CN208284207U - A kind of digital display module - Google Patents
A kind of digital display module Download PDFInfo
- Publication number
- CN208284207U CN208284207U CN201820917616.9U CN201820917616U CN208284207U CN 208284207 U CN208284207 U CN 208284207U CN 201820917616 U CN201820917616 U CN 201820917616U CN 208284207 U CN208284207 U CN 208284207U
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- charactron
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- current
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Abstract
The utility model provides a kind of digital display module, the digital display module includes socket XS, MCU, the first charactron LED1 to the 7th charactron LED7, first resistor R1 to the 7th resistance R7, the first triode Q1 to the 7th triode Q7 and 7 current-limiting resistances, the digital display module can make to realize the display to electric current, high and medium voltage, and resistance, capacitor and the current-limiting resistance being arranged can prevent overtension, prevent the damage of charactron, improve the stability that digital display module is shown, the service life of charactron is improved, is provided conveniently for user's operation.
Description
Technical field
The utility model belongs to electronic communication technology field, in particular to a kind of digital display module.
Background technique
It is provided on household electrical appliance, such as smoke exhaust ventilator, washing machine etc. for user-friendly and understand its work
The digital screen of voltage and current.The electric current and power supply of digital screen display are realized by the digital display module on electric-controlled plate
Display comprising display unit and control unit, display unit are generally made of charactron, and control unit is generally a MCU,
It is connected by pin with charactron, for controlling the display of charactron；But digital display module disclosed in the prior art by
In no current limiting unit, and then it is easily damaged charactron, causes to show corresponding parameter on digital screen, is the operation of user
It makes troubles.
Utility model content
Of the existing technology in order to solve the problems, such as, the utility model provides a kind of digital-scroll technique mould with current limiting unit
Block.
The utility model specific technical solution is as follows:
The utility model provides a kind of digital display module, which includes socket XS, MCU, the first number
Pipe LED1, the second charactron LED2, third charactron LED3, the 4th charactron LED4, the 5th charactron LED5, the 6th charactron
19 pins of LED6 and the 7th charactron LED7, the MCU pass through the ground level of the first triode of first resistor R1 connection Q1, and 18 draw
Foot passes through the ground level of the second triode of second resistance R2 connection Q2, and 20 pins pass through 3rd resistor R3 connection third transistor Q3's
Ground level, 1 pin pass through the ground level of the 4th triode Q4 of the 4th resistance R4 connection, and 2 pins pass through the 5th resistance R5 connection the five or three
The ground level of pole pipe Q5,9 pins pass through the ground level of the 6th triode Q6 of the 6th resistance R6 connection, and 7 pins are connected by the 7th resistance R7
The ground level of the 7th triode Q7 is connect, 11 pins to 17 pins are respectively connected with current-limiting resistance, and 8 pins connect+5V power supply, and 10 pins connect
Ground, 5 pins connect 3 pins of socket XS, and 1 pin of the socket XS connects+5V power supply, 2 pins ground connection；First charactron
LED1, the second charactron LED2, third charactron LED3, the 4th charactron LED4, the 5th charactron LED5, the 6th charactron
LED6 and the 7th charactron LED7 are connected with current-limiting resistance；The emitter of the first triode Q1 to the 7th triode Q7 according to
Secondary and the first charactron LED1, the second charactron LED2, third charactron LED3, the 4th charactron LED4, the 5th charactron
LED5, the 6th charactron LED6 and the 7th charactron LED7 connection, and collector connects+5V power supply.
Further to improve, the digital display module further includes first capacitor C1 and the second capacitor C2, first electricity
Both ends are connect with 1 pin of socket XS and 2 pins respectively after holding C1 and the second capacitor C2 parallel connection.
Further to improve, the digital display module further includes the first electrolytic capacitor Ca, the 8th resistance R8, the second electrolysis
The first end of capacitor Cb and the 9th resistance R9, the first electrolytic capacitor Ca are connected by 3 pins of the 8th resistance R8 and MCU,
The first end of second termination+5V power supply, the second electrolytic capacitor Cb is connected by 3 pins of the 9th resistance R9 and MCU, and second
Termination+5V power supply.
