A human body bionical device for measuring power frequency electric field and a measuring method

Abstract

The present application relates to the technical field of electric field measurement, in particular to a kind of human bionics device and measurement method for measuring power frequency electric field.The rubber dummy of anthropomorphic shape is provided with non-metallic suspension ring on the top, and the bottom can be placed on the non-metallic base;The rubber dummy is divided into head, chest and leg from top to bottom, and electric field measuring device is arranged in head, chest and leg, and electric field measuring device is wirelessly connected with measurement data storage device;The rubber dummy is made by filling conductive filler in rubber matrix, and the conductive filler is mixed by carbon black, ceramic powder and graphite;According to the electric conductivity of different parts of human body, the addition amount of each component in the conductive filler of the corresponding part of rubber dummy is determined.The present application simulates the work of staff under power frequency electric field by using carbon black filled rubber dummy, carries out real-time measurement on space electric field by electric field measuring device, and realizes the accurate measurement of electric field of worker's body in space under normal working environment.

Description

Technical Field

[0001] This invention relates to the field of electric field measurement technology, and in particular to a human-inspired bionic device and method for measuring power frequency electric fields. Background Technology

[0002] As my country enters a period of rapid development, the demand for and reliance on electricity resources for local infrastructure construction is constantly increasing. Therefore, high-quality and stable power supply has become a new requirement for the power industry. To ensure the stable operation of the 10kV power grid, live-line work is required. However, live-line work is complex and dangerous, and is easily affected by external weather conditions.

[0003] Existing technologies have developed some live-line working robots that can perform dangerous tasks on power lines, replacing humans. These robots perform maintenance, inspection, and installation tasks by manipulating robotic arms, thereby reducing the risks associated with manual live-line operations. However, current live-line working robots still have some problems.

[0004] First, the performance of existing live-line working robots remains unstable under complex weather conditions. For example, in heavy snow or thunderstorms, power lines are easily damaged, making robot operation difficult. Additionally, in rainy weather, conductor resistance may be adversely affected, potentially causing insulation equipment to lose its original insulation properties, thus threatening the safety of workers. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a human bionic device and method for measuring power frequency electric fields. It can measure the magnitude of the electric field in the working space of a human under power frequency electric fields, thereby meeting the electric field measurement requirements in different spaces and ensuring the stability of measurement data and the safety of personnel.

[0006] This invention provides a human bionic device for measuring power frequency electric fields, comprising:

[0007] The invention includes a humanoid rubber dummy, the top of which is equipped with a non-metallic suspension ring and the bottom which can be placed on a non-metallic base; the rubber dummy is divided into a head, chest and legs from top to bottom, and electric field measuring devices are provided in the head, chest and legs, and the electric field measuring devices are wirelessly connected to the measurement data storage device.

[0008] The rubber dummy is made by filling a rubber matrix with conductive filler, which is a mixture of carbon black, ceramic powder and graphite. The amount of each component added to the conductive filler in the corresponding part of the rubber dummy is determined according to the conductivity of different parts of the human body.

[0009] Preferably, the chest of the rubber dummy is divided into multiple parts along the longitudinal direction, each corresponding to a different organ in the human body; the amount of each component of the conductive filler is adjusted according to the electrical conductivity of different organ locations in the human body.

[0010] Preferably, the amount of each component of the conductive filler added is determined in the following manner:

[0011] The volume fraction φ of the mixed conductive filler of carbon black, ceramic powder, and graphite is obtained based on the relationship between resistivity ρ and the volume fraction φ of conductive filler particles.

[0012] ρ=ρ m (1+2.5φ)

[0013] Where, ρ m It is the resistivity of the rubber matrix;

[0014] The current density J of the conductive filler is obtained by the electric field environment required for the experiment and the conductivity of different parts of the human body. The volume V of the mixed conductive filler is obtained according to σ=fV / ρAJ. Then, Vφ is calculated to obtain the specific content of the mixed conductive filler, which is mainly carbon black, excluding the rubber matrix.

[0015] Where f is the filling coefficient, f = A' / A, A' is the net cross-sectional area of ​​the filling system, and A is the cross-sectional area under ideal conditions;

[0016] Let ω be the statistical average value of the gap between conductive filler particles. The relationship between the current density J in the composite material and ω is described as follows:

[0017] J = J0exp(-ω / λ)

[0018] Where J0 is a constant related to the properties of the composite material and the applied electric field strength, and λ is a constant related to the length of the conductive chain;

[0019] The volume of the conductive filler is calculated using the above method. By setting the addition ratio of graphite and ceramic powder to a fixed value, the amount of carbon black added to the conductive filler can be obtained.

