CN105759102A - Hall current sensor employing wireless signal output - Google Patents
Hall current sensor employing wireless signal output Download PDFInfo
- Publication number
- CN105759102A CN105759102A CN201610097452.5A CN201610097452A CN105759102A CN 105759102 A CN105759102 A CN 105759102A CN 201610097452 A CN201610097452 A CN 201610097452A CN 105759102 A CN105759102 A CN 105759102A
- Authority
- CN
- China
- Prior art keywords
- circuit
- hall element
- linear hall
- output
- wireless communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A Hall current sensor employing wireless signal output comprises a power supply circuit, a magnetic core, a linear Hall element, an analog signal conditioning circuit, an AD sampling circuit, a single-chip microcomputer, a wireless communication circuit, and a wireless communication antenna. The input of the power supply circuit is a direct-current power source or a battery, and the output is connected to the linear Hall element, and is transmitted to the wireless communication circuit after passing through the AD sampling circuit and the single-chip microcomputer. The analog signal conditioning circuit is powered by the direct-current power source or the battery. The magnetic core gathers the magnetic field produced by current. The linear Hall element is placed in the gap of the magnetic core, and the linear Hall element senses the intensity of the magnetic field and outputs a corresponding voltage signal. The analog signal conditioning circuit amplifies a voltage output by the linear Hall element, and adjusts the voltage signal to a level needed by the AD sampling circuit. The AD sampling circuit converts the voltage output by the analog signal conditioning circuit into a digital signal.
Description
Technical field
The present invention relates to electronic circuit field, it is in particular to a kind of Hall current sensor adopting wireless mode output signal.
Background technology
Current wireless communication technology is fast-developing, particularly becomes the tendency of the day with the sensor of WSN (wireless sensor network) technological development, and the sensor more and more connected in a wired fashion is replaced by wireless senser.The sensor of wire communication mode has the disadvantage in that in some applications
1, installation wiring difficulty, it is sometimes desirable to lay dedicated pipeline, installation cost is high, even can not use in some occasion that cannot connect up.
2, the interim occasion used, assembling and disassembling is wasted time and energy.
3, need common source between multiple sensors or altogether, electrical equipment isolation is difficult, causes interfering between sensor.
Adopt the sensor of wireless signal output, it is possible to accomplish that plug and play, assembling and disassembling is time saving and energy saving without wiring.And the electrical equipment between each sensor completely isolated connects, it is to avoid interfere.
Summary of the invention
It is an object of the invention to, it is provided that a kind of Hall current sensor with wireless signal output, solve to install and use cost height, it is impossible to can not use during wiring, the easy temperature influence that interferes between isolation sensor and be wirelessly transferred and inaccurate problem.
For reaching above-mentioned purpose, the technical scheme is that, a kind of Hall current sensor exported with wireless signal, including: power supply circuits, magnetic core, linear hall element, analog signal conditioner circuit, AD sample circuit, single-chip microcomputer, wireless communication line, antenna；Power supply circuits are DC source or the battery of input linear Hall element, and the output of linear hall element connects analog signal conditioner circuit, AD sample circuit, single-chip microcomputer successively；AD sample circuit, single-chip microcomputer and wireless communication line.Linear hall element induced field intensity exports corresponding voltage signal.Analog signal conditioner circuit amplifies the voltage of linear hall element output, and voltage signal adjusts the level that AD sample circuit needs.The voltage that analog signal conditioner circuit exports is converted to digital signal by AD sample circuit.Being provided with environment temperature sensor, single-chip microcomputer receives the digital signal of AD sample circuit output, and gathers current environmental temperature, and query argument table does corresponding compensating approach, and revised data are sent to wireless communication line.The digital signal that wireless communication line modulation single-chip microcomputer is sent, is sent for wireless receiver reception related data with electromagnetic wave by antenna.Analog signal conditioner circuit is powered by DC source (or battery).The magnetic field that magnetic core aggregate current produces, linear hall element is positioned in gap.
There is advantages that
1, adopt wireless mode send sensor signal, it is not necessary to wiring, easy to install fast.
2, adopting digital form to process signal, the compensating approach of temperature signal is very convenient, it is possible to improve the precision of sensor output signal.
3, battery or independent current source can be used to power, connect without any electrical equipment between sensor, interfering between each sensor completely isolated.
4, all elements adopt technical grade components and parts, have very wide operating temperature range, can reach-40 DEG C～+85 DEG C.
