CN209946329U - A electric quantity suggestion device that is used for mutual slide-screen of old person - Google Patents
A electric quantity suggestion device that is used for mutual slide-screen of old person Download PDFInfo
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- CN209946329U CN209946329U CN201920255619.5U CN201920255619U CN209946329U CN 209946329 U CN209946329 U CN 209946329U CN 201920255619 U CN201920255619 U CN 201920255619U CN 209946329 U CN209946329 U CN 209946329U
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Abstract
The utility model discloses an electric quantity suggestion device that is used for mutual sliding screen of old person, include: the power supply battery that sets up in the mutual sliding screen still includes the electric quantity suggestion circuit who connects with power supply battery end lotus root, electric quantity suggestion circuit includes: the circuit comprises an external power supply, a comparator, a first triode, a first resistor, an optocoupler isolator, a second resistor, a second triode, a third resistor, a fourth resistor, a power amplifier and a capacitor; the external reference voltage of homophase input of comparator, the supply battery end is connected to the inverting input of comparator, through this electric quantity prompting circuit, when the supply battery electric quantity in the mutual sliding screen is not enough, in time send buzzing to report to the police, the suggestion old man need charge to mutual sliding screen, and the warning effect is obvious, avoids the old man that memory is not good to forget the antithetical couplet that charges and lead to, guarantees old man's safety, and this circuit structure is simple, and the interference killing feature is strong, and job stabilization is reliable.
Description
Technical Field
The utility model belongs to the technical field of mobile terminal, concretely relates to electric quantity suggestion device that is used for mutual sliding screen of old person.
Background
Interactive sliding screen means an interactive display device that entertainment tool accessible biological feature entertains, and along with the development of science and technology, and the diversification of people's entertainment mode, more and more old person begins to contact interactive device, promotes life enjoyment, and current sliding screen that has interactive has basically to satisfy daily telephone and the SMS function of using, for example, cell-phone etc. owing to convenient to carry, has obtained middle-aged and old user's liking.
Power module in the mutual sliding screen adopts power supply battery to realize the power supply usually, after using for a long time, carry out next use after the power supply battery electric quantity is not enough to need to charge, though instruct power supply battery electric quantity on the screen of current mutual sliding screen, but to the old person, the old person's eyesight descends, difficult observation is clear away, need wear glasses, the troublesome poeration, and when power supply battery electric quantity is not enough, do not have the warning effect, the old person that memory is not good easily forgets in time to charge to mutual sliding screen, the use of mutual sliding screen will be influenced to the light person, seriously will lead to the old person to contact badly, family worry about worries.
SUMMERY OF THE UTILITY MODEL
For overcoming the technical defect that prior art exists, the utility model discloses an electric quantity suggestion device that is used for mutual sliding screen of old person.
The utility model provides a technical scheme that its technical problem adopted is an electric quantity suggestion device that is used for mutual sliding screen of old person, include: the power supply battery that sets up in the mutual sliding screen still includes the electric quantity suggestion circuit who connects with power supply battery end lotus root, electric quantity suggestion circuit includes: the circuit comprises an external power supply, a comparator, a first triode, a first resistor, an optocoupler isolator, a second resistor, a second triode, a third resistor, a fourth resistor, a power amplifier and a capacitor;
the non-inverting input end of the comparator is externally connected with reference voltage, the inverting input end of the comparator is connected with a power supply battery end, the power supply end of the comparator is connected with an external power supply, the grounding end of the comparator is grounded, the output end of the comparator is connected with the base electrode of a first triode, the emitting electrode of the first triode is grounded, the collecting electrode of the first triode is connected with the external power supply through a first resistor, the collecting electrode of the first triode is connected with the anode of a light emitting diode in an optical coupler isolator, the collecting electrode of a light emitting diode in the optical coupler isolator is connected with the external power supply through a second resistor, the cathode of the light emitting diode in the optical coupler isolator is grounded with the emitting electrode of a photosensitive triode, the collecting electrode of the photosensitive triode is also connected with the base electrode of a second triode, the emitting electrode of the second triode is grounded, the, the other end of the power amplifier is grounded, an emitting electrode of a third triode is connected with an external power supply through a fourth resistor, a third resistor is connected between a base electrode of the second triode and an emitting electrode of the third triode, and a capacitor is connected between the emitting electrode and a collecting electrode of the third triode.
Preferably, the non-inverting input terminal of the comparator is further grounded through a zener diode, the non-inverting input terminal of the comparator is connected to the cathode of the zener diode, and the anode of the zener diode is grounded.
Preferably, the comparator adopts a chip model number LM 393.
Preferably, the chip model of the optical coupler isolator is 6N 317.
Preferably, the electric quantity prompting circuit further comprises a light emitting diode, the collector of the third triode is further connected with the anode of the light emitting diode, and the cathode of the light emitting diode is grounded.
