MODULE, CIRCUIT AND METHOD OF COMMUNICATION FOR DETECTION DEVICE AND SENSOR COMPRISING SUCH A MODULE, IN PARTICULAR FOR EXPLOSIVE ATMOSPHERE

摘要

A communication module is provided for a sensor, for use in a detection device, including a plurality of sensors, having at least one upstream receiver for receiving an interrogation signal from upstream of the sensor and transporting it to the sensor, and receiving from the sensor a response signal and transporting it upstream of the sensor;—at least one downstream transporter for transporting an interrogation signal downstream of the sensor;—at least one sensor short-circuit, displaceable between an open position wherein the upstream receiver is linked to the sensor, and a closed position in which the upstream receiver is disconnected from the sensor and connected to the downstream transporter; and—at least one controller, for controlling the sensor short-circuit and arranged to maintain the sensor short-circuit:—in the open position until the emission of the response signal, and—in the closed position after the emission.

主权项

1. A communication module for a sensor which includes a sensor means, provided to be used in a detection device, in particular for leakage detection in an explosive atmosphere, comprising a plurality of sensors, comprising:
at least one upstream means, for receiving an interrogation signal from upstream of said sensor and transporting it to the sensor means, and receiving from said sensor means a response signal and transporting it to upstream of the sensor; at least one downstream means, for transporting an interrogation signal to downstream of said sensor; at least one sensor short-circuit means, displaceable between an open position in which the upstream means is linked to a port for communication with the sensor means of the sensor, and a closed position in which the upstream means is disconnected from said port for communication with the sensor means of the sensor and connected to the downstream means; at least one control means, for controlling said short-circuit means, which is arranged so as to maintain said short-circuit means:
in the open position until emission of the response signal, thus making it possible:
in a first direction of communication, to receive the interrogation signal and forward said interrogation signal to the sensor means of the sensor; andin the opposite direction, to emit a response signal provided by the sensor means of the sensor, which is forwarded to the communication module via the communication port and further to the upstream port; andin the closed position after said emission.