CN203790071U - Root tube length measuring instrument with adjustable display screen brightness - Google Patents
Root tube length measuring instrument with adjustable display screen brightness Download PDFInfo
- Publication number
- CN203790071U CN203790071U CN201420110980.6U CN201420110980U CN203790071U CN 203790071 U CN203790071 U CN 203790071U CN 201420110980 U CN201420110980 U CN 201420110980U CN 203790071 U CN203790071 U CN 203790071U
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- chip
- backlight driving
- driving chip
- capacitor
- root canal
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- Expired - Lifetime
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- 239000003990 capacitor Substances 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 210000004262 dental pulp cavity Anatomy 0.000 claims description 29
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model discloses a root tube length measuring instrument with adjustable display screen brightness. The root tube length measuring instrument mainly comprises a host machine, a root tube file and a lip hook, wherein a host machine circuit arranged in the host machine comprises a battery, a single-chip microcomputer, a power conversion chip, a backlight driving chip, capacitors C1-C4, an inductor L1 and a voltage-stabilizing diode D1; the data end of the display is connected with the input/output end of the single-chip microcomputer; the root tube file and the lip hook are connected with different input/output ends on the single-chip microcomputer respectively. By adopting the root tube length measuring instrument, the use power of the root measuring instrument can be lowered, and the service life of the battery is prolonged.
Description
Technical field
This utility model relates to a kind of department of stomatology auxiliary facilities, is specifically related to the adjustable root canal length meter of a kind of brightness of display screen.
Background technology
Root canal length meter (root survey instrument) is a kind of for measuring the department of stomatology auxiliary facilities of tooth root length of tube, for helping doctor carrying out before tooth root canal, measures the physical length of tooth root pipe arrival tooth apical area.Root canal length meter is connected root canal file while use with the circuit of root canal length meter main frame, then root canal file is inserted in tooth root pipe; Another electrode of root canal length meter main frame is connected with the lip hook circuit hanging in oral cavity.Root canal file sends the electric current of two different frequencies in tooth root pipe, and main frame is measured two electric currents by the ratio (this ratio is not subject to electrolytical impact in root pipe) of the resistance value of root pipe, determines the position of root canal file point in root pipe.When root canal file arrives when apical area, on the host display of root canal length meter, can show in real time, and give the alarm, doctor takes out root canal file measurement and enters into the physical length of tooth root pipe, just can measure tooth root pipe physical length.
On the main frame of existing root canal length meter, be conventionally provided with the colorful display screen that can show in real time tooth root pipe situation, and display screen is the parts of the power consumption of whole equipment.Existing brightness of display screen is fixing nonadjustable, can only show with a certain specific brightness the very power consumption of this brightness display mode, the service time of greatly reducing battery electric quantity.
Utility model content
Technical problem to be solved in the utility model is to provide the adjustable root canal length meter of a kind of brightness of display screen, and it can reduce the use power of root survey instrument, the service time of prolongation battery electric quantity.
For addressing the above problem, this utility model is achieved through the following technical solutions:
The root canal length meter that brightness of display screen is adjustable, it is mainly made up of main frame, root canal file and lip hook; Wherein in main frame, be provided with host circuit, this host circuit comprises battery, single-chip microcomputer and display; The data terminal of display connects the input/output terminal of single-chip microcomputer, and root canal file is connected from the different input/output terminal on single-chip microcomputer respectively with lip hook; Its difference is that described host circuit also further comprises power conversion chip, backlight driving chip, capacitor C 1～C4, inductance L 1 and Zener diode D1; The positive pole of battery is connected on the voltage input end of power conversion chip, and the voltage output end of power conversion chip connects the power positive end of single-chip microcomputer; After capacitor C 3 and capacitor C 4 are parallel with one another, one terminates on the voltage input end of power conversion chip, and the other end is connected on the earth terminal of power conversion chip; The Enable Pin of backlight driving chip is connected with the input/output terminal of single-chip microcomputer; The voltage input end of backlight driving chip is divided into 2 tunnels, and a road directly connects anode, and another road directly connects battery cathode through capacitor C 1; The switch terminals of backlight driving chip is divided into 2 tunnels after Zener diode D1, and a road directly connects the backlight positive pole of display, and another road is connected with battery cathode through capacitor C 2; The voltage input end of one end backlight driving chip of inductance L 1, the other end connects the switch terminals of backlight driving chip; The digital control end of brightness of backlight driving chip connects the backlight negative pole of display; The earth terminal of the power supply negative terminal of single-chip microcomputer, the earth terminal of power conversion chip and backlight driving chip is connected with battery cathode simultaneously.
In such scheme, described capacitor C 4 is electrochemical capacitor.
In such scheme, described backlight driving chip is inductance boost type backlight driving chip.
In such scheme, the model of described backlight driving chip is AW9910.
Compared with prior art, the screen intensity that this utility model is realized root survey instrument by backlight driving chip, power conversion chip and the peripheral circuit set up is adjustable, the pulse control signal sending by single-chip microcomputer, can automatically regulate root to survey the screen intensity of instrument, after user exceedes certain hour and does not use, progressively automatically reduce screen intensity, until screen does not work completely; Survey instrument when reusing root, automatically screen intensity is progressively lightened, until the brightest.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the adjustable root canal length meter of a kind of brightness of display screen.