Further to improve, the digital display module further includes the tenth resistance R10, and the first of the tenth resistance R10
It holds and+5V power supply is connect and connect with 8 pins of MCU, 10 pins of second end and MCU are connected and are grounded.
The utility model has the following beneficial effects: digital display module provided by the utility model respectively to electric current, high pressure and
Middle pressure carries out control and shows, current-limiting resistance, resistance and the triode of setting play the role of current limliting and prevent overtension, in turn
The damage of charactron is prevented, the service life of stability and charactron that digital display module is shown is improved, is mentioned for user's operation
For convenient.
Detailed description of the invention
Fig. 1 is the circuit diagram of 1 digital display module of embodiment；
Fig. 2 is the circuit diagram of 2 digital display module of embodiment；
Fig. 3 is the circuit diagram of 3 digital display module of embodiment；
Fig. 4 is the circuit diagram of 4 digital display module of embodiment；
Fig. 5 is the electric current principle figure of 5 digital display module of embodiment.
Specific embodiment
Embodiment 1
The utility model embodiment 1 provide a kind of digital display module, the digital display module include socket XS,
MCU, the first charactron LED1, the second charactron LED2, third charactron LED3, the 4th charactron LED4, the 5th charactron
19 pins of LED5, the 6th charactron LED6 and the 7th charactron LED7, the MCU pass through the one or three pole of first resistor R1 connection
The ground level of pipe Q1,18 pins pass through the ground level of the second triode of second resistance R2 connection Q2, and 20 pins are connected by 3rd resistor R3
The ground level of third transistor Q3 is connect, 1 pin passes through the ground level of the 4th triode Q4 of the 4th resistance R4 connection, and 2 pins pass through the 5th
The ground level of the 5th triode Q5 of resistance R5 connection, 9 pins pass through the ground level of the 6th triode Q6 of the 6th resistance R6 connection, 7 pins
By the ground level of the 7th triode Q7 of the 7th resistance R7 connection, 11 pins to 17 pins are respectively connected with current-limiting resistance, and 8 pins connect+
5V power supply, 10 pins ground connection, 5 pins connect 3 pins of socket XS, and 1 pin of the socket XS connects+5V power supply, and 2 pins connect
Ground；First charactron LED1, the second charactron LED2, third charactron LED3, the 4th charactron LED4, the 5th charactron
LED5, the 6th charactron LED6 and the 7th charactron LED7 are connected with current-limiting resistance；The first triode Q1 to the seven or three
The emitter of pole pipe Q7 successively with the first charactron LED1, the second charactron LED2, third charactron LED3, the 4th charactron
LED4, the 5th charactron LED5, the 6th charactron LED6 and the 7th charactron LED7 connection, and collector connects+5V power supply.
In conjunction with Fig. 1, specific connection relationship is as follows between digital-scroll technique electric current device provided by the utility model: MCU
19 pins connection first resistor R1 first end, the second end of first resistor R1 connects the ground level of the first triode Q1, first
The emitter of triode Q1 connects 66 pins of the first charactron LED1 and collector connects+5V power supply；The 18 pins connection the of MCU
The first end of two resistance R2, the second end of second resistance R2 connect the ground level of the second triode Q2, the transmitting of the second triode Q2
Pole connects 76 pins of the second charactron LED2 and collector connects+5V power supply；The first of the 20 pins connection 3rd resistor R3 of MCU
The emitter connection third at end, the ground level of the second end connection third transistor Q3 of 3rd resistor R3, third transistor Q3 is digital
53 pins and collector of pipe LED3 connect+5V power supply；1 pin of MCU connects the first end of the 4th resistance R4, the 4th resistance R4's
Second end connects the ground level of the 4th triode Q4, the emitter of the 4th triode Q4 connect 33 pins of the 4th charactron LED4 and
Collector connects+5V power supply；2 pins of MCU connect the first end of the 5th resistance R5, the second end connection the five or three of the 5th resistance R5
