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245results about "Burglar alarm by pressure" patented technology

Pressure-sensitive type fiber sensing device for perimeter security protection

The invention discloses a pressure-sensitive type fiber sensing device for perimeter security protection. The device comprises at least a fiber bending sensing element which is arranged under a pavement flat plate and is buried in a soil layer. Each fiber bending sensing element comprises a signal fiber. At least one end of an optical cable is connected with a test unit. The test unit is connected with a processing unit. The processing unit is connected with alarm equipment and a camera. The fiber bending sensing element comprises a guide rod and a housing which is in sliding fit with the guide rod. The guide rod is in contact connection with one end of a curved support. The other end of the curved support is fixed on an inner wall of the housing. When extraneous force generates displacement to the pavement flat plate, displacement of the pavement flat plate further enables bending curvature of the signal fiber to change, an optical signal transmitted in the signal fiber changes with the above change, the change of the optical signal can be monitored through the test unit and is transmitted to the processing unit, and the processing unit starts the alarm equipment and the camera. According to the device, an intrusion behavior of an intruder can be effectively monitored.
Owner:XIAN JINHE OPTICAL TECH

Anti-pet tread type alarm and method thereof for simultaneously measuring areas of a plurality of areas

The invention relates to an anti-pet tread type alarm and a method thereof for simultaneously measuring areas of a plurality of areas. And the invention includes two parts: an anti-pet tread type alarm and a method thereof for simultaneously measuring areas of a plurality of areas. The method is embodied by a program of distinguishing a foot type by measuring areas of a plurality of areas. And the anti-pet tread type alarm is composed of a rectangle framework, a battery pack, an on-chip microcomputer system, a serial-in-parallel-out circuit, a parallel-in-serial-out circuit and a music circuit; an upper part and a bottom of the rectangle framework are respectively provided with a column electrode group and a row electrode group; and leads of the column electrode group are respectively connected to all parallel input terminals of the parallel-in-serial-out circuit in order as well as leads of the row electrode group are respectively connected to all parallel input terminals of the serial-in-parallel-out circuit in order. Moreover, a two dimensional coordinate system is established according to the leads of the column electrode group and the row electrode group; with utilization of the one-chip microcomputer, treaded areas are scanned and detected; contours of the treaded areas are tracked; areas in all contours are signed by ordinal numbers; calculation on areas by counting cells is carried out on areas in the contours; a foot type is determined; and it is decided whether an alarm sound is emitted or not. The method for measuring an area is completed and is suitable for one-chip microcomputers with all types.
Owner:CHONGQING TECH & BUSINESS UNIV

Pet trample-preventing alarming device and method for classifying foot shapes by measuring length of area

The invention relates to a pet trample-preventing alarming device and a method for classifying foot shapes by measuring a length of an area, which comprises the pet trample-preventing alarming device part and the method part for classifying the foot shapes by measuring the length of the area. The method is reflected on a program for classifying the foot shapes by measuring the length of the area. The alarming device consists of a rectangular framework, a battery pack, a single chip system, a serial-in parallel-out circuit, a parallel-in serial-in circuit and a music circuit, wherein the upper part and the bottom part of the rectangular framework are respectively provided with rows of electrode groups, and conducting wires of the electrode groups are sequentially connected to each parallel input end of the parallel-in serial-in circuit and each parallel output end of the serial-in parallel-out circuit. The program establishes a two-dimensional coordinate system according to array of the conducting wires of the two electrode groups, an area which is pedaled is scanned and detected by a single chip, an outline of the area is traced, a distance between every two outline points is calculated, the maximal distance between two outline points is stored and is adopted as the length of the area, the foot shape is judged, and the alarm is judged whether to issue. The pet trample-preventing alarming device is suitable for the antitheft alarming work.
Owner:CHONGQING TECH & BUSINESS UNIV

Anti-pet tread type alarm and method thereof for distinguishing foot type by measuring area with contour method

The invention relates to an anti-pet tread type alarm and a method thereof for distinguishing a foot type by measuring an area with a contour method. And the invention includes two parts: an anti-pet tread type alarm and a method thereof for distinguishing a foot type by measuring an area with a contour method. The method is embodied by a program of distinguishing a foot type by measuring an areawith a contour method. And the anti-pet tread type alarm is composed of a rectangle framework, a battery pack, an on-chip microcomputer system, a serial-in-parallel-out circuit, a parallel-in-serial-out circuit and a music circuit; an upper part and a bottom of the rectangle framework are respectively provided with a column electrode group and a row electrode group; and leads of the column electrode group are respectively connected to all parallel input terminals of the parallel-in-serial-out circuit in order as well as leads of the row electrode group are respectively connected to all parallel input terminals of the serial-in-parallel-out circuit in order. Moreover, a two dimensional coordinate system is established according to the leads of the column electrode group and the row electrode group; with utilization of the one-chip microcomputer, treaded areas are scanned and detected; contours of the treaded areas are tracked one by one; calculation on areas by counting cells is carried out on areas in the contours; a foot type is determined; and it is decided whether an alarm sound is emitted or not. According to the invention, the method for measuring an area is aimed at application to a treaded area that has been divided into blocks; and the method is also suitable for anti-theft and alarming work.
Owner:CHONGQING TECH & BUSINESS UNIV
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