Arc light detection system

Abstract

The utility model provides an arc light detection system, and belongs to the field of mechanical hazard detection. The arc light detection system comprises a light sensor module, an electromagnetic sensor module, a comparator module, an AND gate module, an OR gate module, a control module and an alarm module. The optical sensor module and the electromagnetic sensor module are arranged in the electrical equipment; the optical sensor module and the electromagnetic sensor module are both connected with the comparator module, the comparator module is connected with the AND gate module and the OR gate module, and the comparator module is further used for receiving an external reference signal; the OR gate module and the AND gate module are both connected with the alarm module, the AND gate module is connected with the control module, and the control module is connected with the alarm module. According to the invention, the accuracy of arc light detection can be improved by detecting the optical characteristics and the electromagnetic characteristics when the arc light appears.

Description

Technical Field

[0001] The present disclosure relates to the field of arc light detection, and in particular to an arc light detection system. Background Art

[0002] Arc flash is a strong electrical discharge phenomenon that often occurs in electrical equipment. It may be caused by malfunction, misoperation, insulation aging, etc. Due to its high temperature, strong light, and strong electromagnetic characteristics, it can cause serious damage to electrical equipment, causing dangerous situations such as fires and explosions, leading to power system failures and production interruptions, resulting in huge economic losses.

[0003] Nowadays, the accuracy of arc light detection is low, and it is easy to produce false alarms and missed alarms. Therefore, the emergence of a more accurate arc light detection system is of great significance. Utility Model Content

[0004] The embodiments of the present disclosure provide an arc light detection system to solve the problem of false alarms and missed alarms of arc light.

[0005] The embodiment of the present disclosure provides an arc light detection system, comprising: an optical sensor module, an electromagnetic sensor module, a comparator module, an AND gate module, an OR gate module, a control module, and an alarm module; the optical sensor module and the electromagnetic sensor module are both arranged inside the electrical equipment;

[0006] The optical sensor module and the electromagnetic sensor module are both connected to the comparator module, and the comparator module is respectively connected to the AND gate module and the OR gate module. The comparator module is also used to receive an external reference signal;

[0007] The OR gate module and the AND gate module are both connected to the alarm module, the AND gate module is connected to the control module, and the control module is connected to the alarm module.

[0008] In an exemplary embodiment of the present disclosure, the comparison module includes a first comparator and a second comparator;

[0009] A first comparator, wherein the non-inverting input terminal is connected to the light sensor module, the inverting input terminal is used to receive an external first reference signal, and the output terminals are respectively connected to the AND gate module and the OR gate module;

[0010] The second comparator has a non-inverting input terminal connected to the electromagnetic sensor module, an inverting input terminal for receiving an external second reference signal, and an output terminal connected to the AND gate module and the OR gate module respectively.

[0011] In an exemplary embodiment of the present disclosure, the alarm module includes a light alarm unit and a sound alarm unit;

[0012] The light warning unit is connected to the OR gate module and the control module respectively;

[0013] The sound alarm unit is connected to the AND gate module and the control module respectively.

[0014] In an exemplary embodiment of the present disclosure, a light warning unit includes a first switch, an indicator light, and a first thyristor;

[0015] a first switch, wherein the first end is used to be connected to the external power supply, the second end is connected to the first end of the indicator light, and the control end is connected to the control module; the first switch is a normally closed switch;

[0016] The first thyristor has an anode connected to the second end of the indicator light, a cathode connected to the ground end, and a control end connected to the OR gate module.

[0017] In an exemplary embodiment of the present disclosure, the sound alarm unit includes a second switch, a buzzer, and a second thyristor;

[0018] A second switch, wherein the first end is used to connect to the external power supply, the second end is connected to the first end of the buzzer, and the control end is connected to the control module; the second switch is a normally closed switch;

[0019] The second thyristor has an anode connected to the second end of the buzzer, a cathode connected to the ground end, and a control end connected to the AND gate module.

[0020] In an exemplary embodiment of the present disclosure, a reset switch is further included;

[0021] The reset switch is connected to the control module.

[0022] In an exemplary embodiment of the present disclosure, a communication module is further included;

[0023] The communication module is connected to the control module, and is also used to connect to an external terminal.

[0024] In an exemplary embodiment of the present disclosure, a differential noise reduction module is further included;

[0025] The differential noise reduction module is connected to the light sensor module and the comparator module respectively;

[0026] The differential noise reduction module includes a differential driver and a differential receiver;

[0027] Differential driver and differential receiver connections;

[0028] The differential driver is connected to the light sensor module;

[0029] The differential receiver is connected to the comparator module.