[0020] Preferably, the head, chest and legs of the rubber dummy are connected by movable joints, and each part has a reserved hole, into which the electric field measuring device is fixed by inserting a connecting rod.

[0021] Preferably, the rubber dummy is manufactured using 3D printing or digital scanning, and the steps are as follows:

[0022] (1) Molding or casting: Pour the rubber material and conductive filler mixed with carbon black, ceramic powder and graphite into the prepared mold. Each part corresponds to a different mold and a different proportion of conductive filler to ensure that the rubber is fully and evenly filled and that the material is fully cured.

[0023] (2) Demolding and finishing: After the rubber material has fully cured, remove it from the mold and finish and modify it;

[0024] (3) Assembly and connection: Different parts of the chest of the rubber dummy are connected with rubber adhesive, and the demolded head, chest and legs are connected by joints to form the rubber dummy;

[0025] (4) Testing and adjustment: After the rubber dummy is completed, it is tested to check its appearance, mobility and stability, and adjustments are made according to the test results.

[0026] Preferably, the mold is divided into a head mold, 25cm high, a chest mold, 60cm high, and a leg mold, 100cm high.

[0027] Another aspect of the present invention provides a method for measuring electric fields using a human bionic device, comprising the following steps:

[0028] (1) Electrifying the appearance and characteristics of workers by dressing rubber dummy in an electric field work jacket;

[0029] (2) Fix the electric field measuring device to the reserved position on the rubber dummy to ensure good contact between the electric field measuring device and the electric field during the measurement process;

[0030] (3) The rubber dummy is hoisted and placed in the workplace where electric field measurements are required by using the non-metallic suspension ring at the top, ensuring that its body is in contact with the electric field in the environment;

[0031] (4) Turn on the electric field measuring device, ensure it is working properly and connect it to the data logger or computer;

[0032] (5) Record the electric field values ​​measured by the electric field measuring device in real time under normal operating conditions;

[0033] (6) Analyze and evaluate the distribution of electric field intensity in the space where the worker is located based on the recorded data.

[0034] Preferably, different movements of the rubber dummy are achieved by manipulating the joint movements of the rubber dummy.

[0035] Beneficial effects:

[0036] This invention uses a carbon black-filled rubber dummy to simulate the work of a worker under a power frequency electric field. It carries an electric field measuring device to measure the spatial electric field in real time, overcoming the limitation of conventional electric field measuring equipment that can only measure electric field data at a fixed height near the ground. This avoids the harm to personnel caused by high-intensity electric fields and achieves accurate measurement of the electric field on a worker's body in a normal working environment. It can improve the adaptability of live-line working robots in complex climatic conditions, enhancing the efficiency and safety of power grid maintenance. Simultaneously, it will reduce the need for manual live-line operations and improve the safety of workers. All of these will contribute to meeting the power industry's demand for high-quality and stable power supply. Attached Figure Description

[0037] Figure 1 A schematic diagram of a human bionic device for measuring power frequency electric fields provided in an embodiment of the present invention;

[0038] The labels in the diagram are as follows:

[0039] 1-Rubber dummy; 2-Non-metallic suspension ring; 3-First section; 4-Second section; 5-Third section; 6-Non-metallic base. Detailed Implementation

[0040] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0041] See Figure 1 The present invention provides a human bionic device for measuring power frequency electric fields, characterized in that it includes a humanoid rubber dummy 1, the top of which is provided with a non-metallic suspension ring 2, and the bottom can be placed on a non-metallic base 6; the rubber dummy 1 is divided into a head, chest and legs from top to bottom, and electric field measuring devices are provided in the head, chest and legs, and the electric field measuring devices are wirelessly connected to the measurement data storage device.

[0042] The rubber dummy 1 is made by filling a rubber matrix with conductive filler, which is a mixture of carbon black, ceramic powder, and graphite. The amount of each component added to the conductive filler in the corresponding part of the rubber dummy 1 is determined according to the electrical conductivity of different parts of the human body. This conductive filler has high conductivity and remains stable even under complex climatic conditions. It can enhance the contact between the robot and electrical equipment, improve the robot's operational accuracy and stability, and further reduce the risk of working with live electrical equipment.

[0043] Specifically, the chest of the rubber dummy 1 is divided into multiple parts along the longitudinal direction, each corresponding to a different organ in the human body; the amount of each component of the conductive filler is adjusted according to the electrical conductivity of the different organ locations in the human body.

[0044] In one embodiment, the dielectric constant and conductivity of the human body at power frequency are measured in the head and legs, followed by the heart, kidneys, and spleen. The chest of the rubber dummy 1 can be longitudinally divided into three sections, as shown in the figure: Section 3, Section 4, and Section 5, corresponding from top to bottom to the positions of the heart, spleen, and kidneys, respectively. This allows for the measurement of the effect of the electric field on different parts of the human body. By filling the dummy with carbon black of different concentrations to mimic the dielectric constant of different parts of the human body, the electric field measurement requirements in different spaces can be met, thereby ensuring the stability of the measurement data and the safety of personnel.

