DC electric leakage intelligent alarm terminal for industrial equipment

Abstract

The utility model discloses a direct current electric leakage intelligent alarm terminal for industrial equipment, comprising an alarm terminal body, a microprocessor is integrated in the alarm terminal body, the microprocessor is connected with a detection circuit and an alarm circuit, the microprocessor is used for processing and analyzing digital signals and determining whether direct current electric leakage exists, and the alarm circuit is connected with the detection circuit and the alarm circuit. After electric leakage is determined, the alarm circuit is controlled to give an alarm; the detection circuit comprises a direct current voltage acquisition module, a direct current acquisition module, a signal amplification module, an A / D conversion module and a filtering module, the alarm circuit comprises a buzzer, an LED alarm lamp, a wireless communication module and a voice broadcast module, when the microprocessor judges that direct current electric leakage exists, the microprocessor controls the buzzer and the LED alarm lamp to send out alarm signals, and the voice broadcast module broadcasts the alarm signals. The microprocessor is connected with the wireless communication module, alarm information is transmitted to an upper computer through the wireless communication module, and the voice broadcast module is controlled to carry out voice alarm when the microprocessor judges that direct-current electric leakage exists.

Description

Technical Field

[0001] This utility model relates to the field of industrial equipment safety monitoring technology, specifically to a DC leakage current intelligent alarm terminal for industrial equipment. Background Technology

[0002] In industrial production, DC power supply systems are widely used in various industrial equipment, such as industrial automated production lines, power electronic devices, and DC motor drive systems, due to their advantages such as stable voltage and ease of control. However, during the operation of DC power supply systems, DC leakage can easily occur due to factors such as insulation aging caused by long-term operation of equipment, and the influence of environmental humidity and dust. DC leakage not only wastes electrical energy but can also cause equipment failure and, in severe cases, even lead to electric shock accidents, threatening the lives of workers.

[0003] Therefore, some researchers have designed and manufactured DC leakage current detection and alarm devices for industrial equipment. However, most existing industrial DC leakage current detection devices adopt a simple resistive voltage divider principle, judging the presence of leakage current by detecting changes in the resistance of the line to ground. This detection method has low accuracy and cannot detect minute leakage currents in a timely and accurate manner, easily leading to the accumulation and amplification of faults. Moreover, traditional detection devices have poor anti-interference capabilities, and in industrial environments with significant electromagnetic interference, false alarms or missed alarms are prone to occur, failing to meet the high accuracy and reliability requirements of industrial production for leakage current detection. Furthermore, some existing leakage current detection devices have limited functionality, only performing simple leakage current detection, lacking intelligent alarm and data processing functions. They cannot provide real-time feedback of leakage current information to personnel, nor can they store and analyze leakage current data, hindering effective monitoring and management of the safe operation of industrial equipment. Therefore, there is an urgent need for a terminal device capable of high-precision detection of DC leakage current, with strong anti-interference capabilities and intelligent alarm functions, to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this utility model is to provide a DC leakage current intelligent alarm terminal for industrial equipment, which aims to improve the problems of low detection accuracy, poor anti-interference ability and single function of existing DC leakage current detection devices.

[0005] This utility model is implemented as follows:

[0006] An intelligent DC leakage current alarm terminal for industrial equipment includes an alarm terminal body. The alarm terminal body integrates a microprocessor connected to a detection circuit and an alarm circuit. The microprocessor processes and analyzes digital signals to determine the presence of DC leakage current and, upon confirmation of leakage, controls the alarm circuit to sound an alarm. The detection circuit includes a DC voltage acquisition module, a DC current acquisition module, a signal amplification module, an A / D conversion module, and a filtering module. The DC voltage acquisition module and the DC current acquisition module are used to acquire voltage and current signals from the DC power supply system of the industrial equipment, respectively. The signal amplification module is used to process the acquired voltage and current signals. The signal is amplified, and the A / D conversion module converts the amplified analog signal into a digital signal and transmits it to the microprocessor. The filtering module is located between the signal amplification module and the A / D conversion module to filter the amplified signal and remove interference signals. The alarm circuit includes a buzzer, an LED warning light, a wireless communication module, and a voice broadcast module. When the microprocessor detects a DC leakage, it controls the buzzer and LED warning light to emit alarm signals and transmits the alarm information to the host computer via the wireless communication module. When the microprocessor detects a DC leakage, it controls the voice broadcast module to issue a voice alarm.

[0007] Preferably, the alarm terminal body has a control panel on the front, and a display screen is provided above the control panel. The display screen is electrically connected to the microprocessor and is used to display the collected voltage and current data and leakage alarm information.

[0008] Preferably, the LED warning light is located on the front edge of the alarm terminal body, and the buzzer is located on the top of the alarm terminal body. An antenna is located in the middle of the top of the alarm terminal body, and the antenna is used in conjunction with the wireless communication module.

[0009] Preferably, the alarm terminal body has multiple connecting wires on its side, and the ends of the connecting wires are provided with wire clamps for connecting to the DC power supply system of industrial equipment.

[0010] Preferably, the wireless communication module includes one or more combinations of a Wi-Fi module, a Bluetooth module, or a 4G module; the signal amplification module employs a multi-stage amplification circuit, which includes a pre-amplifier circuit and a main amplifier circuit, for effectively amplifying the acquired weak signal.

[0011] Preferably, the microprocessor of the alarm terminal body is also connected to a power module and a storage module. The power module is used to supply power to the entire intelligent alarm terminal, and the storage module is used to store the collected voltage and current data and leakage alarm records.

[0012] Preferably, the outer shell of the alarm terminal body is made of insulating and flame-retardant material, and the surface of the alarm terminal body is provided with a waterproof coating.

[0013] Preferably, it also includes a support rod and a mounting base, the support rod and the mounting base are rotatably connected, the rear end of the alarm terminal body is provided with a sleeve joint, the sleeve joint is sleeved on the support rod, and the side of the sleeve joint is provided with a clamping knob, the clamping knob abuts against the support rod.

[0014] Preferably, the support rod has an adapter at its bottom end, a shaft in the middle of the adapter, and a pressure cap on the shaft.

[0015] Preferably, the mounting base has multiple countersunk holes, and the bottom of the mounting base has a support rod. The end of the support rod has a connector, and the middle of the connector has a through hole. The shaft passes through the through hole, and the pressure cap is located at the end of the shaft that passes through the through hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model, through a DC voltage acquisition module and a DC current acquisition module, can acquire voltage and current signals of the DC power supply system of industrial equipment in real time. The signals are processed through a signal amplification module, a filtering module, and an A / D conversion module, improving detection accuracy and anti-interference capability. The microprocessor analyzes and judges the processed signals, accurately detecting DC leakage. Alarm information is transmitted to the host computer via a buzzer and LED warning light in the alarm circuit, and simultaneously through a communication module, realizing intelligent leakage alarm and remote monitoring functions. The display screen allows staff to view equipment operating data and alarm information in real time.

[0018] 2. This utility model facilitates the installation of the alarm terminal body by setting up an installation base and a support rod. Furthermore, the support rod and the installation base are rotatably connected, which facilitates the tilt angle adjustment of the alarm terminal body and greatly enhances the flexible use of the alarm terminal body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the alarm terminal body of this utility model from a front-end oblique tilt angle;

[0021] Figure 3 This is a schematic diagram of the alarm terminal body of this utility model from a rear-end oblique downward view.

[0022] Figure 4 This is a structural block diagram of the internal structure of the alarm terminal body of this utility model;

[0023] Figure 5 This is a structural block diagram of the detection circuit of this utility model;

[0024] Figure 6 This is a structural block diagram of the alarm circuit of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the support rod of this utility model;

[0026] Figure 8 This is a structural schematic diagram of the mounting base of this utility model.

[0027] In the diagram: 1. Alarm terminal body; 11. Control panel; 12. LED warning light; 13. Display screen; 14. Antenna; 15. Connecting wire; 16. Wire clamp; 17. Buzzer; 18. Socket; 19. Clamping knob; 2. Support rod; 21. Adapter; 22. Shaft; 23. Pressure cap; 3. Mounting base; 31. Countersunk hole; 32. Support rod; 33. Connector; 34. Through hole. Detailed Implementation

