CN1066974A - Microcomputerized dynamic tester - Google Patents
Microcomputerized dynamic tester Download PDFInfo
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- CN1066974A CN1066974A CN 91103296 CN91103296A CN1066974A CN 1066974 A CN1066974 A CN 1066974A CN 91103296 CN91103296 CN 91103296 CN 91103296 A CN91103296 A CN 91103296A CN 1066974 A CN1066974 A CN 1066974A
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- 238000012545 processing Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 18
- 230000035945 sensitivity Effects 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 230000006870 function Effects 0.000 claims description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 17
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 7
- 230000003321 amplification Effects 0.000 abstract description 6
- 239000011888 foil Substances 0.000 description 7
- 241000283984 Rodentia Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 210000004763 bicuspid Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 210000004513 dentition Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 210000001548 stomatognathic system Anatomy 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
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Abstract
A microcomputerized dynamic tester for testing the jaw force of teeth is composed of a cylindrical force sensor and an instrument case, a resistance strain-plate bridge is stuck to said cylindrical force sensor, the jaw force of teeth measured by said sensor is transmitted to amplifier in said instrument case, and after amplification, it is sampled and output to computer for data processing, and after processing, it is printed by external equipment, and displayed. The amplification, collection, host and peripheral are integrated, and the instrument is convenient to carry and is an ideal instrument in the oral medical field.
Description
The present invention is widely used in the stomatology field, and scientific research in the field reaches clinically, is used to measure dynamic and static
Power also can be used for diagnosing jaw systematic disease, judges the therapeutic effect that orthodontic treatment and tooth body, artificial tooth are repaired, can also be as the means of testing of stomatognathic system biomechanics Research.
Present domestic measurement
The method of power is to be that the working sensor head of 6～8mm is placed on up and down between two teeth with thickness, advises the experimenter firmly to sting, to record the maximum biting force between two teeth up and down.Its shortcoming is: 1, can only survey the moment gmatjpdumamics, also claim static force, and the masticatory force can not survey normal laboratory rodent chow state the time; 2, this method of testing is because working head thickness has been increased interarch distance up and down, not too realistic physiology of oral cavity state.The domestic report of measuring the dynamic force in the laboratory rodent chow process that has not yet to see.Dynamic in the external mensuration laboratory rodent chow process
The method of power (masticatory force) is a lot, and wherein the development to resistance strain type sensor has report, but does not see that finished product test instrument development report is arranged.The data of having consulted is as follows:
1、Ogata K Ct al Occlusal force distribution in removable partldentures：A preliminary report.Josaka univ.Dent.Sch.1983;12：187-194
This literary composition is described is active force device on the topped abutment under a kind of mensuration base, and pick off is beam type, and foil gauge is attached on the cantilever beam, and sensor bulk is bigger, and only is applicable to and surveys base pressure.Do not see the finished product test instrument is arranged.
2、Watson CJ and Wahab M DA.Thedevelopment of an inexpensive pressure trasduer for use at denture base-mucosalsurfa interface、Br Ben tJ1984;156：135 140
A kind of manufacture method of pressure transducer introduced in this literary composition, sensor bulk is 4 * 7mm, in the double layer of metal barrier film, place a central pin, put a foil gauge on the internal layer barrier film, because of this sensor bulk greater than corona, so only be placed on base tissue surface's measuring pressure, test data utilizes simulated testing system to draw simultaneously, does not see the report that the finished product test instrument is arranged.
3、Lundgren D and laurell L.Occlusal for ces in prosthetically restored dentition：amethodological study.J oralRehabil 1984;11：29-37
The force cell of this article development is cylindrical, and 5.2 * 5.2mm uses complexity and volume big, does not see the report of making to collect and handle test data with the finished product test instrument.
In order to overcome the problems referred to above, the objective of the invention is to develop a kind of novel microcomputer dynamic force test instrument.1, sensor bulk is little, and pick off is placed in corona or the basal seat area, can measure under the laboratory rodent chow state
Surface pressure also can be measured the pressure that base undertissue is subjected to.2, the masticatory force size that records can directly be imported microsystem, and can do to calculate, show, print or storage by the desired parameters index.3, pick off, signal amplification and microcomputer data processing are integrated, form system's finished product instrument.
