CN206559221U - Suitable for the filter of town and country cadastral information integration system - Google Patents
Suitable for the filter of town and country cadastral information integration system Download PDFInfo
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- CN206559221U CN206559221U CN201720250863.3U CN201720250863U CN206559221U CN 206559221 U CN206559221 U CN 206559221U CN 201720250863 U CN201720250863 U CN 201720250863U CN 206559221 U CN206559221 U CN 206559221U
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Abstract
The utility model discloses the filter suitable for town and country cadastral information integration system, including input protection circuit, electromagnetic interface filter, input rectifying wave filter, drain clamping protective circuit, high frequency transformer, output rectification filter device, biasing circuit, sample circuit, opto-coupled feedback circuit, single-chip switching power supply, input protection circuit, electromagnetic interface filter, input rectifying wave filter, drain clamping protective circuit, high frequency transformer, output rectification filter device is sequentially connected, biasing circuit, opto-coupled feedback circuit, single-chip switching power supply is sequentially connected, biasing circuit is connected with high frequency transformer, single-chip switching power supply is connected with drain electrode clamping protective circuit.The utility model uses input rectifying wave filter, drain electrode clamping protective circuit, output rectification filter device by AC conversion for direct current, while the storage of energy can be carried out, to ensure that Switching Power Supply maintains approximate galvanic current pressure to export；High-frequency harmonic and common mode output interference can also be reduced in less scope.
Description
Technical field
The utility model is related to cadastral information and integrates field, and in particular to suitable for the filter of town and country cadastral information integration system
Wave apparatus.
Background technology
Cadastral information includes the graph data of description soil space position and state, describes real estate ownership, the valencys such as soil
The attribute data of value etc..Cadastral information system:It is a topological space information system, including the input of figure, attribute data, deposits
The output and inquiry of storage, editor, display, spatial analysis, and both integrated treatment results, it is real by computer and interconnection platform
Existing data acquisition is integrated with renewal, picture and text showing is integrated, the networking of information system management.Switching Power Supply product is to integrate system
Necessary part in system.Because power electronic devices is in switch exchange state, cause to finally obtain is not preferably straight
Stream electricity, can have ripple.
Utility model content
Technical problem to be solved in the utility model is that the direct current of the conversion of integration system has ripple, it is therefore intended that
Filter suitable for town and country cadastral information integration system is provided, the ripple of the direct current of convert alternating current is preferably minimized limit
Degree, the close pure direct current for making it unlimited.
The utility model is achieved through the following technical solutions：
Suitable for the filter of town and country cadastral information integration system, including input protection circuit, electromagnetic interface filter, input
Rectifier filter, drain electrode clamping protective circuit, high frequency transformer, output rectification filter device, biasing circuit, sample circuit, optocoupler
Feedback circuit, single-chip switching power supply, the input protection circuit, electromagnetic interface filter, input rectifying wave filter, drain electrode clamper protection
Circuit, high frequency transformer, output rectification filter device are sequentially connected, the biasing circuit, opto-coupled feedback circuit, single-chip switching power supply
It is sequentially connected, the biasing circuit is connected with high frequency transformer, the single-chip switching power supply is connected with drain electrode clamping protective circuit.
85V-265V alternating current enters integration system through input protection circuit, and high direct voltage is obtained by foregoing circuit and component,
High direct voltage is exported to other equipment by output rectification filter device.
Further, input rectifying wave filter includes electric bridge BR and electrochemical capacitor C1, and the output end of the electric bridge BR is designated as
Node 1 and node 3；The positive pole of the electrochemical capacitor C1 is connected with electric bridge BR node 1, and the node 3 of its negative pole and electric bridge BR connects
Connect.
Further, high frequency transformer includes primary coil, secondary coil a, a secondary coil b.
Further, drain electrode clamping protective circuit includes voltage-stabiliser tube VDZ1 and diode VD1, the sun of the voltage-stabiliser tube VDZ1
Pole is connected with primary coil negative pole end, and its node is designated as node 7, and its negative electrode is connected with diode VD1 negative electrode；The diode
VD1 anode and the positive terminal of primary coil are connected, and its node is designated as node 8.
Further, output rectification filter device includes diode VD2 and electrochemical capacitor C2, the anode of the diode VD2
Secondary coil a positive terminal is connected to, its negative electrode is connected with electrochemical capacitor C2 positive terminal；Electrochemical capacitor C2 negative pole and secondary
Coil a negative pole connection.The need for meeting high-frequency rectification, diode VD2 uses Ultrafast recovery diode or the pole of Schottky two
Pipe.
