CN107278075A - A kind of Internet of Things DTU boxes - Google Patents
A kind of Internet of Things DTU boxes Download PDFInfo
- Publication number
- CN107278075A CN107278075A CN201710647982.7A CN201710647982A CN107278075A CN 107278075 A CN107278075 A CN 107278075A CN 201710647982 A CN201710647982 A CN 201710647982A CN 107278075 A CN107278075 A CN 107278075A
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- electric capacity
- fixed
- lower side
- plate
- epipleural
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of Internet of Things DTU boxes, including upper lid, lower cover, terminal mouthful, plate body, power module, low-power dissipation power supply handover module, serial port level conversion module, the lower cover is by bottom plate, first lower side panel, second lower side panel, 3rd lower side panel is constituted, it is described upper to cover on lower lid, upper lid is by top plate, first epipleural, second epipleural, fixed plate is constituted, the plate body is fixed in fixed column, some connection terminals being engaged with terminal mouth are fixed with plate body, the power module being sequentially connected is fixed with plate body, low-power dissipation power supply handover module, serial port level conversion module.The present invention by the way that fixed column is fixed on bottom plate, can more preferable fixed plate body, it is easy to use.
Description
【Technical field】
The present invention relates to the technical field of the technical field of Internet of Things, particularly DTU iron-clads.
【Background technology】
Internet of Things is a kind of emerging concept, to realize that Internet of Things needs substantial amounts of data to be supported, this can not just keep away
Various data receivers, transmission, Treatment Analysis module the need for exempting from, these modules are often inside a shell.It is existing
Shell is not ideal enough, it is impossible to meet require well.
【The content of the invention】
The purpose of the present invention is exactly to solve the problems of the prior art, proposes a kind of Internet of Things DTU boxes, can make DTU
Can meet demand well.
To achieve the above object, the present invention proposes a kind of Internet of Things DTU boxes, including upper lid, lower cover, terminal mouth, plate
Body, power module, low-power dissipation power supply handover module, serial port level conversion module, the lower cover is by bottom plate, the first lower side panel,
Two lower side panels, the 3rd lower side panel composition, the bottom plate are rectangle, and plate upper surface is provided with some fixed columns, the bottom plate
One piece of first lower side panel is fixed with one short side, the first lower side panel is provided with some terminals mouthful, two long sides of the bottom plate
Side is equipped with some second lower side panels and some 3rd lower side panels, and the second lower side panel is provided with the first fixing hole, the upper lid lid
On lower lid, upper lid is made up of top plate, the first epipleural, the second epipleural, fixed plate, and the top plate is rectangle, on top plate
Provided with some terminals mouthful, one piece of first epipleural is fixed with a short side of the top plate, the first epipleural is provided with some
Terminal mouthful, the first epipleural and the first lower side panel are located at the not homonymy of bottom plate, and two long sides of the top plate are equipped with one piece
Second epipleural, the second epipleural is provided with the second fixing hole being engaged with the first fixing hole, and the second epipleural bottom is fixed
There is fixed plate, fixed plate is provided with some main fixing holes, and the plate body is fixed in fixed column, be fixed with plate body some with holding
The power module being sequentially connected, low-power dissipation power supply handover module, serial port power are fixed with the connection terminal that rim of the mouth is engaged, plate body
Flat modular converter, No. 1 pin that the power module includes synchronous rectification adjuster a MP2303A, the MP2303A connects
The first annular circuit constituted is sequentially connected by diode D2, inductance L1 and electric capacity C2 by one, No. 1 pin with it is first annular
The tie point of circuit is located between D2 and C2, and D2 positive pole is connected with L1, and No. 2 pins of the MP2303A are with diode D1's
Negative pole, voltage-regulator diode Z1 negative pole, resistance R4, electric capacity C1, C5, C6 are joined directly together, and described C1, C5, C6 and Z1 positive pole are equal
