CN104287859A - Calibration device and method for root canal length measurement instrument - Google Patents
Calibration device and method for root canal length measurement instrument Download PDFInfo
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- CN104287859A CN104287859A CN201410604363.6A CN201410604363A CN104287859A CN 104287859 A CN104287859 A CN 104287859A CN 201410604363 A CN201410604363 A CN 201410604363A CN 104287859 A CN104287859 A CN 104287859A
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Abstract
The invention relates to a calibration device and method for a root canal length measurement instrument. The calibration device comprises a measurement signal generating circuit, an on-off control circuit, an analog electronic switching circuit, a calibration load circuit and an external measurement circuit, wherein the measurement signal generating circuit is used for generating a current measurement signal, detecting the voltage signal of the calibration load circuit and generating a calibrated current measurement signal; the on-off control circuit is used for controlling the analog electronic switching circuit to be connected to the calibration load circuit or the external measurement circuit; the analog electronic switching circuit is used for outputting the current measurement signal to the calibration load circuit or outputting the calibrated current measurement signal to the external measurement circuit; the external measurement circuit is used for outputting the calibrated current measurement signal to an external root canal file and lip hook circuit. Compared with the prior art, the calibration device has the advantages that the measuring circuit is small in size, the price is low, the failure rate is low, the power consumption is low, the control is simple, the internal structure of the root canal length measurement instrument is more compact, the whole size is smaller, the cost is lower, the function is more reliable, and the calibration accuracy is high.
Description
Technical field
The present invention relates to length-measuring appliance, particularly a kind of calibrating installation for root canal length meter and method.
Background technology
Root canal length meter (being called for short " root survey instrument ") is a kind of department of stomatology auxiliary facilities for measuring tooth root length of tube, for helping doctor before carrying out tooth root canal, measures the physical length that tooth root pipe arrives tooth apical area.Root canal file is inserted in tooth root pipe when using by root canal length meter, is then connected by the circuit of root canal file with root canal length meter main frame; Another electrode of root canal length meter main frame is linked up with circuit with the lip hung in the oral cavity and is connected.Root canal file sends the electric current of two different frequencies in tooth root pipe, and the ratio (this ratio not by the impact of root pipe Inner electrolysis matter) of two electric currents by the resistance value of root pipe measured by main frame, determines the position of root canal file point in root pipe.When root canal file arrives apical area, the main frame of root canal length meter can show in real time and give the alarm, and doctor takes out the physical length that root canal file measurement enters into tooth root pipe, just can measure tooth root pipe physical length.
Because environment for use is different with occupation mode, root can be caused to survey instrument and in use occur error, therefore before root surveys instrument use, reply measurement data is calibrated, and makes the detection of root survey instrument more accurate.The method of calibration is exactly survey in the circuit design of instrument at root to add calibration circuit, use relay to carry out handover measurement signal generating circuit in existing calibration circuit structure and receive measuring-signal calibration circuit or measuring-signal output circuit, relay access times there will be the large even loose contact of resistive in conducting, calibration accuracy is reduced even failed, and its overall volume is large, cost is high, so be necessary to improve prior art.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of calibrating installation for root canal length meter and method, this root canal length meter incidental measuring circuit volume is little, low price, failure rate is low, power consumption are little, control is simple, thus root canal length meter internal structure can be made compacter, overall volume is less, cost is lower, function is more reliable, calibration accuracy is high.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of calibrating installation for root canal length meter, comprises measuring-signal and produces circuit, ON-OFF control circuit, analog electronic switching circuit, measuring-signal calibration circuit and measuring-signal output circuit;
Described measuring-signal produces circuit, it is for generation of current measurement signal, and to analog electronic switching circuit input current measuring-signal, also for detecting the voltage signal of measuring-signal calibration circuit, and produce the current measurement signal after calibration according to the voltage signal detecting measuring-signal calibration circuit, the current measurement signal after analog electronic switching circuit input calibration;
Described ON-OFF control circuit, it is for generation of low and high level control signal, and to analog electronic switching circuit input high level control signal, control simulation electronic switching circuit connects school measuring-signal calibration circuit, also for generation of low level control signal, and to analog electronic switching circuit input low level control signal, control simulation electronic switching circuit connects external measuring circuitry;
Described analog electronic switching circuit, when it is for receiving measuring-signal calibration circuit, to measuring-signal calibration circuit output current measuring-signal, when receiving external measuring circuitry, exports the current measurement signal after calibration to measuring-signal output circuit;
Described measuring-signal calibration circuit, its current measurement signal exported for receiving analog electronic switching circuit, and produce voltage signal;
Described measuring-signal output circuit, its for receive analog electronic switching circuit export calibration after current measurement signal, externally root canal file and lip hook circuit export calibration after current measurement signal.
