EP0975203B1 - Monitoring of illumination for telephone booths - Google Patents

Abstract

The method involves regularly checking the light intensity in the cubicle and detecting a fault based on preset values for light or dark. Faults are indicated for service personnel or signaled to a background system. The measurement circuit is activated at a predefined time at which the lighting is known to be intact. The light intensity is measured on successive days at a predefined time when the lighting should be on, and a value for light or dark is determined and stored. The measured value is compared with the stored value and a fault detected and indicated or signaled if they disagree. An independent claim is also included for a circuit for implementing the method.

Description

The invention relates to a method (claim 1) and Circuit arrangement (claim 5) for lighting monitoring for Telephone booth according to the preamble of claim 1.

Illuminated telephone booths, for example the Germans Telekom AG, are generally known. they are Illuminated to facilitate the use of the recognition and Improve findability of telephone booths and the To give customers more security. A control of the Functioning of the lighting is not for the operator easily possible because firstly the location to this Purpose must be sought and secondly that Service personnel normally work during the day when the Illumination not switched on to save electricity is. Currently on the market by Deutsche Telekom AG located public telephone booth will Illumination with a light sensor regularly, in generally checked daily, at night. The Luminosity checked in the telephone booth and based on this and a preset value range for bright or A lighting fault is detected in the dark. she can then on the device during the day for the service personnel displayed or reported to a background system.

The disadvantage of the known solution mentioned above is in that because of the multitude of Telephone booth types, the licking agent and the Installation conditions, such as different or no street lighting, single or Double location with further illuminated Telephone booth, is hard, a fixed range of values for to determine light or dark for all telephone booths. The Risk of false signaling and unnecessary Service effort is great.

The typical range of values for each location can only be achieved by time-consuming trial and error can be determined.

The invention is therefore based on the object improved lighting monitoring for public To create a phone booth in which one procedure and one Circuit arrangement for determining one for each location specially tailored luminosity range among the determine specific conditions and the Control lighting monitoring.

The solution according to the invention for the method is in Characteristic of claim 1 characterized.

Further solutions or refinements of the method for The task is solved in the characteristics of Claims 2 to 4 characterized.

The solution according to the invention for a circuit arrangement is characterized in the characterizing part of claim 5 and further solutions or configurations in the Characteristics of claims 6 and 7.

The technical solution for the process and the Circuit arrangement are characterized by a simple Possibility to determine one for each location specially tailored luminosity range. Thereby, that on several consecutive days the public Phone the current luminosity at a given one Measures time using a measuring circuit at which the Lighting should be on, for example Midnight, is from the measured values Range of values determined for light or dark and in the Circuit saved. From this point on, a monitoring of the Telephone booth lighting takes place automatically. in the if necessary, a fault message from the circuit triggered, for example, a background system immediately is communicated, with the place, the time, and also the type of the respective telephone, for example card telephone or Payphone, can be automatically transferred with.

Further advantages, features and possible applications of the present invention, in particular the method and Circuit arrangement, result from the following Description in conjunction with those in the drawing illustrated embodiments.

The invention is described below with reference to the drawing illustrated embodiments described in more detail. In the description, in the claims, the Summary and in the drawing are those in the list of reference numerals given below Terms and associated reference numerals used.

Fig. 1

ein prinzipielles Operations- bzw. Flußdiagramm des erfindungsgemäßen Verfahrens und

Fig. 2

eine Schaltungsanordnung zur Durchführung des Verfahrens.

In the drawings:

Fig. 1

a basic operation or flowchart of the method according to the invention and

Fig. 2

a circuit arrangement for performing the method.

In the basic operation or flow diagram according to Fig. 1 are the individual basic Operation steps or procedural steps shown. to Setting the control of the lighting will be a new one Measurement of the telephone booth lighting made. The Measurement takes place at a certain point in time n.

The values measured at this time n or the measured value will be in another Process step saved. In a next step it is determined whether a certain number (x) nights was measured.

If not, then a measurement is carried out until the required measurements have been made at certain times. If this has been done, then another one Process step the calculation of the mean and that Set the tolerance range for example for "light" carried out. This calculation and determination takes place on x. Day. From day x + 1 it is determined whether the measured value in specified tolerance range. If so, it will Lighting accepted as fine. If not then there is a fault message. This error message can either be displayed immediately on the phone booth and / or it can be a background system automatically be communicated. This message then contains the pure fault report also the location, the type of the telephone and possibly the nature of the fault, so immediately or later appropriate steps for elimination are initiated can. It has to be mentioned that the Monitoring feature can be explicitly activated must if the respective public telephone Monitor the functioning of the telephone booth lighting should. It must be ensured that the Telephone booth lighting is intact. As already mentioned, measures the public telephone or the circuitry for this function the current luminosity on several days at a given time when the lighting should be switched on. Using an algorithm or a procedure is based on the measured values Range of values for light or dark determined and stored. From this point on, one can open control or monitoring tailored to this point in time the telephone booth lighting.

