A disconnection detection circuit includes: a pull-up resistor to which the detection signal is fed and which connects a signal line connected to the wiring cable to a power supply or a pull-down resistor which connects the signal line to a GND; and a voltage clip circuit 105 which includes a high-voltage clip circuit which is connected between the signal line and the power supply and which clips the voltage of the signal line to the maximum specified voltage and a low-voltage clip circuit which is connected between the signal line and the GND and which clips the voltage of the signal line to the minimum specified voltage.

Technologies for reducing vehicle door collisions include an in-vehicle compute device configured to determine a proximity between a door of a vehicle and a structure while the door is being opened and activate a door collision avoidance system of the vehicle to slow or restrict the opening of the door in response to a determination that the proximity of the door to the structure is within a proximity threshold. The door collision avoidance system may include one or more electro-magnets, one or more actuators, and/or one or more electro-active polymer devices. The in-vehicle compute device may also control the operation of the door based on a context of the vehicle.

A sport-boot pressure monitoring system and method of use. The system includes a left boot sensor having a left flexible fluid-containing bladder shaped to fit between a user's left leg and an interior surface of a left boot worn by the user and a left pressure sense element in pressure-sensing communication with the left flexible fluid-containing bladder, a right boot sensor that is similar to the left one, and a controller to provide a pressure alert if pressure between one of the user's legs and the interior surface of the boot worn on that leg violates a predetermined pressure threshold and to provide a proximity alert if a distance between the left and right boots violates a predetermined proximity threshold.

A system for monitoring pressure within a volume defined by a wall has a housing and a manometer coupled to the housing having fluid therein. The manometer is coupled to the volume and has a fluid level corresponding to a pressure within the volume. A pressure sensor is coupled to the housing and is coupled to volume. The pressure sensor generates a pressure signal corresponding to the pressure within the volume. A controller is coupled to the pressure sensor and is programmed to compare the pressure signal to a threshold and programmed to generate an indicator based on comparing.

A measurement device includes: a casing that includes a first air duct with an air inlet; a straightening grid; a first chamber; an opening plate including an opening; a second chamber; pressure sensors configured to measure a first pressure, a second pressure, and a third pressure, the first pressure being air pressure from the air inlet to the straightening grid, the second pressure being air pressure in the first chamber, the third pressure being air pressure in the second chamber; a specific opening configured to allow the opening plate to be replaceable; an open/close portion configured to open and close the specific opening; and a duct forming a second air duct between the measurement device and a measurement target.

Embodiments of this application relate to the field of power source control technologies, and disclose a control system and a charging and discharging control system. The control system includes a control circuit and an intermediate computer, where the control circuit includes a pressure sensor, a piezoelectric valve, and a controller; the pressure sensor is configured to collect pressure information; the controller is configured to receive the pressure information collected by the pressure sensor and transmit the pressure information to an intermediate computer; the intermediate computer is configured to transmit the pressure information to an upper computer, receive a preset pressure value generated by the upper computer based on the pressure information, and transmit the preset pressure value to the controller; and the controller is further configured to control the piezoelectric valve based on the preset pressure value.

A self-contained well water system is designed to be interposed between an external well pump and a plumbing system of a building. The system requires an installer or building owner to make only three basic connections for fully-functional operation: a single water inlet connection from the well pump to the well water system, a single water outlet connection from the well water system to a main input line of the building plumbing system, and a single power connection to provide electrical power to the electrical components of the system, and may also distribute power out to the well pump. The remaining components and the connections therebetween are configured and factory-assembled for maximum performance and efficiency.

A sensor package is provided. The sensor package includes, but not limited to: a mounting adaptor defining a housing and a port channel connecting with the housing; a sensor assembly positioned in the housing and including a sensing element to sense an ambient environment; a potting material deposited within the housing to encapsulate the sensor assembly; and a locking mechanism positioned in the port channel and configured to clip with the mounting adaptor to prevent seepage of the potting material.

A pressure monitor for vehicle tire inflation includes a hollow hand-held portion, a pressure digital indicator, an airflow control valve sleeve, a quick fit interface, an inflation hose, a valve core joint assembly and an air relief valve, wherein the hollow hand-held portion has a top end threaded with the pressure digital indicator and a bottom end provided with a dual end threaded part, a lower portion of the dual end threaded part is threadably provided with the airflow control valve sleeve, an end of the airflow control valve sleeve is provided with the quick fit interface, the inflation hose is hermetically connected and provided at one side of a top portion of the hollow hand-held portion, an end of the inflation hose is provided with a quick connect threaded part, and the valve core joint assembly is provided at an end of the quick connect threaded part.

A pressure differential indicator that eliminates the risk of providing a false positive due to fluid contamination. The invention has an electrically insulated barrier between the hot pin and the grounded housing without the need for a hermetic seal. The indicator can be manufactured at a greater efficiency and lower cost than is found with prior art pressure differential indicators. It has a piston that can be easily oriented to yield either a normally closed or normally open position. The indicator has at least one protrusion on a plastic overmold to engage the swage collar and resist axial rotation of the pin. A pressure seal interrupting the plastic overmold sections and exposing the underlying metal to allow for an O-ring seal with no potential leak path between plastic and metal. Finally, the pressure differential indicator has all moving components contained within a single cavity.