Ground connection, D1 positive pole is connected with bidirectional port, and No. 3 pins of the MP2303A are connected with first annular circuit, No. 3 pins and the
The tie point of one loop circuit is located between L1 and C2, and No. 4 pins ground connection of the MP2303A, No. 5 of the MP2303A connect
Pin is joined directly together with resistance R1, R2, R2 ground connection, and R1 is connected with output end, output end also with first annular circuit, electric capacity C7, C8
It is joined directly together, the tie point of output end and first annular circuit is located between L1 and D2, and C7, C8 are grounded, the MP2303A's
No. 6 pins are connected with electric capacity C4, and the C4 other ends are connected with the resistance R3, the MP2303A of a ground connection No. 7 pins and resistance
R4, R5 are joined directly together, and R5 ground connection, No. 8 pins of the MP2303A are connected with the electric capacity C3 of a ground connection, the low-power dissipation power supply
Base stage of the handover module comprising triode a Q1, Q1 is connected with signal opening end GPIOEN, Q1 emitter stage and low-power consumption electricity
Source VBAT1 is connected, and Q1 colelctor electrode and external power source, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, electric capacity C15 is direct
It is connected, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, electric capacity C15 are grounded, and the serial port level conversion module is connected with
VCC1 systems and VCC2 systems, the VCC2 systems are joined directly together with resistance R21, R22, resistance R21 and electric capacity C21, diode
D21 positive pole, the first receiving terminal RXD1 are joined directly together, C21 ground connection, and D21 negative pole is connected with the second transmitting terminal TXD2, R22 and
Electric capacity C22, triode Q2 base stage are joined directly together, C22 ground connection, and Q2 emitter stage is connected with the first transmitting terminal TXD1, described
VCC1 systems are connected with resistance R23, and R23 and Q2 colelctor electrode, the second receiving terminal RXD2 are joined directly together
Preferably, first lower side panel, the second lower side panel, the 3rd lower side panel are respectively positioned on the upper surface of bottom plate, first
Epipleural, the second epipleural are respectively positioned on the lower surface of top plate.
Preferably, the terminal mouthful on first lower side panel, the first epipleural, top plate is circular or rectangle, it is different
Terminal mouthful size shape can differ.
Preferably, the fixed plate is provided with a bayonet socket, bayonet socket is in Pear-Shaped.
Preferably, described electric capacity C1, C6, C7, C14, C15 are electrochemical capacitor.
Preferably, the output end voltage in the power module is OUTPUT=R1+R2/R2*0.8V.
Preferably, the VCC1 level is consistently greater than VCC2 level.
Beneficial effects of the present invention：The present invention by the way that fixed column is fixed on bottom plate, can more preferable fixed plate body, use
It is convenient；The setting of first fixing hole and the second fixing hole causes lid and lower cover to be more prone to positioning；Voltage-regulator diode Z1 is set
On power module so that protection circuit becomes relatively easy, it is possible to decrease cost reduces volume；Low-power dissipation power supply handover module
Setting can automatically switch low-power consumption mode when external power source is disappeared, the mould such as machine power consumption is less, can control to discharge, charge
Formula；Serial port level conversion module can configure the serial communication for realizing varying level by circuit.
The feature and advantage of the present invention will be described in detail by embodiment combination accompanying drawing.
【Brief description of the drawings】
Fig. 1 is a kind of front view of Internet of Things DTU boxes of the invention；
Fig. 2 is a kind of broken away view of Internet of Things DTU boxes of the invention；
Fig. 3 is a kind of plate body schematic diagram of Internet of Things DTU boxes of the invention；
Fig. 4 is a kind of power module circuitry figure of Internet of Things DTU boxes of the invention；
Fig. 5 is a kind of low-power dissipation power supply handover module circuit diagram of Internet of Things DTU boxes of the invention；
Fig. 6 is a kind of serial port level conversion module circuit diagram of Internet of Things DTU boxes of the invention.
In figure：1- bottom plates, 2- top plates, 3- plate bodys, 4- power modules, 5- low-power dissipation power supplies handover module, 6- serial ports level
Modular converter, the lower side panels of 11- first, the lower side panels of 12- second, the lower side panels of 13- the 3rd, the fixing holes of 15- first, 19- fixed columns,
20- terminals mouth, the epipleurals of 21- first, the epipleurals of 22- second, 23- fixed plates, the fixing holes of 25- second, the main fixing holes of 16-, 17-
Bayonet socket.
【Embodiment】
Refering to Fig. 1-6, a kind of Internet of Things DTU boxes of the invention, including upper lid, lower cover, terminal mouth 20, plate body 3, power supply mould
Block, low-power dissipation power supply handover module, serial port level conversion module, the lower cover is by bottom plate 1, first the 11, second downside of lower side panel
Plate 12, the 3rd lower side panel 13 are constituted, and the bottom plate 1 is rectangle, and the upper surface of bottom plate 1 is provided with some fixed columns 19, the bottom plate 1
A short side on be fixed with one piece of first lower side panel 11, the first lower side panel 11 provided with some terminals mouthful 20, the bottom plate 1
Two long sides are equipped with some second lower side panels 12 and some 3rd lower side panels 13, and the second lower side panel 12 is fixed provided with first
Hole 15, it is described it is upper cover on lower lid, upper lid is made up of top plate 2, the first epipleural 21, the second epipleural 22, fixed plate 23, institute
State top plate 2 to be rectangle, top plate 2 is provided with some terminals mouthful 20, a short side of the top plate 2 and is fixed with one piece first
Side plate 21, the first epipleural 21 is located at bottom plate 1 not provided with some terminals mouthful 20, the first epipleural 21 and the first lower side panel 11
Homonymy, two long sides of the top plate 2 are equipped with one piece of second epipleural 22, and the second epipleural 22 is provided with to be fixed with first
The second fixing hole 25 that hole 15 is engaged, the bottom of the second epipleural 22 is fixed with fixed plate 23, and fixed plate 23 is provided with some masters
Fixing hole 16, the plate body 3 is fixed in fixed column 19, and some connection ends being engaged with terminal mouthful 20 are fixed with plate body 3
The power module 4 being sequentially connected, low-power dissipation power supply handover module 5, serial port level conversion module 6, institute are fixed with son, plate body 3
State power module 4 and include synchronous rectification adjuster a MP2303A, the MP2303A No. 1 pin and be connected with one by two poles
Pipe D2, inductance L1 and electric capacity C2 are sequentially connected the first annular circuit constituted, the tie point of No. 1 pin and first annular circuit
Between D2 and C2, D2 positive pole is connected with L1, No. 2 pins of the MP2303A and diode D1 negative pole, the pole of voltage stabilizing two
Pipe Z1 negative pole, resistance R4, electric capacity C1, C5, C6 is joined directly together, and described C1, C5, C6 and Z1 positive pole are grounded, D1 positive pole
Bidirectional port is connected with, No. 3 pins of the MP2303A are connected with first annular circuit, the company of No. 3 pins and first annular circuit
Contact is located between L1 and C2, and No. 4 pins ground connection of the MP2303A, No. 5 pins and resistance R1, R2 of the MP2303A are straight
Connect connected, R2 ground connection, R1 is connected with output end, and output end is also joined directly together with first annular circuit, electric capacity C7, C8, output end
It is located at the tie point of first annular circuit between L1 and D2, C7, C8 are grounded, No. 6 pins and the electric capacity C4 of the MP2303A
It is connected, No. 7 pins that the C4 other ends are connected with the resistance R3, the MP2303A of a ground connection are joined directly together with resistance R4, R5, R5
Ground connection, No. 8 pins of the MP2303A are connected with the electric capacity C3 of a ground connection, and the low-power dissipation power supply handover module 5 includes one
Triode Q1, Q1 base stage are connected with signal opening end GPIOEN, and Q1 emitter stage is connected with low-power dissipation power supply VBAT1, Q1's
Colelctor electrode is joined directly together with external power source, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, electric capacity C15, electric capacity C11, electric capacity
C12, electric capacity C13, electric capacity C14, electric capacity C15 are grounded, and the serial port level conversion module 6 is connected with VCC1 systems and VCC2 systems
System, the VCC2 systems are joined directly together with resistance R21, R22, and resistance R21 and electric capacity C21, diode D21 positive pole, first connect
Receiving end RXD1 is joined directly together, and C21 ground connection, D21 negative pole is connected with the second transmitting terminal TXD2, R22 and electric capacity C22, triode Q2
Base stage be joined directly together, C22 ground connection, Q2 emitter stage is connected with the first transmitting terminal TXD1, the VCC1 systems and resistance R23 phases
Even, R23 and Q2 colelctor electrode, the second receiving terminal RXD2 are joined directly together, first lower side panel 11, the second lower side panel the 12, the 3rd
Lower side panel 13 is respectively positioned on the upper surface of bottom plate 1, and the first epipleural 21, the second epipleural 22 are respectively positioned on the lower surface of top plate 2, described
First lower side panel 11, the first epipleural 21, the terminal mouthful 20 on top plate 2 are circular or rectangle, different 20 sizes of terminal mouthful
Shape can be differed, and the fixed plate 23 is provided with bayonet socket 17, and bayonet socket 17 is in Pear-Shaped, the electric capacity C1, C6, C7,
C14, C15 are electrochemical capacitor, and the output end voltage in the power module is OUTPUT=R1+R2/R2*0.8V, described
VCC1 level is consistently greater than VCC2 level.
The course of work of the present invention：
With DTU boxes in the course of the work, when power module 4 works, INPUT inputs 4.7V-28V to a kind of Internet of Things of the present invention
DC voltage, D1 rectifications obtain supply voltage, Z1 overvoltage protection voltage-stabiliser tubes, when voltage exceedes the threshold values of voltage-stabiliser tube, by its electricity
Pressure is stable in threshold values, protects circuit below.C1, C5, C6 electric capacity, direct current is filtered, energy storage.Chip is started working, this
When C3 effect be set a 15MS soft-start period.MP2303A three pin filter output voltage by L1 inductive energy storages
Ripple ensure that the continuity of output current, and the voltage of last L1 outputs carries out energy storage by C7, C8, filtered for external system.
OUTPUT voltage OUTPUT=(R1+R2)/R2*0.8V can be set by adjusting R1, R2, can be set by adjusting R4, R5
Under-voltage protection is put, when enabling voltage V=VCC/ (R4+R5) * R5 ＜ 1.3V, Switching Power Supply is stopped；Low-power dissipation power supply is cut
When changing the mold the work of block 5, when there is external power source to power, externally fed VCC gives C11-C15 electric capacity to charge and filtered, GPIOEN level
It is changed into low level, Q1 conductings, VCC while being charged to VBAT1, while being charged to low-power chip, works as externally fed
During stopping, externally fed VCC disappears, and GPIOEN level disappears, and now Q1 ends, and VBAT1 powers to low-power chip, but not right
Other system power supply, low-power chip detection GPIOEN blackouts, beginning is standby, into low-power consumption mode；Serial port power flat turn
When changing the mold the work of block 6, when VCC2 systems send data to VCC1 systems, data transfer to RXD2 is sent high electricity by TXD1
Usually TXD is high level both VCC2, and now due to triode Q1 VBE=0 ＜ 0.4V, triode is not turned on, TXD2 voltage
=VCC1 upper pull-up voltage, TXD is low level both GND when sending low level, now due to triode Q1 VBE=＞ 0.4V,
Triode ON, RXD2 voltages=VCC1-VCE saturation voltage drop 0.4V ≈ TXD voltage, when VCC1 systems are sent data to
During VCC2 systems, TXD2 is data transfer to RXD1, and TXD2 is high level both VCC when sending high level, due to VCC1 ＞
VCC2, diode reverse is ended, now RXD voltage=R1 upper pull-up voltage VCC2, and TXD2 is low level when sending low level
Both GND, now VCC1 → R1 → D1 formation loop, RXD voltage=VCC, the conduction voltage drop ≈ GND of diode.
