A sleep study system comprises a set of sensors for monitoring physiological parameters of a subject during sleep as part of a sleep study and for monitoring the sleep stage of the subject. It is determined if intervention to the subject is needed for maintenance or repair to the sleep study system. If so, a time to perform the intervention is also derived based on the sleep stage of the subject, in particular so as to be least disruptive to the subject.

A power indication circuit for indicating different power levels of a battery, can include: N LED indicators; N setting resistors; N multifunction ports; a drive circuit coupled to the N multifunction ports and the battery, and being configured to acquire N threshold voltage signals in accordance with voltages at the N multifunction ports during a first time period of an operation cycle, and to generate N comparison signals in accordance with the N threshold voltage signals and a voltage detection signal generated by detecting a voltage of the battery, in order to drive the N LED indicators in accordance with the N comparison signals during a second time period of the operation cycle; and where each of the N setting resistors coupled in parallel to a corresponding one of the N LED indicators is respectively coupled to a corresponding one of the N multifunction ports.

Methods and systems for communicating between autonomous vehicles are described herein. Such communication may be performed for signaling, collision avoidance, path coordination, and/or autonomous control. A computing device may receive data for the same road segment from autonomous vehicles, including (i) an indication of a location within the road segment, and (ii) an indication of a condition of the road segment. The computing device may generate, from the data for the same road segment, an overall indication of the condition of the road segment, which may include a recommendation to vehicles approaching the road segment. Additionally, the computing device may receive a request from a computing device within a vehicle approaching the road segment to display vehicle data. The overall indication for the road segment may then be displayed on a user interface of the computing device.

Techniques are described for monitoring and controlling fall protection equipment. For example, the techniques of this disclosure may be used to monitor the connection status of fall protection equipment, e.g., whether or not the fall protection equipment is connected to a support structure. The techniques described in the disclosure may determine whether the fall protection equipment is connected to a support structure based on changes in a resonant frequency of an electronic circuit of an inductive sensor within the fall protection equipment. The inductive sensor may be formed from sets of one or more coils, where a first set of one or more coils and a second set of one or more coils are wound in opposite directions.

Disclosed is a child safety system for a vehicle that can alert a driver of the vehicle about the presence of a child in the vehicle when the door of the vehicle is opened. The disclosed child safety system includes a plurality of weight sensor pads that can connect with different seats of the vehicle. The plurality of sensor pads can connect to a central unit through a splitter. The central unit includes an audio alarm, a light source, and a battery. The disclosed system further includes a magnetic door switch that can be installed on the driver's side door for detecting the opening of the door. The magnetic door switch can also be electrically connected to the central unit.

Systems and methods for enhanced collection of training data for machine learning to improve worksite safety and operations. One embodiment is a system with an interface to instruct a user device of a user to capture first sensor data of an object performing one or more known actions. The system also includes a training controller to allocate points as an award to the user of the user device for correctly capturing the object performing the one or more known actions, and to generate an instruction for the user to capture second sensor data of the object performing one or more unknown actions if the user has exceeded a threshold of awarded points. The training controller trains a machine learning function based on the second sensor data of the object performing the one or more unknown actions as identified by the user having exceeded the threshold of awarded points.

According to the present invention, a system for detecting an occupant left unattended in a vehicle, including a first detection unit that detects a situation in which a vehicle is stopped or parked; a carbon dioxide measurement unit that measures carbon dioxide concentration inside the vehicle; and a determination unit that detects the first detection unit's detection of the situation in which the vehicle is stopped or parked, and determines whether or not an occupant is left unattended in the vehicle based on the carbon dioxide concentration measured by the carbon dioxide measurement unit is disclosed.

The laser light safety guide to assist in guiding a prime mover utilize for snowplowing including a laser that can be mounted within a cab of the prime mover and oriented to emit a visible laser beam directed through a transparent structure the prime mover. The laser light safety guide further comprises a shielding structure opaque to the visible laser beam that is trimmable or adjustable to enclose a space extending from a portion of the laser from which the visible laser beam is emitted to the transparent structure the prime mover. The shielding structure mitigates or contains reflection of the visible laser beam from an interior surface of the transparent structure.

A visual warning assembly, configured to make a warning from one vehicle to another vehicle. The visual warning assembly has a case with a front face joined to a base and an antenna. A channel display window, a channel selector button, a power button, a green lighted button, a yellow lighted button and a red lighted button, arranged on the front face. A mounting ball is magnetically joined to the base. A microcontroller is electrically coupled to the green lighted button, the yellow lighted button, and the red lighted button. The microcontroller is programmed with instructions to: receive a communication from a second visual warning assembly. Then, engage one member of a lighted button set consisting of the red button, the yellow button, and the green button creating an indicating light. Finally, receiving a signal from a user making the indicating light an activated button.

A temperature-measuring device for detecting moving object trajectories is provided. The temperature-measuring device includes a signal control module, a temperature-sensing module and a motion detection module. The temperature-sensing module is electrically connected to the signal control module, for measuring a temperature of each of a plurality of moving objects in an object temperature-measuring range. The motion detection module is electrically connected to the signal control module, for capturing a motion trajectory of each of the moving objects in an object motion detection range. The object temperature-measuring range is smaller than or equal to the object motion detection range, and the object temperature-measuring range falls entirely within the object motion detection range. The temperature-sensing module can be configured to respectively measure the temperatures of the moving objects in the object temperature-measuring range according to the motion trajectories of the moving objects that are provided by the motion detection module.