Detailed description of the invention
The root canal length meter that brightness of display screen is adjustable, it is mainly made up of main frame, root canal file and lip hook.Wherein in main frame, be provided with host circuit, this host circuit comprises battery, single-chip microcomputer, display, power conversion chip, backlight driving chip, capacitor C 1～C4, inductance L 1 and Zener diode D1.The data terminal of display connects the input/output terminal of single-chip microcomputer, and root canal file is connected from the different input/output terminal on single-chip microcomputer respectively with lip hook.After capacitor C 3 and capacitor C 4 are parallel with one another, one terminates on the voltage input end of power conversion chip, and the other end is connected on the earth terminal of power conversion chip.The Enable Pin of backlight driving chip is connected with the input/output terminal of single-chip microcomputer.The voltage input end of backlight driving chip is divided into 2 tunnels, and a road directly connects anode, and another road directly connects battery cathode through capacitor C 1.The switch terminals of backlight driving chip is divided into 2 tunnels after Zener diode D1, and a road directly connects the backlight positive pole of display, and another road is connected with battery cathode through capacitor C 2.The voltage input end of one end backlight driving chip of inductance L 1, the other end connects the switch terminals of backlight driving chip.The digital control end of brightness of backlight driving chip connects the backlight negative pole of display.The earth terminal of the power supply negative terminal of single-chip microcomputer, the earth terminal of power conversion chip and backlight driving chip is connected with battery cathode simultaneously.Referring to Fig. 1.
Backlight driving chip is core component of the present utility model, and its major function is that realization is adjustable to the brightness of display screen of root canal length meter.In this utility model, described backlight driving chip is inductance boost type backlight driving chip.In the preferred embodiment of the present invention, selecting model is the backlight driving chip of AW9910, and this chip adopts ultralow electromagnetic interference, 32 step one line light modulations, and inductance boost type LED drives chip AW9910 to drive root to survey five high-brightness LED lamps in instrument backlight.In addition, in this utility model, described capacitor C 1～C4 all can adopt common electric capacity, but in this utility model preferred embodiment, described capacitor C 1～C3 selects common electric capacity, and 4 of capacitor C are selected electrochemical capacitor.
Claims (4)
1. the adjustable root canal length meter of brightness of display screen, it is mainly made up of main frame, root canal file and lip hook; Wherein in main frame, be provided with host circuit, this host circuit comprises battery, single-chip microcomputer and display; The data terminal of display connects the input/output terminal of single-chip microcomputer, and root canal file is connected from the different input/output terminal on single-chip microcomputer respectively with lip hook; It is characterized in that: described host circuit also further comprises power conversion chip, backlight driving chip capacitor C 1～C4, inductance L 1 and Zener diode D1; The positive pole of battery is connected on the voltage input end of power conversion chip, and the voltage output end of power conversion chip connects the power positive end of single-chip microcomputer; After capacitor C 3 and capacitor C 4 are parallel with one another, one terminates on the voltage input end of power conversion chip, and the other end is connected on the earth terminal of power conversion chip; The Enable Pin of backlight driving chip is connected with the input/output terminal of single-chip microcomputer; The voltage input end of backlight driving chip is divided into 2 tunnels, and a road directly connects anode, and another road directly connects battery cathode through capacitor C 1; The switch terminals of backlight driving chip is divided into 2 tunnels after Zener diode D1, and a road directly connects the backlight positive pole of display, and another road is connected with battery cathode through capacitor C 2; The voltage input end of one end backlight driving chip of inductance L 1, the other end connects the switch terminals of backlight driving chip; The digital control end of brightness of backlight driving chip connects the backlight negative pole of display; The earth terminal of the power supply negative terminal of single-chip microcomputer, the earth terminal of power conversion chip and backlight driving chip is connected with battery cathode simultaneously.
2. the adjustable root canal length meter of brightness of display screen according to claim 1, is characterized in that: described capacitor C 4 is electrochemical capacitor.
3. the adjustable root canal length meter of brightness of display screen according to claim 1 and 2, is characterized in that: described backlight driving chip is inductance boost type backlight driving chip.
4. the adjustable root canal length meter of brightness of display screen according to claim 3, is characterized in that: the model of described backlight driving chip is AW9910.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110980.6U CN203790071U (en) | 2014-03-12 | 2014-03-12 | Root tube length measuring instrument with adjustable display screen brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110980.6U CN203790071U (en) | 2014-03-12 | 2014-03-12 | Root tube length measuring instrument with adjustable display screen brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203790071U true CN203790071U (en) | 2014-08-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420110980.6U Expired - Lifetime CN203790071U (en) | 2014-03-12 | 2014-03-12 | Root tube length measuring instrument with adjustable display screen brightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203790071U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578311A (en) * | 2015-01-26 | 2015-04-29 | 桂林市啄木鸟医疗器械有限公司 | Charging circuit for root canal length measuring instrument and charging state feedback and display method |
| CN110840609A (en) * | 2019-11-11 | 2020-02-28 | 爱马斯克(深圳)科技有限公司 | Electric toothbrush control method and electric toothbrush |
-
2014
- 2014-03-12 CN CN201420110980.6U patent/CN203790071U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578311A (en) * | 2015-01-26 | 2015-04-29 | 桂林市啄木鸟医疗器械有限公司 | Charging circuit for root canal length measuring instrument and charging state feedback and display method |
| CN104578311B (en) * | 2015-01-26 | 2017-02-22 | 桂林市啄木鸟医疗器械有限公司 | Charging circuit for root canal length measuring instrument and charging state feedback and display method |
| CN110840609A (en) * | 2019-11-11 | 2020-02-28 | 爱马斯克(深圳)科技有限公司 | Electric toothbrush control method and electric toothbrush |
| CN110840609B (en) * | 2019-11-11 | 2022-03-01 | 爱马斯克(深圳)科技有限公司 | Electric toothbrush control method and electric toothbrush |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
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| CX01 | Expiry of patent term |