Wire current detection structure based on Hall sensor

Abstract

The utility model provides a lead current detection structure based on a Hall sensor, which comprises a mounting support base body, a control circuit board, an iron core, an iron core air gap, a lead through hole, a bottom shell, a mounting bracket and a packaging shell, the iron cores are fixedly installed on the back of the installation supporting base body, and iron core air gaps are formed between the iron cores. The wire penetrating holes are located in the middle positions of the installation supporting base body, the bottom outer shell and the packaging shell respectively. The bottom shell wraps the outer sides of the installation supporting base body, the control circuit board and the iron core, the iron core air gap is fixedly installed at the bottom of the bottom shell, and the packaging shell is fixedly installed in front of the bottom shell. According to the utility model, the arrangement of the installation support base body, the control circuit board and the iron core can effectively detect the current passing through the interior of the circuit, and the accuracy of current detection is high.

Description

Technical Field

[0001] The utility model relates to the technical field of current detection, in particular to a wire current detection structure based on a Hall sensor. Background Art

[0002] The Hall sensor is a commonly used sensor that uses the Hall effect to measure changes in the magnetic field and converts it into a voltage signal. In the field of current detection, the Hall sensor is widely used to measure current. Its advantages include high precision, low power consumption, and non-contact, making it an ideal choice for current detection.

[0003] The Hall effect refers to the phenomenon that when current flows through a conductor, a magnetic field perpendicular to the direction of the current will generate a potential difference. This phenomenon is called the Hall effect. By placing the Hall element in a magnetic field, when current flows through the wire, the change in the magnetic field sensed by the Hall element will cause its output voltage signal to change, thereby realizing the detection of current. Due to incorrect internal sensing position of existing Hall current sensors, unreasonable circuit structure design or interference, it is easy to cause the Hall sensor to have low accuracy when detecting wire current; due to inappropriate sensor position or improper core air gap design during design, the Hall sensor structure will not be able to effectively detect the current passing through the circuit.

[0004] Therefore, it is very necessary to invent a wire current detection structure based on Hall sensor. Summary of the invention

[0005] In order to solve the above technical problems, the utility model provides a wire current detection structure based on a Hall sensor to solve the problem that the existing wire current detection structure of the Hall sensor still cannot effectively detect the current passing through the circuit and the current detection accuracy is poor. A wire current detection structure based on a Hall sensor includes a mounting support base, a control circuit board, an iron core, an iron core air gap, a wire perforation, a bottom shell, a mounting bracket and a packaging shell, wherein: the control circuit board is fixedly mounted on the surface of the mounting support base, and the iron core is fixedly mounted on the back of the mounting support base, and an iron core air gap is arranged between the iron cores; the wire perforations are respectively located in the middle of the mounting support base, the bottom shell and the packaging shell; the bottom shell is wrapped around the outside of the mounting support base, the control circuit board and the iron core, and the iron core air gap is fixedly mounted on the bottom of the bottom shell, and the packaging shell is fixedly mounted in front of the bottom shell.

[0006] The mounting support base adopts a rectangular annular resin support body, and a plurality of connecting bolts are arranged on the surface of the mounting support base, and the connecting bolts on the surface of the mounting support base are positioned to fix the plate; the mounting support base is connected and fixed to the control circuit board through the connecting bolts on its surface, and a buckle is arranged on the back of the mounting support base, and the mounting support base is connected and fixed to the two groups of iron cores through the buckle on its back; the support of the mounting support base forms an iron core air gap between the two groups of iron cores, which has the following functions: ① Provide support and fixation: The mounting support base provides structural support for the sensor, ensuring that the various components inside the sensor can be correctly positioned and fixed, thereby ensuring the stability of the sensor ②Fix the core air gap: The design of the mounting support base can ensure the fixation of the core air gap, which is very important for maintaining the distance and position between the cores to ensure the performance and measurement accuracy of the sensor; ③Fix the control circuit board: The control circuit board is usually fixed on the mounting support base, which can ensure that the control circuit board is firmly installed inside the sensor, thereby preventing the circuit board from moving or being damaged due to external vibration or other factors; ④Keep the position of the Hall element stable: By fixing the control circuit board to the mounting support base, the position and angle of the Hall element installed on the control circuit board in the core air gap can be ensured to remain stable, thereby improving the accuracy and stability of current measurement.

