RU1805483C - Device of alarm signalling for several objects - Google Patents

Abstract

An alarm device for several objects is designed to signal unauthorized access to objects in which there are sensors, alarm elements, indicating devices, blocking nodes. At each object, it becomes known which of the rooms had unauthorized access. At the object where unauthorized access occurred, the signal element does not work. The device can be used to signal unauthorized access and fire for residential premises belonging to different owners and combined into a collective alarm system. 3 ill. 1 zpf

Description

The invention relates to alarm systems for unauthorized access to objects, including residential premises.

The aim of the invention is to ensure the secrecy of work and increase the information content of the device. Furthermore, it is an object of the invention to provide for blocking an alarm signal by means of a button-operated locking unit (in particular an electric bell button).

In FIG. 1 illustrates an alarm device for several objects; in Fig.2 - an example is made. ™ block node; in FIG. 3 is a timing diagram of a lock node.

An alarm device for several objects contains on the first object 1 a signal element 2, an activation unit 3 of a signal element, a sensor 4. Similarly, on the second and third objects, the corresponding elements are indicated by the numbers 5, 6. 7 (second object) and 8, 9 10

(third object). Accordingly, there are power sources 11, 12, 13, lock nodes 14, 15, 16. The second object is designated 17, and the third - 18. The device contains display nodes (19, 20, 21), buses 22-24 connecting sensors to switching nodes signal elements; control inputs of 25-27 signal elements. The power supplies 11,12,13 are connected to the signal elements 2, 5, 8. If an electric bell is used as a signal element 2, 5, 8, either an alternating or constant voltage is applied. Power sources 11, 12, 13 are connected respectively to sensors 4.7, 10. Sensor 4 is connected via bus 22 to the inputs of all display nodes 19, 20, 21 and to the inputs 30, 32 of the switching units of the signal elements 6.9. The sensor 7 is connected via a bus 23 to the inputs of all display nodes 19. 20, 21 and to the inputs 29, 33 of the switching nodes of the signal elements 3, 9. The sensor 10 is connected via a bus 24 to the inputs of all nodes

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indications 19,20,21 and to the inputs 28,31 of the switching units of the signal elements 3, 6. The locking units 14, 15, 16 are connected respectively to the sensors 4, 7,10. The switching units of the signal elements 3, 6, 9 are connected to the control inputs 25, 26, 27 of the signal elements 2,5,8,.

The switching unit of the signal element 3 can be a relay that is triggered by the signals at the inputs 28 or 29 and connects the voltage to the signal element through its contacts. The display unit 19 contains several (in this particular case i) three display elements that indicate on which object 1,17, 18 the sensor 4.7,10 was triggered.

Blocking node 14 may be a toggle switch, reed switch, relay or other circuitry that disconnects the voltage and current from the output of sensor 4 from bus 22. The same is true for blocking nodes 15,16. The display unit must be installed in a hidden place so as not to attract the attention of the intruder. The controls for the locking units must be located near the door or on the door (from the outside). An electric bell button located at the front door can be used as a control for the locking unit. In this case, you can use the special lock node described below.

Locking units 14.15,16 (Fig. 2) work from the button of the electric bell of the apartment. To lock, the button is pressed once, for 5-10 seconds, to reset the lock assembly to its original state, and then, after a pause of the same duration, the button is pressed several times, depending on the code installed on the lock code installation site. The duration of pressing the button is 1 s, and the interval is the same.

The blocking unit comprises a rectifier diode 36, a voltage reduction circuit and an integrating circuit (37,38,39), a single-shot 40; a voltage reduction circuit and an integrating circuit (41,42,43), a single vibrator 44, a lock code setting unit 45, a comparison unit 46, a delay line 48 and an AND circuit 49, an output 50 of the blocking unit.

The voltage when the ringer button is pressed passes through a diode 36 to a single-shot 40, the output of which is connected to the input of the counter 47 to reset it. The voltage when you press the call button goes to a single-shot 44, the output of which is connected to the counting input of the counter 47. The output of the counter 47 and the output

the unit for setting the lock code 45 are connected to the inputs of the unit of comparison 46. The output of the one-shot 44 is also connected to the input of the circuit AND 49, to the other input of which

the output of the delay line 48 is connected. The output of the comparison node 46 is connected to the input of the delay line 48. The output of the AND circuit 49 is connected to the input of the counter 47 to reset it.

