CN101672645B - Plug-in horizontal state sensor - Google Patents
Plug-in horizontal state sensor Download PDFInfo
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- CN101672645B CN101672645B CN2009101851560A CN200910185156A CN101672645B CN 101672645 B CN101672645 B CN 101672645B CN 2009101851560 A CN2009101851560 A CN 2009101851560A CN 200910185156 A CN200910185156 A CN 200910185156A CN 101672645 B CN101672645 B CN 101672645B
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Abstract
The invention discloses a plug-in horizontal state sensor, comprising a base and a housing, wherein the two ends of the base are fixed with bolt holes; the base is provided with two vertical sensing devices of which the central lines are mutually perpendicular; and each vertical sensing device comprises infrared transceivers arranged at two sides of a modulation pendulum, a receiver and the like. Sensing of horizontal state automatic control for engineering equipment can be realized by directly plugging the sensor in an automatic control circuit board. If the automatic control circuit board is arranged in a right-angle frame of the vertical reference surface of the engineering equipment, sensing of vertical state automatic control for the engineering equipment can be realized. The invention uses two vertical sensing devices of which the central lines are mutually perpendicular as sensing sources, thus having high sensitivity, small volume, light weight, reliable work, high integration degree, good integral circuit performance and digital signal output and the like to satisfy the requirement of automatic control of the engineering equipment.
Description
Technical field
The present invention relates to a kind of sensor of engineering equipment automatic control level state, a kind of specifically plug-in horizontal state sensor.
Technical background
At present, when the engineering equipment horizontality is measured, the level meter of using morely, no signal output function, inconvenience.Therefore, when the engineering equipment horizontality is measured auto-control Design, wish that automatic control device not only has performances such as highly sensitive, reliable operation, life-span length, digital signal output, and have that volume is little, in light weight, circuit good integrity, characteristics such as easy to operate.
Summary of the invention
Needs at the automatic control of engineering equipment, the present invention proposes a kind of plug-in horizontal state sensor, possess 12 electric connection line pins, it directly is inserted on the plug holder of engineering equipment automatic control circuit board, behind the bolt base, can carry out the engineering equipment horizontality sensing of control automatically.If this automatic control circuit board is installed on the right angle frame of the vertical reference field of engineering equipment, can also carry out the engineering equipment vertical state sensing of control automatically.
The concrete technical scheme of the present invention is as follows:
A kind of plug-in horizontal state sensor includes base, case, and there is fixed bolt hole at the base two ends, it is characterized in that: two mutually perpendicular vertical sensing devices of center line are installed on the described base; Described vertical sensing devices structure is: be installed in two frids on the base, the frid upper end is equipped with a bearing pin, be hung with a modulation pendulum on the described bearing pin, the modulation pendulum is lighttight fan-shaped flake, the modulation circular hole that one printing opacity is arranged on the modulation pendulum center of gravity vertical line, described modulation is put an infrared transmitter is installed on the frid of a side, two infrared remote receivers that have herringbone to arrange on the modulation pendulum opposite side frid, light from infrared transmitter sends is received by these two infrared remote receivers after the outgoing simultaneously from modulating in the circular hole; The electric signal wiring of described infrared transmitter, infrared remote receiver is drawn from base; The circuit devcie that cooperates with infrared transmitter, infrared remote receiver also is installed on the described base.
Described plug-in horizontal state sensor is characterized in that: described each infrared transmitter, infrared remote receiver respectively have two electric signal wiring, and each electric signal wiring is connected to respectively is fixed in the base both sides and reaches on the outer connecting line pin of base.
Described plug-in horizontal state sensor is characterized in that: two frid inside surfaces in the described vertical sensing devices are parallel.
Described plug-in horizontal state sensor is characterized in that: there is a semicircle recessed mark in the left end centre of described case end face.
Described plug-in horizontal state sensor is characterized in that: end setting-in one spacing sliding pearl is accommodated in described modulation, and described spacing sliding pearl and two frid inwalls are slidingly matched.
Described plug-in horizontal state sensor, it is characterized in that: the interlude of described bearing pin is triangle blade upwards, end is laid out in described modulation the pendulum hinge circular hole that is enclosed within outside the bearing pin, the location cutting is arranged at the top of pendulum hinge circular hole, and the knife edge part on the described bearing pin is cut in the location cutting at described pendulum hinge circular hole top.