The invention has the beneficial effects as follows: the measuring circuit volume of root canal length meter is little, root canal length meter internal structure can be made compacter, and the overall volume of root canal length meter is less; Measuring circuit uses components and parts low price, makes root canal length meter cost lower; Simulant electronic switch there will not be the large or loose contact of interior resistive, and dependable performance, failure rate is low, control are simple; And measuring circuit components and parts used power consumption is little, precision is high.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described measuring-signal produces circuit and comprises signal source, and described signal source is connected with the signal input part of described analog electronic switching circuit.
Further, described ON-OFF control circuit comprises resistance R1 ~ R2, one end of described resistance R1 is connected with external control signal generator, the other end of described resistance R1 is connected with one end of described resistance R2, and be connected with the control signal input of described simulant electronic switch, the other end ground connection of described resistance R2.
Further, described analog electronic switching circuit is that four-way switch passage is in parallel.
The beneficial effect of above-mentioned further scheme is adopted to be: simulant electronic switch is that four-way switch passage is in parallel, and simulant electronic switch conducting internal resistance is reduced greatly, and the certainty of measurement of root canal length meter is higher.
Further, described measuring-signal calibration circuit comprises electric capacity C1 and resistance R3, and one end of described electric capacity C1 is connected with one end of resistance R3, and the other end of described electric capacity C1 is connected with the outfan of described simulant electronic switch, the other end ground connection of described resistance R3.
Further, described electric capacity C1 is 0.1uF, and resistance R3 is 3.6K Ω.
Further, described measuring-signal output circuit comprises externally measured line interface and resistance R4, one end of described externally measured line interface and one end series connection of resistance R4, the described other end of externally measured line interface is connected with the outfan of simulant electronic switch, the other end ground connection of described resistance R4, described externally measured line interface is linked up with circuit with outside root canal file and lip and is connected, and current measurement signal is transferred to described outside root canal file and lip hook circuit by described externally measured line interface.
For a How It Works for the calibrating installation of root canal length meter, comprise the steps:
Step S1. measuring-signal produces circuit generation current measuring-signal, and to analog electronic switching circuit input current measuring-signal;
Step S2. ON-OFF control circuit produces high-level control signal, and to analog electronic switching circuit 3 input high level control signal, control simulation electronic switching circuit connects measuring-signal calibration circuit;
Step S3. analog electronic switching circuit is to measuring-signal calibration circuit output current measuring-signal;
Step S4. measuring-signal produces the voltage signal of circuit to measuring-signal calibration circuit and detects, and produce the current measurement signal after calibration according to the voltage signal detecting measuring-signal calibration circuit, and to the current measurement signal after analog electronic switching circuit input calibration;
Step S5. ON-OFF control circuit produces low level control signal, and to analog electronic switching circuit input low level control signal, control simulation electronic switching circuit connects measuring-signal output circuit;
Step S6. analog electronic switching circuit exports the current measurement signal after calibration to measuring-signal output circuit;
Step S7. measuring-signal output circuit externally root canal file and lip hook circuit exports the current measurement signal after calibrating.
