CN102255288A - Pair of 3D (3-dimensional) glasses and charging protector thereof - Google Patents
Pair of 3D (3-dimensional) glasses and charging protector thereof Download PDFInfo
- Publication number
- CN102255288A CN102255288A CN2011101769169A CN201110176916A CN102255288A CN 102255288 A CN102255288 A CN 102255288A CN 2011101769169 A CN2011101769169 A CN 2011101769169A CN 201110176916 A CN201110176916 A CN 201110176916A CN 102255288 A CN102255288 A CN 102255288A
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- triode
- charging
- electronic switch
- charging circuit
- mcu
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- 239000011521 glass Substances 0.000 title claims abstract description 45
- 230000001012 protector Effects 0.000 title abstract 2
- 239000004065 semiconductor Substances 0.000 claims description 23
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
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Abstract
The invention relates to a pair of 3D (3-dimensional) glasses and a charging protector thereof. The charging device comprises a MCU (micro control unit), a charging circuit, a control circuit and an electronic switch which is connected between the MCU and the charging circuit and used for switching on and off an input power supply of the MCU; an input end of the control circuit is connected with a power input end of the charging circuit, and an output end of the control circuit is connected with the electronic switch; the control circuit is used for detecting charging voltage signals of the charging circuit and switching on and off the electronic switch in accordance with the charging voltage signals. In the charging device, the control circuit is used for detecting whether the charging circuit has the charging voltage signals so as to switch on and off the electronic switch, thus the electronic switch controls the switch-on/off of the input power supply of the MCU; when a battery is charged, the electronic switch is controlled to be switched off to break the load of the MCU, thus the battery is charged normally, thereby avoiding error judgment of charging detection and preventing fire hazard or explosion hazard caused by charging the pair of 3D glasses in use as well as improving the use safety of the pair of 3D glasses.
Description
Technical field
The present invention relates to 3D (three-dimensional, 3-D graphic) optometric technology field, relate in particular to 3D glasses charge protection device and 3D glasses on a kind of 3D of being applied in display.
Background technology
Along with developing rapidly and the raising of people's consumption demand of image display technologies such as TV, image display technologies such as TV progressively develop to 3D from 2D (two dimension).
At present, in order to watch 3D rendering, it is to be displays such as 3D TV configuration liquid crystal electron light valve glasses that a kind of comparatively ripe mode is arranged, these liquid crystal electron light valve glasses are provided with a synchronized transmissions and receiving system, TV is according to the image of certain rules demonstration left eye and right eye, and the receiving system of glasses receives the corresponding synchronous signal, controls the liquid crystal light valve of right and left eyes respectively, make right and left eyes see corresponding image respectively, at last the image of compound stereoscopic in people's brain.
Above-mentioned liquid crystal electron light valve glasses need the outside to provide power supply for it, at present, take the supply power mode of button cell usually.But the power-on time of button cell is short, but also needs the frequent battery of changing, cost height not only, and be unfavorable for environmental protection.
The employing lithium battery is also arranged in the prior art, by USB (Universal Serial BUS, USB) interface is connected with external power source, lithium battery is charged, though solved the problem of frequent replacing battery, but, because MCU (the Micro Control Unit in lithium battery and the glasses, micro-control unit, claim single-chip microcomputer again) parallel connection, and MCU needs power consumption as load, the electric current of its generation is when lithium cell charging, it is disconnected to make charging circuit that erroneous judgement takes place, and can't finish the detection that charging finishes; In addition, after lithium battery discharge prevention action, charging circuit provides power supply for MCU, and this moment, the output voltage of charging circuit can be pulled down to 1.28V, makes the MCU cisco unity malfunction, and the charging process of lithium battery also can't be carried out; In addition, existing 3D glasses are not taked effective safeguard measure to the charging circuit of lithium battery, and the 3D glasses in use charge, and have the danger that lithium battery is on fire or explode.
Summary of the invention
Main purpose of the present invention is to provide a kind of 3D glasses charge protection device and 3D glasses, is intended to improve the fail safe and work validity of 3D glasses charging circuit.