[0045] Specifically, the amount of each component of the conductive filler added is determined in the following way:

[0046] The polymer rubber matrix contains randomly distributed conductive filler particles, and the current can only flow through the composite material through the conductive chains formed by the contacting conductive filler particles.

[0047] The volume fraction φ of the mixed conductive filler of carbon black, ceramic powder, and graphite is obtained based on the relationship between resistivity ρ and the volume fraction φ of conductive filler particles.

[0048] ρ=ρ m (1+2.5φ)

[0049] Where, ρ m It is the resistivity of the rubber matrix;

[0050] The current density J of the conductive filler is obtained by the electric field environment required for the experiment and the conductivity of different parts of the human body. The volume V of the mixed conductive filler is obtained according to σ=fV / ρAJ. Then, Vφ is calculated to obtain the specific content of the mixed conductive filler, which is mainly carbon black, excluding the rubber matrix.

[0051] Where f is the filling coefficient, f = A' / A, A' is the net cross-sectional area of ​​the filling system, and A is the cross-sectional area under ideal conditions.

[0052] When there are no gaps between particles in the filled system, the filling factor f is 1, meaning the net cross-sectional area equals the ideal cross-sectional area. In this case, the particles are closely packed, forming a tightly packed structure.

[0053] When gaps exist in the filled system or the spacing between particles is large, the filling factor f will be less than 1, indicating that the net cross-sectional area is smaller than the ideal cross-sectional area. In this case, gaps exist between the particles, and the structure of the filled system is relatively loose.

[0054] Let ω be the statistical average value of the gap between conductive filler particles. The relationship between the current density J in the composite material and ω is described as follows:

[0055] J = J0exp(-ω / λ)

[0056] Where J0 is a constant related to the properties of the composite material and the applied electric field strength, and λ is a constant related to the length of the conductive chain;

[0057] The volume of the conductive filler is calculated using the above method. By setting the addition ratio of graphite and ceramic powder to a fixed value, the amount of carbon black added to the conductive filler can be obtained.

[0058] Specifically, the head, chest and legs of the rubber dummy 1 are connected by movable joints, and each part has a reserved hole. The electric field measuring device is fixed by inserting a connecting rod into the reserved hole.

[0059] Specifically, the rubber dummy 1 is manufactured using 3D printing or digital scanning, and the steps are as follows:

[0060] (1) Molding or casting: Pour the rubber material and conductive filler mixed with carbon black, ceramic powder and graphite into the prepared mold. Each part corresponds to a different mold and a different proportion of conductive filler to ensure that the rubber is fully and evenly filled and that the material is fully cured.

[0061] (2) Demolding and finishing: After the rubber material has fully cured, remove it from the mold and finish and modify it;

[0062] (3) Assembly and Connection: Different parts of the chest of the rubber dummy 1 are connected using rubber adhesives. This does not significantly affect the material strength. Specially formulated rubber adhesives are used to connect the rubber parts. These adhesives are designed to be compatible with rubber materials and provide a strong and reliable connection. The demolded head, chest, and legs are connected by joints to form the rubber dummy 1;

[0063] (4) Testing and adjustment: After completing the rubber dummy 1, test it to check its appearance, mobility and stability, and make adjustments based on the test results to meet the expected use needs and requirements.

[0064] Specifically, the molds are divided into a head mold (25cm high), a chest mold (60cm high), and a leg mold (100cm high).

[0065] The method for measuring electric fields using human bionic devices includes the following steps:

[0066] (1) Remove the rubber dummy 1 from the non-metallic base 6 and dress the rubber dummy 1 in an electric field work jacket to simulate the appearance and characteristics of a worker;

[0067] (2) Fix the electric field measuring device to the reserved position on the rubber dummy 1 to ensure good contact between the electric field measuring device and the electric field during the measurement process;

[0068] (3) The rubber dummy 1 is suspended and placed in the workplace where electric field measurement is required by the non-metallic suspension ring 2 at the top, ensuring that its body is in contact with the electric field in the environment;

[0069] (4) Turn on the electric field measuring device, ensure it is working properly and connect it to the data logger or computer;

[0070] (5) Record the electric field values ​​measured by the electric field measuring device in real time under normal operating conditions;

[0071] (6) Analyze and evaluate the electric field intensity distribution in the space where the worker is located based on the recorded data. After the measurement is completed, put the rubber dummy 1 back onto the non-metallic base 6 for easy storage.

