CN200989919Y - Electric current monitor for power station - Google Patents
Electric current monitor for power station Download PDFInfo
- Publication number
- CN200989919Y CN200989919Y CN 200620124904 CN200620124904U CN200989919Y CN 200989919 Y CN200989919 Y CN 200989919Y CN 200620124904 CN200620124904 CN 200620124904 CN 200620124904 U CN200620124904 U CN 200620124904U CN 200989919 Y CN200989919 Y CN 200989919Y
- Authority
- CN
- China
- Prior art keywords
- current
- shunt resistance
- radio station
- amplifier
- utility
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a current detecting amplifier. A shunt resistance is connected in series or in parallel with the power and working modules of a working transmitter receiver. The current sample of shunt resistance is amplified and output by the amplifier to the main controller of the transmitter receiver. The current sample of the shunt resistance is the input end when the voltage signal is input the amplifier. The current detecting amplifier of the utility model inputs a value to the main controller, and the current state can be monitored when the transmitter receiver is working at any time according to the value. The utility model can send out a warning message and inform relevant circuit to work when the current is abnormal, for example, the current is oversized and needs overcurrent protection; the utility model can give indicating message when the power supply of the battery is not enough and so on, thereby improving the protecting function of the transmitter receiver, making the user more convenient and improving the reliability of the transmitter receiver.
Description
Technical field
A kind of novel radio station current monitor that the utility model relates to.
Background technology
The mobile station in past has only simple monitoring voltage function usually; but never have good current surveillance function; adopt the drawback of the current detector of universal amplifier to be: because the universal amplifier offset voltage is higher; for improving degree of accuracy and resolution; need to adopt bigger shunt resistance; this will produce insufferable pressure drop; can increase the power consumption in radio station simultaneously; therefore; the overcurrent protection of mobile station adopts the electric current fuse to realize mostly, and power supply detects the detection that also only is confined to supply voltage.
Summary of the invention
The utility model purpose is: propose a kind of New type of current detecting amplifier, this amplifier offset voltage is low, sensing range is wide, oneself power consumption is low, only need get final product the standby current size on the shunt resistance of milliohm level, the current value of sampling is given the radio station master controller, and the current status when master controller can be worked to the radio station at any time according to this value monitors.
Current sense amplifier, between each operational module in power supply and use radio station, serial or parallel connection one shunt resistance, the current sampling of this shunt resistance amplifies through amplifier, amplifies output and connects the radio station master controller.
The shunt resistance current sampling is the input end of voltage signal input amplifier.
5-100m Ω got by the shunt resistance of series connection or a shunt resistance in parallel is got 50-200K Ω.The shunt resistance of getting series connection is sensitive.
Enforcement principle of the present utility model is: power supply (or electric battery) provides each modular power source of radio station to supply with; current sinking has the small voltage difference on the shunt resistance of serial connection; this sampling voltage difference offers current sense amplifier; this amplifier has minimum offset voltage detectability; can carry out voltage amplification to small sampling voltage difference up to 50 times; the amplification magnitude of voltage of amplifier output is given the radio station master controller; master controller is judged radio station current work situation according to the variation of this value; excessive or when departing from normal value when electric current; master controller will provide warning information, and make the corresponding protection treatment measures.
After the utility model current sense amplifier inputs to master controller; current status in the time of can working to the radio station at any time according to this value monitors; when current anomaly such as the excessive need of electric current carry out overcurrent protection, provide warning information and notify interlock circuit work; when the powered battery electric weight is not enough, can provide information or the like; thereby promote the defencive function in radio station; be user-friendly to, improve the radio station reliability.
Description of drawings
Fig. 1 is the utility model block diagram
Fig. 2 is a circuit diagram of the present utility model
Embodiment
Enforcement block diagram of the present utility model is seen Fig. 1.
Concrete technology implementation method of the present utility model as shown in Figure 2.
