ES348491A1 - Pulse Length Discriminator Circuit - Google Patents
Pulse Length Discriminator CircuitInfo
- Publication number
- ES348491A1 ES348491A1 ES348491A ES348491A ES348491A1 ES 348491 A1 ES348491 A1 ES 348491A1 ES 348491 A ES348491 A ES 348491A ES 348491 A ES348491 A ES 348491A ES 348491 A1 ES348491 A1 ES 348491A1
- Authority
- ES
- Spain
- Prior art keywords
- relay
- contacts
- output
- time
- short
- 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.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 abstract 3
- 238000001514 detection method Methods 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/167—Circuit details
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Fire Alarms (AREA)
- Electronic Switches (AREA)
Abstract
Signals from an inductive loop vehicle detector 1 are fed to a circuit including three relays A-C which produce four output signals I-IV the nature of which indicate whether the vehicle passes through the detection zone within a time t o or remains in the zone for a longer period. Relay A operates as long as the vehicle is detected and through its contacts 18 and 19 connects the signal source V, e.g. a positive potential, to the output I. Contacts 15 and 16 operate relay B which connects the source V to the output II if relay A lapses before the expiry of the time t o , relay B is held on for a short time afterwards through capacitor 26, and an output appears at III via contacts 17, 18 and 21, 22. If relay A remains operated for more than the time t o , the capacitor 47 charges sufficiently to fire the thyratron 2 thereby energizing the relay C. This provides an output at IV, and the output at II ceases after a short delay owing to the opening of contacts 31 and 32. When relay A lapses, contacts 11, 12 short-circuit the timing circuit. The signal IV continues for as long as signal I plus a short delay caused by capacitor 50 which holds relay C on for a short time after the opening of contacts 15 and 16.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR88355A FR1524091A (en) | 1966-12-21 | 1966-12-21 | Timed logic circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
ES348491A1 true ES348491A1 (en) | 1969-03-01 |
Family
ID=8622798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES348491A Expired ES348491A1 (en) | 1966-12-21 | 1967-12-21 | Pulse Length Discriminator Circuit |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE708362A (en) |
DE (1) | DE1566875A1 (en) |
ES (1) | ES348491A1 (en) |
FR (1) | FR1524091A (en) |
GB (1) | GB1188970A (en) |
LU (1) | LU55149A1 (en) |
NL (1) | NL6717252A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2138273B1 (en) * | 1971-05-21 | 1975-02-21 | Evr |
-
1966
- 1966-12-21 FR FR88355A patent/FR1524091A/en not_active Expired
-
1967
- 1967-12-18 NL NL6717252A patent/NL6717252A/xx unknown
- 1967-12-19 GB GB5772367A patent/GB1188970A/en not_active Expired
- 1967-12-20 DE DE19671566875 patent/DE1566875A1/en active Pending
- 1967-12-21 BE BE708362D patent/BE708362A/xx unknown
- 1967-12-21 LU LU55149D patent/LU55149A1/xx unknown
- 1967-12-21 ES ES348491A patent/ES348491A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1566875A1 (en) | 1970-04-30 |
LU55149A1 (en) | 1969-08-08 |
GB1188970A (en) | 1970-04-22 |
FR1524091A (en) | 1968-05-10 |
BE708362A (en) | 1968-06-21 |
NL6717252A (en) | 1968-06-24 |
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