BR9810050A - Conjunto de circuitos eletrônicos para circuitos de cronometragem e retardo - Google Patents

Conjunto de circuitos eletrônicos para circuitos de cronometragem e retardo

Info

Publication number
BR9810050A
BR9810050A BR9810050A BR9810050A BR9810050A BR 9810050 A BR9810050 A BR 9810050A BR 9810050 A BR9810050 A BR 9810050A BR 9810050 A BR9810050 A BR 9810050A BR 9810050 A BR9810050 A BR 9810050A
Authority
BR
Brazil
Prior art keywords
signal
circuit
counter
capacitor
release
Prior art date
Application number
BR9810050A
Other languages
English (en)
Inventor
Robert S Patti
Original Assignee
Ensign Bickford Co
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 Ensign Bickford Co filed Critical Ensign Bickford Co
Publication of BR9810050A publication Critical patent/BR9810050A/pt

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/121—Initiators with incorporated integrated circuit
    • F42B3/122—Programmable electronic delay initiators

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Electronic Switches (AREA)
  • Pulse Circuits (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Manipulation Of Pulses (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)

Abstract

<B>CONJUNTO DE CIRCUITOS ELETRôNICOS PARA CIRCUITOS DE CRONOMETRAGEM E RETARDO<D> Um circuito de retardo eletrônico (10) útil para a iniciação retardada de detonadores ilustra várias características novas que podem ser combinadas, incluindo um oscilador novo (34), um circuito temporizador programável (32) e um circuito de controle de funcionamento (46). O oscilador (34) gera um sinal de relógio determinado pela taxa de descarga de um capacitor (34a) em relação a uma voltagem de referência REF. Um segundo capacitor (34b) é carregado a uma voltagem que exceda REF, e quando o primeiro capacitor (34a) cai abaixo de REF, um sinal interno é gerado e os capacitores são comutados, de modo que o primeiro capacitor é carregado enquanto o segundo é descarregado. Uma trava (34f) produz pulsos de relógio em resposta aos sinais internos. O circuito temporizador programável (32) inclui um contador de ondas (38) e um banco de programa (40) que carrega uma contagem no contador após inicialização. Cada estágio do contador (38) tem entradas separadas para ajustar e liberar sinais, e o banco de programa (40) tem um circuito de ajuste e um circuito de liberação para cada estágio do contador. Cada circuito de liberação gera um sinal de duração fixa e cada circuito de ajuste pode gerar um sinal de duas durações diferentes, uma das quais excede o sinal de liberação. Durante programação, o sinal estabelecido de duração curta ou longa é escolhido e, ao carregar o contador, o sinal mais longo do sinal de ajuste ou o sinal de liberação determina o estado do estágio do contador. O circuito de controle de funcionamento (46) controla uma porta (34h) que permite que pulsos de oscilador incrementem o contador (38), porém fecha a porta (34h) caso ocorra uma perda temporária em força desse modo impedindo que o temporizador (32) seja reinicializado.
BR9810050A 1997-06-19 1998-06-16 Conjunto de circuitos eletrônicos para circuitos de cronometragem e retardo BR9810050A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/879,162 US5912428A (en) 1997-06-19 1997-06-19 Electronic circuitry for timing and delay circuits
PCT/US1998/012112 WO1998058228A1 (en) 1997-06-19 1998-06-16 Electronic circuitry for timing and delay circuits

Publications (1)

Publication Number Publication Date
BR9810050A true BR9810050A (pt) 2000-09-19

Family

ID=25373560

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9810050A BR9810050A (pt) 1997-06-19 1998-06-16 Conjunto de circuitos eletrônicos para circuitos de cronometragem e retardo

Country Status (16)

Country Link
US (2) US5912428A (pt)
EP (1) EP0991909B1 (pt)
JP (2) JP3575806B2 (pt)
CN (1) CN1267364A (pt)
AR (3) AR012753A1 (pt)
BR (1) BR9810050A (pt)
CA (1) CA2292542C (pt)
CO (1) CO4810289A1 (pt)
DE (1) DE69824290T2 (pt)
ES (1) ES2223132T3 (pt)
ID (1) ID24684A (pt)
NO (1) NO996359D0 (pt)
PE (1) PE42499A1 (pt)
RU (1) RU2205497C2 (pt)
WO (1) WO1998058228A1 (pt)
ZA (1) ZA985294B (pt)

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Also Published As

Publication number Publication date
NO996359L (no) 1999-12-20
JP2004229322A (ja) 2004-08-12
CO4810289A1 (es) 1999-06-30
CN1267364A (zh) 2000-09-20
ES2223132T3 (es) 2005-02-16
AR012753A1 (es) 2000-11-08
JP3575806B2 (ja) 2004-10-13
US5912428A (en) 1999-06-15
EP0991909A1 (en) 2000-04-12
EP0991909B1 (en) 2004-06-02
CA2292542A1 (en) 1998-12-23
RU2205497C2 (ru) 2003-05-27
CA2292542C (en) 2003-11-25
AR019329A2 (es) 2002-02-13
PE42499A1 (es) 1999-05-07
JP2001506467A (ja) 2001-05-15
ID24684A (id) 2000-07-27
NO996359D0 (no) 1999-12-20
AR019330A2 (es) 2002-02-13
ZA985294B (en) 1999-11-23
DE69824290T2 (de) 2005-06-23
DE69824290D1 (de) 2004-07-08
US6268775B1 (en) 2001-07-31
WO1998058228A1 (en) 1998-12-23

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