CN209297488U - Automatic control circuit and control device - Google Patents
Automatic control circuit and control device Download PDFInfo
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- CN209297488U CN209297488U CN201821657958.8U CN201821657958U CN209297488U CN 209297488 U CN209297488 U CN 209297488U CN 201821657958 U CN201821657958 U CN 201821657958U CN 209297488 U CN209297488 U CN 209297488U
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- control circuit
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- automatic control
- capacitor
- remote controler
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Abstract
This application involves a kind of automatic control circuit and control devices, the circuit includes being demodulated for receiving the radiofrequency signal of remote controler transmission, and the radiofrequency signal after demodulation is sent to the demodulator circuit of control circuit, and the control circuit for the radiofrequency signal after demodulation to be parsed, and controlled according to the signal after parsing controlled device；Control circuit connects demodulator circuit and controlled device.The control device includes remote controler and automatic control circuit, and the demodulator circuit and remote controler of automatic control circuit are wirelessly connected.Above-mentioned automatic control circuit receives the control that may be implemented after the radiofrequency signal that remote controler is sent is handled to electrical equipment, and control device can realize corresponding control function according to the instruction of remote controler.The property easy to use of electrical equipment can be increased by above-mentioned automatic control circuit and control device, improve reliability.
Description
Technical field
The utility model relates to technical field of electric power, more particularly to a kind of automatic control circuit and control device.
Background technique
With the development of science and technology, various electrical equipments emerge one after another.Electrical equipment is in our life and production
The important function played can not be ignored, and bring us great convenience, become indispensable one in our production and living
Part.
In order to enable electrical equipment to work normally, traditional control mode is utilized in design operation system in equipment
Mode realizes the control to electrical equipment.However, the increase of operating system can be such that the volume of electrical equipment increases, cause using
It is not convenient enough to get up.
Utility model content
Based on this, it is necessary to for the problem of electrical equipment victory inconvenient for use, provide a kind of automatic control circuit and control
Device.
A kind of automatic control circuit, comprising:
Demodulator circuit, the radiofrequency signal for receiving remote controler transmission is demodulated, and the radiofrequency signal after demodulation is sent out
It send to control circuit；
Control circuit, for being parsed to the radiofrequency signal after demodulation, and according to the signal after parsing to controlled device
It is controlled；The control circuit connects the demodulator circuit, and for connecting the controlled device.
A kind of control device, including remote controler and automatic control circuit, the demodulator circuit of the automatic control circuit and institute
State remote controler wireless connection.
Above-mentioned automatic control circuit and control device, by demodulator circuit receive remote controler send radiofrequency signal automatically into
Radiofrequency signal after demodulation is sent to after control circuit without intervening and carries out dissection process by control circuit, control by row demodulation
Circuit realizes the control to electrical equipment according to the signal after parsing, keeps electrical equipment easy to use and reliable.Control device includes
Automatic control circuit and remote controler can realize corresponding control function according to the instruction of remote controler.Pass through above-mentioned automatic control
Circuit and control device can increase the property easy to use of electrical equipment, improve reliability.
Detailed description of the invention
Fig. 1 is automatic control circuit structure chart in an embodiment；
Fig. 2 is automatic control circuit composition figure in an embodiment；
Fig. 3 is automatic control circuit structure chart in an another embodiment；
Fig. 4 is power supply circuit composition figure in an embodiment.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, by the following examples, it and ties
Attached drawing is closed, the utility model is described more fully.It should be appreciated that specific embodiment described herein is only to solve
The utility model is released, is not used to limit the utility model.
In one embodiment, referring to Figure 1, automatic control circuit includes demodulator circuit 10 and control circuit 20, demodulation
The radiofrequency signal that circuit 10 is used to receive remote controler transmission is demodulated, and the radiofrequency signal after demodulation is sent to control circuit
20；Control circuit 20 connects demodulator circuit 10 and controlled device, for parsing to the radiofrequency signal after demodulation, and according to solution
Signal after analysis controls controlled device.Wherein, demodulator circuit 10 can be with after receiving the radiofrequency signal of remote controler transmission
Radiofrequency signal is demodulated automatically, without intervening, and the radiofrequency signal after demodulation is sent to control circuit 20, control circuit
20 realize the control to electrical equipment according to the radiofrequency signal after parsing, keep electrical equipment easy to use and reliable.
