Measuring device for contact time of dummy head and headrest in whiplash injury test

A technology of contact time and whiplash, which is applied to the measurement of electrical unknown time intervals, devices and instruments for measuring time intervals, etc., can solve the problems of not measuring the contact time between the head of the dummy and the headrest, and achieve reliable performance , low cost effect

Active Publication Date: 2014-11-19
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, equipment manufacturers do not have special equipment for measuring the contact time between the head of the dummy and the headrest.

Method used

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  • Measuring device for contact time of dummy head and headrest in whiplash injury test
  • Measuring device for contact time of dummy head and headrest in whiplash injury test
  • Measuring device for contact time of dummy head and headrest in whiplash injury test

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Experimental program
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Embodiment Construction

[0013] specific implementation plan

[0014] The measuring device is mainly composed of Wheatstone bridge, bridge arm parallel resistance, conductive material and so on. Through the contact and separation of the conductive material pasted on the head of the dummy and the conductive material pasted on the seat headrest, the resistance of the bridge arm of the Wheatstone bridge is connected and disconnected in parallel to realize a step change in the resistance of the bridge arm, thereby realizing the output The voltage signal jumps at the moment of contact and separation, and the crash test data acquisition equipment connected to it records the contact and separation moments of the dummy head and the seat headrest. The contact time measuring device is universal to the crash test data collection equipment.

[0015] Below in conjunction with accompanying drawing, structure of the present invention is further described in detail:

[0016] see figure 1 , the device for m...

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PUM

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Abstract

The invention discloses a measuring device for the contact time of a dummy head and a headrest, wherein the measuring device is commonly used in crash test data acquisition equipment and is simple in structure and high in reliability. The measuring device comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a conductive material 1, a conductive material 2 and connecting wires between the elements, wherein the resistor R1, the resistor R2, the resistor R3 and the resistor R4 form a Wheatstone bridge and are equal in resistance value, the resistor R5 is used for changing the resistance value of a bridge arm, and the conductive material 1 and the conductive material 2 play roles of switches. The measuring device is used for the automobile crash test data acquisition equipment commonly.

Description

technical field [0001] The invention belongs to the field of automobile test and detection, and in particular relates to a device for measuring the contact time between the head of a whiplash test dummy and a headrest. Background technique [0002] In the field of automobile safety technology, more and more attention has been paid to the protection of the necks of drivers and occupants by the front seats. The 2012 edition of C-NCAP includes the whiplash test score in the scope of investigation. The start time and end time of contact between the head of the dummy and the headrest of the seat are important data for calculating the neck injury value of the dummy. At present, equipment manufacturers do not have special equipment for measuring the contact time between the head of the dummy and the headrest. [0003] Contents of the invention [0004] The purpose of the present invention is to provide a device for measuring the contact time between the head of a dummy and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04F10/00
Inventor 张雷许艾刘文举管丽华胡冬梅
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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