CN203798884U - Novel voltage divider - Google Patents
Novel voltage divider Download PDFInfo
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- CN203798884U CN203798884U CN201420208125.9U CN201420208125U CN203798884U CN 203798884 U CN203798884 U CN 203798884U CN 201420208125 U CN201420208125 U CN 201420208125U CN 203798884 U CN203798884 U CN 203798884U
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- partial pressure
- pressure unit
- voltage
- sampling resistor
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Abstract
The utility model discloses a voltage divider, comprising a voltage dividing assembly, a sampling resistor, a controller, communication members and an output member. The voltage dividing assembly comprises N dividing voltage units which are connected in series, wherein N is from 2-100; the cathode of the previous voltage dividing unit is connected to the anode of the later voltage dividing unit; the anode of the first voltage dividing unit is connected to an external high voltage input wire; the cathode of the last voltage dividing unit is connected to one end of the sampling resistor; and the other end of the sampling resistor is connected to the ground. The voltage dividing unit comprises a voltage dividing resistor and a switch member which is connected to the voltage dividing resistor in parallel and is connected to the controller through the communication member; and the two ends of the sampling resistor is connected to the controller and the output member. The novel voltage divider is simple in structure, the series connection of voltage dividing units in various quantities can be achieved by controlling the switch member to be switched on and off through the controlling member and thus the total resistance in the voltage dividing assembly can be controlled. The voltage division ratio can be automatically adjusted according to the measured voltage, and the practicability is good.
Description
Technical field
The utility model relates to voltage divider field, and especially, relating to a kind of intrinsic standoff ratio can carry out the novel voltage divider automatically changing according to tested voltage.
Background technology
Voltage divider is that in actual life, application is more extensive by the basic measurement device of tested voltage scale step-down sampling.
Existing voltage divider is divided into two kinds of resistance-type and condenser types, and respectively as shown in Figure 1 and Figure 2, its high terminal impedance is intrinsic standoff ratio with the ratio of low terminal impedance.In the time that tested voltage ratio is higher, high-end resistance is larger, and intrinsic standoff ratio is also larger; When tested voltage ratio is lower, high-end resistance is less, and intrinsic standoff ratio is also less.
Existing voltage divider is all generally the intrinsic standoff ratio suitable according to the maximum selection rule of tested voltage, and its intrinsic standoff ratio can not be too little, thereby otherwise point too high range that exceeds detecting instrument of the detection voltage extruding possibility; Its intrinsic standoff ratio can not be too large, thereby otherwise point too low reduction accuracy of detection of the detection voltage extruding possibility, because once voltage divider chooses, its intrinsic standoff ratio just can not change, so in the time of tested voltage wide variation, especially tested voltage is during far below maximal value, and measuring accuracy can reduce greatly.
Therefore, design that a kind of structure is simplified and the freely regulated voltage divider of dividing potential drop specific energy is significant.
Utility model content
The utility model object is to provide a kind of structure to simplify, and its intrinsic standoff ratio can carry out the novel voltage divider automatically changing according to tested voltage, and concrete technical scheme is as follows:
A kind of novel voltage divider, comprises dividing potential drop assembly, sampling resistor, controller, communication component and output block;
Described dividing potential drop assembly comprises N partial pressure unit of series connection successively, and N is 2-100; The negative pole of previous described partial pressure unit is connected with the positive pole of a rear described partial pressure unit, described in first, the positive pole of partial pressure unit is connected with extraneous high input voltage line, described in last, the negative pole of partial pressure unit connects one end of described sampling resistor, the other end ground connection of described sampling resistor;
Described partial pressure unit comprises divider resistance and switch block, and described switch block is in parallel with described divider resistance, and is connected with described controller by described communication component;
The two ends of described sampling resistor are all connected with described controller and output block.
Preferred in above technical scheme, described switch block comprises insulated gate bipolar transistor or metal-oxide layer semiconductcor field effect transistor.
Preferred in above technical scheme, described switch block comprises first component, second component and driver part; Described first component is identical with the structure of described second component, and includes body diode, D end, S end and G end, and the D end of described first component is connected with the positive pole of described partial pressure unit, and its S end is connected with the S end of described second component; The positive pole of described body diode is connected with described S end, and its negative pole is connected with described D end; The D end of described second component is connected with the negative pole of described partial pressure unit, and the G end of described first component and second component is all connected with described drive part, and described drive part is connected with described controller by described communication component.
Preferred in above technical scheme, described communication component is optical fiber.
Preferred in above technical scheme, described controller is single-chip microcomputer.
Preferred in above technical scheme, described output block is plug.
