RU2072561C1 - Warning device - Google Patents

Abstract

FIELD: systems and devices used for warning about electrical appliances and devices left alive without supervision. SUBSTANCE: warning device has set of main current-consumption sensors and warning unit; in addition, it is provided with correction unit, delay unit, and set of additional current-consumption sensors; due to such an arrangement, signal indicating ON-state of periodically turned-on current consumer is shaped even during intervals. EFFECT: provision for warning about ON-state of periodically turned-on power consumers under any operating conditions. 1 dwg

Description

 The invention relates to signaling devices and can be used to create signaling devices warning about unconnected electrical appliances left in a room.

 A device for signaling unconnected devices in the in-house automation system "Module-signal-K" is known (Technical description US 127.00.00 TO, NPO Znanie, 246042, Gomel, a / h 4).

 This device has a block of current consumption sensors and an alarm block (light and sound), the signals of which will notify about the lighting bulbs in the apartment (one sensor) or other electricity consumers (another sensor).

 The disadvantage of this device is the inability to signal the presence of periodically turning on electrical consumers (iron, electric heater, etc.) at the time of a pause in their work, which reduces the reliability of the alarm about the presence of working electrical appliances.

 The technical result consists in eliminating this drawback.

 This result is achieved by the fact that a compensation unit, a delay unit and a block of additional current consumption sensors, each of which is installed in the power supply circuit of periodically turning on power consumers that do not need to be disconnected from the mains, are introduced into the signal device containing the main power consumption sensor block and the alarm block; The main current sensors of the unit are installed in the common power circuits, and their outputs are connected to the positive input of the compensation unit, the negative input of which is connected n to the outputs of the additional sensors of current consumption of the unit, and the output is connected to the inputs of the alarm unit directly and through the delay unit.

 The block diagram of the device shown in the drawing. Block 1 of the main sensors of current consumption contains current consumption sensors, each of which consists, for example, of a ferrite ring with a winding through which a phase wire passes, through which current flows after the meter in the corresponding circuits (one, two, three circuits, etc. circuits correspond to one, two, three, etc. sensors). Block 2 additional current sensors contains consumption sensors of the same design. Through their ferrite rings, phase wires of power supply for refrigerators, air conditioners, etc. the work of which should not signal the left turned on consumers. The main sensors are connected to the positive inputs of the compensation unit 3, and additional to negative. The output of the compensation unit 3 is connected to the input of the signaling unit 4, at the output of which the signal sources are included: sound 5 and light 6, signaling the left switched on electrical consumers. The indicator 7 signals the inclusion of the entire device in operation. The normally closed contact 8, installed in the doors, serves to close the supply circuit of the sound signal of source 5 in the signaling unit 4 when the door is opened.

 The output of the compensation unit 3 is also connected to the input of the amplifier 9, the output of which is connected to the input of the threshold device 10. The output of the threshold device is connected to the input of the delay unit 11, the output of which is connected to the second input of the alarm unit 4. On switched on high-power consumers or on (or recently turned off no more than the period of automatic shutdown) of automatically periodically turning on consumers is indicated by indicator 12. Amplifier 9 has a gain control and a delay unit 11, the delay time controller.

 The device operates as follows.

 If the room has turned on consumers in the main sensors 1, installed after the electricity meter in the corresponding circuits, there is voltage. These signals are fed to the positive inputs of the compensation unit and then, summing up, cause the indicator 6 to turn on.

 While indoors, you can always judge the presence of power consumers turned on. When using the refrigerator, air conditioning, etc. the electric current consumed by them flows through the main and additional sensors of blocks 1 and 2.

 Since these signals are fed to the opposite inputs of the compensation unit 3, they (signals) are subtracted, and the signaling unit 3 does not respond to these signals.

 When the front door is opened, contact 8 opens, an enable signal is supplied to turn on the sound signal by source 5. At the same time, indicator 6 continues to light when the room has turned on power consumers. When the consumers are turned off, indicator 6 goes off and the audio signal stops.

 If a large power consumer that automatically switches on and off does not have an additional sensor (iron, electric heater, etc.) is turned on, then a sufficiently large signal from compensation unit 3 is amplified to a certain value by amplifier 9 (the signal value from its input is set manually gain control, knowing the power of automatically periodically turning on power consumers), is fed to the input of a threshold device 10, from the output of which a signal appears only when this power is turned on th electroconsumer. In this case, the delay unit 11 is activated, and a signal is supplied from it to the second input of the alarm unit 4. At the same time, the light indication 6 and 12 are triggered. When the output door of the room is opened, contact 8 opens and an audible 5 alarm is triggered. If, when the door is opened, this consumer is automatically turned off (but the plug is inserted into the power outlet), since the delay unit 11 continues for some time (at least the turn-off time of this device is set manually), from its output give a signal sufficient to trigger sound 5 and light 12 signals of the alarm unit 4, then the outgoing one will receive information about the consumers included in the network and take measures to turn it off from the power supply.

 The proposed device allows you to obtain reliable information about the included consumers of various capacities, including automatically turning on and off, including the mode of their automatic shutdown during normal operation. The proposed design provides increased reliability of the information received, as it carries out watchdog functions with respect to those automatically switched on and off powerful power consumers that must be disconnected from the network when a person leaves the room.

 The use of the proposed device increases the fire safety of the premises, provides significant energy savings.

Claims (1)

 A signal device comprising a block of basic current consumption sensors and an alarm unit, characterized in that a compensation unit, a delay unit and a block of additional current consumption sensors are inserted into it, each of which is installed in the power circuit of periodically turning on power consumers that do not require disconnecting them from the mains, the main current sensors of the unit are installed in the common power circuits, and their outputs are connected to the positive input of the compensation unit, the negative input of which is connected to the output m additional current consumption sensor unit, and an output connected to the alarm unit inputs directly and through a delay unit.