Proximity warning system and collision avoidance system

Abstract

To provide a proximity warning system that is less susceptible to noise generated from the power source of mobile equipment. [Solution] This proximity warning system detects the proximity of at least two mobile devices 1A and 1B and outputs a proximity warning. Each mobile device 1A and 1B is equipped with a master unit and a slave unit capable of UWB communication. The master unit includes a UWB communication unit, an alarm unit and a control unit. The control unit acquires information regarding the distance between the mobile devices 1A and 1B obtained through UWB communication between the master unit of the mobile device 1A equipped with the control unit and the slave unit of the other mobile device 1B, and outputs a proximity warning from the alarm unit when the distance is less than or equal to a predetermined value.

Claims

1. A proximity warning system that detects the proximity of at least two mobile devices and outputs a proximity warning, Each mobile device is equipped with a master unit and a slave unit capable of UWB communication. The master unit includes a UWB communication unit, an alarm unit, and a control unit. The control unit acquires information regarding the distance between mobile devices obtained through UWB communication between the master unit of the mobile device equipped with the control unit and the slave unit of another mobile device, and outputs a proximity warning from the alarm unit when the distance is less than or equal to a predetermined value, thus forming a proximity warning system.

2. The proximity warning system according to claim 1, wherein the master unit and the slave unit in each of the aforementioned mobile devices are housed in a single box.

3. At least one of the aforementioned mobile devices is a mobile device that is moved by the operator's control. The proximity warning system according to claim 1, wherein at least one of the UWB communication unit, alarm unit, and control unit of the master unit and the slave unit of the mobile device is attached to the operator.

4. The proximity warning system according to any one of claims 1 to 3, wherein a worker performing work within the range of movement of each of the aforementioned mobile devices is fitted with a slave unit that is capable of UWB communication with the master unit provided on each of the aforementioned mobile devices.

5. A collision avoidance system that detects the proximity of at least two mobile devices and avoids collisions between them, Each mobile device is equipped with a master unit and a slave unit capable of UWB communication. The master unit includes a UWB communication unit and a control unit, A collision avoidance system comprising: a control unit which obtains information regarding the distance between mobile devices obtained through UWB communication between a master unit of a mobile device equipped with the control unit and a slave unit of another mobile device, and which issues a command to stop the mobile device equipped with the control unit or a command to change the direction of travel of the mobile device equipped with the control unit when the distance is less than or equal to a predetermined value.

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