Laser reflection type triggering device
A trigger device and laser reflection technology, which is applied in measuring devices, instruments, impact tests, etc., can solve the problems of affecting light energy, product failure, trigger instability, etc., and achieve the effect of convenient use, easy calibration, and improved stability
Pending Publication Date: 2020-06-26
SHANGHAI MOTOR VEHICLE INSPECTION CERTIFICATION & TECH INNOVATION CENT CO LTD
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Problems solved by technology
The service life, cost and the particularity of the installation location make this method inconvenient in use; while the traditional through-beam photoelectric switch action trigger method
Calibration is required for each test, and the parallelism of the two mounting planes is often not easy to align
The focus does not meet the requirements, which affects the actual received light energy of the receiver
It directly causes the product not to work or not to be triggered; although the traditional laser reflection test trigger method solves the problem of alignment calibration, due to the introduction of the reflective surface, the photoelectric switch is triggered by misoperation caused by sunlight, flying birds, and vibrations, resulting in triggered instability
Method used
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[0033] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0035] It should be noted that the terminology used here is only for describing specific implementations, and is not intended...
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The invention relates to a laser reflection type triggering device. The laser reflection type triggering device comprises: a first laser transmitting and receiving device, wherein the first laser transmitting and receiving device comprises a first laser transmitting device and a first laser receiving device, the first laser transmitting device is used for transmitting first light waves with a first wavelength, and the first laser receiving device is used for receiving reflected waves of the first light waves; a second laser transmitting and receiving device, wherein the second laser transmitting and receiving device comprises a second laser transmitting device and a second laser receiving device, the second laser transmitting device is used for transmitting a second light wave with a second wavelength, and the second laser receiving device is used for receiving a reflected wave of the second light wave; a reflecting device, wherein the reflecting device is used for reflecting the firstlight wave and the second light wave, the first laser transmitting and receiving device and the second laser transmitting and receiving device are arranged at intervals, and the first wavelength is not equal to the second wavelength. The invention provides a laser reflection type triggering device which can improve the triggering stability of a photoelectric switch.
Description
technical field [0001] The invention relates to the technical field of large-span reflective high-precision photoelectric switches, in particular to a non-contact laser reflective trigger device suitable for automobile crash tests. Background technique [0002] There are three kinds of test triggers for the photoelectric switch of the collision in the traditional automobile test: the physical strip switch trigger strip (TapeSensor), the laser through-beam type, and the laser reflective type. [0003] In the physical strip switch strip approach, the strip switch strip becomes a one-time consumable and requires rewiring for each test. The service life, the cost and the particularity of the installation location make this method inconvenient in use; while the traditional through-beam photoelectric switch action trigger method. Calibration is required for each test, and the parallelism of the two mounting planes is often not easily aligned. The focus cannot meet the requiremen...
Claims
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Login to View More IPC IPC(8): H03K17/94G01M17/007G01M7/08
CPCH03K17/943G01M17/0078
Inventor 朱晓明吴斌赵汝涛
Owner SHANGHAI MOTOR VEHICLE INSPECTION CERTIFICATION & TECH INNOVATION CENT CO LTD