CN2758789Y - Fault monitoring circuit for Hall current sensor - Google Patents
Fault monitoring circuit for Hall current sensor Download PDFInfo
- Publication number
- CN2758789Y CN2758789Y CN 200420114935 CN200420114935U CN2758789Y CN 2758789 Y CN2758789 Y CN 2758789Y CN 200420114935 CN200420114935 CN 200420114935 CN 200420114935 U CN200420114935 U CN 200420114935U CN 2758789 Y CN2758789 Y CN 2758789Y
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- China
- Prior art keywords
- current sensor
- hall current
- coil
- monitoring circuit
- fault monitoring
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- Expired - Fee Related
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Abstract
The utility model provides a fault monitoring circuit for a hall current sensor, which comprises a hall current sensor, a coil wound on the hall current sensor, a power supply which is connected with the coil and is used for providing the electricity for the coil, and a monitoring circuit which is used for receiving an output signal of the hall current sensor. The monitoring circuit can detect the change amount of the output signal and compare the change amount with a preset value when the current is added on the coil. If the change amount and the preset value are not consistent with, an alert signal is sent out. Thereby, the utility model is convenient for a maintainer to maintain in real-time to find problems.
Description
Technical field
The utility model relates to a kind of Hall current sensor fault monitoring circuit, and it is used for some circuit that need make a decision and control according to the electric current that Hall current sensor detects.
Background technology
In Hall current sensor, there is circuit to exist, in actual the use fault of existence own take place or since with the outside be connected or current value that the circuit problem of outside causes detecting can be forbidden, so just obtain the current value of a mistake, if judge and control according to this wrong current value, then can occur judging and the control mistake, and might produce serious consequence therefrom.For example: in the intelligence communication power-supply system, the main equipment (programme-controlled exchange, GSM and CDMA etc.) of communication usefulness is an employing-48V DC-voltage supply,-48V DC voltage is to come by the alternating current conversion, when making AC outage-the 48V direct current do not interrupt, at the output terminal of power supply and connect accumulator, in order effectively accumulator to be managed the charging and discharging currents that needs the detecting battery, electric current according to battery will measure the capacity of battery, all fills and the judgement of floating charge and the actions such as restriction of charging current.Detecting not as battery current, criterion can cause corresponding judgment and control mistake, relevant work is undesired, can cause the lost of life of battery, the battery capacity deficiency, make power supply capacity descend, and might can not provide the serious consequence that causes communication disruption because of-48V direct current.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Hall current sensor fault monitoring circuit, and whether it can detect Hall current sensor and pairing circuit for detecting working properly exactly.
In order to solve the problems of the technologies described above, Hall current sensor fault monitoring circuit of the present utility model comprises Hall current sensor; Be wrapped in the coil on the Hall current sensor; Power supply is connected with described coil, is used to coil that power supply is provided; Supervisory circuit, it is used to receive the output signal of Hall current sensor, and when coil added electric current, described supervisory circuit can be detected this variation of output signals amount and compare with default value, as inconsistent, outputting alarm signal then.
On Hall current sensor, coil, and on coil by default electric current, the current signal that detects of Hall current sensor will add the electric current that this presets like this.Because the variation of battery current is slower comparatively speaking in the communication power supply, therefore, predetermined current one on coil adds, then just can detect corresponding electric current in the circuit and change, consistent as the variable quantity of electric current with default current value, illustrate that then Hall current sensor and pairing circuit for detecting are working properly, otherwise it is undesired then to work, will send corresponding warning information in the system like this, so that maintainer's real-time servicing is found problem.
Description of drawings
Fig. 1 is the fundamental diagram of an embodiment of Hall current sensor fault monitoring circuit of the present utility model.
Embodiment
Below in conjunction with Fig. 1 the principle of work of the utility model Hall current sensor fault monitoring circuit is described in detail:
As shown in Figure 1: Hall current sensor fault monitoring circuit of the present utility model comprises:
Hall current sensor 1;
Be wrapped in the coil 2 on the Hall current sensor 1;
When operate as normal, K switch is to be in off-state, be that electric current in the coil is zero, by the electric current on the Hall current sensor is I, when supervisory circuit makes K switch closed (common every certain interval of time closure once, or when doing a certain judgement), then there is current i to flow through in the coil, if the number of turns of coil is N, then the electric current to its increase of Hall current sensor equals N*i.
Because of Iout be with flow through Hall current sensor on electric current be directly proportional, promptly when K switch disconnects, Iout1=k*I (k is the conversion coefficient on the Hall current sensor), when K switch is closed, Iout2=k (I+Ni), the variation delta Iout=kNi of Iout.
When supervisory circuit made K switch closed, the output signal that supervisory circuit should detect on the Hall current sensor had increased kNi, and treatment circuit should increase by a fixed value for the signal of supervisory circuit.If supervisory circuit detects, illustrate that then Hall current sensor and corresponding circuit working are normal, if do not detect or deviation goes beyond the scope, Hall current sensor or corresponding circuit existing problems then are described, supervisory circuit is sent alarm signal prompting user and is handled at this moment, supervisory circuit stops some control action, in case serious consequence appears in locking system.
In this specific embodiment, described power supply is a current source, when K switch is closed, electric current on the coil is to equate (equaling i) with electric current on the current source, certainly, this power supply also can adopt voltage source, the current i=V/ on the described coil (R+r), R is the series resistor of equivalence on the voltage source, and r is the resistance on coil and the connecting line.
