CN207457753U - A kind of wireless remote timing control switch expanding unit - Google Patents
A kind of wireless remote timing control switch expanding unit Download PDFInfo
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- CN207457753U CN207457753U CN201721225708.2U CN201721225708U CN207457753U CN 207457753 U CN207457753 U CN 207457753U CN 201721225708 U CN201721225708 U CN 201721225708U CN 207457753 U CN207457753 U CN 207457753U
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Abstract
The utility model discloses a kind of wireless remote timing control switch expanding units, the expanding unit includes power supply supply input, AC/DC 12V power modules, DC6 ~ 28V direct current supplys input, DC12V merging power supply module, DC/DC 5V power modules, DC/DC 3.3V power modules, ARM CPU wireless telecommunications nucleus module, SMA antenna pedestals, RS232 communication interfaces, relay driving module, switching value module, RS485 communication modules, and totally 12 parts form.The instruction that the wireless remote timing control switch expanding unit receives wireless remote timing control switch host by wireless communication module can realize 8 Wireless remote controls for exchanging power supply and distribution contactor, or realize the wireless remote switch control of 8 miscellaneous equipments and device, and can realize the detection of 8 switch closed conditions；The expanding unit compact, at low cost simultaneously, it is easily installed in exchange power supply and distribution facility and other industrial control equipments, networking installation is carried out by wireless communication module, 16,32 even more exchange power supply and distribution contactors or other equipment and device can be controlled.
Description
Technical field
The utility model is related to Internet of Things, road lighting, industrial control field, especially a kind of wireless remote timing controlled
Switched diffusion device.
Background technology
In road lighting and industrial control field, there is substantial amounts of exchange power supply and distribution facility, these exchange power supply and distribution facilities
By the alternating current of input be powered circuit distribution, be powered to each loop load, each circuit manually or
Person's timer mode carries out circuit switching control power supply, and this kind of control mode needs manually to control or manually periodically adjustment
Time control, it is impossible to realize flexible remote automatic control.
Although having part of the manufacturer at present in order to realize automation control, power supply and distribution is carried out using PLC programmable controller and is returned
The automatic switch control on road, but PLC programmable controller circuit control driving force is smaller, it is necessary to external intermediate relay
Can realize high-power loop power supply contactor control driving, and programmable controller only provide Ethernet interface and
In addition RS232, RS485 communication interface can be compiled, it is necessary to external wireless telecommunications GPRS communicating interrupts could realize remote auto control
Range controller needs additional externally fed power module to supply power for, therefore realizes power supply and distribution circuit using programmable controller
The needs periphery automatically controlled provides various ancillary equipments and device, and Control System Design is complicated, wiring engineering amount is big, system is steady
It is qualitative it is not high, trouble point is more, can not realize remote control, can not realize more equipment room coordinated signals.
Current Ye You small parts producer targetedly devises integrated automatic control equipment, and exchange can be realized for matching somebody with somebody
The remote switch control of electric equipment, and it is defeated to be also integrated with loop current detection function, switching value, switching value in a device
Go out, the various functions such as remote meter reading, backup battery power supply, but these equipment are in order to pursue the large and complete of function, equipment volume
Greatly, manufacture is of high cost, and the feeder number of management is controlled to be fixed as 6 or 12, but in actual use, most friendship
Power supply and distribution facility is flowed in order to cost-effective, and cabinet design is all compact compact, and this one is installed without enough spaces
Change control device, and also do not used for other functions of these overall-in-one control schema equipment；Also the exchange of enormous amount is for matching somebody with somebody
Electric facility only has 2 ~ 4 power supply and distribution circuits, is wasted using integrated control device serious.
Utility model content
The utility model proposes a kind of wireless remote timing control switch expanding unit, which opens
Closing expanding unit can realize that 8 exchanges supply by the instruction of wireless communication module reception wireless remote timing control switch host
Wireless remote control or the control of the wireless remote switch of 8 miscellaneous equipments of realization and device with electric contactor, and can be real
The detection of existing 8 switch closed conditions；The expanding unit compact, at low cost simultaneously is easily installed in exchange power supply and distribution and sets
It applies in other industrial control equipments, networking installation is carried out by wireless communication module, 16,32 even more exchanges can be controlled
Power supply and distribution contactor or other equipment and device.
