CN209215468U - A kind of current sensor with copper foil shielding layer - Google Patents
A kind of current sensor with copper foil shielding layer Download PDFInfo
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- CN209215468U CN209215468U CN201821807224.3U CN201821807224U CN209215468U CN 209215468 U CN209215468 U CN 209215468U CN 201821807224 U CN201821807224 U CN 201821807224U CN 209215468 U CN209215468 U CN 209215468U
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- current sensor
- copper
- pcb board
- magnetic core
- copper foil
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Abstract
The utility model discloses a kind of current sensor with copper foil shielding layer, outer housing including current sensor magnetic core and cladding current sensor magnetic core, in the opened gap of current sensor magnetic core, hall sensing chip is set, hall sensing chip passes through chip connector connecting PCB board, plate hole is provided on pcb board, and on the plate hole in be inserted in copper foils for shielding ring.The utility model wraps up the overcurrent copper bar of primary current by copper foils for shielding ring, the interference signal of copper bar periphery is introduced into the power ground of pcb board by copper foil, and magnetic core acquisition is exactly pure copper bar current signal, the signal exported after late-class circuit amplifies is purely just the signal of primary current, to promote the detection accuracy of product, in the case that solve the current sensor of the prior art has peripheral magnetic interference near primary current, the technical issues of interference signal being simultaneously amplified output end, just lose precision to the acquisition of primary current.
Description
Technical field
The utility model belongs to current sensing techniques field, and in particular to a kind of current sense with copper foil shielding layer
Device.
Background technique
Current sensor can experience the information of tested electric current, and can will test the information experienced, and become according to certain rules
Change into meet the information output of the electric signal of certain standard needs or form needed for other, with meet the transmission of information, processing,
Storage, display, record and control etc. require.Electronic current mutual inductor includes Hall current sensor, Rogowski electric current
Sensor and the variable-frequency power sensor for being exclusively used in frequency conversion electrical measurement.Hall device is a kind of using made of semiconductor material
Magnetoelastic transducer part when there is a magnetic field to pass through the device sense magnetic surface, is then brought out if being passed through control electric current in input terminal in output
Existing Hall voltage.In the case that the current sensor of the prior art has peripheral magnetic interference near primary current, it can will interfere
Signal simultaneously amplifies output end, just loses precision to the acquisition of primary current.
Summary of the invention
(1) technical solution
In order to overcome the shortage of prior art, the utility model provides a kind of current sensor with copper foil shielding layer, packet
It includes current sensor magnetic core and coats the outer housing of the current sensor magnetic core, the inside of the outer housing opens up overcurrent copper bar
Shell mesoporous, the current sensor magnetic core is open-loop current sensor magnetic core, and in the current sensor magnetic core
Hall sensing chip is arranged in opened gap, and the hall sensing chip passes through chip connector connecting PCB board, opens on the pcb board
Have plate hole, and on the plate hole in be inserted in copper foils for shielding ring, the copper foils for shielding ring is fixed on the pcb board, and institute
State the power ground that copper foils for shielding ring connects the pcb board.
Further, the copper foils for shielding ring includes copper foil ring body, copper foot, pin contacts and the first spiral shell for coating overcurrent copper bar
Bolt is set in the copper foil ring body there are two the copper foot, and the copper foot is equipped with the screw hole for penetrating first bolt, institute
It states copper foot to be fixed on the pcb board by first bolt, and is fixedly connected in the inner segment of first bolt described
Pin contacts, and the power ground of the pin contacts and the pcb board is electrically connected.
Further, the output end and the adjusting for adjusting output parameter that the pcb board is equipped with connection outer member
Potentiometer.
Further, the outer housing is equipped with attachment base for fixing, and the attachment base is equipped with bolt hole.
Working principle of the utility model is: traditional open loop Hall current sensor, because directly being acquired by magnetic core
Primary current signal directly amplifies output by rear class operational amplifier circuit, there is peripheral magnetic interference near some primary currents
In the case of, interference signal can be simultaneously amplified output end, precision is just lost to the acquisition of primary current, and this is practical new
Type wraps up the overcurrent copper bar of primary current when magnetic core acquires primary current signal by copper foils for shielding ring, by copper bar periphery
Interference signal the power ground of the pcb board is introduced by copper foil, and magnetic core acquisition is exactly that pure copper bar electric current is believed
Number, the signal exported after late-class circuit amplifies is purely just the signal of primary current, to promote the detection accuracy of product.
(2) beneficial effect
The utility model has the beneficial effects that compared with the prior art, the utility model wraps up primary side by copper foils for shielding ring
The interference signal of copper bar periphery is introduced into the power ground of the pcb board by the overcurrent copper bar of electric current by copper foil, and magnetic core is adopted
Collection is exactly pure copper bar current signal, and the signal exported after late-class circuit amplifies is purely just the letter of primary current
Number, to promote the detection accuracy of product, the current sensor for solving the prior art has peripheral magnetic field near primary current
In the case where interference, interference signal can be simultaneously amplified output end, the skill of precision is just lost to the acquisition of primary current
Art problem.
Detailed description of the invention
Fig. 1 is the external structure with the current sensor of copper foil shielding layer；
Fig. 2 is the first viewing angle constructions figure with the current sensor mounted inside of copper foil shielding layer；
Fig. 3 is the second viewing angle constructions figure with the current sensor mounted inside of copper foil shielding layer；
Fig. 4 is the structure chart of copper foils for shielding ring.
Specific embodiment
The utility model is further described below with reference to embodiment.
