Quick resistor connection device for crash test and data acquisition system

Abstract

The invention discloses a resistor quick connection device and a data acquisition system for a crash test, and belongs to the technical field of crash test devices. The resistor quick connection device comprises a generator terminal, two PINs and a resistor; the generator terminal is the same as a generator terminal corresponding to an air bag or a safety belt on the to-be-tested vehicle; the diameter of each PIN is matched with the size of a terminal cavity of the generator terminal, the contact ends of the two PINs are respectively inserted into the two terminal cavities of the generator terminal, and the two PINs are fixedly connected with the generator terminal; and the first end and the second end of the resistor are fixedly connected with the connecting ends of the two PINs respectively. In a collision test, when a resistor is needed to shield an air bag or a safety belt, a generator terminal of the air bag or the safety belt is pulled out from a wire harness terminal, the device is inserted into the wire harness terminal, then connection of the resistor can be rapidly completed, and the device is simple in structure, convenient to operate, capable of being repeatedly used and low in cost.

Description

Technical Field

[0001] The present invention relates to the technical field of collision test devices, and in particular to a resistance quick-connect device and a data acquisition system for collision tests. Background Art

[0002] The process of the whole vehicle collision test includes: when the vehicle collides, the front-end sensor detects the collision signal and sends it to the ECU (electronic control unit); the ECU combines the safety sensor signal to determine whether the collision intensity meets the standard; when the collision intensity meets the standard, it confirms that the airbags and seat belts need to be triggered; the ECU outputs current to the igniter of the airbag and seat belt that need to be triggered; the igniter detonates the gas generating agent, and the airbag inflates and pops out.

[0003] In a full vehicle collision test, different types of airbags and seat belts need to be detonated according to the test requirements of different test types, resulting in some airbags and seat belts that do not need to be detonated in some tests. The existing technology uses a method of connecting a resistor with the same resistance value to shield them, so that the airbags and seat belts that do not detonate can be used for the next test, which helps save parts costs and can also meet the electrical inspection report of the airbag controller.

[0004] However, in the prior art, the method of connecting a resistor is to first find the generator terminal of the airbag or seat belt, then cut the appropriate length of the wiring harness between the airbag body or seat belt body and its generator terminal, and then use wire strippers to break the skin to expose the copper wire. The two ends of the resistor are then wrapped around the wiring harness to complete the connection, and wrapped with tape to ensure insulation. First, this connection method has complicated steps, and it takes about 15 minutes to connect a resistor. Second, when the resistor shielding is required, the wiring harness is cut, and when the resistor shielding is not required, the original wiring harness needs to be restored. Since the wiring harness becomes shorter after cutting, it is necessary to connect a twisted pair of wires of appropriate length to extend it in order to complete the connection. Third, since the two ends of the resistor are tightly wrapped with the twisted pair of wires after use, disassembly will cause the resistor end to deform and break, avoiding a short circuit the next time it is used, resulting in the resistor being unable to be reused after disassembly. Summary of the Invention

[0005] To solve at least one aspect of the above problems, the present invention provides a resistance quick-connect device and a data acquisition system for collision testing.

[0006] In the first aspect, the present application provides a resistor quick-connect device for collision testing, comprising a generator terminal, two PIN pins and a resistor; the generator terminal is the same as the generator terminal corresponding to the airbag or seat belt on the vehicle to be tested; the diameter of the PIN pin matches the terminal cavity size of the generator terminal, and the contact ends of the two PIN pins are respectively inserted into the two terminal cavities of the generator terminal, and the two PIN pins are fixedly connected to the generator terminal; the first end and the second end of the resistor are respectively fixedly connected to the connection ends of the two PIN pins.

[0007] Preferably, it also includes two twisted pairs, a current signal acquisition sensor and a first signal line; the first ends of the two twisted pairs are fixedly connected to the first end and the second end of the resistor, respectively, and the second ends of the two twisted pairs are fixedly connected to the connection ends of the two PIN needles, respectively; the input end of the current signal acquisition sensor is sleeved on one of the twisted pairs, and the output end of the current signal acquisition sensor is fixedly connected to the input end of the first signal line.