The utility model has the advantages that: through this electric quantity suggestion circuit, when power supply battery electric quantity was not enough in the mutual sliding screen, in time send buzzing warning, the suggestion old man needs to charge to mutual sliding screen, and the warning effect is obvious, avoids the old man that memory is not good to forget the mistake that charges and lead to allies oneself with, guarantees old man's safety, and this circuit structure is simple, and the interference killing feature is strong, and job stabilization is reliable.
Drawings
Fig. 1 is a schematic circuit diagram of the electric quantity prompting circuit of the present invention.
Reference numerals: u0-reference voltage, DW-voltage stabilizing diode, U1-comparator, VIN-power supply battery terminal, T1-first triode, R1-first resistor, OC-optical coupling isolator, R2-second resistor, T2-second triode, T3-third triode, R3-third resistor, R4-fourth resistor, BP-power amplifier, C1-capacitor and LED-light emitting diode.
Detailed Description
The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments after studying the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
An electric quantity prompting device for an elderly interactive screen sliding comprises: the power supply battery that sets up in the mutual sliding screen still includes the electric quantity suggestion circuit with power supply battery end VIN coupling, electric quantity suggestion circuit includes: the circuit comprises an external power supply VCC, a comparator U1, a first triode T1, a first resistor R1, an optical coupling isolator OC, a second resistor R2, a second triode T2, a third triode T3, a third resistor R3, a fourth resistor R4, a power amplifier BP and a capacitor C1;
the non-inverting input end of the comparator U1 is externally connected with a reference voltage U0, the inverting input end of the comparator U1 is connected with a power supply battery end VIN, the power supply end of the comparator U1 is connected with an external power supply VCC, the grounding end of the comparator U1 is grounded, the output end of the comparator U1 is connected with the base electrode of the first triode T1, the emitter electrode of the first triode T1 is grounded, the collector electrode of the first triode T1 is connected with an external power supply VCC through a first resistor R1, the collector electrode of the first triode T1 is connected with the anode electrode of the light emitting diode in the optocoupler isolator OC, the collector electrode of the phototriode in the optocoupler isolator OC is connected with the external power supply VCC through a second resistor R2, the cathode electrode of the light emitting diode in the optocoupler isolator OC is grounded with the emitter electrode of the phototriode, the collector electrode of the phototriode is also connected with the base electrode of the second triode T2, the emitter electrode of, a collector of the third triode T3 is connected with one end of a power amplifier BP, the other end of the power amplifier BP is grounded, an emitter of the third triode T3 is connected with an external power supply VCC through a fourth resistor R4, a third resistor R3 is connected between a base of the second triode T2 and an emitter of the third triode T3, and a capacitor C1 is connected between the emitter and the collector of the third triode T3;
specifically, the power supply battery is a power supply part in a power supply module in the interactive sliding screen, the power supply battery usually adopts a lithium battery, a VIN end of the power supply battery is used for collecting voltage of the power supply battery, the VIN end of the power supply battery is a positive electrode of the power supply battery, an inverting input end of the comparator U1 receives the voltage of the power supply battery and then compares the voltage with a reference voltage U0 of a non-inverting input end, and the reference voltage U0 is a voltage threshold corresponding to the lowest electric quantity of the power supply battery;
if the power supply battery is detected to be lower than the lowest power, the reference voltage value U0 of the comparator U1 is larger than the voltage value of the VIN of the power supply battery, the value of the non-inverting input end of the comparator U1 is larger than the value of the inverting input end, the comparator U1 outputs a high level signal, the first triode T1 receives the high level signal to be conducted, the first triode T1 is conducted and grounded, the anode of the light emitting diode in the optocoupler isolator OC receives the low level signal to be cut off and not emit light, the phototriode in the optocoupler isolator OC is cut off, the base of the second triode T2 receives the high voltage signal of the external power supply through the second resistor R2, the second triode T2 is conducted, the power amplifier BP is conducted to emit buzz to prompt that the power supply battery is insufficient due to the conducting and grounding of the second triode T2, the base of the third triode T3 receives the low level signal to be conducted, and the power amplifier, The third triode T3, the third resistor R3 and the capacitor C1 form an audio oscillation circuit, and the third resistor R3 and the capacitor C1 are used for adjusting oscillation frequency; the first resistor R1, the second resistor R2 and the fourth resistor R4 are current-limiting resistors; the optical coupling isolator OC can also reduce the interference of electric connection and improve the anti-interference capability of the electric quantity prompting circuit;
through this electric quantity suggestion circuit, when the power supply battery electric quantity was not enough in the mutual sliding screen, in time send buzzing warning, the suggestion old man needs to charge to mutual sliding screen, and the warning effect is obvious, avoids the old man that memory is not good to forget the antithetical couplet that charges and lead to, and especially solitary old man guarantees old man's safety, and this circuit structure is simple, and the interference killing feature is strong, and job stabilization is reliable.