In one embodiment, Fig. 2 is referred to, demodulator circuit 10 includes wireless receiving chip U5, antenna E1, filter circuit
101 resonator Y1, wireless receiving chip U5 connection control circuit 20, and antenna E1, resonator are connected by filter circuit 101
Y1 connection wireless receiving chip U5.
Wherein, antenna E1 is sent to filter circuit 101 after receiving radiofrequency signal, and filter circuit 101 is penetrated to what is received
Frequency signal is filtered, and is then transferred to wireless receiving chip U5.Wireless receiving chip U5 is to the radiofrequency signal received
Output realizes corresponding control function by control circuit 20, wireless receiving chip U5 is also to control circuit 20 after being demodulated
Resonator Y1 is connected, for receiving the clock signal of resonator Y1 generation, achievees the purpose that normal work.Filter circuit 101 can
To filter clutter, be conducive to the job stability for improving circuit.The model of wireless receiving chip U5 is not unique, in the present embodiment
The wireless receiving chip of model LR680R can be used, it will be understood that in other embodiments, as long as radio frequency letter may be implemented
The wireless receiving chip U5 of other models of number demodulation function also thinks to meet the requirements.
Specifically, in the present embodiment, as shown in Fig. 2, the ANT pin of wireless receiving chip U5 connects antenna E1, wirelessly
The DOUT pin for receiving chip U5 connects control circuit, the VSSRF pin ground connection of wireless receiving chip U5；Wireless receiving chip U5
VDDRF pin connection capacitor C12 one end, capacitor C12 the other end ground connection；The CTH pin of wireless receiving chip U5 connects
One end of capacitor C13, the other end ground connection of capacitor C13；One end of the CAGC pin connection capacitor C10 of wireless receiving chip U5,
The other end of capacitor C10 is grounded；The SHUT pin of wireless receiving chip U5 is enable end, is 0 when normal work, turns off Shi Weixin
The operating voltage of piece；The OSC pin of wireless receiving chip U5 connects resonator Y1, for receiving the clock letter of resonator Y1 generation
Number.Wherein, capacitor C12, capacitor C13 and the capacitor C10 being connect with wireless receiving chip U5 for realizing internal signal filtering
Function.Antenna E1, which is received, is sent to filter circuit 101 after radiofrequency signal, filter circuit 101 to the radiofrequency signal received into
Row filtering processing, is then transferred to the ANT pin of wireless receiving chip U5, and ANT pin is that the antenna of wireless receiving chip U5 is defeated
Enter end, for receiving external radiofrequency signal, then the radiofrequency signal received is demodulated, passes through DOUT pin after demodulation
Output digit signals are further processed by control circuit 20 to control circuit 20, realize corresponding control function.
Resonator Y1 is for generating clock signal, in one embodiment, resonator Y1 type can for quartz crystal or
Person's ceramic resonator is selected according to specific work requirements.For example, when wireless receiving chip U5 work is under narrowband wide mode
When, quartz-crystal resonator can preferably meet work requirements.
In one embodiment, filter circuit 101 includes inductance L1, inductance L2, capacitor C11 and capacitor C9, inductance L1 mono-
End connection antenna E1, other end ground connection；The one end inductance L2 connects antenna E1, other end ground connection；The one end capacitor C11 connects antenna
E1, other end ground connection, the one end capacitor C9 connect antenna E1, and the other end connects wireless receiving chip U5, and is grounded by inductance L2.
In the present embodiment, filter circuit 101 only includes two inductance and two capacitors, is conducive to reduce circuit area.Pass through two
The filter circuit 101 of inductance and two capacitors composition is filtered, and can also be saved while ensuring signal transmission reliability
Production cost.
