CN207148217U - A kind of electric quantity display circuit - Google Patents
A kind of electric quantity display circuit Download PDFInfo
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- CN207148217U CN207148217U CN201720841990.0U CN201720841990U CN207148217U CN 207148217 U CN207148217 U CN 207148217U CN 201720841990 U CN201720841990 U CN 201720841990U CN 207148217 U CN207148217 U CN 207148217U
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Abstract
The utility model discloses a kind of electric quantity display circuit, including PCB, PCB is provided with single-chip microcomputer, AD conversion module, sampling module, voltage doubling rectifier module and LED charactrons, sampling module connects single-chip microcomputer by AD conversion module, single-chip microcomputer connects voltage doubling rectifier module and LED charactrons respectively, and the utility model structural principle is simple, strong antijamming capability, the stability and precision of voltage acquisition are higher, it is possible to increase electricity display quality.
Description
Technical field
Electricity display technology field is the utility model is related to, specially a kind of electric quantity display circuit.
Background technology
For the electrical equipment (such as electric drill, high-grade bike lighting system) of some non intelligentization management, itself does not possess
Battery electric quantity metering and electricity display portion.And for terminal user, understanding battery electric quantity state in time is very important,
Can so people be reminded to charge the battery in time, in order to avoid instrument cisco unity malfunction used in being influenceed because of battery short of electricity.
So engineers and technicians are a kind of electric quantity display circuit structure in real time of the battery product design controlled oneself, the product to control oneself increases
Add the function of hommization, the market competitiveness for lifting product is very significant.
Utility model content
The purpose of this utility model is to provide a kind of electric quantity display circuit, asked with solve to propose in above-mentioned background technology
Topic.
To achieve the above object, the utility model provides following technical scheme：A kind of electric quantity display circuit, including PCB electricity
Road plate, the PCB are provided with single-chip microcomputer, AD conversion module, sampling module, voltage doubling rectifier module and LED charactrons,
The sampling module connects single-chip microcomputer by AD conversion module, and the single-chip microcomputer connects voltage doubling rectifier module respectively and LED is digital
Pipe.
Preferably, the sampling module includes operational amplifier A, the operational amplifier A negative input connection resistance D
One end, electrode input end connection resistance E one end, output end connect resistance F one end and electric capacity B one end respectively, and the electric capacity B is another
End ground connection, the resistance F other ends are grounded by resistance G, described resistance D other ends connection resistance C one end, the resistance C other ends
Connect resistance A one end respectively and electric capacity A one end, the resistance E other ends connect the resistance C other ends and resistance A one end, institute respectively
Electric capacity A other ends ground connection is stated, the resistance A other ends are grounded by resistance B.
Preferably, the AD conversion module includes voltage acquisition amplification chip and operational amplifier B, the voltage acquisition are put
The IN+ ends of large chip connect sampling module with IN- ends, and the RG+ ends of the voltage acquisition amplification chip and RG- are terminated into resistance H,
The voltage acquisition amplification chip output end connects resistance I one end and electric capacity C one end, electric capacity C other ends ground connection respectively；The fortune
Calculate amplifier B electrode input ends and connect the resistance I other ends and resistance J one end, resistance J other ends ground connection respectively, the computing is put
Big device B negative inputs connect resistance K one end, resistance L one end and electric capacity D one end, resistance K other ends ground connection, the fortune respectively
Calculate amplifier B output ends and connect the resistance L other ends, the electric capacity D other ends and resistance M one end, the resistance M other ends difference respectively
Connect single-chip microcomputer and electric capacity E one end, electric capacity E other ends ground connection.
