Analysis of characteristics of human activity monitor
1. Overview Source: far Extension Technology Author: Shi Xinhua human activity monitors, also known as non-contact proximity sensor, is the ideal electronic switch sensor. When the metal detection body approaches the sensing area of ​​the sensor, the switch can be contactless, without pressure, without sparks, and quickly send out electrical commands to accurately reflect the position and stroke of the motion mechanism. Even if it is used for general stroke control, its positioning accuracy and operation Frequency, service life, ease of installation and adjustment, and ability to adapt to harsh environments are incomparable to general mechanical limit switches. It is widely used in machine tools, metallurgy, corridor lighting, chemical industry, textile and printing industries. It can be used as limit, count, positioning control and automatic protection in the automatic control system. The proximity sensor has the characteristics of long service life, reliable operation, high repeat positioning accuracy, no mechanical wear, no sparks, no noise, and strong vibration resistance. So far, the range of applications of proximity sensors has become increasingly widespread, and its own development and innovation has been extremely rapid.
Human activity monitor has been gradually recognized and applied as a technical defense method. In order to better implement the national standard of GB / T10488-1997 human activity monitor and implement it smoothly, so that more people understand the principles and applications of human proximity sensors, now we introduce the human body proximity sensors developed and produced by Nanjing Yuantuo Technology. Basic knowledge of proximity sensor principles and applications.
Application of human activity monitor in ATM cash machine monitoring:
Let's analyze the method of video triggering. Many manufacturers now use "motion detection" as a typical method of triggering alarm recording. Then let's briefly analyze that most of the installation positions of ATMs are facing the street. The flow of people and the traffic are uncertain, so the motion detection is almost ineffective here, causing a lot of invalid garbage video files. The consequence is that there are a lot of garbage videos, it is difficult to find, and the hard disk is not used for a long time. Stop working to accelerate its damage,
Let's take an ATM outlet with a good transaction volume as an example. Taking 200 transactions per day per outlet as an example. As can be seen from the above data, the percentage of invalid video files is very high through motion detection as a method of recording trigger Huge, it is very inconvenient to watch the required video. On the contrary, triggering the video through the human activity monitor almost eliminates the generation of invalid video files. It is very convenient for future video viewing and forensics.
Dvr video recorder special microwave sensor, human activity monitor with switch bright signal can be set, detection sensitivity and distance can be adjusted, alarm time and distance can be set, detection direction can be adjusted, penetration performance is good. The output period can be set from 2 seconds to 180 seconds. 1. Non-contact detection; 2. Not affected by temperature, humidity, noise, airflow, dust, light, etc., suitable for harsh environments; 3. Strong resistance to radio frequency interference
ATM Dvr recorder dedicated human activity monitor, a control device used to detect the proximity of human body, can accurately detect the proximity of nearby people, is currently the best choice as an alarm and status detection. The sensing part has a high detection sensitivity to the movement of accessory characters, and it also suppresses the sound signal of the surrounding environment. It has a strong ability to engage in interference. It can be widely used in anti-theft devices such as ATM and insurance. It is easy to install and can be horizontal. Or install vertically. The sensitivity to human body induction is continuously adjustable, which makes the human body proximity sensor suitable for many different occasions.
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