In addition, the corresponding parameter of each component according to the difference of 20 frequency, demodulation frequency of control circuit, in demodulator circuit 10
It is worth also different.By taking frequency, demodulation frequency is the demodulator circuit 10 of 315Mhz as an example, the value of inductance L1 is 27nH in circuit, inductance L2's
Value is 39nH or 33nH, and the value of capacitor C11 is 6pF, and the value of capacitor C9 is 2.2pF or 2.4pF, and the value of capacitor C12 is 0.1 μ F,
The value of capacitor C13 is 0.47 μ F, and the value of capacitor C10 is 4.7 μ F, and the generation frequency of resonator Y1 is 6.7458Mhz.Pass through selection
To the rf signal reception and demodulation that frequency is 315Mhz, then the component composition demodulator circuit 10 of special parameter may be implemented
Signal after demodulation is sent to control circuit 20 and realizes corresponding function.315Mhz wireless module is very widely used, can be with
Apply such as vehicle monitoring, access control system, industrial data acquisition system, wireless tag, identification, fire safety system,
In the fields such as wireless remote-control system, biological signal collecting, robot control or Digital Image Transmission, people day can be greatly improved
The convenience often lived.It is appreciated that in other embodiments, the parameter value by changing component in demodulator circuit 10 can also
To realize the demodulation function to other frequency RF signals.
In one embodiment, as shown in Fig. 2, control circuit 20 includes controller U1 and filter circuit of pressure-stabilizing 201, control
Device U1 connection demodulator circuit 10 and controlled device, filter circuit of pressure-stabilizing 201 are connect with controller U1.Specifically, controller U1 connects
Demodulator circuit 10 is connect, the radiofrequency signal after the demodulation exported for receiving demodulation circuit 10 is parsed, according to the letter after parsing
Number corresponding control function is realized to the controlled device that is attached thereto, guarantees the normal work of controlled device.Filter circuit of pressure-stabilizing
201 connect with controller U1, are also used to connect power access end VCC_3V3, and filter circuit of pressure-stabilizing 201 accesses power access end
The voltage of VCC_3V3 input is powered after carrying out voltage regulation filtering for controller U1, can be maintained the powered stable of controller U1, both may be used
To protect controller U1 damage as caused by power supply instability itself, the functional reliability of controller U1 can also be improved.
In one embodiment, filter circuit of pressure-stabilizing 201 includes capacitor C1 and capacitor C2, and the one end capacitor C1 ground connection is another
End connection power access end VCC_3V3 and controller U1；The one end capacitor C2 ground connection, the other end connect power access end VCC_3V3
With controller U1.The specific value of capacitor C1 and capacitor C2 is not unique, for example, the value of capacitor C1 can be 4.7 μ F, capacitor C2's
Value can be 0.1 μ F.Specifically, capacitor C1 and capacitor C2 are in parallel, and parallel circuit one end ground connection, the other end connects power access end
VCC_3V3 and controller U1, not only makes power supply direct current output give controller U1 smooth steady, reduces alternation pulsating current to control
The influence of device U1 processed, while the current fluctuation generated and being sealed in via AC power source in the also absorbable electronic circuit course of work
Interference, so that the working performance of electronic circuit is more stable, the combination of capacitor C1 and capacitor C2 parallel connection can also improve filter
The working effect of wave capacitor.
In one embodiment, the type of controller U1 can be single-chip microcontroller, CPLD (Complex Programmable
Logic Device, Complex Programmable Logic Devices) or FPGA (Field-Programmable Gate Array, scene can
Program gate array).Single-chip microcontroller is a kind of IC chip, is using very large scale integration technology with data processing
The central processor CPU of ability, random access memory ram, read only memory ROM, a variety of I/O mouthfuls and interruption systems, timer/meter
The functions such as number device are integrated into the small and perfect microcomputer system constituted on one piece of silicon wafer.Single-chip microcontroller is each function part
Part is integrated on a single die, and inside uses bus structures, reduces the line between each chip, substantially increases single-chip microcontroller
Reliability and anti-interference ability, thus have the advantages that small in size, structure is simple, high reliablity.Although in addition, single-chip microcontroller structure
It is relatively simple, but there is more I/O mouth, arithmetical operation, logical operation and bit manipulation etc. can be carried out, control ability is strong.