The device operates as follows. Let lock 14 be disabled. In case of unauthorized access to the object 1, the sensor 4 is activated and the voltage goes to the display nodes 19, 20, 21, while

indication elements are activated (e.g. light bulbs or LEDs corresponding to object No. 1). In addition, the voltage from the sensor 4 is supplied to the switching units 6 and 9 of the signal elements 5 and

8. At the same time, an alarm sounds (or lights) on objects 17 and 18. People who are on objects 17 and 18, after an alarm call to the display units 20 and 21, see the indication

indicator elements that unauthorized access to object 1 has occurred, and then act according to the instructions. With authorized access to object 1, it is necessary using blocking node 14

block the alarm (disable sensor 4) ..

The lock node that is triggered by the button operates as follows.

Before leaving the object, a lock code (a number from 2 to 10 in binary code) is set using the lock code installation unit 45, which can be implemented as a set of toggle switches. When

you must enter the object, you must block the alarm system so that it does not work. To do this, the ringer button is pressed once for 5-10 seconds to reset the lock assembly.

The voltage across the capacitor 39 will reach (after 4 s) a value corresponding to the threshold of operation of the single-shot 40, the output of which sets the counter 47 to its initial state.

Single Vibrator Operation 44 from

long press of a button occurs earlier

reset counter 47

and does not affect the operation of the lock node.

After a pause, when the capacitor 39 is discharged, the button is pressed as many times as the lock code. In this case, the one-shot 44 is activated as many times as necessary and a number corresponding to the lock code is set on the counter. The output of the comparison node 46

A blocking signal appears and activates a relay that opens the contacts through which the transmitter signal passes. When a door with a lock is opened, the alarm goes off.

If the button is pressed more times than indicated in the lock code, the match signal at output 50 will disappear and the relay opening the circuit from the sensor will turn off and block will not occur. The signal 10 from the output of the comparison node 46 passes through the delay line 48 to the AND 49 circuit. When an extra pulse passes to the counter 47 (the button is pressed more times than necessary in accordance with the lock code), it 15 goes through the And 49 circuit to the reset input . counter 47,

The timing diagram (Fig. 3) illustrates the operation of the lock assembly. In FIG. 3 shows the signals at the outputs of circuit elements 20, FIG. 2 marked with the corresponding numbers on the left. Resistance Parameters. 37, 38, 41, 42, capacitors 39 and 43. As well as setting the single vibrators to the corresponding threshold, 25 will allow this time diagram to be realized. With a long first press of the button 34 at the output of the resistor 37, the voltage rises and reaches the threshold of operation of the single-shot 40, after which 30 the counter 47 is reset. Shorter presses of the button 34 do not increase the voltage at the input of the single-shot 40 to the level response threshold. The voltage at the output 35 of the resistor 41 (the input of the one-shot 44) at the first long press of the button triggers the one-shot 44, but after that the counter 47 is reset to the initial state by the signal from the one-shot 40. Short pulses of the push of the button cause the operation single vibrator 44 (Fig. 3 shows three short presses). At counter 47, a code of three is set. If code three is set on the set-up unit 45 of the blocking code 45, then the comparing unit 46 will provide a blocking signal at the output 50.

The locking unit may be implemented in various ways; on toggle switches; permanent magnet operated reed switches; optocouplers. The place of their installation must be carefully masked.

Claims (2)

The claims .1. An alarm device for several objects, containing a power source located in each room, an alarm sensor, an alarm element switching unit, the output of which is connected to the control input of the signal element, and an alarm sensor output of each object is connected to one input of the signal element switching nodes of other objects characterized in that, in order to ensure the secrecy of operation and increase the information content of the device, an indication unit and a node b are introduced into each object okirovki, the output of which is connected to the control input of the alarm sensor outputs alarm sensors all objects are connected to the respective inputs of all objects in the display unit. 2. The device according to claim 1, with the proviso that the lock assembly comprises a button, first and second integrating chains, first and second one-shots, a counter, a comparison unit, a lock code setting unit, an element delays and element And, the power supply through the button is connected to the inputs of the integrating circuits, the output of the first integrating circuit is connected to the input of the first one-shot, the output of the second integrating chain to the input of the second one-shot, the output of the first one-shot to the installation input of the counter, the output of the second one-shot a torus - to the counter input of the counter and to one input of the AND element, the output of the meter is connected to one input of the comparison unit, the output of the blocking code setting unit is connected to the other input, the output of the comparison unit is connected through the delay element to another input of the And element and is the output of the unit blocking. 3741 / IAi Ji (i; i i i. Jljljl