Technical solution is as follows used by the utility model：
A kind of wireless remote timing control switch expanding unit, the expanding unit include power supply supply input, AC/DC 12V
Power module, DC6 ~ 28V direct current supplys input, DC12V merge power supply module, DC/DC 5V power modules, DC/DC 3.3V electricity
Source module, ARM CPU wireless telecommunications nucleus module, SMA antenna pedestals, RS232 communication interfaces, relay driving module, switching value
Detection module, RS485 communication modules, totally 12 partly form, it is characterised in that：
The power supply supply input includes lightning protection and the anti-surge protection circuit of 2KV, to ensure that equipment is being struck by lightning
With the reliability Work under surge condition；
The DC12V power supplys that the AC power of input is converted to direct current by the AC/DC 12V power modules are powered to device；
The DC power supplier with higher lightning protection Anti-surging grade is selected in the direct current supply input of the DC6 ~ 28V；
The DC12V merges 2 that realize the power supply for exchanging input and direct current input of the real-time Hot Spare of power supply circuit
DC12V merges power supply；
The direct current DC12V power supplys that DC12V is merged power supply by the DC/DC 5V power modules are converted to DC5V power supplies, then
DC5V power supplys are converted to by direct current DC3.3V power supplies by DC/DC 3.3V power modules, realize switched diffusion device modules
Power supply；
The ARM CPU wireless telecommunications nucleus module has micro-power wireless communication interface, is connect by wireless communication interface
Various wireless telecommunications instruction is transmitted and received, the time switch in exchange power supply and distribution facility circuit is realized and instruction is opened the light control, realize it
The wireless remote switch of its equipment and device controls；
The SMA antenna pedestals include corresponding to high speed wireless communication SMA antenna pedestals, low-speed wireless communication SMA antenna pedestals respectively
2 SMA antenna pedestals；
The RS232 communication interfaces facilitate the fortune of construction personnel's debugging and test equipment for equipment in installation process
Row stability；
The relay driving module, the switch that No. 8 contactors are realized by I/O interface control, and realize exchange for matching somebody with somebody
The remote switch control in electric equipment circuit and the control of the remote switch of other equipment and device；
The switching value module can detect the switch closed condition of external No. 8 contactors, and connection exchange is for matching somebody with somebody
The auxiliary contact of the contactor of electric equipment detect the operating state of contactor；
The RS485 communication modules for connecting external various industrial control equipments, are realized logical with these equipment
News.
Preferably, the power supply supply input uses single-phase input, and the interface of ground wire G is stayed to facilitate equipment ground.
Preferably, the AC/DC 12V power modules use isolated power supply module, and single-phase input takes electricity, then connects fuse
Resistance and varistor do lightning protection.
Preferably, the input voltage range of DC6 ~ 28V direct current supplys input is 6V-28V.
Preferably, by D101, direct current input connects the DC12V that isolated power supply exports in the DC12V merging power supply module
Mouth is merged and is powered to DC12V rear ends by D104.
Preferably, after DC voltage is by C101 in the DC/DC 5V power modules, doing low frequency filtering reduces voltage line
Wave interference, C102, C103 capacitance make High frequency filter, export stable DC voltage, and voltage is inputted by BUCK chips MP1584
Output voltage is detected in end by chip FB pins, automatically adjusts internal duty cycle, the 5V DC voltages for making its output stable.
Preferably, 5V voltages are converted into 3.3V by XC6206 three-terminal voltage-stabilizing chips in the DC/DC 3.3V power modules
Voltage, C401, C402 are input 5V filtering, and C403, C404 are output 3.3V filtering, and LED401 is 3.3V power supply indicators.
Preferably, the ARM CPU wireless telecommunications nucleus module uses STM32F103RCT6 chips.
Preferably, the SMA antenna pedestals connect high speed wireless communication module and low-speed wireless communication module respectively.
Preferably, the RS232 communication interfaces use Pin to be connected to nucleus module away from the terminal for 5.08mm
UART1。
Preferably, the relay driving module, carrying out isolation control to triode using optocoupler makes relay primary line
It encloses both ends and generates voltage, the secondary conducting of last relay.
Preferably, the switching value module is judged by detecting K1_OUT, K2_OUT......K8_OUT level
The input state of switching value, level as turn on to be low, and level is shut-off for height.
The technical solution of the utility model, which can be obtained advantageous effect, to be included：It can realize 8 exchange power supply and distribution contacts
The Wireless remote control of device or the wireless remote switch control for realizing 8 miscellaneous equipments and device, and can realize that 8 are opened
Close the detection of conjunction state；The expanding unit compact, at low cost simultaneously is easily installed in exchange power supply and distribution facility and other
In industrial control equipment, networking installation is carried out by wireless communication module, 16,32 even more exchange power supply and distributions can be controlled to connect
Tentaculum or other equipment and device.