The utlity model has following beneficial effect:
(1) novel voltage divider of the present utility model comprises dividing potential drop assembly, sampling resistor, controller, communication component and output block, and one-piece construction is simplified; Described dividing potential drop assembly comprises N partial pressure unit of series connection successively, described partial pressure unit comprises divider resistance and switch block, described switch block is in parallel with described divider resistance, and be connected with described controller by described communication component, connection by control assembly gauge tap parts and disconnect the series connection of the partial pressure unit that realizes varying number, thereby the size of controlling the all-in resistance of divider resistance in dividing potential drop assembly, its intrinsic standoff ratio can automatically adjust according to tested voltage, practical.
(2) in the utility model, switch block comprises insulated gate bipolar transistor or metal-oxide layer semiconductcor field effect transistor, can carry out the bypass of pinpoint accuracy short circuit to the divider resistance in parallel with it, the size of accurately controlling divider resistance set in dividing potential drop assembly, degree of accuracy is high.
(3) combination of switch block employing first component, second component and driver part in the utility model, structure is simplified, and accuracy is high.
(4) in the utility model, communication component adopts optical fiber, and communication performance is high, and has solved the problem of strong and weak electricity isolation, can improve the security to high voltage control.
(5) the utility model middle controller adopts single-chip microcomputer, and output block adopts plug, and parts easily obtain, easy to operate.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is existing resistance divider;
Fig. 2 is existing condenser divider;
Fig. 3 is the one-piece construction schematic diagram of the novel voltage divider of the utility model preferred embodiment 1;
Fig. 4 is the structural representation of partial pressure unit in Fig. 3;
1-dividing potential drop assembly, 11-partial pressure unit, 111-divider resistance, 112-switch block, 01-first component, 02-second component, 03-driver part, 2-sampling resistor, 3-controller, 4-communication component, 5-output block.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can limit and cover according to claim is implemented.
Embodiment 1:
A kind of novel voltage divider, refers to Fig. 3, comprises dividing potential drop assembly 1, sampling resistor 2, controller 3, communication component 4 and output block 5, and one-piece construction is simplified.
Described controller 3 adopts single-chip microcomputer, also can adopt other control assemblies to control; Described communication component 4 adopts optical fiber, or other communication modes replacements, can ensure high communication performance, and has solved the problem of strong and weak electricity isolation, can improve the security to high voltage control.
Described dividing potential drop assembly 1 comprises 3 partial pressure unit 11 of series connection successively, and the number of partial pressure unit 11 can in the light of actual conditions be selected within the scope of 2-100, meets real demand, practical.
The negative pole of previous described partial pressure unit 11 is connected with the positive pole of a rear described partial pressure unit 11, described in first, the positive pole of partial pressure unit 11 is connected with extraneous high input voltage line, described in last, the negative pole of partial pressure unit 11 connects one end of described sampling resistor 2, the other end ground connection of described sampling resistor 2.
Described partial pressure unit 11 comprises divider resistance 111 and switch block 112, refer to Fig. 4, described switch block 112 is in parallel with described divider resistance 111, described switch block 112 comprises metal-oxide layer semiconductcor field effect transistor, specifically comprises first component 01, second component 02 and driver part 03; Described first component 01 is identical with the structure of described second component 02, and includes body diode, D end, S end and G end, and the D end of described first component 01 is connected with the positive pole of described partial pressure unit 11, and its S end is connected with the S end of described second component 02; The positive pole of described body diode is connected with described S end, and its negative pole is connected with described D end; The D end of described second component 02 is connected with the negative pole of described partial pressure unit 11, and the G end of described first component 01 and second component 02 is all connected with described drive part 03, and described drive part 03 is connected with described controller 3 by described communication component 4.The divider resistance in parallel with it carried out the bypass of pinpoint accuracy short circuit by driver part control first component 01 and second component 02, accurately controls the size of the all-in resistance of divider resistance in dividing potential drop assembly, and degree of accuracy is high; Single-chip microcomputer is that optical fiber by being connected with each partial pressure unit is realized to the control of partial pressure unit.
Described switch block 112 can also adopt and comprise insulated gate bipolar transistor or other transistorized modes, and principle is the same.
The two ends of described sampling resistor 2 are all connected with described controller 3 and described output block 5, the voltage at sampling resistor 2 two ends is exactly the later detection voltage of dividing potential drop, can export by plug, the sampling input end that the voltage at while sampling resistor 2 two ends is sent into single-chip microcomputer carries out analog to digital conversion, and single-chip microcomputer is controlled the action of each partial pressure unit according to sampling size that input end is inputted.
Described output block 5 adopts plug, and parts easily obtain, easy to operate.
Wherein the size of sampling resistor 2 and divider resistance 111 can be selected according to actual conditions, practical.
Use novel voltage divider of the present utility model, concrete control principle is as follows:
In the time that single-chip microcomputer is sent conducting order by optical fiber, the effective conducting first component 01 of driver part 03 and second component 02, because resistance after first component 01 and second component 02 conducting is very low, divider resistance 111 is similar to by short circuit, and it is straight-through that this partial pressure unit 11 is equivalent to a wire; In the time that single-chip microcomputer is sent shutoff order by optical fiber, driver part 03 effectively turn-offs first component 01 and second component 02, due to first component 01 and second component 02, to close the resistance of having no progeny very high, the resistance of divider resistance 111 is substantially unaffected, and these partial pressure unit 11 resistances equal the resistance of divider resistance 111.