The beneficial effect of above-mentioned further scheme is adopted to be: ON-OFF control circuit is to described simulant electronic switch transmission high level signal or low level, described simulant electronic switch receives described calibration load place or described externally measured end place, make root canal length meter control more simple, function is more reliable.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of calibrating installation for root canal length meter of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, measuring-signal produces circuit, and 2, ON-OFF control circuit, 3, analog electronic switching circuit, 4, measuring-signal calibration circuit, 5, measuring-signal output circuit.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of calibrating installation for root canal length meter, comprises measuring-signal and produces circuit 1, ON-OFF control circuit 2, analog electronic switching circuit 3, measuring-signal calibration circuit 4 and measuring-signal output circuit 5;
Described measuring-signal produces circuit 1, it is for generation of current measurement signal, and to analog electronic switching circuit 3 input current measuring-signal, also for detecting the voltage signal of measuring-signal calibration circuit 4, and produce the current measurement signal after calibration according to the voltage signal detecting measuring-signal calibration circuit 4, input the current measurement signal after calibration to analog electronic switching circuit 3;
Described ON-OFF control circuit 2, it is for generation of high-level control signal, and to analog electronic switching circuit 3 input high level control signal, control simulation electronic switching circuit 3 connects school measuring-signal calibration circuit 4, also for generation of low level control signal, and to analog electronic switching circuit 3 input low level control signal, control simulation electronic switching circuit 3 connects external measuring circuitry 5;
Described analog electronic switching circuit 3, when it is for receiving measuring-signal calibration circuit 4, to measuring-signal calibration circuit 4 output current measuring-signal, when receiving external measuring circuitry 5, exports the current measurement signal after calibration to measuring-signal output circuit 5;
Described measuring-signal calibration circuit 4, its current measurement signal exported for receiving analog electronic switching circuit 3, and produce voltage signal;
Described measuring-signal output circuit 5, its for receive analog electronic switching circuit 3 export calibration after current measurement signal, externally root canal file and lip hook circuit export calibration after current measurement signal.
Described measuring-signal produces circuit 1 and comprises signal source, and described signal source is connected with the signal input part of described analog electronic switching circuit 3.
Described ON-OFF control circuit 2 comprises resistance R1 ~ R2, one end of described resistance R1 is connected with external control signal generator, the other end of described resistance R1 is connected with one end of described resistance R2, and is connected with the control signal input of described simulant electronic switch, the other end ground connection of described resistance R2.
Described analog electronic switching circuit 3 is that four-way switch passage is in parallel.
Described measuring-signal calibration circuit 4 comprises electric capacity C1 and resistance R3, and one end of described electric capacity C1 is connected with one end of resistance R3, and the other end of described electric capacity C1 is connected with the outfan of described simulant electronic switch, the other end ground connection of described resistance R3.
Described electric capacity C1 is 0.1uF, and resistance R3 is 3.6K Ω.
Described measuring-signal output circuit 5 comprises externally measured line interface and resistance R4, one end of described externally measured line interface and one end series connection of resistance R4, the described other end of externally measured line interface is connected with the outfan of simulant electronic switch, the other end ground connection of described resistance R4, described externally measured line interface is linked up with circuit with outside root canal file and lip and is connected, and current measurement signal is transferred to described outside root canal file and lip hook circuit by described externally measured line interface.
Also comprise power module, described power module is connected with the power input 12 of described analog electronic switching circuit, and described power module comprises electric capacity C2, and electric capacity C2 one end connects power supply VCC end, and its other end ground connection.
For a How It Works for the calibrating installation of root canal length meter, comprise the steps:
Step S1. measuring-signal produces circuit 1 generation current measuring-signal, and to analog electronic switching circuit 3 input current measuring-signal;
Step S2. ON-OFF control circuit 2 produces high-level control signal, and to analog electronic switching circuit 3 input high level control signal, control simulation electronic switching circuit 3 connects measuring-signal calibration circuit 4;
Step S3. analog electronic switching circuit 3 is to measuring-signal calibration circuit 4 output current measuring-signal;
The voltage signal that step S4. measuring-signal produces circuit 1 pair of measuring-signal calibration circuit 4 detects, and produce the current measurement signal after calibration according to the voltage signal detecting measuring-signal calibration circuit 4, and input the current measurement signal after calibration to analog electronic switching circuit 3;
Step S5. ON-OFF control circuit 2 produces low level control signal, and to analog electronic switching circuit 3 input low level control signal, control simulation electronic switching circuit 3 connects measuring-signal output circuit 5;
Step S6. analog electronic switching circuit 3 exports the current measurement signal after calibration to measuring-signal output circuit 5;
Step S7. measuring-signal output circuit 5 externally root canal file and lip hook circuit exports the current measurement signal after calibrating.
The work process of this device, ON-OFF control circuit 2 transmits low level signal to described analog electronic switching circuit 3, four overlap joint lines 14 of described analog electronic switching circuit 3 input, 2, 6, 10 four of receiving analog electronic switching circuit 3 outfan respectively overlap lines 13, 1, 5, on 9, measuring-signal produces circuit 1 by analog electronic switching circuit 3 to calibration load circuit 4 transmission current measuring-signal, measuring-signal produces the voltage of circuit 1 testing calibration load circuit 4, and according to calibrating the voltage calibration output voltage of load circuit 4, realize exporting calibration measurement current signal, ON-OFF control circuit 2 transmits high level signal to described analog electronic switching circuit 3, four overlap joint lines 14 of described analog electronic switching circuit 3 input, 2, 6, 10 four of receiving analog electronic switching circuit 3 outfan respectively overlap lines 15, 3, 7, on 11, measuring-signal produces circuit 1 by the current measurement signal after analog electronic switching circuit 3 externally measuring circuit 5 transmission calibration.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included in protection scope of the present invention it.
Claims (8)
1. for a calibrating installation for root canal length meter, it is characterized in that: comprise measuring-signal and produce circuit (1), ON-OFF control circuit (2), analog electronic switching circuit (3), measuring-signal calibration circuit (4) and measuring-signal output circuit (5);
Described measuring-signal produces circuit (1), it is for generation of current measurement signal, and to analog electronic switching circuit (3) input current measuring-signal, also for detecting the voltage signal of measuring-signal calibration circuit (4), and produce the current measurement signal after calibration according to the voltage signal detecting measuring-signal calibration circuit (4), the current measurement signal after analog electronic switching circuit (3) input calibration;
Described ON-OFF control circuit (2), it is for generation of low and high level control signal, and to analog electronic switching circuit (3) input high level control signal, control simulation electronic switching circuit (3) connects school measuring-signal calibration circuit (4), also for generation of low level control signal, and to analog electronic switching circuit (3) input low level control signal, control simulation electronic switching circuit (3) connects external measuring circuitry (5);
Described analog electronic switching circuit (3), when it is for receiving measuring-signal calibration circuit (4), to measuring-signal calibration circuit (4) output current measuring-signal, when receiving external measuring circuitry (5), export the current measurement signal after calibration to measuring-signal output circuit (5);
Described measuring-signal calibration circuit (4), its current measurement signal exported for receiving analog electronic switching circuit (3), and produce voltage signal;
Described measuring-signal output circuit (5), it is for the current measurement signal after the calibration that receives analog electronic switching circuit (3) and export, and externally root canal file and lip hook circuit export the current measurement signal after calibration.
2. a kind of calibrating installation for root canal length meter according to claim 1, it is characterized in that: described measuring-signal produces circuit (1) and comprises signal source, and described signal source is connected with the signal input part of described analog electronic switching circuit (3).
3. a kind of calibrating installation for root canal length meter according to claim 1, it is characterized in that: described ON-OFF control circuit (2) comprises resistance R1 ~ R2, one end of described resistance R1 is connected with external control signal generator, the other end of described resistance R1 is connected with one end of described resistance R2, and be connected with the control signal input of described simulant electronic switch, the other end ground connection of described resistance R2.
4. a kind of calibrating installation for root canal length meter according to claim 1, is characterized in that: described analog electronic switching circuit (3) is that four-way switch passage is in parallel.
5. a kind of calibrating installation for root canal length meter according to claim 1, it is characterized in that: described measuring-signal calibration circuit (4) comprises electric capacity C1 and resistance R3, one end of described electric capacity C1 is connected with one end of resistance R3, the other end of described electric capacity C1 is connected with the outfan of described simulant electronic switch, the other end ground connection of described resistance R3.
6. a kind of calibrating installation for root canal length meter according to claim 5, it is characterized in that: described electric capacity C1 is 0.1uF, resistance R3 is 3.6K Ω.
7. a kind of calibrating installation for root canal length meter according to claim 1, it is characterized in that: described measuring-signal output circuit (5) comprises externally measured line interface and resistance R4, one end of described externally measured line interface and one end series connection of resistance R4, the described other end of externally measured line interface is connected with the outfan of simulant electronic switch, the other end ground connection of described resistance R4, described externally measured line interface is linked up with circuit with outside root canal file and lip and is connected, current measurement signal is transferred to described outside root canal file and lip hook circuit by described externally measured line interface.
8. for a How It Works for the calibrating installation of root canal length meter, it is characterized in that, comprise the steps:
Step S1. measuring-signal produces circuit (1) generation current measuring-signal, and to analog electronic switching circuit (3) input current measuring-signal;
Step S2. ON-OFF control circuit (2) produces high-level control signal, and to analog electronic switching circuit (3) input high level control signal, control simulation electronic switching circuit (3) connects measuring-signal calibration circuit (4);
Step S3. analog electronic switching circuit (3) is to measuring-signal calibration circuit (4) output current measuring-signal;
Step S4. measuring-signal produces circuit (1) voltage signal to measuring-signal calibration circuit (4) and detects, and produce the current measurement signal after calibration according to the voltage signal detecting measuring-signal calibration circuit (4), and to the current measurement signal after analog electronic switching circuit (3) input calibration;
Step S5. ON-OFF control circuit (2) produces low level control signal, and to analog electronic switching circuit (3) input low level control signal, control simulation electronic switching circuit (3) connects measuring-signal output circuit (5);
Step S6. analog electronic switching circuit (3) exports the current measurement signal after calibration to measuring-signal output circuit (5);
Step S7. measuring-signal output circuit (5) externally root canal file and lip hook circuit exports the current measurement signal after calibrating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410604363.6A CN104287859B (en) | 2014-10-30 | 2014-10-30 | A kind of calibrating installation for root canal length meter and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410604363.6A CN104287859B (en) | 2014-10-30 | 2014-10-30 | A kind of calibrating installation for root canal length meter and method |
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| CN104287859A true CN104287859A (en) | 2015-01-21 |
| CN104287859B CN104287859B (en) | 2016-01-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667615A (en) * | 2016-12-30 | 2017-05-17 | 佛山科学技术学院 | Interconnection method for root canal length meter and root canal therapy instrument |
| CN109199624A (en) * | 2018-08-15 | 2019-01-15 | 施程峰 | A kind of method and device for calibrating root canal length meter |
| CN112932693A (en) * | 2019-12-10 | 2021-06-11 | 白李生物科技有限公司 | Digital measuring device and measuring method thereof |
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| CN1094750C (en) * | 1996-02-22 | 2002-11-27 | 株式会社森田制作所 | Handpiece having root canal length measurement function |
| EP1642547A1 (en) * | 2004-09-30 | 2006-04-05 | W & H Dentalwerk Bürmoos GmbH | Dental handpiece having means for measuring the rooth canal length |
| EP2044904B1 (en) * | 2007-09-27 | 2010-05-19 | W & H Dentalwerk Bürmoos GmbH | Dental handpiece for the treatment of root canals |
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2014
- 2014-10-30 CN CN201410604363.6A patent/CN104287859B/en active Active
Patent Citations (5)
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| CN1094750C (en) * | 1996-02-22 | 2002-11-27 | 株式会社森田制作所 | Handpiece having root canal length measurement function |
| EP1642547A1 (en) * | 2004-09-30 | 2006-04-05 | W & H Dentalwerk Bürmoos GmbH | Dental handpiece having means for measuring the rooth canal length |
| JP2006102497A (en) * | 2004-09-30 | 2006-04-20 | W & H Dentalwerk Burmoos Gmbh | Dental handpiece with root canal length measurement function |
| EP2044904B1 (en) * | 2007-09-27 | 2010-05-19 | W & H Dentalwerk Bürmoos GmbH | Dental handpiece for the treatment of root canals |
| US7972135B2 (en) * | 2007-09-27 | 2011-07-05 | W&H Dentalwerk Bürmoos GmbH | Dental handpiece for root canal treatment and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667615A (en) * | 2016-12-30 | 2017-05-17 | 佛山科学技术学院 | Interconnection method for root canal length meter and root canal therapy instrument |
| CN106667615B (en) * | 2016-12-30 | 2018-10-12 | 佛山科学技术学院 | The interconnecting method of root canal length meter and therapeutic instrument for root canal |
| CN109199624A (en) * | 2018-08-15 | 2019-01-15 | 施程峰 | A kind of method and device for calibrating root canal length meter |
| CN112932693A (en) * | 2019-12-10 | 2021-06-11 | 白李生物科技有限公司 | Digital measuring device and measuring method thereof |
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| CN104287859B (en) | 2016-01-13 |
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