There is described a test block intended to be implanted in the circuit connecting an apparatus to be tested such as an electricity meter or a protective relay and a power source supplying the apparatus to be tested such as an intensity sensor and/or a voltage sensor, the test block comprising a base including a plurality of inner electric circuits capable of allowing the transmission of information from the power source to the apparatus to be tested and a protective cover intended to be removably assembled with the base in order to form a closed enclosure in which the inner electric circuits are housed. The base and the protective cover are configured such that the removal of the protective cover gives access to a receiving site delimited by the base and capable of receiving, by plugging, a test plug independent of the test block and electrically linked to a test equipment, in particular a voltmeter and/or an ammeter and/or a dummy current source. The base and the protective cover comprise electrically conductive elements linked to each other and configured so as to ensure a continuity and magnetic shielding closure such that the enclosure delimited by the base and the protective cover is a Faraday cage protecting the inner electric circuits relative to the magnetic fields external to the enclosure delimited by the base and the protective cover.

A power supply includes a first and second electric storage sections, a first sensor detecting a first current of charge/discharge of the first storage section, a second sensor detecting a second current of the charge/discharge of the second storage section, and a circuit module having a control section to determine a state of the first sensor, the second sensor, and/or a third sensor detecting a third current of a driving section by comparing a first current with a third current in a charge/discharge between the first storage section and the driving section, and/or a second current with the third current in a charge/discharge between the second storage section and the driving section, and by comparing the first current with the second current and the first current with the third current in the discharge of the first storage section to the second storage section and the driving section.

The disclosure includes embodiments for determining a working status of a set of sensors onboard in a connected vehicle through a validation of roadway segment activity data. In some embodiments, a method for the connected vehicle includes receiving, via a communication unit of the connected vehicle, a Vehicle-to-Everything (V2X) message that includes off-board roadway segment activity data. The method includes generating onboard roadway segment activity data of the connected vehicle. The method includes determining a working status of a set of onboard sensors of the connected vehicle based on an evaluation between the onboard roadway segment activity data and the off-board roadway segment activity data. The method includes modifying an operation of a vehicle control system of the connected vehicle based on the working status of the set of onboard sensors.

An overvoltage detection circuit coupled to an external power supply via a voltage supply line and comprising a transistor comprising first terminal coupled to the voltage supply line, second terminal coupled to the first terminal via a resistor, the second terminal coupled to a parasitic capacitor, the transistor configured to receive an overvoltage spike from the external power supply on the first terminal, and provide an output voltage on third terminal of the transistor to indicate detection of the overvoltage spike when it has a duration less than a time constant based on the resistor and the parasitic capacitor and amplitude that exceeds a threshold voltage of the transistor. The overvoltage detection circuit further comprises a monitor circuit configured to receive the output voltage from the transistor and provide a digital signal providing a notification of the detected overvoltage spike from the external power supply on the voltage supply line.

Disclosed embodiments of the invention include methods and systems for upgrading an existing irrigation system to increase its sensing and control capability without requiring extensive rewiring. A controller module is installed between an irrigation controller and a zone valve and physically proximate to the irrigation controller without disturbing most of the existing wiring between the irrigation controller and the zone valve. A field module is installed between the controller module and the zone valve without disturbing most of the existing wiring between the irrigation controller and the zone valve. The controller module and field module are the communicatively coupled primarily using the existing wiring. The controller module may encode commands transmitted to the field module and/or decode encoded data transmitted from the field module. The field module may encode data transmitted to the controller module and/or decode encoded commands transmitted from the controller module.

A sensor operates to produce a differential signal with a voltage regulated that generates a regulated voltage to a first sensor element for detecting a physical parameter. A current mirror circuit is configured to provide a first sensor current to the first sensor element, detect the first sensor current at the first sensor element and duplicate the detected current to provide a second sensor current to a second sensor element. The second sensor element detects the physical quantity with the replicated current.

Sensor devices and methods are provided where a test signal is applied to a capacitive sensor. Furthermore, a bias voltage is applied to the capacitive sensor via a high impedance component. A path for applying the test signal excludes the high impedance component. Using this testing signal, in some implementations a capacity imbalance of the capacitive sensor may be detected.

A method, including determining a change in an actuator impedance based on a change in an electrical property of a system of which the actuator is apart, and determining one or more system characteristics based on the change in the actuator impedance.

The present disclosure provides a circuit testing method and a circuit testing system for testing the circuit of a transmissive capacitive touch panel, wherein, the method comprises: when testing a certain induction line in a first electrode matrix or a second electrode matrix, configuring all induction lines in the first electrode matrix and the second electrode matrix except for the induction line to be tested as ground wires, applying a first voltage to the induction line to be tested, and detecting current on the induction line to be tested, and determining that the induction line to be tested is in a short-circuit state when the current is generated on the induction line to be tested; repeating the above step, and testing other induction lines in turn.

The present disclosure relates to a system for monitoring a solenoid operated valve including at least one coil and at least one spool. The system compares a normalized current signature and a normalized current signature comparator to determine a spool fault condition.