Provided is a circuit abnormality diagnosis device capable of simply and easily diagnosing a circuit abnormality, a current generating device including the circuit abnormality diagnosis device, a deployed object ejection device for a flight object including the current generating device, an airbag device for a flight object including the current generating device, and a cutting device for a flight object including the current generating device.

A circuit abnormality diagnosis device 110 includes a calculation unit 1, an inspection power supply 2, a rectifier element 3, overcurrent preventing resistors 4 and 5, a voltage amplification unit 6, a voltage reading unit 7, and a light emitting unit 8, and performs a circuit abnormality diagnosis at a preset time (including the time of initial mounting) or every predetermined time. The circuit abnormality diagnosis device 110 diagnoses (determines) that a case where a voltage value is within a range of a first voltage value V.sub.1 or more and a second voltage value V.sub.2 or less, which is set in advance as a range of voltage values indicating that a circuit is normal, is a normal state, a case where the voltage value is less than the voltage value V.sub.1 is a short-circuit state in which the circuit is short-circuited, and a case where the voltage value is higher than the voltage value V.sub.2 is a disconnection state in which the circuit is disconnected.

Provided is a circuit abnormality diagnosis device capable of simply and easily diagnosing a circuit abnormality, a current generating device including the circuit abnormality diagnosis device, a deployed object ejection device for a flight object including the current generating device, an airbag device for a flight object including the current generating device, and a cutting device for a flight object including the current generating device.

A circuit abnormality diagnosis device 110 includes a calculation unit 1, an inspection power supply 2, a rectifier element 3, overcurrent preventing resistors 4 and 5, a voltage amplification unit 6, a voltage reading unit 7, and a light emitting unit 8, and performs a circuit abnormality diagnosis at a preset time (including the time of initial mounting) or every predetermined time. The circuit abnormality diagnosis device 110 diagnoses (determines) that a case where a voltage value is within a range of a first voltage value V.sub.1 or more and a second voltage value V.sub.2 or less, which is set in advance as a range of voltage values indicating that a circuit is normal, is a normal state, a case where the voltage value is less than the voltage value V.sub.1 is a short-circuit state in which the circuit is short-circuited, and a case where the voltage value is higher than the voltage value V.sub.2 is a disconnection state in which the circuit is disconnected.

A wire harness according to one aspect of the present disclosure includes: a first wire harness that includes a first electric wire, a first shielding member, and a first connector; a second wire harness that includes a second electric wire, a second shielding member, and a second connector; and a connection member that electrically connects a drain wire of the first shielding member and a drain wire of the second shielding member to each other. A drain wire drawn out from an end portion of the first shielding member on the first connector side is grounded. A drain wire drawn out from an end portion of the second shielding member on the second connector side is inserted into a vacant cavity of the second connector.

A wire harness according to one aspect of the present disclosure includes: a first wire harness that includes a first electric wire, a first shielding member, and a first connector; a second wire harness that includes a second electric wire, a second shielding member, and a second connector; and a connection member that electrically connects a drain wire of the first shielding member and a drain wire of the second shielding member to each other. A drain wire drawn out from an end portion of the first shielding member on the first connector side is grounded. A drain wire drawn out from an end portion of the second shielding member on the second connector side is inserted into a vacant cavity of the second connector.

Techniques for determining a potential electrical threat by a utility meter are described herein. A metrology unit of the meter is configured to receive electrical data associated with electrical usage at a location The meter is configured to determine, based on the electrical usage at the location and/or previous electrical data, abnormalities indicative of an unstable connection, such as a loose wire connecting a load to a power supply. The meter may employ a machine learned model or other algorithm to identify the loose wire or unstable connection and is configured to disconnect power to the location and/or send a message to an alarm device at the location and/or to a computing device remote from the location. In this way, the metrology unit can be used to mitigate potential electrical threats, such as fire, due to an unstable connection such as a loose connection.

Techniques for determining a potential electrical threat by a utility meter are described herein. A metrology unit of the meter is configured to receive electrical data associated with electrical usage at a location The meter is configured to determine, based on the electrical usage at the location and/or previous electrical data, abnormalities indicative of an unstable connection, such as a loose wire connecting a load to a power supply. The meter may employ a machine learned model or other algorithm to identify the loose wire or unstable connection and is configured to disconnect power to the location and/or send a message to an alarm device at the location and/or to a computing device remote from the location. In this way, the metrology unit can be used to mitigate potential electrical threats, such as fire, due to an unstable connection such as a loose connection.

A semiconductor integrated circuit includes: one input terminal; multiple output terminals; multiple first current control elements connected between the input terminal and the respective output terminals; a control circuit that controls the first current control elements; a fault detection circuit that includes multiple voltage comparator circuits each of which compares a voltage proportional to a voltage of one of the output terminals with a predetermined threshold voltage and that detects an open-circuit state or a short-circuit state of the output terminals; an external terminal connected to an external resistor; a voltage convertor circuit that generates the threshold voltage according to a voltage of the external terminal that is generated by flowing a current through the external resistor, the threshold voltage being applied to an input terminal of each of the voltage comparator circuits; and a detection result output terminal for outputting a detection result by the fault detection circuit.

A display panel and a display apparatus are provided, the display panel includes a substrate, a plurality of sub-pixels, a plurality of data lines, and a crack detection line. A first peripheral area surrounds a display area; the plurality of data lines are connected to the plurality of sub-pixels; and the crack detection line surrounds the display area, is arranged along the edge of the first peripheral area and a second peripheral region, and is connected to at least one of the plurality of data lines.

The present disclosure provides a method and system for ground fault detection. The method may include obtaining an input voltage and a null-ground voltage; determining whether the null-ground voltage is less than a voltage threshold; if yes, further determining whether the null-ground voltage is less than a preset voltage; if yes, determining that the grounding state is normal; if the null-ground voltage is greater than or equal to the preset voltage, determining that the grounding state is abnormal; if the null-ground voltage is greater than or equal to the voltage threshold, determining that the live wire and the null wire are reversed; in the case that the live wire and the null wire are reversed, determining whether the difference between the input voltage and the null-ground voltage is less than the preset voltage; if yes, determining that the grounding state is normal; if no, determining that the grounding state is abnormal.

A semiconductor integrated circuit device includes a control unit configured to control a switching element or an output transistor of a power supply device, a monitor terminal for monitoring an output voltage of the power supply device, a test unit configured to output a test signal to the monitor terminal before activation of the power supply device, and a determination unit configured to determine whether or not the monitor terminal is open, on the basis of a voltage of the monitor terminal when the test unit outputs the test signal to the monitor terminal.