[0007] The control circuit board uses a PCB circuit board, and the control circuit board is fixed with a Hall element. The Hall element inside the control circuit board is a Hall effect sensor chip, such as the air gap between the iron cores to ensure the correct position and distance between the conductor measuring the current; the surface of the control circuit board is provided with an amplifier circuit, an output circuit, a power supply circuit, a connector pin, a protection circuit and auxiliary electrical components, such as filter capacitors, resistors, inductors, voltage regulators, signal conditioning devices, etc., which have the following functions: ① Amplify and process signals: The control circuit board usually contains amplifier circuits and signal processing circuits for amplifying and processing weak voltage signals sensed from the Hall element. These circuits are responsible for amplifying the signals sensed by the Hall element to a suitable range, And filter, adjust and process the signal to ensure the stability and reliability of the signal; ②Convert to readable output: The control circuit board converts the amplified and processed signal into a readable output, usually a current or voltage signal. These output signals can be connected to external systems or devices to monitor, record or control the current; ③Control and drive of Hall elements: The control circuit board contains circuits for controlling and driving Hall elements. These circuits are responsible for ensuring that the Hall elements can work at the correct time and conditions to achieve accurate current measurement; ④Connectors and pins: The control circuit board usually has connectors and pins for connecting other components, such as iron cores, Hall elements, etc., as well as external systems or devices, to provide data transmission and control interfaces.

[0008] The iron core uses a pair, and the iron core is made of high magnetic permeability material, such as silicon steel sheet or ferrite, and the coil is not wound on the outside of the iron core; the iron cores are set in mirror image with a gap between them to form an iron core air gap, which has the following functions: ① Enhance the magnetic field: The iron core is made of high magnetic permeability material, such as silicon steel sheet or ferrite, which can concentrate and enhance the magnetic field generated by the wire, which helps to increase the magnetic field strength sensed by the Hall element, thereby improving the sensitivity and accuracy of the sensor; ② Guide the magnetic field: The design and position of the iron core can guide the direction of the magnetic field flow and ensure that they flow through the Hall element to produce measurable The shape and material selection of the iron core are crucial to the guidance and concentration of the magnetic field; ③ Creating an air gap: The air gap between the iron cores is very critical. It determines the sensitivity and range of the sensor to current measurement. By adjusting the distance and shape between the iron cores, the distribution of the magnetic field inside the sensor can be controlled, thereby affecting the performance of the sensor; ④ Fixing the Hall element: Usually, the Hall element on the iron core is placed in the air gap of the iron core in order to sense the current passing through the wire and generate a corresponding voltage signal. The design and installation of the iron core ensure that the Hall element is in an ideal position to achieve the best measurement effect.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. The setting of the mounting support base of the utility model has the following functions: ① providing support and fixation: the mounting support base provides structural support for the sensor, ensuring that the various components inside the sensor can be correctly positioned and fixed, thereby ensuring the stability and reliability of the sensor; ② fixing the iron core air gap: the design of the mounting support base can ensure the fixation of the iron core air gap, which is very important for maintaining the distance and position between the iron cores to ensure the performance and measurement accuracy of the sensor; ③ fixing the control circuit board: the control circuit board is usually fixed on the mounting support base, which can ensure that the control circuit board is firmly installed inside the sensor, thereby preventing the circuit board from moving or being damaged due to external vibration or other factors; ④ keeping the position of the Hall element stable: by fixing the control circuit board to the mounting support base, it can be ensured that the position and angle of the Hall element installed on the control circuit board in the iron core air gap remain stable, thereby improving the accuracy and stability of current measurement.