Further, biasing circuit includes diode VD3 and electric capacity C3, the diode VD3 anode and secondary coil b
Positive pole connection；Electric capacity C3 one end is connected with secondary coil b negative pole, and its other end is connected with diode VD3 negative electrode.
Further, opto-coupled feedback circuit uses photo-coupler.
The utility model compared with prior art, has the following advantages and advantages：The utility model is using input
AC conversion is direct current by rectifier filter, drain electrode clamping protective circuit, high frequency transformer, output rectification filter device, together
When can carry out the storage of energy, to ensure that Switching Power Supply maintains approximate galvanic current pressure defeated in whole switch periods
Go out；High-frequency harmonic and common mode output interference can also be reduced in less scope.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structural representation；
Fig. 2 is the utility model electrical block diagram.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as limiting of the present utility model.
Embodiment
As shown in Figure 1, it is adaptable to the filter of town and country cadastral information integration system, including input protection circuit, EMI filter
Ripple device, input rectifying wave filter, drain electrode clamping protective circuit, high frequency transformer, output rectification filter device, biasing circuit, sampling
Circuit, opto-coupled feedback circuit, single-chip switching power supply, the input protection circuit, electromagnetic interface filter, input rectifying wave filter, drain electrode
Clamping protective circuit, high frequency transformer, output rectification filter device are sequentially connected, the biasing circuit, opto-coupled feedback circuit, monolithic
Switching Power Supply is sequentially connected, and the biasing circuit is connected with high frequency transformer, the single-chip switching power supply and drain electrode clamper protection
Circuit is connected.
Input rectifying wave filter includes electric bridge BR and electrochemical capacitor C1, the electric bridge BR output end are designated as node 1 and section
Point 3；The positive pole of the electrochemical capacitor C1 is connected with electric bridge BR node 1, and its negative pole is connected with electric bridge BR node 3.High frequency becomes
Depressor includes primary coil, secondary coil a, a secondary coil b.The clamping protective circuit that drains includes voltage-stabiliser tube VDZ1 and two poles
Pipe VD1, the anode of the voltage-stabiliser tube VDZ1 is connected with primary coil negative pole end, and its node is designated as node 7, its negative electrode and diode
VD1 negative electrode connection；The anode of the diode VD1 and the positive terminal of primary coil are connected, and its node is designated as node 8.Output
Rectifier filter includes diode VD2 and electrochemical capacitor C2, the diode VD2 anode are connected to secondary coil a positive pole
End, its negative electrode is connected with electrochemical capacitor C2 positive terminal；Electrochemical capacitor C2 negative pole is connected with secondary coil a negative pole.Biasing
Circuit includes diode VD3 and electric capacity C3, and the anode of the diode VD3 is connected with secondary coil b positive pole；Electric capacity C3 one end
It is connected with secondary coil b negative pole, its other end is connected with diode VD3 negative electrode.Opto-coupled feedback circuit uses photo-coupler.
As shown in Fig. 2 input node 2 and node 4 of the alternating current through electric bridge BR enter, 7 points of ingress is entered by node 1
Do not pass through voltage-stabiliser tube VDZ1, diode VD1 and primary coil；Switch K is metal-oxide-semiconductor, and its drain electrode is connected with the positive pole of primary coil,
The node 3 of its source electrode and electric bridge is connected, while electrochemical capacitor C4 negative pole is connected to switch K source electrode, electrochemical capacitor C4 is just
Pole is connected to switch K gate leve, and the emitter stage of the phototriode of photo-coupler is connected to electrochemical capacitor C4 positive pole, photosensitive three
The colelctor electrode of pole pipe is connected on the circuit that electric capacity C3 is connected with diode VD3 negative electrode；The light emitting diode of photo-coupler
Anode connects resistance R, and the other end at resistance R connecting luminous diodes end connects voltage-stabiliser tube VDZ2 anode, voltage-stabiliser tube VDZ2's
Negative electrode is connected on the circuit that diode VD2 is connected with electrochemical capacitor C2 positive pole, and the node is designated as node 14, and node 14 is defeated
Go out the positive terminal of DC voltage；The negative electrode of light emitting diode is connected to electrochemical capacitor C2 negative electrode, and the node is designated as node 13, section
Point 13 is the negative pole end of output direct current.
85~265V alternating currents obtain high direct voltage after input rectifying is filtered, and are connected to high frequency transformer primary coil
Negative terminal, the drain D of the positive termination metal-oxide-semiconductor of primary coil.