The modulation pendulum can freely swing the light that perpendicular cuts grooved infrared transmitter sends in two frids.An infrared transmitter in each vertical sensing devices, two infrared remote receivers constitute the two interrupters of grooved photoelectricity, its circuit has three build-out resistors, be positioned near its base, and be connected with pin, after sensor inserts the horizontal circuit boards socket by pin, just can work, needn't debug again.
The interlude of bearing pin is the triangle blade that makes progress, and its two ends section is a circular cross section.After this bearing pin location and installation, fixing with the pin shaft hole bonding of glue and grooved photoelectric interrupter frid.
The position of pin of the present invention and size, identical with the plug-in type plastic sheet dual-in-line case integrated circuit of routine.
The form of plastic shell of the present invention and material, identical with the plug-in type plastic sheet dual-in-line case integrated circuit of routine.
The vertical sensing devices of left and right side of the present invention is referred to as vertical sensing devices (I), vertical sensing devices (II) respectively.
The numbering of connecting line pin of the present invention is according to the counterclockwise ordering of the semicircle sign of sensor end face left end.First is No. 1 pin from arranging the left side down, and second in following row left side is No. 2 pin ... first is 24 pin for last row left side.The 23rd, 24 pins of connecting line pin are+5v power supply (V
DD), the 11st, 12 pins are ground connection (V
SS), 1st, 2 pins are the output of the two interrupters of vertical sensing devices (I) grooved photoelectricity left side infrared remote receiver, 6th, 7 pins are the output of the two interrupter right sides of vertical sensing devices (I) grooved photoelectricity infrared remote receiver, 13rd, 14 pins are the output of the two interrupter front sides of vertical sensing devices (II) grooved photoelectricity infrared remote receiver, 18th, 19 pins are the output of the two interrupter rear side infrared remote receivers of vertical sensing devices (II) grooved photoelectricity, and remaining the 3rd, 4,5,8,9,10,15,16,17,20,21,22 pin is empty pin.
Described plug-in horizontal state sensor and automatic control circuit board are used, and during installation, the end face of automatic control circuit board sensor socket, debug parallel with the level reference of engineering equipment.Sensor connecting line pin inserts socket, is connected and fixed with bolt and socket nut bore, allows the sensor bottom surface be close to the socket end face, and sensor can carry out the sensing work of control automatically of engineering equipment horizontality.
Used right angle frame when the present invention is used for the control survey of engineering equipment vertical state is L shaped shape, vertically on the frame face two bolts hole that are fixed in the vertical reference field of engineering equipment is arranged, and four fixedly nut bore of automatic control circuit board are arranged on the level frame face.
Principle of the present invention
According to how much Xue Zhis: " in the plane, all are plumb lines if the normal of two orthogonal lines is arranged, this plane is a surface level ".On the plane bottom plate in the plug-in horizontal state sensor, be provided with orthogonal two vertical sensing devices of center line now, this sensor is inserted on the automatic control circuit board socket parallel with the engineering equipment level reference.When engineering equipment is controlled automatically, export vertical signal simultaneously when two vertical sensing devices, engineering equipment is in the Control work state of level when the time comes.
The vertical sensing devices of plug-in horizontal state sensor is made up of the two interrupters of grooved photoelectricity, modulation pendulum and bearing pin.Width of rebate is b between two frids of the two interrupters of grooved photoelectricity, and notch one side is an infrared transmitter, and opposite side is that herringbone is arranged also two infrared remote receivers of L apart.On the bearing pin on top, hang the fan-shaped modulation pendulum of a light tight metal material between two interrupter two frids of grooved photoelectricity, the b/2 place that is positioned at the notch middle is ajusted in this modulation.The pendulum hinge of modulation pendulum is centered close on the line of symmetry of vertical sensing devices, by modulating the deadweight of putting and putting hinged point, can remain vertical state.The modulation circular hole that a diameter that runs through is arranged at the bottom of modulation center of oscillation line is Φ, when vertical sensing devices was in vertical state, the modulation circular hole was just in time aimed at the infrared transmitter launch window.When the modulation Circularhole diameter Φ of modulation pendulum=L/2, the light that infrared transmitter is launched just in time can be received by two infrared remote receivers side by side simultaneously by the modulation circular hole.But, will allow the infrared remote receiver of corresponding opposite side not receive Infrared as long as modulation is flapped toward a side oscillation.Do not receive the infrared remote receiver phototriode of Infrared, become cut-off state from conducting, i.e. its output becomes electronegative potential " 0 " from noble potential " 1 ".Because of plug-in horizontal state sensor is provided with two perpendicular vertical sensing devices of center line, four infrared remote receivers are arranged in the