GB1096992A - Improvements in radiation detectors - Google Patents
Improvements in radiation detectorsInfo
- Publication number
- GB1096992A GB1096992A GB807/64A GB80764A GB1096992A GB 1096992 A GB1096992 A GB 1096992A GB 807/64 A GB807/64 A GB 807/64A GB 80764 A GB80764 A GB 80764A GB 1096992 A GB1096992 A GB 1096992A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detector
- circuit
- radiation
- relay
- warning
- 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
- 230000005855 radiation Effects 0.000 title abstract 6
- 238000001514 detection method Methods 0.000 abstract 3
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000010891 electric arc Methods 0.000 abstract 1
- 238000005286 illumination Methods 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
- F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
1,096,992. Flame and like radiation, detection and monitoring. GRAVINER MANUFACTURING CO. Ltd. and WILKINSON SWORD Ltd. Jan. 8, 1965 [Jan. 8, 1964], No. 807/64. Heading G1A. The invention relates to radiation detection systems particularly for use in the monitoring or detection of ultraviolet from flames. According to the invention a detector is provided having electrodes between which an arc discharge can be initiated by incident radiation. This is connected to an A. C. supply and means are provided performing a controlling, warning or indicating function in response to a change in radiation intensity. In a first embodiment transformer TR1 applies 600 V A. C. across detector PC1 and R1 and R2 in series. A capacitor C4 is in parallel with PC1. Above the instantaneous voltage at which the detector breaks down in the presence of radiation an oscillating voltage appears across PC1 due to the repeated charge and discharge of C4. The voltage developed across R2 is applied to a discriminator comprising a multi-vibrator T1, T2 and negative half cycles cause T2 to conduct and energize relay RL resulting in illumination of warning lamp L1. Capacitor C2 holds the relay during the positive half cycles. It is stated that a short circuit in the detector resulting in the application of the transformer secondary waveform to R1 and R2 results in a signal of lower peak amplitude being applied to the discriminator circuit, such lower signal not being capable of operating the relay. Other embodiments rely on the breakdown of the detector to apply an A. C. voltage to a bridge rectifier energizing a lamp control relay. An integrating circuit introducing a time delay may be incorporated to reduce the effect of spurious signals. In the circuit of Fig. 3 (not shown) a bridge rectifier is in series with the detector and its smoothed D. C. output applied to a relay controlling the warning circuit. In a more complex circuit the bridge rectifier output controls this warning device via a silicon controlled rectifier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB807/64A GB1096992A (en) | 1964-01-08 | 1964-01-08 | Improvements in radiation detectors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB807/64A GB1096992A (en) | 1964-01-08 | 1964-01-08 | Improvements in radiation detectors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1096992A true GB1096992A (en) | 1967-12-29 |
Family
ID=9710846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB807/64A Expired GB1096992A (en) | 1964-01-08 | 1964-01-08 | Improvements in radiation detectors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1096992A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0050953A1 (en) * | 1980-10-23 | 1982-05-05 | Honeywell Inc. | Flame detection circuit |
CN102735666A (en) * | 2012-06-28 | 2012-10-17 | 吴江市宏达探伤器材有限公司 | Ultraviolet crack inspection lamp |
DE102015222263B3 (en) * | 2015-11-11 | 2017-05-24 | Viessmann Werke Gmbh & Co Kg | METHOD AND DEVICE FOR FLAME SIGNAL DETECTION |
-
1964
- 1964-01-08 GB GB807/64A patent/GB1096992A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0050953A1 (en) * | 1980-10-23 | 1982-05-05 | Honeywell Inc. | Flame detection circuit |
CN102735666A (en) * | 2012-06-28 | 2012-10-17 | 吴江市宏达探伤器材有限公司 | Ultraviolet crack inspection lamp |
DE102015222263B3 (en) * | 2015-11-11 | 2017-05-24 | Viessmann Werke Gmbh & Co Kg | METHOD AND DEVICE FOR FLAME SIGNAL DETECTION |
US10704785B2 (en) | 2015-11-11 | 2020-07-07 | Viessmann Werke Gmbh & Co. Kg | Method and device for flame signal detection |
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