Method and system for safeguarding electrical devices

Abstract

A method for safeguarding electrical devices using a continuous analysis of background sound, in which power is supplied (101) to the system for safeguarding the electrical device and the correct operation of the system for safeguarding the electrical device is verified (102). In the event of incorrect operation of the system, this fact is signalled (103), preferably by means of a lighting and/or acoustic signal. In the event of correct operation of the safety system, the power of the safeguarded electrical device (5) is turned on (104), followed by a continuous analysis of the background sound, in which continuous monitoring of the background sounds is performed (105), sounds with a frequency different from the frequency of human voice are filtered out (106), the filtered out background sounds are compared to the sound patterns of human scream caused by pain and/or fear (107), and in the event of detecting conformance of the recorded sound with the pattern of human scream caused by pain and/or fear, the power is cut off (108) from the safeguarded electrical device. A system for safeguarding electrical devices comprising a sound analysing unit (2) and a module (1) connected to the sound analysing unit (2), controlling the power of the electrical device (5), in particular for emergency deactivation of the power of the electrical device (5), and at least one microphone (3) receiving background noises, connected to the sound analysing unit (2). The sound analysing unit (2) of the present system is provided with a microcomputer (2a) adjusted to store the patterns of human scream caused by pain and/or fear, and to receive data from at least one microphone (3), compare them to the patterns of human scream caused by pain and/or fear stored therein, and to convert the result of this comparison into a signal controlling the module (1) controlling the power of the electrical device (5). Moreover, the microcomputer (2a) is adjusted to verify the correct operation of the system and transmit the control signal to the module (1) controlling the power of the electrical device (5), and to automatically switch the system into a continuous analysis mode, in which continuous monitoring of background sounds is performed and sounds with a frequency different from the frequency of human voice are filtered out.

Claims

1. A method for safeguarding electrical devices using a continuous analysis of background sound, characterised in that power is supplied (101) to the system protecting the electrical device (5), the correct operation of the system for safeguarding the electrical device (5) is verified (102), wherein in the event of incorrect operation of the system, this fact is signalled (103), preferably by means of a lighting and/or acoustic signal, in the event of correct operation of the safety system, the power of the safeguarded electrical device (5) is turned on (104), followed by a continuous analysis of the background sound, in which: continuous monitoring of background sounds is performed (105), sounds with a frequency different from the frequency of human voice are filtered out (106), the filtered-out background sounds are compared (107) to the sound patterns of human scream caused by pain and/or fear, in the event of detecting conformance of the recorded sound with the pattern of human scream caused by pain and/or fear, the power is cut off (108) from the safeguarded electrical device (5).

2. The method according to claim 1, characterised in that, after cutting off the power of the safeguarded electrical device, a message is transmitted (109) to at least one predefined receiver.

3. The method according to claim 1, characterised in that universal scream patterns are used, not considering the gender, age and/or nationality of the protected individuals.

4. The method according to claim 1, characterised in that cutting off (108) the power is signalled by means of at least one lighting device.

5. The method according to claim 1, characterised in that cutting off the power is signalled by means of at least one acoustic device.

6. A system for safeguarding electrical devices for the execution of steps according to claim 1, comprising: a sound analysing unit (2) a module (1) connected to the sound analysing unit (2), controlling the power of the electrical device (5), in particular for emergency deactivation of the power of the electrical device, at least one microphone (3) receiving background noises connected to the sound analysing unit (2), wherein the sound analysing unit (2) is provided with a microcomputer (2a) adjusted to store the patterns of human scream caused by pain and/or fear, and to receive data from at least one microphone (3), compare them to the patterns of human scream caused by pain and/or fear stored therein, and to convert the result of this comparison into a signal controlling the module (1) controlling the power of the electrical device (5); characterised in that the microcomputer (2a) is adjusted to verify the correct operation of the system and transmit the control signal to the module (1) controlling the power of the electrical device (5), and to automatically switch the system into a continuous analysis mode, in which: continuous monitoring of background sounds is performed, sounds with a frequency different from the frequency of human voice are filtered out, the background sounds are compared to the sound patterns of human scream caused by pain and/or fear, in the event of detecting conformance of the recorded sound with the pattern of human scream caused by pain and/or fear, the power is cut off from the safeguarded electrical device (5).

7. The system according to claim 6, characterised in that it comprises at least one lighting device, preferably a control diode (4).

8. The system according to claim 7, characterised in that the control diode (4) is adjusted to indicate the current status of the system and/or to signal the cutting off of the power of the electrical device (5).

