DE2157821A1 - COUNTING AND MONITORING SYSTEM FOR PERSONS, VEHICLES OR THE LIKE - Google Patents
COUNTING AND MONITORING SYSTEM FOR PERSONS, VEHICLES OR THE LIKEInfo
- Publication number
- DE2157821A1 DE2157821A1 DE19712157821 DE2157821A DE2157821A1 DE 2157821 A1 DE2157821 A1 DE 2157821A1 DE 19712157821 DE19712157821 DE 19712157821 DE 2157821 A DE2157821 A DE 2157821A DE 2157821 A1 DE2157821 A1 DE 2157821A1
- Authority
- DE
- Germany
- Prior art keywords
- counting
- monitoring system
- detector
- vehicles
- infrared
- 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.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims description 13
- 230000005855 radiation Effects 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Classifications
-
- 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
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
- G08B13/191—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using pyroelectric sensor means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Traffic Control Systems (AREA)
Description
Zähl- und Überwachungsanlage für Personen, Fahrzeuge oder dgl.Counting and monitoring system for people, vehicles or the like.
Die Erfindung betrifft eine Zähl- und Überwachungsanlage für Personen, Fahrzeuge oder dgl..The invention relates to a counting and monitoring system for people Vehicles or the like.
Es werden heute verschiedenartige Anlagen für diesen Zweck eingesetzt, wobei unterschiedliche physikalische Effekte ausgenützt werden. Bekannt sind z.B. Radaranlagen zur Überwachung der Fahrgeschwindigkeit oder zum bloßen Zählen von Fahrzeugen.Various systems are used today for this purpose, whereby different physical effects are used. Known are e.g. Radar systems for monitoring the speed of travel or just counting Vehicles.
Diese Anlagen arbeiten mit lIochfrequenzsignalen und sind infolge ihres Umfanges und Gewichtes meist am Boden neben den tberwachungsstrecken aufgestellt. Ihr Bildfeld umfaßt Pahrzeuge, die sich in den beiden Fahrtrichtungen einer Straße bewegen.These systems work with high frequency signals and are consequent their size and weight are usually placed on the ground next to the surveillance routes. Your field of view includes vehicles that are in both directions of travel on a street move.
Bekannt sind ferner Lichtschranken für viele ähnliche hnwendungen. Hierzu müssen sowohl Strahlungssender als auch Strahlungsempfänger an dem zu tiberwachenden Ort installiert werden.Light barriers are also known for many similar applications. For this purpose, both the radiation transmitter and the radiation receiver must be on the one to be monitored Place to be installed.
Neuerdings lassen sich Verkehrsüberwachungen auch mittels Induktionsschleifen durchführen, die allerdfings in den Fahrbahnen installiert werden müssen.Recently, traffic monitoring can also be carried out using induction loops carry out which, however, must be installed in the roadways.
Aufgabe der Erfindung ist es, eine Zähl- und Überwaöhungsanlage für Personen, ahrzeuge oder dgl. anzugeben, welche eine hohe Empfindlichkeit und kurze Ansprechzeit besitzt, ein scharfveinstellbares Bildfeld erfassen kann, geringe Abmessungen und ein geringes aewicnt aufweist und welche problemlos auf- oder abgebaut werden kann.The object of the invention is to provide a counting and monitoring system for To indicate persons, vehicles or the like, which have a high sensitivity and short Has response time, can capture a sharply adjustable image field, small dimensions and has a low weight and which can be easily assembled or disassembled can.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein ungekühlter pyroelektrischer Infrarotdetektor mit geringem Eigenrauschen verwendet wird, der die von den zu beobachtenden Objekten ausgesandte Infrarotstrahlung registriert.This object is achieved according to the invention in that an uncooled Pyroelectric infrared detector with low self-noise is used, the registers the infrared radiation emitted by the objects to be observed.
