SU1052877A1 - Electrocapacitive level gauge - Google Patents

Abstract

ELECTRIC CAPACITY NEMER, containing a common electrode, measuring and compensating electrodes of capacitive sensors connected via constant resistors to the pulser, the ZI element, the output of which is connected to the input of the first counter in series connected by the second counter and w; : 53--:;:. P1, and a generator of hack pulses, about vl and tea, and with fuels and lubricants, which, for the purpose of simplification; 3N: opto-n circuit enhancement reliable OS; gi, two electronic 1shchuchs and an element 21-f are introduced into it, with this; The inputs of electrical clichés are connected respectively to the oriental cable and KOMne; icaui.oH; oN-rs are capacitive, the control inputs to the outputs of the counter, and the outputs of the electronic keys are connected: and to the aioMOiiTa input 31-1, element 2I is connected in one way to the output of the kmpuls generator and to the input, the remote control unit, and the other, to the output of the electronic cable connected to j oN n ::: caUioin; jv. cMj-.OvTHbiM sensor, n to output; - Hepuor-j g: o1p; : o, the output of element 2 ;: compound Г from the input f of the second counter, prg: -; i ..: rnx-TOBLX IR PULSOV NODTS; I i - 4 i: to IXVj;,; /: LO Meirra ZI, and the output is digital 1 lane prev: l: OK1H l - v input yyy; o a; with -; - ::;: m ™, pulses.

Description

Isobrepepne opusito) and. telnoy gekhni № and yozheg ygggg, xpolyaivlas dg1ya defined zfnn; 7 io / il n squi nh n ;;

A device is known. Sod (;; 1; to the scoi and the computer; the capacitive capacitive sensors through the boom; e peznggery stitched to the generator of impulses, reversible lock and the first 1

The drawbacks of the device are the sunshine, HvisKajj reliability, and also the accuracy of measurements is low, caused by the apog elements and two power sources, the failure of which leads to inaccuracy.

The closest in technical value to the proposed is a device. measuring and comic strip sashyunny capacitive sensors, two measuring caps containing a comparator trigger, element I, C IGTHUK. t; also, correction, includes a memory block. reversible counter. A cc-agglomerator converter and a controlled clock pulse generator, immersion and compensation sensors are connected via a resistor to the output / generator.

Disadvantage: due to the presence of measuring channels, in addition to coexistence, they got “two different dependencies / 1H jcQMnapators”, changing thresholds of which (temporal or temperature instability) leads to a package, and the package will be subject to a pre-appendant requirement. : level, which reduces the accuracy of yc-cj-oftc on.

Purpose of the invention

This goal is achieved by those / v ;. -yy ;; in ale; a capacitive uroeyegler, with a common electrode, measuring to the compensating electrodes of eiviKo-c sensors; connected via constant;,; resisgor to the generator of n.pulses,; lelyunt. the KOTijporo output is connected to the input of the first counting unit, the second counter is connected to the remote control unit {5-generator and the pulse generator. Win; Two keys and an element 2 of the Ari Igozh-.t electronic keys are connected to the measuring and com- partment-; MU capacitive sensors; . i

e hgG {;:.:: by one 3) tof; OM podgit achen to yhi. g ;; by;) chorus and:., shulsov and to the input of the el (l,:; And, dzugugim input to the input of Alec trsi, connected with a lump,;.. 1saiao1; nym capacitance b) M sensor, and to the first counting, the output element 2 -1 1: -o zdn; ShN with the input of the second counter, and the generator of clock ings for pulses; l1Ochen to the input of the element ZI, and the output of the digital-to-analog converter to the CARE of the impulse generator

% 1 shows the block diagram of my device in FIG. 2, rTii is napped at different points, from tcmperet / ry.,. (2a - for example; ai ;; nd applied to the whole scheme,

n; h; orazovati1yar 2v - for example: the 1st exit of the geyeretor, 2d o iia the output of the zyi element of the ZI, the gauge on the opa, the second inputs ems; H ;;.; 31-1 sootvegstele :: strod l. , meter :. Schupp Datte 1:

Tou g 1 ":; 1ULSOV, EVIL; -a; h ;:

and the second resistors 6 swarm el1gk1pon1Pme key} 8

) - I SG; second generator

igchudysov. first and second

 --H h Tsg1froaalogov) h:; o

only -;

id |

8 and L are combined: ow; o; lu element 1-; element moves

The key is co-connected to the i-tor -1 with ViOKsy pulses at the output of the r-encDi input of the tlurator 13 so TCENzTH kmpluchey B and 9 podgu; -3, rjefjbblH input: l; O-; en k; P Versky

the output of the generator h; gg., second

 to inverse

and the counter 12.; the one of the senior discharge of the first counter 1 2 i; the input first; ment ZI 1O,

 c: output of the e чет Ratcher 13 podjutke: the second ii XOA of the second r 2 3 5Л; l: moves account ::. The code of the element: i 3 Gyudkl yucheny: li to sell by digit; alo

Claims (1)

. ELECTRIC CAPACITIES] FIRST LEVEL METER, containing a common electrode, measuring and compensation electrodes of capacitive sensors, connected via constant resistors to a pulse generator, a GI element, an output, a digital-to-analog converter and a clock pulse generator, excluding I mean that, in order to simplify the measuring circuit and increase reliability, two electronic keys and a 2I element are introduced into it, while the electronic key inputs are connected respectively to the measuring and compensating capacitive sensors, packs The corresponding inputs are to the outputs of the first counter, and the outputs of the electronic keys are connected between themselves and with the input of the GI element, element 2 and one input is connected to the output of the pulse generator and to the input of the GI element, the other g-ho, the house is connected to the input of the electronic key connected to Compensating the connection with a capacitive sensor, and to the guy’s exit · with the input, the output of element 2, and with the input of the second counter, letting go of tetet. s-d ready pulses podkuych ' ¹ n to td'gu element ZI, and the output is cpfroatszdt-onst 'o intermittently connected to the input of the first counter, connected in series nye second schetobrazovatolya