CN203193795U

CN203193795U - Monitoring circuit based on vibration sensor

Info

Publication number: CN203193795U
Application number: CN 201320221288
Authority: CN
Inventors: 田来; 赵骏; 张涛; 李彦彰; 杨成艳; 谢辉
Original assignee: Tianjin Erjian Water & Electrical Installation Engineering Ltd
Current assignee: Tianjin Erjian Water & Electrical Installation Engineering Ltd
Priority date: 2013-04-11
Filing date: 2013-04-11
Publication date: 2013-09-11
Anticipated expiration: 2023-04-11

Abstract

The utility model discloses a monitoring circuit comprising a single-chip microcomputer control chip, a low-frequency vibration sensor, a camera, and a hard disk. The single-chip microcomputer receives signals from the vibration sensor, switches on the camera for recording, and compares and stores the video images. When no significant change is detected in 100 continuous images, monitoring is continued, and image comparison is continued, but the video image is not stored in the hard disk. When significant change is detected in the video images, the images are stored in the hard disk again. When no significant change is detected in more than 1000 continuous video images, the camera is turned off. The circuit provided by the utility model is energy-saving and environment-friendly. Unnecessary wasting of hard disk space can be avoided. The sensor has the advantages of low cost and high sensitivity. The circuit is easy to control, and is easy to realize. The circuit can be widely popularized in construction industries.

Description

A kind of supervisory circuit based on vibrating sensor

Technical field

The utility model relates to the safe protection of building site field, especially a kind of security monitoring circuit based on vibrating sensor.

Background technology

Along with the ripe and development of network technology, whether easily the intellectuality of building is also progressively selected the office space and is weighed living environment key factor for becoming people.People live in the Ground Connection in Intelligent Building, exchange message data fast not only, can also utilize this intelligentized network platform, make up based on network video monitoring system, the security personnel can monitor site environment inside and outside the building at any time by computer, the owner also can monitor the room of oneself, the camera of present video monitoring system is in open mode always, and the image of taking all is stored in the middle of the hard disk, monitor for routine safety, a large amount of nonsensical pictures have expended the hard-disc storage space, cause unnecessary waste, and when having access in the hard disk video monitoring image, to in a large amount of images, search out significant information and also need a large amount of time and efforts, so need find now a kind ofly both can ensure effective monitoring, again the intelligent video monitoring mode that can well save the hard-disc storage space and conveniently have access to.

Summary of the invention

In order to solve above-mentioned technical barrier, the utility model provides a kind of security monitoring circuit based on vibrating sensor.

The utility model solves the problems referred to above by following technical proposals

This circuit comprises singlechip control chip, low-frequency shock transducer, camera, hard disk.

An above low-frequency shock transducer and a camera are installed by each place, monitoring point, and low-frequency shock transducer is installed on ground, monitoring point, and camera is installed near the monitoring point; Singlechip control chip is electrically connected with an above low-frequency shock transducer at least, and singlechip control chip is electrically connected with an above camera at least, and singlechip control chip is electrically connected with hard disk.

In the time of near people or vehicle arrival monitoring point, vibrating sensor can perceive earth shock, and single-chip microcomputer receives the signal of vibrating sensor, opens camera and takes, and video image is compared and stores.When 100 width of cloth images of continuous detecting all do not have significant change, continue monitoring and movement images, but video image is not stored in the hard disk, if find that video image has significant change again, restart image is stored in the hard disk.When the continuous detecting video image surpasses when constant substantially more than 1,000 width of cloth, namely close camera.

Vibrating sensor adopts low-frequency shock transducer, and the maximum detection displacement is 1mm, can perception the steps of human and various animals, and the center of gravity variation that causes of the variation of body gesture and the slight vibration on the ground that causes.

The cam lens angle is more than 60 °, and the monitoring distance is more than 20 meters.

