SU1095443A1 - Device for checking duration of engaged condition of taking path device - Google Patents

Abstract

DEVICE OF CONTROL OF DURATION OF EMPLOYMENT OF THE DEVICE OF THE CONVERSATIONAL TRACT, sod. the response relay, through normally open contacts of which the common bus is connected to the input of the occupation determining unit, the occupation number counter and the OR element, whose inputs are connected to the outputs of the employment determining unit and the occupation number counter, and the output of the OR element is the output of the device, characterized by the fact that, in order to increase the control accuracy, a pulse generator connected in series, an element And a ring counter separator, a switch of type of work are entered, and the number of occupants is reversible, while one ring counter-divider is connected to the subtractor, to it and to the summing inputs of the reversible number of occupants, and the other input of the element I is connected to the input of the block for determining the occupancy and through other pairs of normally closed and normally open contacts of the type of work switch is connected respectively to the summing (/) and subtractive inputs of the reversible occupation number counter.

Description

WITH

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00 The invention relates to devices for monitoring the operability of devices of the telephone station's conversational path and can be used to monitor payphones of cordless sets of an automatic telephone station (PBX), sets of connecting lines, long-distance channels, etc. The device for receiving and registering information in telephone stations containing a pulse train allocation unit, a subscriber reception unit, one input of which is connected to the output of a pulse train selection unit, and the second to a clock generator pulses 1. A disadvantage of the known device is the inability to control the duration of the occupation of payphones. The closest to the proposed technical entity is the device for monitoring the duration of an occupation of the device of the conversational path, containing a response relay, through normally closed contacts of which the common bus is connected to the input of the occupation determining unit, the number of occupation numbers and the OR element whose inputs are connected to the outputs the block for determining the occupancy and the count of the number of occupancy, and the output of the element OR is the output of the device 2. However, this device is characterized by low accuracy of the control results associated with the ozhnostyu erroneous issue an alarm at the control unit completely serviceable. The purpose of the invention is to improve the accuracy of control. The goal is achieved by the fact that the device for monitoring the duration of an occupation of the device of the conversational path, containing a response relay, through normally open contacts of which the common bus is connected to the input of the occupation determining unit, the occupation number counter and the OR element, whose inputs are connected to the outputs of the determining unit and the number of occupancy counters, and the output of the OR element is the output of the device, a series-connected pulse generator, an AND element and a ring counter-divider, a sort switch The work, and the number of busy counters are reversible, while the output of the ring divider counter through normally closed and normally open contacts of the switch of work type is connected respectively to the subtracting and summing inputs of the reversing busy number counter, and the other input of the And element is connected to the input of the definition unit busy and through other pairs of normally closed and normally open contacts, the switch of the type of work is connected respectively to the summing and subtracting inputs of the reversible counter h weakly bonded Tille. The drawing shows a structural electrical circuit of the proposed device. The device for monitoring the duration of the device's use of the conversational path contains the monitored device 1 of the conversational path of the ATS, normally open contact 2 of the response relay, the generator of 3 pulses, element 4, ring counter-divider 5, block 6 determining the occupancy, counter 7 of the number of occupations, element OR 8, switch 9 kind of work. The device works as follows. The block 6 for determining occupancy controls the flow of signals through the normally open contact 2 of the response relay. If during the monitoring period not a single call subscriber response is registered (i.e., the response relay has never been triggered), an alarm is sent from the occupancy determination unit b through the OR 8 element, and thus the monitored device 1 is recognized as faulty . In this case, the proposed device works the same as known. If during the monitoring period, at least once, the response relay has been triggered, then through its normally open contact 2 a signal is given to block 6, and therefore the alarm signal by the occupancy determination unit 6 will not be issued in this case. Each response of the response relay and the closure of its contact 2 (normally open) is accompanied by a signal to the summing input of the number 7 busy counter. Thus, data on the number of conversations that have occurred are recorded at this counter input. At the same time, through a normally open contact 2 during the entire conversation, a signal is sent to the input of element AND 4. At element 4, a generator of 3 pulses is used to register the total duration of the incoming signals (i.e., the total duration of conversations T) and divide the values of T by the preselected value of a certain time interval T. The number of pulses emitted from the output of the ring counter of divider 5 to the subtracting input of counter 7 of the number of dates is equal to the ratio T / t. Suppose that ie controlled payphone 1 n conversations occurred with an average duration of one tcp conversation. In this case, the summing input of the counter 7 of the number of occupations receives n signals, and the subtracting input 1 of signals. The difference d of the number of signals arriving at the summing and subtracting inputs of counter 7 of the number of occupations is determined from the expression (1 -) (1) The magnitude of the boundary time interval Г in advance is equal to 1, so that it is somewhat less than the normal average length

Claims (1)

DEVICE DURATION DURATION MONITORING DEVICE FOR CONTROLLING TALK DEVICE, containing a response relay, through normally open contacts of which a common bus is connected to the input of the occupancy determination unit, the number of occupation counter and the OR element, the inputs of which are connected to the outputs of the occupancy determination unit and the number of occupation counter, and the output the OR element is the output of the device, characterized in that, in order to improve the accuracy of the control, a pulse generator, an And element and a ring counter divider are inserted in series the type of work switch, and the number of occupation counter is reversed, while the output of the ring divider counter through normally closed and normally open contacts of the type of work switch is connected respectively to the subtracting and summing inputs of the reversing number of occupation counter, and the other input of the And element is connected to the input of the determination unit employment and through other pairs of normally closed and normally open contacts of the switch of the kind of work g is connected respectively to the summing and subtracting inputs on the number of sessions counter.