Description of the drawings
Fig. 1 is the theory of constitution figure of the wireless remote timing control switch expanding unit；
Fig. 2 is the circuit diagram of power supply supply input；
Fig. 3 is the circuit diagram of AC/DC 12V power modules；
Fig. 4 is the circuit diagram of DC6 ~ 28V direct current supplys input；
Fig. 5 is the circuit diagram that DC12V merges power supply；
Fig. 6 is the circuit diagram of DC/DC 5V power modules；
Fig. 7 is the circuit diagram of DC/DC 3.3V power modules；
Fig. 8 is the circuit diagram of ARM CPU wireless telecommunications nucleus modules；
Fig. 9 is the circuit diagram of RS232 communication interfaces；
Figure 10 is the circuit diagram of relay driving；
Figure 11 is the circuit diagram of switching value；
Figure 12 is the circuit diagram of RS485 communication modules.
Specific embodiment
In order to better illustrate the utility model, in conjunction with specific embodiment and Figure of description technical solution is made into
The explanation of one step.Although having recorded these specific embodiments in embodiment, so it is not limited to the utility model, appoints
What those of ordinary skill in the art, without departing from the spirit and scope of the utility model, when can make a little
It changes and retouches, therefore the scope of protection of the utility model is when subject to those as defined in claim.
The theory of constitution figure of the wireless remote timing control switch expanding unit is as shown in Figure 1.The expanding unit includes electricity
Source supply input, AC/DC 12V power modules, DC6 ~ 28V direct current supplys input, DC12V merge power supply, DC/DC 5V power supply moulds
Block, DC/DC 3.3V power modules, ARM CPU wireless telecommunications nucleus module, SMA antenna pedestals, RS232 communication interfaces, relay
Drive module, switching value module, RS485 communication modules, totally 12 partly form.
The power supply supply input of the utility model accesses the power supply of single-phase AC220V power supplys realization device, the utility model electricity
Lightning protection and anti-surge protection circuit of the supply input tool in source there are one 2KV, with ensure equipment be struck by lightning and surge condition under can
By sex work.The AC/DC 12V power modules of the utility model by the AC power of input be converted to the DC12V power supplys of direct current to
Device is powered.The utility model provides the direct current supply input of a 6 ~ 28V of DC, the nominal input electricity of direct current supply input
It presses as DC12V, when multiple wireless remote timing control switch expand stake device and cooperate, one can be provided by outside
The DC power supply of DC12V gives all wireless remote timing control switch expanding unit centrally connected power supplies, which can select
With the DC power supplier with higher lightning protection Anti-surging grade.The utility model is warm in real time by DC 12V merging power supply circuits
The power supply for realizing exchange input backed up and 2 DC 12V of direct current input, which merge, to power, can after Alternating Current Power Supply input fault
It can still realize that expanding unit is powered with direct current input.The DC/DC 5V power modules of the utility model, which merge DC 12V, to be supplied
The direct current DC 12V power supplys of electricity are converted to DC 5V power supplies, are then converted to DC 5V power supplys by DC/DC 3.3V power modules
Direct current DC 3.3V power, and realize the power supply of switched diffusion device modules.
The ARM CPU wireless telecommunications nucleus modules of the utility model are the core components of whole equipment, which has
There is micro-power wireless communication interface, there is ARM CPU calculation processing powers, it is various can transmission to be received by wireless communication interface
Wireless telecommunications instruct, and the calculation process of instruction is communicated wirelessly by ARM CPU processors, realize that exchange power supply and distribution facility returns
Time switch and the command switch control on road or the wireless remote switch control for realizing miscellaneous equipment and device；This practicality is new
Type can utilize the wireless communication interface in ARM CPU wireless telecommunications nucleus modules and the timing of wireless instructions and other wireless remotes
Control switched diffusion device communicate wirelessly collaborative work, realize multiple timing control switch expanding units synchro switch,
The control logic of the complexity such as sequence switch, the control instruction for also receiving wireless remote timing control switch host realize long-range open
Close control.