left, right, front and rear direction.So do not appoint engineering equipment oblique, all can have infrared remote receiver not receive Infrared to which inclination.Like this according to the infrared remote receiver output of representing four different directions,, just can carry out the control that engineering equipment respective direction state is adjusted immediately through processing such as the logic discrimination of control circuit, demonstration, storages.Be specially: if engineering equipment only takes place to tilt to the left, the state of vertical sensing devices (I) modulation pendulum changes.Under the effect of gravity, the modulation of vertical sensing devices (I) pendulum is in order to keep vertical state, around axially left side swing of upper pin.At this moment, the two interrupters of grooved photoelectricity left side infrared remote receiver still can receive light, and its phototriode is in conducting state, is output as noble potential " 1 "; And the right side infrared remote receiver does not receive light, and its phototriode is in cut-off state, is output as electronegative potential " 0 ".And the state of vertical sensing devices (II) modulation pendulum does not change, and the side infrared remote receiver all can receive light before and after the two interrupters of grooved photoelectricity, and its phototriode is in conducting state, still all is output as noble potential " 1 ".If inclination is oblique backward again to the right in the engineering equipment generation, the state of vertical sensing devices (I) and vertical sensing devices (II) modulation pendulum all changes.Under the effect of gravity, the modulation of vertical sensing devices (I) pendulum is in order to keep vertical state, around upper pin axial right side swing.At this moment, the two interrupter right sides of its grooved photoelectricity infrared remote receiver still can receive light, and its phototriode is in conducting state, is output as noble potential " 1 "; And the left side infrared remote receiver does not receive light, and its phototriode is in cut-off state, is output as electronegative potential " 0 ".The modulation of vertical sensing devices (II) pendulum is under the effect of gravity, in order to keep vertical state, around axially back side oscillation of upper pin again.At this moment, the two interrupter rear side infrared remote receivers of its grooved photoelectricity still can receive light, and its phototriode is in conducting state, is output as noble potential " 1 "; And the front side infrared remote receiver does not receive light, and its phototriode is in cut-off state, is output as electronegative potential " 0 ".By parity of reasoning, and which direction engineering equipment does not appoint toward, and plug-in horizontal state sensor all can be exported different signals.Concrete status signal output is as shown in the table:
Sensor pin status signal output table
For sensitivity and the stability that improves plug-in horizontal state sensor: with two infrared remote receivers of the two interrupters of grooved photoelectricity, with pendulum hinge center by the herringbone symmetric arrangement, help modulating the sensitization of circular hole to infrared remote receiver; Bearing pin is made triangle cutting edge shape upwards, and the location cutting is set, help modulating the location of pendulum and reduce contact friction at modulation pendulum pin shaft hole top; Lower end at modulation center of oscillation line is provided with a spacing sliding pearl of doing than heavy material greatly, helps allowing the modulation pendulum be swung in same plane.And when the swing of modulation pendulum, the sensitization illumination that allows grooved photoelectric interrupter infrared remote receiver repeatable position receive is constant.And friction resistance when reducing to modulate the pendulum swing, also increased the weight that the modulation pendulum keeps vertical downward state simultaneously; In automatic control circuit, two infrared remote receivers of the two interrupters of same vertical sensing devices grooved photoelectricity are set, the judging circuit that the output high-potential voltage equates as the foundation of sensor horizontality sensing, improves sensing accuracy greatly.
The present invention be if will carry out the automatic control of engineering equipment vertical state, as long as increase a right angle frame, the vertical frame face of right angle frame is fixed in the vertical reference field of engineering equipment, automatic control circuit board is installed on the level frame face of right angle frame.By such geometric transformation, just can carry out the control of engineering equipment vertical state with horizontal state sensor of the present invention.
Effect of the present invention
The invention discloses a kind of plug-in horizontal state sensor, this sensor directly is inserted on the automatic control circuit board of engineering equipment level reference, can carry out the engineering equipment horizontality sensing of control automatically.If the automatic control circuit board that is inserted with sensor is installed on the right angle frame of the vertical reference field of engineering equipment, can also carry out the engineering equipment vertical state sensing of control automatically.Performances such as that the present invention has is highly sensitive, reliable operation, digital signal output, and volume is little, in light weight, integrated level is high, circuit good integrity, characteristics such as easy to operate, to satisfy the engineering equipment demand of control automatically.