The emitter of the ground level of pole pipe Q5, the 5th triode Q5 connects 43 pins of the 5th charactron LED5 and collector connects+5V power supply；
9 pins of MCU connect the first end of the 6th resistance R6, the ground level of the 6th triode Q6 of the 6th resistance R6 connection, the 6th triode
The emitter of Q6 connects 63 pins of the 6th charactron LED6 and collector connects+5V power supply；7 pins of MCU connect the 7th resistance
The first end of R7, the second end of the 7th resistance R7 connect the ground level of the 7th triode Q7, and the emitter of the 7th triode Q7 connects the
93 pins and collector of seven charactron LED7 connect+5V power supply；The first end of the 11 pins connection current-limiting resistance Ra of MCU, 12 draw
Foot connects the first end of current-limiting resistance Rb, and 13 pins connect the first end of current-limiting resistance Rc, and 14 pins connect current-limiting resistance Rd's
First end, 15 pins connect the first end of current-limiting resistance Re, and 16 pins connect the first end of current-limiting resistance Rf, 17 pins connection limit
The first end of leakage resistance Rg, 8 pins of MCU connect+5V power supply, and 10 pins ground connection, 5 pins connect 3 pins of socket XS, described to insert
1 pin of seat XS connects+5V power supply, 2 pins ground connection；67 pins, 73 pins, 68 pins, 69 pins, 71 of first charactron LED1
Pin, 74 pins and 72 pins respectively with current-limiting resistance Ra, current-limiting resistance Rb, current-limiting resistance Rc, current-limiting resistance Rd, current-limiting resistance
Re, current-limiting resistance Rf are connected with the second end of current-limiting resistance Rg；77 pins, 83 pins, 78 pins, 79 of second charactron LED2
Pin, 81 pins, 84 pins and 82 pins respectively with current-limiting resistance Ra, current-limiting resistance Rb, current-limiting resistance Rc, current-limiting resistance Rd,
Current-limiting resistance Re, current-limiting resistance Rf are connected with the second end of current-limiting resistance Rg；52 pins of third charactron LED3,46 pins,
51 pins, 50 pins, 48 pins, 45 pins and 47 pins respectively with current-limiting resistance Ra, current-limiting resistance Rb, current-limiting resistance Rc, limit
Leakage resistance Rd, current-limiting resistance Re, current-limiting resistance Rf are connected with the second end of current-limiting resistance Rg；Draw the 32 of 4th charactron LED4
Foot, 26 pins, 31 pins, 30 pins, 28 pins, 25 pins and 27 pins respectively with current-limiting resistance Ra, current-limiting resistance Rb, current limliting
Resistance Rc, current-limiting resistance Rd, current-limiting resistance Re, current-limiting resistance Rf are connected with the second end of current-limiting resistance Rg；5th charactron
42 pins, 36 pins, 41 pins, 40 pins, 38 pins, 35 pins and 37 pins of LED5 respectively with current-limiting resistance Ra, current limliting
Resistance Rb, current-limiting resistance Rc, current-limiting resistance Rd, current-limiting resistance Re, current-limiting resistance Rf are connected with the second end of current-limiting resistance Rg；The
62 pins, 56 pins, 61 pins, 60 pins, 58 pins, 55 pins and 57 pins of six charactron LED6 respectively with current-limiting resistance
The second end of Ra, current-limiting resistance Rb, current-limiting resistance Rc, current-limiting resistance Rd, current-limiting resistance Re, current-limiting resistance Rf and current-limiting resistance Rg
Connection；92 pins, 86 pins, 91 pins, 90 pins, 88 pins, 85 pins and 87 pins of 7th charactron LED7 respectively with
Current-limiting resistance Ra, current-limiting resistance Rb, current-limiting resistance Rc, current-limiting resistance Rd, current-limiting resistance Re, current-limiting resistance Rf and current-limiting resistance Rg
Second end connection.MCU model STC15W402AS.
The first charactron LED1 to the 7th charactron LED7 of the utility model forms display unit, wherein the first charactron
LED1 and the second charactron LED2 is used to show that electric current, third charactron LED3 to the 5th charactron LED5 to be used to show high pressure,
6th charactron LED6 and the 7th charactron LED7 in showing for pressing；First resistor R1 is to the 7th resistance R7, the first triode
Q1 to the 7th triode Q7 and 7 current-limiting resistances form current limiting unit, MCU composition control unit.
