CN207782453U - A kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device - Google Patents
A kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device Download PDFInfo
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- CN207782453U CN207782453U CN201820206900.5U CN201820206900U CN207782453U CN 207782453 U CN207782453 U CN 207782453U CN 201820206900 U CN201820206900 U CN 201820206900U CN 207782453 U CN207782453 U CN 207782453U
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- power supply
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- low battery
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Abstract
The utility model discloses a kind of LED automobile first aid Power supply belt low battery automatic sound suggestion devices, including：Detection unit, the electricity for detecting battery；Control unit, the electric quantity signal detected for receiving the detection unit, and the electric quantity signal output pulse signal in response to detecting are to drive auditory tone cues unit；Auditory tone cues unit sends out voice prompt in response to the pulse signal.The utility model is used for automobile first-aid Power supply belt low battery automatic prompt, after LED automobile first aid power supply auditory tone cues low battery, user is reminded to charge in time to machine, machine internal cell can be caused to be damaged because of overdischarge to avoid charging is forgotten.
Description
Technical field
The utility model belongs to vehicle electric field, and in particular to a kind of LED automobile first aid Power supply belt low battery automatic sound
Sound suggestion device.
Background technology
Existing LED automobile first aid power supply low capacity prompt function is to use LED light on the market, is needed by power key
Or activation electricity shows that, if low battery, LED light will flicker after being inserted into USB device, realizes low capacity prompt function.This
Kind mode of operation needs artificial participation, cannot accomplish to remind in time.
Utility model content
The purpose of this utility model is to propose a kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device, with
It solves the problems, such as to accomplish to remind in time in the prior art.
The purpose of this utility model is achieved through the following technical solutions：A kind of low electricity of LED automobile first aid Power supply belt
Automatic sound suggestion device is measured, including power supply mainboard, the power supply mainboard include：
Detection unit, the electricity for detecting battery；
Control unit, the electric quantity signal detected for receiving the detection unit, and the electricity in response to detecting
Signal output pulse signal is measured to drive auditory tone cues unit；
Auditory tone cues unit sends out voice prompt in response to the pulse signal.
Preferably, described control unit is a monolithic with battery detecting voltage input end and pulse signal output end
Machine.
Preferably, the detection unit includes：
Partial pressure unit carries out voltage division processing for the output voltage to the battery；
Filter unit, the voltage for being exported to the partial pressure unit are filtered.
Preferably, the partial pressure unit includes the resistance R9 being connected in series with and resistance R10, the resistance R9 and resistance R10
Connection forms the first electrical node, the anode of the resistance R9 connections battery；The filter unit includes resistance R11 and capacitance
C7；One end of the resistance R11 is connect with the first electrical node, and the other end is connected to the battery detecting control source of microcontroller
End, while the other end of the resistance R11 is grounded through the capacitance C7.
Preferably, auditory tone cues unit includes resistance R35, capacitance C23, triode Q6 and a buzzer；The resistance R35
One end be connected to the pulse signal output end of microcontroller, the other end is connected to the base stage of triode Q6, the triode Q6's
Emitter is grounded, and collector is connected to one end of buzzer, and another termination power vd D of buzzer, the capacitance C23 are parallel to
The both ends of buzzer.
By adopting the above-described technical solution, the utility model has the following advantages：
The utility model is used for automobile first-aid Power supply belt low battery automatic prompt, when LED automobile first aid power supply auditory tone cues
After low battery, user is reminded to charge in time to machine, machine internal cell can be caused to be damaged because of overdischarge to avoid charging is forgotten
It is bad.
Other advantages, target and feature of the utility model will be explained in the following description to a certain extent
It states, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or
Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following
Bright book is realized and is obtained.
Description of the drawings
The description of the drawings of the utility model is as follows.
Fig. 1 is the block diagram of the utility model；
Fig. 2 is the schematic diagram of detection unit in the utility model；
Fig. 3 is control unit and auditory tone cues unit schematic diagram in the utility model.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device, including power supply mainboard, institute
Stating power supply mainboard includes：
Detection unit, the electricity for detecting battery；
Control unit, the electric quantity signal detected for receiving the detection unit, and the electricity in response to detecting
Signal output pulse signal is measured to drive auditory tone cues unit；
Auditory tone cues unit sends out voice prompt in response to the pulse signal.
In this present embodiment, it could be provided as, when LED automobile first aid electric quantity of power supply is less than 10V, (normal working voltage is
10V-12.6V), control unit is determined as low battery, and just to buzzer drive circuit, buzzer is sent out continuously output pulse signal
The sound of 5 times ' ticking ' prompts machine to enter low battery state at this time.If without charging in time, suggestion device can be after
Half an hour prompt is primary.