Description of drawings
Fig. 1 plug-in horizontal state sensor of the present invention is faced the inner structure synoptic diagram.
Fig. 2 plug-in horizontal state sensor of the present invention is overlooked the inner structure synoptic diagram.
Fig. 3 plug-in horizontal state sensor side-looking of the present invention inner structure synoptic diagram.
The TV structure synoptic diagram is ajusted in Fig. 4 modulation of the present invention.
Fig. 5 modulation pendulum of the present invention side-looking structural representation.
The two interrupters of Fig. 6 grooved photoelectricity of the present invention are faced structural representation.
The two interrupter side sectional structure synoptic diagram of Fig. 7 grooved photoelectricity of the present invention.
The two interrupter plan structure synoptic diagram of Fig. 8 grooved photoelectricity of the present invention.
The two interrupter backsight structural representations of Fig. 9 grooved photoelectricity of the present invention.
Figure 10 bearing pin of the present invention is faced structural representation.
Figure 11 bearing pin side of the present invention sectional structure synoptic diagram.
Figure 12 bearing pin plan structure of the present invention synoptic diagram.
Embodiment
Referring to Fig. 1～12.
A kind of plug-in horizontal state sensor, include base 1, pin 2, plastic shell 3, pin and number distinguish sign 5, perimeter has fixed bolt hole 4, and two mutually perpendicular vertical sensing devices of center line (I) 6, vertical sensing devices (II) 7 are installed on the base 1; Described vertical sensing devices (I) 6, vertical sensing devices (II) 7 structures are: be installed in two parallel frids 17 on the base 1, there is fixed pin axis hole 18 frid 17 upper ends, bearing pin 40 is installed in the fixed pin axis hole 18, the interlude of bearing pin 40 bearing pins is triangle blade 41 upwards, there is the pendulum hinge circular hole 31 that is enclosed within outside the bearing pin 40 modulation pendulum 30 upper ends, location cutting 32 is arranged at the top of pendulum hinge circular hole 31, in the location cutting 32 at knife edge part incision pendulum hinge circular hole 31 tops of the triangle blade 41 on the bearing pin 40.The front and back ends of frid 17 has baffle plate 19 respectively, and is spacing to the amplitude of fluctuation of modulation pendulum.
The modulation of vertical sensing devices (I) 6 is put on the frid 17 of 30 both sides, is separately installed with: left side infrared remote receiver 11, right side infrared remote receiver 12 that left and right directions infrared transmitter 10 and herringbone are arranged; The modulation of vertical sensing devices (II) 7 is put and is separately installed with front side infrared remote receiver 14, the rear side infrared remote receiver 15 that fore-and-aft direction infrared transmitter 13 and herringbone are arranged on the frid 17 of 30 both sides.Each infrared remote receiver, infrared transmitter are connected with build-out resistor 16 respectively, are installed on the base 1.The electric signal wiring of each infrared transmitter, infrared remote receiver is drawn to be connected to respectively from base and is fixed in the base both sides and reaches on the connecting line pin 2 outside the base;
The left end centre of plastic shell 3 end faces has a semicircle recessed pin number to distinguish sign 5.