Der pyroelektrische Detektor, der vorzugsweise einen Triglyzinsulfatkristall enthält, weist alle technischen Daten auf, die für eine Zählung von Fahrzeugen mit Geschwindigkeiten bis zu etwa 100 km/h erforderlich sind: 1. Eine Zeitkonstante von # # 2 ms, 2. Empfindlichkeit für .JellenlärXgen um 1O/um,-bei denen das Maximum der thermischen Infrarotstrahlung von Fahrzeugen und Personen liegt, 3. Eine Detektivität von D* > 108 cm . 2 Kz 1/2, die eine Temperaturauflösung von etwa 0,100 ermöglicht, 4. Kleine Abmessungen des Detektors samt Optik und Entzerrer-Vorverstärker, 5. Wartungsfreier Betrieb, da im Gegensatz zu vielen anderen Infrarotdetektoren kein Kühlmittel benötigt wird.The pyroelectric detector, which is preferably a triglyzine sulfate crystal contains all the technical data necessary for counting vehicles with Speeds up to about 100 km / h are required: 1. A time constant of # # 2 ms, 2nd sensitivity for .JelllärXgen around 1O / um, -with which the maximum thermal infrared radiation from vehicles and people, 3. Detectivity from D *> 108 cm. 2 Kz 1/2, which enables a temperature resolution of about 0.100, 4. Small dimensions of the detector including optics and equalizer preamplifier, 5. Maintenance-free Operation because, in contrast to many other infrared detectors, no coolant is required will.
Eine scharfe Abgrenzung des Bildfeldes wird insbesondere durch eine Vorrichtung erreicht, die aus einer Siliziuralinse besteht, welche nur für Infrarotstrahlung durchlässig ist und ein vorgegebenes Bildfeld auf den pyroelektrischen Detektor abbildet. Die aktive Fläche des Detektors ist etwa 1 mm2 groß.A sharp delimitation of the image field is achieved in particular by a Device achieved, which consists of a silicon lens, which only for infrared radiation is permeable and a predetermined field of view on the pyroelectric detector maps. The active area of the detector is about 1 mm2.
Mit dem Detektor ist vorteilhafterweise ein Entzerrer-Vorverstärker zusammengebaut, der den Frequenzgang des Detektors entzerrt und das Si-tnalfrequenzband auf 1 Hz ... 75 Hz begrenzt.An equalizer preamplifier is advantageously used with the detector assembled, which equalizes the frequency response of the detector and the signal frequency band limited to 1 Hz ... 75 Hz.
Durch die untere Grenze werden langsame, etwa witterungsbedingte Temperatursch.vankungen unterdrückt, durch die obere Grenze das Detektorrauschen klein gehalten.The lower limit results in slow, weather-related temperature fluctuations suppressed, the detector noise is kept small by the upper limit.
In der Figurenbeschreibung wird ein Ausfuhrungsbeispiel der Erfindung erläutert.An exemplary embodiment of the invention is shown in the description of the figures explained.
Die Pigur zeigt eine flberwachungsanlage für Kraftfahrzeuge.Pigur shows a monitoring system for motor vehicles.
z Die Überwachungsanlage besteht aus einer Siliuiumlinse 1, welche die gemperaturstrahlzng eines durch ein scharf abgegrenztes Bildfeld 2 fahrenden Autos 3 auf den pyroelektrischen Detektor 4 abbildet, dessen Signalspannung dem Entzerrer-Vorverstärker 5 zugeleitet wird. Die verstärkten Signale werden über eine elektrische Leitung 6 einem Oszillographen 7 zugeführt, welcher die Signale 8 sichtbar macht. Das aus der Linse 1, dem Detektor 4 und dem Verstärker 5 bestehende Gerät besitzt sehr kleine Abmessungen, etwa in der Größe einer Zigarettenpackung und kann daher für Verkehrszählungen, z.B.z The monitoring system consists of a silicon lens 1, which the temperature radiation of a person traveling through a sharply delimited image field 2 Cars 3 on the pyroelectric detector 4 maps, the signal voltage of the Equalizer preamplifier 5 is fed. The amplified signals are transmitted via a electrical line 6 is fed to an oscilloscope 7, which makes the signals 8 visible power. The device consisting of the lens 1, the detector 4 and the amplifier 5 has very small dimensions, about the size of a pack of cigarettes and can therefore for traffic counts, e.g.
an einem Mast seitlich oberhalb der Fahrbahn befestigt werden.be attached to a mast laterally above the roadway.