[0008] Preferably, it also includes a first protective cover; the first protective cover is fixedly mounted on the outer surface of the resistor, and the first end of the first protective cover extends to the twisted pair connected to the first end of the resistor, and the second end of the first protective cover extends to the twisted pair connected to the second end of the resistor.

[0009] Preferably, two second protective covers are also included; one second protective cover is fixedly mounted on the connection between the twisted pair and the PIN needle on the first end side of the resistor, and the other second protective cover is fixedly mounted on the connection between the twisted pair and the PIN needle on the second end side of the resistor.

[0010] Preferably, the first protective sleeve and the second protective sleeve are both made of thermoplastic tubes.

[0011] Preferably, the resistance of the resistor is 1.7-2.5Ω.

[0012] Preferably, the length of the PIN needle is 15 to 30 mm.

[0013] Preferably, the two PIN pins are bonded to the generator terminals.

[0014] In a second aspect, the present application provides a data acquisition system for a collision test, comprising a current acquisition module and several resistance quick-connect devices for a collision test as described above, the number of resistance quick-connect devices being equal to the total number of airbags and seat belts on the vehicle to be tested, the generator terminals of the several resistance quick-connect devices being respectively the same as the generator terminals on the several airbags and several seat belts on the vehicle to be tested; each resistance quick-connect device includes a current signal acquisition sensor, and the first signal line output ends of the several resistance quick-connect devices are all connected to the current acquisition module.

[0015] Preferably, it also includes a second signal line and a junction box; the input end of the second signal line is connected to the output end of the junction box, the output end of the second signal line is connected to the current acquisition module, and the first signal line output ends of several resistance quick-connect devices are respectively connected to the jacks on the junction box.

[0016] The resistance quick-connect device and data acquisition system for collision testing of the present invention have the following beneficial effects:

[0017] (1) In a collision test, when it is necessary to connect a resistor to shield an airbag or seat belt, it is only necessary to unplug the generator terminal of the airbag or seat belt from the corresponding wiring harness terminal and plug the device of the present application having the same generator terminal as the generator terminal of the airbag or seat belt into the wiring harness terminal to complete the connection of the resistor. The operation is quick and the work efficiency is high. The time required for connecting a single resistor is only about 1 minute, and there is no need to destroy the structure of the wiring harness on the vehicle to be tested, thereby ensuring the accuracy of the test results.

[0018] (2) Since the resistor does not need to be disassembled each time the air bag or seat belt is replaced, the device of the present application can be reused, which helps to save testing costs. In addition, the device of the present application itself has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To better understand the above and other objects, features, advantages, and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. Like reference numerals in the accompanying drawings refer to like components. Those skilled in the art should understand that the accompanying drawings are intended to schematically illustrate preferred embodiments of the present invention and have no limiting effect on the scope of the present invention. The components in the drawings are not drawn to scale.

[0020] Figure 1 A schematic diagram showing the connection between the vehicle's wiring harness terminals and the airbag or seatbelt generator terminals;

[0021] Figure 2 A schematic structural diagram of a resistance quick-connect device for a collision test according to an embodiment of the present invention is shown;

[0022] Figure 3 A block diagram of a data acquisition system for a collision test according to an embodiment of the present invention is shown.

[0023] Description of reference numerals:

[0024] 1. Wire harness terminal; 2. Generator terminal; 3. PIN pin; 4. Resistor; 5. Twisted pair; 6. Current signal acquisition sensor; 7. First signal line; 8. First protective cover; 9. Second protective cover; 10. Current acquisition module; 11. Second signal line; 12. Junction box. DETAILED DESCRIPTION

[0025] The following description of exemplary embodiments of the present disclosure is made in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding. These details should be considered as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0026] As used herein, the term "including" and its variations represent open inclusion, i.e., "including but not limited to." Unless otherwise stated, the term "or" means "and / or." The term "based on" means "based at least in part on." The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "first," "second," etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0027] like Figure 1 As shown, A represents the airbag or seatbelt in the vehicle. Generator terminal 2 is fixedly connected to the airbag body or seatbelt body. A wiring harness inside the airbag body or seatbelt body is connected to generator terminal 2. Generator terminal 2 and wiring harness terminal 1 are snap-fitted. In the prior art, installing resistor 4 requires destroying the wiring harness inside the airbag body or seatbelt body to connect resistor 4, which is complex and costly.