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0030] Example 1

[0031] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, an intelligent DC leakage current alarm terminal for industrial equipment includes an alarm terminal body 1. The alarm terminal body 1 integrates a microprocessor, which is connected to a detection circuit and an alarm circuit. The microprocessor processes and analyzes digital signals to determine if a DC leakage current exists, and controls the alarm circuit to sound an alarm upon confirmation of leakage. The detection circuit includes a DC voltage acquisition module, a DC current acquisition module, a signal amplification module, an A / D conversion module, and a filtering module. The DC voltage acquisition module and the DC current acquisition module are used to acquire the voltage and current signals of the DC power supply system of the industrial equipment, respectively. The signal amplification module is used to process the acquired voltage and current signals. The signal is amplified, and the A / D conversion module converts the amplified analog signal into a digital signal and transmits it to the microprocessor. The filtering module is located between the signal amplification module and the A / D conversion module to filter the amplified signal and remove interference signals. The alarm circuit includes a buzzer 17, an LED warning light 12, a wireless communication module, and a voice broadcast module. When the microprocessor detects a DC leakage, it controls the buzzer 17 and the LED warning light 12 to emit alarm signals and transmits the alarm information to the host computer through the wireless communication module. When the microprocessor detects a DC leakage, it controls the voice broadcast module to issue a voice alarm.

[0032] like Figure 2 and Figure 3As shown, the alarm terminal body 1 has a control panel 11 on its front side, which is used to control the entire alarm terminal and facilitate its use. Above the control panel 11 is a display screen 13, which is electrically connected to the microprocessor and displays the collected voltage and current data, as well as leakage alarm information. An LED warning light 12 is located on the edge of the front of the alarm terminal body 1 and is used to issue a warning when leakage is detected. A buzzer 17 is located at the top of the alarm terminal body 1, and the LED warning light 12, in conjunction with the buzzer 17, is used to issue a warning when leakage is detected. An antenna 14 is located at the center of the top of the alarm terminal body 1, and the antenna 14 is used in conjunction with a wireless communication module. Multiple connecting wires 15 are located on the side of the alarm terminal body 1, with wire clips 16 at the ends of the connecting wires 15 for connecting to the DC power supply system of industrial equipment, facilitating leakage detection of the DC power supply system of the industrial equipment. The wireless communication module includes one or more combinations of Wi-Fi, Bluetooth, or 4G modules; the signal amplification module employs a multi-stage amplification circuit, including a pre-amplifier circuit and a main amplifier circuit, used to effectively amplify the acquired weak signals. The microprocessor of the alarm terminal body 1 is also connected to a power supply module and a storage module. The power supply module provides power to the entire intelligent alarm terminal, and the storage module stores the acquired voltage and current data, as well as leakage alarm records. The outer shell of the alarm terminal body 1 is made of insulating and flame-retardant material, and the surface of the alarm terminal body 1 is coated with a waterproof layer, improving the flame-retardant and waterproof effects of the alarm terminal body 1 and extending the service life of the entire alarm terminal.

[0033] Example 2

[0034] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, an intelligent DC leakage current alarm terminal for industrial equipment includes an alarm terminal body 1. The alarm terminal body 1 integrates a microprocessor, which is connected to a detection circuit and an alarm circuit. The microprocessor processes and analyzes digital signals to determine if a DC leakage current exists, and controls the alarm circuit to sound an alarm upon confirmation of leakage. The detection circuit includes a DC voltage acquisition module, a DC current acquisition module, a signal amplification module, an A / D conversion module, and a filtering module. The DC voltage acquisition module and the DC current acquisition module are used to acquire the voltage and current signals of the DC power supply system of the industrial equipment, respectively. The signal amplification module is used to process the acquired voltage and current signals. The signal is amplified, and the A / D conversion module converts the amplified analog signal into a digital signal and transmits it to the microprocessor. The filtering module is located between the signal amplification module and the A / D conversion module to filter the amplified signal and remove interference signals. The alarm circuit includes a buzzer 17, an LED warning light 12, a wireless communication module, and a voice broadcast module. When the microprocessor detects a DC leakage, it controls the buzzer 17 and the LED warning light 12 to emit alarm signals and transmits the alarm information to the host computer through the wireless communication module. When the microprocessor detects a DC leakage, it controls the voice broadcast module to issue a voice alarm.

[0035] like Figure 2 and Figure 3As shown, the alarm terminal body 1 has a control panel 11 on its front side, which is used to control the entire alarm terminal and facilitate its use. Above the control panel 11 is a display screen 13, which is electrically connected to the microprocessor and displays the collected voltage and current data, as well as leakage alarm information. An LED warning light 12 is located on the edge of the front of the alarm terminal body 1 and is used to issue a warning when leakage is detected. A buzzer 17 is located at the top of the alarm terminal body 1, and the LED warning light 12, in conjunction with the buzzer 17, is used to issue a warning when leakage is detected. An antenna 14 is located at the center of the top of the alarm terminal body 1, and the antenna 14 is used in conjunction with a wireless communication module. Multiple connecting wires 15 are located on the side of the alarm terminal body 1, with wire clips 16 at the ends of the connecting wires 15 for connecting to the DC power supply system of industrial equipment, facilitating leakage detection of the DC power supply system of the industrial equipment. The wireless communication module includes one or more combinations of Wi-Fi, Bluetooth, or 4G modules; the signal amplification module employs a multi-stage amplification circuit, including a pre-amplifier circuit and a main amplifier circuit, used to effectively amplify the acquired weak signals. The microprocessor of the alarm terminal body 1 is also connected to a power supply module and a storage module. The power supply module provides power to the entire intelligent alarm terminal, and the storage module stores the acquired voltage and current data, as well as leakage alarm records. The outer shell of the alarm terminal body 1 is made of insulating and flame-retardant material, and the surface of the alarm terminal body 1 is coated with a waterproof layer, improving the flame-retardant and waterproof effects of the alarm terminal body 1 and extending the service life of the entire alarm terminal.

[0036] like Figure 1 and Figure 3 As shown, it also includes a support rod 2 and a mounting base 3. The support rod 2 and the mounting base 3 are rotatably connected. This structure facilitates the adjustment of the tilt angle of the alarm terminal body 1 by rotating the support rod 2. The rear end of the alarm terminal body 1 is provided with a socket joint 18, which is sleeved on the support rod 2. The socket joint 18 has a clamping knob 19 on its side, which abuts against the support rod 2. The socket joint 18 and the clamping knob 19 facilitate the stable installation of the alarm terminal body 1 on the support rod 2, ensuring the stable use of the alarm terminal body 1.

[0037] like Figure 7 As shown, the bottom end of the support rod 2 is provided with an adapter 21, the middle part of the adapter 21 is provided with a shaft 22, and the shaft 22 is provided with a pressure cap 23; the adapter 21 facilitates the rotatable connection between the support rod 2 and the mounting base 3, and the shaft 22 facilitates the rotatable connection between the adapter 21 and the mounting base 3.

[0038] like Figure 8As shown, the mounting base 3 has multiple countersunk holes 31, which facilitate the fixing of the mounting base 3 to its position with bolts. The bottom of the mounting base 3 has a support rod 32, and the end of the support rod 32 has a connector 33. The support rod 32, in conjunction with the connector 33, facilitates a rotatable connection with the support rod 2. The connector 33 has a through hole 34 in the middle, through which the shaft 22 passes. A pressure cap 23 is located at the end of the shaft 22 that passes through the through hole 34. This structure allows for fixing the tilt angle of the support rod 2 by tightening the pressure cap 23 and adjusting the tilt angle of the support rod 2 by loosening the pressure cap 23.

[0039] Working Principle: During operation, the DC voltage acquisition module and DC current acquisition module acquire the voltage and current signals of the industrial equipment's DC power supply system, respectively. The signal amplification module amplifies the acquired signals, and the filtering module filters the amplified signals to remove noise signals such as electromagnetic interference. The A / D conversion module converts the filtered analog signal into a digital signal and transmits it to the microprocessor. The microprocessor processes and analyzes the digital signal, using a preset leakage detection algorithm to determine if a DC leakage occurs. When a leakage is detected, the microprocessor controls the buzzer 17 to sound an alarm, and the LED warning light 12 flashes to emit a visual alarm signal. Simultaneously, the alarm information is transmitted to the host computer via the 4G module. Operators can view the specific leakage information and equipment operating data on the display screen 13.

[0040] In summary, compared with the prior art, this application, through a DC voltage acquisition module and a DC current acquisition module, can acquire the voltage and current signals of the DC power supply system of industrial equipment in real time. The signals are processed through a signal amplification module, a filtering module, and an A / D conversion module, improving detection accuracy and anti-interference capability. The microprocessor analyzes and judges the processed signals, accurately detecting DC leakage. The alarm information is transmitted to the host computer via the buzzer 17 and LED warning light 12 in the alarm circuit, and simultaneously through the communication module, realizing intelligent leakage alarm and remote monitoring functions. The display screen 13 allows staff to conveniently view the equipment's operating data and alarm information in real time.

