SU1034058A1 - Terminal for alarm device - Google Patents

Abstract

TERMINAL FOR ALARM DEVICE, containing serially connected, a communication unit, a control unit and an analog-to-digital converter, whose inputs and outputs are connected to a program block that is connected to a multiplexer, different in that, in order to speed the terminal , a tonnary parcel generator, a comparator and a level reference block are introduced into it, which is connected to one of the inputs of a comparator, whose outputs are connected to an analog-to-digital converter and a program block, multiplex sulfur roedinen another. the input of the comparator, the input of the tonnage generator over (the locks are connected to the program block, and the output of the tonnial parcel generator is connected to the input of the communication unit.

Description

The invention relates to alarms, in particular, to alarms, and can be used in fire alarm systems.

Fire alarm devices are known that contain a comparator for detecting abnormal signals in each of the monitored sensors, a scanning unit whose output is connected to the input of an analog-to-digital converter, the output of which is connected to the input of the operating unit, which is connected to the input of the comparator, and the outputs of the unit that controls neither connected to the input of the scanning unit and the output of the operating unit Cl

Disadvantages of the device are relatively low speed with an increase in the number of sensors of the analog signal.

The closest in technical essence to the present invention is an alarm system terminal comprising a measuring unit, a multiplexer, an analog-to-digital converter, a control unit, a communication unit connected in series, and a software unit connected by its inputs and outputs to the unit. communication, control unit, analog-to-digital converter and multiplexer.

Sensors are connected to the inputs of the alarm system terminal, and the terminal is connected to the central station and other terminals 2 by its input and output through a communication unit.

However, when several terminals are connected to the liniya line, they are sequentially polled and anomalous signals are extracted from the output data from the terminals at the central station. The time of detection of an anomalous signal is equal in this case to the time of polling the entire group of terminals, the time to process alarms at the central station console. With an increase in the number of terminals connected to the central station, the polling time of all tvornals may amount to a significant amount.

The purpose of the invention is to increase the speed of the terminal.

The goal is achieved by the fact that the terminal for an alarm device containing serially connected communication unit, control unit and analog-to-digital converter, tenant, whose inputs and outputs are connected to a software unit that is connected to the multiplexer, is entered into a tone parcel generator, comparator and unit: zaani level, which is connected to

one of the inputs of the comparator, the outputs of which are connected to the analog-to-digital converter and the software unit. the output of the multiplexer is connected to another input of the comparator, the input 5 of the generator of the tonnial parcel is connected to the nporpaMN5HOMy block, and the output of the generator of the tonnage terminal is connected to the input of the communication unit.

FIG. 1 is a block diagram.

0 terminal for alarm device; in fig. 2 and 3 are timing diagrams of the terminal for an alarm device when anomalous signals appear from

with sensors, respectively, at one and two terminals.

The terminal for the alarm device contains a group of terminals 1 connected in series with each other and with the central station 2, and the sensors 3 of the analog signal. Terminals 1, in turn, contain a multiplexer 4, a comparator 5, a level setting block b, an analog-to-digital converter 7,

5, a control unit 8, a communication unit 9, a software unit 10, and a tonnial parcel generator 11.

FIG. 2 shows time diagrams of signals from the terminal.

0 (diagram 1, from the central station (diagram II) and. The general time diagram of the signals in the S111 line). Timing diagrams show a 12-tonne signal.

5 parcels from terminal 1, signal 13. from central station 2 to turn on and lock the generator 11 to send all terminals, address signal 14 to terminal 1, sig0 nel 15 from centile station 2 to issue original data from terminal 1, signals 16 to source data output by terminal 1, signal 17 to central station 2 on shutdown

2 terminals 1, signal 18 from the central station 2 to unlock the generators 11 tone parcels of all terminals 1.

N. FIG. Figure 3 shows the time di-, signal patterns from the first term:

 la 1 (diagram 1), second terminal 1 (diagram u), central station 2 (diagram 111, and the general time diagram of the signals in the line (diagram IV)).

5 These time diagrams show the 19-ton parcel signal of the first terminal 1, the 20-ton parcel signal of all terminals 1, the address signal 22 of the first terminal 1, the signal 23 from the central station 2 to the source data from the first terminal 1, the 21 signal of the original data output the first terminal 1, the signal 25 s central

