The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2018
Filed:
Sep. 28, 2015
Mettler Toledo(changzhou)precision Instrument Ltd., Changzhou, Jiangsu, CN;
Mettler Toledo (Changzhou) Measurement Tech. Ltd., Changzhou, Jiangsu, CN;
Mettler Toledo (Changzhou) Scale & System Ltd., Changzhou, Jiangsu, CN;
METTLER TOLEDO (CHANGZHOU) PRECISION INSTRUMENT LTD., Changzhou, Jiangsu, CN;
METTLER TOLEDO (CHANGZHOU) MEASUREMENT TECHNOLOGY LTD., Changzhou, Jiangsu, CN;
METTLER TOLEDO (CHANGZHOU) SCALE & SYSTEM LTD., Changzhou, Jiangsu, CN;
Abstract
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.