CN2223840Y - Laser device for measuring level of material - Google Patents
Laser device for measuring level of material Download PDFInfo
- Publication number
- CN2223840Y CN2223840Y CN 94247033 CN94247033U CN2223840Y CN 2223840 Y CN2223840 Y CN 2223840Y CN 94247033 CN94247033 CN 94247033 CN 94247033 U CN94247033 U CN 94247033U CN 2223840 Y CN2223840 Y CN 2223840Y
- Authority
- CN
- China
- Prior art keywords
- laser
- photoelectric commutator
- dust cover
- gating switch
- utility
- 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 - Fee Related
Links
Abstract
The utility model discloses a laser device for measuring level of material, belonging to a sensing type electronic measuring instrument. The utility model is composed of a laser emitter, a laser receiver, a CCD photoelectric converter, a multiway gating switch, a dust cover, etc. which are all assembled on a fixing plate. The utility model is communicated with an industrial personal computer. The utility model depends on emitting and receiving the light wave of laser, and are changed by the CCD apparatus in the photoelectrical mode. After processed by a computer, the utility model displays the level of material which is measured. The utility model has the advantages that the main devices are easy to match and assemble, the cost is lower, the range of application is wide, the stability of measurement is high, the precision is high, etc.
Description
The utility model belongs to sensor-type electronic measuring device, is a kind of laser material position measurement mechanism.
Common solid, liquid level of filler material measurement mechanism adopts supersonic sounding more at present, or modes such as radio frequency, microwave, the measuring apparatus of selecting for use based on electrooptical device is also arranged, but these traditional measurement mechanisms all exist complex structure to some extent, main components and parts cost an arm and a leg not high with measuring accuracy, the narrower deficiency that waits of measurement range.
The purpose of this utility model is to provide a kind of laser material position measurement mechanism, this device is by the generating laser that is assemblied on the fixed head, members such as laser pickoff and CCD photoelectric commutator and multi-channel gating switch, industry control PC dust cover are formed, and this device are installed on the inwall at storage tank top.By transmitting and receiving the laser light wave, carry out opto-electronic conversion and as calculated machine show material level after finishing respective handling.To overcome the existing in prior technology deficiency.
One-piece construction of the present utility model is:
A kind of laser material position measurement mechanism is by fixed head (1) and be assemblied in generating laser (2) on the plate face, laser pickoff (3), photoelectric commutator (4), gating switch device (5) and set up the member assembly and form, it is characterized in that relative laser pickoff of generating laser and photoelectric commutator install onboard, the D that keeps at a certain distance away of axis each other, and crossing certain angle [alpha], laser pickoff and photoelectric commutator attaching are an integral body, between generating laser and laser pick-off and photoelectric commutator, gating switch device and laser instrument are set, the power supply of photoelectric commutator (6), dust cover (7) also is installed on fixed head, (8), two dust cover are coaxial with generating laser and laser pickoff respectively, and the cylindrical void (10) that fastening bolt (9) passes on the laser photoelectricity converter base plate connects with fixed head plate face.
The attaching of each member relation and apolegamy are respectively on the fixed head:
Laser instrument is the tubulose helium-neon laser, tubular dust cover (7) diameter of its front end is 4-8mm, length is 100-250mm, bottom assembling dustproof glass (11) at dust cover is the telescope lens that is made of one group of concave-convex lens with its laser pickoff at a distance of 140-240mm place, has certain focal length, with the photoelectric commutator of its assembling is to be the main CCD converter that constitutes with the charge-coupled image sensor, the dust cover of receiver front end is that length is 100-250mm, diameter is the cylindrical member of 60-120mm, assembling optical filter (12) at the bottom of it, gating switch device be respectively with effective quantity CCD converter and the corresponding joining multi-channel gating switch of industry control PC (13).