Microcomputer dynamic force test instrument is made up of two parts: first is a force transducer; Second portion is a microcomputerization
The force tester instrument container.One,
Force transducer adopts stainless steel alloy material, is flexible member, and it is shaped as drum type brake, includes end cap (1); Cylindrical shell (2); End cap (3).In cylindrical shell (2), paste four resistance strain gages (4), i.e. R
1～R
4, form the resistance-strain electric bridge.End cap (1) and end cap (3) are sealed in the two ends of cylindrical shell (2) respectively, have an aperture (5) on the tube diapire, and four lines of power supply resistance strain gauge bridge are drawn.Two, microcomputerization
Include in the force tester instrument container: 1, passage strain direct current amplifier; 2, data acquisition and pretreatment interface; 3, computer (computer model can be selected HX-20 for use); 4, external equipment (demonstration, printing, tape storage); 5, software program such as data acquisition, processing, microcomputerization
The force tester instrument container, a casing (6) at first will be arranged, in casing (6), insert computer cabinet (7), a panel of laying (8) below computer cabinet (7), totally four of sensor signal input sockets (9) are housed on panel (8), (10) four of toggle switch, vernier knob (11), display lamp (12) and power input socket etc., keyboard (13) is arranged on the panel of computer cabinet, function key (range switch and gang switch) (14), tape storage (15), show (16), printer (17-1), passage strain direct current amplifier and data acquisition and pretreatment interface circuit can be made circuit board, insert panel (8) below, also can insert in the computer cabinet (7), the main frame movement is arranged in the computer cabinet.
Passage strain circuits of direct current amplifier comprises: compensating circuit (17), differential operational amplifier (18) and final amplifier (19) are arranged, sensitivity adjustment potentiometer W is arranged in the compensating circuit (17)
1, balancing potentiometer W
2, transducer sensitivity potentiometer W
3100 Ω, bridge balance potentiometer W
410K and resistance R
52M, R
6, R
7The lead end of 1K * 2 and measurement zeroing switch, differential operational amplifier includes in (18): amplifier A
1, A
2, A
3, A
1, A
2Can select OPO7 for use, A
3Optional WA741, the also available adjustable potential meter of resistance R FD75K * 2, RW2K, RW aw replaces, Rf2K * 2, RF30k * 2, capacitor C
1～C
30.02 μ, final amplifier have amplifier A in (19)
4, optional WA741, potentiometer W
52K, resistance R W4,10K, Rf4,2K * 2, RF4,24K and 3K * 2, capacitor C
4Connect power supply 5V and ground respectively 0.02 μ, circuit connecting relation are the inputs 1.3 of resistance strain gage electric bridge, outfan 2.4 connects behind compensating circuit, A in the differential operational amplifier (18)
1A
2Input, its output termination amplifier A
3Input, A
3Output termination final amplifier (19), A in the final amplifier (19)
4Outfan remove to connect computer range identification circuit (20).The design of passage strain direct current amplifier is: 1, high input impedance is with being in parallel differential operational amplifier, can suppress common-mode signal effectively, only differential wave is amplified, reasonably select RFD, RW, each value of RF, Rf, just can reach desired amplification quantity.2, the sensitivity of amplifier, range and equilibrium problem: the sensitivity adjustment of amplifier can substitute with the RW resistance in poor the putting that be in parallel by a variable resistance aw and realize.The method that changes range is to adopt to change final amplifier A
4Feedback resistance realize that RF4 is connected in series by three resistance, " 1 " bit representation 5kgf shelves, this moment A
4Amplification reduce by 5 times (3 times) than 5kgf shelves; Range " 3 " bit representation 50kgf shelves, amplification reduce by 10 times during than 5kgf.The balance of amplifier self be lean against the final stage in-phase end in addition suitable positive voltage realize that resistance R W4 just plays this effect.3, computer is that range identification circuit 1,2,3 three the circuit shelves of computer search that link to each other with computer just can be learnt the class of measuring at that time to the identification of range, then just can be automatically by the amplification deal with data of this class.Gang switch in the range identification circuit (20) can place under the panel, and range switch also can place on the panel.Data acquisition and pretreatment interface circuit can be made into interface board (21) and insert in the casing (6), on interface board, have central processing unit, the Z80CPU of oneself and be solidificated in operation processing program in the EPROM2716 memory, can gather and handle four channel C H simultaneously by A/D changer ADC0809
1～CH
4 
The signal of force transducer input, two inputs that are used for receiving the range on off state of driver 74LS244, first data by 1488 serials output, are delivered to HX-20, computer for further processing after preliminary treatment and arrangement.Interface board (21) is general known technology, and circuit diagram omits, and annexation as shown in Figure 9.