Embodiment is: the pin 2 the horizontal situation sensors of plug-in type is inserted on the socket of engineering equipment level reference automatic control circuit board.Penetrate the bolt hole 4 at sensor two ends with bolt, be connected and fixed with the socket nut bore, allow the sensor bottom surface be close to the socket end face, sensor can carry out the sensing work of control automatically of engineering equipment horizontality.If engineering equipment only takes place to tilt to the left, the state of vertical sensing devices (I) 6 modulation pendulum 30 changes.Under the effect of gravity, the modulation of vertical sensing devices (I) 6 pendulum 30 is swung around top bearing pin 40 to the left in order to keep vertical state.At this moment, the two interrupters of grooved photoelectricity left side infrared remote receiver 11 still can receive light, and its phototriode is in conducting state, is output as noble potential " 1 "; And the right side infrared remote receiver receives 12 less than light, and its phototriode is in cut-off state, is output as electronegative potential " 0 ".And the state of vertical sensing devices (II) 7 modulation pendulum 30 does not change, and the output of front side infrared remote receiver 14 and rear side infrared remote receiver 15 is " 1 ".If inclination is oblique backward again to the right in the engineering equipment generation, the state of vertical sensing devices (I) 6 and vertical sensing devices (II) 7 modulation pendulum 30 all changes.Under the effect of gravity, the modulation of vertical sensing devices (I) 6 pendulum 30 is swung around top bearing pin 40 to the right in order to keep vertical state.At this moment, the two interrupter right sides of its grooved photoelectricity infrared remote receiver 12 still can receive light, and its phototriode is in conducting state, is output as noble potential " 1 "; And left side infrared remote receiver 11 does not receive light, and its phototriode is in cut-off state, is output as electronegative potential " 0 ".The modulation of vertical sensing devices (II) 7 pendulum 30 is under action of gravity, in order to keep vertical state, around top bearing pin 40 side oscillation backward again.At this moment, the two interrupter rear side infrared remote receivers 15 of its grooved photoelectricity still can receive light, and its phototriode is in conducting state, is output as noble potential " 1 "; And front side infrared remote receiver 14 does not receive light, and its phototriode is in cut-off state, is output as electronegative potential " 0 ".By parity of reasoning, and which direction engineering equipment does not appoint toward, and plug-in horizontal state sensor all can be exported different signals.According to sensor output unlike signal, automatic control circuit carries out the controls such as transmission that engineering equipment is adjusted state.
The effect of the base 1 of the horizontal situation sensors of plug-in type is fixedly vertical sensing devices (I) 6 and a vertical sensing devices (II) 7 of end face, and each fixes 12 pins 2 both sides, and two ends are each fixed bolt holes 4, and the bottom surface is a level reference.The effect of pin 2 is to allow sensor be connected with the connecting line of automatic control circuit.The effect of plastic shell 3 is fixedly vertical sensing devices (I) 6 and vertical sensing devices (II) 7 of protection.The effect of fixed bolt hole 4 is to allow sensor be firmly fixed on the automatic control circuit board.Pin number distinguishes that the effect of sign 5 is conveniently to recognize the numbering of reading pin 2.The effect of vertical sensing devices (I) 6 is vertical states of sensor/sensor left and right directions.The effect of vertical sensing devices (II) 7 is vertical states of sensor/sensor fore-and-aft direction.The effect of the left and right directions infrared transmitter 10 of the two interrupters of grooved photoelectricity is infrared remote receiver 11 and right side infrared remote receiver 12 emission Infrared to the left.The effect of left side infrared remote receiver 11 is transducing signals of output left direction.The effect of right side infrared remote receiver 12 is transducing signals of output right direction.The effect of fore-and-aft direction infrared transmitter 13 is to front side infrared remote receiver 14 and rear side infrared remote receiver 15 emission Infrared.The effect of front side infrared remote receiver 14 be output the front side to transducing signal.The effect of rear side infrared remote receiver 15 is transducing signals of output rear direction.The effect of build-out resistor 16 is for the two interrupters of grooved photoelectricity provide operating voltage, and the output digital signal.The effect of frid 17 is fixedly infrared transmitter, infrared remote receiver and bearing pin 40.The effect of fixed pin axis hole 18 is fixed pin shafts 40.The effect of baffle plate 19 is amplitudes of restriction medical treatment pendulum 30 swings.The effect of connector pin 20 is that the two interrupter circuit of grooved photoelectricity are connected with the sensor base plate line.The effect of modulation pendulum 30 is the light of the two interrupters of modulation cutting grooved photoelectricity.The effect of pendulum hinge circular hole 31 is to allow modulation pendulum 30 hang on the bearing pin 40.The effect of location cutting 32 is modulation pendulum 30 and bearing pin 40 location, and reduces contact friction.The effect of modulation circular hole 33 is the light that the modulated red external transmitter sends.The effect of spacing sliding pearl 24 is to allow modulation pendulum 30 swing in same plane, increases simultaneously and modulates pendulum 30 weight, helps modulation pendulum 30 and keeps vertical downward.The effect of bearing pin 40 is to allow modulation pendulum 30 around this swing.The effect of triangle blade 41 is the contact frictions that reduce to modulate pendulum 30 and bearing pin 40, improves its sensitivity.
Concrete usable range of the present invention:
1. with the socket surface of engineering equipment automatic control circuit board upper sensor, debug parallel with the engineering equipment level reference.
2. see clearly the sequence number sign of sensor pin, lightly sensor is inserted the plug holder of automatic control circuit board, and use bolt.
