Induction doorbell with enhanced sensitivity
A technology for sensing doorbells and sensitivity, applied in the direction of electromagnetic audible signals, etc., can solve the problems of high cost, low sensitivity, complex structure of vibration sensors, etc., and achieve the effects of excellent performance, improved sensitivity and low price
Inactive Publication Date: 2016-12-07
SHANGHAI JURAN INTELLIGENT TECH
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Problems solved by technology
Existing vibration sensors have the following problems, high-sensitivity vibration sensors have complex structures and high costs
Those with low sensitivity often cannot meet the needs of signal acquisition
Method used
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[0142] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific diagrams.
[0143] refer to figure 1 , the induction doorbell with enhanced sensitivity includes a single-chip microcomputer system 1, and also includes a vibration sensor 4, and the vibration sensor 4 is connected to a signal input end of the single-chip microcomputer system 1; the single-chip microcomputer system 1 is also provided with a signal output end, and the signal output end is connected to the sound system; The sensor 4 adopts an inertial pressure-enhanced vibration sensor, and the inertial pressure-enhanced vibration sensor includes a piezoelectric ceramic sheet 11. The piezoelectric ceramic sheet 11 includes a metal substrate 9, and the metal substrate 9 is provided with a piezoelectric ceramic dielectric material layer. The electric ceramic dielect...
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The invention relates to the electrical field and more specifically relates to the field of doorbells. The induction doorbell with enhanced sensitivity comprises a single-chip microcomputer system, and a vibration sensor which is connected to a signal input end of the single-chip microcomputer system. The single-chip microcomputer system also is provided with a signal output end which is connected to a sound system. The vibration sensor is an inertia pressure enhanced vibration sensor which comprises a piezoelectric ceramics sheet which comprises a metal substrate. The metal substrate is provided with a piezoelectric ceramics medium material layer which is covered by a conductive electrode layer. A solid inertia load with the mass which is larger than 0.1g and is smaller than 18g is fixed on the conductive electrode layer. The inertia pressure enhanced vibration sensor has the characteristics of excellent performance, a low price, a small thickness and easy installation. Under the premise of ensuring a low cost, the improvement of the sensitivity of the induction doorbell with enhanced sensitivity is helped.
Description
technical field [0001] The invention relates to the field of electronics, in particular to the field of doorbells. Background technique [0002] Because the installation position of doorbell is difficult for finding or people's habit problem, most people still knock on the door with hand. With the development of sound insulation technology, the sound insulation effect of the door is getting better and better. If you knock on the door with your hands, the owner in the room may not be able to hear it. The existing vibration sensors have the following problems, the vibration sensor with high sensitivity has complex structure and high cost. Those with low sensitivity often cannot meet the needs of signal acquisition. Contents of the invention [0003] The object of the present invention is to provide an induction doorbell with enhanced sensitivity to solve the above technical problems. [0004] The object of the present invention is to provide an inertial pressure enhanced ...
Claims
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IPC IPC(8): G08B3/10
CPCG08B3/10
Inventor 李兴文孙倩倩
Owner SHANGHAI JURAN INTELLIGENT TECH