[0030] The beneficial effects of the arc light detection system provided by the embodiments of the present disclosure are:

[0031] This embodiment can comprehensively monitor abnormal conditions inside the electrical equipment by setting up an optical sensor module and an electromagnetic sensor module inside the equipment; this embodiment improves the accuracy of detection by comparing sensor data through a comparator module in combination with a reference signal; the setting of an AND gate module and an OR gate module ensures the accuracy of the alarm; overall, this embodiment improves the monitoring and alarm capabilities of abnormalities inside the electrical equipment, ensures the safe and stable operation of the equipment, and reduces the risk of failure and losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0033] Figure 1 This is a schematic diagram of the structure of an arc light detection method provided by an embodiment of the present disclosure;

[0034] Figure 2 is a structural diagram of the second arc light detection provided by an embodiment of the present disclosure;

[0035] Figure 3 is a structural diagram of the third arc light detection provided by an embodiment of the present disclosure;

[0036] Figure 4 This is a structural diagram of the fourth type of arc light detection provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] To help those skilled in the art better understand this solution, the following will clearly describe the technical solutions in the embodiments of this solution in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of this solution, not all of it. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of this solution.

[0038] Throughout the specification, claims, and accompanying figures of this solution, the term "including" and any variations thereof mean "including, but not limited to," and are intended to cover non-exclusive inclusions and are not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish between different objects, not to describe a specific order.

[0039] The following describes the implementation of the present disclosure in detail with reference to the accompanying drawings:

[0040] Figure 1This is a schematic diagram of the structure of an arc light detection system provided by an embodiment of the present disclosure. Figure 1 An arc light detection system includes: an optical sensor module 10, an electromagnetic sensor module 11, a comparator module 12, an AND gate module 13, an OR gate module 14, a control module 15 and an alarm module 16; the optical sensor module 10 and the electromagnetic sensor module 11 are both arranged inside the electrical equipment;

[0041] The optical sensor module 10 and the electromagnetic sensor module 11 are both connected to the comparator module 12, and the comparator module 12 is respectively connected to the AND gate module 13 and the OR gate module 14. The comparator module 12 is also used to receive an external reference signal;

[0042] The OR gate module 14 and the AND gate module 13 are both connected to the alarm module 16 , the AND gate module 13 is connected to the control module 15 , and the control module 15 is connected to the alarm module 16 .

[0043] In this embodiment, the optical sensor module 10 is configured to detect changes in light intensity inside electrical equipment; when arc light occurs, strong bright light is generated, so that the optical sensor module 10 receives the light intensity change information, thereby converting the light intensity change information into an electrical signal and sending it to the comparator module 12; the optical sensor module 10 can be set around or inside equipment and parts where arc light is prone to occur; such as switch cabinets, distribution boxes, transformers, cable joints, etc., or set at a location where arc light can be directly observed.

[0044] The electromagnetic sensor module 11 is configured to detect changes in the electromagnetic field inside the electrical equipment; when arc light occurs, it will produce drastic changes in the electromagnetic field, so that the electromagnetic induction module 11 receives the electromagnetic field change information, and then converts the electromagnetic field change information into an electrical signal and sends it to the comparator module 12; the electromagnetic sensor module 10 can be set around equipment and parts that are prone to arc light; such as switch cabinets, distribution boxes, transformers, cable joints, etc.

[0045] The comparator module 12 is configured to receive the electrical signal sent by the optical sensor module 10 and the electrical signal sent by the electromagnetic sensor module 11 and compare them with the corresponding reference signals. If both exceed the corresponding reference signal threshold, "1" and "1" are sent to the AND gate module 13 and the OR gate module 14; if only the electrical signal sent by the optical sensor module 10 exceeds its corresponding reference signal threshold, and the electrical signal sent by the electromagnetic sensor module 11 does not exceed its corresponding reference signal threshold, then "1" and "0" are sent to both the AND gate module 13 and the OR gate module 14; if only the electrical signal sent by the electromagnetic sensor module 11 exceeds its corresponding reference signal threshold, and the electrical signal sent by the optical sensor module 10 does not exceed its corresponding reference signal threshold, then "1" and "0" are sent to both the AND gate module 13 and the OR gate module 14; if only the electrical signal sent by the electromagnetic sensor module 11 exceeds its corresponding reference signal threshold, and the electrical signal sent by the optical sensor module 10 does not exceed its corresponding reference signal threshold, then "1" and "0" are sent to both the AND gate module 13 and the OR gate module 14; if only the electrical signal sent by the electromagnetic sensor module 11 exceeds its corresponding reference signal threshold, and the electrical signal sent by the optical sensor module 10 does not exceed its corresponding reference signal threshold.

