CN201429449Y

CN201429449Y - Intelligent high precision liquid level gauge

Info

Publication number: CN201429449Y
Application number: CN2009201637562U
Authority: CN
Inventors: 翟荣全
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-13
Filing date: 2009-07-13
Publication date: 2010-03-24
Anticipated expiration: 2019-07-13

Abstract

An intelligent high precision liquid level gauge belongs to the field of liquid level gauges, wherein magnetic floats are connected on an outer sleeve and guiding bar, a plurality of resistances are connected in series to form a resistance loop and are fixedly connected on circuit boards in the outer sleeve and guiding bar, guiding wires which are connected with a computer are fixedly arranged onthe circuit boards in turn, tongue tubes are densely arranged in the magnetic field sensing range of the magnetic floats according the order from top to bottom, one ends are fixedly connected with thecorresponding guiding wires, the other ends are connected with corresponding resistance loops, when simultaneous closing of a plurality of tongue tubes can be guaranteed, the circuit parameters of each checking loop can not be affected, the arrangement of the tongue tubes is not affected by the magnetic field intensity range, and the tongue tubes can be arbitrarily added to twice or N times according to precision demands. Data are analyzed through a computer, and the precision of checking the data is high.

Description

Intelligence high-precision liquid level meter

Technical field

The utility model relates to a kind of liquid level gauge, specifically a kind of intelligent high-precision liquid level meter.

Background technology

Traditional tongue tube liquid level gauge adopts single testing circuit structure, when liquid level is in a height, connects a tongue tube by the induction control of float magnetic, is attached thereto circuit and connects.When level change reaches next height, a tongue tube and circuit are closed in the pass, connect the tongue tube and the circuit of current location, produce different output intensities when the simulating signal of input end input is through different adjustment loop like this, thereby make the processing instrument determine current liquid level position.Cause circuit parameter uncertain for fear of a plurality of tongue tubes while closures, the back level is handled caused difficulty, the arrangement pitch of tongue tube is usually greater than 15mm on the liquid level gauge, and just the precision of conventional dry reed pipe liquid level gauge is at 20mm, and measuring accuracy is lower.

The utility model content

The technical problems to be solved in the utility model is to cause circuit parameter uncertain at closure of a plurality of treatment loops while of prior art, the back level is handled the deficiency that causes difficulty, a kind of densely covered dry reed-pipe structure is provided, form a plurality of detections loop, detecting the loop is connected with computing machine respectively, use the Computer Analysis data, the intelligent high-precision liquid level meter that measuring accuracy is high.

Solve the problems of the technologies described above by the following technical solutions: a kind of intelligent high-precision liquid level meter, comprise computing machine, the overcoat guide pole of holding concurrently, tongue tube, wiring board and resistance, described overcoat is held concurrently and is connected with magnetic float on the guide pole, described resistance is set to a plurality of, it is in the circuit board affixed that a plurality of resistance series connection connect to form resistance loop, described wiring board is positioned at the overcoat guide pole of holding concurrently, on this wiring board according to the order of sequence stationary arrangement the lead that is connected with computing machine is arranged, described tongue tube is arranged according to basipetal order is densely covered in the magnetic field induction scope of magnetic float, one end is connected with the lead fixed corresponding with it respectively, the other end is connected with the resistance loop corresponding with it respectively, and the measurement loop that is connected with tongue tube is connected with computing machine respectively.

Adopted technique scheme, compared with prior art, the utility model is formed the detection loop by a plurality of tongue tubes, resistance, wiring board.Guarantee that when a plurality of tongue tubes are closed simultaneously each detects, and the circuit parameter in loop is unaffected, the layout of tongue tube is not subjected to the influence of magnetic field intensity scope, thereby can be according to accuracy requirement, increases tongue tube and circuit arbitrarily and satisfies requirement to measuring accuracy.And the tongue tube that whenever doubles just can improve an accuracy class.The float of the utility model employing carrying magnetic body and non-magnetic wiring board, the double float mobile guide bar of doing of overcoat, not only simple to operate, accurate, and the utility model Computer Analysis data.Owing to increase as liquid level benchmark tongue tube density, though the sensed connection of a plurality of tongue tube and circuit, as long as liquid level produces the displacement that the tongue tube break-make is changed, computing machine just can accurately be discerned.And compare with conventional dry reed pipe liquid level gauge, tongue tube arranges that density looks the needs of accuracy class, what can be directly proportional is increased to 2 times or N arbitrarily doubly, makes liquid level gauge detect the corresponding raising of data accuracy.

Description of drawings

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

Fig. 2 is a schematic diagram of the present utility model.

