CN2646663Y - Electronic level gauge - Google Patents

Electronic level gauge Download PDF

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Publication number
CN2646663Y
CN2646663Y CN 03210013 CN03210013U CN2646663Y CN 2646663 Y CN2646663 Y CN 2646663Y CN 03210013 CN03210013 CN 03210013 CN 03210013 U CN03210013 U CN 03210013U CN 2646663 Y CN2646663 Y CN 2646663Y
Authority
CN
China
Prior art keywords
nand gate
gate circuit
bubble
tube
output terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 03210013
Other languages
Chinese (zh)
Inventor
傅强
吴国栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changcheng Jinggong Industry Co., Ltd., Ningbo
Original Assignee
Ningbo Greatwall & Bunkaseiko Measuring Tape Manufacture Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Greatwall & Bunkaseiko Measuring Tape Manufacture Co ltd filed Critical Ningbo Greatwall & Bunkaseiko Measuring Tape Manufacture Co ltd
Priority to CN 03210013 priority Critical patent/CN2646663Y/en
Application granted granted Critical
Publication of CN2646663Y publication Critical patent/CN2646663Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

An electric level bar comprises a rule body and a bubble. The utility model is characterized in that the two sides of every bubble end is provided with an infrared transmitting tube which is connected with power source and opposite to the power source and an infrared ray receiving tube; the output end of the infrared ray receiving tube is connected with the electric circuit which displays the bubble position and status. The infrared transmitting tube is a photodiode, and the infrared ray receiving tube is a phototride. Due to the above structure, when the bubble moves left or right, the light intensity of the infrared ray receiving tube at the corresponding end will change; thus, the output end of the infrared ray receiving tube will produce low level; the electric circuit then displays the position of the bubble. As the infrared ray receiving tube has certain receiving range for the infrared ray emission and has higher sensibility for light, the utility model has a much higher precision and sensibility; therefore, the utility model can meet the demand of the modern project.