[0046] The AND gate module is configured to output “1” when it receives two “1” signals, and output “0” otherwise;

[0047] The OR gate module is configured to output "1" when receiving at least one "1" signal, and output "0" otherwise;

[0048] When the OR gate module 14 sends a "1" to the alarm module 16 and the AND gate module 13 outputs a "0" to the alarm module, the alarm module issues a level 2 alarm;

[0049] When the OR gate module 14 sends "1" to the alarm module 16 and the AND gate module 13 also outputs "1" to the alarm module, the alarm module issues a level one alarm.

[0050] When the control module 15 receives “1” sent by the AND gate module 13 , the control module deems that an arc has occurred and sends an alarm to the alarm module.

[0051] From the above, it can be concluded that the optical sensor module 10, the electromagnetic sensor module 11, the comparator module 12, the AND gate module 13, the OR gate module 14, the control module 15 and the alarm module 16 enable the embodiment of the present disclosure to comprehensively monitor abnormal conditions inside the device; the comparator module 12 compares the sensor data in combination with the reference signal, thereby improving the accuracy of detection, and the AND gate module 13, the OR gate module 14 and the alarm module 16 ensure the accuracy of the alarm to avoid false alarms and missed alarms, which affect normal production and life.

[0052] In one embodiment of the present disclosure, reference Figure 2 , the comparison module 12 includes a first comparator 121 and a second comparator 122;

[0053] A first comparator 121 has a non-inverting input terminal connected to the optical sensor module 10 , an inverting input terminal for receiving an external first reference signal, and an output terminal connected to the AND gate module 13 and the OR gate module 14 , respectively;

[0054] The second comparator 122 has a non-inverting input terminal connected to the electromagnetic sensor module 11 , an inverting input terminal for receiving an external second reference signal, and an output terminal connected to the AND gate module 13 and the OR gate module 14 , respectively.

[0055] The alarm module 16 includes a light alarm unit 161 and a sound alarm unit 162;

[0056] The light alarm unit 161 is connected to the OR gate module 14 and the control module 15 respectively;

[0057] The sound alarm unit 162 is connected to the AND gate module 13 and the control module 15 respectively.

[0058] In this embodiment, after receiving the electrical signal from the light sensor module 10, the first comparator 121 compares it with a first reference signal. The first reference signal is determined based on the intensity of sunlight, daily lighting, and the ambient light in which the light sensor module 10 is located. The first reference signal should not be too low to avoid false alarms caused by changes in light intensity due to turning on lights or sunlight, which could cause panic among employees and disrupt their normal work and life.

[0059] When the electrical signal sent by the optical sensor module 10 exceeds the first reference signal, the first comparator 121 sends “1” to the AND gate module 13 and the OR gate module 14 ;

[0060] After receiving the electrical signal from the electromagnetic sensor module 11, the second comparator 122 compares it with a second reference signal. The second reference signal is determined based on the amplitude of daily electromagnetic field fluctuations and the amplitude of electromagnetic field fluctuations in the environment where the electromagnetic sensor module 11 is located. The second reference signal should not be too low to avoid false alarms caused by electromagnetic field fluctuations due to electronic activity of the equipment, which may cause panic among employees and affect their normal work and life.

[0061] When the electrical signal sent by the electromagnetic sensor module 11 exceeds the second reference signal, the second comparator 122 sends “1” to the AND gate module 13 and the OR gate module 14 ;

[0062] When the OR gate module receives at least one "1" sent by the first comparator 121 and the second comparator 122, it sends a "1" to the light alarm unit 161. After receiving the "1" from the OR gate module 14, the light alarm unit 161 will issue a light alarm. At this time, the light is red and flashes rapidly, and the eye-catching color and alternating light and dark of the light remind relevant personnel that there may be an arc flash.

[0063] When the OR gate module 14 receives at least one "1" sent by the first comparator 121 and the second comparator 122, but the AND gate module 13 does not receive two "1"s sent by the first comparator 121 and the second comparator 122, that is, the OR gate module 14 outputs "1" but the AND gate module outputs "0", the light alarm is triggered but the sound alarm is not triggered. This is a level 2 alarm.

[0064] When the AND gate module 13 receives "1" sent by the first comparator 121 and the second comparator 122, that is, receives two "1", the AND gate module 13 sends an electrical signal to the sound alarm unit 162; after receiving the "1" from the AND gate module 13, the sound alarm unit 162 will issue an audible alarm. At this time, the sound is rapid and has a high frequency. The sharp and rapid sound warns relevant personnel that an arc flash is very likely to occur. At this time, it is a level 1 alarm.