The present invention modulates, by wireless communication line, the digital signal that single-chip microcomputer is sent, and is sent for wireless receiver reception related data with electromagnetic wave by antenna.Analog signal conditioner circuit is powered by DC source (or battery).The magnetic field that magnetic core aggregate current produces, linear hall element is positioned in gap.The output valve of the stable Hall current sensor with temperature revision amount is needed in particular for electric power, aviation etc..Single-chip microcomputer is adopted to carry out sampled data compensation and correction, output signal is brought up to good precision, adopting wireless communication mode to greatly improve the convenience that sensor uses, the electrical equipment between completely isolated sensor connects and avoids interfering between sensor.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the wireless signal output Hall current sensor of the embodiment of the present invention.
Fig. 2 is the circuit diagram of the sensor in Fig. 1.
Fig. 3 is the workflow diagram of the single-chip microcomputer in Fig. 1.
Detailed description of the invention
In order to know more about the technology contents of the present invention, especially exemplified by specific embodiment and to coordinate institute accompanying drawings to illustrate as follows
Fig. 1 is the theory diagram of the wireless signal output Hall current sensor of the embodiment of the present invention.As it is shown in figure 1, sensor includes power supply circuits, magnetic core, linear hall element, analog signal conditioner circuit, AD sample circuit, single-chip microcomputer, wireless communication line, antenna.The magnetic field that magnetic core aggregate current produces, linear hall element is positioned in gap, and linear hall element induced field intensity exports corresponding voltage signal.Analog signal conditioner circuit amplifies the voltage of linear hall element output, and voltage signal adjusts the level that AD sample circuit needs.The voltage that analog signal conditioner circuit exports is converted to digital signal by AD sample circuit.Single-chip microcomputer receives the digital signal of AD sample circuit output, and gathers current environmental temperature, and the data collected are done corresponding compensating approach by query argument table, and revised data are sent to wireless communication line.The wireless antenna that signal after modulation is sent by wireless communication line, is sent in the air with means of electromagnetic waves, receives for rear end receiver.Analog signal conditioner circuit is powered by external power source.
Fig. 2 is the circuit diagram of the sensor in Fig. 1.nullTechnical grade chip selected by all components and parts，Operating temperature range can reach-40 DEG C～+85 DEG C，Power for current sensor with+12V DC source (or battery)，+ 12V power supply gives linear hall element after three-terminal voltage-stabilizing chip voltage stabilizing、△ Σ AD conversion chip、Single-chip microcomputer、Wireless communication line is powered，+ 12V power supply is powered directly to discharge circuit，The weak voltage signals of linear hall element output is connected to discharge circuit，Signal is connected to AD conversion chip after discharge circuit amplifies，AD conversion chip is converted analog signals into digital signal by Single-chip Controlling，Digital data transmission is to single-chip microcomputer，Single-chip microcomputer sends a signal to wireless communications chips after carrying out a series of computing，It is sent to antenna end after the data modulation that single-chip microcomputer is exported by wireless communications chips，Modulated signal is sent in the air by antenna with electromagnetic wave，Receive for the corresponding equipment that receives.
Fig. 3 is the workflow diagram of the single-chip microcomputer in Fig. 1.First single-chip microcomputer carries out system initialization, controls AD sampling A/D chip and gathers current signal, then controls to gather ambient temperature data, then does compensation data correction, the packing of collection data is added check bit, finally collection data is sent to wireless communications chips.Ambient temperature is carried out compensation data, adopts and form does compensation data correction, it is possible to all set a compensation dosage (use a period of time, parameter correction can be carried out such as 3M) in the interval of every 0.2-0.5 DEG C.
In sum, the wireless signal output Hall current sensor of the present invention has very wide operating temperature range, can reach-40 DEG C～+85 DEG C.Single-chip microcomputer is adopted to carry out sampled data compensation and correction, output signal is brought up to good precision, adopting wireless communication mode to greatly improve the convenience that sensor uses, the electrical equipment between completely isolated sensor connects and avoids interfering between sensor.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (2)
1. the Hall current sensor of a wireless signal output, it is characterised in that including: power supply circuits, magnetic core, linear hall element, analog signal conditioner circuit, AD sample circuit, single-chip microcomputer, wireless communication line, wireless communication antenna；The input of power supply circuits is DC source or battery, and output is connected to linear hall element, transports to wireless communication line after AD sample circuit, single-chip microcomputer；Analog signal conditioner circuit is powered by DC source or battery；The magnetic field that magnetic core aggregate current produces, linear hall element is positioned in gap, and linear hall element induced field intensity exports corresponding voltage signal；Analog signal conditioner circuit amplifies the voltage of linear hall element output, and voltage signal adjusts the level that AD sample circuit needs；The voltage that analog signal conditioner circuit exports is converted to digital signal by AD sample circuit.