Data acquisition, processing, software program comprises has: be solidificated in first data acquisition, handling procedure and HX-20 computer processing among interface board (21) EPROM.Data acquisition just, handling procedure are sampled the analog quantity of four channel C H1～CH4 by ADC0809, sampling interval is 0.06 second, each passage has 3 kinds of ranges, totally 12 switching values input to 74LS244 and judge identification automatically by first data acquisition, handling procedure, after the current signal of adopting, state arrangement, send successively with serial mode, send HX-20 computer, the HX-20 computer processing is after the data that first data acquisition, handling procedure are sent here are done further arrangement, calculating, by peripheral hardware, demonstration, printing or storage, output.
Advantage of the present invention is: volume is little, in light weight, simple to operate, multiple functional, calculating reaches easy to carry rapidly.Simultaneously,
The dynamic masticatory force of the interior survey of corona that force transducer volume I is directly installed on premolars or grinds one's teeth in sleep also can be installed in base tissue surface and survey base undertissue pressure.
Force transducer design principle novelty is pasted four resistance strain gages in the very little cylindrical wall of volume, and according to the characteristics of foil gauge diverse location and direction, formation temperature compensates automatically, makes electric bridge that maximum output voltage be arranged and avoids
Advantages such as the deflection influence of power.The present invention tests accurately, hour can select the range shelves of 5kg or 25kg when test base force value, works as test
During the face maximum biting force, can select 50kg range shelves, satisfy the requirement of different tests, be the ideal testing equipment in field, medical science oral cavity.
The present invention has following accompanying drawing:
Fig. 1, functional-block diagram;
Fig. 2, strain transducer tube view;
Fig. 3, resistance strain gage layout view;
Fig. 4, microcomputer-based Dynamic
The force tester sketch map;
Fig. 5, passage strain circuits of direct current amplifier figure (single passage);
Fig. 6, differential operational amplifier (material 8) circuit diagram;
Fig. 9, data acquisition and give the treatment circuit theory diagram;
Figure 10, first data acquisition, handling procedure flow chart;
Figure 11, HX-20 computer processing flow chart.
Figure 12～16 are the image of screen display.
Number in the figure is as follows:
1, end cap; 2, cylindrical shell; 3, end cap; 4, foil gauge; 5, aperture; 6, casing; 7, computer cabinet; 8, panel; 9, socket (four); 10, toggle switch (four); 11, vernier knob (four); 12, display lamp; 13, keyboard; 14, function key (range switch, connection merit switch); 15, tape storage; 16, show; The 17-1 printer; 17 compensating circuits:
Include: potentiometer: sensitivity adjustment W1 is optional
Balance W2 is optional
Transducer sensitivity W3 100 Ω
Bridge balance W4 10K
Resistance: R5 2M, R6 1K, R7 1K
18, differential operational amplifier:
Include: amplifier: A1, A2 can select OP07
A3 can select μ A741
The also available adjustable potential meter of resistance: RFD75K * 2, RW2K(AW replaces)
Electric capacity: C1～C3 0.02W
19, final amplifier:
Include: amplifier: the optional UA741 of A4
Potentiometer: W5 2K
Resistance: RW4 10K, Rf4 2K * 2
RF4 24K and 3K * 2
Electric capacity: C4 0.02W
20, range identification circuit
21, interface board
Include: central processing unit Z80CPU, memory EPROM2716, A/D changer ADC0809, driver 74LS244 * 2, serial output 1488
Implementation process of the present invention and use operation as follows: the pick off profile is drum type brake, adopts stainless steel alloy material, is flexible member, physical dimension: outside diameter of cylinder 4.6MM, and internal diameter 4.0MM, height is 4.3MM, cylinder has two end caps up and down, as shown in Figure 1.Four foil resistance foil gauge R1～R4, basic grid size 1 * 1MM2, the high-precision level of confidentiality of 120 Ω.In the cylinder inner wall stage casing, along the circumferential direction at a distance of 90 ° with polyvinyl alcohol 4 foil gauges of the first and second aldehyde glues that contract, glue heating cure.4 lead-out wires are drawn by aperture and with silicone rubber the hole are sealed.End cap seal is at the cylindrical shell two ends.The range 50,250 of pick off, 500N(newton) (about 5,25,50kgf) third gear, 10～40 ℃ of operating ambient temperatures also satisfy test and art is wanted in sterilization, and reusable.Microcomputerization