5 stations 2 to turn off the first terminal 1, the address signal 26 of the second terminal 1, the signal 27 from the central station 2 to issue source data from the second terminal 1, the signals. 28 source data, vadavae x second terminal 1,: signal 29 from central station 2 to turn off the second terminal 1. signal 30 from central station 2 to unlock generators 11 to send all the terminals 11 of the terminal 1. The terminal works as follows. In the idle mode of the terminal for the alarm device (Fig. 1), the generators 11 for sending all terminals 1 are turned off. Analog signals from the outputs of sensors 3 are fed to the inputs of multiplexer 4. Software block 10 connected to the input of multiplexer 4 causes it to sequentially turn signals from sensors 3. From the output of multiplexer 4, the expanded signals are input to the comparator 5. In comparator 5, the sequence The analog signals are compared with the reference level set at the second input of the comparator 5th output of the level setting block b. If the level of the sequence of analog signals exceeds the set reference level, then the input of program block 10 from the output of comparator 5 receives a signal at which program block 10 generates a signal / switch on generator 11 of a ton parcel tl of another output of comparator 5 a sequence of analog signals is input to analog-to-digital converter 7, where it is converted into eight-bit information signals, and from its output goes to the input of the program block 10. and is deposited in its buffer memory . The switching signal from software block 10 generates a tonnial parcel via block 9 and sends a tonnial parcel 12 (Fig. 2), which transits through other terminals 1 to the central station 2. The central station 2 selects the tonnial parcel 12 corresponding to the terminal 1 in frequency and generates a signal 13 for turning off and blocking the generators 11 for the tonnial parcel of all terminals 1 and the signal 15 for outputting the initial data from terminal 1 with the address signal 14 of that terminal 1 from which the terminal sent 12. When received by the terminal 1 ad In the control signal 8 from the central station 2, it is compared in the control unit 8 with the address given to the terminal 1 and, if the comparison shows a match, the control unit 8 issues a command to interrupt the analog-digital conversion to the software unit 10, to enable the transfer of the accumulated and last data in the form of source data 16, following the address signal 14 to the central station 2. If the address signal 14 from the central station 2 does not coincide with the address that the terminal 1 has, then it follows in transit to the following term Nalu J.. At the end of the polling of terminal 1, central station 2 issues a signal 17 to turn off the polled terminal 1 and a signal 18 to unlock the generators 11 to send all the terminals. 1, (FIG. 2) to control other ter- minals. in the period of elimination of the reasons that caused the abnormal signal changes in the disconnected terminal 1, during the period of disconnection of one terminal 1, the signals from the other terminals 1 transit through it. When a central station receives 2 two or more tonnage parcels from several terminals 1, all these parcels are immediately selected and stored, after which a Consecutive Interrogation is performed on all terminals with detected anomalies with an arbitrary polling sequence specified at Central Station 2. Consider , the operation of terminals 1 in the alarm system when two terminals 1 are issued at once with 1 tonnage parcels (Fig. 3). In this case, the tonnial parcels 19 and 20 from the two inalovs 1 come to the central station 2,. where they are allocated and stored. Thereafter, the central station 2 outputs a signal 21 to turn off and block the generators 11 of the tonnage. send all terminals 1 and perform a sequential interrogation of two ter- minals 1 with the detected anomalies. Suppose that it starts polling from the first terminal 1. In this case, the central station 2 sends the address signal 22 of the first terminal 1 and the signal 23 to output the source data from the first terminal 1. On this signal, the terminal 1 generates a signal of the 24 source data with the address signal 22. After the polling is over, the central station 2 sends out a signal 25 to turn off, the first terminal 1 and the signal 27 to issue source data from the second terminal 1 with its address signal 26. The second terminal 1 outputs the source data signals 28 from this signal. After the polling is completed, the central station 2 issues a signal 29 to turn off the second terminal 1 and

signal 30 to unblock generators 11 to send all terminals 1 to carry out coyrol over other terminals 1 at the time of eliminating the causes of abnormal changes in disconnected terminals 1. In the period of disconnection of some terminals 1, signals from other terminals 1 and from central station 2 follow through disconnected terminals 1 transit.

The use of the proposed terminal for an alarm device allows an increase in speed of 12

1--1 Ь 41..1

/ J

/ 4/5. - J | ... || ./. / J / "iS

action of the alarm device, since when an abnormal signal appears in any of the terminals, the terminal sends a signal to the central station about the presence of an anomaly and, based on this signal, the central station begins polling this terminal, which allows you to immediately detect the anomalous signals, regardless of the number of connected to the central station terminals.

The economic effect of using the invention is due to its technical features.

/four /

.. | B ".1 t

/ V / 7,

1c I t .. | I ... I i ... ih.t I .. I t1 fff tt 17 FIG. g

Claims (1)

TERMINAL FOR ALARM DEVICE, containing a serial communication unit, a control unit and an analog-to-digital converter, the inputs and outputs of which are connected to a software unit that is connected to a multiplexer, characterized in that, in order to increase the speed of the terminal, it the generator of the tone sending, a comparator and a level setting unit are introduced, which is connected to one of the inputs of the comparator, the outputs of which are connected to an analog-to-digital converter and a program unit, the multiplex output sora is connected to another. the input of the comparator, the input of the generator of the tone package is connected to the software unit, and the output of the generator of the tone package is connected to the input of the communication unit.