[0072] During the measurement process, different movements of the rubber dummy 1 are achieved by manipulating its joints. The joints of the rubber dummy 1 can use common rotatable mechanisms, and their control can be achieved remotely, making it convenient for ground personnel to operate.

[0073] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A human bionic device for measuring power frequency electric fields, characterized in that, The invention includes a humanoid rubber dummy, the top of which is equipped with a non-metallic suspension ring and the bottom which can be placed on a non-metallic base; the rubber dummy is divided into a head, chest and legs from top to bottom, and electric field measuring devices are provided in the head, chest and legs, and the electric field measuring devices are wirelessly connected to the measurement data storage device. The rubber dummy is made by filling a rubber matrix with conductive filler, which is a mixture of carbon black, ceramic powder and graphite. The amount of each component added to the conductive filler in the corresponding part of the rubber dummy is determined according to the conductivity of different parts of the human body. The amount of each component of the conductive filler added is determined in the following way: The volume fraction ϕ of the mixed conductive filler of carbon black, ceramic powder, and graphite is obtained based on the relationship between resistivity ρ and the volume fraction ϕ of conductive filler particles. p = p m (1 + 2.5 φ) Where, ρ m It is the resistivity of the rubber matrix; The current density J of the conductive filler is obtained by the electric field environment required for the experiment and the conductivity of different parts of the human body. The volume V of the mixed conductive filler is obtained according to σ= fV / ρAJ. Then, Vϕ is calculated to obtain the specific content of the mixed conductive filler, which is mainly carbon black, excluding the rubber matrix. Where f is the filling factor, f = A' / A, A' is the net cross-sectional area of ​​the filling system, and A is the cross-sectional area under ideal conditions; Let ω be the statistical average value of the gap between conductive filler particles. The relationship between the current density J in the composite material and ω is described as follows: J = J0 exp(-ω / λ) Where J0 is a constant related to the properties of the composite material and the applied electric field strength, and λ is a constant related to the length of the conductive chain; The volume of the conductive filler is calculated using the above method. By setting the addition ratio of graphite and ceramic powder to a fixed value, the amount of carbon black added to the conductive filler can be obtained.

2. The human bionic device for measuring power frequency electric fields according to claim 1, characterized in that, The chest of the rubber dummy is divided into multiple parts along the longitudinal direction, each corresponding to the location of a different organ in the human body. The amount of each component of the conductive filler is adjusted according to the electrical conductivity of different organs in the human body.

3. The human bionic device for measuring power frequency electric fields according to claim 1, characterized in that, The head, chest, and legs of the rubber dummy are connected by movable joints, and pre-drilled holes are provided in each part. The electric field measuring device is fixed by inserting a connecting rod into the pre-drilled holes.

4. The human bionic device for measuring power frequency electric fields according to claim 1, characterized in that, The rubber dummy is manufactured using 3D printing or digital scanning, and the steps are as follows: (1) Molding or casting: Pour the rubber material and conductive filler mixed with carbon black, ceramic powder and graphite into the prepared mold. Each part corresponds to a different mold and a different proportion of conductive filler to ensure that the rubber is fully and evenly filled and that the material is fully cured. (2) Demolding and finishing: After the rubber material has completely cured, remove it from the mold and finish and modify it; (3) Assembly and connection: Different parts of the chest of the rubber dummy 1 are connected with rubber adhesive, and the demolded head, chest and legs are connected by joints to form the rubber dummy 1; (4) Testing and adjustment: After completing rubber dummy 1, test it to check its appearance, mobility and stability, and make adjustments based on the test results.

5. A human bionic device for measuring power frequency electric fields according to claim 4, characterized in that, The molds are divided into a head mold (25 cm high), a chest mold (60 cm high), and a leg mold (100 cm high).

6. A method for measuring electric field using the human bionic device according to any one of claims 1-5, characterized in that, Includes the following steps: (1) Equip rubber dummy with an electric field work jacket to simulate the appearance and characteristics of a worker; (2) Fix the electric field measuring device to the reserved position on the rubber dummy to ensure good contact between the electric field measuring device and the electric field during the measurement process; (3) The rubber dummy is hoisted and placed in the workplace where electric field measurement is required by the non-metallic suspension ring at the top, ensuring that its body is in contact with the electric field in the environment; (4) Turn on the electric field measuring device, ensure it is working properly and connected to the data logger or computer; (5) Record the electric field values ​​measured by the electric field measuring device in real time under normal operating conditions; (6) Analyze and evaluate the distribution of electric field intensity in the space where the worker is located based on the recorded data.

7. The measurement method for the human bionic device according to claim 6, characterized in that, During the measurement process, different movements of the rubber dummy are achieved by manipulating the joints of the dummy.

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