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:
Nov. 25, 2025
Filed:
Jun. 17, 2022
Shanghai Chenzhu Instrument Co., Ltd., Shanghai, CN;
Min Xu, Shanghai, CN;
Gang Du, Shanghai, CN;
Jianjun Chen, Shanghai, CN;
Chunhui Zhang, Shanghai, CN;
SHANGHAI CHENZHU INSTRUMENT CO., LTD., Shanghai, CN;
Abstract
The present application discloses a HART circuit and a method for determining the state of the field interface thereof. The HART circuit includes a control interface, an adjustable power supply module, a first HART module, an isolation module, and a field interface. The first HART module is configured to generate a first control signal when receiving a first inquiry signal from the control interface. The adjustable power supply module is configured to output a first power signal to the control interface and, in response to the first control signal, modulate the first power signal into a first HART signal. The isolation module is configured to isolate a signal from the first terminal of the isolation module and couple the isolated signal to a second terminal of the isolation module. The field interface is connected to the second terminal of the isolation module.