to the safety belt retractor and the control box.
In one embodiment, the test rig includes a base, rollers mounted on a bottom of the base, and a mounting frame mounted on the base, with the seat, belt retractor and control box mounted on the mounting frame.
In one embodiment, the control box has five preset modes: the control box is provided with five switches, each switch corresponds to one of the five modes, when one switch is turned on, the control box is switched to the mode corresponding to the switch, and when one switch is turned on, the rest switches cannot be turned on.
In one embodiment, the control box communicates with the seat belt retractor through a CAN bus or a LIN bus, and the control box controls the electric pre-tightening module to operate the webbing according to the current preset mode.
In one embodiment, the plurality of tension sensors comprise a shoulder tension sensor and two waist tension sensors, the shoulder tension sensor is arranged on the woven belt above the shoulder of the dummy model and used for acquiring the tension of the woven belt at the shoulder position, and the two waist tension sensors are respectively arranged on the woven belts at two sides of the dummy model close to the waist and used for acquiring the tension of the woven belt at two sides of the waist position.
In one embodiment, the test equipment for electrically pre-tightening the safety belt further comprises an upper computer, the upper computer is communicated with data acquisition equipment, the data acquisition equipment sends tension at different positions of the mesh belt to the upper computer, and the upper computer processes and stores the tension data to generate a test document.
According to an embodiment of the present invention, a method for testing an electric pre-tightening safety belt is provided, where the method includes:
the method comprises the following steps of assembly, namely, mounting a seat, a safety belt retractor and a control box on a test bench, and connecting the safety belt retractor and the control box with power supply equipment;
a testing and debugging step, namely placing the dummy model on a seat, adjusting the position of the seat, stretching and fixing a woven belt on the seat and binding the dummy model, and installing a plurality of tension sensors at specified positions on the woven belt;
the method comprises the following steps of initializing equipment, wherein a plurality of tension sensors are connected with data acquisition equipment, the data acquisition equipment is connected with an upper computer, and the upper computer is connected with a control box and initializes the tension sensors, the data acquisition equipment, the control box and the upper computer;
the method comprises the following steps that in the testing step, an upper computer sends an instruction to a control box according to a preset testing process, the control box is switched to a specified mode, the control box controls a safety belt winder to act, a tension sensor collects tension at different positions of a woven belt in different modes and sends the tension to data acquisition equipment, the data acquisition equipment sends tension data to the upper computer, and the test is continuously executed until the testing process is finished;
and a data processing step, wherein the upper computer processes and stores the tension data sent by the data acquisition equipment to generate a test document.
In one embodiment, the safety belt retractor is provided with an electric pre-tightening module, the electric pre-tightening module operates the webbing of the safety belt retractor according to a preset mode, and the control box controls the electric pre-tightening module to act.
In one embodiment, the control box has five preset modes: the control box is provided with five switches, each switch corresponds to one of the five modes, when one switch is turned on, the control box is switched to the mode corresponding to the switch, and when one switch is turned on, the rest switches cannot be turned on.
The test equipment and the test method for the electric pre-tightening safety belt realize an embedded test technology based on a communication bus, establish the detection capability of a whole vehicle system for new functions and new products, and realize the test and quality inspection capability aiming at the electric pre-tightening function of the safety belt under the simulation of a whole vehicle environment.
Drawings
Fig. 1a and 1b disclose a block diagram of a test apparatus for electrically pretensioning a seat belt according to an embodiment of the present invention.
Fig. 2 discloses a flow chart of a test method for electrically pre-tightening a seat belt according to an embodiment of the invention.
Fig. 3 discloses a matching process between modules in a test method for electrically pre-tightening a seat belt according to an embodiment of the invention.
Detailed Description
Referring first to fig. 1a and 1b, fig. 1a and 1b disclose a block diagram of a test apparatus for electrically pre-tightening a seat belt according to an embodiment of the present invention from a different perspective. As shown in the drawing, the test equipment for electrically pre-tightening a safety belt comprises: a test rig 101, a seat 103 and dummy 104, a seat belt retractor 105 and webbing 151, a control box 106, a number of tension sensors, a data acquisition device 107 and a power supply device 102.
The test rig 101 includes a base 111, rollers 112, and a mounting frame 113. The roller 112 is installed at the bottom of the base 111, and the test stand 101 can be pushed to a desired position using the roller 112. A mounting frame 113 is installed on the base 111, and the mounting frame 113 may be lapped in various shapes as needed to fit the installation positions of the seat, the webbing retractor, and the control box. The seat 103, the webbing retractor 105, and the control box 106 are mounted on the mounting frame 113.
