A laser alarm device for teaching
An alarm device and laser technology, which is applied in the field of teaching aids, can solve the problems of complex structure of the alarm and difficulty in making it by hand, and achieve the effect of convenient hands-on production, convenient production and disassembly, and complex structure
Active Publication Date: 2019-11-05
北京火星人视野科技有限公司
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Problems solved by technology
[0003] In view of this, the embodiment of the present invention provides a laser alarm device for teaching, which can solve the problems of complex structure and difficult hands-on production of existing alarms, so that it can be used as a teaching kit to facilitate students' hands-on production and is suitable for teaching demonstrations
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[0030] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0031] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0032] see figure 1 , 2 As shown in and 3, a laser alarm device for teaching in an embodiment of the present invention includes a laser emitter 1 and an alarm 2, and the laser emitter 1 and the alarm 2 are separately arranged, and the laser emitter 1 includes: a housing 3 and an The laser rod 5, power supply 7 and switch 9 in the shell 3, the alarm 2 includes: the shell 4 and the power supply 6 installed in the shell 4, the circuit board 8, the receiving module 10 and the alarm module 12, the surface of the circuit ...
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The embodiment of the invention discloses a laser alarm device for teaching and relates to teaching demonstration tools. The problems that an existing laser alarm is complex in structure and difficult to manufacture can be solved. The laser alarm device comprises a laser emitter and an alarm unit which are arranged in a split mode. The laser emitter comprises a shell and a laser bar installed in the shell. The alarm unit comprises a shell, a power supply, a circuit board, a receiving module and an alarm module, wherein the power supply, the circuit board, the receiving module and the alarm module are installed in the shell; an installation slot is formed in the surface of the circuit board; the receiving module and the alarm module are each provided with a spigot matched with the installation slot; the receiving module and the alarm module are fixed to the circuit board in the mode that the spigots are inserted into the installation slot; the laser bar of the laser emitter aligns at the receiving module of the alarm unit; the receiving module is connected with the alarm module. The laser alarm device is suitable for the field of education and teaching.
Description
technical field [0001] The invention relates to a teaching aid, in particular to a laser alarm device for teaching. Background technique [0002] At present, there are various kinds of alarms on the market, which are mostly used in the anti-theft and industrial security fields of families and enterprises. Infrared rays, ultrasonic waves, and microwaves are generally used as the detection medium. Due to the optical characteristics of the detection medium, the emission angle is large and not concentrated. The disadvantage of being susceptible to interference causes the signal energy received by the receiving device to only account for a very small part of the radiated energy. Therefore, the receiving device requires high gain and strong anti-interference ability, which makes the structure complicated. In addition, the existing alarm The internal electronic components of the alarm are fixed on the circuit board by welding one by one, and the number of electronic components is l...
Claims
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IPC IPC(8): G08B13/183
CPCG08B13/183
Inventor 刘扬
Owner 北京火星人视野科技有限公司