CN201600401U - Semi-automatic induction voltage divider - Google Patents

Abstract

The utility model relates to a semi-automatic induction voltage divider comprising an induction voltage divider and a voltage-dividing ratio control device, wherein the voltage-dividing ratio control device comprises a dial-up gear switch, at least one data acquisition card and at least one I/O interface card; the dial-up gear switch is connected with the induction voltage divider; and the data acquisition card and the I/O interface card are connected in series on the dial-up gear switch. The semi-automatic induction voltage divider has wide application, realizes a semi-automatic working mode of the induction voltage divider under the condition that the structure and measuring accuracy of the induction voltage divider are not changed, meets the needs of automatic measurement, and greatly improves the measurement speed and the working efficiency.

Description

Semi-automatic inductive voltage divider

Technical field

The utility model relates to millimeter wave attenuation measurement technology, particularly a kind of semi-automatic inductive voltage divider.

Background technology

Inductive voltage divider claims ratio transformer again, and it can be used as the very high standard attenuator of accuracy that works in audio frequency.Eight inductive voltage dividers are the autotransformers that comprise eight accurate taps, adopt the high-quality switch to interconnect, this method of attachment make output voltage to the intrinsic standoff ratio of input voltage by 1 * 10 ^-8The stepping amount change to 1 from 0.The frequency of operation of this inductive voltage divider is 10Hz～1MHz, but can obtain pin-point accuracy about 1kHz.Because the appearance in frequency synthesized signal source adopts inductive voltage divider to obtain widespread use as the decay calibration system and the decay calibrating installation of standard attenuator.The process that this measuring system is measured tested attenuator is: at first according to the requirement of tested attenuator with the frequency configuration of radio frequency and local vibration source to required Frequency point, tested attenuator (being generally variable attenuator) is placed initial decay amount A ₀(zero graduation) position, the inductive voltage divider intrinsic standoff ratio places D ₀The position, the signal level (according to the damping capacity of tested attenuator) of regulating receiver gain and radio frequency source makes the 1kHz receiver obtain balance indication (balanced voltage indication); Then tested attenuator is placed damping capacity A to be measured ₁The position, because the variation of damping capacity, make system's out of trim this moment in cascade system.Regulate the inductive voltage divider intrinsic standoff ratio once more and make system's balance once more, and read intrinsic standoff ratio D this moment ₁The attenuation incrementation A of tested attenuator then _XFor:

$A_x=A_1-A_0=20\lg \frac{D_1}{D_0}\left(\mathrm{dB}\right)$

But this inductive voltage divider is manual control, and reading can't be realized robotization, and measurement result also to run through the number after manually calculate, greatly reduce measuring speed and efficient, also higher to the technical requirement of survey crew.

The utility model content

The purpose of this utility model is to improve the shortcoming of existing product and provides a kind of under the situation that does not change original manual inductive voltage divider accuracy of measurement, can realize the semi-automatic inductive voltage divider of semi-automatic measuring working method.

For achieving the above object, the utility model provides a kind of semi-automatic inductive voltage divider, described semi-automatic inductive voltage divider comprises inductive voltage divider and intrinsic standoff ratio control device, and described intrinsic standoff ratio control device comprises the dial-up driving switch, at least one data collecting card and at least one block I/O interface card; Described dial-up driving switch links to each other with inductive voltage divider, and described data collecting card and I/O interface card are connected in series on the dial-up driving switch successively.

Further, the interpolation type pci bus compatibility of described I/O interface card and computing machine.

Further, the driving switch of described inductive voltage divider is provided with shaft joint, and an end of this shaft joint links to each other with the driving switch of described inductive voltage divider, and the other end links to each other with described dial-up driving switch by data line.

Have 8 groups of driving switch on the described inductive voltage divider, every group of driving switch branch has 11 gears, on 8 groups of driving switch of inductive voltage divider, respectively connect a shaft joint, all be connected with a dial-up driving switch on each shaft joint, also be provided with 11 gears (11 kinds of states show) on each dial-up driving switch, gear on each dial-up driving switch links to each other with data collecting card by data line respectively, this data collecting card links to each other with computing machine by the I/O interface card with computing machine interpolation type pci bus compatibility, data on the computing machine reading of data capture card, determine the state and the position of every group of driving switch on the inductive voltage divider, and the position of 8 groups of dial-up driving switch is synthesized by data processing, by the processing of computing machine, the whole reading of 8 groups every group 11 gears is an intrinsic standoff ratio on the inductive voltage divider thereby draw again.

Advantage of the present utility model is:

1, can obtain the position of each scale of inductive voltage divider in this way, but not change the accuracy of the inner structure and the measured data of coming out of sense voltage divider.

2, by computing machine the data on the data capture card are carried out follow-up data processing, finish the preservation of inductive voltage divider, finished semi-automatic improvement tested damping capacity calculating and data.

3, solved artificial reading and manually calculate the data processing problem of measurement result, significantly improved work efficiency, also reduced excessive demand simultaneously personnel's technology.

