Intelligent induced voltage alarm device

Abstract

An intelligent induced voltage alarm device comprises a power frequency electric field sensor, a signal processing unit, a power supply unit, a sound-light alarm unit and a communication unit. The device is worn on a worker; the signal processing unit is connected with the power frequency electric field sensor and the sound-light alarm unit, field operation voltage parameters are stored in the signal processing unit, the induced voltage sensed by a human body at the moment is judged according to the electric field intensity collected by the power frequency electric field sensor, and when the induced voltage is larger than the voltage parameters built in a chip, the alarm device gives an alarm. Workers are reminded to pay attention to safety, and electric shock is prevented; the device automatically gives an alarm when inducting that the voltage is higher than the induced voltage which can be borne by a human body, so that a safety prompt function is provided for people.

Description

A smart voltage alarm device Technical Field

[0001] This invention relates to the technical field of intelligent voltage sensing alarm devices, and more specifically, to a protective device with intelligent voltage sensing audible and visual alarm. Background Technology

[0002] Currently, there are many unsafe electric shock incidents in power production caused by excessively high induced voltage, resulting in personal injury and death. To prevent more unsafe incidents caused by excessively high induced voltage, it is necessary to design and develop an intelligent induced voltage alarm device that automatically issues an alarm when it senses a voltage higher than the human body can withstand. Summary of the Invention

[0003] This invention is an intelligent voltage alarm device, which automatically issues an alarm when it senses a voltage higher than the voltage that the human body can withstand.

[0004] An intelligent voltage alarm device includes a power frequency electric field sensor, a signal processing unit, a power supply unit, an audible and visual alarm unit, and a communication unit. The device is worn by the operator. The signal processing unit is connected to the power frequency electric field sensor and the audible and visual alarm unit. The signal processing unit stores on-site operating voltage parameters. Based on the electric field strength collected by the power frequency electric field sensor, it determines the induced voltage felt by the human body. When the voltage exceeds the voltage parameter built into the chip, the alarm device will sound an alarm to remind the operator to pay attention to safety and prevent electric shock.

[0005] Furthermore, the power frequency electric field sensor is an electrodeless electric field strength sensor or an electric field strength sensor based on MEMS technology.

[0006] Furthermore, the audible and visual alarm unit consists of red, yellow, and green indicator lights and a buzzer; the audible and visual alarm commands are provided by the signal processing unit.

[0007] Furthermore, the communication unit consists of Bluetooth, WiFi, and WiGig communication modules, enabling information exchange and data sharing with the wireless communication base station of the main control center.

[0008] Furthermore, the signal processing unit stores voltage level levels to determine the level and corresponding voltage parameters for different application scenarios.

[0009] Furthermore, the voltage parameters include alarm voltage and safety voltage; when the induced voltage of a worker approaching a live conductor is less than the safety voltage, the green indicator light of the audible and visual alarm unit illuminates and the buzzer remains silent; when the induced voltage of a worker approaching a live conductor is greater than the safety voltage, the yellow indicator light of the audible and visual alarm unit illuminates and the buzzer sounds intermittently; when the induced voltage of a worker approaching a live conductor is greater than the alarm voltage, the red indicator light of the audible and visual alarm unit illuminates and the buzzer sounds continuously.

[0010] Furthermore, the voltage level is set by the supervisor at the main control center via encrypted wireless communication before on-site operations, ensuring that the device has the correct safety settings parameters during on-site operations and protecting the safety of the staff.

[0011] Furthermore, the voltage level includes five levels: the first level is 220V / 380V for residential use; the second level is 10kV; the third level is 20 / 35kV; the fourth level is 63 / 110kV; and the fifth level is 220kV.

[0012] A method for using the aforementioned intelligent voltage alarm device is characterized by: S1. Checking the alarm device, performing a self-test upon power-on, and having the buzzer sound an alarm three times, with no abnormalities detected each time; S2. Configuring the alarm device, with the main control center establishing encrypted communication with the device and setting the voltage level corresponding to the on-site work order; S3. Selecting the carrier position and orientation of the device according to the practical needs of the alarm device on-site; S5. The operator confirms that the alarm device is properly worn before commencing work; if the alarm device emits an audible warning during the work process, the operation should be stopped immediately to check for problems until the work is completed.

[0013] Furthermore, in S2, after successful setup, the main control center will send a confirmation message and all three indicator lights (red, yellow, and green) on the device will light up for 30 seconds.

[0014] The signal processing unit is connected to a power frequency electric field sensor and an audible and visual alarm unit. The signal processing unit collects information such as the human body's safe voltage level, while the power frequency electric field sensor detects the ground voltage value that the device can sense. By comparing the ground voltage value collected by the power frequency electric field sensor with the human body's safe voltage value collected in the signal processing unit, a preliminary judgment is made on the induced voltage felt by the human body. Once the sensor detects a voltage value exceeding the human body's safe voltage level, an alarm buzzer will automatically sound, alerting the wearer to the voltage level and safe distance. The beneficial effect of this invention is that the intelligent induced voltage alarm device can sense the ground voltage value of the device. When this voltage value exceeds the safe induced voltage that the human body can withstand, it will automatically sound an alarm, reminding the wearer to pay attention to the surrounding induced voltage situation and preventing electric shock accidents.