2. the Hall current sensor of wireless signal according to claim 1 output, it is characterized in that, it is provided with environment temperature sensor, single-chip microcomputer receives the digital signal of AD sample circuit output, and receive collection current environmental temperature sensor signal, digital signal is done corresponding compensating approach by inquiry temperature parameter table, and revised data are sent to wireless communication line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097452.5A CN105759102A (en) | 2016-02-23 | 2016-02-23 | Hall current sensor employing wireless signal output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097452.5A CN105759102A (en) | 2016-02-23 | 2016-02-23 | Hall current sensor employing wireless signal output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105759102A true CN105759102A (en) | 2016-07-13 |
Family
ID=56331115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610097452.5A Pending CN105759102A (en) | 2016-02-23 | 2016-02-23 | Hall current sensor employing wireless signal output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105759102A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413893A (en) * | 2020-03-02 | 2020-07-14 | 国网江苏省电力有限公司电力科学研究院 | Wireless current acquisition system for starting debugging of ultra-high voltage power transmission and transformation project |
| US20220283214A1 (en) * | 2021-03-05 | 2022-09-08 | Eaton Intelligent Power Limited | Leakage Current Detection in Cable Tray |
| CN115541983A (en) * | 2022-11-24 | 2022-12-30 | 南京中旭电子科技有限公司 | Hall current sensor with digital signal output |
-
2016
- 2016-02-23 CN CN201610097452.5A patent/CN105759102A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413893A (en) * | 2020-03-02 | 2020-07-14 | 国网江苏省电力有限公司电力科学研究院 | Wireless current acquisition system for starting debugging of ultra-high voltage power transmission and transformation project |
| CN111413893B (en) * | 2020-03-02 | 2023-11-03 | 国网江苏省电力有限公司电力科学研究院 | Wireless current collection system for starting and debugging of ultra-high voltage power transmission and transformation project |
| US20220283214A1 (en) * | 2021-03-05 | 2022-09-08 | Eaton Intelligent Power Limited | Leakage Current Detection in Cable Tray |
| US11914000B2 (en) * | 2021-03-05 | 2024-02-27 | Eaton Intelligent Power Limited | Leakage current detection in cable tray |
| CN115541983A (en) * | 2022-11-24 | 2022-12-30 | 南京中旭电子科技有限公司 | Hall current sensor with digital signal output |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105738685A (en) | Hall current sensor of digital signal output | |
| CN103094995B (en) | Wireless Power Transmission Device | |
| CN105759102A (en) | Hall current sensor employing wireless signal output | |
| CN102590574A (en) | Digital current transformer based on induction power supply and monitoring method for digital current transformer | |
| US11722011B2 (en) | Systems and methods for receiver beaconing in wireless power systems | |
| JP5827755B2 (en) | Process control field device with circuit protection | |
| CN113300461A (en) | Intelligent distribution box and intelligent distribution system | |
| CN107657801A (en) | A kind of data collection and transfering system based on LORA | |
| CN103995526A (en) | Power supply controller analog parameter calibration system and method based on CAN buses | |
| CN206019815U (en) | A kind of digital weighing sensor is wirelessly transferred based on wireless charging technology | |
| CN103728941A (en) | Material level monitoring method and equipment | |
| CN104502713A (en) | Low-power-consumption conductivity sensor applied to wireless transmission system | |
| CN103903845A (en) | Passive wireless current transformer | |
| CN207752621U (en) | A kind of data collection and transfering system based on LORA | |
| CN207114612U (en) | A kind of differential signal linear isolation converting means suitable for mesohigh sensing | |
| CN102636192A (en) | Input/output (I/O) programmable setting intelligent transmitter | |
| CN210534228U (en) | Portable voltage monitoring wireless log recording device | |
| CN207923984U (en) | A kind of wireless Rogowski coil integrator | |
| CN203377876U (en) | Zigbee wireless communication module | |
| KR102041631B1 (en) | Power measuring system | |
| CN102305670A (en) | Thermocouple temperature transducer in real-time wireless communication industry | |
| CN211554112U (en) | Direct current electric quantity metering system | |
| CN206685970U (en) | Intelligent heavy current managing device | |
| CN216121918U (en) | Intelligent distribution box and intelligent distribution system | |
| CN105739362A (en) | Transformer station measurement and control protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |
|
| RJ01 | Rejection of invention patent application after publication |