4, solved because the deviation of the measurement data that the minor shifts of measurement result is brought in the measuring process joins the subtle change of measurement result in the result of calculation, data have been carried out real-time correction and demonstration in real time.

Description of drawings

Fig. 1 is a structural representation block scheme of the present utility model.

Embodiment

Below in conjunction with description of drawings embodiment of the present utility model.

A kind of as shown in Figure 1 semi-automatic inductive voltage divider, semi-automatic inductive voltage divider comprises inductive voltage divider 1 and intrinsic standoff ratio control device 2, intrinsic standoff ratio control device 2 comprises the I/O interface card 5 of 3, one data capture cards 4 of dial-up driving switch and one and computing machine interpolation type pci bus compatibility; Dial-up driving switch 3 links to each other with inductive voltage divider 1 by data line, and data collecting card 4 and I/O interface card 5 are connected in series on the dial-up driving switch 3 successively by data line; Be respectively equipped with shaft joint 6 on 8 groups of driving switch of inductive voltage divider 1, an end of this shaft joint 6 links to each other with the driving switch of described inductive voltage divider 1, and the other end links to each other with described dial-up driving switch 3 by data line.

Inductive voltage divider 1 is as the standard attenuator in the decay calibrating installation, claims ratio transformer again, and it is the very high step attenuator of accuracy that works in audio frequency.8 inductive voltage dividers 1 are the autotransformers that comprises 8 groups of accurate taps, adopt the high-quality switch to interconnect, this method of attachment make output voltage to the intrinsic standoff ratio of input voltage by 1 * 10 ^-8The stepping amount change to 1 from 0.The semi-automatic inductive voltage divider of the utility model for a change, reading to original inductive voltage divider has adopted automatic data collection, employing connects a shaft joint 6 on 8 groups of driving switch (every group of driving switch has 11 gears) of inductive voltage divider 1, all connect a dial-up driving switch 3 on each shaft joint 6 by data line, each dial-up driving switch 3 is divided into 11 gears (existing 11 kinds of states show) again, 8 groups of driving switch of inductive voltage divider 1 are a corresponding dial-up driving switch 3 respectively, by data line each gear of all dial-up driving switch 3 is connected with data collecting card 4 then, and the position data of 8 groups of driving switch of inductive voltage divider 1 is latched in the data collecting card 4, realization is to the storage of data, this data collecting card 4 is connected with a data I/O interface card 5 with computing machine interpolation type pci bus compatibility, by this I/O interface card 5 information and data in the data collecting card 4 are sent in the terminal computer, realized reading to data, simultaneously the data that read are handled, draw the particular location of inductive voltage divider 1 on different gears, and the reading of gathering calculated, obtain tested damping capacity and on computer screen, show, decay reading on the screen can show the dynamic change of the damping capacity when measuring balance in real time, again can be in measuring process the damping capacity of help desk personnel after to the gear change of inductive voltage divider 1 make judgement fast, make test process more convenient.

In the process that data collecting card stores data the state that reads each dial-up driving switch 3, because each dial-up driving switch 3 has 11 gears, so each dial-up driving switch 3 is divided into 11 kinds of states.By after the reading of data data being encoded, each coding is corresponding to the gear positions on the dial-up driving switch 3, show by a decimal code, code to these 8 groups of dial-up driving switch 3 synthesizes by different intrinsic standoff ratios then, constitute one 9 decimal number, the gear on each dial-up driving switch 3 marches forward one when being positioned at 10 grades.Maximum number is 100000000, and intrinsic standoff ratio is 1; Minimum is 000000000, and intrinsic standoff ratio is-∞.For example: reading is 000010000, and then intrinsic standoff ratio is 10 ^-4, with respect to the maximum number 80dB that decayed.

The computing machine of system support is gathered, is handled the measurement data of inductive voltage divider 1, and utilizes correlation model software that error is revised, and makes systematic survey uncertainty index reach the regulation requirement.

The embodiment of the above is one of case study on implementation of the present utility model; be not to limit practical range of the present utility model with this; so the equivalence that all shapes according to the utility model, structure and principle are done changes, and all should be encompassed in the protection domain of the present utility model.

Claims (3)

1. semi-automatic inductive voltage divider, it is characterized in that: described semi-automatic inductive voltage divider comprises inductive voltage divider and intrinsic standoff ratio control device, described intrinsic standoff ratio control device comprises the dial-up driving switch, at least one data collecting card and at least one block I/O interface card; Described dial-up driving switch links to each other with inductive voltage divider, and described data collecting card and I/O interface card are connected in series on the dial-up driving switch successively.

2. semi-automatic inductive voltage divider according to claim 1 is characterized in that: the interpolation type pci bus compatibility of described I/O interface card and computing machine.

3. semi-automatic inductive voltage divider according to claim 1 and 2, it is characterized in that: the driving switch of described inductive voltage divider is provided with shaft joint, one end of this shaft joint links to each other with the driving switch of described inductive voltage divider, and the other end links to each other with described dial-up driving switch by data line.

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