When measurement, single-chip microcomputer determines that according to the size of the voltage at sampling resistor 2 two ends that detect first component 01 in each partial pressure unit 11 and the conducting of second component 02 still turn-off; In the time that tested voltage reaches or approaches maximal value, the first component 01 of all partial pressure unit 11 and second component 02 all turn-off, intrinsic standoff ratio maximum; When tested voltage drop is to a certain extent time, the first component 01 of a partial pressure unit 11 of conducting and second component 02, intrinsic standoff ratio reduces; In the time that tested voltage further declines, then the first component 01 of a partial pressure unit 11 of conducting and second component 02, intrinsic standoff ratio further reduces; When so proceeding to tested voltage and reaching or approach minimum value, the first component 01 of all partial pressure unit 11 and the whole conductings of second component 02, it is minimum that intrinsic standoff ratio reduces to, and tested voltage is not decayed and is directly exported through plug 5.Novel voltage divider of the present utility model, by conducting or the shutoff of the partial pressure unit 11 of controller control any amount, maintains the value of a suitable size thereby guarantee dividing potential drop detects voltage, thereby improves measuring accuracy, practical.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. a novel voltage divider, is characterized in that: comprise dividing potential drop assembly (1), sampling resistor (2), controller (3), communication component (4) and output block (5);
Described dividing potential drop assembly (1) comprises N the partial pressure unit (11) of series connection successively, and N is 2-100; The negative pole of previous described partial pressure unit (11) is connected with the positive pole of a rear described partial pressure unit (11), the positive pole of partial pressure unit described in first (11) is connected with extraneous high input voltage line, the negative pole of partial pressure unit described in last (11) connects one end of described sampling resistor (2), the other end ground connection of described sampling resistor (2);
Described partial pressure unit (11) comprises divider resistance (111) and switch block (112), described switch block (112) is in parallel with described divider resistance (111), and is connected with described controller (3) by described communication component (4);
The two ends of described sampling resistor (2) are all connected with described controller (3) and described output block (5).
2. novel voltage divider according to claim 1, is characterized in that: described switch block (112) comprises insulated gate bipolar transistor or metal-oxide layer semiconductcor field effect transistor.
3. novel voltage divider according to claim 2, is characterized in that: described switch block (112) comprises first component (01), second component (02) and driver part (03); Described first component (01) is identical with the structure of described second component (02), and include body diode, D end, S end and G end, the D end of described first component (01) is connected with the positive pole of described partial pressure unit (11), and its S end is connected with the S end of described second component (02); The positive pole of described body diode is connected with described S end, and its negative pole is connected with described D end; The D end of described second component (02) is connected with the negative pole of described partial pressure unit (11), the G end of described first component (01) and second component (02) is all connected with described drive part (03), and described drive part (03) is connected with described controller (3) by described communication component (4).
4. novel voltage divider according to claim 1, is characterized in that: described communication component (4) is optical fiber.
5. novel voltage divider according to claim 1, is characterized in that: described controller (3) is single-chip microcomputer.
6. according to the novel voltage divider described in claim 1-5 any one, it is characterized in that: described output block (5) is plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208125.9U CN203798884U (en) | 2014-04-25 | 2014-04-25 | Novel voltage divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208125.9U CN203798884U (en) | 2014-04-25 | 2014-04-25 | Novel voltage divider |
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| Publication Number | Publication Date |
|---|---|
| CN203798884U true CN203798884U (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420208125.9U Expired - Fee Related CN203798884U (en) | 2014-04-25 | 2014-04-25 | Novel voltage divider |
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| CN (1) | CN203798884U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926441A (en) * | 2014-04-25 | 2014-07-16 | 湖南银河电气有限公司 | Novel voltage divider |
| CN106292827A (en) * | 2016-08-18 | 2017-01-04 | 华为技术有限公司 | A kind of device for generating voltage and semiconductor chip |
-
2014
- 2014-04-25 CN CN201420208125.9U patent/CN203798884U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926441A (en) * | 2014-04-25 | 2014-07-16 | 湖南银河电气有限公司 | Novel voltage divider |
| CN106292827A (en) * | 2016-08-18 | 2017-01-04 | 华为技术有限公司 | A kind of device for generating voltage and semiconductor chip |
| CN109032233A (en) * | 2016-08-18 | 2018-12-18 | 华为技术有限公司 | A kind of device for generating voltage and semiconductor chip |
| US10345835B2 (en) | 2016-08-18 | 2019-07-09 | Huawei Technologies Co., Ltd. | Voltage generation apparatus and semiconductor chip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140827 Termination date: 20200425 |