Plan to prevent shuttle buses from hitting people in the workshop. Help!
Thread Content
Requirements: The shuttle bus should pass by the entrance to the control room; barriers should be installed between the impact pillars and the equipment. These barriers should be able to be lifted manually when people need to pass through, but they should lock in place when the vehicle is passing by, thereby preventing people from entering the area where the vehicle is operating. Detailed layout diagram. (1) I am considering adding a fenced gate at the entrance, equipped with an electromagnetic lock. Photoelectric switches will be installed in the area where the shuttle bus passes; when the vehicle goes by, the electromagnetic lock is powered on and the fenced gate locks, preventing it from being raised. Once the vehicle has passed the entrance, the electromagnetic lock loses power and the gate can be opened again. (2) Are there any speed measurement devices that can be installed on the shuttle bus or at one end of its track, to measure its speed? When the speed of the shuttle bus is not zero, such a device should be able to generate a switch signal to lock the electromagnetic lock. Personally, I think the second option meets the requirements best. I’m not sure if this can be implemented; I would appreciate any advice from those who know more about this topic. Are there any other solutions? Please share your insights. I also want to ask the experts here: is there any such speed measurement device? What is its technical name? The price should be as low as possible, as the customer’s budget is limited. Thank you all, guys. Please give your advice: hug:
Hello, regarding the solutions to prevent shuttle carts from hitting people in the workshop, both of the ideas you proposed are feasible. Here are my suggestions: 1. Use a gate door equipped with an electromagnetic lock and a photoelectric switch; this solution is relatively easy to implement. Install a liftable barrier door at the entrance to the control room, equip the door with an electromagnetic lock, and set up photoelectric switches in the area where the shuttle vehicle operates. When the shuttle bus activates the photoelectric switch, the electromagnetic lock is powered on, locking the gate and preventing people from entering. After the vehicle passes by, the photoelectric switch returns to its untriggered state, the electromagnetic lock loses power, and the gate door can be raised. 2. Install a speed detector and use its output signal to control the electromagnetic lock: This approach requires the use of specialized speed measurement equipment. There are various speed detectors available on the market that can meet your needs, such as encoders, lidar, or wheel-based speed sensors; all of them can measure speed and generate corresponding signals. Based on your budget and the constraints of your installation environment, you can choose a suitable speed measurement device. When purchasing, you can look for keywords such as “speed sensor,” “vehicle speed detector,” or “encoder.” Since you mentioned that the client has a limited budget, it may be necessary to consider more affordable options. Ordinary encoders are relatively inexpensive, and they are also easy to install and maintain. You can contact the supplier to inquire about specific models and prices, in order to determine the product that best meets your budget and technical requirements. Based on your description and requirements, I am more inclined to recommend the first option. Because it not only provides basic security protection but also has a relatively low cost. Although the second option allows for precise monitoring of the speed changes of the shuttle bus, it may incur additional costs. If the budget is limited, the first option can be given priority, with further upgrades made in the future based on actual needs and available budget. .
Have you seen those parking lot lights that turn red when there’s a car and green when there isn’t? The signal is taken from here; for physical separation, barriers are used, while for logical separation, signal lights are employed. A simple solution is to use a door that closes automatically and opens outward, paint it red, and when someone opens the door, the vehicle will know. The institutionalized approach is that vehicles must stop at intersections; whether or not there is anyone around, they must come to a complete stop to ensure the intersection is safe.
There are many options that can be used to achieve this; you can even combine the barriers with the shuttle buses. As long as it’s within the area at the entrance, when the barriers open, the buses will stop for a certain period of time.
Refer to the service robots in hotels.
Use the first approach: after the photoelectric switch signal changes from present to absent, add a delay to restore interlocking.
Thank you: handshake