Preferably, the voltage doubling rectifier module includes diode A, diode B, and the diode A negative poles connect electricity respectively
Hold G one end and diode B positive poles, the electric capacity G other ends connect electric capacity F one end and resistance N one end, the diode B negative poles respectively
Electric capacity H one end, resistance O one end are connected respectively, and the resistance O other ends connect electric capacity I one end, resistance P one end, resistance P respectively
Other end connection resistance Q one end, the resistance N other ends, the electric capacity F other ends, diode A positive poles, the electric capacity H other ends, electric capacity I
The other end, the resistance Q other ends are grounded.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model structural principle is simple, strong antijamming capability, and the sampling module of use can gather electricity in real time
Amount；The AD conversion module of use can eliminate the influence of collection voltages conductive line resistance values and other conductive line resistance values, improve voltage and adopt
The stability and precision of collection are higher, it is possible to increase electricity display quality.
(2) in the utility model, the voltage doubling rectifier module of use can realize further rectification and filter to output voltage
Ripple, further improve electricity display effect.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is sampling module schematic diagram of the present utility model；
Fig. 3 is AD conversion module schematic diagram of the present utility model；
Fig. 4 is voltage doubling rectifier module schematic diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1-4 are referred to, the utility model provides a kind of technical scheme：A kind of electric quantity display circuit, including PCB
1, it is digital that the PCB 1 is provided with single-chip microcomputer 2, AD conversion module 3, sampling module 4, voltage doubling rectifier module 5 and LED
Pipe 6, the sampling module 4 connect single-chip microcomputer 2 by AD conversion module 3, and the single-chip microcomputer 2 connects voltage doubling rectifier module 5 respectively
With LED charactrons 6.
In the utility model, sampling module 4 includes operational amplifier A 1c, and the operational amplifier A 1c negative inputs connect
Connecting resistance D4a one end, electrode input end connection resistance E5a one end, output end connect resistance F6a one end and electric capacity B2b mono- respectively
End, the electric capacity B2b other ends ground connection, the resistance F6a other ends are grounded by resistance G7a, and the resistance D4a other ends connect
Connecting resistance C3a one end, the resistance C3a other ends connect resistance A1a one end and electric capacity A1b one end, the resistance E5a other ends respectively
The resistance C3a other ends and resistance A1a one end, the electric capacity A1b other ends ground connection are connected respectively, and the resistance A1a other ends lead to
Cross resistance B2a ground connection.
In the utility model, AD conversion module 3 includes voltage acquisition amplification chip 7 and operational amplifier B2c, the voltage
The IN+ ends of collection amplification chip 7 connect sampling module 4, the RG+ ends and RG- ends of the voltage acquisition amplification chip 7 with IN- ends
Resistance H8a is accessed, the output end of voltage acquisition amplification chip 7 connects resistance I9a one end and electric capacity C3b one end, electric capacity respectively
The C3b other ends are grounded；The operational amplifier B2c electrode input ends connect the resistance I9a other ends and resistance J10a one end respectively,
The resistance J10a other ends are grounded, and the operational amplifier B2c negative inputs connect resistance K11a one end, resistance L12a mono- respectively
End and electric capacity D4b one end, resistance K11a other ends ground connection, it is another that the operational amplifier B2c output ends connect resistance L12a respectively
One end, the electric capacity D4b other ends and resistance M13a one end, the resistance M13a other ends connect single-chip microcomputer 2 and electric capacity E5b mono- respectively
End, electric capacity E5b other ends ground connection.
The sampling module that the utility model uses can gather electricity in real time；The AD conversion module of use can eliminate collection electricity
The influence of pressure conductive line resistance values and other conductive line resistance values, stability and the precision for improving voltage acquisition are higher, it is possible to increase
Electricity display quality.
In the utility model, voltage doubling rectifier module 5 includes diode A1d, diode B2d, the diode A1d negative poles point
Not Lian Jie electric capacity G7b one end and diode B2d positive poles, the electric capacity G7b other ends connect electric capacity F6b one end and resistance N14a mono- respectively
End, the diode B2d negative poles connect electric capacity H8b one end, resistance O15a one end respectively, and the resistance O15a other ends connect respectively
Connect electric capacity I9b one end, resistance P16a one end, resistance P16a other ends connection resistance Q17a one end, the resistance N14a other ends,
The electric capacity F6b other ends, diode A1d positive poles, the electric capacity H8b other ends, the electric capacity I9b other ends, the resistance Q17a other ends are grounded.
