CN201364642Y - Carrier wave reception filtering circuit - Google Patents
Carrier wave reception filtering circuit Download PDFInfo
- Publication number
- CN201364642Y CN201364642Y CNU2009201141923U CN200920114192U CN201364642Y CN 201364642 Y CN201364642 Y CN 201364642Y CN U2009201141923 U CNU2009201141923 U CN U2009201141923U CN 200920114192 U CN200920114192 U CN 200920114192U CN 201364642 Y CN201364642 Y CN 201364642Y
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- Prior art keywords
- carrier wave
- voltage stabilizing
- stabilizing diode
- inductance
- capacitor
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- Expired - Fee Related
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- 238000001914 filtration Methods 0.000 title abstract 4
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 22
- 239000003990 capacitor Substances 0.000 abstract description 12
- 238000004891 communication Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model relates to a carrier wave reception filtering circuit which is mainly applied to a low-voltage power line carrier wave communication system and particularly applicable to a carrier wave electric meter. The carrier wave reception filtering circuit comprises a resistor, a first inductor, a second inductor, a first capacitor, a second capacitor, a first voltage stabilizing diode and a second voltage stabilizing diode, wherein the resistor, the first inductor and the first capacitor are sequentially connected in series; and the second capacitor, the second inductor, the first voltage stabilizing diode and the second voltage stabilizing diode are sequentially connected in parallel. The carrier wave reception filtering circuit has reasonable structure, stable operation, high signal receiving sensitivity and strong receiving capacity, and can effectively protect carrier wave modem chips.
Description
Technical field
The utility model relates to a kind of carrier wave circuit that accepts filter, and is mainly used in the low-voltage powerline carrier communication system, is particularly suitable for being applied to carrier power meter.
Background technology
Low-voltage powerline carrier communication is meant and utilizes existing power distribution network as transmission medium, realizes a kind of technology of data transfer and message exchange.Because low-voltage powerline carrier communication does not need rewiring, with low cost, therefore received great concern in fields such as intelligent home network and broadband accesss.A lot of at this technical product of developing or improving out, carrier power meter is exactly a more typical product.
Carrier power meter is exactly the ammeter with carrier meter reading function.In recent years, ammeter manufacturer in all parts of the country is the requirement of satisfying power supply administration, has designed carrier meter reading and RS485 checks meter.Carrier meter reading is that a carrier chip is installed in table, a platform is installed is then become and integrated reading device.Check meter is after by computer signal being sent to integrated reading device, integrated reading device sends signal to carrier chip by line of electric force, after the carrier chip action data are returned the integrated reading device storage by line of electric force, can data be withered from integrated reading device with computer when waiting user to need data.
In the low-voltage powerline carrier communication system, must use the carrier wave circuit that accepts filter; carrier wave accepts filter, and circuit is general can be connected with carrier wave conciliation chip; and the carrier wave of the prior art circuit fluctuation of service that accepts filter can not protect carrier wave to reconcile chip well.
The utility model content
Technical problem to be solved in the utility model is to overcome existing above-mentioned shortcoming in the prior art and a kind of reasonable in design, carrier wave stable, that can effectively protect carrier wave the to reconcile chip circuit that accepts filter is provided.
The technical scheme in the invention for solving the above technical problem is: a kind of carrier wave circuit that accepts filter is characterized in that: comprise resistance, first inductance, second inductance, first electric capacity, second electric capacity, first voltage stabilizing diode and second voltage stabilizing diode; Resistance, first inductance and first electric capacity are connected successively, and second electric capacity, second inductance, first voltage stabilizing diode and second voltage stabilizing diode are in parallel successively.
The resistance value of resistance described in the utility model is 0.62k Ω.
The inductance value of first inductance described in the utility model is 1nH, and the inductance value of described second inductance is 100uH.
The electric capacity of the utility model first electric capacity is 330pF, and the electric capacity of described second electric capacity is 3.3nF.
The utility model compared with prior art has the following advantages and effect: 1, rational in infrastructure, stable; 2, signal receiving sensitivity height, the receiving ability ability is strong; 3, can effectively protect carrier wave to reconcile chip.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and by embodiment.
Embodiment:
Referring to Fig. 1, the utility model comprises resistance R, first inductance L
1, second inductance L
2, first capacitor C
1, second capacitor C
2, the first voltage stabilizing diode T
1With the second voltage stabilizing diode T
2Resistance R, first inductance L
1With first capacitor C
1Series connection successively, second capacitor C
2, second inductance L
2, the first voltage stabilizing diode T
1With the second voltage stabilizing diode T
2In parallel successively, the first voltage stabilizing diode T
1The positive pole and the second voltage stabilizing diode T
2Negative pole connects.Vss indication circuit common ground terminal voltage.
