CN219016551U - Intelligent grounding early warning device - Google Patents
Intelligent grounding early warning device Download PDFInfo
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- CN219016551U CN219016551U CN202320112880.6U CN202320112880U CN219016551U CN 219016551 U CN219016551 U CN 219016551U CN 202320112880 U CN202320112880 U CN 202320112880U CN 219016551 U CN219016551 U CN 219016551U
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Abstract
The utility model discloses an intelligent grounding early warning device which comprises a leakage potential safety hazard monitor and a leakage current sensor, wherein the leakage potential safety hazard monitor comprises a shell, a photovoltaic panel is arranged at the top of the shell, a loudspeaker and a display screen are arranged on the front surface of the shell, a leakage current sensor interface and an LED warning lamp are arranged on the side wall of the shell, a control main board and a lithium battery are arranged in the shell, and a main control chip, a charging and discharging module, a current sampling processing module, a warning lamp driving circuit and a voice module are arranged on the control main board. The intelligent grounding early warning device can detect the leakage current of the power equipment in real time, and give an alarm in real time when the leakage current of the power equipment exceeds an alarm threshold, so that the problem that potential safety hazards of electrification and leakage caused by unreliable equipment grounding cannot be found in time in the prior art can be solved, and the safety of personnel and equipment is further ensured; meanwhile, the intelligent grounding early warning device is provided with a photovoltaic and battery low-power-consumption power supply design, and is convenient to install without site power taking.
Description
Technical Field
The utility model relates to the technical field of power distribution safety monitoring, in particular to an intelligent grounding early warning device for detecting leakage current of power equipment.
Background
With the development of intelligent power grids, higher requirements are put forward on power equipment state overhaul and on-line monitoring technologies, the traditional test grounding mode is periodic detection, the grounding points are multiple and wide, particularly, the power distribution network station area is long in line and multiple in equipment, periodic detection workload is large, potential safety hazards of electrification and electric leakage caused by unreliable equipment grounding cannot be timely found, and great potential safety hazards are caused to human bodies and equipment.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an intelligent grounding early warning device convenient to install, which can solve the problem that the potential safety hazards of electrification and electric leakage caused by unreliable equipment grounding cannot be timely found in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides an intelligent grounding early warning device, it is including electric leakage potential safety hazard monitor and leakage current sensor, electric leakage potential safety hazard monitor is including the casing, the casing top is equipped with the photovoltaic board, the front of casing is equipped with the speaker and the display screen, the lateral wall of casing is equipped with leakage current sensor interface and LED warning lamp, be equipped with control mainboard and lithium cell in the casing, be equipped with main control chip on the control mainboard, charge-discharge module, current sampling processing module, warning lamp drive circuit and voice module, charge-discharge module is connected with the photovoltaic board respectively, lithium cell electricity, the display screen is connected with the main control chip electricity, leakage current sensor is used for detecting the earth leakage current of power equipment, current sampling processing module is used for carrying out the current sampling to leakage current sensor's sensing signal and carries out the processing of amplifying to the current signal that the sampling obtained, main control chip is used for when the numerical value of current signal of current sampling processing module output surpasses the warning threshold value and exports warning control signal, warning lamp drive circuit carries out the warning action according to warning control signal control LED warning lamp, voice module plays warning voice according to warning control signal.
Preferably, a wake-up button is arranged on the back of the shell, and the wake-up button is electrically connected with the main control chip.
Preferably, the side wall of the shell is also provided with an operation indicator lamp, the control main board is also provided with an indicator lamp driving circuit electrically connected with the main control chip, and the indicator lamp driving circuit is electrically connected with the operation indicator lamp.
Preferably, a dial switch for modifying the alarm threshold value is further arranged on the side wall of the shell, and the dial switch is electrically connected with the main control chip.
Preferably, the control main board is also provided with a gear switching module, and the main control chip switches the sampling gear of the current sampling processing module through the gear switching module.
Preferably, the leakage current sensor is a non-contact leakage current sensor, the leakage current sensor interface is an aviation plug interface, and the leakage current sensor is connected with an aviation plug.
Preferably, a charging interface is further arranged on the side wall of the shell, and the charging interface is electrically connected with the charging and discharging module.
Preferably, the display screen adopts an OLED display screen.