The working principle of digital display module provided by the utility model is as follows:
Control unit controls the charactron display to electric current, high and medium voltage respectively, is connected to control unit and charactron
Between current-limiting resistance play the role of divide current limliting, the resistance and triode connecting with charactron, which play, prevents overtension
Effect, the current limiting unit being made of resistance, triode and shunt resistance are used to prevent the damage of charactron, improve digital-scroll technique mould
The stability that block is shown improves the service life of charactron, provides conveniently for user's operation.
Embodiment 2
The digital display module that the utility model embodiment 2 provides is essentially identical with embodiment 1, the difference is that,
As shown in Fig. 2, the digital display module further includes first capacitor C1 and the second capacitor C2, the first capacitor C1 and the second electricity
Both ends are connect with the first end and second end of socket XS respectively after holding C2 parallel connection.+ 5V power supply is grounded and connect respectively after connection.
The utility model can play the role of filtering, reduce the direct current of output by introducing first capacitor and the second capacitor
The ripple of power supply, so that the electric current of output is more stable.
Embodiment 3
The digital display module that the utility model embodiment 3 provides is essentially identical with embodiment 2, the difference is that,
As shown in figure 3, the digital display module further includes further including the first electrolytic capacitor Ca, the 8th resistance R8, the second electrolytic capacitor
The first end of Cb and the 9th resistance R9, the first electrolytic capacitor Ca are connected by 3 pins of the 8th resistance R8 and MCU, and second
The first end of termination+5V power supply, the second electrolytic capacitor Cb is connected by 3 pins of the 9th resistance R9 and MCU, the second termination
+ 5V power supply.
Storage is played by the first electrolytic capacitor Ca of setting, the 8th resistance R8, the second electrolytic capacitor Cb and the 9th resistance R9
The effect of electric current and voltage.
Embodiment 4
The digital display module that the utility model embodiment 4 provides is essentially identical with embodiment 1, the difference is that,
As shown in figure 4, the digital display module further includes the tenth resistance R10, the first end of the tenth resistance R10 and the 8 of MCU are drawn
Foot connects and connects+5V power supply, the 10 pins connection of second end and MCU and is grounded.
Embodiment 5
The digital display module that the utility model embodiment 5 provides is essentially identical with embodiment 1, the difference is that,
As shown in figure 5, the digital display module further includes the detection unit being respectively arranged between current-limiting resistance and each charactron, it is described
Detection unit includes the 9th triode Q9, negative-phase input and the current-limiting resistance of the second end connection of collector and current-limiting resistance
Second comparator T2 of the second end connection of the first comparator T1 and normal phase input end and current-limiting resistance of second end connection；It is described
The emitter of 9th triode Q9 connects+5V power supply, and ground level connects the anode of the second diode D2, and the first comparator T1 is just
Mutually input termination a reference value Vref2, the negative-phase input of the second comparator T2 meet a reference value Vref3, and described first compares
The output end of device T1 and the second comparator T2 are connect with the first input end of the first NAND gate F1, the first NAND gate F1's
The collector of second the 9th triode Q9 of input termination, the ground level of the tenth triode Q10 of third output termination, the 13rd pole
The emitter of pipe Q10 is grounded, and collector passes through first diode D1 series connection the first adjustable resistance R11 and the second adjustable resistance R12,
The second end of the second adjustable resistance R12 is connect with the cathode of the second diode D2 and charactron respectively.
The working principle of inspection unit provided by the utility model is as follows:
Wherein a reference value Vref2 is greater than Vref3, first comparator T1 and the second comparator T2 for the electricity of a certain current-limiting resistance
Flow valuve A is compared with a reference value Vref2 and Vref3, when A is located between a reference value Vref2 and Vref3, the first NAND gate
F1 exports low level, and value is less than preset value, is set according to the stationary value of the second diode D2, the second diode D2 quilt
Cut-off, since the 9th triode Q9 acquisition+5V powers, after the first NAND gate F1, Q10 is switched on, and electric current can by first
Output, can be by regulating and controlling the first adjustable resistance in this access to each charactron after adjusting resistance R11 and the second adjustable resistance R12
The resistance value of R11 and the second adjustable resistance R12 control the size of electric current, and the essence of regulation is remarkably improved after two adjustable resistance crossfires
Degree；When A is greater than Vref2 or is less than Vref3, the first NAND gate F1 exports high level, and the second diode D2 is breakdown, at this point,
The ground level of Q9 obtains enough bias voltages, and the collector voltage of the 9th triode Q9 is 0, so the 9th triode is closed,
Tenth triode Q10 is ended, and output end is blocked.It is every to can control each charactron by the inspection and regulation of inspection unit
The brightness of one section of display, makes to be in a constant range by the electric current of each section, and then it is equal to guarantee that each section is shown
Even property improves display effect, and can control the conducting of each section.