The utility model in order to adapt to a variety of different wireless communication platforms, devise 2 SMA antenna pedestals, point
High speed wireless communication SMA antenna pedestals, low-speed wireless communication SMA antenna pedestals are not corresponded to, and by this 2 SMA antenna pedestals, this practicality is new
The wireless remote timing control switch expanding unit of type can utilize the high level matches with low level that high speed wireless communication and low-speed wireless communicate,
It realizes the wireless networking communication of 0 meter ~ 4500 meters distance ranges, realizes the wireless networking of modules inside exchange power supply and distribution facility
Communication, while can also realize the wireless networking of exchange power supply and distribution facility of multiple distances in 4500 meters, it may finally realize
Using wireless communication module realize the remote switch control of numerous exchange power supply and distribution facilities and its internal module, Remote configuration and
Management.
The RS232 communication interfaces of the utility model facilitate construction personnel's debugging and test to set for equipment in installation process
Standby operation stability, what guarantee system was implemented is smoothed out.
The utility model realizes the driving of No. 8 relays by I/O interface, it is achieved thereby that the switch control of No. 8 contactors
System realizes the remote switch control in exchange power supplying and distributing equipment circuit and the control of the remote switch of other equipment and device.
The utility model realizes the switching quantity detection circuit on 8 tunnels by I/O interface, can detect external No. 8 contactors
Switch closed condition, the auxiliary contact of the contactor of connection exchange power supplying and distributing equipment detect the operating state of contactor；Or
The other equipment working states of detection.
A RS485 communication module has also been devised in the utility model, which can be connected by RS485 communication buses
External various industrial control equipments are connect, realize the communication with these equipment, especially by RS485 buses and with RS485
The ammeter of communication interface is communicated, and realizes the remote meter-reading function of the power consumption of exchange power supply and distribution facility, the utility model is not
The wireless remote timing control switch of the current supply circuit of Alternating Current Power Supply facility can only be completed, additionally it is possible to complete the metering of power consumption
Remote meter reading.
Fig. 2 is the circuit diagram of power supply supply input.Power supply supply input uses single-phase input, stays the interface of ground wire G
Facilitate equipment ground.
Fig. 3 is the circuit diagram of AC/DC 12V power modules.AC turns DC power supply using isolated power supply module, single-phase defeated
Enter and take electricity, then connect fuse resistance and varistor does lightning protection, principle be when there is lightning induced surge to enter input terminal,
It first passes through resistance fuse and does first order absorption, then by varistor TVR10471, varistor internal resistance is drastically under high pressure
Decline simultaneously turns on rapidly, lightning stroke transient energy of releasing, and Circuit theory lightning protection grade is：Line To Line 2KV, 2KV, isolation are electric over the ground for line
Source module uses the flyback schemes of transformer isolation.
Fig. 4 is the circuit diagram of DC6 ~ 28V direct current supplys input.Direct current input interface, input voltage range 6V-
28V facilitates equipment when using indoors suitable regulated power supply can be selected to work.
Fig. 5 is the circuit diagram that DC12V merges power supply.The 12V of isolated power supply output passes through D101, direct current input interface
By D104, merge and power to DC12V rear ends.
Fig. 6 is the circuit diagram of DC/DC 5V power modules.After DC voltage is by C101, doing low frequency filtering reduces electricity
Wave interference is embossed, C102, C103 capacitance make High frequency filter, export stable DC voltage, and voltage is defeated by BUCK chips MP1584
Enter end, output voltage is detected by chip FB pins, automatically adjust internal duty cycle, the 5V DC voltages for making its output stable.
Fig. 7 is the circuit diagram of DC/DC 3.3V power modules.5V voltages are converted by XC6206 three-terminal voltage-stabilizings chip
Into 3.3V voltages, C401, C402 are input 5V filtering, and C403, C404 are output 3.3V filtering, and LED401 is 3.3V power supply instructions
Lamp.
Fig. 8 is the circuit diagram of ARM CPU wireless telecommunications nucleus modules.Inside ARM CPU wireless telecommunications nucleus modules
It is made of following chip and module：
1）CPU processor is model STM32F103RCT6, memory capacity 256KB, the SRAM 48KB of ST, maximum
Speed can reach 72M；
2）Spread F LASH memories are M25P32, inside save as 32M, pass through spi bus and CPU SPI interface connection communications；
3）The Transistor-Transistor Logic level of CPU is converted into 232 level by inside modules by SP232 chips, is provided out 2 tunnel, 232 interface；
4）Inside modules carry high speed wireless communication module and low-speed wireless communication module, independently wireless module can be selected to lead to
News, can also Dual module work at the same time, compatibility is strong, long transmission distance.