2 is a basic circuit diagram of a circuit for Illumination monitoring for telephone booths shown the part of a public phone inside is.

Via the activation circuit 1 Telephone booth lighting monitoring switched on. In the downstream measuring circuit 2 is at time n the luminosity is measured and stored in memory 3 enrolled. The measurement takes place in x nights. After x The values saved by the Storage unit for a circuit for generating reference values 4 transfer where the mean is calculated and from it the tolerance range for "bright" for example becomes. This tolerance range is given to the comparison unit 5 forwarded and replaced the old tolerance range, if one already exists.

From the x + 1. At night, the measuring circuit 2 gives the time n measured value directly to the comparison unit 5. Here the measured value is compared with the tolerance range. If a discrepancy is found, this becomes the Fault reporting unit 6 communicated a fault message for the service personnel or at a Background system reports to take appropriate actions trigger.

List of reference numbers

1

activation circuit

2

measuring circuit

3

Memory or storage unit

4

Circuit for reference value formation

5

comparing unit

6

Fault reporting unit

Claims (7)

1. Method of monitoring the lighting of telephone booths with public telephones, the luminous intensity in the telephone booth being regularly checked and a fault in the lighting being detected on the basis of the luminous intensity and of a preset range of values for light and/or dark, said fault being indicated on a device for the service personnel or being reported to a background system, characterized in that
   at a predetermined time at which it is guaranteed that the lighting is intact, the circuit for measuring the respective luminous intensity is activated and/or initiated;
   thereafter on more than one (x) subsequent nights, a circuit arrangement integrated in the telephone is used for automatically measuring the current luminous intensity at a predetermined time (n) at which the lighting is on;
   in a further step, a range of values for "light" and/or "dark" is determined from the measured values and is stored;
   thereafter there is a thereto tailored inspection/monitoring of the telephone booth lighting in that the luminous intensity value measured at the time (n) in the respective night is directly compared with the stored range of values and
   if there is a deviation, a fault is detected, said fault being indicated as a fault message for the service personnel or being automatically transmitted to a background system for the initiation of corrective operations.
2. Method according to claim 1, characterized in that
   in the case of a fault message, the location of the respective public telephone and the type are automatically transmitted together with the fault message to the background system and/or to a service centre.
3. Method according to any one of claims 1 or 2, characterized in that
   the measurement is initialized and/or activated at the predetermined time (n) under microprogram control by the measuring and activating circuit in the public telephone or is performed under remote control by the background system.
4. Method according to any one of claims 1 or 3, characterized in that
   a mean value is calculated in a circuit arrangement for reference value forming (4) and a tolerance range for "light" and/or "dark" is determined therefrom and said tolerance range is transmitted to a comparison unit (5), where it replaces any already previously stored tolerance range as the new valid tolerance range.
5. Circuit arrangement for implementing the method according to any one of claims 1 to 4, characterized in that
   an activating circuit (1) switches on the monitoring of the lighting of the telephone booth;
   a measuring circuit measures the luminous intensity at the determinable time (n) and transmits said luminous intensity to a storage unit (3) for storing;
   thus measured and stored luminous intensity values are supplied by a circuit arrangement for reference value forming (4), said circuit arrangement for reference value forming (4) being connected after the storage unit (3) and serving in particular for the forming of mean values and specifying a tolerance range for a certain lighting condition;
   a comparison unit (5) is connected after the measuring circuit (2) and the circuit arrangement for reference value forming (4) for the purpose of comparing the measured value with the stored tolerance range and
   the comparison unit (5) is connected to a fault reporting unit (6).
6. Circuit arrangement according to claim 5, characterized in that
   the fault reporting unit (6) is formed for direct fault reporting indication for the service personnel and/or is connected to a background system, said background system initiating the remedying of the fault.
7. Circuit arrangement according to claims 5 or 6 for implementing the method according to any one of claims 1 to 4, characterized in that
   the activating circuit (1), the measuring circuit (2), the storage unit (3), the circuit arrangement for reference value forming (4), the comparison unit (5) and the fault reporting unit (6) are an integrated constituent part of the public telephone in a telephone booth or corresponding cubicle.

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