In order to achieve the above object, the present invention proposes a kind of 3D glasses charge protection device, comprises MCU, charging circuit, electronic switch and control circuit, wherein:
Described electronic switch is connected between the power output end of described MCU and charging circuit, is used to control the conducting and the shutoff of the input power supply of MCU;
The input of described control circuit is connected with the power input of described charging circuit, the output of this control circuit is connected with described electronic switch, be used to detect the charging voltage signal of charging circuit, according to the open and close of described charging voltage signal controlling electronic switch.
Preferably, described electronic switch is a metal-oxide-semiconductor; Described control circuit comprises first triode and second triode, and the base stage of first triode is connected with the power input of charging circuit, grounded emitter, and collector electrode is connected with the base stage of second triode; The collector electrode of described second triode and emitter are connected with the grid and the source electrode of metal-oxide-semiconductor respectively, the collector electrode of second triode is ground connection simultaneously, when charging circuit charges, and the collector electrode of second triode and emitter conducting, with the source electrode and the gate short of described metal-oxide-semiconductor, turn-off metal-oxide-semiconductor; When charging circuit discharges, the collector electrode of second triode and not conducting of emitter, the metal-oxide-semiconductor conducting is for MCU provides power supply.
Preferably, be in series with first resistance between the power input of described first triode and described charging circuit.
Preferably, the collector electrode of described second triode is by second grounding through resistance.
Preferably, be in series with the 3rd resistance between the base stage of the collector electrode of described first triode and second triode.
Preferably, described metal-oxide-semiconductor is a P type metal-oxide-semiconductor.
Preferably, described first triode is a NPN type triode; Described second triode is the positive-negative-positive triode.
Preferably, described charging circuit is the MP2603 integrated circuit.
The present invention also proposes a kind of 3D glasses, comprises charge protection device, and this charge protection device comprises MCU, charging circuit, electronic switch and control circuit, wherein:
Described electronic switch is connected between the power output end of described MCU and charging circuit, is used to control the conducting and the shutoff of the input power supply of MCU;
The input of described control circuit is connected with the power input of described charging circuit, the output of this control circuit is connected with described electronic switch, be used to detect the charging voltage signal of charging circuit, according to the open and close of described charging voltage signal controlling electronic switch.
Preferably, described charge protection device is aforesaid 3D glasses charge protection device.
A kind of 3D glasses charge protection device and 3D glasses that the present invention proposes; detect charging circuit by control circuit whether the charging voltage signal is arranged; control the open and close of electronic switch; and then the conducting and the shutoff of the input power supply by electronic switch control MCU; when battery charge; control circuit cuts out electronic switch; thereby disconnect the MCU load of 3D glasses; battery is charged normal; it is disconnected to avoid charging to detect erroneous judgement; improved the work validity of battery charger, there is danger on fire or blast in charging when having avoided the 3D glasses normally to use simultaneously, has improved the safety in utilization of 3D glasses.
Description of drawings
Fig. 1 is the electrical block diagram of 3D glasses charge protection device one embodiment of the present invention.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Whether solution for embodiment of the invention: detecting charging circuit by control circuit has the charging voltage signal if mainly being, control the open and close of electronic switch, and then the conducting and the shutoff of the input power supply by electronic switch control MCU, when battery charge, control circuit cuts out electronic switch, disconnect the MCU load of 3D glasses, battery is charged normal, it is disconnected to avoid charging to detect erroneous judgement, there is danger on fire or blast in charging when avoiding the 3D glasses normally to use simultaneously, to improve the safety in utilization of 3D glasses.
As shown in Figure 1, Fig. 1 is the electrical block diagram of 3D glasses charge protection device one embodiment of the present invention, and one embodiment of the invention proposes a kind of 3D glasses charge protection device, comprises MCU, charging circuit, electronic switch and control circuit, wherein:
Charging circuit is the charging circuit of rechargeable batteries such as lithium battery, and it is connected with external power source by USB interface;
Electronic switch is connected between the power output end of MCU and charging circuit, is used to control the conducting and the shutoff of the input power supply of MCU;
The input of control circuit is connected with the power input of charging circuit, and the output of this control circuit is connected with electronic switch, is used to detect the charging voltage signal of charging circuit, according to the open and close of charging voltage signal controlling electronic switch.When control circuit detected charging circuit the charging voltage signal is arranged, the control electronic switch cut out, and when control circuit detected charging circuit and do not have the charging voltage signal, the control electronic switch was opened.
