GB2581239A8 - Flow signal detection circuit and control system - Google Patents

Flow signal detection circuit and control system Download PDF

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Publication number
GB2581239A8
GB2581239A8 GB1917720.3A GB201917720A GB2581239A8 GB 2581239 A8 GB2581239 A8 GB 2581239A8 GB 201917720 A GB201917720 A GB 201917720A GB 2581239 A8 GB2581239 A8 GB 2581239A8
Authority
GB
United Kingdom
Prior art keywords
control chip
control
capacitor
port
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1917720.3A
Other versions
GB201917720D0 (en
GB2581239A (en
GB2581239B8 (en
GB2581239B (en
Inventor
Hou Quanduo
Zeng Yan
Li Weibin
Hong Yihui
Gao Shaohong
Gao Yuefeng
Finch Robert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Aquasu Electric Shower Co Ltd
DLP Ltd
Original Assignee
Xiamen Aquasu Electric Shower Co Ltd
DLP Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Aquasu Electric Shower Co Ltd, DLP Ltd filed Critical Xiamen Aquasu Electric Shower Co Ltd
Publication of GB201917720D0 publication Critical patent/GB201917720D0/en
Publication of GB2581239A publication Critical patent/GB2581239A/en
Application granted granted Critical
Publication of GB2581239B publication Critical patent/GB2581239B/en
Publication of GB2581239A8 publication Critical patent/GB2581239A8/en
Publication of GB2581239B8 publication Critical patent/GB2581239B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/19—Monitoring patterns of pulse trains
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/125—Discriminating pulses
    • H03K5/1252—Suppression or limitation of noise or interference

Abstract

A flow signal detection circuit comprises an input capacitor C1 connected to a trigger port (TRI) of a control chip U1 and receiving a pulsed flow signal from a flow sensor, for example a Hall element. An RC network comprising a series connected resistor R2 and capacitor C2, with the resistor connected to a power supply VDD and the capacitor connected to ground GND, has its centre node connected to both a discharge (DIS) and threshold port (THR) of the control chip. A voltage control port (CON) of the control chip is grounded via a third capacitor C3. Additionally, a diode D1 has its anode connected to the control chip threshold and trigger ports, and its cathode connected to the control chip trigger port and to the power supply via a pull-up resistor R1. The control chip outputs a high signal when a valid pulse train is received. A flow control system (Fig.2) comprises the flow signal detection circuit and a control module, each connected in parallel between an output of a flow sensor and separate inputs of a judgement circuit. The system may be used to control a load, e.g. a water heater, when both inputs to the judgement circuit are high; this may prevent false load activation due to signal noise.
GB1917720.3A 2019-01-31 2019-12-04 Flow signal detection circuit and control system Active GB2581239B8 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920176644.4U CN209514352U (en) 2019-01-31 2019-01-31 A kind of flow signal detection circuit and control system

Publications (5)

Publication Number Publication Date
GB201917720D0 GB201917720D0 (en) 2020-01-15
GB2581239A GB2581239A (en) 2020-08-12
GB2581239B GB2581239B (en) 2021-09-15
GB2581239A8 true GB2581239A8 (en) 2021-10-13
GB2581239B8 GB2581239B8 (en) 2021-10-13

Family

ID=68203638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1917720.3A Active GB2581239B8 (en) 2019-01-31 2019-12-04 Flow signal detection circuit and control system

Country Status (2)

Country Link
CN (1) CN209514352U (en)
GB (1) GB2581239B8 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109683537A (en) * 2019-01-31 2019-04-26 厦门阿玛苏电子卫浴有限公司 A kind of flow signal detection circuit, control system and control method

Also Published As

Publication number Publication date
GB201917720D0 (en) 2020-01-15
CN209514352U (en) 2019-10-18
GB2581239A (en) 2020-08-12
GB2581239B8 (en) 2021-10-13
GB2581239B (en) 2021-09-15

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Legal Events

Date Code Title Description
S13A Application for inventor to be mentioned (section 13(1)/patents act 1977)

Free format text: APPLICATION FILED; APPLICATION UNDER RULE 10 FOR INVENTOR TO BE MENTIONED FILED ON 8TH APRIL 2021 BY DLP LIMITED.

