What is the role of infrared sensors logic for turnstile?
Infrared sensor is a sensor and a photoelectric switch of turnstile gate, the scientific name is a photoelectric sensor. Generally cylindrical, there are two types of direct reflection and diffuse reflection. According to the working principle, it is divided into PNP type and NPN type. People who are familiar with diodes should be familiar with its principle. No matter which one is used, there is not much difference in actual use. It mainly depends on the technical route chosen by turnstiles manufacturers and the corresponding control board interface.
Since it is a sensor, certainly it is to feel and perceive the outside world. As infrared sensors of swing gate or flap barrier, the main function is to let turnstile gate know the situation in the passage, which is equivalent to the eyes of turnstile gate. Let's talk about how he "sees".
The applications of turnstiles are multitudinous and complex. At train station, there are crowds of people, old, young, sick, and disabled, all with their families. In schools, teenagers playing on balance bikes, beauties dragging their luggage back to the dormitory, elementary school students carrying schoolbags, playing and running towards each other. The junior high school students in the classroom. In the community, the aunt who came back from buying vegetables in the vegetable market. The child who just learned to ride a bicycle, and the pregnant woman with a big belly. These pedestrians may be the characters in the turnstile gate passage. Faced with such a complicated passing situation, the turnstiles naturally need to know in order to make accurate judgments and allow the turnstile flaps to perform corresponding actions.
Generally speaking, as you know the main function of infrared sensors for turnstile is to prevent pinching, that is to prevent people from being pinched, which is also the core and most fundamental function for turnstiles. But in the face of the above-mentioned situations just now, it is actually not enough to be able to prevent pinching. Moreover, how is anti-pinch function in practical application? Is it possible to cover the passage of the corresponding application site? Wait, it's all worth elaborating on.
For example, ticket checking at a train station, a passenger is about to pass through the turnstile gate after scanning his ticket and another passenger is close to his body and wants to pass. Then the infrared sensors will receive a signal to turnstile access control board and it will be blocked. Otherwise, someone will evade the fare. At this time, the infrared sensor will play a role in preventing tailgating.
An old man in the community walked through the turnstile tremblingly with a walking stick. Due to the inconvenience of movement, it may take half a minute to walk a distance of less than 2 meters. Not to mention that the "three legs" cannot make the infrared recognition sensor recognize "two people" to be accurately perceived. At this time, the role of the infrared sensor is to "anti-pinch" and "anti-tailgating", but it cannot recognize the "third leg" as someone else.
For another example, at the ticket checking turnstile gate of the scenic spot, a tour guide brings a group over. Sometimes it is necessary to swipe the tickets in the hands of the tour guide to let the whole team pass, and sometimes the tour guide swipe the corresponding number of cards on the gates continuously to let the team pass. At this time, infrared sensors also has the function of “counter”.
In addition to the above scenarios, infrared sensors also plays the role of anti-retrograde, anti-submarine, anti-overturn, detention alarm functions and so on. Behind this is the logic that turnstile gate manufacturers need to consider when facing complex and changeable traffic scenarios. As a manufacturer of turnstile gates, we don’t have much more advantages in system integration, but the infrared sensors and traffic logic of turnstiles are the foundation of our company. With a responsible attitude, it is not too much to update and iterate this logic.
The simplest one which can be said to have infrared sensor logic on the market must have three pairs of infrared sensors and two independent interfaces. That is one interface for anti-pinch infrared sensors, one interface for entrance and exit infrared sensors. Some better manufacturers will make three pairs of infrared, three independent interfaces. Only professional turnstiles manufacturers will make multiple pairs of infrared sensors and multiple pairs of independent interfaces. Certainly, there are also unscrupulous merchants whom do not use infrared sensors for swing gates. But rely on delayed opening and closing of turnstiles. Please pay attention to distinguishing this point when make choice.
Turboo Universe Technology Co., Ltd. has established a professional turnstile laboratory, which can conduct comprehensive and detailed research on electronic access control, machine core, and housing. The research of the laboratory covers general logic programming, drive control programming, electronic access control & transmission structure integration and coordination, industrial aesthetic design, ergonomics, sheet metal structure design, integration of new materials and emerging technologies, scene simulation, weather resistance research and many other projects. For the programming of infrared sensor logic, nearly 40 versions have been updated and iterated in the past two decades. In the process of continuous update and exploration, we provide customers with the optimal gate logic solution so that customers can use it with peace of mind and use it with confidence.
Post time: Dec-01-2022