The seat 103 is mounted on the test rig 101, and more specifically, the seat 103 is mounted on a mounting frame 113 of the test rig 101. The dummy model 104 is placed on the seat 103. The seat 103 and dummy model 104 are adjusted to simulate the sitting position of a real cabin occupant to simulate a real test environment.
The belt retractor 105 is mounted on the test rig 101, and more specifically the belt retractor 105 is mounted on the mounting frame 113 of the test rig 101. The belt retractor 105 has an electric pre-tightening module which operates the webbing 151 of the belt retractor according to a preset pattern. In performing the test, the webbing 151 is stretched and fixed to the seat 103 and the dummy 104 is bound. The stretching and fixing manner of the webbing 151 simulates the manner of belt binding of a real cabin occupant.
The control box 106 is mounted on the test rig 101, and more specifically, the control box 106 is mounted on a mounting frame 113 of the test rig 101. The control box 106 is connected to the belt retractor and controls the actuation of the electric pre-tightening module. In one embodiment, the control box 106 has five preset modes: a full force pre-take-up mode, a half force pre-take-up mode, a webbing slack reduction mode, a webbing recovery assist mode, and a vibration warning mode. The control box 106 has five switches, each corresponding to one of the five modes, and when one switch is turned on, the control box 106 switches to the mode corresponding to the switch, and when one switch is turned on, the remaining switches cannot be turned on. The control box 106 can only be switched to one of the modes at a time, while the other mode cannot be performed simultaneously while the control box is in one of the modes, and the current mode must be exited before the control box can be changed to the other mode. The switch referred to herein may be a physical control switch, or may be a control symbol or control bit of software. The physical control switches are typically used for manual testing, and the control symbols or bits of the software are typically used for automatic testing of program control. In one embodiment, the control box 106 communicates with the belt retractor 105 via a CAN bus or a LIN bus, and the control box 106 controls an electric pre-tightening module in the belt retractor 105 to operate the webbing in a current preset mode.
Several tension sensors are installed at different positions of the webbing 151, and the tension sensors collect tension at different positions of the webbing 151. In the illustrated embodiment, the plurality of tension sensors includes one shoulder tension sensor 108 and two waist tension sensors 109. The shoulder tension sensor 108 is provided on the webbing 151 above the shoulder of the dummy model 104, and acquires the tension of the webbing at the shoulder position. Two waist tension sensors 109 are provided on the webbing 151 on both sides of the dummy model 104 near the waist, respectively, and collect the tension of the webbing at the waist positions on both sides.
The data acquisition device 107 is connected to three tension sensors. The data collecting device 107 receives the tension at different positions of the webbing 151 collected by the tension sensor.
The power supply device 102 is connected to the belt retractor and the control box and supplies power to the belt retractor and the control box.
In the illustrated embodiment, the test device for electrically pre-tightening a seat belt further comprises an upper computer 110. The upper computer 110 is in communication with the data acquisition equipment 107, the data acquisition equipment 107 sends the tension of different positions of the mesh belt 151 acquired by the three tension sensors to the upper computer 110, and the upper computer 110 processes and stores the tension data to generate a test document.
The invention also discloses a test method of the electric pre-tightening safety belt, which tests the performance of the electric pre-tightening safety belt by using the test equipment of the electric pre-tightening safety belt. Fig. 2 discloses a flow chart of a test method for electrically pre-tightening a seat belt according to an embodiment of the invention. As shown in fig. 2, the test method includes:
and S1, assembling the components. In the component assembling step S1, the seat, the webbing retractor, and the control box are mounted on the test stand, and the webbing retractor and the control box are connected to the power supply device.
And S2, testing and debugging. In the test and debug step S2, the dummy model is placed on the seat and the position of the seat is adjusted, the webbing is stretched and fixed on the seat and the dummy model is bound, and the plurality of tension sensors are attached to the specified positions on the webbing. Specifically, one shoulder tension sensor is provided on a webbing above a shoulder of the dummy model, tension at the shoulder position of the webbing is acquired, two waist tension sensors are provided on the webbing on both sides of the dummy model near the waist, and tension at the waist positions of the webbing on both sides is acquired.
And S3, initializing equipment. In the device initialization step S3, the plurality of tension sensors are connected to the data acquisition device, the data acquisition device is connected to the upper computer, and the upper computer is connected to the control box, so as to initialize the tension sensors, the data acquisition device, the control box, and the upper computer.
And S4, testing. In the test step S4, the upper computer sends an instruction to the control box according to a preset test process, the control box is switched to an appointed mode, the control box controls the action of the seat belt retractor, and the tension sensor collects the tensions at different positions of the webbing in different modes and sends the tensions to the data collection device. The test process may include various combinations of different modes, the host computer may send various instructions in sequence according to the test process, switch the control box to different modes, and the tension sensor collects the tensions at different positions of the braid in different modes. In one embodiment, the control box has five preset modes: a full force pre-take-up mode, a half force pre-take-up mode, a webbing slack reduction mode, a webbing recovery assist mode, and a vibration warning mode. The control box can only be switched to one of the modes at a time, while in one of the modes, the other mode cannot be performed simultaneously, and the current mode must be exited before the change to the other mode can be made. In one embodiment, the safety belt retractor is provided with an electric pre-tightening module, the electric pre-tightening module operates the webbing of the safety belt retractor according to a preset mode, and the control box controls the electric pre-tightening module to act. The control box is communicated with the safety belt winder through a CAN bus or an LIN bus, and controls an electric pre-tightening module in the safety belt winder to operate the woven belt according to a current preset mode. After the data acquisition equipment receives the tension acquired by the tension sensor, the data acquisition equipment sends the tension data to the upper computer, and the test is continuously executed until the test process is finished.
And S5, data processing. In the data processing step S5, the upper computer processes and stores the tension data sent by the data acquisition device, and generates a test document. The upper computer generates a tension curve chart or a data report according to the tension data, and then generates a complete test document by combining the test process.
Fig. 3 discloses a matching process between modules in a test method for electrically pre-tightening a seat belt according to an embodiment of the invention. Fig. 3 mainly reveals the mating process between three modules: electronic pretension module, control box and data acquisition module. The data acquisition module in fig. 3 includes components of a tension sensor, a data acquisition device and an upper computer, which collectively perform the function of data acquisition. Referring to fig. 3, the upper computer sends an initialization instruction, and the data acquisition device and the sensor in the data acquisition module are initialized. The upper computer starts to execute the test program, the test program sends out an activation instruction, and the control box is activated. And the control box sends a preset message after being activated, namely the preset message of the selected preset mode is sent, and the control box waits for the next activation instruction after the preset message is sent. The preset message is simultaneously sent to the electric pre-tightening module and the data acquisition module. The electric pre-tightening module takes a preset message as an excitation signal, starts after receiving the excitation signal, executes tightening action, and waits for the next pre-tightening message after executing the tightening action. And the data acquisition equipment in the data acquisition module carries out time marking after receiving the preset message. And a tension sensor in the data acquisition module acquires the tension of the woven belt after the electric pre-tightening module executes tightening action. The time stamp and the tension of the webbing are supplied to the data acquisition device together as the content of data acquisition. The data acquisition equipment provides the acquired time mark and the acquired tension data for the upper computer, the upper computer performs data processing to generate a graphic curve, and the tension sensor, the data acquisition equipment and the upper computer in the data acquisition module are in standby after the data processing is completed. And the test program continues to execute and sends out a next activating instruction, the process is repeated until the test program is executed, and the test process is finished.
The test equipment and the test method for the electric pre-tightening safety belt realize an embedded test technology based on a communication bus, establish the detection capability of a whole vehicle system for new functions and new products, and realize the test and quality inspection capability aiming at the electric pre-tightening function of the safety belt under the simulation of a whole vehicle environment.
It should also be noted that the above-mentioned embodiments are only specific embodiments of the present invention. It is apparent that the present invention is not limited to the above embodiments and similar changes or modifications can be easily made by those skilled in the art from the disclosure of the present invention and shall fall within the scope of the present invention. The embodiments described above are provided to enable persons skilled in the art to make or use the invention and that modifications or variations can be made to the embodiments described above by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of protection of the present invention is not limited by the embodiments described above but should be accorded the widest scope consistent with the innovative features set forth in the claims.
Claims (9)
1. A test apparatus for electrically pretensioning a safety belt, comprising:
a test bed;
the seat is arranged on the test bed, and the dummy model is placed on the seat;
the safety belt retractor is installed on the test bench and provided with an electric pre-tightening module, the electric pre-tightening module operates a braid of the safety belt retractor according to a preset mode, and the braid is stretched and fixed on the seat and is bound with a dummy model;
the control box is arranged on the test bed and connected to the safety belt winder and controls the electric pre-tightening module to act;
the tension sensors are arranged at different positions of the woven tape and acquire the tension of the woven tape at different positions;
the data acquisition equipment is connected to the tension sensors and receives the tensions of different positions of the woven belt acquired by the tension sensors;
and the power supply equipment is connected to the safety belt retractor and the control box and supplies power to the safety belt retractor and the control box.
2. The test apparatus for electrically pretensioning a seat belt according to claim 1, wherein the test bench comprises a base, rollers and a mounting frame, the rollers are mounted on the bottom of the base, the mounting frame is mounted on the base, and the seat, the belt retractor and the control box are mounted on the mounting frame.
3. The test apparatus for electrically pretensioning a seat belt according to claim 1, characterized in that the control box has five preset modes: the control box is provided with five switches, each switch corresponds to one of the five modes, when one switch is turned on, the control box is switched to the mode corresponding to the switch, and when one switch is turned on, the rest switches cannot be turned on.
4. The test equipment for electrically pretensioning a seat belt according to claim 3, wherein the control box communicates with the seat belt retractor through a CAN bus or a LIN bus, and the control box controls the electric pretensioning module to operate the webbing in accordance with a current preset mode.
5. The apparatus for testing an electric pre-tightening safety belt according to claim 1, wherein the plurality of tension sensors include a shoulder tension sensor provided on the webbing above the shoulder of the dummy model for acquiring tension of the webbing at the shoulder position, and two lap tension sensors provided on the webbing on both sides of the dummy model near the lap position for acquiring tension of the webbing at both side lap positions, respectively.
6. The test equipment for electrically pre-tightening a safety belt according to claim 1, further comprising an upper computer, wherein the upper computer is in communication with the data acquisition equipment, the data acquisition equipment sends tension at different positions of the mesh belt to the upper computer, and the upper computer processes and stores the tension data to generate a test document.
7. A test method of electrically pretensioned seatbelt using the test apparatus of electrically pretensioned seatbelt according to any one of claims 1 to 6, the test method comprising:
the method comprises the following steps of assembly, namely, mounting a seat, a safety belt retractor and a control box on a test bench, and connecting the safety belt retractor and the control box with power supply equipment;
a testing and debugging step, namely placing the dummy model on a seat, adjusting the position of the seat, stretching and fixing a woven belt on the seat and binding the dummy model, and installing a plurality of tension sensors at specified positions on the woven belt;
the method comprises the following steps of initializing equipment, wherein a plurality of tension sensors are connected with data acquisition equipment, the data acquisition equipment is connected with an upper computer, and the upper computer is connected with a control box and initializes the tension sensors, the data acquisition equipment, the control box and the upper computer;
the method comprises the following steps that in the testing step, an upper computer sends an instruction to a control box according to a preset testing process, the control box is switched to a specified mode, the control box controls a safety belt winder to act, a tension sensor collects tension at different positions of a woven belt in different modes and sends the tension to data acquisition equipment, the data acquisition equipment sends tension data to the upper computer, and the test is continuously executed until the testing process is finished;
and a data processing step, wherein the upper computer processes and stores the tension data sent by the data acquisition equipment to generate a test document.
8. The method for testing an electric pre-tightening safety belt according to claim 7, wherein the belt retractor has an electric pre-tightening module, the electric pre-tightening module operates the webbing of the belt retractor according to a preset pattern, and the control box controls the electric pre-tightening module to operate.
9. The method for testing an electric pretensioning seat belt according to claim 8, characterized in that the control box has five preset modes: the control box is provided with five switches, each switch corresponds to one of the five modes, when one switch is turned on, the control box is switched to the mode corresponding to the switch, and when one switch is turned on, the rest switches cannot be turned on.
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| CN202110558774.6A CN113109060A (en) | 2021-05-21 | 2021-05-21 | Test equipment and test method for electric pre-tightening safety belt |
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| CN202110558774.6A CN113109060A (en) | 2021-05-21 | 2021-05-21 | Test equipment and test method for electric pre-tightening safety belt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116399576A (en) * | 2023-06-05 | 2023-07-07 | 常州市骏牒电子科技有限公司 | Automobile safety belt buffering performance detection device capable of achieving speed regulation simulation |
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