As shown in the figure, power supply (or electric battery) is before supplying with each module of radio station, be serially connected with fuse in the circuit, detect resistance with the shunting of 10 milliohms, radio station current sinking this shunt resistance of flowing through, to produce small electric pressure reduction, if current sinking is 5 amperes during the emission of radio station, then Qu Yang voltage difference is 50 millivolts, and this sampling voltage difference offers current sense amplifier LT6100, and this amplifier has minimum offset voltage detectability, can detect the offset voltage that is low to moderate 300 microvolts, and, can carry out up to 50 times voltage amplification, therefore small sampling voltage difference, the amplification magnitude of voltage of this amplifier output is 2.5 volts at this moment, this value is given the radio station master controller, master controller should value and the radio station normal value compare, thereby can judge whether radio station current work situation normal.
The application practice of this utility model on the radio station proves: this current detector can effectively monitor the current status in radio station; provide information when electric current is excessive when launching for the radio station, the radio station is in time protected, thereby; the radio station can be grasped its working condition at any time more accurately, improves the radio station reliability.
Claims (3)
1. the current monitor in a radio station, it is characterized in that being provided with current sense amplifier, promptly at power supply with use between each operational module in radio station serial or parallel connection one shunt resistance, the current sampling of this shunt resistance amplifies through amplifier, amplifies output and connects the radio station master controller.
2. the current monitor in radio station according to claim 1 is characterized in that the shunt resistance current sampling is the input end of voltage signal input amplifier.
3, the current monitor in radio station according to claim 1 is characterized in that the shunt resistance of connecting is got 5-100m Ω or a shunt resistance in parallel is got 50-200K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124904 CN200989919Y (en) | 2006-11-02 | 2006-11-02 | Electric current monitor for power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124904 CN200989919Y (en) | 2006-11-02 | 2006-11-02 | Electric current monitor for power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989919Y true CN200989919Y (en) | 2007-12-12 |
Family
ID=38940956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620124904 Expired - Fee Related CN200989919Y (en) | 2006-11-02 | 2006-11-02 | Electric current monitor for power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989919Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078300A (en) * | 2012-12-31 | 2013-05-01 | 山西科达自控工程技术有限公司 | Mine intrinsic safety lithium battery power supply system |
| CN103217565A (en) * | 2013-03-28 | 2013-07-24 | 国家电网公司 | Current sensor and implementing method thereof based on alloy resistor |
| CN111537793A (en) * | 2020-05-26 | 2020-08-14 | 惠州Tcl移动通信有限公司 | Power consumption testing method and system of mobile terminal |
-
2006
- 2006-11-02 CN CN 200620124904 patent/CN200989919Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078300A (en) * | 2012-12-31 | 2013-05-01 | 山西科达自控工程技术有限公司 | Mine intrinsic safety lithium battery power supply system |
| CN103078300B (en) * | 2012-12-31 | 2016-03-30 | 山西科达自控股份有限公司 | Mine intrinsic safety lithium battery power supply system |
| CN103217565A (en) * | 2013-03-28 | 2013-07-24 | 国家电网公司 | Current sensor and implementing method thereof based on alloy resistor |
| CN103217565B (en) * | 2013-03-28 | 2016-05-25 | 国家电网公司 | A kind of current sensor and its implementation based on resistance alloys |
| CN111537793A (en) * | 2020-05-26 | 2020-08-14 | 惠州Tcl移动通信有限公司 | Power consumption testing method and system of mobile terminal |
| CN111537793B (en) * | 2020-05-26 | 2023-02-28 | 惠州Tcl移动通信有限公司 | Power consumption testing method and system of mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: NANJING PANDA ELECTRONICS CO., LTD ^ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Nanjing Panda Electronic Limited by Share Ltd Number: 50 Page: The title page Volume: 23 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Nanjing Panda Electronic Limited by Share Ltd Number: 50 Volume: 23 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ^ TO: NANJING PANDA ELECTRONICS CO., LTD ^ |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |