CN204102474U - A kind of Electronic Paper perpetual calendar - Google Patents
A kind of Electronic Paper perpetual calendar Download PDFInfo
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- CN204102474U CN204102474U CN201420503089.9U CN201420503089U CN204102474U CN 204102474 U CN204102474 U CN 204102474U CN 201420503089 U CN201420503089 U CN 201420503089U CN 204102474 U CN204102474 U CN 204102474U
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Abstract
The utility model discloses a kind of Electronic Paper perpetual calendar, comprise segmentation Electronic Paper, EFM32 minimum system, dot matrix Electronic Paper, TF card interface circuit, power supply and key circuit, humiture collection device, segmentation Electronic Paper driving chip, dot matrix Electronic Paper driving circuit, the first pcb board and the second pcb board.The utility model comprises segmentation Electronic Paper, can show numeral, week, the Chinese zodiac or constellation, and adds dot matrix Electronic Paper needing to show the place of different literals, can Show Picture and the information such as word, complete function; The EFM32 minimum system of Norway EnergyMicro super low-power consumption is adopted to process, than using the low in energy consumption of other microcontroller; Adopt Electronic Paper to show, than traditional TFT power saving, still can keep the display state before power down after power down, very power saving, serviceable life is longer.The utility model can be widely used in electronics field.
Description
Technical field
The utility model relates to electronics field, especially a kind of Electronic Paper perpetual calendar.
Background technology
In daily life, people often use papery desk calendar, electronics or mechanical watch to know the information such as current time, date, red-letter day.But conventional papery desk calendar with 1 year, all will can only renew, very not environmentally every year.Also often need in life to know festival information, and be divided into red-letter day various, as Chinese solar term and west red-letter day etc., therefore people many times need to browse the mode such as perpetual calendar or online and inquire about.Even if be printed with various red-letter day in calendar, but also cannot to do sth. in advance or active warning user on the same day, convenient not.
In order to address this problem, Electronic desk calendar arises at the historic moment.But Electronic desk calendar on the market at present, the mostly just function such as the display on simple realization time, date and alarm clock calling, function singleness, easily makes user feel dull dull, thus lacks and use enjoyment.In addition, Electronic desk calendar is in the market nearly all adopt TFT(Thin Film Transistor (TFT)) as display device, needing during use powers to TFT incessantly could continue display, and need to change battery every some months, inadequate power saving, serviceable life is shorter.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is: the Electronic Paper perpetual calendar providing a kind of complete function, power saving and long service life.
The utility model solves the technical scheme that its technical matters adopts:
A kind of Electronic Paper perpetual calendar, comprise segmentation Electronic Paper, EFM32 minimum system, dot matrix Electronic Paper, TF card interface circuit, power supply and key circuit, humiture collection device, segmentation Electronic Paper driving chip, dot matrix Electronic Paper driving circuit, the first pcb board and the second pcb board, described segmentation Electronic Paper passes through I
2c interface is connected with EFM32 minimum system, described dot matrix Electronic Paper is connected with EFM32 minimum system by I/O mouth, described EFM32 minimum system is connected with TF card interface circuit by SPI interface, described power supply and key circuit are connected with EFM32 minimum system by USB interface, and described humiture collection device is connected with EFM32 minimum system by unibus; Described segmentation Electronic Paper driving chip is bundled on the first pcb board, and described EFM32 minimum system, dot matrix Electronic Paper driving circuit, TF card interface circuit, power supply and key circuit and humiture collection device are all arranged on the second pcb board.
Further, described segmentation Electronic Paper is 180 segmentation Electronic Paper, comprise two 8 segmentation Electronic Paper modules, three rice word 8 segmentation Electronic Paper modules and astrolabe segmentation Electronic Paper module, described segmentation Electronic Paper driving chip comprises a TT31090 chip and the 2nd TT31090 chip, the output terminal of a described TT31090 chip is connected with the input end of two 8 segmentation Electronic Paper modules, and the output terminal of described 2nd TT31090 chip is connected with the input end of three rice word 8 segmentation Electronic Paper modules and the input end of astrolabe segmentation Electronic Paper module respectively.
Further, described EFM32 minimum system comprises EFM32ZG210F32-QFN32 chip, digital power filtering circuit and analog power filtering circuit, reset circuit and high precision 32.768kHz crystal oscillator, described digital power filtering circuit and analog power filtering circuit, reset circuit is all connected with EFM32ZG210F32-QFN32 chip with high precision 32.768kHz crystal oscillator, described analog power filtering circuit comprises magnetic bead, 3V power supply, first resistance and filter capacitor, described 3V power supply passes through magnetic bead successively, first resistance is connected with filter capacitor and then with the earth, described first resistance is also connected with the analog electrical source of EFM32ZG210F32-QFN32 chip.
Further, described dot matrix Electronic Paper is 2.1 cun of Electronic Paper, described dot matrix Electronic Paper driving circuit comprises booster circuit, the pulse that described booster circuit provides according to 2.1 cun of Electronic Paper and provide the work voltage of 15 ~ 22V to 2.1 cun of Electronic Paper, is also connected with shunt capacitance between the power pin of described 2.1 cun of Electronic Paper and the earth.
Further, described TF card interface circuit comprises the field effect transistor for control TF cartoon electricity or power-off, and the grid of described field effect transistor is connected with the I/O mouth of EFM32ZG210F32-QFN32 chip.
Further, described power supply and key circuit comprise lithium battery power supply circuit, dry cell power supply circuit, change-over switch, key circuit, described EFM32ZG210F32-QFN32 chip is connected with lithium battery power supply circuit and dry cell power supply circuit respectively by change-over switch, described lithium battery power supply circuit comprises the externally fed interface, lithium battery charging circuit and the reduction voltage circuit that are connected with external power source, and described external power source passes through externally fed interface, lithium battery charging circuit and reduction voltage circuit and then gather pin with the AD of EFM32ZG210F32-QFN32 chip to be connected successively; Described dry cell power supply circuit comprises the dry cell source be formed in parallel by two joint dry cells, and described dry cell source gathers pin with the AD of EFM32ZG210F32-QFN32 chip and is connected; Described key circuit comprises film key, and described film key is connected with EFM32ZG210F32-QFN32 chip by FPC seat.
Further, described humiture collection device is DHT11 Temperature Humidity Sensor, and described DHT11 Temperature Humidity Sensor is connected with EFM32ZG210F32-QFN32 chip by unibus.
The beneficial effects of the utility model are: comprise segmentation Electronic Paper, can show numeral, week, the Chinese zodiac or constellation, and add dot matrix Electronic Paper needing to show the place of different literals, can Show Picture and the information such as word, complete function; The EFM32 minimum system of Norway Energy Micro super low-power consumption is adopted to process, than using the low in energy consumption of other microcontroller; Adopt Electronic Paper to show, than traditional TFT power saving, still can keep the display state before power down after power down, very power saving, serviceable life is longer.Further, segmentation Electronic Paper comprises two 8 segmentation Electronic Paper modules, three the rice word 8 segmentation Electronic Paper modules reusable module different with astrolabe segmentation Electronic Paper module these 3 kinds, can need to carry out different putting adjustment to the display layout of perpetual calendar according to difference, very flexibly and convenient.Further, feed circuit can select lithium battery power supply circuit or dry cell power supply circuit as required, convenient.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the functional block diagram of a kind of Electronic Paper perpetual calendar of the utility model;
Fig. 2 is the structured flowchart of the utility model segmentation Electronic Paper and segmentation Electronic Paper driving chip;
Fig. 3 is the structured flowchart of the utility model EFM32 minimum system;
Fig. 4 is the structured flowchart of the utility model power supply and key circuit;
Fig. 5 is the overall appearance figure of Electronic Paper perpetual calendar in the utility model embodiment one;
Fig. 6 is the integrated circuit structure principle chart of Electronic Paper perpetual calendar in the utility model embodiment one;
Fig. 7 is the minimum system circuit theory diagrams of main control MCU in the utility model embodiment one;
Fig. 8 is the circuit theory diagrams of 2.1 cun of Electronic Paper driving circuits in the utility model embodiment one;
Fig. 9 is the circuit theory diagrams of TF card interface circuit in the utility model embodiment two;
Figure 10 is the circuit theory diagrams of Temperature Humidity Sensor in the utility model embodiment one;
Figure 11 is the circuit theory diagrams of power supply and key circuit in the utility model embodiment one;
Figure 12 is the circuit theory diagrams of 180 sections of Electronic Paper in the utility model embodiment one.
