IP Library › Granted Patent US 10,551,441
Granted Patent B2
US 10,551,441 · App. 15/720,216 · Granted Feb 4, 2020

Method and system for relay diagnosis

Inventors: Ping Liu (Ningde, CN); Chenling Zheng (Ningde, CN)
Assignee: Contemporary Amperex Technology Co., Limited
G01R31/3278G01R31/2841G01R31/025
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Quick Facts
Patent No.
US 10,551,441
App. No.
15/720,216
Granted
Feb 4, 2020
Kind
B2
Abstract

The present application discloses a method and a system for relay diagnosis. The method includes: transmitting a control signal to the relay, wherein types of the control signal include an enable signal and a disable signal; applying a detection signal at one side of the relay, and receiving a feedback signal at the other side of the relay; and comparing the detection signal with the feedback signal to obtain a comparison result, wherein if the comparison result matches the control signal, the relay is determined as being normal, otherwise, the relay is determined as fault. The present application simply needs to concern whether the relay being diagnosed is enabled or not, and compares the received feedback signal with the applied detection signal to realize the relay diagnosis, thereby avoiding the impacts from other devices in the relay circuit. Thus, the diagnostic efficiency and accuracy can be improved.

Claims (32)

1. A method for relay diagnosis, comprising:

transmitting a control signal to the relay, wherein types of the control signal comprise an enable signal and a disable signal for closing and opening the relay respectively;

applying a detection signal at one side of the relay, and receiving a feedback signal at the other side of the relay; and

comparing the detection signal with the feedback signal to obtain a comparison result, wherein if the comparison result matches the control signal, the relay is determined as being normal, otherwise, the relay is determined as fault,

wherein if the comparison result matches the control signal, the relay is determined as being normal, otherwise, the relay is determined as fault, particularly comprises:

if the comparison result is inconsistency and the control signal is the disable signal, then the comparison result matches the control signal and the relay is determined as being normal;

if the comparison result is consistence and the control signal is the enable signal, then the comparison result matches the control signal and the relay is determined as being normal;

if the comparison result is inconsistency and the control signal is the enable signal, then the comparison result does not match the control signal and the relay is determined as fault; and

if the comparison result is consistence and the control signal is the disable signal, then the comparison result does not match the control signal and the relay is determined as fault.

2. The method for relay diagnosis of claim 1 , wherein,

if the comparison result is inconsistency and the control signal is the enable signal, then the comparison result does not match the control signal and the relay is determined as fault, particularly comprises: if the comparison result is inconsistency and the control signal is the enable signal, then the comparison result does not match the control signal and the relay is determined as open-circuit fault; and

if the comparison result is consistence and the control signal is the disable signal, then the comparison result does not match the control signal and the relay is determined as fault, particularly comprises: if the comparison result is consistence and the control signal is the disable signal, then the comparison result does not match the control signal and the relay is determined as adhesion fault.

3. The method for relay diagnosis of claim 1 , wherein the detection signal is applied on the inside or outside of the relay.

4. The method for relay diagnosis of claim 1 , wherein the detection signal is applied by a signal generator-receiver in parallel with the relay, and the feedback signal is received by the signal generator-receiver.

5. The method for relay diagnosis of claim 1 , wherein the detection signal is applied by a signal generator connected to one side of the relay, and the feedback signal is received by a signal receiver connected to the other side of the relay.

6. A system for relay diagnosis, comprising:

a control signal transmitting module configured to transmit a control signal to the relay, wherein types of the control signal comprise an enable signal and a disable signal for closing and opening the relay respectively;

a detection-feedback signal module configured to apply a detection signal at one side of the relay, and receive a feedback signal at the other side of the relay; and

a diagnosis module configured to compare the detection signal with the feedback signal to obtain a comparison result, wherein if the comparison result matches the control signal, the relay is determined as being normal, otherwise, the relay is determined as fault,

wherein if the comparison result matches the control signal, the relay is determined as being normal, otherwise, the relay is determined as fault particularly comprises:

if the comparison result is inconsistency and the control signal is the disable signal, then the comparison result matches the control signal, and the relay is determined as being normal;

if the comparison result is consistence and the control signal is the enable signal, then the comparison result matches the control signal and the relay is determined as being normal;

if the comparison result is inconsistency and the control signal is the enable signal, then the comparison result does not match the control signal and the relay is determined as fault; and

if the comparison result is consistence and the control signal is the disable signal, then the comparison result does not match the control signal and the relay is determined as fault.

7. The system for relay diagnosis of claim 6 , wherein,

if the comparison result is inconsistency and the control signal is the enable signal, then the comparison result does not match the control signal and the relay is determined as fault, particularly comprises: if the comparison result is inconsistency and the control signal is the enable signal, then the comparison result does not match the control signal and the relay is determined as open-circuit fault; and

if the comparison result is consistence and the control signal is the disable signal, then the comparison result does not match the control signal and the relay is determined as fault, particularly comprises: if the comparison result is consistence and the control signal is the disable signal, then the comparison result does not match the control signal and the relay is determined as adhesion fault.

8. The system for relay diagnosis of claim 6 , wherein the detection signal is applied on the inside or outside of the relay.

9. The system for relay diagnosis of claim 6 , wherein the detection-feedback signal module is a signal generator-receiver in parallel with the relay.

10. The system for relay diagnosis of claim 6 , wherein the detection-feedback signal module comprises: a signal generator connected to one side of the relay, and a signal receiver connected to the other side of the relay, wherein

the signal generator is configured to apply the detection signal at one side of the relay; and

the signal receiver is configured to receive the feedback signal at the other side of the relay.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 6, 2024
From: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
To: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
Reel/Frame 068338/0723 →
Priority Claims (1)
CN 2016 1 0943230 · Oct 26, 2016 · national
Continuity (1)
Related Publication 20180113170A1 · Apr 26, 2018