In the utility model, the voltage doubling rectifier module of use can realize further rectification and filtering to output voltage, further carry
High electricity display effect.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of electric quantity display circuit, including PCB (1), it is characterised in that：The PCB (1) is provided with monolithic
Machine (2), AD conversion module (3), sampling module (4), voltage doubling rectifier module (5) and LED charactrons (6), the sampling module
(4) single-chip microcomputer (2) is connected by AD conversion module (3), the single-chip microcomputer (2) connects voltage doubling rectifier module (5) and LED numbers respectively
Code pipe (6).
A kind of 2. electric quantity display circuit according to claim 1, it is characterised in that：The sampling module (4) includes computing
Amplifier A (1c), operational amplifier A (1c) negative input connect resistance D (4a) one end, electrode input end connection resistance
E (5a) one end, output end connect resistance F (6a) one end and electric capacity B (2b) one end respectively, and electric capacity B (2b) other end is grounded,
Resistance F (6a) other ends are grounded by resistance G (7a), and resistance D (4a) other end connects resistance C (3a) one end, electricity
Resistance C (3a) other end connects resistance A (1a) one end and electric capacity A (1b) one end respectively, and resistance E (5a) other end connects respectively
Resistance C (3a) other ends and resistance A (1a) one end, electric capacity A (1b) other end ground connection, resistance A (1a) other end lead to
Cross resistance B (2a) ground connection.
A kind of 3. electric quantity display circuit according to claim 1, it is characterised in that：The AD conversion module (3) includes electricity
Pressure collection amplification chip (7) and operational amplifier B (2c), the IN+ ends of the voltage acquisition amplification chip (7) connect with IN- ends
Sampling module (4), the RG+ ends of the voltage acquisition amplification chip (7) and RG- are terminated and put into resistance H (8a), the voltage acquisition
Large chip (7) output end connects resistance I (9a) one end and electric capacity C (3b) one end, electric capacity C (3b) other end ground connection respectively；It is described
Operational amplifier B (2c) electrode input end connects resistance I (9a) other ends and resistance J (10a) one end respectively, and resistance J (10a) is another
One end be grounded, operational amplifier B (2c) negative input connect respectively resistance K (11a) one end, resistance L (12a) one end and
Electric capacity D (4b) one end, resistance K (11a) other end ground connection, operational amplifier B (2c) output end connect resistance L respectively
(12a) other end, electric capacity D (4b) other ends and resistance M (13a) one end, resistance M (13a) other end connect monolithic respectively
Machine (2) and electric capacity E (5b) one end, electric capacity E (5b) other end ground connection.
A kind of 4. electric quantity display circuit according to claim 1, it is characterised in that：The voltage doubling rectifier module (5) includes
Diode A (1d), diode B (2d), diode A (1d) negative pole connect electric capacity G (7b) one end and diode B (2d) respectively
Positive pole, electric capacity G (7b) other end connect electric capacity F (6b) one end and resistance N (14a) one end, diode B (2d) negative pole respectively
Electric capacity H (8b) one end, resistance O (15a) one end are connected respectively, and resistance O (15a) other end connects electric capacity I (9b) one respectively
End, resistance P (16a) one end, resistance P (16a) other end connection resistance Q (17a) one end, resistance N (14a) other end, electricity
It is another to hold F (6b) other end, diode A (1d) positive pole, electric capacity H (8b) other end, electric capacity I (9b) other end, resistance Q (17a)
End is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720841990.0U CN207148217U (en) | 2017-07-12 | 2017-07-12 | A kind of electric quantity display circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720841990.0U CN207148217U (en) | 2017-07-12 | 2017-07-12 | A kind of electric quantity display circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207148217U true CN207148217U (en) | 2018-03-27 |
Family
ID=61674908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720841990.0U Active CN207148217U (en) | 2017-07-12 | 2017-07-12 | A kind of electric quantity display circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207148217U (en) |
-
2017
- 2017-07-12 CN CN201720841990.0U patent/CN207148217U/en active Active
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