Above-described embodiment is the description of the invention, is not limitation of the invention, it is any to simple transformation of the present invention after
Scheme belong to protection scope of the present invention.
Claims (7)
1. a kind of Internet of Things DTU boxes, it is characterised in that：Including upper lid, lower cover, terminal mouthful (20), plate body (3), power module,
Low-power dissipation power supply handover module, serial port level conversion module, the lower cover is by bottom plate (1), the first lower side panel (11), the second downside
Plate (12), the 3rd lower side panel (13) composition, the bottom plate (1) are rectangle, and bottom plate (1) upper surface is provided with some fixed columns
(19) one piece of first lower side panel (11), is fixed with a short side of the bottom plate (1), the first lower side panel (11) is provided with some
Terminal mouthful (20), two long sides of the bottom plate (1) are equipped with some second lower side panels (12) and some 3rd lower side panels
(13), the second lower side panel (12) be provided with the first fixing hole (15), it is described it is upper cover on lower lid, it is upper cover by top plate (2), first
Epipleural (21), the second epipleural (22), fixed plate (23) composition, the top plate (2) are rectangle, and top plate (2) is if be provided with
It is fixed with dry end rim of the mouth (20), a short side of the top plate (2) on one piece of first epipleural (21), the first epipleural (21)
Provided with some terminals mouthful (20), the first epipleural (21) is located at the not homonymy of bottom plate (1), the top plate with the first lower side panel (11)
(2) two long sides are equipped with one piece of second epipleural (22), and the second epipleural (22) is provided with and the first fixing hole (15)
The second fixing hole (25) being engaged, the second epipleural (22) bottom is fixed with fixed plate (23), fixed plate (23) if being provided with
Main fixing hole (16) is done, the plate body (3) is fixed in fixed column (19), some and terminal mouthful (20) is fixed with plate body (3)
Be fixed with the connection terminal being engaged, plate body (3) power module (4) being sequentially connected, low-power dissipation power supply handover module (5),
Serial port level conversion module (6), the power module (4) includes a synchronous rectification adjuster MP2303A, described
MP2303A No. 1 pin is connected with one and is sequentially connected the first annular electricity constituted by diode D2, inductance L1 and electric capacity C2
The tie point of road, No. 1 pin and first annular circuit is located between D2 and C2, and D2 positive pole is connected with L1, the MP2303A's
No. 2 pins are joined directly together with diode D1 negative pole, voltage-regulator diode Z1 negative pole, resistance R4, electric capacity C1, C5, C6, described
C1, C5, C6 and Z1 positive pole are grounded, and D1 positive pole is connected with bidirectional port, No. 3 pins of the MP2303A with it is first annular
Circuit is connected, and the tie point of No. 3 pins and first annular circuit is located between L1 and C2, and No. 4 pins of the MP2303A connect
Ground, No. 5 pins and resistance R1, R2 of the MP2303A are joined directly together, R2 ground connection, and R1 is connected with output end, and output end is also with the
One loop circuit, electric capacity C7, C8 are joined directly together, and the tie point of output end and first annular circuit is located between L1 and D2, C7, C8
It is grounded, No. 6 pins of the MP2303A are connected with electric capacity C4, the C4 other ends are connected with the resistance R3 of a ground connection, described
MP2303A No. 7 pins and resistance R4, R5 is joined directly together, R5 ground connection, and No. 8 pins of the MP2303A are connected with ground connection
Electric capacity C3, the low-power dissipation power supply handover module (5) includes triode a Q1, Q1 base stage and signal opening end GPIOEN phases
Even, Q1 emitter stage is connected with low-power dissipation power supply VBAT1, Q1 colelctor electrode and external power source, electric capacity C11, electric capacity C12, electric capacity
C13, electric capacity C14, electric capacity C15 are joined directly together, and electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, electric capacity C15 are grounded, institute
State serial port level conversion module (6) and be connected with VCC1 systems and VCC2 systems, the VCC2 systems and the direct phase of resistance R21, R22
Even, resistance R21 and electric capacity C21, diode D21 positive pole, the first receiving terminal RXD1 are joined directly together, C21 ground connection, D21 negative pole
Be connected with the second transmitting terminal TXD2, R22 and electric capacity C22, triode Q2 base stage are joined directly together, C22 ground connection, Q2 emitter stage with
First transmitting terminal TXD1 is connected, and the VCC1 systems are connected with resistance R23, and R23 and Q2 colelctor electrode, the second receiving terminal RXD2 are straight
Connect connected.