Among the figure, computing machine 1, tongue tube 2～11, the overcoat guide pole 12 of holding concurrently, the float 13 of carrying magnetic body, magnetic field induction scope 14,

lead

15,16,17.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

Referring to accompanying drawing 1, present embodiment is a kind of intelligent high-precision liquid level meter, and specifically accuracy class is increased to 3 times liquid level gauge.Form by hold concurrently guide pole 12, tongue tube and resistance etc. of computing machine 1, overcoat.Overcoat is held concurrently and is fixedly connected with magnetic float 13 on the guide pole 12, and overcoat is held concurrently and wiring board is housed in the guide pole 12.Order arrangement according to left, center, right on the wiring board is welded with 15,16,17., three leads 15,16 of three leads that are connected with computer chip, and 17 are parallel to each other.Tongue tube as the magnetosensitive switch is arranged according to the order of upper, middle and lower is densely covered in the magnetic field induction scope 14 of magnetic float, the tongue tube that every lead connected is one group, one end is welded on respectively on the lead corresponding with it, the other end respectively with the resistance loop corresponding welding with it, wherein

tongue tube

2,5,8,11 are welded on the lead 15,

tongue tube

3,6,9 are welded on the lead 16

tongue tube

4,7,10 are welded on the lead 17, and three leads are connected with computing machine 1 respectively, organize tongue tube formation measurement loop more and are connected with computing machine 1 respectively.

The arranging density of tongue tube 2～11 is directly proportional with the liquid level gauge accuracy class is corresponding, looks the needs of liquid level gauge accuracy class, can be increased to 2 times or N times arbitrarily.

See Fig. 2, what present embodiment provided is the schematic diagram of multiloop tongue tube, and resistance is set to a plurality of, and a plurality of resistance are connected in series, and wherein connects tongue tube between the two adjacent resistance respectively and constitutes a tongue tube closed-loop path, and multiple conducting wires is formed a plurality of measurements loop.Article three,

lead

15,16, and 17 are welded in parallel on the wiring board, and a plurality of resistance R 1～R13 end that is in series is connected with power supply, and other end ground connection is formed resistance loop, resistance loop and

lead

15,16, and 17 are welded in parallel on the wiring board.Tongue tube claims the magnetosensitive switch again, in order to be convenient to show that the tongue tube among Fig. 2 is represented with magnetosensitive switch S 1～S12 with the resistance difference.Wherein magnetosensitive switch S 3, S6, S9, S12 one end are welded on article one lead, and the other end and resistance loop are welded to form first group and measure the loop.Magnetosensitive switch S 2, S5, S8, S11 one end are welded on the second lead, and the other end and resistance loop are welded to form second group and measure the loop.Magnetosensitive switch S 1, S4, S7, S10 one end are welded on the 3rd lead, and the other end and resistance loop are welded to form the 3rd group and measure the loop.Article first, second, third, lead joins with 16,17,18 pin of computing machine 1 chip successively.The input end of computing machine 1 is connected with power supply.

Principle of work of the present utility model

The utility model utilizes interior magnetic of outside float and the tongue tube on the measuring circuit to respond to, and carries out the switching of treatment loop again by the break-make of tongue tube, thereby makes the height of output signal reflection liquid level.Between first group of tongue tube, insert second, third group tongue tube according to this principle the utility model, and same group had only a sensed connection of tongue tube at an arbitrary position.Just three treatment loops are arranged in three independent detection loops, and each detection loop still has only a treatment loop like this, and the circuit parameter in each detection loop is unaffected.The computer unit of level screens, analyzes after then the result in a plurality of detections loop being delivered to, thereby determines the output result of the current liquid level of accurate reflection.This result can do the output of any form according to the requirement of back level instrument.

As Fig. 1, not

tongue tube

6,7, the 8 sensed connections simultaneously on the same group in the magnetic field range shown in the magnetic float 13 14, computing machine 1 by analyze select one the tunnel as the liquid level benchmark (such as: highest point one tunnel 6 in the loop that all inductions are connected).When magnetic float 13 rose to

tongue tube

5,6,7 scopes, tongue tube 8 disconnected, and the highest one tunnel tongue tube of connecting 5 is chosen as the liquid level benchmark by computing machine.Like this, the tongue tube that whenever doubles, measuring accuracy can improve a grade.The result in a plurality of detections loop delivers to computer unit screening, the analysis of back level respectively, has greatly improved accuracy of detection.

Circuit theory can also be designed to other form.Main points of the present utility model are whenever to double tongue tube, just the accuracy class that can double.The tongue tube that increases is responded to connection simultaneously by magnetic float.But computing machine can screen and be defined as the liquid level benchmark accurately.

Claims

1, a kind of intelligent high-precision liquid level meter, comprise computing machine, the overcoat guide pole of holding concurrently, tongue tube, wiring board and resistance, described overcoat is held concurrently and is connected with magnetic float on the guide pole, described resistance is set to a plurality of, it is in the circuit board affixed that a plurality of resistance series connection connect to form resistance loop, described wiring board is positioned at the overcoat guide pole of holding concurrently, it is characterized in that, on this wiring board according to the order of sequence stationary arrangement the lead that is connected with computing machine is arranged, described tongue tube is arranged according to basipetal order is densely covered in the magnetic field induction scope of magnetic float, one end is connected with the lead fixed corresponding with it respectively, the other end is connected with the resistance loop corresponding with it respectively, and the measurement loop that is connected with tongue tube is connected with computing machine respectively.

2, intelligent high-precision liquid level meter according to claim 1, it is characterized in that: the arranging density of described tongue tube is directly proportional with the liquid level gauge accuracy class is corresponding.