Tamper sensor
A technology of anti-demolition sensors and ring magnets, applied in the field of sensors, can solve the problems of difficult control of signal sensitivity of anti-theft alarm sensors, inconvenient fixing and installation, and complicated operation
Inactive Publication Date: 2011-08-10
保定学峰实业有限公司 +1
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The disadvantage of existing anti-theft alarm sensors for outdoor equipment is that it is not easy to fix and install, especially when installing on some in-use equipment, it is often necessary to change the original structure of the equipment, the operation is very complicated, and it is easy to be damaged or dismantled by criminals
In addition, the signal sensitivity of the anti-theft alarm sensor of the existing outdoor equipment is not easy to control, and it is difficult to obtain satisfactory results
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] see figure 1 After the device is installed, all important parts are protected by the outer cover 4, only the lead wire 7 is exposed, and after being combined with the anti-shear circuit, criminals cannot destroy it. The device is installed on the surface of the exposed steel part of the outdoor equipment 10, and is fixed by magnetic force.
[0014] After the device is installed, although the larger diameter part of the T-shaped soft iron column 3 is subjected to the downward attraction of the ring magnet 1, because the length of the smaller diameter part of its lower part is greater than the thickness of the ring magnet 1, it is affected by the outdoor equipment 10. support, the larger diameter of the T-shaped soft iron column 3 upper parts can not be lapped on the metal sheet 2.
[0015] see figure 2 , when the device was taken off from the outdoor equipment, the T-shaped soft iron column 3 was attracted by the ring magnet 1 and moved down, and the larger diameter o...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a tamper sensor for improving the reliability of a theftproof device, comprising an outer cover, an annular magnet and a T-shaped soft iron prop, wherein the annular magnet is blocked on an outer cover port and fixedly connected with the outer cover; the T-shaped soft iron prop is divided into a core column part with smaller diameter and a core cap part with larger diameter; the core column part is positioned in a center hole of the annular magnet; the length of the core column is more than the thickness of the annular magnet; the diameter of the core column is less than the diameter of the center hole of the annular magnet; the diameter of the core cap part is more than that of the center hole of the annular magnet; a coaxial annular metal sheet is arranged on theupper surface of the annular magnet; and the annular metal sheet and the T-shaped soft iron prop are respectively provided with leads for outputting signals. The invention not only has convenient installation, but also is not easy to damage or dismantle and greatly improves the sensitivity and the reliability of the theftproof device.
Description
technical field [0001] The invention relates to a sensor used in an anti-theft alarm device for outdoor equipment, belonging to the technical field of alarm. Background technique [0002] Installing an anti-theft alarm device is an effective measure to prevent outdoor equipment from being stolen. At present, the sensors used in anti-theft alarm devices for outdoor equipment are generally mercury switches or vibration switches. When the outdoor equipment is moved by criminals, the mercury switch or vibration switch is triggered, and the alarm device connected to it will send an alarm signal to the staff. . The disadvantage of existing anti-theft alarm sensors for outdoor equipment is that it is not easy to fix and install, especially when installing on some in-use equipment, it is often necessary to change the original structure of the equipment, the operation is very complicated, and it is easy to be damaged or dismantled by criminals . In addition, the signal sensitivity...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G08B13/02
Inventor 郭亚彬郭英顺
Owner 保定学峰实业有限公司