Wegen des scharf begrenzten Bildfeldes 2 ist es möglich, nur eine einzige Pahrspur einer zu überwachenden Straße zu erfassen.Because of the sharply delimited field of view 2, it is possible to only use one to record only one lane of a road to be monitored.
Das Anzeigegerät kann in einiger Entfernung- davon aufgestellt sein.The display device can be set up at some distance from it.
Durch Ersatz des Anzeigegerätes 7 durch eine elektronische Zählvorrichtung kann mit dieser Anlage beispielsweise die Verkehrsdichte zu bestimmten Zeiten automatisch festgehalten werden.By replacing the display device 7 with an electronic counting device This system can, for example, automatically check the traffic density at certain times be held.
In ähnlicher Weise kann die Anlage auch. zur Überwachung von Räumen gegen Personen verwendet werden 1 Figur 4 PatentansprücheSimilarly, the plant can also. for monitoring rooms used against people 1 Figure 4 claims
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712157821 DE2157821A1 (en) | 1971-11-22 | 1971-11-22 | COUNTING AND MONITORING SYSTEM FOR PERSONS, VEHICLES OR THE LIKE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712157821 DE2157821A1 (en) | 1971-11-22 | 1971-11-22 | COUNTING AND MONITORING SYSTEM FOR PERSONS, VEHICLES OR THE LIKE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2157821A1 true DE2157821A1 (en) | 1973-05-30 |
Family
ID=5825771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19712157821 Pending DE2157821A1 (en) | 1971-11-22 | 1971-11-22 | COUNTING AND MONITORING SYSTEM FOR PERSONS, VEHICLES OR THE LIKE |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2157821A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2920333A1 (en) * | 1978-07-21 | 1980-01-31 | Giken Trading Co | DEVICE FOR NUMBER OF PERSONS |
| DE3142978A1 (en) * | 1981-10-29 | 1983-05-19 | Siemens AG, 1000 Berlin und 8000 München | Method and apparatus for detecting when vehicles enter or leave a particular section (measuring zone) of a traffic area |
| DE3602299A1 (en) * | 1986-01-27 | 1987-07-30 | Bernd A Langenfeld | Person detection and identification system |
| WO1990005969A2 (en) * | 1988-11-14 | 1990-05-31 | David Kenneth Martell | Traffic congestion monitoring system |
| EP0814446A1 (en) * | 1996-06-18 | 1997-12-29 | Siemens Plc | Improvements in or relating to traffic control systems |
| US8195188B2 (en) | 1997-08-04 | 2012-06-05 | Enovsys Llc | Location reporting satellite paging system with optional blocking of location reporting |
-
1971
- 1971-11-22 DE DE19712157821 patent/DE2157821A1/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2920333A1 (en) * | 1978-07-21 | 1980-01-31 | Giken Trading Co | DEVICE FOR NUMBER OF PERSONS |
| DE3142978A1 (en) * | 1981-10-29 | 1983-05-19 | Siemens AG, 1000 Berlin und 8000 München | Method and apparatus for detecting when vehicles enter or leave a particular section (measuring zone) of a traffic area |
| DE3602299A1 (en) * | 1986-01-27 | 1987-07-30 | Bernd A Langenfeld | Person detection and identification system |
| WO1990005969A2 (en) * | 1988-11-14 | 1990-05-31 | David Kenneth Martell | Traffic congestion monitoring system |
| WO1990005969A3 (en) * | 1988-11-14 | 1990-06-28 | David Kenneth Martell | Traffic congestion monitoring system |
| US5317311A (en) * | 1988-11-14 | 1994-05-31 | Martell David K | Traffic congestion monitoring system |
| EP0814446A1 (en) * | 1996-06-18 | 1997-12-29 | Siemens Plc | Improvements in or relating to traffic control systems |
| US5892226A (en) * | 1996-06-18 | 1999-04-06 | Siemens Plc | Traffic control systems |
| US8195188B2 (en) | 1997-08-04 | 2012-06-05 | Enovsys Llc | Location reporting satellite paging system with optional blocking of location reporting |
| US8559942B2 (en) | 1997-08-04 | 2013-10-15 | Mundi Fomukong | Updating a mobile device's location |
| US8706078B2 (en) | 1997-08-04 | 2014-04-22 | Enovsys Llc | Location reporting satellite paging system with privacy feature |
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