Particularly, in the present embodiment, electronic switch is P type metal-oxide-semiconductor (MOSFET, Metal OxideSemiconductor Field Effect Transistor, the MOS type field effect transistor) Q1, charging circuit are the MP2603 integrated circuit, are connected with external power source by USB interface; Control circuit comprises the first triode Q2 and the second triode Q3, and the first triode Q2 is a NPN type triode; The second triode Q3 is the positive-negative-positive triode.The base stage B of the first triode Q2 is connected with the power input of charging circuit, the emitter E ground connection of the first triode Q2, and the collector electrode C of the first triode Q2 is connected with the base stage B of the second triode Q3; The collector electrode C of the second triode Q3 and emitter E are connected with grid G and the source S of metal-oxide-semiconductor Q1 respectively, the collector electrode C of the second triode Q3 is ground connection simultaneously, when charging circuit charges, the collector electrode C of the second triode Q3 and emitter E conducting, with source S and the grid G short circuit of metal-oxide-semiconductor Q1, turn-off metal-oxide-semiconductor Q1; When charging circuit discharges, the collector electrode C of the second triode Q3 and not conducting of emitter E, metal-oxide-semiconductor Q1 conducting is for MCU provides power supply.
Because when charging, the second triode Q3 has ended the work of MCU with source S and the grid G short circuit of metal-oxide-semiconductor Q1, avoided when charging MCU also the operate as normal erroneous judgement that causes charging circuit to detect break, improved the work validity of battery charger; When battery charge, guarantee that the 3D glasses are in off position simultaneously, avoiding charging when the 3D glasses normally use in the prior art exists danger on fire or blast, has improved the safety in utilization of 3D glasses.
Further, be in series with first resistance R 1 that is used for dividing potential drop in the present embodiment between the power input of the first triode Q2 and charging circuit.The Q3 collector electrode C of second triode is by second resistance R, 2 ground connection.Be in series with the 3rd resistance R 3 of dividing potential drop between the collector electrode C of the first triode Q2 and the base stage B of the second triode Q3.
The operation principle of present embodiment charge protection device is:
Whether the first triode Q2 detects charging circuit MP2603 in real time charge power supply, when battery charge, the first triode Q2 has detected charging voltage and conducting, second triode Q3 conducting because of the conducting of the first triode Q2, after the second triode Q3 conducting, the collector electrode C of the second triode Q3 and emitter E are with source S and the grid G short circuit of metal-oxide-semiconductor Q1, thereby ended the work of MCU, avoided when charging MCU also the operate as normal erroneous judgement that causes charging circuit to detect is disconnected, simultaneously when battery charge, guarantee that the 3D glasses are in off position, avoiding charging when the 3D glasses normally use in the prior art exists danger on fire or blast, has improved the safety in utilization of 3D glasses.
When battery does not charge, the first triode Q2 and second all not conductings of triode Q3, second resistance R 2 conductings of metal-oxide-semiconductor Q1 by setovering, the charging circuit of battery and MCU UNICOM, for MCU provides power supply, at this moment, glasses promptly can operate as normal.
And the metal-oxide-semiconductor that adopts in the present embodiment, when not working, MCU can not bring extra power consumption yet.
The present invention also proposes a kind of 3D glasses, comprises charge protection device, and this charge protection device comprises MCU, charging circuit, electronic switch and control circuit, wherein:
Electronic switch is connected between the power output end of MCU and charging circuit, is used to control the conducting and the shutoff of the input power supply of MCU;
The input of control circuit is connected with the power input of charging circuit, and the output of this control circuit is connected with electronic switch, is used to detect the charging voltage signal of charging circuit, according to the open and close of charging voltage signal controlling electronic switch.
Charge protection device in the present embodiment can not be described further at this for the described 3D glasses of the foregoing description charge protection device.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. a 3D glasses charge protection device comprises MCU and charging circuit, it is characterized in that, also comprises electronic switch and control circuit, wherein:
Described electronic switch is connected between the power output end of described MCU and charging circuit, is used to control the conducting and the shutoff of the input power supply of MCU;
The input of described control circuit is connected with the power input of described charging circuit, the output of this control circuit is connected with described electronic switch, be used to detect the charging voltage signal of charging circuit, according to the open and close of described charging voltage signal controlling electronic switch.