The resistance value of resistance R is 0.62k Ω, plays the effect of current limliting.
First inductance L
1Inductance value be 1nH, second inductance L
2Inductance value be 100uH.
First capacitor C
1Electric capacity be 330pF, it is withstand voltage should to be not less than 50V; Second capacitor C
2Electric capacity be 3.3nF.
The first voltage stabilizing diode T
1With the second voltage stabilizing diode T
2Rated voltage is 2V, and effect is to utilize the characteristics of its forward conduction voltage drop to come the signal clamper in certain scope, thus protection carrier wave demodulation chip.
The utility model is reconciled chip (not drawing among the figure) at M end and carrier wave and is connected, and is connected with coupling transformer (not drawing among the figure) at the N end.The M end is signal output part, and the N end is signal input part.Signal is by the secondary taking-up of coupling transformer, through the resistance R current limliting, respectively by first inductance L
1With first capacitor C
1The series circuit and second inductance L formed
2With second capacitor C
2Form the antiresonant circuit frequency-selecting, again by the first voltage stabilizing diode T
1With the second voltage stabilizing diode T
2Amplitude limit about 2.5V, is delivered to the signal voltage clamper carrier wave demodulation chip at last and is handled with signal.
Claims (4)
1, a kind of carrier wave circuit that accepts filter is characterized in that: comprise resistance, first inductance, second inductance, first electric capacity, second electric capacity, first voltage stabilizing diode and second voltage stabilizing diode; Resistance, first inductance and first electric capacity are connected successively, and second electric capacity, second inductance, first voltage stabilizing diode and second voltage stabilizing diode are in parallel successively.
2, the carrier wave according to claim 1 circuit that accepts filter, it is characterized in that: the resistance value of described resistance is 0.62k Ω.
3, the carrier wave according to claim 1 circuit that accepts filter, it is characterized in that: the inductance value of described first inductance is 1nH, the inductance value of described second inductance is 100uH.
4, the carrier wave according to claim 1 circuit that accepts filter, it is characterized in that: the electric capacity of described first electric capacity is 330pF, the electric capacity of described second electric capacity is 3.3nF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201141923U CN201364642Y (en) | 2009-02-26 | 2009-02-26 | Carrier wave reception filtering circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201141923U CN201364642Y (en) | 2009-02-26 | 2009-02-26 | Carrier wave reception filtering circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201364642Y true CN201364642Y (en) | 2009-12-16 |
Family
ID=41475312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201141923U Expired - Fee Related CN201364642Y (en) | 2009-02-26 | 2009-02-26 | Carrier wave reception filtering circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201364642Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539720A (en) * | 2018-03-08 | 2018-09-14 | 华北电力大学扬中智能电气研究中心 | A kind of carrier module, intelligent electric meter and Signal Regulation method, system |
| CN109308797A (en) * | 2018-10-30 | 2019-02-05 | 国网北京市电力公司 | Data transmission system and method |
| CN111614366A (en) * | 2020-03-31 | 2020-09-01 | 芜湖宏景电子股份有限公司 | Amplitude limiting protection circuit for antenna end of vehicle-mounted radio |
-
2009
- 2009-02-26 CN CNU2009201141923U patent/CN201364642Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539720A (en) * | 2018-03-08 | 2018-09-14 | 华北电力大学扬中智能电气研究中心 | A kind of carrier module, intelligent electric meter and Signal Regulation method, system |
| CN109308797A (en) * | 2018-10-30 | 2019-02-05 | 国网北京市电力公司 | Data transmission system and method |
| CN111614366A (en) * | 2020-03-31 | 2020-09-01 | 芜湖宏景电子股份有限公司 | Amplitude limiting protection circuit for antenna end of vehicle-mounted radio |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUANG SHUMEI Free format text: FORMER OWNER: ZHEJIANG TIANCHENG ELECTRIC POWER WAVE CARRIER CO., LTD. Effective date: 20130220 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Shumei Inventor before: Feng Yuxiang Inventor before: Dong Yuebao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: FENG YUXIANG DONG YUEBAO TO: HUANG SHUMEI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130220 Address after: 1601, room 310039, Zhejiang Daily News Building, 178 Stadium Road, Hangzhou, Zhejiang Patentee after: Huang Shumei Address before: 310039 No. 2506, Zhejiang Daily News Building, 178 Stadium Road, Xiacheng District, Hangzhou, Zhejiang Patentee before: Zhejiang Tiancheng Electric Power Carrier Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20140226 |