[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A DC leakage current intelligent alarm terminal for industrial equipment, comprising an alarm terminal body (1), characterized in that, The alarm terminal body (1) integrates a microprocessor, which is connected to a detection circuit and an alarm circuit. The detection circuit includes a DC voltage acquisition module, a DC current acquisition module, a signal amplification module, an A / D conversion module, and a filtering module. The DC voltage acquisition module and the DC current acquisition module are used to acquire the voltage signal and current signal of the DC power supply system of the industrial equipment, respectively. The signal amplification module is used to amplify the acquired voltage signal and current signal. The A / D conversion module is used to convert the amplified analog signal into a digital signal and transmit it to the microprocessor. The filtering module is set between the signal amplification module and the A / D conversion module and is used to filter the amplified signal. The alarm circuit includes a buzzer (17), an LED warning light (12), a wireless communication module, and a voice broadcast module. When the microprocessor determines that there is a DC leakage, it controls the buzzer (17) and the LED warning light (12) to emit an alarm signal and transmits the alarm information to the host computer through the wireless communication module. The voice broadcast module performs a voice alarm when the microprocessor determines that there is a DC leakage.

2. The intelligent DC leakage current alarm terminal for industrial equipment according to claim 1, characterized in that, The alarm terminal body (1) has a control panel (11) on the front and a display screen (13) above the control panel (11). The display screen (13) is electrically connected to the microprocessor and is used to display the collected voltage and current data and leakage alarm information.

3. The intelligent DC leakage current alarm terminal for industrial equipment according to claim 2, characterized in that, The LED warning light (12) is located on the front edge of the alarm terminal body (1), and the buzzer (17) is located on the top of the alarm terminal body (1). An antenna (14) is located in the middle of the top of the alarm terminal body (1), and the antenna (14) is used in conjunction with the wireless communication module.

4. The intelligent DC leakage current alarm terminal for industrial equipment according to claim 3, characterized in that, The alarm terminal body (1) has multiple connecting wires (15) on its side, and the ends of the connecting wires (15) are provided with wire clips (16) for connecting to the DC power supply system of industrial equipment.

5. The intelligent DC leakage current alarm terminal for industrial equipment according to claim 1, characterized in that, The wireless communication module includes one or more combinations of a Wi-Fi module, a Bluetooth module, or a 4G module; the signal amplification module employs a multi-stage amplification circuit, which includes a pre-amplifier circuit and a main amplifier circuit, for effectively amplifying the acquired weak signal.

6. The intelligent DC leakage current alarm terminal for industrial equipment according to claim 5, characterized in that, The microprocessor of the alarm terminal body (1) is also connected to a power supply module and a storage module. The power supply module is used to supply power to the entire intelligent alarm terminal, and the storage module is used to store the collected voltage and current data and leakage alarm records.

7. The intelligent DC leakage current alarm terminal for industrial equipment according to claim 1, characterized in that, The outer shell of the alarm terminal body (1) is made of insulating and flame-retardant material, and the surface of the alarm terminal body (1) is provided with a waterproof coating.

8. A DC leakage current intelligent alarm terminal for industrial equipment according to any one of claims 1-7, characterized in that, It also includes a support rod (2) and a mounting base (3), the support rod (2) and the mounting base (3) are rotatably connected, the rear end of the alarm terminal body (1) is provided with a socket (18), the socket (18) is sleeved on the support rod (2), and the side of the socket (18) is provided with a pressing knob (19), the pressing knob (19) abuts against the support rod (2).

9. The intelligent DC leakage current alarm terminal for industrial equipment according to claim 8, characterized in that, The support rod (2) has an adapter (21) at its bottom end, a shaft (22) in the middle of the adapter (21), and a pressure cap (23) on the shaft (22).

10. A DC leakage current intelligent alarm terminal for industrial equipment according to claim 9, characterized in that, The mounting base (3) is provided with multiple countersunk holes (31), and the bottom end of the mounting base (3) is provided with a support rod (32). The end of the support rod (32) is provided with a connector (33), and the middle part of the connector (33) is provided with a through hole (34). The shaft (22) passes through the through hole (34), and the pressure cap (23) is provided at one end of the shaft (22) that passes through the through hole (34).

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