Preferably, two groups of LED warning lamps are arranged on the side wall of the shell, and the warning lamp driving circuit comprises two driving branches, and each driving branch is correspondingly connected with one group of LED warning lamps.
Preferably, the control main board is also provided with a communication module for communicating with the upper computer.
The beneficial technical effects of the utility model are as follows: the intelligent grounding early warning device can detect the leakage current of the power equipment in real time, and give an alarm in real time when the leakage current of the power equipment exceeds an alarm threshold, so that the problem that potential safety hazards of electrification and leakage caused by unreliable equipment grounding cannot be found in time in the prior art can be solved, and the safety of personnel and equipment is further ensured; meanwhile, the intelligent grounding early warning device is provided with a photovoltaic and battery low-power-consumption power supply design, and is convenient to install without site power taking.
Drawings
FIG. 1 is a schematic diagram of an intelligent grounding early warning device according to the present utility model;
fig. 2 is a functional block diagram of the intelligent grounding early warning apparatus of the present utility model.
Detailed Description
The present utility model will be further described with reference to the drawings and examples below in order to more clearly understand the objects, technical solutions and advantages of the present utility model to those skilled in the art.
As shown in fig. 1 and 2, in an embodiment of the present utility model, the intelligent grounding early warning device includes a leakage potential safety hazard monitor 100 and a leakage current sensor 200, where the leakage potential safety hazard monitor 100 may be installed by adopting a plurality of types of brackets, a magnet adsorption manner, a hoop, and the like, and the installation is convenient.
The leakage potential safety hazard monitor 100 comprises a shell 120, a photovoltaic panel 101 is arranged at the top of the shell 120, a loudspeaker 103 and a display screen 107 are arranged on the front surface of the shell 120, a leakage current sensor interface 102 and an LED warning lamp 104 are arranged on the side wall of the shell 120, a control main board and a lithium battery 106 are arranged in the shell 120, and a main control chip 110, a charging and discharging module 111, a current sampling processing module 112, a warning lamp driving circuit 114 and a voice module 113 are arranged on the control main board.
The photovoltaic panel 101, the lithium battery 106 and the charge-discharge module 111 form a power supply unit of the leakage potential safety hazard monitor 100, and the charge-discharge module 111 is electrically connected with the photovoltaic panel 101, the lithium battery 106, the display screen 107, the main control chip 110, the current sampling processing module 112, the warning lamp driving circuit 114 and the voice module 113 respectively. The leakage current sensor 200 is used for detecting the earth leakage current of the power equipment; the current sampling processing module 112 is configured to sample a current of the sensing signal of the leakage current sensor 200 and amplify the sampled current signal; the main control chip 110 is configured to output alarm control signals to the alarm lamp driving circuit 114 and the voice module 113 when the value of the current signal output by the current sampling processing module 112 exceeds an alarm threshold; the display screen 107 is electrically connected with the main control chip 110, receives current data of the main control chip 110, and displays leakage current values of the power equipment in real time; the alarm lamp driving circuit 114 is used for controlling the LED alarm lamp 104 to execute an alarm action according to the alarm control signal; the voice module 113 is used for controlling the speaker 103 to play the alarm voice according to the alarm control signal.
The intelligent grounding early warning device in the embodiment can detect the leakage current of the power equipment in real time, and give an alarm in real time when the leakage current of the power equipment exceeds the alarm threshold value, so that the problem that potential safety hazards of electrification and leakage caused by unreliable equipment grounding cannot be timely found in the prior art can be solved, and the safety of personnel and equipment is further ensured. Meanwhile, the intelligent grounding early warning device is provided with a photovoltaic and battery low-power-consumption power supply design, and is convenient to install without site power taking. The solar photovoltaic panel supplies power, has the functions of low loss, floating charge and the like, and the lithium battery provides a stable power supply.
In some preferred embodiments of the present utility model, the leakage current sensor 200 is a high-precision non-contact leakage current sensor, the leakage current sensor interface 102 is an aviation plug interface, the leakage current sensor 200 is connected to an aviation plug 201, and the connection between the leakage current sensor 200 and the current sampling processing module 112 is realized by connecting the aviation plug 201 to the leakage current sensor interface 102. The side wall of the housing 120 is further provided with a charging interface for emergency power supply and charging, and the charging interface is electrically connected with the charging and discharging module 111.
The current sampling processing module 112 includes a sampling resistor and an operational amplifier, current sampling of the sensing signal of the leakage current sensor 200 is achieved by collecting current of the sampling resistor, the collected current signal is amplified by the operational amplifier and then output to the main control chip 110, and the main control chip 110 receives the current signal output by the current sampling processing module 112 to obtain the grounding leakage current of the power equipment. In some preferred embodiments of the present utility model, the control motherboard is further provided with a gear switching module 119, the main control chip 110 correspondingly outputs different switching signals according to the leakage current of the power device, and the gear switching module 119 correspondingly modifies the sampling resistor of the current sampling processing module 112 according to the different switching signals, so as to realize the switching of sampling gears (for example, 1 gear 5mA-1.5a,2 gear 500 mA-10A).
The main control chip 110 is used as a control center of the intelligent grounding early warning device and bears the control of each functional module of the intelligent grounding early warning device. In some preferred embodiments of the present utility model, the master control chip 110 adopts an STM32L07 series single-chip microcomputer, which has low operation power consumption, low maintenance cost, and strong late expansibility.
The voice module 113 comprises a voice control MCU, a FLASH memory chip and a power amplifier. In some preferred embodiments of the utility model, the voice control MCU selects a YC686D-16SC type chip, so that the performance is stable and the cost is low; the FLASH memory chip selects GD25Q128 type chip, which has 128Mb memory space; the power amplifier selects a digital power amplifier, and the performance is stable. When the ground leakage current of the power equipment exceeds the alarm threshold, the main control chip 110 outputs an alarm control signal to the voice control MCU, and the voice control MCU invokes alarm voice information from the FLASH memory chip and controls the power amplifier to work so as to control the loudspeaker 103 to play alarm voice to prompt the staff to carry out related maintenance.
In some preferred embodiments of the present utility model, the display screen 107 is an OLED display screen, and the OLED display screen is electrically connected to the main control chip 110, so as to display status information such as a real-time leakage current value of the power device.
The warning lamp driving circuit 114 drives the LED warning lamp 104 using an NPN transistor. In some preferred embodiments of the present utility model, two sets of LED warning lamps 104 are provided on the side wall of the housing 120, and each set of LED warning lamps includes 2 LED warning lamps; the warning lamp driving circuit 114 includes two driving branches, and each driving branch is correspondingly connected to a group of LED warning lamps 104. When the earth leakage current of the power equipment exceeds the alarm threshold value, the main control chip 110 outputs two paths of alarm control signals to two driving branches simultaneously, and each driving branch correspondingly drives a group of LED alarm lamps 104 to flash according to the alarm control signals so as to prompt a worker to carry out related maintenance. By separately controlling the two groups of LED warning lamps 104 through two paths of single lamps, the circuit stability can be improved, and the stability of the intelligent grounding early warning device is further enhanced.
In some preferred embodiments of the present utility model, a dial switch 118 for modifying the alarm threshold is further disposed on the sidewall of the housing 120, and the dial switch 118 is electrically connected to the main control chip 110. The user inputs an operation instruction for modifying the alarm threshold through the dial switch 118, the main control chip 110 modifies the alarm threshold according to the operation instruction, compares the alarm threshold with the ground leakage current of the power equipment by using the new alarm threshold, and outputs an alarm control signal when the ground leakage current of the power equipment exceeds the new alarm threshold. The alarm threshold is adjustable in site, and can be suitable for the grounding early warning of different power equipment.
In some preferred embodiments of the present utility model, a wake-up button 117 for waking up the main control chip 110 and the display screen 107 is provided on the back surface of the housing 120, and the wake-up button 117 is electrically connected to the main control chip 110.
In some preferred embodiments of the present utility model, the side wall of the housing 120 is further provided with an operation indicator 105, and the control motherboard is further provided with an indicator driving circuit 115 electrically connected to the main control chip 110, where the indicator driving circuit 115 is electrically connected to the operation indicator 105. The indicator lamp driving circuit 115 drives the LED warning lamp 104 by using an NPN triode, and after the main control chip 110 is awakened, the IO port of the main control chip 110 outputs a high-level signal to the NPN triode of the indicator lamp driving circuit 115, and the NPN triode is turned on to light the running indicator lamp 105.
In some preferred embodiments of the present utility model, a communication module 116 for communicating with an upper computer is further disposed on the control motherboard. The main control chip 110 uploads data to the upper computer through the communication module 116, so that information data such as real-time leakage current values of the power equipment can be checked on the upper computer software.
In some preferred embodiments of the present utility model, the charging interface is a usb_micro interface, and a data pin of the usb_micro interface is connected to the voice control MCU, so that audio data can be downloaded to the FLASH memory chip through the usb_micro interface.
The foregoing is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Various equivalent changes and modifications can be made by those skilled in the art based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims shall fall within the scope of the present utility model.
Claims (10)
1. An intelligent grounding early warning device which is characterized in that: the intelligent grounding early warning device comprises a leakage potential safety hazard monitor and a leakage current sensor, wherein the leakage potential safety hazard monitor comprises a shell, a photovoltaic panel is arranged at the top of the shell, a loudspeaker and a display screen are arranged on the front face of the shell, a leakage current sensor interface and an LED warning lamp are arranged on the side wall of the shell, a control main board and a lithium battery are arranged in the shell, a main control chip, a charging and discharging module, a current sampling processing module, a warning lamp driving circuit and a voice module are arranged on the control main board, the charging and discharging module is respectively electrically connected with the photovoltaic panel and the lithium battery, the display screen is electrically connected with the main control chip, the leakage current sensor is used for detecting grounding leakage current of the power equipment, the current sampling processing module is used for conducting current sampling on sensing signals of the leakage current sensor and amplifying processing on the sampled current signals, the main control chip is used for outputting warning control signals when the values of the current signals output by the current sampling processing module exceed a warning threshold value, the warning lamp driving circuit controls the LED warning lamp to execute warning actions according to the warning control signals, and the voice module controls the loudspeaker to play warning sounds.
2. The intelligent grounding pre-warning apparatus of claim 1, wherein: and the back of the shell is provided with a wake-up button which is electrically connected with the main control chip.
3. The intelligent grounding pre-warning apparatus of claim 2, wherein: and the side wall of the shell is also provided with an operation indicator lamp, the control main board is also provided with an indicator lamp driving circuit electrically connected with the main control chip, and the indicator lamp driving circuit is electrically connected with the operation indicator lamp.
4. The intelligent grounding pre-warning apparatus of claim 1, wherein: and a dial switch for modifying the alarm threshold value is further arranged on the side wall of the shell, and the dial switch is electrically connected with the main control chip.
5. The intelligent grounding pre-warning apparatus of claim 4, wherein: and the control main board is also provided with a gear switching module, and the main control chip switches the sampling gear of the current sampling processing module through the gear switching module.
6. The intelligent grounding pre-warning apparatus of claim 1, wherein: the leakage current sensor adopts a non-contact leakage current sensor, the leakage current sensor interface is an aviation plug interface, and the leakage current sensor is connected with an aviation plug.
7. The intelligent grounding pre-warning apparatus of claim 6, wherein: and a charging interface is further arranged on the side wall of the shell and is electrically connected with the charging and discharging module.
8. The intelligent grounding pre-warning apparatus of claim 1, wherein: the display screen adopts an OLED display screen.
9. The intelligent grounding pre-warning apparatus of claim 1, wherein: two groups of LED warning lamps are arranged on the side wall of the shell, and the warning lamp driving circuit comprises two driving branches, and each driving branch is correspondingly connected with one group of LED warning lamps.
10. The intelligent grounding pre-warning apparatus of any one of claims 1-9, wherein: and the control main board is also provided with a communication module for communicating with the upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320112880.6U CN219016551U (en) | 2023-01-17 | 2023-01-17 | Intelligent grounding early warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320112880.6U CN219016551U (en) | 2023-01-17 | 2023-01-17 | Intelligent grounding early warning device |
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| Publication Number | Publication Date |
|---|---|
| CN219016551U true CN219016551U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320112880.6U Active CN219016551U (en) | 2023-01-17 | 2023-01-17 | Intelligent grounding early warning device |
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| Country | Link |
|---|---|
| CN (1) | CN219016551U (en) |
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2023
- 2023-01-17 CN CN202320112880.6U patent/CN219016551U/en active Active
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