FI88966C - Indirekt strömmätningskrets - Google Patents

Indirekt strömmätningskrets Download PDF

Info

Publication number
FI88966C
FI88966C FI903520A FI903520A FI88966C FI 88966 C FI88966 C FI 88966C FI 903520 A FI903520 A FI 903520A FI 903520 A FI903520 A FI 903520A FI 88966 C FI88966 C FI 88966C
Authority
FI
Finland
Prior art keywords
current
coupling
circuit
diode
time
Prior art date
Application number
FI903520A
Other languages
English (en)
Finnish (fi)
Other versions
FI88966B (fi
FI903520A0 (fi
FI903520L (fi
Inventor
Jaakko Ollila
Original Assignee
Neste Oy
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 Neste Oy filed Critical Neste Oy
Priority to FI903520A priority Critical patent/FI88966C/sv
Publication of FI903520A0 publication Critical patent/FI903520A0/fi
Priority to PCT/FI1991/000207 priority patent/WO1992001231A1/en
Priority to EP91911785A priority patent/EP0593466A1/en
Publication of FI903520L publication Critical patent/FI903520L/fi
Application granted granted Critical
Publication of FI88966B publication Critical patent/FI88966B/fi
Publication of FI88966C publication Critical patent/FI88966C/sv

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Electronic Switches (AREA)

Claims (2)

1. Indirekt strömmitningskrets för en räknande ströobrytare, vars hu-vudströmkrets bestir av en koppling (S2), en diod (D) och en induktans 5 (L), kanne tecknad därav, att det matta momentana värdet (ux) pi strömmen av kopplingen (S2) ar proportionell mot strömmen (is) son löper genom kopplingen (Sj^) och di kopplingen (Si) leder ocksi mot belastningsströmmen (iL), att man frin utgingen (u3) av kopplingen som bildas av analogikopplingen (S2) och en integrerande RC-krets (R^) fir 10 en signal som ar proportionell mot integraldelen (Xj) av ekvationen (3) il = (3) * o där 15 t8 - kopplingens Sx ledningstid td - diodens D ledningstid T - tiden iL(t) - strömmen som en funktion av tiden 20 att analogikopplingen (S3) och den andra RC-kretsen (R2C2) uppfyller följande multiplikation i ekvationen (3) ta + td T att komparatorn (compl) ar anordnad att fungera som indikator för diod-25 strömmen (D) genom att basera sig pi en studie av polariteten av spin-ningen över dioden (D), varvid signalen som erhills frin komparatorn (compl) ir Ug - "1" di dioden (D) leder, varvid styrsignalen (ue) av kopplingen (Sx) direkt uttrycker strömmen som löper genom kopplingen och att utgingsspdnningen av eller-organet (ori) ir u10 - "1" för tiden 30 0<t<tg+td och noll endast di strömmen blir diskontinuerlig inom t ids in- l0 88966 tervailen t,+td<t<T, vld kontinuerlig Ström gAller t.+^a ” varvid be- lastnlngsströmmen (IL) awiker frAn noil om strömmen av ant^n8en dioden (D) eller koppilngen (S2) awiker frAn noil.
2. StrömmAtningskrets enllgt patentkrav 1, kAnnetecknad dArav, att operatlonsförstArkaren (opi) Ar anordnad att fungera som spAnnlngssucessor eller som en icke-inverterande förstärkare och för att hindra belastningen av RC-kretsen (R^) och att operatlonsförstArkaren (op2) Ar anordnad att fungera som spAnnlngssucessor eller som 10 Icke-inverterande förstArkare genom att dArvid förhindra belastningen av RC-kretsen (R2C2) . 15
FI903520A 1990-07-11 1990-07-11 Indirekt strömmätningskrets FI88966C (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI903520A FI88966C (sv) 1990-07-11 1990-07-11 Indirekt strömmätningskrets
PCT/FI1991/000207 WO1992001231A1 (en) 1990-07-11 1991-07-01 An indirect current measuring circuit
EP91911785A EP0593466A1 (en) 1990-07-11 1991-07-01 An indirect current measuring circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI903520A FI88966C (sv) 1990-07-11 1990-07-11 Indirekt strömmätningskrets
FI903520 1990-07-11

Publications (4)

Publication Number Publication Date
FI903520A0 FI903520A0 (fi) 1990-07-11
FI903520L FI903520L (fi) 1992-01-12
FI88966B FI88966B (fi) 1993-04-15
FI88966C true FI88966C (sv) 1993-07-26

Family

ID=8530793

Family Applications (1)

Application Number Title Priority Date Filing Date
FI903520A FI88966C (sv) 1990-07-11 1990-07-11 Indirekt strömmätningskrets

Country Status (3)

Country Link
EP (1) EP0593466A1 (sv)
FI (1) FI88966C (sv)
WO (1) WO1992001231A1 (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106443156B (zh) * 2016-10-31 2023-06-30 成都雅骏新能源汽车科技股份有限公司 一种电动汽车电流测量电路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1638008B2 (de) * 1968-01-23 1975-07-10 Danfoss A/S, Nordborg (Daenemark) Mit Gleichspannung gespeiste, geregelte Gleichspannungsversorgungseinrichtung
JPS61293160A (ja) * 1985-06-18 1986-12-23 Fuji Electric Co Ltd 直流電圧変換回路

Also Published As

Publication number Publication date
WO1992001231A1 (en) 1992-01-23
FI88966B (fi) 1993-04-15
EP0593466A1 (en) 1994-04-27
FI903520A0 (fi) 1990-07-11
FI903520L (fi) 1992-01-12

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Legal Events

Date Code Title Description
BB Publication of examined application
MM Patent lapsed
MM Patent lapsed

Owner name: NESTE OY