3. open the power supply on the circuit board, carry out the sensor trial run.
4. start working, carry out the automatic control of engineering equipment horizontality.
Performance of the present invention:
1. case type: plastics dual-in-line case (the same integrated circuit of form).
2. sensitivity: ± 0.1 °.
3. output: digital signal.
4. working temperature :-10 ℃～60 ℃.
5. power supply :+5v (Switching Power Supply).
6. size: 45 * 16 * 17mm (length * wide * height).
7. weight: about 10 grams.
Claims (5)
1. a plug-in horizontal state sensor includes base, case, and there is fixed bolt hole at the base two ends, it is characterized in that: two mutually perpendicular vertical sensing devices of center line are installed on the described base; Described each vertical sensing devices structure is: be installed in two frids on the base, the frid upper end is equipped with a bearing pin, be hung with a modulation pendulum on the described bearing pin, the modulation pendulum is lighttight fan-shaped flake, the modulation circular hole that one printing opacity is arranged on the modulation pendulum center of gravity vertical line, described modulation is put an infrared transmitter is installed on the frid of a side, two infrared remote receivers that have herringbone to arrange on the modulation pendulum opposite side frid, light from infrared transmitter sends is received by these two infrared remote receivers after the outgoing simultaneously from modulating in the circular hole; The electric signal wiring of described infrared transmitter, infrared remote receiver is drawn from base; The circuit devcie that cooperates with infrared transmitter, infrared remote receiver also is installed on the described base; Described each infrared transmitter, infrared remote receiver respectively have two electric signal wiring, and each electric signal wiring is connected to respectively is fixed in the base both sides and reaches on the outer connecting line pin of base.
2. plug-in horizontal state sensor according to claim 1 is characterized in that: two frid inside surfaces in the described vertical sensing devices are parallel.
3. plug-in horizontal state sensor according to claim 1 is characterized in that: there is a semicircle recessed mark in the left end centre of described case end face.
4. plug-in horizontal state sensor according to claim 1 is characterized in that: end setting-in one spacing sliding pearl is accommodated in described modulation, and described spacing sliding pearl and two frid inwalls are slidingly matched.
5. plug-in horizontal state sensor according to claim 1, it is characterized in that: the interlude of described bearing pin is triangle blade upwards, end is laid out in described modulation the pendulum hinge circular hole that is enclosed within outside the bearing pin, the location cutting is arranged at the top of pendulum hinge circular hole, and the knife edge part on the described bearing pin is cut in the location cutting at described pendulum hinge circular hole top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101851560A CN101672645B (en) | 2009-09-30 | 2009-09-30 | Plug-in horizontal state sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101851560A CN101672645B (en) | 2009-09-30 | 2009-09-30 | Plug-in horizontal state sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101672645A CN101672645A (en) | 2010-03-17 |
| CN101672645B true CN101672645B (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101851560A Expired - Fee Related CN101672645B (en) | 2009-09-30 | 2009-09-30 | Plug-in horizontal state sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102662072B (en) * | 2012-05-11 | 2014-12-10 | 福建农林大学 | Insect flight speed testing device |
| CN103485319B (en) * | 2013-08-27 | 2015-09-02 | 合肥工业大学 | Photo-electric high fill settlement measurement electricity testing device and allocation method thereof |
| CN105823465B (en) * | 2016-05-20 | 2018-12-25 | 吴清荣 | Ground device for monitoring inclination |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161904Y (en) * | 1993-07-19 | 1994-04-13 | 中国建筑科学研究院建筑结构研究所 | Building engineering quality detecting meter |
| CN2413266Y (en) * | 2000-02-17 | 2001-01-03 | 大连方舟科贸有限公司 | Multi-purpose horizontal stable platform |
| CN201072337Y (en) * | 2007-06-22 | 2008-06-11 | 李彬 | Infrared level instrument |
-
2009
- 2009-09-30 CN CN2009101851560A patent/CN101672645B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161904Y (en) * | 1993-07-19 | 1994-04-13 | 中国建筑科学研究院建筑结构研究所 | Building engineering quality detecting meter |
| CN2413266Y (en) * | 2000-02-17 | 2001-01-03 | 大连方舟科贸有限公司 | Multi-purpose horizontal stable platform |
| CN201072337Y (en) * | 2007-06-22 | 2008-06-11 | 李彬 | Infrared level instrument |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-210681A 1997.08.12 |
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| CN101672645A (en) | 2010-03-17 |
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