Preferably, described control unit is a monolithic with battery detecting voltage input end and pulse signal output end
Machine.The model of microcontroller is SN8P2734S.
Preferably, the detection unit includes：
Partial pressure unit carries out voltage division processing for the output voltage to the battery；
Filter unit, the voltage for being exported to the partial pressure unit are filtered.
Preferably, as shown in Fig. 2, the partial pressure unit includes the resistance R9 being connected in series with and resistance R10, the resistance R9
It connect to form the first electrical node with resistance R10, the anode of the resistance R9 connections battery；The filter unit includes resistance
R11 and capacitance C7；One end of the resistance R11 is connect with the first electrical node, and the other end is connected to the battery detecting of microcontroller
Voltage input end, while the other end of the resistance R11 is grounded through the capacitance C7.
BT+ connects the positive and negative of lithium battery in Fig. 2, and cell voltage passes through R9, after the bleeder circuit partial pressure that R10 is formed, is divided into
The voltage (because the maximum input voltage of microcontroller is 5.6V) of 3V or so, then by R11, after the RC filter circuits filtering of C7 compositions
Battery detecting voltage is exported from the ends BTV.
In this present embodiment, as shown in figure 3, auditory tone cues unit includes resistance R35, capacitance C23, triode Q6 and a bee
Ring device；One end of the resistance R35 is connected to the pulse signal output end of microcontroller, and the other end is connected to the base of triode Q6
Pole, the emitter ground connection of the triode Q6, collector are connected to one end of buzzer, another termination power vd D of buzzer,
The capacitance C23 is parallel to the both ends of buzzer.Specifically, when LED automobile first aid electric quantity of power supply is less than 10V, microcontroller is defeated
Going out pulse makes triode Q6 be connected, at this point, buzzer is started to work, when LED automobile first aid electric quantity of power supply is higher than 10V, monolithic
Machine will not export pulse, and triode Q6 cut-offs, then buzzer is stopped.
In this present embodiment, the resistance R35 plays the role of current limliting, prevents electric current in circuit excessive, plays protection
The purpose of circuit.In order to make voltage more stablize, in this present embodiment, it is electric over the ground that the base stage of the triode Q6 can connect one
Hold.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this
The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and range of the technical program
Cover in the scope of protection of the utility model.
Claims (5)
1. a kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device, which is characterized in that including power supply mainboard, institute
Stating power supply mainboard includes：
Detection unit, the electricity for detecting battery；
Control unit, the electric quantity signal detected for receiving the detection unit, and the electricity in response to detecting are believed
Number output pulse signal is to drive auditory tone cues unit；
Auditory tone cues unit sends out voice prompt in response to the pulse signal.
2. a kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device according to claim 1, feature exist
In described control unit is a microcontroller with battery detecting voltage input end and pulse signal output end.
3. a kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device according to claim 2, feature exist
In the detection unit includes：
Partial pressure unit carries out voltage division processing for the output voltage to the battery；
Filter unit, the voltage for being exported to the partial pressure unit are filtered.
4. a kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device according to claim 3, feature exist
Include the resistance R9 being connected in series with and resistance R10 in, the partial pressure unit, the resistance R9 connect to form first with resistance R10
Electrical node, the anode of the resistance R9 connections battery；The filter unit includes resistance R11 and capacitance C7；The resistance R11
One end connect with the first electrical node, the other end is connected to the battery detecting voltage input end of microcontroller, while the resistance
The other end of R11 is grounded through the capacitance C7.
5. a kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device according to claim 4, feature exist
In auditory tone cues unit includes resistance R35, capacitance C23, triode Q6 and a buzzer；One end of the resistance R35 is connected to
The pulse signal output end of microcontroller, the other end are connected to the base stage of triode Q6, the emitter ground connection of the triode Q6, collection
Electrode is connected to one end of buzzer, and another termination power vd D of buzzer, the capacitance C23 are parallel to the both ends of buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820206900.5U CN207782453U (en) | 2018-02-06 | 2018-02-06 | A kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820206900.5U CN207782453U (en) | 2018-02-06 | 2018-02-06 | A kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207782453U true CN207782453U (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820206900.5U Active CN207782453U (en) | 2018-02-06 | 2018-02-06 | A kind of LED automobile first aid Power supply belt low battery automatic sound suggestion device |
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| CN (1) | CN207782453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114281291A (en) * | 2021-12-28 | 2022-04-05 | 海信视像科技股份有限公司 | Display device, control device and low-power prompting method of control device |
-
2018
- 2018-02-06 CN CN201820206900.5U patent/CN207782453U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114281291A (en) * | 2021-12-28 | 2022-04-05 | 海信视像科技股份有限公司 | Display device, control device and low-power prompting method of control device |
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