Drain in clamp protection circuits, voltage-stabiliser tube VDZ1 is using Transient Voltage Suppressor, diode VD1 using two poles of obstruction
The peak voltage that high frequency transformer leakage inductance is produced, can be limited within safe range, to metal-oxide-semiconductor by pipe when metal-oxide-semiconductor is turned off
Drain electrode plays a protective role.
The output voltage of secondary coil passes through diode VD2 rectifications, then acquisition direct current is defeated after electrochemical capacitor C2 filtering
Go out voltage Uo.The need for meeting high-frequency rectification, diode VD2 should use Ultrafast recovery diode or the pole of Schottky two
Pipe.
The system uses the opto-coupled feedback circuit with voltage-stabiliser tube.Reference voltage is provided by voltage-stabiliser tube VDZ2, works as output voltage
When Uo is fluctuated, error voltage can be obtained on the LED inside photo-coupler.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (7)
1. suitable for the filter of town and country cadastral information integration system, it is characterised in that filtered including input protection circuit, EMI
Ripple device, input rectifying wave filter, drain electrode clamping protective circuit, high frequency transformer, output rectification filter device, biasing circuit, sampling
Circuit, opto-coupled feedback circuit, single-chip switching power supply, the input protection circuit, electromagnetic interface filter, input rectifying wave filter, drain electrode
Clamping protective circuit, high frequency transformer, output rectification filter device are sequentially connected, the biasing circuit, opto-coupled feedback circuit, monolithic
Switching Power Supply is sequentially connected, and the biasing circuit is connected with high frequency transformer, the single-chip switching power supply and drain electrode clamper protection
Circuit is connected.
2. the filter according to claim 1 suitable for town and country cadastral information integration system, it is characterised in that described
Input rectifying wave filter includes electric bridge BR and electrochemical capacitor C1, and the output end of the electric bridge BR is designated as node 1 and node 3；It is described
Electrochemical capacitor C1 positive pole is connected with electric bridge BR node 1, and its negative pole is connected with electric bridge BR node 3.
3. the filter according to claim 1 suitable for town and country cadastral information integration system, it is characterised in that described
High frequency transformer includes primary coil, secondary coil a, a secondary coil b.
4. the filter according to claim 3 suitable for town and country cadastral information integration system, it is characterised in that described
The clamping protective circuit that drains includes voltage-stabiliser tube VDZ1 and diode VD1, the voltage-stabiliser tube VDZ1 anode and primary coil negative pole
End connection, its node is designated as node 7, and its negative electrode is connected with diode VD1 negative electrode；The anode of the diode VD1 and primary
The positive terminal connection of coil, its node is designated as node 8.
5. the filter according to claim 3 suitable for town and country cadastral information integration system, it is characterised in that described
Output rectification filter device includes diode VD2 and electrochemical capacitor C2, and the anode of the diode VD2 is connected to secondary coil a's
Positive terminal, its negative electrode is connected with electrochemical capacitor C2 positive terminal；Electrochemical capacitor C2 negative pole is connected with secondary coil a negative pole.
6. the filter according to claim 3 suitable for town and country cadastral information integration system, it is characterised in that described
Biasing circuit includes diode VD3 and electric capacity C3, and the anode of the diode VD3 is connected with secondary coil b positive pole；Electric capacity C3
One end is connected with secondary coil b negative pole, and its other end is connected with diode VD3 negative electrode.
7. the filter according to claim 1 suitable for town and country cadastral information integration system, it is characterised in that described
Opto-coupled feedback circuit uses photo-coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720250863.3U CN206559221U (en) | 2017-03-15 | 2017-03-15 | Suitable for the filter of town and country cadastral information integration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720250863.3U CN206559221U (en) | 2017-03-15 | 2017-03-15 | Suitable for the filter of town and country cadastral information integration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206559221U true CN206559221U (en) | 2017-10-13 |
Family
ID=60365438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720250863.3U Expired - Fee Related CN206559221U (en) | 2017-03-15 | 2017-03-15 | Suitable for the filter of town and country cadastral information integration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206559221U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655833A (en) * | 2017-03-15 | 2017-05-10 | 成都金广通科技有限公司 | Power supply filtering circuit of urban and rural cadastral information integration device on the basis of GIS (Geographic Information System) |
| CN110361033A (en) * | 2018-03-26 | 2019-10-22 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Essential safe type sensor for process automation |
-
2017
- 2017-03-15 CN CN201720250863.3U patent/CN206559221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655833A (en) * | 2017-03-15 | 2017-05-10 | 成都金广通科技有限公司 | Power supply filtering circuit of urban and rural cadastral information integration device on the basis of GIS (Geographic Information System) |
| CN110361033A (en) * | 2018-03-26 | 2019-10-22 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Essential safe type sensor for process automation |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 |