S13C Application for inventor not to be mentioned (section 13(3) patents act 1977)

Free format text: APPLICATION FILED; APPLICATION FOR A PERSON NOT TO BE MENTIONED AS INVENTOR UNDER SECTION 13(3) BY DLP LIMITED 8TH APRIL 2021.

S8A Determination before grant of uk entitlement (section 8(1)/patents act 1077)

Free format text: REFERENCE FILED; REFERENCE AS TO ENTITLEMENT UNDER SECTION 8(1) BY DLP LIMITED, FILED ON 8TH APRIL 2021

S12A Determination of foreign entitlement (sect. 12(1)/patents act 1977)

Free format text: REFERENCE FILED; REFERENCE UNDER SECTION 12(1) BY DLP LIMITED FILED ON 8TH APRIL 2021, PATENT WAS WITHDRAWN ON 04 JUNE 2021

S13A Application for inventor to be mentioned (section 13(1)/patents act 1977)

Free format text: APPLICATION FILED; APPLICATION UNDER RULE 10 FOR INVENTOR TO BE MENTIONED FILED ON 8TH APRIL 2021 BY DLP LIMITED, WITHDRAWN ON 4 JUNE 2021

S13C Application for inventor not to be mentioned (section 13(3) patents act 1977)

Free format text: APPLICATION FILED; APPLICATION FOR A PERSON NOT TO BE MENTIONED AS INVENTOR UNDER SECTION 13(3) BY DLP LIMITED 8TH APRIL 2021, PATENT WAS WITHDRAWN ON 04 JUNE 2021

S8A Determination before grant of uk entitlement (section 8(1)/patents act 1077)

Free format text: REFERENCE FILED; REFERENCE AS TO ENTITLEMENT UNDER SECTION 8(1) BY DLP LIMITED, FILED ON 8TH APRIL 2021, PATENT WAS WITHDRAWN ON 04 JUNE 2021

S13A Application for inventor to be mentioned (section 13(1)/patents act 1977)

Free format text: APPLICATION FILED; APPLICATION UNDER RULE 10(2) FOR INVENTOR TO BE MENTIONED FILED ON 28 JULY 2021 BY XIAMEN AQUASU ELECTRIC SHOWER CO. LTD.

S37A Reference after grant concerning uk entitlement (sect. 37(1)/patents act 1977)

Free format text: REFERENCE FILED; REFERENCE UNDER SECTION 37 BY XIAMEN AQUASU ELECTRIC SHOWER CO. LTD. FILED ON 28 JULY 2021.

S13A Application for inventor to be mentioned (section 13(1)/patents act 1977)

Free format text: APPLICATION DETERMINED; IN A DECISION OF THE COMPTROLLER DATED 20 SEPTEMBER 2021, THE COMPTROLLER FOUND THAT ROBERT FINCH SHOULD BE NAMED AS A JOINT INVENTOR IN RESPECT OF PATENT GB2581239. IT WAS DIRECTED THAT AN ADDENDUM SLIP BE PREPARED TO REFLECT THIS FOR THE PUBLISHED PATENT APPLICATION AND GRANTED PATENT.

S37A Reference after grant concerning uk entitlement (sect. 37(1)/patents act 1977)

Free format text: REFERENCE DETERMINED; IN A DECISION OF THE COMPTROLLER DATED 20 SEPTEMBER 2021, THE COMPTROLLER FOUND THAT DLP LTD SHOULD BE NAMED AS CO- PROPRIETOR IN RESPECT OF PATENT GB2581239. IT WAS DIRECTED THAT AN ADDENDUM SLIP BE PREPARED TO REFLECT THIS FOR THE PUBLISHED PATENT APPLICATION AND GRANTED PATENT.