Embodiment
With reference to Fig. 1, a kind of Electronic Paper perpetual calendar, comprise segmentation Electronic Paper, EFM32 minimum system, dot matrix Electronic Paper, TF card interface circuit, power supply and key circuit, humiture collection device, segmentation Electronic Paper driving chip, dot matrix Electronic Paper driving circuit, the first pcb board and the second pcb board, described segmentation Electronic Paper passes through I
2c interface is connected with EFM32 minimum system, described dot matrix Electronic Paper is connected with EFM32 minimum system by I/O mouth, described EFM32 minimum system is connected with TF card interface circuit by SPI interface, described power supply and key circuit are connected with EFM32 minimum system by USB interface, and described humiture collection device is connected with EFM32 minimum system by unibus; Described segmentation Electronic Paper driving chip is bundled on the first pcb board, and described EFM32 minimum system, dot matrix Electronic Paper driving circuit, TF card interface circuit, power supply and key circuit and humiture collection device are all arranged on the second pcb board.
Wherein, segmentation Electronic Paper, for showing numeral, week, the Chinese zodiac and constellation;
EFM32 minimum system, triggers corresponding control signal for the signal according to input or collection;
Dot matrix Electronic Paper, for showing word and pictorial information;
TF card interface circuit, for carrying out communicating with EFM32 minimum system and the data of storing communication;
Power supply and key circuit, for providing power supply and carrying out key-press input;
Humiture collection device, for gathering the humiture information of environment;
Segmentation Electronic Paper driving chip, for driving segmentation Electronic Paper;
Dot matrix Electronic Paper driving circuit, for drive point configuration Electronic Paper;
First pcb board and the second pcb board, play a part to support and realize electrical connection;
TF card interface circuit is also connected with TF card (flash memory cards), for the data of storing communication.
With reference to Fig. 2, be further used as preferred embodiment, described segmentation Electronic Paper is 180 segmentation Electronic Paper, comprise two 8 segmentation Electronic Paper modules, three rice word 8 segmentation Electronic Paper modules and astrolabe segmentation Electronic Paper module, described segmentation Electronic Paper driving chip comprises a TT31090 chip and the 2nd TT31090 chip, the output terminal of a described TT31090 chip is connected with the input end of two 8 segmentation Electronic Paper modules, the output terminal of described 2nd TT31090 chip is connected with the input end of three rice word 8 segmentation Electronic Paper modules and the input end of astrolabe segmentation Electronic Paper module respectively.
With reference to Fig. 3, be further used as preferred embodiment, described EFM32 minimum system comprises EFM32ZG210F32-QFN32 chip, digital power filtering circuit and analog power filtering circuit, reset circuit and high precision 32.768kHz crystal oscillator, described digital power filtering circuit and analog power filtering circuit, reset circuit is all connected with EFM32ZG210F32-QFN32 chip with high precision 32.768kHz crystal oscillator, described analog power filtering circuit comprises magnetic bead, 3V power supply, first resistance and filter capacitor, described 3V power supply passes through magnetic bead successively, first resistance is connected with filter capacitor and then with the earth, described first resistance is also connected with the analog electrical source of EFM32ZG210F32-QFN32 chip.
Be further used as preferred embodiment, described dot matrix Electronic Paper is 2.1 cun of Electronic Paper, described dot matrix Electronic Paper driving circuit comprises booster circuit, the pulse that described booster circuit provides according to 2.1 cun of Electronic Paper and provide the work voltage of 15 ~ 22V to 2.1 cun of Electronic Paper, is also connected with shunt capacitance between the power pin of described 2.1 cun of Electronic Paper and the earth.
Be further used as preferred embodiment, described TF card interface circuit comprises the field effect transistor for control TF cartoon electricity or power-off, and the grid of described field effect transistor is connected with the I/O mouth of EFM32ZG210F32-QFN32 chip.
With reference to Fig. 4, be further used as preferred embodiment, described power supply and key circuit comprise lithium battery power supply circuit, dry cell power supply circuit, change-over switch, key circuit, described EFM32ZG210F32-QFN32 chip is connected with lithium battery power supply circuit and dry cell power supply circuit respectively by change-over switch, described lithium battery power supply circuit comprises the externally fed interface be connected with external power source, lithium battery charging circuit and reduction voltage circuit, described external power source is successively by externally fed interface, lithium battery charging circuit and reduction voltage circuit and then gather pin with the AD of EFM32ZG210F32-QFN32 chip and be connected, described dry cell power supply circuit comprises the dry cell source be formed in parallel by two joint dry cells, and described dry cell source gathers pin with the AD of EFM32ZG210F32-QFN32 chip and is connected, described key circuit comprises film key, and described film key is connected with EFM32ZG210F32-QFN32 chip by FPC seat.
Be further used as preferred embodiment, described humiture collection device is DHT11 Temperature Humidity Sensor, and described DHT11 Temperature Humidity Sensor is connected with EFM32ZG210F32-QFN32 chip by unibus.
Below in conjunction with specific embodiment, the utility model is described in further detail.
Embodiment one
Electronic Paper perpetual calendar of the present utility model, adopt Electronic Paper modular form flexibly in the design, Electronic Paper drive part has separately one piece of binding circuit board, multi-form perpetual calendar product can be pieced together out very neatly, and master control uses the EFM32 single-chip microcomputer of low-power consumption, and the independent one piece of PCB of main control part can become again an independent small-sized perpetual calendar product.Overall effect as shown in Figure 5, wherein, above Part I be segmentation display section, below Part II be dot matrix display section.And the one-piece construction of related circuit as shown in Figure 6, wherein " 180 sections of Electronic Paper " constitutes the part 1 in Fig. 5; Other parts, as main control board and dot matrix display section (abbreviation main control circuit part), are the part 2 in Fig. 5.I is passed through between two pieces of circuit boards
2c interface connects.
Below these two parts are described in detail:
One, main control circuit part
Main control circuit part of the present utility model comprises main control MCU, 2.1 cun of Electronic Paper, TF card, Temperature Humidity Sensor and power supplys and key circuit part.
Main control MCU of the present utility model uses the super low-power consumption ARM Cortex M0+ kernel single-chip microcomputer of Norway Energy Micro, and model is preferably EFM32ZG210F32-QFN32.The utility model is suitable for the super low-power consumption ARM EFM32 system single-chip microcomputer of any use Norway Energy Micro, and its minimum system circuit as shown in Figure 7, can be divided into 3 parts, comprise:
(1) filtering circuit of DVDD and AVDD
Because AVDD requires higher to voltage stability, so the utility model adds magnetic bead L1, and add resistance R2 to carry out RC filtering.
(2) reset circuit
The utility model negative edge after switch S 1 is pressed triggers EFM32ZG210F32-QFN32 chip reset.
(3) high precision 32.768kHz crystal oscillator,
Because EFM32ZG210F32-QFN32 chip internal carries RC oscillator, so run normal codes can use inner RC oscillator, but the stopwatch of perpetual calendar is very strict to time requirement, the time-reversal mirror of very little error through the several months also there will be large time deviation, for avoiding the generation of this phenomenon, the utility model adds a high precision 32.768kHz crystal oscillator in the periphery of chip.
It is dot matrix display device that the present embodiment chooses 2.1 cun of Electronic Paper, can show any word, such as display menu, game etc., diverse in function.As shown in Figure 8, left-hand component is booster circuit to the driving circuit of 2.1 cun of Electronic Paper, and this booster circuit provides pulse by Electronic Paper, and provides the operating voltage of 15 ~ 22V to Electronic Paper, therefore controls without the need to external program.Simultaneously for ensureing gate pole, the source electrode high voltage of Electronic Paper internal fet, as shown in Fig. 8 right-hand component, the utility model needs to increase shunt capacitance in the corresponding power pin of Electronic Paper.The interface of the utility model 2.1 cun of Electronic Paper adopts the FPC interface of 0.5mm spacing 24pin, is the SPI interface that I/O mouth is simulated with the communication protocol interface of outside.The utility model is equally applicable to the Electronic Paper of 2.9 cun of Electronic Paper or other size.
As shown in Figure 9, the utility model requires higher to the read or write speed of TF card TF card interface circuit, therefore needs the control signal triggering EFM32ZG210F32-QFN32 chip to control TF card.But the most of the time does not need to use TF card at ordinary times, and therefore the utility model adds a field effect transistor Q2, by triggering the control signal control Q2 of a main control chip I/O pin, the power supply of whole TF card just can be turned off, to save power consumption.
Temperature Humidity Sensor, can in real time to the humiture information that feedback is current for detecting the ambient conditions of periphery, and what the utility model adopted is DHT11 Temperature Humidity Sensor, and this sensor is communicated with main control chip by unibus form, as shown in Figure 10.
Power unit of the present utility model comprises two schemes, by welding different devices on circuit boards, can realize different power supply modes, is lithium battery power supply and dry cell power supply scheme respectively.When using lithium battery power supply, charging inlet uses J2(micro USB) form, U2 is lithium cell charging managing chip, and lithium battery direct voltage output is 3.6V ~ 4.2V, can not directly supply whole system work, therefore also needs U3 step-down chip; Use dry cell power supply then not need these circuit, only need welding battery tray BT1 and R21.The utility model power supply includes the function of voltage detecting, only need weld R22, R23 when realizing, and by the voltage-drop loading after dividing potential drop to EFM32ZG210F32-QFN32 chip AD gather pin can detect battery level information, as shown in the bottom left section of Figure 11.
Button of the present utility model adopts film key, and as the K2 of the upper left of Figure 11, it is connected with EFM32ZG210F32-QFN32 chip by 0.5mm 6pin FPC seat.Film key of the present utility model comprises 5 buttons altogether, is respectively: upper and lower, left and right, OK button.
Below be namely main control circuit part, this main control circuit part is encapsulated in separately in one piece of PCB, can form separately a little perpetual calendar.The function of this little perpetual calendar all concentrates in film key and 2.1 cun of Electronic Paper, therefore can only make very simple perpetual calendar, humiture Presentation Function.
Two, 180 sections of Electronic Paper circuit parts
The information such as the year, month, day, hour, min of perpetual calendar display and week all use numeral, therefore can show by the form of segmentation charactron, whole segmentation viewing area shares 180 sections of Electronic Paper, is divided into 3 kinds of different modules, 3 kinds of forms respectively as indicated in Figure 12.Circle 1 is two 8 segmentation Electronic Paper modules, circle 2 be three rice word 8 segmentation Electronic Paper modules, No. 3, circles is astrolabe (as Chinese zodiac astrolabe, constellation astrolabe etc.) segmentation Electronic Paper module, wherein two 8 segmentation Electronic Paper modules need 15 sections to represent, the utility model shares 6 two 8 segmentation Electronic Paper modules, just 90 sections.And three rice word 8 segmentation Electronic Paper modules and astrolabe segmentation Electronic Paper module add up about 90 sections, the Electronic Paper driving chip that therefore the utility model employs two 90 sections altogether drives 180 sections of Electronic Paper parts.
Segmentation display section of the present utility model, uses 3 kinds of multi-form modules, and each module is made independently individual and is connected with base plate by FPC line, and therefore the display layout of utility model can need to do according to difference and different puts adjustment.No matter but be which kind of pose pattern, drive part all as shown in Figure 2, need use two 90 sections Electronic Paper driving chip TT31090.TT31090 chip is that its inside has carried charge pump by a segmentation Electronic Paper driving chip of the brilliant scientific and technological specialize in sky, Shenzhen, and peripheral circuit that therefore need not be too many can realize the driving of segmentation Electronic Paper.Because TT31090 chip adopts COB packing forms, need to be tied on pcb board, and usually bind lower than the yield of common surface-mounted device, therefore for ensureing the success ratio of whole circuit board, the utility model has done binding board to above two TT31090 chips separately, that is to say the base plate of all display modules in Figure 12, each module is connected with base plate by the form of FPC seat.
Embodiment two
With reference to Figure 11, the second embodiment of the present utility model:
Main control circuit part of the present utility model had both been suitable for segmentation and had shown large perpetual calendar, simultaneously the small-sized perpetual calendar of also compatible main control part separately.Wherein, segmentation shows large perpetual calendar and adopts common No. 7 dry cell power supplies, and small-sized perpetual calendar then adopts the power supply mode of lithium battery.The utility model has considered this two kinds of power supply modes, for large perpetual calendar and these two kinds of different products of small-sized perpetual calendar, only need select to weld different components and parts on plank.
(1) lithium battery power supply
Adopt lithium battery power supply, main consideration two parts content: the charging of lithium battery, the step-down of lithium battery.
The externally fed interface of the present embodiment is Micro USB interface, during lithium cell charging, needs external USB to power and inputs VIN, then input in the lithium battery charging circuit of Figure 11 bottom left section.The effect of D4 prevents electric current from pouring in down a chimney, and only allows charging current flow into and prevent internal current from outbound flowing; LED3 is pilot lamp, when charging lamp bright, when being full of electricity lamp go out, lamp flicker when not putting BT1 lithium battery and provide VIN to charge.The indicating status of LED3 lamp, depends on that lithium cell charging managing chip U2(is as PJ4054 chip) built-in function, be reflected to the pin one of chip U2.By regulating the resistance size of R20, U2 can be regulated the charging current of lithium battery BT1, charging current I
bAT=(V
pROG/ R
pROG) × 1000 (A), wherein V
pROGvoltage can have small change according to different temperature and VIN, these differences can be ignored here, depending on V
pROG=1V, therefore works as R in figure
pROGduring=3.3k Ω, I
bAT≈ 303mA.The charging circuit of Figure 11 bottom left section is designed to constant-current charge, and when the voltage of BT1 reaches 4.2V, the BAT mouth of U2 stops providing charging current, and lithium cell charging completes; When after lithium battery power consumption, voltage is down to 3.8V, the BAT mouth of U2 provides charging current to lithium battery again.
Because the normal output voltage range of BT1 lithium battery is 3.6V ~ 4.2V, and EFM32ZG210F32-QFN32 chip operation rated voltage is 3.3V, therefore the power supply VCC that provides of lithium battery, can not directly supply EFM32ZG210F32-QFN32 chip operation, and also need a step-down chip, voltage is down to 3.3V, as the U3 in Figure 11.The circuit of this step-down chip U3 is very simple, and only need respectively to connect a shunt capacitance at input/output terminal, VCC becomes 3V after this chip, represents in figure with " 3V ", and be the power supply of compatible dry cell and the sign done, reality exports as 3.3V herein.
For lithium battery power supply scheme, the voltage gathering lithium battery is very meaningful, because lithium battery dump energy is directly reflected on its output voltage, therefore add R22, R23 at the output terminal of lithium battery and make bleeder circuit, divide pressure handle to be greater than the treatable voltage of single-chip microcomputer to reduce by half, make variation in voltage in the treatable 3.3V voltage range of single-chip microcomputer, the AD that BAT_AD is connected to single-chip microcomputer gathers on pin, can get information of voltage exactly.Simultaneously for preventing the power consumption of bleeder circuit, the utility model R22 and R23 all have employed the large resistance of 10M Ω.
(2) dry cell power supply
For dry cell power supply scheme, only need to weld BT1 and R21 in Figure 11, principle is: binodal dry cell is connected the supply VCC provided, and need not do step-down process, directly by the 0 Ω resistance of R21, be supplied to whole governor circuit work (as shown in lower right-most portion in Figure 11).The change in voltage of dry cell is also not obvious, for the voltage detecting of dry cell, then meaning is relatively little, but in order to system can detect the charge condition of dry cell, also the AD of EFM32ZG210F32-QFN32 chip is gathered pin and connect, reserved voltage collection circuit R22, R23 equally.
More than that better enforcement of the present utility model is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (7)
1. an Electronic Paper perpetual calendar, it is characterized in that: comprise segmentation Electronic Paper, EFM32 minimum system, dot matrix Electronic Paper, TF card interface circuit, power supply and key circuit, humiture collection device, segmentation Electronic Paper driving chip, dot matrix Electronic Paper driving circuit, the first pcb board and the second pcb board, described segmentation Electronic Paper passes through I
2c interface is connected with EFM32 minimum system, described dot matrix Electronic Paper is connected with EFM32 minimum system by I/O mouth, described EFM32 minimum system is connected with TF card interface circuit by SPI interface, described power supply and key circuit are connected with EFM32 minimum system by USB interface, and described humiture collection device is connected with EFM32 minimum system by unibus; Described segmentation Electronic Paper driving chip is bundled on the first pcb board, and described EFM32 minimum system, dot matrix Electronic Paper driving circuit, TF card interface circuit, power supply and key circuit and humiture collection device are all arranged on the second pcb board.
2. a kind of Electronic Paper perpetual calendar according to claim 1, it is characterized in that: described segmentation Electronic Paper is 180 segmentation Electronic Paper, comprise two 8 segmentation Electronic Paper modules, three rice word 8 segmentation Electronic Paper modules and astrolabe segmentation Electronic Paper module, described segmentation Electronic Paper driving chip comprises a TT31090 chip and the 2nd TT31090 chip, the output terminal of a described TT31090 chip is connected with the input end of two 8 segmentation Electronic Paper modules, the output terminal of described 2nd TT31090 chip is connected with the input end of three rice word 8 segmentation Electronic Paper modules and the input end of astrolabe segmentation Electronic Paper module respectively.
3. a kind of Electronic Paper perpetual calendar according to claim 2, it is characterized in that: described EFM32 minimum system comprises EFM32ZG210F32-QFN32 chip, digital power filtering circuit and analog power filtering circuit, reset circuit and high precision 32.768kHz crystal oscillator, described digital power filtering circuit and analog power filtering circuit, reset circuit is all connected with EFM32ZG210F32-QFN32 chip with high precision 32.768kHz crystal oscillator, described analog power filtering circuit comprises magnetic bead, 3V power supply, first resistance and filter capacitor, described 3V power supply passes through magnetic bead successively, first resistance is connected with filter capacitor and then with the earth, described first resistance is also connected with the analog electrical source of EFM32ZG210F32-QFN32 chip.