Claims (5)
1, a kind of Hall current sensor fault monitoring circuit comprises Hall current sensor (1), it is characterized in that, also comprises:
Be wrapped in the coil (2) on the Hall current sensor (1);
Power supply (3) is connected with described coil, is used to coil that power supply is provided;
Supervisory circuit (6), it is used to receive the output signal of Hall current sensor (1), and when coil added electric current, described supervisory circuit can be detected this variation of output signals amount and compare with default value, as inconsistent, outputting alarm signal then.
2, Hall current sensor fault monitoring circuit according to claim 1 is characterized in that, also comprises switch (4), and it is connected between described power supply and the coil.
3, Hall current sensor fault monitoring circuit according to claim 2 is characterized in that, described switch also is connected with supervisory circuit, the closed or disconnection of described supervisory circuit gauge tap.
4, Hall current sensor fault monitoring circuit according to claim 1, it is characterized in that also comprise treatment circuit (5), it is connected with Hall current sensor, be used to receive the output signal of Hall current sensor, and convert the signal that meets the supervisory circuit requirement to.
5, Hall current sensor fault monitoring circuit according to claim 1 is characterized in that, described power supply is current source or voltage source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114935 CN2758789Y (en) | 2004-12-28 | 2004-12-28 | Fault monitoring circuit for Hall current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114935 CN2758789Y (en) | 2004-12-28 | 2004-12-28 | Fault monitoring circuit for Hall current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2758789Y true CN2758789Y (en) | 2006-02-15 |
Family
ID=36078932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420114935 Expired - Fee Related CN2758789Y (en) | 2004-12-28 | 2004-12-28 | Fault monitoring circuit for Hall current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2758789Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087343A (en) * | 2009-12-02 | 2011-06-08 | 河南省电力公司许昌供电公司 | Method for rapidly monitoring fault of sampling device |
| CN104603631A (en) * | 2012-09-07 | 2015-05-06 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method and device for checking the plausibility of a current sensor measurement result |
| CN104730479A (en) * | 2013-12-18 | 2015-06-24 | 比亚迪股份有限公司 | Current sensor detection device and method |
| CN105717397A (en) * | 2016-04-08 | 2016-06-29 | 珠海格力电器股份有限公司 | Air conditioner communication fault detection method and system |
| CN105891757A (en) * | 2016-03-31 | 2016-08-24 | 中国电力科学研究院 | Open-loop Hall sensor measurement accuracy verification device and verification method thereof |
| JP2019174384A (en) * | 2018-03-29 | 2019-10-10 | Ntn株式会社 | Current sensor inspection device |
| CN111289928A (en) * | 2020-03-10 | 2020-06-16 | 无锡力芯微电子股份有限公司 | Hall device testing system and testing method |
| CN112858977A (en) * | 2021-01-06 | 2021-05-28 | 南京能晶电子科技有限公司 | Hall current sensor chip fault detection circuit and detection method |
-
2004
- 2004-12-28 CN CN 200420114935 patent/CN2758789Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087343B (en) * | 2009-12-02 | 2013-04-17 | 河南省电力公司许昌供电公司 | Method for rapidly monitoring fault of sampling device |
| CN102087343A (en) * | 2009-12-02 | 2011-06-08 | 河南省电力公司许昌供电公司 | Method for rapidly monitoring fault of sampling device |
| US9651586B2 (en) | 2012-09-07 | 2017-05-16 | Continental Teves Ag & Co. Ohg | Method and circuit for checking the plausibility of a current sensor measurement result |
| CN104603631A (en) * | 2012-09-07 | 2015-05-06 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method and device for checking the plausibility of a current sensor measurement result |
| CN104730479A (en) * | 2013-12-18 | 2015-06-24 | 比亚迪股份有限公司 | Current sensor detection device and method |
| CN104730479B (en) * | 2013-12-18 | 2018-09-07 | 比亚迪股份有限公司 | The detection device and method of current sensor |
| CN105891757A (en) * | 2016-03-31 | 2016-08-24 | 中国电力科学研究院 | Open-loop Hall sensor measurement accuracy verification device and verification method thereof |
| CN105717397A (en) * | 2016-04-08 | 2016-06-29 | 珠海格力电器股份有限公司 | Air conditioner communication fault detection method and system |
| CN105717397B (en) * | 2016-04-08 | 2018-12-11 | 珠海格力电器股份有限公司 | Air-conditioning communication fault detection method and system |
| JP2019174384A (en) * | 2018-03-29 | 2019-10-10 | Ntn株式会社 | Current sensor inspection device |
| JP7101014B2 (en) | 2018-03-29 | 2022-07-14 | Ntn株式会社 | Current sensor inspection device |
| CN111289928A (en) * | 2020-03-10 | 2020-06-16 | 无锡力芯微电子股份有限公司 | Hall device testing system and testing method |
| CN112858977A (en) * | 2021-01-06 | 2021-05-28 | 南京能晶电子科技有限公司 | Hall current sensor chip fault detection circuit and detection method |
| CN112858977B (en) * | 2021-01-06 | 2022-08-30 | 南京能晶电子科技有限公司 | Hall current sensor chip fault detection circuit and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060215 Termination date: 20121228 |