The focal length of laser pickoff camera lens is a kind of among 8.5mm, 75mm, the 100mm, the CCD photoelectric commutator can be a kind of among MTV-1501CB, 1802,1881,168,268, circuit is isolated IC chip (14), register IC chip (15), fine motion address selection switch (16) and Sheffer stroke gate IC chip (17), electronic switching device and multiterminal output switching devices (18) order by photoelectricity and is connected formation in the gating switch device that is communicated with it, and the industry control microprocessor that connects with gating switch device (5) can be a kind of among PC286, the 8088LPV.
This device installation site is:
Fixed head and on measuring appliance be installed on the inwall at high upper port position for 15m-60m storage tank.
Accompanying drawing of the present utility model has:
Fig. 1 is that the apparatus for measuring charge level main devices is arranged sketch.
Fig. 2 is circuit theory diagrams in the multi-channel gating switch device.
Accompanying drawing has provided embodiment of the present utility model, further specifies as follows in conjunction with the accompanying drawings:
This laser material position measurement mechanism is mainly used in measures bigger the consolidating of reserves, the material level of liquid storage tank, with diameter is 8 meters, height is that the coal-storage pot of 20 meters (wherein storing partly is 10 meters) is an example, the fixed head of this device is long to be 350mm, wide is 350mm, be installed on the inwall of coal-storage pot upper port, the length of two dust cover is 200mm, diameter is respectively 6mm and 100mm, helium-neon laser is about 250mm, power is 2-5W, to launch the red laser wavelength be 0.6328 μ m, the CCD photoelectric commutator is selected MTV-1501 type for use, its inside is arranged as with the linear array or the formula of telling in person and is mainly constituted by electric charge first device that is coupled, the telescope lens focal length that connects with the CCD photoelectric commutator is 75mm, the visual angle is 9.6 °, and resolution is 400 * 400, and optical filter is provided with for the wiping out background veiling glare disturbs at the bottom of the dust cover tube.MTV-1501 connects the gating switch device by signal wire, this gating switch device can connect 10 CCD converters in the laser material position measurement mechanism, the apolegamy of its circuit component and connecting relation as shown in Figure 2, output terminal triode BG wherein is a 3DK series switch pipe, diode D is for holding the stream diode.It mainly acts on is the umber of pulse that instrumentation computing machine (8 industry control PCs) sends through control line, the address selection switch K of umber of pulse and gating circuit
1Quantity corresponding, when seven Sheffer stroke gates 4668 output high level through amplifying, drive the normal open switch closure of relay, again signal promptly is transformed to corresponding material level signal after data line feeds back out the software processes amplifier of PC through setting, can reflect continuously that material level changes.
When measuring, can be according to measured controlling level turn bolt (9), regulate the relative position of CCD and reception camera lens (comprising its dust cover) and laser instrument (comprising its dust cover) by cylindrical void (10), both rotatable CCD receives, converter changes and laser instrument axis angle (being generally 5 °-15 °), also can change relative distance (D ± 10-20mm) of the two.D is about 150mm when measuring about 80 meters high material level and changing, and cylindrical void is long to be 30mm.Its fundamental purpose is to adjust zero point and range.
The obtained technical progress of the utility model is:
This measurement mechanism select for use with the supporting CCD electrooptical device of generating laser conventional carry out opto-electronic conversion with photoelectric tube, its long service life, components and parts are difficult for aging and highly sensitive, are aided with its measuring error of multi-channel gating switch and Computer Processing more only for ± 2%.Because the relative position of Laser emission and receiver adopts the adjustable mode with two degree of freedom to install, make such device can adapt to the measurement of 0.2-1.8m and 15-60m differing heights material level in addition.Designed gating circuit is only used a signal-transmitting cable, can utilize toggle switch K with reaching 10 sensors and computing machine UNICOM
1Cooperate the multicontact switch relay to change, finish measurement material level in the different feed bins.Therefore the utlity model has main devices and be easy to apolegamy assembling, cost lower (2000-3000 yuan) and scope of application broad, characteristics such as measurement stability is good, precision height.
Claims (4)
1, a kind of laser material position measurement mechanism is by fixed head (1) and be assemblied in generating laser (2) on the plate face, laser pickoff (3), photoelectric commutator (4), gating switch device (5) and set up the member assembly and form, it is characterized in that relative laser pickoff of generating laser and photoelectric commutator install onboard, the D that keeps at a certain distance away of axis each other, and crossing certain angle [alpha], laser pickoff and photoelectric commutator attaching are an integral body, between generating laser and laser pick-off and photoelectric commutator, gating switch device and laser instrument are set, the power supply of photoelectric commutator (6), dust cover (7) also is installed on fixed head, (8), two dust cover are coaxial with generating laser and laser pickoff respectively, and the cylindrical void (10) that fastening bolt (9) passes on the laser photoelectricity converter base plate connects with fixed head plate face.
2, apparatus for measuring charge level according to claim 1, it is characterized in that laser instrument is the tubulose helium-neon laser, tubular dust cover (7) diameter of its front end is 4-8mm, length is 100-250mm, bottom assembling dustproof glass (11) at dust cover is the telescope lens that is made of one group of concave-convex lens with its laser pickoff at a distance of 140-240mm place, has certain focal length, with the photoelectric commutator of its assembling is to be the main CCD converter that constitutes with the charge-coupled image sensor, the dust cover of receiver front end is that length is 100-250mm, diameter is the cylindrical member of 60-120mm, assembling optical filter (12) at the bottom of it, gating switch device be respectively with effective quantity CCD converter and the corresponding joining multi-channel gating switch of industry control PC (13).
3, apparatus for measuring charge level according to claim 1 and 2, the focal length that it is characterized in that the laser pickoff camera lens is 8.5mm, 75mm, a kind of among the 100mm, the CCD photoelectric commutator can be MTV-1501CB, 1802,1881,168, a kind of in 268, circuit is isolated IC chip (14) by photoelectricity in the gating switch device that is communicated with it, register IC chip (15), fine motion address selection switch (16) and Sheffer stroke gate IC chip (17), electronic switching device and multiterminal output switching devices (18) order connect formation, and the industry control microprocessor that connects with gating switch device (5) can be PC286, a kind of among the 8088LPV.
4, apparatus for measuring charge level according to claim 1 and 2, it is characterized in that fixed head and on measuring appliance be installed on the inwall at high upper port position for 15m-60m storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247033 CN2223840Y (en) | 1994-12-17 | 1994-12-17 | Laser device for measuring level of material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247033 CN2223840Y (en) | 1994-12-17 | 1994-12-17 | Laser device for measuring level of material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2223840Y true CN2223840Y (en) | 1996-04-03 |
Family
ID=33852363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94247033 Expired - Fee Related CN2223840Y (en) | 1994-12-17 | 1994-12-17 | Laser device for measuring level of material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2223840Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470018B (en) * | 2007-12-27 | 2011-06-15 | 珠海天威技术开发有限公司 | Container and expendable excess detection method |
| CN102445256A (en) * | 2011-09-22 | 2012-05-09 | 河海大学 | Elevation calibration device and calibration method for level meter |
| CN107907184A (en) * | 2017-12-01 | 2018-04-13 | 浙江中产科技有限公司 | A kind of method using two kinds of wavelength laser conjunction measuring material position distances |
-
1994
- 1994-12-17 CN CN 94247033 patent/CN2223840Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470018B (en) * | 2007-12-27 | 2011-06-15 | 珠海天威技术开发有限公司 | Container and expendable excess detection method |
| CN102445256A (en) * | 2011-09-22 | 2012-05-09 | 河海大学 | Elevation calibration device and calibration method for level meter |
| CN102445256B (en) * | 2011-09-22 | 2013-05-08 | 河海大学 | Elevation calibration device and calibration method for level meter |
| CN107907184A (en) * | 2017-12-01 | 2018-04-13 | 浙江中产科技有限公司 | A kind of method using two kinds of wavelength laser conjunction measuring material position distances |
| CN107907184B (en) * | 2017-12-01 | 2019-08-02 | 浙江中产科技有限公司 | A method of using two kinds of wavelength laser conjunction measuring material position distances |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |