Novel voltage divider

A voltage divider, a new technology, applied in the direction of the voltage divider, can solve the problems such as the voltage division ratio cannot be too large, the measurement accuracy is reduced, and the detection accuracy is reduced, so as to solve the problem of strong and weak current isolation, high communication performance, and overall structure streamlined effect

Active Publication Date: 2014-07-16
HUNAN YINHE ATITAN TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The existing voltage divider generally selects the appropriate voltage division ratio according to the maximum value of the measured voltage, and the voltage division ratio cannot be too small, otherwise the detection voltage obtained by the voltage division may be too high and exceed the range of the detection instrument; The voltage ratio should not be too large, otherwise

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Examples

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Example Embodiment

[0030] Example 1:

[0031] A new type of voltage divider, see image 3 , Including voltage divider component 1, sampling resistor 2, controller 3, communication component 4 and output component 5, the overall structure is simplified.

[0032] The controller 3 adopts a single-chip microcomputer or other control components for control; the communication component 4 adopts optical fiber or other communication methods instead, which can ensure high communication performance, solve the problem of strong and weak electrical isolation, and improve the The safety of higher voltage control.

[0033] The voltage divider assembly 1 includes three voltage divider units 11 serially connected in sequence. The number of the voltage divider units 11 can be selected in the range of 2-100 according to actual conditions, which meets actual needs and has strong practicability.

[0034] The negative electrode of the former voltage dividing unit 11 is connected to the positive electrode of the latter volta...

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Abstract

The invention provides a novel voltage divider. The novel voltage divider comprises a voltage dividing assembly, a sampling resistor, a controller, a communication part and an output part. The voltage dividing assembly comprises N voltage dividing units which are sequentially connected in series, and the N is 2-100. The negative electrode of the previous voltage dividing unit is connected with the positive electrode of the next voltage dividing unit, the positive electrode of the first voltage dividing unit is connected with an outside high voltage input line, the negative electrode of the last voltage dividing unit is connected with one end of the sampling resistor, and the other end of the sampling resistor is connected to the ground. Each voltage dividing unit comprises a voltage dividing resistor and a switch part, and the switch parts are in parallel connection with the voltage dividing resistors and are connected with the controller through the communication part. The two ends of the sampling resistor are respectively connected with the controller and the output part. The novel voltage divider is concise in overall structure, a control part is used for controlling the switch parts to be connected and disconnected so that different numbers of the voltage dividing units can be connected in series, hence, the size of the total resistance in the voltage dividing assembly can be controlled, the voltage division ratio can be adjusted automatically according to measured voltages, and practicability is high.

Description

technical field [0001] The invention relates to the field of voltage dividers, in particular to a novel voltage divider whose voltage division ratio can be automatically changed according to the measured voltage. Background technique [0002] A voltage divider is a basic measurement device that steps down and samples the measured voltage proportionally, and is widely used in real life. [0003] Existing voltage dividers are divided into two types: resistive and capacitive, respectively as figure 1 as well as figure 2 As shown, the ratio of the high-end impedance to the low-end impedance is the voltage division ratio. When the measured voltage is relatively high, the resistance value of the high-end resistor is large, and the voltage division ratio is also large; when the measured voltage is relatively low, the resistance value of the high-end resistance is small, and the voltage division ratio is also small. [0004] The existing voltage divider generally selects the app...

Claims

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Application Information

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IPC IPC(8): G01R15/04
Inventor 王宁廖仲篪徐伟专
Owner HUNAN YINHE ATITAN TECH CO LTD
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