The making of force tester instrument container is: at first manufacture a portable casing (6), HX-20 computer cabinet (7) is inserted in the casing (6), be covered with panel (8) in the casing (6), panel is equipped with socket on (8), knob, display lamp etc.As shown in Figure 4, with passage strain circuits of direct current amplifier plate, data acquisition and the pretreatment interface board that welds, adjust in the casing of packing into (6).Hardware annexation of the present invention is that force transducer links to each other by the input of cable plug with passage strain direct current amplifier, the outfan of passage strain direct current amplifier connects the input of data acquisition pretreatment interface, the outfan of interface connects the HX-20 computer, and computer connects external equipment, demonstration, printing etc.Operating procedure of the present invention is: energized at first, check whether each parts patches reliably, then start.
The start working procedure will show information as shown in figure 12 on the screen, as carry out static force and measure then key entry " 1 ", and dynamic force measurement is keyed in " 2 ".
Choose the back screen-refresh and be Figure 13 situation, input name and date, form is not limit.
Screen display Figure 14 situation after being totally lost.
Promptly carry out data acquisition after pressing an any key, screen is Figure 15 situation.
The intact back of data acquisition screen will refresh automatically to Figure 16 situation, calculate and handle.
Finish back print data and curve and turn back to initial menu can be measured next time.
Claims (4)
1, a kind of novel microcomputerization is dynamic
Force tester; It is characterized in that: this device is made up of two parts, and first is
Force transducer, second portion are microcomputerizations
The force tester instrument container, one,
Force transducer adopts stainless steel alloy material, is flexible member, and it is shaped as drum type brake, includes end cap (1), cylindrical shell (2), end cap (3), pastes four resistance strain gages (4), i.e. R in cylindrical shell (2)
1～R
4Form the resistance-strain electric bridge, end cap (1) and (3) are sealed in the two ends of cylindrical shell (2) respectively, have aperture (5) on the tube diapire, and the lead-out wire of power supply resistance strain gauge bridge is drawn.Two, microcomputerization
Include in the force tester instrument container: 1, passage strain direct current amplifier; 2, data acquisition and pretreatment interface; 3, computer; 4, external equipment (demonstration, printing, tape storage); 5, data acquisition process software program.Microcomputerization
The force tester instrument container, at first make a casing (6), in casing (6), insert computer cabinet (7), laying panel (8) below computer cabinet (7) is equipped with sensor signal input socket (9), toggle switch (10), vernier knob (11), display lamp (12) and supply socket on panel (8).Keyboard (13), function key (range switch and gang switch) (14), tape storage (15) are arranged on the panel of computer cabinet, show (16), printer (17), passage strain direct current amplifier and data acquisition and pretreatment interface, circuit can make circuit board insert panel (8) below, also can insert in the computer cabinet (7).
2, device according to claim 1 is characterized in that: passage strain circuits of direct current amplifier includes: compensating circuit (17), differential operational amplifier (18) and final amplifier (19) have sensitivity adjustment potentiometer W in the compensating circuit (17)
1, balancing potentiometer W
2, transducer sensitivity potentiometer W
3, bridge balance potentiometer W
4And resistance R
5～R
9And lead end, differential operational amplifier has amplifier A in (18)
1～A
3, resistance R ED, RW, Rf, capacitor C
1～C
3, final amplifier has amplifier A in (19)
4, potentiometer W
3, resistance R W4, Rf4, RF4, capacitor C
4, the circuit connection connects power supply and ground respectively by resistance strain gage electric bridge 1,3, and outfan 2,4 meets the A in the differential operational amplifier (18) behind compensating circuit
1, A
2Input, its output termination amplifier A
3Input, A
3Outfan connect final amplifier (19), the A in the final amplifier (19)
4Outfan remove to connect computer range identification circuit (20).