[0065] From the above, it can be concluded that the comparison module 12 includes a first comparator 121 and a second comparator 122; the alarm module 16 includes a light alarm unit 161 and a sound alarm unit 162; so that the utility model can detect the arc light by comparing the optical characteristics and electromagnetic characteristics when the arc light appears with the corresponding reference signals, and can allow relevant personnel to take corresponding measures through simple graded alarms to determine whether there is a dangerous situation to avoid losses caused by false alarms.

[0066] In one embodiment of the present disclosure, reference Figure 3 , the light alarm unit 161 includes a first switch 1611, an indicator light 1612 and a first thyristor 1613;

[0067] A first switch 1611 has a first end connected to an external power source, a second end connected to a first end of an indicator light 1612, and a control end connected to the control module 15; the first switch 1611 is a normally closed switch;

[0068] A first thyristor 1613, having an anode connected to the second end of the indicator light 1612, a cathode connected to the ground end, and a control end connected to the OR gate module 14;

[0069] The sound alarm unit 162 includes a second switch 1621, a buzzer 1622 and a second thyristor 1623;

[0070] A second switch 1621 has a first end connected to an external power supply, a second end connected to a first end of a buzzer 1622, and a control end connected to the control module 15; the second switch 1621 is a normally closed switch;

[0071] A second thyristor 1623 has an anode connected to the second end of the buzzer 1622 , a cathode connected to the ground end, and a control end connected to the AND gate module 13 ;

[0072] The system further includes a reset switch 17 ; the reset switch 17 is connected to the control module 15 .

[0073] Since arc light lasts for a short time, if an alarm is only given at the moment the arc light appears instead of a continuous alarm, relevant personnel may miss the alarm information, thereby delaying the opportunity to escape. Therefore, the first thyristor 1613 and the second thyristor 1623 are used in the embodiment of the present disclosure to solve this problem. The first thyristor 1613 and the second thyristor 1623 are configured to become conductive and continuously conductive after receiving a signal from the control end.

[0074] When the control terminal of the first thyristor 1613 receives the electrical signal sent by the OR gate module 14, the first thyristor 1613 changes to the conducting state. At this time, the external power supply, the first switch 1611, the indicator light 1612 and the first thyristor 1613 form a circuit. At this time, the indicator light 1612 flashes red rapidly, reminding relevant personnel that there may be an arc flash and manual judgment is required;

[0075] When the control terminal of the second thyristor 1623 receives the electrical signal sent by the AND gate module 13, the second thyristor 1623 changes to the conducting state. At this time, the external power supply, the second switch 1621, the buzzer 1622 and the second thyristor 1623 form a circuit. At this time, the buzzer 1622 emits a sharp sound, warning relevant personnel that there is a high possibility of arc flash. It is recommended to stop work immediately, move to a safe location, and return after the inspector confirms that it is safe.

[0076] After the inspector confirms that it is safe, he can press the reset switch 17. At this time, the reset switch 17 sends a reset signal to the control module 15. After receiving the reset signal from the reset switch 17, the control module 15 controls the first switch 1611 and the second switch 1621 to change from a closed state to an open state; at this time, the light alarm and the sound alarm are released; at this time, the first thyristor 1613 and the second thyristor 1623 are changed from a conductive state to a cut-off state; after a short period of continuous disconnection, the control module 15 controls the first switch 1611 and the second switch 1621 to return to the normally closed state, and the arc light detection is restarted.

[0077] From the above, it can be concluded that the anode of the first thyristor 1613 is connected to the second end of the indicator light 1612, the cathode is used to be connected to the ground end, and the control end is connected to the OR gate module 14; the anode of the second thyristor 1623 is connected to the second end of the buzzer 1622, the cathode is used to be connected to the ground end, and the control end is connected to the AND gate module 13; the arc detection system also includes a reset switch 17; the reset switch 17 is connected to the control module 15. When the present invention detects an arc, it can continue to provide light and sound alarms before the control module 15 receives the reset signal, so as to avoid the short duration of the arc causing the alarm to be short, so that relevant personnel do not notice the alarm and delay their escape opportunity. After the inspector confirms safety, the system can be initialized through the reset switch 17 to restart arc detection.

[0078] In one embodiment of the present disclosure, reference Figure 4 , also includes a communication module 18; the communication module 18 is connected to the control module 15, and the communication module 18 is also used to connect to an external terminal; it also includes a differential noise reduction module 19; the differential noise reduction module 19 is respectively connected to the optical sensor module 10 and the comparator module 12; the differential noise reduction module 19 includes a differential driver 191 and a differential receiver 192; the differential driver 191 is connected to the differential receiver 192; the differential driver 191 is connected to the optical sensor module 10; the differential receiver 192 is connected to the comparator module 12.

[0079] When the control module 15 receives “1” from the AND gate module 13 , it sends arc light occurrence information to the communication module 18 . After receiving the arc light occurrence information from the control module 15 , the communication module 18 sends an alarm message to the terminal device.

[0080] When the optical sensor module 10 receives information about changes in external light intensity, it sends an electrical signal to the differential driver 191. After receiving the electrical signal from the optical sensor module 10, the differential driver 191 generates a differential signal and sends it to the differential receiver 192. When the differential receiver 192 receives the differential signal from the differential driver 191, it converts it into a single-ended signal and sends it to the first comparator unit 121 for further processing.

[0081] As can be seen from the above, the system also includes a communication module 18, which is also used to connect to external terminals. It also includes a differential noise reduction module 19, which ensures that relevant personnel in all locations receive information about the occurrence of arc light immediately, avoiding the possibility of missing the light warning or the sound warning, and allowing them to take appropriate measures. Furthermore, the differential noise reduction module 19 reduces the interference of electromagnetic field changes caused by arc light generation on the electrical signal generated by the optical sensor module 10, thereby improving the stability and accuracy of the system.

[0082] From the above, it can be concluded that the embodiment of the present disclosure detects arc light by detecting the changes in light intensity and electromagnetic field when arc light is generated, which can effectively avoid the occurrence of false alarms and missed alarms when detecting arc light at a single angle, and can provide early warning and reduce losses; at the same time, the comparator module 12 is combined with the corresponding reference signal to compare the signals transmitted by the optical sensor module 10 and the electromagnetic sensor module 11, thereby improving the accuracy of arc light detection.

[0083] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. An arc light detection system, characterized in that: include: An optical sensor module, an electromagnetic sensor module, a comparator module, an AND gate module, an OR gate module, a control module, and an alarm module; the optical sensor module and the electromagnetic sensor module are both arranged inside the electrical equipment; The optical sensor module and the electromagnetic sensor module are both connected to the comparator module, and the comparator module is respectively connected to the AND gate module and the OR gate module. The comparator module is also used to receive an external reference signal; The OR gate module and the AND gate module are both connected to the alarm module, the AND gate module is connected to the control module, and the control module is connected to the alarm module.

2. An arc light detection system according to claim 1, characterized in that: The comparison module includes a first comparator and a second comparator; The first comparator has a non-inverting input terminal connected to the optical sensor module, an inverting input terminal for receiving an external first reference signal, and an output terminal connected to the AND gate module and the OR gate module respectively; The second comparator has a non-inverting input terminal connected to the electromagnetic sensor module, an inverting input terminal for receiving an external second reference signal, and an output terminal connected to the AND gate module and the OR gate module respectively.

3. The arc light detection system according to claim 1, wherein: The alarm module includes a light alarm unit and a sound alarm unit; The light alarm unit is connected to the OR gate module and the control module respectively; The sound alarm unit is connected to the AND gate module and the control module respectively.

4. An arc light detection system as claimed in claim 3, characterized in that: The light warning unit includes a first switch, an indicator light and a first thyristor; The first switch has a first end connected to an external power supply, a second end connected to the first end of the indicator light, and a control end connected to the control module; the first switch is a normally closed switch; The first thyristor has an anode connected to the second end of the indicator light, a cathode connected to the ground end, and a control end connected to the OR gate module.

5. The arc light detection system according to claim 3, wherein: The sound alarm unit includes a second switch, a buzzer and a second thyristor; The second switch has a first end connected to an external power supply, a second end connected to the first end of the buzzer, and a control end connected to the control module; the second switch is a normally closed switch; The second thyristor has an anode connected to the second end of the buzzer, a cathode connected to the ground end, and a control end connected to the AND gate module.

6. The arc light detection system according to claim 1, wherein: Also includes a reset switch; The reset switch is connected to the control module.

7. An arc light detection system according to claim 1, characterized in that: Also included is a communication module; The communication module is connected to the control module, and is also used to connect to an external terminal.

8. The arc light detection system according to claim 1, wherein: Also includes a differential noise reduction module; The differential noise reduction module is connected to the light sensor module and the comparator module respectively; The differential noise reduction module includes a differential driver and a differential receiver; The differential driver is connected to the differential receiver; The differential driver is connected to the optical sensor module; The differential receiver is connected to the comparator module.

Images