[0015] The intelligent voltage alarm device uses a voltage sensor to detect the induced voltage between the wearer and the surrounding environment. If the detected voltage exceeds the safe voltage value that the human body can withstand, a signal will be sent to trigger the alarm, alerting staff and those nearby that there is a high induced voltage in the surrounding environment and urging them to take precautions to prevent electric shock. Once the on-site staff confirms the issue, pressing the mute button on the protection device will silence the buzzer. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the device system; in the figure, 31-signal processing unit, 32-power frequency electric field sensor, 33-power supply unit, 34-audio-visual alarm unit, 35-communication unit. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] As shown in Figure 1, an intelligent voltage sensing alarm device includes a power frequency electric field sensor, a signal processing unit, a power supply unit, an audible and visual alarm unit, and a communication unit. The power frequency electric field sensor employs an electrodeless electric field strength sensor or an electric field strength sensor based on MEMS (Micro-Electro-Mechanical Systems) technology to perform power frequency electric field strength testing and transmit the results to the signal processing unit. The audible and visual alarm unit triggers an audible and visual alarm when a person wearing the alarm device accidentally enters a high field strength area. The audible and visual alarm unit consists of red, yellow, and green indicator lights and a buzzer. The audible and visual alarm commands are provided by the signal processing unit. The communication unit uses Bluetooth and Wi-Fi. The system consists of an iFi and a WiGig communication module, enabling information exchange and data sharing with the handheld mobile terminal used for maintenance and the wireless communication base station within the substation. The WiGig communication module adopts WiGig technology compliant with IEEE 802.11ad, operates in the 59GHz–64GHz frequency band, and uses Galois / CounterMode in the AES encryption algorithm for security protection, supporting a maximum transmission speed on the order of Gbit / s. The signal processing unit processes the data collected by the power frequency electric field sensor, performs audible and visual alarm diagnosis and discrimination, and exchanges information with the main control center through the communication unit.

[0019] The data processing involves determining the induced voltage of the wearer approaching a live conductor based on the data collected by the power frequency electric field sensor; the audible and visual alarm diagnostic criteria are based on the induced voltage of the wearer approaching a live conductor; and the voltage level is stored in the signal processing unit to determine the level and corresponding voltage parameters for different application scenarios.

[0020] Voltage parameters include alarm voltage and safety voltage; the voltage level is set by the supervisor at the main control center before on-site operation via encrypted wireless communication to ensure that the device has the correct safety settings parameters during on-site operation and to protect the safety of the workers.

[0021] The voltage rating system includes five levels: Level 1 is 220V / 380V for residential use; Level 2 is 10kV; Level 3 is 20 / 35kV; Level 4 is 63 / 110kV; and Level 5 is 220kV. The safe distances for each voltage level are determined by national and industry regulations.

[0022] The aforementioned audible and visual alarm diagnostic logic is as follows: when the induced voltage of a worker approaching a live conductor is less than the safe voltage, the green indicator light of the audible and visual alarm unit illuminates and the buzzer remains silent; when the induced voltage of a worker approaching a live conductor is greater than the safe voltage, the yellow indicator light of the audible and visual alarm unit illuminates and the buzzer sounds intermittently; when the induced voltage of a worker approaching a live conductor is greater than the alarm voltage, the red indicator light of the audible and visual alarm unit illuminates and the buzzer sounds continuously.

[0023] The above-mentioned results of the audible and visual alarm diagnosis and judgment are provided to the audible and visual alarm unit by the signal processing unit, so that the red, yellow and green signal lights and buzzers will take corresponding actions.

[0024] In the communication interaction between the device of the present invention and the main control center via the communication unit, the main control center interacts with the handheld mobile terminal for maintenance and the device of the present invention via a wireless communication base station. The communication unit within the device of the present invention interacts with the handheld mobile terminal for maintenance and the wireless communication base station via Bluetooth, WiFi, and WiGig wireless communication methods.

[0025] When using the alarm device in this embodiment, the following steps can be followed: S1. Check the alarm device, perform a power-on self-test, the buzzer will sound an alarm and repeat three times, and there should be no abnormalities. If the power supply is lower than the normal operating range, the user should be reminded to replace the battery. S2. Configure the alarm device, the main control center communicates with the device in encrypted form, and sets the voltage level corresponding to the on-site work order. After successful setup, the main control center will receive confirmation and all three indicator lights (red, yellow, and green) on the device will illuminate for 30 seconds (S3). Select the appropriate carrier for the alarm device based on its practical application on-site. When manual operation is required, the alarm device is strapped directly to the wrist with the sensor facing the fingertips. When wearing a safety helmet, the device is mounted on the brim of the helmet with straps, buckles, and adhesive, with the sensor facing forward. When wearing work clothes for inspection, the device is worn on the arm of the work clothes with straps, again with the sensor facing forward (S5). Operators should confirm the alarm device is properly worn before commencing work. If the alarm sounds during operation, immediately stop and check for problems until the work is completed. After returning to the starting point, remove the straps, buckles, and adhesive and disconnect the power.