9. The system according to claim 1, characterised in that it comprises a programmable communication module for transmitting messages about cutting off the power of the safeguarded electrical device (5) to at least one defined receiver.

10. The system according to claim 1, characterised in that the module (1) controlling the power of the electrical device is an electronic or electromechanical module.

11. The system according to claim 1, characterised in that the microphone (3) receiving background noises is a microphone adjusted to operate in a frequency range of 20 Hz to 20 kHz.

12. The system according to claim 1, characterised in that the microphone (3) receiving background noises is a wireless microphone.

13. The system according to claim 1, characterised in that the microphone (3) receiving background noises is adjusted to communicate in the WiFi and/or Bluetooth technology

Description

DESCRIPTION OF THE DRAWINGS

[0025] The subject of the invention is shown in an embodiment in the drawing, in which:

[0026] FIG. 1 presents a flowchart of the method for safeguarding electrical devices using a continuous analysis of background sound according to the first embodiment of the invention;

[0027] FIG. 2 presents a flowchart of the method for safeguarding electrical devices using a continuous analysis of background sound according to the second embodiment of the invention;

[0028] FIG. 3 presents a layout of the system for safeguarding electrical devices according to the first embodiment of the invention;

[0029] FIG. 4 presents a layout of the system for safeguarding electrical devices according to the second embodiment of the invention.

DETAILED DESCRIPTION OF THE SOLUTION ACCORDING TO THE INVENTION

First Embodiment of the Method for Safeguarding an Electrical Device

[0030] FIG. 1 presents a flowchart of the method for safeguarding electrical devices using a continuous analysis of the background sound, in which electrical power is supplied 101 to the system for safeguarding the electrical device.

[0031] The system safeguarding an electrical device is incorporated in series in the power supply system of the electrical device 5. The system comprises a module 1 controlling the power of the electrical device 5, in particular for emergency deactivation of the power of the electrical device 5, connected to a sound analysing unit 2. Moreover, the system comprises a microphone 3 receiving background noises (a larger number of microphones can be used depending on the needs, the size of the safeguarded device, the sound detection area for the device operator and bystanders, in order to provide a full range of detection for scream sounds regardless of the size of the device), which is connected to the sound analysing unit 2. Preferably, the microphone 3 is a wireless microphone adjusted to operate in a frequency range of 20 Hz to 20 kHz. In sample embodiments of the system, the microphone 3 can be connected to the sound analysing unit 2 for the voice using WiFi or Bluetooth wireless communication standards. The sound analysing unit 2 is in turn provided with a microcomputer 2a.

[0032] After supplying power to the system, the correct operation of the system for safeguarding the electrical device is verified 102 by means of the microcomputer 2a. In the event of incorrect operation of the system, this fact is signalled 103, for example by means of a lighting and/or acoustic signal. For example by means of a control diode 4, which is lit red. At the same time, the microcomputer 2a transmits a control signal to the module 1, enabling the supply of power to the electrical device 5.

[0033] In the event of correct operation of the safety system, the power of the safeguarded electrical device 5 is in turn turned on 104 by the module 1 by means of the control signal transmitted to the module 1 by the microcomputer 2a. At the same time, the microcomputer 2a automatically switches the operation of the system into the mode of a continuous analysis of the background sound, and the control diode 4 is lit green. Continuous monitoring of background sounds from the microphone 3 is performed 105 during the analysis. Sounds with a frequency different from the frequency of human voice are filtered out 106 by means of the sound analysing unit 2. Subsequently, by means of the microcomputer 2a, the filtered-out background sounds are compared 107 to the sound patterns of human scream caused by pain and/or fear stored therein. In the event of detecting the conformance of the recorded sound with the pattern of human scream caused by pain and/or fear by the microcomputer 2a, the microcomputer 2a transmits the control signal to the module 1, which cuts off 108 the power from the safeguarded electrical device 5.

Second Embodiment of the Method for Safeguarding an Electrical Device

[0034] The execution of the method for safeguarding an electrical device proceeds as in the first embodiment, wherein after cutting off 108 the power from the safeguarded electrical device 5, a message is transmitted 109 to at least one defined receiver (for example, rescue services) by a programmable electronic communication module 6 (in another embodiment, the module can be an electromechanical module), for example using a wireless communication technology (SMS, WiFi, Bluetooth, Email). In some embodiments, the message is transmitted to additional systems providing safety.

[0035] The method and system for safeguarding electrical devices according to the invention can be used to protect individuals working with large industrial machines, as well as individuals using electrical hand tools, household appliances, which can be harmful to health or lead to the operator's death. The arrangement according to the invention can also be used in all kinds of warehouses, silos and metal containers with mechanical elements.