2. device according to claim 1 is characterized in that, described electronic switch is a metal-oxide-semiconductor; Described control circuit comprises first triode and second triode, and the base stage of first triode is connected with the power input of charging circuit, grounded emitter, and collector electrode is connected with the base stage of second triode; The collector electrode of described second triode and emitter are connected with the grid and the source electrode of metal-oxide-semiconductor respectively, the collector electrode of second triode is ground connection simultaneously, when charging circuit charges, and the collector electrode of second triode and emitter conducting, with the source electrode and the gate short of described metal-oxide-semiconductor, turn-off metal-oxide-semiconductor; When charging circuit discharges, the collector electrode of second triode and not conducting of emitter, the metal-oxide-semiconductor conducting is for MCU provides power supply.
3. device according to claim 2 is characterized in that, is in series with first resistance between the power input of described first triode and described charging circuit.
4. device according to claim 2 is characterized in that, the collector electrode of described second triode is by second grounding through resistance.
5. device according to claim 2 is characterized in that, is in series with the 3rd resistance between the base stage of the collector electrode of described first triode and second triode.
6. according to each described device among the claim 2-5, it is characterized in that described metal-oxide-semiconductor is a P type metal-oxide-semiconductor.
7. device according to claim 6 is characterized in that, described first triode is a NPN type triode; Described second triode is the positive-negative-positive triode.
8. device according to claim 7 is characterized in that, described charging circuit is the MP2603 integrated circuit.
9. 3D glasses is characterized in that, comprise charge protection device, and this charge protection device comprises MCU, charging circuit, electronic switch and control circuit, wherein:
Described electronic switch is connected between the power output end of described MCU and charging circuit, is used to control the conducting and the shutoff of the input power supply of MCU;
The input of described control circuit is connected with the power input of described charging circuit, the output of this control circuit is connected with described electronic switch, be used to detect the charging voltage signal of charging circuit, according to the open and close of described charging voltage signal controlling electronic switch.
10. 3D glasses according to claim 9 is characterized in that, described charge protection device is each described 3D glasses charge protection device among the claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110176916.9A CN102255288B (en) | 2011-06-28 | 2011-06-28 | Pair of 3D (3-dimensional) glasses and charging protector thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110176916.9A CN102255288B (en) | 2011-06-28 | 2011-06-28 | Pair of 3D (3-dimensional) glasses and charging protector thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102255288A true CN102255288A (en) | 2011-11-23 |
| CN102255288B CN102255288B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110176916.9A Expired - Fee Related CN102255288B (en) | 2011-06-28 | 2011-06-28 | Pair of 3D (3-dimensional) glasses and charging protector thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305522A (en) * | 2014-07-31 | 2016-02-03 | 浙江亿思达显示科技有限公司 | Charging-type 3D glasses capable of performing automatic charging |
| CN106451341A (en) * | 2016-11-22 | 2017-02-22 | 亿嘉和科技股份有限公司 | Load overcurrent protection circuit and load overcurrent protection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1881734A (en) * | 2005-06-13 | 2006-12-20 | 华为技术有限公司 | Terminal circuit and its charge controlling method |
| CN201813422U (en) * | 2010-09-09 | 2011-04-27 | Tcl集团股份有限公司 | Charging chip and mobile terminal capable of automatically adjusting charging mode |
| CN102073141A (en) * | 2010-11-30 | 2011-05-25 | 康佳集团股份有限公司 | 3D glasses capable of being charged automatically |
-
2011
- 2011-06-28 CN CN201110176916.9A patent/CN102255288B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1881734A (en) * | 2005-06-13 | 2006-12-20 | 华为技术有限公司 | Terminal circuit and its charge controlling method |
| CN201813422U (en) * | 2010-09-09 | 2011-04-27 | Tcl集团股份有限公司 | Charging chip and mobile terminal capable of automatically adjusting charging mode |
| CN102073141A (en) * | 2010-11-30 | 2011-05-25 | 康佳集团股份有限公司 | 3D glasses capable of being charged automatically |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305522A (en) * | 2014-07-31 | 2016-02-03 | 浙江亿思达显示科技有限公司 | Charging-type 3D glasses capable of performing automatic charging |
| CN106451341A (en) * | 2016-11-22 | 2017-02-22 | 亿嘉和科技股份有限公司 | Load overcurrent protection circuit and load overcurrent protection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102255288B (en) | 2014-11-26 |
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Granted publication date: 20141126 |