4. a kind of Electronic Paper perpetual calendar according to claim 3, it is characterized in that: described dot matrix Electronic Paper is 2.1 cun of Electronic Paper, described dot matrix Electronic Paper driving circuit comprises booster circuit, the pulse that described booster circuit provides according to 2.1 cun of Electronic Paper and provide the work voltage of 15 ~ 22V to 2.1 cun of Electronic Paper, is also connected with shunt capacitance between the power pin of described 2.1 cun of Electronic Paper and the earth.
5. a kind of Electronic Paper perpetual calendar according to claim 4, is characterized in that: described TF card interface circuit comprises the field effect transistor for control TF cartoon electricity or power-off, and the grid of described field effect transistor is connected with the I/O mouth of EFM32ZG210F32-QFN32 chip.
6. a kind of Electronic Paper perpetual calendar according to claim 5, it is characterized in that: described power supply and key circuit comprise lithium battery power supply circuit, dry cell power supply circuit, change-over switch, key circuit, described EFM32ZG210F32-QFN32 chip is connected with lithium battery power supply circuit and dry cell power supply circuit respectively by change-over switch, described lithium battery power supply circuit comprises the externally fed interface be connected with external power source, lithium battery charging circuit and reduction voltage circuit, described external power source is successively by externally fed interface, lithium battery charging circuit and reduction voltage circuit and then gather pin with the AD of EFM32ZG210F32-QFN32 chip and be connected, described dry cell power supply circuit comprises the dry cell source be formed in parallel by two joint dry cells, and described dry cell source gathers pin with the AD of EFM32ZG210F32-QFN32 chip and is connected, described key circuit comprises film key, and described film key is connected with EFM32ZG210F32-QFN32 chip by FPC seat.
7. a kind of Electronic Paper perpetual calendar according to any one of claim 3-6, is characterized in that: described humiture collection device is DHT11 Temperature Humidity Sensor, and described DHT11 Temperature Humidity Sensor is connected with EFM32ZG210F32-QFN32 chip by unibus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420503089.9U CN204102474U (en) | 2014-09-02 | 2014-09-02 | A kind of Electronic Paper perpetual calendar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420503089.9U CN204102474U (en) | 2014-09-02 | 2014-09-02 | A kind of Electronic Paper perpetual calendar |
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| CN204102474U true CN204102474U (en) | 2015-01-14 |
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| CN201420503089.9U Expired - Fee Related CN204102474U (en) | 2014-09-02 | 2014-09-02 | A kind of Electronic Paper perpetual calendar |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070186A (en) * | 2015-07-30 | 2015-11-18 | 湖南工业大学 | Electronic perpetual calendar based on single-chip microcomputer |
| CN105355172A (en) * | 2015-11-19 | 2016-02-24 | 无锡威峰科技有限公司 | Dot matrix and segment code two-in-one EPD display screen |
| CN106205415A (en) * | 2016-08-25 | 2016-12-07 | 长沙丰灼通讯科技有限公司 | Public transport stop board based on segment encode with the display combination of dot matrix electronic ink screen |
| CN109920382A (en) * | 2019-04-02 | 2019-06-21 | 电子科技大学中山学院 | Electrophoresis electronic paper driving device |
-
2014
- 2014-09-02 CN CN201420503089.9U patent/CN204102474U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070186A (en) * | 2015-07-30 | 2015-11-18 | 湖南工业大学 | Electronic perpetual calendar based on single-chip microcomputer |
| CN105355172A (en) * | 2015-11-19 | 2016-02-24 | 无锡威峰科技有限公司 | Dot matrix and segment code two-in-one EPD display screen |
| CN106205415A (en) * | 2016-08-25 | 2016-12-07 | 长沙丰灼通讯科技有限公司 | Public transport stop board based on segment encode with the display combination of dot matrix electronic ink screen |
| CN109920382A (en) * | 2019-04-02 | 2019-06-21 | 电子科技大学中山学院 | Electrophoresis electronic paper driving device |
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