3, device according to claim 1 and 2, it is characterized in that: data acquisition and pretreatment interface circuit can be made into interface board (21) and insert in the cabinet (6), have oneself central processing unit Z80CPU and the first data acquisition, the handling procedure that are solidificated among the memory EPROM on interface board, A/D changer 0809 can be gathered four channel C H1～CH4 simultaneously
The signal of force transducer input, driver 74LS244(2 sheet) be used for receiving the input signal of range on off state, first data are delivered to the HX-20 computer for further processing by 1488 serials output after preliminary treatment, arrangement.
4, device according to claim 3, it is characterized in that: data acquisition, process software programs includes: be solidificated in the first data acquisition among the interface board EPROM, handling procedure and HX-20 computer processing, data acquisition just, the analog quantity that handling procedure is carried passage is sampled by the A/D changer, each passage have 3 kinds of ranges totally 12 switching values input to 74LS244, by first data acquisition, handling procedure is discerned judgement automatically, the current signal of adopting, state arrangement back is sent successively with serial mode and is sent HX-20 computer, the HX-20 computer processing is with first data acquisition, the data that handling procedure is sent here are done further arrangement, after the calculating, show by peripheral hardware, print or storage, output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91103296A CN1034390C (en) | 1991-05-23 | 1991-05-23 | Microcomputerized dynamic occlusion force tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91103296A CN1034390C (en) | 1991-05-23 | 1991-05-23 | Microcomputerized dynamic occlusion force tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1066974A true CN1066974A (en) | 1992-12-16 |
| CN1034390C CN1034390C (en) | 1997-04-02 |
Family
ID=4906017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91103296A Expired - Fee Related CN1034390C (en) | 1991-05-23 | 1991-05-23 | Microcomputerized dynamic occlusion force tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034390C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104127253A (en) * | 2014-08-11 | 2014-11-05 | 福州大学 | Method for measuring orthodontic force of traceless appliance with coating thickness compensation |
| CN104931185A (en) * | 2015-06-02 | 2015-09-23 | 北京天源科创风电技术有限责任公司 | Method and equipment for evaluating technological property of bolt installation |
| CN104997569A (en) * | 2015-07-28 | 2015-10-28 | 安徽机电职业技术学院 | Comprehensive tooth measuring instrument based on detachable tooth socket |
| CN105012039A (en) * | 2015-07-28 | 2015-11-04 | 安徽工程大学 | Comprehensive tooth measuring instrument |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4521186A (en) * | 1983-05-17 | 1985-06-04 | Harold Wodlinger | System for determining the first prematurity contact of dental occlusion |
| US4734034A (en) * | 1985-03-29 | 1988-03-29 | Sentek, Incorporated | Contact sensor for measuring dental occlusion |
-
1991
- 1991-05-23 CN CN91103296A patent/CN1034390C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104127253A (en) * | 2014-08-11 | 2014-11-05 | 福州大学 | Method for measuring orthodontic force of traceless appliance with coating thickness compensation |
| CN104127253B (en) * | 2014-08-11 | 2016-02-03 | 福州大学 | A kind of seamless appliance Orthodontic force measuring method that there is coating thickness and compensate |
| CN104931185A (en) * | 2015-06-02 | 2015-09-23 | 北京天源科创风电技术有限责任公司 | Method and equipment for evaluating technological property of bolt installation |
| CN104931185B (en) * | 2015-06-02 | 2017-08-04 | 北京天源科创风电技术有限责任公司 | Bolt mounting process performance estimating method and equipment |
| CN104997569A (en) * | 2015-07-28 | 2015-10-28 | 安徽机电职业技术学院 | Comprehensive tooth measuring instrument based on detachable tooth socket |
| CN105012039A (en) * | 2015-07-28 | 2015-11-04 | 安徽工程大学 | Comprehensive tooth measuring instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1034390C (en) | 1997-04-02 |
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