[0028] In order to at least partially solve one or more of the above problems and other potential problems, the embodiments of the present disclosure provide a resistance quick-connect device for collision testing, such as Figure 2 As shown, it includes a generator terminal 2, two PIN pins 3 and a resistor 4.

[0029] Generator terminal 2 is identical to the generator terminal 2 corresponding to the airbag or seatbelt on the vehicle to be tested, allowing the generator terminal 2 in the device of the present application to be used in conjunction with the wiring harness terminal 1 corresponding to the airbag or seatbelt. PIN pin 3 is a standard component, and the diameter of PIN pin 3 matches the terminal cavity size of generator terminal 2. For example, the diameter of PIN pin 3 is 1 mm, and the length of PIN pin 3 is preferably 15 to 30 mm. The contact ends of two PIN pins 3 are respectively inserted into the two terminal cavities of generator terminal 2. Both PIN pins 3 are fixedly connected to generator terminal 2. Specifically, both PIN pins 3 are bonded to generator terminal 2. The resistance value of resistor 4 is preferably 1.7 to 2.5 Ω. The first and second ends of resistor 4 are respectively fixedly connected to the connection ends of the two PIN pins 3. For example, the first and second ends of resistor 4 are respectively welded to the connection ends of the two PIN pins 3 or fixedly connected by winding wires.

[0030] In a preferred embodiment, the device of the present application also includes two twisted pairs 5, a current signal acquisition sensor 6 and a first signal line 7; the first ends of the two twisted pairs 5 are fixedly connected to the first end and the second end of the resistor 4, respectively, and the second ends of the two twisted pairs 5 are fixedly connected to the connecting ends of the two PIN needles 3, respectively. Specifically, the first ends of the two twisted pairs 5 are welded to the first end and the second end of the resistor 4, respectively, and the second ends of the two twisted pairs 5 are welded to the connecting ends of the two PIN needles 3, respectively; the input end of the current signal acquisition sensor 6 is sleeved on one of the twisted pairs 5, and the output end of the current signal acquisition sensor 6 is fixedly connected to the input end of the first signal line 7. Specifically, the current signal acquisition sensor 6 adopts the M705AHSI model sensor produced by the KISTLER manufacturer. Preferably, the device of the present application further includes a first protective sleeve 8 and two second protective sleeves 9; the first protective sleeve 8 is fixedly mounted on the outer surface of the resistor 4, with a first end of the first protective sleeve 8 extending to the twisted pair 5 connected to the first end of the resistor 4, and a second end of the first protective sleeve 8 extending to the twisted pair 5 connected to the second end of the resistor 4; one of the second protective sleeves 9 is fixedly mounted on the connection between the twisted pair 5 and the PIN pin 3 located on the side of the first end of the resistor 4, and the other second protective sleeve 9 is fixedly mounted on the connection between the twisted pair 5 and the PIN pin 3 located on the side of the second end of the resistor 4. More preferably, the first protective sleeve 8 and the second protective sleeves 9 are both made of thermoplastic tubes, that is, the first protective sleeve 8 and the two second protective sleeves 9 are first mounted on the outer surface of the resistor 4 and on the connection between the second ends of the twisted pair 5 and the connection ends of the PIN pin 3, respectively, and then the first protective sleeve 8 and the two second protective sleeves 9 are fixed by heating.

[0031] This application also provides a data acquisition system for collision test, such as Figure 3 As shown, it includes a current acquisition module 10 and a plurality of resistance quick-connect devices for collision testing as described above, the number of resistance quick-connect devices is equal to the total number of airbags and seat belts on the vehicle to be tested, and the generator terminals 2 of the plurality of resistance quick-connect devices are respectively the same as the generator terminals 2 on the plurality of airbags and seat belts on the vehicle to be tested; each resistance quick-connect device includes a current signal acquisition sensor 6, and the output ends of the first signal lines 7 of the plurality of resistance quick-connect devices are all connected to the current acquisition module 10. Preferably, the system of the present application also includes a second signal line 11 and a junction box 12; the input end of the second signal line 11 is connected to the output end of the junction box 12, the output end of the second signal line 11 is connected to the current acquisition module 10, and the output ends of the first signal lines 7 of the plurality of resistance quick-connect devices are respectively connected to the jacks on the junction box 12.

[0032] While various embodiments of the present disclosure have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand this document.

Claims

1. A resistance quick-connect device for collision testing, characterized by: The device comprises a generator terminal (2), two PIN needles (3) and a resistor (4); the generator terminal (2) is identical to the generator terminal (2) corresponding to the airbag or safety belt on the vehicle to be tested; the diameter of the PIN needle (3) matches the size of the terminal cavity of the generator terminal (2); the contact ends of the two PIN needles (3) are respectively inserted into the two terminal cavities of the generator terminal (2); the two PIN needles (3) are fixedly connected to the generator terminal (2); and the first end and the second end of the resistor (4) are respectively fixedly connected to the connection ends of the two PIN needles (3).

2. A resistance quick-connect device for collision testing according to claim 1, characterized in that: It also includes two twisted pairs (5), a current signal acquisition sensor (6) and a first signal line (7); the first ends of the two twisted pairs (5) are fixedly connected to the first end and the second end of the resistor (4), respectively, and the second ends of the two twisted pairs (5) are fixedly connected to the connection ends of the two PIN needles (3), respectively; the input end of the current signal acquisition sensor (6) is sleeved on one of the twisted pairs (5), and the output end of the current signal acquisition sensor (6) is fixedly connected to the input end of the first signal line (7).

3. A resistance quick-connect device for collision testing according to claim 2, characterized in that: The invention also includes a first protective sleeve (8); the first protective sleeve (8) is fixedly mounted on the outer surface of the resistor (4), and a first end of the first protective sleeve (8) extends to the twisted pair (5) connected to the first end of the resistor (4), and a second end of the first protective sleeve (8) extends to the twisted pair (5) connected to the second end of the resistor (4).

4. A resistance quick-connect device for collision testing according to claim 3, characterized in that: It also includes two second protective sleeves (9); one of the second protective sleeves (9) is fixedly sleeved on the connection between the twisted pair (5) and the PIN needle (3) located on one side of the first end of the resistor (4), and the other second protective sleeve (9) is fixedly sleeved on the connection between the twisted pair (5) and the PIN needle (3) located on the second end of the resistor (4).

5. The resistance quick-connect device for collision testing according to claim 4, characterized in that: The first protective sleeve (8) and the second protective sleeve (9) are both made of thermoplastic tubes.

6. The resistance quick-connect device for collision testing according to claim 1, characterized in that: The resistance of the resistor (4) is 1.7-2.5Ω.

7. The resistance quick-connect device for collision testing according to claim 1, characterized in that: The length of the PIN needle (3) is 15 to 30 mm.

8. The resistance quick-connect device for collision testing according to claim 1, characterized in that: The two PIN needles (3) are bonded to the generator terminal (2).

9. A data acquisition system for a collision test, characterized in that: The invention comprises a current acquisition module (10) and a plurality of resistance quick-connect devices for collision testing as described in any one of claims 1 to 8, wherein the number of the resistance quick-connect devices is equal to the total number of airbags and safety belts on the vehicle to be tested, and the generator terminals (2) of the plurality of resistance quick-connect devices are respectively the same as the generator terminals (2) on the plurality of airbags and the plurality of safety belts on the vehicle to be tested; each resistance quick-connect device comprises a current signal acquisition sensor (6), and the output ends of the first signal lines (7) of the plurality of resistance quick-connect devices are all connected to the current acquisition module (10).

10. The data acquisition system for collision testing according to claim 9, characterized in that: It also includes a second signal line (11) and a junction box (12); the input end of the second signal line (11) is connected to the output end of the junction box (12), the output end of the second signal line (11) is connected to the current acquisition module (10), and the output ends of the first signal lines (7) of the plurality of resistance quick-connect devices are respectively connected to the jacks on the junction box (12).

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