The non-inverting input end of the comparator U1 is also grounded through a voltage stabilizing diode DW, the non-inverting input end of the comparator U1 is connected with the cathode of the voltage stabilizing diode DW, and the anode of the voltage stabilizing diode DW is grounded; the voltage stabilizing diode DW is used for protecting the comparator U1, when the voltage is overlarge, the high voltage breaks through the voltage stabilizing diode DW and is grounded, the non-inverting input end of the comparator U1 is prevented from being damaged by the high voltage, and the service life of the comparator U1 is prolonged.
The model of the chip adopted by the comparator U1 is LM 393; the comparator of LM393 is wide in working power supply voltage range, small in consumed current, small in input offset voltage and wide in common mode input voltage range.
The type of a chip adopted by the optical coupling isolator OC is 6N 317; 6N317 is high-speed optical coupling isolator, has temperature, electric current and voltage compensation function, and high input/output is kept apart, and the consumption is little.
The electric quantity prompting circuit further comprises a Light Emitting Diode (LED), the collector electrode of the third triode T3 is also connected with the anode of the LED, and the cathode of the LED is grounded; when the third triode T3 switches on, the light emitting diode LED is connected with an external power supply VCC through the branch of the third triode T3 and the fourth resistor R4, the light emitting diode LED is electrified to emit light, the light emitting diode LED and a power amplifier BP jointly indicate that the electric quantity is insufficient, the warning degree is improved, and the observation is obvious.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.
Claims (5)
1. The utility model provides an electric quantity suggestion device that is used for mutual slide-screen of old person which characterized in that: the method comprises the following steps: the power supply battery that sets up in the mutual sliding screen still includes the electric quantity suggestion circuit who connects with power supply battery end lotus root, electric quantity suggestion circuit includes: the circuit comprises an external power supply, a comparator, a first triode, a first resistor, an optocoupler isolator, a second resistor, a second triode, a third resistor, a fourth resistor, a power amplifier and a capacitor;
the non-inverting input end of the comparator is externally connected with reference voltage, the inverting input end of the comparator is connected with a power supply battery end, the power supply end of the comparator is connected with an external power supply, the grounding end of the comparator is grounded, the output end of the comparator is connected with the base electrode of a first triode, the emitting electrode of the first triode is grounded, the collecting electrode of the first triode is connected with the external power supply through a first resistor, the collecting electrode of the first triode is connected with the anode of a light emitting diode in an optical coupler isolator, the collecting electrode of a light emitting diode in the optical coupler isolator is connected with the external power supply through a second resistor, the cathode of the light emitting diode in the optical coupler isolator is grounded with the emitting electrode of a photosensitive triode, the collecting electrode of the photosensitive triode is also connected with the base electrode of a second triode, the emitting electrode of the second triode is grounded, the, the other end of the power amplifier is grounded, an emitting electrode of a third triode is connected with an external power supply through a fourth resistor, a third resistor is connected between a base electrode of the second triode and an emitting electrode of the third triode, and a capacitor is connected between the emitting electrode and a collecting electrode of the third triode.
2. The electric quantity prompting device for the interactive screen sliding of the old as claimed in claim 1, characterized in that: the non-inverting input end of the comparator is grounded through a voltage stabilizing diode, the non-inverting input end of the comparator is connected with the cathode of the voltage stabilizing diode, and the anode of the voltage stabilizing diode is grounded.
3. The electric quantity prompting device for the interactive screen sliding of the old as claimed in claim 2, characterized in that: the model of the chip adopted by the comparator is LM 393.
4. The electric quantity prompting device for the interactive screen sliding of the old as claimed in claim 1, characterized in that: the chip model that the optical coupling isolator adopted is 6N 317.
5. The electric quantity prompting device for the interactive screen sliding of the old as claimed in claim 1, characterized in that: the electric quantity prompting circuit further comprises a light emitting diode, a collector electrode of the third triode is further connected with an anode of the light emitting diode, and a cathode of the light emitting diode is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920255619.5U CN209946329U (en) | 2019-02-28 | 2019-02-28 | A electric quantity suggestion device that is used for mutual slide-screen of old person |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920255619.5U CN209946329U (en) | 2019-02-28 | 2019-02-28 | A electric quantity suggestion device that is used for mutual slide-screen of old person |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209946329U true CN209946329U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920255619.5U Expired - Fee Related CN209946329U (en) | 2019-02-28 | 2019-02-28 | A electric quantity suggestion device that is used for mutual slide-screen of old person |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209946329U (en) |
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2019
- 2019-02-28 CN CN201920255619.5U patent/CN209946329U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 |