[0011] 2. The setting of the control circuit board of the utility model has the following functions: ① amplifying and processing signals: the control circuit board usually contains amplifier circuits and signal processing circuits, which are used to amplify and process the weak voltage signals sensed by the Hall element. These circuits are responsible for amplifying the signals sensed by the Hall element to a suitable range, and filtering, adjusting and other processing of the signals to ensure the stability and reliability of the signals; ② converting into readable outputs: the control circuit board converts the amplified and processed signals into readable outputs, usually current or voltage signals. These output signals can be connected to external systems or devices for monitoring, recording or controlling the magnitude of the current; ③ controlling and driving the Hall element: the control circuit board contains circuits for controlling and driving the Hall element. These circuits are responsible for ensuring that the Hall element can work at the correct time and under the correct conditions to achieve accurate current measurement; ④ connectors and pins: the control circuit board usually has connectors and pins for connecting other components, such as iron cores, Hall elements, etc., as well as external systems or devices, to provide data transmission and control interfaces.

[0012] 3. The setting of the iron core of the utility model has the following functions: ① Enhance the magnetic field: the iron core is made of high magnetic permeability material, such as silicon steel sheet or ferrite, which can concentrate and enhance the magnetic field generated by the wire, which helps to increase the magnetic field strength perceived by the Hall element, thereby improving the sensitivity and accuracy of the sensor; ② Guide the magnetic field: the design and position of the iron core can guide the direction of the flow of the magnetic field and ensure that they flow through the Hall element to produce a measurable effect. The shape and material selection of the iron core are crucial for guiding and concentrating the magnetic field; ③ Create an air gap: The core air gap between the iron cores is very critical. It determines the sensitivity and range of the sensor to current measurement. By adjusting the distance and shape between the iron cores, the distribution of the magnetic field inside the sensor can be controlled, thereby affecting the performance of the sensor; ④ Fix the Hall element: Usually, the Hall element on the iron core will be placed in the core air gap in order to sense the current passing through the wire and generate a corresponding voltage signal. The design and installation of the iron core ensure that the Hall element is located in an ideal position to achieve the best measurement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0015] In the figure:

[0016] The mounting support base 1, the control circuit board 2, the iron core 3, the iron core air gap 4, the wire through-hole 5, the bottom shell 6, the mounting bracket 7, and the packaging shell 8 are installed. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0018] As attached Figure 1 To Attachment Figure 2 shown.

[0019] The utility model provides a wire current detection structure based on a Hall sensor, comprising an installation support base 1, a control circuit board 2, an iron core 3, an iron core air gap 4, a wire through hole 5, a bottom shell 6, a mounting bracket 7 and a packaging shell 8, wherein: the control circuit board 2 is fixedly mounted on the surface of the installation support base 1, and the iron core 3 is fixedly mounted on the back of the installation support base 1, and an iron core air gap 4 is arranged between the iron cores 3; the wire through holes 5 are respectively located in the middle positions of the installation support base 1, the bottom shell 6 and the packaging shell 8; the bottom shell 6 is wrapped around the outside of the installation support base 1, the control circuit board 2 and the iron core 3, and the iron core air gap 4 is fixedly mounted on the bottom of the bottom shell 6, and the packaging shell 8 is fixedly mounted in front of the bottom shell 6.

[0020] The utility model provides a wire current detection structure based on a Hall sensor.

[0021] 1. Structural overview: The conductor current detection structure is based on Hall sensor technology and is designed to achieve accurate measurement of conductor current. The structure includes the following main components: mounting support base 1, control circuit board 2, iron core 3, iron core air gap 4, wire perforation 5, bottom shell 6, mounting bracket 7 and packaging shell 8.

[0022] 2. Specific implementation steps:

[0023] 2.1 Component preparation:

[0024] 1 A rectangular annular resin support body is selected as the installation support base body 1, and a connecting bolt is arranged on its surface and a buckle is arranged on the back.

[0025] 2. Make a control circuit board 2, use a PCB circuit board, and install an amplifier circuit, an output circuit, a power supply circuit, a connector pin, a protection circuit and other auxiliary electrical components on its surface.

[0026] 3 Select a pair of iron cores 3 made of high magnetic permeability material and ensure that the coil is not wound around the outside.

[0027] 4 Prepare the bottom shell 6 and the packaging shell 8 to wrap other components and provide protection.