Description

Electronic horizontal ruler
Technical field
The utility model relates to the surveyor's staff that a kind of engineering is used, and especially refers to the electronic horizontal ruler that a kind of engineering is used.
Background technology
Surveyor's staff is the instrument that is used to measure the measured surface depth of parallelism in engineerings such as building, processing, bridge, and the surveyor's staff that uses is generally bubble type, during use, need to judge that with vision bubble is whether in the centre position of glass-tube, because people's eyesight has nothing in common with each other, and adds the alignment error of bubble parts again and the distortion of expanding with heat and contract with cold, therefore, judge easily to produce error, and can't reflect whether level of testee really.For this reason, people design various electronic horizontal rulers, its sensor has solid pendulum sensors such as the potentiometer of employing formula, condenser type or inductance type, liquid pendulum sensors such as electrolyte type, magnetic fluid formula or the conductive liquid formula of employing are arranged, whether placed in the middle by these sensor senses bubbles signal, the mould in respective electronics/number conversion becomes numeral to show again; Also have and adopt as Chinese utility model patent number is " electronic horizontal ruler " of 00225090.X, it does not contact with having of conductive liquid with probe and judges whether level of measured object by its electronic circuit, this has overcome above-mentioned defective to a certain extent, but in measuring process, find still to have the not high defective of accuracy of measurement and sensitivity, and can't satisfy the needs on the modern project.
Summary of the invention
Technical problem to be solved in the utility model is the defective that overcomes prior art, and a kind of accuracy of measurement and highly sensitive electronic horizontal ruler are provided.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this electronic horizontal ruler comprises blade and air level, position, the every end both sides place that it is characterized in that described air level be equipped with respectively with power supply link to each other, the corresponding infrared emission tube in position and infrared receiver tube, the output terminal of described red line receiving tube links to each other with the electronic circuit of demonstration bubble location status again.
Described electronic circuit can by four NAND gate circuit and with the left side of bubble, in, corresponding three light emitting diodes in right position are formed, be connected to after wherein an input end of two input ends of first NAND gate circuit and second NAND gate circuit links to each other on the output terminal of an infrared receiver tube wherein, and another input end of two input ends of the 4th NAND gate circuit and second NAND gate circuit is connected on the output terminal of another infrared receiver tube after linking to each other, the output terminal of second NAND gate circuit links to each other with two output terminals of the 3rd Sheffer stroke gate, and an end of described three light emitting diodes respectively with first NAND gate circuit, the output terminal of the 3rd NAND gate circuit and the 4th NAND gate circuit is in series, and the other end then links to each other with the negative pole of power supply respectively.It is integrated package and three light emitting diodes of 74HC00 that this electronic circuit also can adopt model.
Described infrared emission tube is good with photodiode, and described infrared receiver tube with phototriode for well, the anode of described photodiode all links to each other with the positive pole of power supply with the emitter of phototriode, the negative electrode of described photodiode and the collector of phototriode then respectively with the negative pole that is connected to power supply after corresponding first resistance, second resistance, the 3rd resistance, the 4th resistance are connected.
Compared with prior art, advantage of the present utility model is: after adopting said structure, when bubble is mobile to the left or to the right, the light intensity of the infrared receiver tube of respective end is changed, make its output terminal produce corresponding low level, again through showing the residing position of bubble behind the electronic circuit, because infrared receiver tube has certain range of receiving to infrared and to more high sensitivity that light had, therefore, the utility model uses accuracy and sensitivity is good, can satisfy the request for utilization of modern project.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is the electronic-circuit diagram among the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1 to Figure 3, this electronic horizontal ruler comprises blade 1 and is positioned at the air level 8 of blade, electronic circuit board 2, the centre of carriage 13 in air level 8 is fixed on, and interior carriage is screwed on blade, and on the interior carriage at air level two ends, be equipped with two groups of infrared emission tubes 9 respectively, 12 (is the D1 among Fig. 3, the D2 label) and infrared receiver tube 10,11 (is the D3 among Fig. 3, the D4 label), in the present embodiment, infrared emission tube D1, D2 and infrared receiver tube D3, D4 adopts photodiode and phototriode, and receiving tube D3, D4 all is in power valve D1, within the D2 infrared emission subtended angle coverage, like this, be positioned at the infrared emission tube D1 of air level left end both sides and the infrared receiver tube D3 sending and receiving that partner and penetrate system, the infrared emission tube D2 that is positioned at air level right-hand member both sides has formed another with infrared receiver tube D4 and has docked emission coefficient, and about end infrared emission tube D1, the anode of D2 and about end infrared receiver tube D3, the emitter of D4 all links to each other with the positive pole of power supply, and about end infrared emission tube D1, the negative electrode of D2 and about end infrared receiver tube D3, the collector of D4 then respectively with corresponding first resistance R 1, second resistance R 2, the 3rd resistance R 3, be connected on the negative pole of power supply 14 after the series connection of the 4th resistance R 4 resistance.For conserver power source, also be serially connected with a switch 15 on the line, measure so that open at any time.
A side of carriage 13 in described electronic circuit board 2 is installed in, be equipped with on the electronic circuit board 2 and corresponding three light emitting diodes 3,4,5 in the position, left, center, right of bubble (also being D5, D6, the D7 label among Fig. 3), their color is elected as red, green, red respectively, and be fixed on the external support 7, external support 7 is embedded in blade 1 side, and covered with a translucent cover 6, observe with convenient.The integrated package that one model is 74HC00 also is installed on the electronic circuit board 2, and this integrated package is made up of four Sheffer stroke gates, has 13 pin, wherein (1), (2), (3) pin be respectively the first NAND gate circuit IC 1-1Two input ends and output terminal, (4), (5), (6) pin be respectively the second NAND gate circuit IC 1-2Two input ends and output terminal, (9), (10), (8) are respectively the 3rd NAND gate circuit IC 1-3Two input ends and output terminal, (12), (13), (11) then are respectively the 4th NAND gate circuit IC 1-4Two input ends and output terminal, its (1), (2) be connected on the collector of left end infrared receiver tube D3 after (4) pin links to each other, and (12), (13) pin be connected on the collector of right-hand member infrared receiver tube D4 after (5) pin links to each other, (6) pin and (9), (10) pin link to each other, (3), (8), (11) pin then are in series with the anode of left end light emitting diode D5, middle light emitting diode D6, right-hand member light emitting diode D7 respectively, and the negative electrode of these three light emitting diodes is connected on the negative pole of power supply after then linking to each other.
During use, when bubble is under the horizontality, about be not subjected to the influence of bubble between infrared emission tube D1, the D2 of end and corresponding infrared receiver tube D3, the D4, left end infrared receiver tube D3 all receives the high light signal that is sent by corresponding power valve D1, D2 with right-hand member infrared receiver tube D4, the phototriode conducting, like this, (1) on the 74HC00 integrated package, (2) pin and (12), (13) pin produce high level, pass through its interior first NAND gate circuit IC respectively 1-1With the 4th NAND gate circuit IC 1-4After, the output low level (3), on (11) pin is gone out left end light emitting diode D5 and right-hand member light emitting diode D7; And (4) on the integrated package, (5) pin also produce high level, through its interior two the second NAND gate circuit IC that are in series 1-2With the 3rd NAND gate circuit IC 1-3After, on (8) pin, producing high level, middle light-emitting diodes D6 light sends green glow, illustrate that the bubble of this moment is in the middle position, and the measured object surface is in horizontality.
When the bubble left end is inclined upwardly, then bubble is moved to the left, the light of the infrared emission tube D1 of left end is kept off by bubble at this moment, and influence the light intensity that left end infrared receiver tube D3 is accepted, the infrared receiver tube D3 receiving light power that is left end diminishes, make (1) on the 74HC00 integrated package, (2), (4) pin produce low level, through first NAND gate circuit IC in it 1-1After, on (3) pin, export high level, make left end light emitting diode D5 send ruddiness; And this moment, be not subjected to the influence of bubble between the infrared emission tube D2 of right-hand member and the infrared receiver tube D4, the infrared receiver tube D4 of right-hand member still receives the high light signal, makes and (12) on the integrated package, (13), (5) pin produce high level, through the second NAND gate circuit IC 1-2The 3rd NAND gate circuit IC with series connection with it 1-3After, (8) pin is a low level, middle light emitting diode D6 goes out, and the generation high level of (13) pin, right-hand member light emitting diode D7 still keeps the state that goes out, at this moment, left end light emitting diode D5 glows, and illustrates that bubble is in left end, and the left end on measured object surface is higher than its right-hand member.
When the bubble right-hand member is inclined upwardly, bubble moves right, its principle and bubble are to the left end mobile phase together, here be not repeated, the result is that right-hand member light emitting diode D7 sends ruddiness, and middle light emitting diode D6 and left end light emitting diode D5 are in the state that goes out, and illustrate that the bubble of this moment is in right-hand member, and the right-hand member on measured object surface is higher than its left end.Therefore, adopt the surveyor's staff of said structure, use very convenient.

