Channel detection method based on distance measuring sensor and device thereof, and gate machine
A technology of ranging sensor and channel detection, which is applied to measurement devices, optical device exploration, instruments, etc., can solve the problems of many control chip communication ports, large amount of cables, mutual interference, etc., and achieves structural cost and cable simplification. , Small performance requirements, the effect of improving adaptability
Pending Publication Date: 2021-10-08
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology
[0005] 1) Since each laser only covers a small area, the entire gate needs to be densely covered with a large number of transmitting modules or receiving modules, which is costly, has a large amount of cables, and is not easy to maintain
[0006] 2) Since it is difficult to achieve time-sharing synchronization between modules to isolate interference measures, and strict alignment between the transmitting module and the receiving module is required, otherwise false alarms will be higher due to insufficient light intensity reception, so a large number of modules are likely to cause mutual interference. false alarm
[0007] 3) Since the number of modules cannot be increased indefinitely, it is difficult to form a three-dimensional space sensing area, which is not conducive to the detection of pedestrians carrying luggage and children
[0008] 4) The data of a large number of modules is uploaded to the channel control board through the communication cable, the cable load is not easy to maintain and the line interferes, and there are many requirements for the communication port of the control chip and the processing is complicated
Method used
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[0073] In order to make the purpose, technical means and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.
[0074] The present application determines whether the detected target is stored in the channel by using whether the current measurement distance from the ranging sensor is within the corresponding effective measurement threshold of the ranging sensor. Since the distance measuring sensor does not require strict alignment between the transmitting module and the receiving module, the sensing module including multiple distance measuring sensors can be built into one side of the gates on both sides of the channel, which reduces the installation cost. Difficulty, and reduce the number of modules in the sensing module.
[0075] see figure 1 as shown, figure 1 It is a schematic flow chart of the channel detection method based on the ranging sensor in this application....
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The invention discloses a channel detection method based on a distance measuring sensor, and the method comprises the steps: determining an effective measurement threshold value corresponding to the distance measuring sensor at a sensing module side comprising at least one distance measuring sensor according to the information of the distance measuring sensor from which the current measurement distance is from, and if the current measurement distance is smaller than the effective measurement threshold value, determining that the detected target exists in the channel, wherein the induction module is located in a gate machine body on one side of gate machines on the two sides of the channel, an induction area formed by the induction module is distributed in a fan shape, and the radius of the fan shape is larger than the width of the channel. According to the invention, the circuit cost, the structure cost and the cable are greatly simplified, and the difficulty of gate installation and debugging is greatly reduced because alignment installation is not needed.
Description
technical field [0001] The invention relates to the field of channel detection of gates, in particular to a channel detection method based on a distance measuring sensor. Background technique [0002] With the development of technology, access gates have become popular in subway entrances and exits, high-speed rail entrances and exits, office buildings and community entrances and exits. It is usually a pedestrian passage formed by the space between two turnstiles; in open places, multiple sets of turnstiles are often used to form many passages, among which the middle turnstile forms left and right sides with the turnstiles on the left and right respectively. 2 channels. Under normal circumstances, after the personnel pass the authentication, the door wing of the gate opens; when the gate reaches the end of the passageway of the gate, the door wing closes automatically. However, in actual use, there will be situations such as pedestrians carrying luggage, leading children, ...
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Login to View More IPC IPC(8): G01V8/20G01S11/12
CPCG01V8/20G01S11/12
Inventor 李长水王升国赵先林
Owner HANGZHOU HIKVISION DIGITAL TECH