2. a kind of Internet of Things DTU boxes as claimed in claim 1, it is characterised in that：Under first lower side panel (11), second
Side plate (12), the 3rd lower side panel (13) are respectively positioned on the upper surface of bottom plate (1), and the first epipleural (21), the second epipleural (22) are
Lower surface positioned at top plate (2).
3. a kind of Internet of Things DTU boxes as claimed in claim 1, it is characterised in that：First lower side panel (11), on first
Terminal mouthful (20) on side plate (21), top plate (2) is circular or rectangle, and different terminal mouthful (20) size shapes can not phase
Together.
4. a kind of Internet of Things DTU boxes as claimed in claim 1, it is characterised in that：The fixed plate (23) is provided with one
Bayonet socket (17), bayonet socket (17) is in Pear-Shaped.
5. a kind of Internet of Things DTU boxes as claimed in claim 1, it is characterised in that：Described electric capacity C1, C6, C7, C14, C15
It is electrochemical capacitor.
6. a kind of Internet of Things DTU boxes as claimed in claim 1, it is characterised in that：Output end electricity in the power module
Press as OUTPUT=R1+R2/R2*0.8V.
7. a kind of Internet of Things DTU boxes as claimed in claim 1, it is characterised in that：The VCC1 level is consistently greater than VCC2
Level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647982.7A CN107278075B (en) | 2017-08-01 | 2017-08-01 | DTU box for Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710647982.7A CN107278075B (en) | 2017-08-01 | 2017-08-01 | DTU box for Internet of things |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107278075A true CN107278075A (en) | 2017-10-20 |
| CN107278075B CN107278075B (en) | 2022-10-18 |
Family
ID=60075528
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710647982.7A Active CN107278075B (en) | 2017-08-01 | 2017-08-01 | DTU box for Internet of things |
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| Country | Link |
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| CN (1) | CN107278075B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108443554A (en) * | 2018-03-27 | 2018-08-24 | 浙江佳乐科仪股份有限公司 | A kind of valve operation manipulator |
| CN113645786A (en) * | 2021-08-10 | 2021-11-12 | 上海顺诠科技有限公司 | Intelligent network card shell |
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| Publication number | Publication date |
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| CN107278075B (en) | 2022-10-18 |
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Address after: 314300 No. 1070 Lane 88 Yanbei West Road, Wuyuan Street, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: ZHEJIANG JAROL SCIENTIFIC INSTRUMENT Co.,Ltd. Address before: 314300 Guyuan Village, Haiyan County, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG JAROL SCIENTIFIC INSTRUMENT Co.,Ltd. |
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Application publication date: 20171020 Assignee: Jiaxing Leying New Energy Co.,Ltd. Assignor: ZHEJIANG JAROL SCIENTIFIC INSTRUMENT Co.,Ltd. Contract record no.: X2023330000367 Denomination of invention: A DTU box for the Internet of Things Granted publication date: 20221018 License type: Common License Record date: 20230630 |
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Application publication date: 20171020 Assignee: Jiaxing Leyao New Energy Co.,Ltd. Assignor: ZHEJIANG JAROL SCIENTIFIC INSTRUMENT Co.,Ltd. Contract record no.: X2023330000384 Denomination of invention: A DTU box for the Internet of Things Granted publication date: 20221018 License type: Common License Record date: 20230712 |