Abstract: A sensor module may include a housing having a front end, a rear end opposing the front end, and first and second opposing sides extending between the front end and the rear end. The housing may define a first opening and a second opening spaced apart from the first opening on the front end. The sensor module may include an IMU sensor carried by the housing, a wireless transmitter carried by the housing, a battery power supply carried by the housing, and an IR ranging circuit configured to sense range information for a target and having an IR transmitter aligned with the first opening and configured to emit an IR pulse, and an IR photodetector aligned with the second opening and configured to detect a reflected IR pulse. The wireless transmitter may be configured to transmit the range information to a remote location.

Abstract: Sensors, devices, systems, devices, and methods for providing wireless modular self-contained units with battery power supply that can use radar, ultrasonic, and IR measuring techniques and sensors for directional detection of impeding objects, persons, or moving targets, and can be used with mobile smart phones and the like. The modular sensor units can be used as a displacement and motion measurement sensor for point of reference measurement applications. The displacement sensing method can use radar, ultrasonic, and IR measuring techniques for directional detection of impeding objects, persons, or moving targets. Upon the detection of the said target, algorithms make use of the direction, angle of ascent, and speed to provide real time position data represented in discrete format.