[0028] 2.2 Structural assembly:

[0029] The control circuit board 2 is fixed on the surface of the mounting support base 1 and connected and fixed by connecting bolts.

[0030] 2 Fix the iron core 3 on the back of the mounting support base 1, and connect and fix the two sets of iron cores by snapping.

[0031] 3. Ensure that there is an appropriate gap between the cores to form the core air gap 4.

[0032] 4 is respectively mounted on the mounting support base 1, the bottom shell 6 and the packaging shell 8 at the middle position of the wire through hole 5.

[0033] 2.3 Final assembly:

[0034] Wrap the bottom shell 6 around the outside of the mounting support base 1, the control circuit board 2 and the iron core 3, and ensure that the iron core air gap 4 is fixed at the bottom of the bottom shell.

[0035] 2 The encapsulation shell 8 is fixedly mounted in front of the bottom housing 6 to complete the final assembly of the structure.

[0036] 3. Working principle:

[0037] The current flowing through the current hole generates a corresponding magnetic field in the iron core 3, and the Hall element in the middle of the iron core air gap 4 senses the change of the magnetic field and converts it into a corresponding voltage signal. After signal conversion such as an amplification circuit, a voltage signal corresponding to the magnitude of the current flowing through the current hole is output.

[0038] 4. Structural features:

[0039] By fixing the mounting support base 1, the stable position and angle of the core air gap 4 and the control circuit board 2 are ensured, thereby improving the accuracy of current measurement.

[0040] The iron core 3 made of high magnetic permeability material improves the concentration of the magnetic field and the sensitivity of the sensor.

[0041] The structure is simple and stable, easy to assemble and maintain, and suitable for wire current detection applications in different environments.

[0042] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A wire current detection structure based on a Hall sensor, characterized in that: The invention comprises a mounting support base (1), a control circuit board (2), an iron core (3), an iron core air gap (4), a wire through hole (5), a bottom shell (6), a mounting bracket (7) and a packaging shell (8), wherein: the control circuit board (2) is fixedly mounted on the surface of the mounting support base (1), and the iron core (3) is fixedly mounted on the back of the mounting support base (1), and an iron core air gap (4) is arranged between the iron cores (3); the wire through holes (5) are respectively located in the middle of the mounting support base (1), the bottom shell (6) and the packaging shell (8); the bottom shell (6) is wrapped around the outside of the mounting support base (1), the control circuit board (2) and the iron core (3), and the iron core air gap (4) is fixedly mounted on the bottom of the bottom shell (6), and the packaging shell (8) is fixedly mounted in front of the bottom shell (6).

2. A wire current detection structure based on a Hall sensor as claimed in claim 1, characterized in that: The mounting support base (1) adopts a rectangular annular resin support, and a plurality of connecting bolts are arranged on the surface of the mounting support base (1), and the connecting bolts on the surface of the mounting support base (1) are positioned to fix the plate; the mounting support base (1) is connected to and fixed to the control circuit board (2) via the connecting bolts on its surface, and a buckle is arranged on the back of the mounting support base (1), and the mounting support base (1) is connected to and fixed to two groups of iron cores (3) via the buckle on its back; the support of the mounting support base (1) forms an iron core air gap (4) between the two groups of iron cores (3) to fix them.

3. A wire current detection structure based on a Hall sensor as claimed in claim 1, characterized in that: The control circuit board (2) adopts a PCB circuit board, and the control circuit board (2) is fixed with a Hall element, and the Hall element inside the control circuit board (2) is a Hall effect sensor chip to ensure the correct position and distance between the control circuit board (2) and the conductor for measuring the current; the surface of the control circuit board (2) is provided with an amplifier circuit, an output circuit, a power supply circuit, a connector pin, a protection circuit and auxiliary electrical components.

4. The wire current detection structure based on a Hall sensor as claimed in claim 1, characterized in that: The iron cores (3) are in pair and are made of a high magnetic permeability material; the iron cores (3) are arranged in mirror images of each other, with a gap left between them to form an iron core air gap (4).

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