Mettler Toledo (changzhou) Measurement Technology Ltd.

Mettler Toledo (changzhou) Precision Instrument Ltd.

Mettler Toledo (changzhou) Scale & System Ltd.

Mettler-toledo Measurement Technology Ltd.

Yangjie Xu

Ying Zhang

Zhitie Lin

A CAN bus explosion proof node structure is disclosed which includes a physical parameter sensor, a physical parameter measurement circuit, a master controller, a data storage module, a communication interface module, and a power voltage and current limiting module. The master controller performs service processing of the digital signals, compares them with respective threshold levels to determine whether dangerous situations occur for the explosion proof node, and sends out an alarm when dangerous situations occur for the explosion proof node. The power voltage and current limiting module limits a maximum open circuit voltage and a maximum short circuit current of input power so that explosive gas and dust will not ignite when the nodes are in normal operation or experience failures.

Bus explosion proof network and explosion proof node structure thereof

The present invention relate to a bus network having a safety gate of a substantial safety isolation type. The bus network comprises a first region, a second region, and signal isolators. The first region has disposed therein a first bus and has distributed therein one or more first processing devices, one or more first transceivers, one or more first controllers, and one or more gateways. The second region has disposed therein a second bus and has distributed therein one or more second processing devices and one or more second transceivers. The signal isolators are disposed between the first region and the second region. An isolation device driving terminal and an output terminal on one side of the signal isolator are respectively connected to a transmitting terminal and a receiving terminal of a second controller. An output terminal and an isolation device driving terminal on the other side of the signal isolator are respectively connected to a transmitting terminal and a receiving terminal of a second transceiver.

Growing community of inventors

Jiangsu, China

Yangjie Xu