Embodiment one
As shown in Fig. 1 ~ 4, the implementation case provides a kind of current sensor with copper foil shielding layer, including current sense
Device magnetic core 1 and the outer housing 2 for coating the current sensor magnetic core 1, the inside of the outer housing 2 opens up the shell of overcurrent copper bar
Mesoporous 21, which is characterized in that the current sensor magnetic core 1 is open-loop current sensor magnetic core, and in the current sense
Hall sensing chip 3 is arranged in the opened gap of device magnetic core 1, and the hall sensing chip 3 passes through 31 connecting PCB board 4 of chip connector,
Plate hole is provided on the pcb board 4, and on the plate hole in be inserted in copper foils for shielding ring 5, the copper foils for shielding ring 5 is fixed on institute
It states on pcb board 4, and the copper foils for shielding ring 5 connects the power ground of the pcb board 4.
In the present embodiment, the copper foils for shielding ring 5 includes the copper foil ring body 51 of cladding overcurrent copper bar, copper foot 52, foot touching
First 53 and first bolt 54, it sets there are two the copper foot 52 in the copper foil ring body 51, the copper foot 52 is equipped with for penetrating
The screw hole of first bolt 54, the copper foot 52 are fixed on the pcb board 4 by first bolt 54, and in institute
The inner segment for stating the first bolt 54 is fixedly connected with the pin contacts 53, and the power ground of the pin contacts 53 and the pcb board 4 is electric
Property connection, the output end 41 and adjusting potentiometer for adjusting output parameter that the pcb board 4 is equipped with connection outer member
42, the outer housing 2 is equipped with attachment base 6 for fixing, and the attachment base 6 is equipped with bolt hole 61.The present embodiment passes through
Magnetic core directly acquires primary current signal, directly amplifies output by rear class operational amplifier circuit, has near some primary currents outer
In the case where enclosing magnetic interference, interference signal can be simultaneously amplified output end, the acquisition of primary current is just lost precisely
Degree, and the utility model wraps up the overcurrent of primary current when magnetic core acquires primary current signal by copper foils for shielding ring 5
The interference signal of copper bar periphery is introduced into the power ground of the pcb board 4 by copper bar by copper foil, and magnetic core acquisition is exactly
Pure copper bar current signal, the signal exported after late-class circuit amplifies is purely just the signal of primary current, to mention
Rise the detection accuracy of product.
Preferred embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, several deformations can also be made, improves and substitutes, this
Belong to the protection scope of the utility model.Therefore, the protection scope of the utility model patent should be with appended claims
It is quasi-.
Claims (4)
1. a kind of current sensor with copper foil shielding layer, including current sensor magnetic core (1) and the cladding current sense
The inside of the outer housing (2) of device magnetic core (1), the outer housing (2) opens up the shell mesoporous (21) of overcurrent copper bar, and feature exists
In, the current sensor magnetic core (1) be open-loop current sensor magnetic core, and opening in current sensor magnetic core (1)
Mouth gap setting hall sensing chip (3), the hall sensing chip (3) pass through chip connector (31) connecting PCB board (4), institute
State and be provided with plate hole on pcb board (4), and on the plate hole in be inserted in copper foils for shielding ring (5), the copper foils for shielding ring (5) is fixed
On the pcb board (4), and the copper foils for shielding ring (5) connects the power ground of the pcb board (4).
2. a kind of current sensor with copper foil shielding layer according to claim 1, it is characterised in that: the copper foil screen
Covering ring (5) includes copper foil ring body (51), copper foot (52), pin contacts (53) and the first bolt (54) for coating overcurrent copper bar, described
It is set in copper foil ring body (51) there are two the copper foot (52), the copper foot (52) is equipped with for penetrating first bolt (54)
Screw hole, the copper foot (52) is fixed on the pcb board (4) by first bolt (54), and in first spiral shell
The inner segment of bolt (54) is fixedly connected the pin contacts (53), and the pin contacts (53) and the power ground of the pcb board (4) electricity
Property connection.
3. a kind of current sensor with copper foil shielding layer according to claim 1, it is characterised in that: the pcb board
(4) the output end (41) of connection outer member and the adjusting potentiometer (42) for adjusting output parameter are equipped with.
4. a kind of current sensor with copper foil shielding layer according to claim 1, it is characterised in that: the outer housing
(2) attachment base for fixing (6) are equipped with, the attachment base (6) is equipped with bolt hole (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821807224.3U CN209215468U (en) | 2018-11-05 | 2018-11-05 | A kind of current sensor with copper foil shielding layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821807224.3U CN209215468U (en) | 2018-11-05 | 2018-11-05 | A kind of current sensor with copper foil shielding layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209215468U true CN209215468U (en) | 2019-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821807224.3U Active CN209215468U (en) | 2018-11-05 | 2018-11-05 | A kind of current sensor with copper foil shielding layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209215468U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730949A (en) * | 2020-12-21 | 2021-04-30 | 唐新颖 | High anti-interference Hall sensor |
| WO2023015475A1 (en) * | 2021-08-11 | 2023-02-16 | 威刚科技股份有限公司 | Current sensing module |
-
2018
- 2018-11-05 CN CN201821807224.3U patent/CN209215468U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730949A (en) * | 2020-12-21 | 2021-04-30 | 唐新颖 | High anti-interference Hall sensor |
| CN112730949B (en) * | 2020-12-21 | 2024-06-07 | 唐新颖 | High anti-interference Hall sensor |
| WO2023015475A1 (en) * | 2021-08-11 | 2023-02-16 | 威刚科技股份有限公司 | Current sensing module |
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