Claims (3)

1, a kind of electronic horizontal ruler, it comprises blade and air level, position, the every end both sides place that it is characterized in that described air level be equipped with respectively with power supply link to each other, the corresponding infrared emission tube in position and infrared receiver tube, the output terminal of described red line receiving tube links to each other with the electronic circuit of demonstration bubble location status again.
2, electronic horizontal ruler according to claim 1, it is characterized in that described electronic circuit by four NAND gate circuit and with the left side of bubble, in, corresponding three light emitting diodes in right position are formed, be connected to after wherein an input end of two input ends of first NAND gate circuit and second NAND gate circuit links to each other on the output terminal of an infrared receiver tube wherein, and another input end of two input ends of the 4th NAND gate circuit and second NAND gate circuit is connected on the output terminal of another infrared receiver tube after linking to each other, the output terminal of second NAND gate circuit links to each other with two output terminals of the 3rd Sheffer stroke gate, and an end of described three light emitting diodes respectively with first NAND gate circuit, the 3rd NAND gate circuit, the output terminal of the 4th NAND gate circuit is in series, and the other end then links to each other with the negative pole of power supply respectively.
3, electronic horizontal ruler according to claim 1 and 2, it is characterized in that described infrared emission tube is a photodiode, and described infrared receiver tube is a phototriode, the anode of described photodiode all links to each other with the positive pole of power supply with the emitter of phototriode, and the negative electrode of described photodiode and the collector of phototriode then are connected on the negative pole of power supply respectively with after corresponding first resistance, second resistance, the 3rd resistance, the 4th resistance are connected.
CN 03210013 2003-08-22 2003-08-22 Electronic level gauge Expired - Lifetime CN2646663Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03210013 CN2646663Y (en) 2003-08-22 2003-08-22 Electronic level gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03210013 CN2646663Y (en) 2003-08-22 2003-08-22 Electronic level gauge

Publications (1)

Publication Number Publication Date
CN2646663Y true CN2646663Y (en) 2004-10-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03210013 Expired - Lifetime CN2646663Y (en) 2003-08-22 2003-08-22 Electronic level gauge

Country Status (1)

Country Link
CN (1) CN2646663Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278976A (en) * 2011-07-03 2011-12-14 宁波长城精工实业有限公司 Magnetic level bar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278976A (en) * 2011-07-03 2011-12-14 宁波长城精工实业有限公司 Magnetic level bar

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: NINGBO CHANGCHENG PRECISION INDUSTRY CO.,LTD.

Free format text: FORMER NAME OR ADDRESS: NINGBO GRATE WALL PRECISION MEASURING TAPE MANUFACTURING CO., LTD.

CP01 Change in the name or title of a patent holder

Patentee after: Changcheng Jinggong Industry Co., Ltd., Ningbo

Patentee before: Ningbo Great Wall Precision Roll Ruler Manufacturing Co., Ltd.

C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20130822

Granted publication date: 20041006