CN2781325Y

CN2781325Y - Electric measuring thickness instrument for thin-layer concrete

Info

Publication number: CN2781325Y
Application number: CN 200520008993
Authority: CN
Inventors: 钟世航
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-25
Filing date: 2005-03-25
Publication date: 2006-05-17
Anticipated expiration: 2015-03-25

Abstract

The utility model discloses an electrical measuring thickness instrument for thin layers of concrete, which relates to a device electrically measuring the thickness of concrete layers without damage and is particularly suitable for the rapid measurement of the thickness of the thin layers of concrete. The utility model comprises a transmitter, a receiver, a printer and a fixing electrode system of flexible electrodes, wherein a relay or an electronic switch which can be controlled to be respectively switched on is arranged on the transmitter, the relay or the electronic switch respectively corresponds to and is communicated with each counter electrode of the fixing electrode system to carry out rho s measurement. Simultaneously, the numerical value of electrode spacing is automatically input to the receiver. A low-pass filter is arranged in the receiver of which the passband is the same as the frequency band of the foot changing current offered by the transmitter. The receiver has a function which can mark the thickness position of the concrete on the rho s curve of the display screen, and the thickness value is marked through a keyboard. Measuring points, measuring results and rho s curves are printed by the printer. The fixing electrode system of flexible electrodes can adopt a symmetrical four-pole or three-pole device or a differential electric measuring device according to requirements.

Description

A kind of electrical measurement thin-lift concrete thickness gauge

Technical field

The utility model relates to a kind of device of harmless electrical measurement coagulate layer thickness, is specially adapted to the quick measurement of thin-lift concrete thickness.

Background technology

Now the invention disclosed patented technology " can't harm the method and apparatus of electrical measurement coagulate layer thickness " (CN85100680B) and the patented technology of utility model patent " a kind of resistivity instrument ", though can detect thin-lift concrete thickness, can not fast detecting to satisfy the requirement of in-site measurement.

Summary of the invention

The purpose of this utility model is, a kind of device of quick measurement thin-lift concrete thickness is provided, and satisfies the needs of in-site measurement.

The technical solution of the utility model is to realize like this, a kind of electrical measurement thin-lift concrete thickness gauge, comprise that transmitter, receiver, printer and retractable electrode fixed electorde are 4 parts, its special character is: establish relay or electronic switch that may command is connected respectively on transmitter, or the employing hand switch, each of correspondence and connection fixed electorde system made ρ to electrode respectively _sMeasure, in machine, be carved in the built-in miniature computing machine and respectively organize AB (AO) and MN value in the device, and the while is to the automatic input electrode distance of receiver; Establishing narrow bandpass filter in receiver makes the frequency band of the exchange current that its frequency band and transmitter confess identical; Establish a manual cursor and a software program on the receiver, in order to the ρ that on display screen, shows _sMark concrete thickness position on the curve, and by keyboard mark one-tenth-value thickness 1/10.Display and printer join, measuring period, result and ρ _sCurve is got by printer.

The utility model compared with prior art can fast detecting go out thin-lift concrete thickness, and measuring period, result and ρ _sCurve is up to by printer, satisfies on-the-spot needs.

Description of drawings

Fig. 1 is a kind of electrical measurement thin-lift concrete thickness gauge structured flowchart

Fig. 2 is 1 a part-structure enlarged drawing among Fig. 1

Fig. 3 is 3 a part-structure enlarged drawing among Fig. 1

Among the figure:

1 transmitter, 2 non-electric isolation transmitter 3 receivers

4 device selections, 5 straight-friendship inverters are to the transmission part and the power supply supervision of AB electric current

6 batteries 7 select conventional electric sounding 8 to select the differential electric sounding

9 branch means 9a relay 9b separated time parts

10 multi-line sockets, 11 conventional electric sounding fixed electrode distance electrode systems

12 differential electric sounding fixed electrode distance electrode systems, 13 polycore cables

20A/D converter 21 microcomputers 22 keyboards

23 display screens 24 connect receiving unit and the narrow bandpass filter of MN

25 stake resistance R _MNMeasure and compensated part 26 printers

Embodiment

Now 1,2,3 describe the utility model most preferred embodiment in detail in conjunction with the accompanying drawings:

(1) on transmitter 1, establishes branch means (9) control and connect wherein relay or electronic switch (9a) respectively, or the employing hand switch, corresponding respectively and connect fixed electorde be 11 (four extremely symmetry or three-pole device) or 12 (differential electric sounding apparatus) each electrode is made ρ _sMeasure, and simultaneously to receiver 3 automatic input electrodes apart from numerical value,

(2) on receiver 3, establish a manual cursor and a software program, the ρ that can on display screen 23, show _sMark concrete thickness position on the curve, and by keyboard mark one-tenth-value thickness 1/10: it is identical to establish the exchange current frequency band that narrow bandpass filter confesses its frequency acceptance band and transmitter in the receiver.

(3) measure period, result and ρ _sCurve is got by printer 26.

(4) establish device in the transmitter 1 and select 4 and separated time part 9, sets the fixedly mode of MN electrode (as four extremely symmetry or three-pole devices) of two kinds of basic mode: a., separated time part 7 and 9 controls A, the B electrodes of powering of organizing more; B. the fixing mode of A, B electrode (as the differential electric sounding), M, the N electrodes of separated time part 8 and the many group power supplies of 9 controls.

(5) to fixed electrode distance electrode system (seeing the CN85100680B patent of invention), to a mode, polycore cable connects and respectively organizes A, B multi-line socket 10 by the polycore cable connection, and a pair of M, N connect receiver; To the b mode, polycore cable connects respectively organizes the multi-core socket 10 that M, N receive receiver, and a pair of A, B connect from transmitter.

(6) instrument and the retractable electrode fixed electorde of four utmost points or three-pole device be 11 or the retractable electrode fixed electorde of differential electric sounding apparatus be 12 to be connected, carry out concrete thickness and measure.

Claims

1, a kind of electrical measurement thin-lift concrete thickness gauge, comprise that transmitter, receiver, printer and retractable electrode fixed electorde are 4 parts, it is characterized in that: on transmitter, establish relay or electronic switch that may command is connected respectively, or the employing hand switch, each of correspondence and connection fixed electorde system made ρ to electrode respectively _sMeasure, and simultaneously to the automatic input electrode of receiver apart from numerical value; Establish a narrow bandpass filter in the receiver, its frequency band is identical with the frequency of the exchange current that transmitter is confessed; Establish a manual cursor and a software program on the receiver, at the ρ of display screen _sMark concrete thickness position on the curve, and by keyboard mark one-tenth-value thickness 1/10; Display and printer join, and measure period, result and ρ _sCurve is got by printer.