The circuit of SMA antenna pedestals（It is not shown）Middle nucleus module uses Dual module, and two SMA antenna pedestals connect at a high speed respectively
Wireless communication module and low-speed wireless communication module.
Fig. 9 is the circuit diagram of RS232 communication interfaces.RS232 interface uses Pin away from the terminal for 5.08mm, connection
To the UART1 of nucleus module.
Figure 10 is the circuit diagram of relay driving.Control relay circuit isolates triode using optocoupler
Control makes relay primary coil both ends generate voltage, the secondary conducting of last relay, and three contacts of relay secondary are respectively
RL1_CO（It is public）、RL1_NC（It is normally closed）、RL1_NO（It is normally opened）Initial default is normally closed, i.e., 6,4 turn on 3 feet, work as ST_K_O1
During input high level, the secondary conducting of optocoupler is driven, Q201 conductings by the voltage for pulling up DC12V, the primary coil of relay with
DC12V simultaneously connects, and relay switch is overturn, and 6,4 feet are turned on 5 feet, and 3 feet are hanging, and the circuit being connected with 6,4 feet disconnects.Its
His seven relay drive circuit principles with it is consistent above.
Figure 11 is the circuit diagram of switching value.Under default conditions, K1_IN is not turned on without On-off signal, optocoupler
K1_OUT exports high level, but has On-off signal, and optocoupler conducting, K1_OUT is pulled low, and exports low level, core board AC_
CHECK_O1 is connected to K1_OUT by analog switch, detects K1_OUT level to judge the input state of switching value.Level is
Low is to turn on, and level as turns off to be high.Other seven way switch amount detection circuit principles are consistent with the above.
Figure 12 is the circuit diagram of RS485 communication modules.Core board USART4 is connect by 485 chip U601, output 485
Mouthful, conversion communication is carried out, R604 is 120R resistance primarily to the transmission resistance of matching twisted-pair feeder, reduces the anti-of transmission signal
It penetrates, R605, R606 make pull-up pull down resistor, are effectively reduced the bit error rate, D601, D602, D603 are TVS pipe, for doing wink
Between absorb use, prevent the interference of electrostatic, surge voltage to chip, GDT601 is anti-thunder tube, in normal operation be shut-off,
When there is instantaneous pressure to come, lightning protection light is breakdown, by arc discharge voltage is prevented further to rise, after being effectively protected
Terminal circuit element does lightning protection use, and PPT601, PPT602 are resettable fuse, have high current or short circuit in output terminal
In the case of, chip is protected not to be damaged, the Enable Pin of chip employs level shifting circuit, when core board is sending data
When, USART4_TTL_TX is high level, is low level by level translation circuit Enable Pin, otherwise receive data, Enable Pin
For high level.
The scope of protection of the utility model is not limited to the above embodiments, it is clear that those skilled in the art can be right
The present invention carries out various changes and deformation without departing from scope and spirit of the present invention.If these changes and deformation belong to this reality
In the range of new claim and its equivalent technologies, then the intention of the utility model also comprising these changes and deforms
It is interior.
Claims (10)
1. a kind of wireless remote timing control switch expanding unit, which includes power supply supply input, AC/DC 12V electricity
Source module, DC6 ~ 28V direct current supplys input, DC12V merge power supply module, DC/DC 5V power modules, DC/DC 3.3V power supplys
Module, ARM CPU wireless telecommunications nucleus module, SMA antenna pedestals, RS232 communication interfaces, relay driving module, switching value inspection
Module, RS485 communication modules are surveyed, totally 12 parts form, it is characterised in that：
The power supply supply input includes lightning protection and the anti-surge protection circuit of 2KV, to ensure equipment in lightning stroke and wave
Reliability Work under the conditions of gushing；
The DC12V power supplys that the AC power of input is converted to direct current by the AC/DC 12V power modules are powered to device；
The DC power supplier with higher lightning protection Anti-surging grade is selected in the direct current supply input of the DC6 ~ 28V；
The DC12V merges 2 DC12V of the power supply for realizing exchange input and the direct current input of the real-time Hot Spare of power supply circuit
Merge power supply；
The direct current DC12V power supplys that DC12V is merged power supply by the DC/DC 5V power modules are converted to DC5V power supplies, then pass through
DC5V power supplys are converted to direct current DC3.3V power supplies by DC/DC 3.3V power modules, realize the confession of switched diffusion device modules
Electricity；
The ARM CPU wireless telecommunications nucleus module has micro-power wireless communication interface, is received and sent out by wireless communication interface
Various wireless telecommunications is sent to instruct, the time switch in exchange power supply and distribution facility circuit is realized and instruction is opened the light control, realization is other to be set
Standby and device wireless remote switch controls；
The SMA antenna pedestals including corresponding to high speed wireless communication SMA antenna pedestals respectively, low-speed wireless communicates 2 of SMA antenna pedestals
SMA antenna pedestals；
The SMA antenna pedestals connect respectively high speed wireless communication module in ARM CPU wireless telecommunications nucleus modules and low speed without
Line communication module；
The RS232 communication interfaces facilitate construction personnel's debugging and the operation of test equipment steady for equipment in installation process
It is qualitative；
The relay driving module, the switch that No. 8 contactors are realized by I/O interface control, and realize exchange power supply and distribution and set
The remote switch control in standby circuit and the control of the remote switch of other equipment and device；
The switching value module, can detect the switch closed condition of external No. 8 contactors, and connection exchange power supply and distribution is set
The auxiliary contact of standby contactor detect the operating state of contactor；
The RS485 communication modules for connecting external various industrial control equipments, realize the communication with these equipment.
2. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：The power supply power supply
Input stays the interface of ground wire G to facilitate equipment ground using single-phase input.
3. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：The AC/DC
12V power modules use isolated power supply module, and single-phase input takes electricity, then connect fuse resistance and varistor does lightning protection.
4. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：DC6 ~ the 28V
The input voltage range of direct current supply input is 6V-28V.
5. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：The DC12V is closed
And the DC12V that isolated power supply exports in power supply module, by D101, direct current input interface merges by D104 and gives DC12V rear ends
Power supply.
6. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：The DC/DC 5V
After DC voltage is by C101 in power module, doing low frequency filtering reduces voltage ripple interference, and C102, C103 capacitance make high frequency
Filtering exports stable DC voltage, and voltage passes through BUCK chip MP1584 input terminals, and output electricity is detected by chip FB pins
Pressure automatically adjusts internal duty cycle, the 5V DC voltages for making its output stable.
7. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：The DC/DC
5V voltages are converted into 3.3V voltages by XC6206 three-terminal voltage-stabilizing chips in 3.3V power modules, and C401, C402 are input 5V filters
Ripple, C403, C404 are output 3.3V filtering, and LED401 is 3.3V power supply indicators.
8. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：The ARM CPU
Wireless telecommunications nucleus module uses STM32F103RCT6 chips.
9. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：The relay drives
Dynamic model block, carrying out isolation control to triode using optocoupler makes relay primary coil both ends generate voltage, last relay
Grade conducting.
10. wireless remote timing control switch expanding unit according to claim 1, it is characterised in that：The switching value
Detection module is by detecting K1_OUT, K2_OUT ... K8_OUT level judges the input state of switching value, level for it is low i.e.
For conducting, level as turns off to be high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225708.2U CN207457753U (en) | 2017-09-22 | 2017-09-22 | A kind of wireless remote timing control switch expanding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225708.2U CN207457753U (en) | 2017-09-22 | 2017-09-22 | A kind of wireless remote timing control switch expanding unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207457753U true CN207457753U (en) | 2018-06-05 |
Family
ID=62283900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721225708.2U Active CN207457753U (en) | 2017-09-22 | 2017-09-22 | A kind of wireless remote timing control switch expanding unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN207457753U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962663A (en) * | 2019-12-13 | 2020-04-07 | 山东电工电气集团新能科技有限公司 | One-inlet four-outlet switch module device for power distribution of direct current charging pile and control method |
| CN114898639A (en) * | 2022-05-06 | 2022-08-12 | 南京红松信息技术有限公司 | College experiment box with automatic judging function and college experiment method |
-
2017
- 2017-09-22 CN CN201721225708.2U patent/CN207457753U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962663A (en) * | 2019-12-13 | 2020-04-07 | 山东电工电气集团新能科技有限公司 | One-inlet four-outlet switch module device for power distribution of direct current charging pile and control method |
| CN114898639A (en) * | 2022-05-06 | 2022-08-12 | 南京红松信息技术有限公司 | College experiment box with automatic judging function and college experiment method |
| CN114898639B (en) * | 2022-05-06 | 2024-05-03 | 南京红松信息技术有限公司 | College experiment box with automatic judging function and method |
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