The unlatching of Single-chip Controlling camera and the storage of video image are adopted in the design of this device, when vibration signal transmits, photographic images is the detected image signal then, when continuous 100 width of cloth of picture image are constant substantially, think to remain static, not store video images, when picture is constant substantially above 1,000 width of cloth continuously, close camera, up to the arrival of next vibration signal, can well avoid the unnecessary waste of hard drive space like this; And the user can find significant signal when having access to video image rapidly; It is lower, highly sensitive that transducer detects cost, and circuit control is simple, is easy to realize, is applicable to the large-scale promotion of building trade.

Description of drawings

Fig. 1 is the hardware block diagram of embodiment;

Fig. 2 is the single-chip microcomputer workflow diagram of embodiment;

Fig. 3 is vibrating sensor and the scheme of installation of camera in the monitoring of corridor;

Fig. 4 is vibrating sensor and the scheme of installation of camera in square meter rooms 100;

Moving signal, 2. low-frequency shock transducer, 3. singlechip control chip, 4. camera, 5. hard disk, 6. supervisory control comuter of 1. Chun among the figure

Embodiment:

Tell about specific embodiments below in conjunction with accompanying drawing and example.

Present embodiment is in 2 monitoring points of per 100 square meter space mounting, and each monitoring point includes a plurality of vibrating sensors and a camera.

As shown in Figure 1, vibrating sensor adopts the KH4600 low-frequency shock transducer of KEHO, its frequency response can reach 0.5～100Hz, sensitivity is 8V/mm ± 5%, vibration signal below the 0.5Hz also there is response, the maximum detection displacement is 1mm, in order to prevent the influence of civil power, signal to 50Hz and 60Hz carries out filtering, abundant, the powerful chip TMS320F28335 that possesses the DSP function of stable performance of singlechip control chip employing peripheral hardware, LQFP is adopted in its encapsulation, and this chip has the high speed processing ability of 150MHz, can be used for image and handles.Start the shooting of camera behind the vibration signal of this chip receiving sensor, image shows at display in real time, and the storage of control chart image signal in hard disk.

As shown in Figure 2, whether the monitoring vibration signal reaches threshold value after the single-chip microcomputer initialization, then open the camera photographic images when reaching threshold value, then these images are compared, whether continuous 100 width of cloth have no significant change to detect the video image of taking, if not, then continue photographic images and image is deposited in the hard disk, if, then continue photographic images but image is not deposited in the middle of the hard disk, continue to detect the image of taking, judge image whether continuous 1,000 constant, if not, then continue photographic images, and memory image, if, then close camera, stop to take, and continue to monitor whether the vibration signal that reaches threshold value is arranged.

Be the vibrating sensor of corridor supervisory control system and the installation vertical view of camera as Fig. 3.Four vibrating sensors are installed on the subsurface of both sides, corridor uniformly as shown in the figure, and camera is installed on top.

Be that area is the arrangement situation of monitoring point in the square meter rooms 100 as Fig. 4.Camera adopts the S430H of triumphant acute hearing, and angle lens is 75.7 °, and indoor monitoring distance can reach 35m, and in order to satisfy the overall monitor in whole room, two cameras are installed on top corners place, room respectively, and vibrating sensor evenly distributes.

Above-described embodiment is illustrative principle of the present utility model and effect only; and the embodiment of part; for the person of ordinary skill of the art; under the prerequisite that does not break away from the utility model creation design; can also make some distortion and improvement, these all belong to protection range of the present utility model.

Claims

1. supervisory circuit based on vibrating sensor, it is characterized in that: this circuit comprises singlechip control chip, low-frequency shock transducer, camera, hard disk; Singlechip control chip is electrically connected with an above low-frequency shock transducer at least, and singlechip control chip is electrically connected with an above camera at least, and singlechip control chip is electrically connected with hard disk.

2. a kind of supervisory circuit based on vibrating sensor according to claim 1, it is characterized in that: an above low-frequency shock transducer and a camera are installed by each place, monitoring point, low-frequency shock transducer is installed on ground, monitoring point, and camera is installed near the monitoring point.