[0026] The device in this embodiment can effectively and intuitively provide audible and visual alarm prompts at different distances, allowing the operation to be buffered and warned in stages, thereby truly protecting the personal safety of our on-site workers.

[0027] When worn by power plant maintenance personnel during on-site work, it serves as a reminder of the safe distance from energized equipment. When worn by power plant operators during on-site operations or inspections, it also serves as a reminder of the safe distance from energized equipment.

[0028] It will be apparent to those skilled in the art that the embodiments of the present invention are not limited to the details of the exemplary embodiments described above, and that the embodiments of the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the embodiments of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the embodiments of the present invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be encompassed within the embodiments of the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units, modules, or devices recited in the system, apparatus, or terminal claims may also be implemented by the same unit, module, or device through software or hardware. The terms "first," "second," etc., are used to indicate names and do not indicate any particular order.

[0029] Finally, it should be noted that the above description is merely an explanation of the present invention and is not intended to limit the invention. Although the present invention has been described in detail, those skilled in the art can still modify the technical solutions described above or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent voltage sensing alarm device, comprising a power frequency electric field sensor, a signal processing unit, a power supply unit, an audible and visual alarm unit, and a communication unit; characterized in that: The device is worn by the worker. The signal processing unit is connected to the power frequency electric field sensor and the audible and visual alarm unit. The signal processing unit stores the on-site working voltage parameters. Based on the electric field strength collected by the power frequency electric field sensor, it determines the induced voltage felt by the human body at this time. When it is greater than the voltage parameter built into the chip, the alarm device will sound an alarm to remind the worker to pay attention to safety and prevent electric shock.

2. The intelligent sensing voltage alarm device according to claim 1, characterized in that: The power frequency electric field sensor is an electrodeless electric field strength sensor or an electric field strength sensor based on MEMS technology.

3. The intelligent sensing voltage alarm device according to claim 1, characterized in that: The audible and visual alarm unit consists of red, yellow, and green indicator lights and a buzzer; the audible and visual alarm commands are provided by the signal processing unit.

4. The intelligent sensing voltage alarm device according to claim 1, characterized in that: The communication unit consists of Bluetooth, WiFi, and WiGig communication modules, enabling information exchange and data sharing with the wireless communication base station of the main control center.

5. The intelligent sensing voltage alarm device according to claim 4, characterized in that: The signal processing unit stores voltage level levels to determine the level and corresponding voltage parameters for different application scenarios.

6. The intelligent sensing voltage alarm device according to claim 3, characterized in that: The voltage parameters include alarm voltage and safety voltage. When the induced voltage of a worker approaching a live conductor is less than the safety voltage, the green indicator light of the audible and visual alarm unit illuminates and the buzzer remains silent. When the induced voltage of a worker approaching a live conductor is greater than the safety voltage, the yellow indicator light of the audible and visual alarm unit illuminates and the buzzer sounds intermittently. When the induced voltage of a worker approaching a live conductor is greater than the alarm voltage, the red indicator light of the audible and visual alarm unit illuminates and the buzzer sounds continuously.

7. The intelligent sensing voltage alarm device according to claim 5, characterized in that: The voltage level is set by the supervisor at the main control center via encrypted wireless communication before on-site operations to ensure that the device has the correct safety settings parameters during on-site operations and to protect the safety of the workers.

8. The intelligent sensing voltage alarm device according to claim 5, characterized in that: The voltage level range includes five levels: the first level is 220V / 380V for residential use; the second level is 10kV; the third level is 20 / 35kV; the fourth level is 63 / 110kV; and the fifth level is 220kV.

9. A method of using the intelligent sensing voltage alarm device according to claim 1, characterized in that: S1. Check the alarm device. Power on and perform a self-test. The buzzer should sound an alarm three times. There should be no abnormalities in each test. S2. Configure the alarm device. The main control center should establish encrypted communication with the device and set the voltage level corresponding to the field work order. S3. Select the carrier position and orientation of the alarm device according to the actual field needs. S5. Workers should ensure that the alarm device is properly worn before commencing work; if the alarm device sounds during the work process, the work should be stopped immediately to check for problems until the work is completed.

10. The method of use according to claim 9, characterized in that: In S2, after successful setup, the main control center will send a confirmation message and all three indicator lights (red, yellow, and green) on the device will light up for 30 seconds.

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