Above embodiments are only that preferred embodiments of the present invention are described, not to the model of the utility model
It encloses and is defined, under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to the utility model
The various changes and improvements made of technical solution should all fall into the protection scope that claims of the utility model determine.
Claims (4)
1. a kind of digital display module, which is characterized in that the digital display module includes socket XS, MCU, the first charactron
LED1, the second charactron LED2, third charactron LED3, the 4th charactron LED4, the 5th charactron LED5, the 6th charactron
19 pins of LED6 and the 7th charactron LED7, the MCU pass through the ground level of the first triode of first resistor R1 connection Q1, and 18 draw
Foot passes through the ground level of the second triode of second resistance R2 connection Q2, and 20 pins pass through 3rd resistor R3 connection third transistor Q3's
Ground level, 1 pin pass through the ground level of the 4th triode Q4 of the 4th resistance R4 connection, and 2 pins pass through the 5th resistance R5 connection the five or three
The ground level of pole pipe Q5,9 pins pass through the ground level of the 6th triode Q6 of the 6th resistance R6 connection, and 7 pins are connected by the 7th resistance R7
The ground level of the 7th triode Q7 is connect, 11 pins to 17 pins are respectively connected with current-limiting resistance, and 8 pins connect+5V power supply, and 10 pins connect
Ground, 5 pins connect 3 pins of socket XS, and 1 pin of the socket XS connects+5V power supply, 2 pins ground connection；First charactron
LED1, the second charactron LED2, third charactron LED3, the 4th charactron LED4, the 5th charactron LED5, the 6th charactron
LED6 and the 7th charactron LED7 are connected with current-limiting resistance；The emitter of the first triode Q1 to the 7th triode Q7 according to
Secondary and the first charactron LED1, the second charactron LED2, third charactron LED3, the 4th charactron LED4, the 5th charactron
LED5, the 6th charactron LED6 and the 7th charactron LED7 connection, and collector connects+5V power supply.
2. digital display module as described in claim 1, which is characterized in that the digital display module further includes first capacitor
After C1 and the second capacitor C2, the first capacitor C1 and the second capacitor C2 are in parallel both ends respectively with 1 pin of socket XS and 2 pins
Connection.
3. digital display module as claimed in claim 2, which is characterized in that the digital display module further includes the first electrolysis
Capacitor Ca, the 8th resistance R8, the second electrolytic capacitor Cb and the 9th resistance R9, the first end of the first electrolytic capacitor Ca pass through the
3 pins of eight resistance R8 and MCU connect, the second termination+5V power supply, and the first end of the second electrolytic capacitor Cb passes through the 9th electricity
Hinder the 3 pins connection of R9 and MCU, the second termination+5V power supply.
4. digital display module as described in claim 1, which is characterized in that the digital display module further includes the tenth resistance
The first end of R10, the tenth resistance R10 and 8 pins of MCU connect and connect+5V power supply, the 10 pins company of second end and MCU
It connects and is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820917616.9U CN208284207U (en) | 2018-06-13 | 2018-06-13 | A kind of digital display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820917616.9U CN208284207U (en) | 2018-06-13 | 2018-06-13 | A kind of digital display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208284207U true CN208284207U (en) | 2018-12-25 |
Family
ID=64699001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820917616.9U Active CN208284207U (en) | 2018-06-13 | 2018-06-13 | A kind of digital display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208284207U (en) |
-
2018
- 2018-06-13 CN CN201820917616.9U patent/CN208284207U/en active Active
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