CPLD is a kind of user voluntarily digital integrated electronic circuit of constitutive logic function as needed, it have flexible in programming, integrated level it is high,
Design and develop the advantages that period is short, the scope of application is wide, design and manufacture cost is low, strong security, popular price, and due to
CPLD is the programming of logical block grade, and the interconnection between logical block is lump type, therefore CPLD speed is fast, and is had biggish
Time predictability.FPGA is one of specific integrated circuit field semi-custom circuit, it is logic-based door and trigger
, parallel task processing truly may be implemented, and FPGA does not use operating system, has for each single item task really
Qualitative hardware, design cost is low, and job stability is high.It is to be understood that in the present embodiment, CPLD, FPGA or single-chip microcontroller are all
The function of controller U1 may be implemented, that is, realize that the signal exported to demodulator circuit 10 parses, and issue corresponding control
It instructs to controlled device, controls controlled device and complete corresponding movement.
The model of controller U1 is not unique, and the controller of model C8051F330 can be used in the present embodiment, can be with
Understand, in other embodiments, as long as the parsing of radiofrequency signal may be implemented and complete other models of corresponding control function
Controller U1 also think to meet the requirements.Specifically, in the present embodiment, as shown in Fig. 2, the GND pin of controller U1 is grounded,
The VDD pin of controller U1 connects power access end VCC_3V3 by filter circuit of pressure-stabilizing 201, just for access controller U1
Electric energy needed for often working；The DOUT pin of the P1.2 pin connection wireless receiving chip U5 of controller U1, wirelessly connects for receiving
The digital signal for receiving chip U5 output controls controlled device.
In one embodiment, control circuit 20 is also used to carry out received radiofrequency signal parsing and obtains address information,
And it is matched according to address information and remote controler.Control circuit 20 can learn to match different remote controler addresses.And it presses
Address resolution is realized according to certain rule and is reset, and the new address learnt will do it preservation, and power down is not lost.Specifically
Ground, control circuit 20 further include indicator light and key, and indicator light and key are connect with controller U1, indicator light and controller U1
P1.7 pin and P1.6 pin be all connected with, key is connect with the P1.5 pin of controller U1.Key sends matched order to control
Device U1 processed, controller U1 are remotely controlled the study and pairing of device address to the matched order received, can complete guidance code, key
The judgement and parsing of code and end code.Since the parsing of signal is completed inside controller U1, reduced by software decoding
The complexity of circuit design improves portable degree to reduce circuit layout area.Controller U1 is anti-by control instructions lamp
Prompt information is presented to client, user can obtain the pairing state of control circuit 20 and remote controler according to prompt information, according to matching
Next step operation is carried out to state, to improve the job stability of automatic control circuit.
In one embodiment, the quantity of indicator light is two, and the prompt information that controller U1 is issued passes through indicator light
Color change and/or flashing state embody, and when the color of two indicator lights and flashing state change, indicate controller U1
Working condition changed, the different conditions of indicator light respectively represent the different working condition of controller U1, so as to
By the different working condition information accurate feedback of controller U1 to client, it is convenient for guest operation.Specifically, under original state, two
A indicator light is blue lamp flashing state, indicates that control circuit 20 not yet works normally, at this time long-pressing key 3 seconds, is referred to when two
Show that lamp becomes to indicate that booting is completed after red light blue lamp is always on.Booting is completed after unclamping key, if control circuit 20 has at this time
Remote controler through matching, red light can be in state be always on, if the remote controler that control circuit 20 is not matched at this time, blue lamp can dodge
It is bright, it needs to be matched using remote controler: firstly, long-pressing switch key 3 seconds, then indicating when blue lamp is in flashing state
Lamp becomes red light blue lamp from blue lamp flashing and is always on, and continues long-pressing switch key 3 seconds, when automatic control circuit has been in matched dies
Blue indicator light starts to flash when formula, can unclamp key at this time；Subsequent automatic control circuit can enter mode of learning, when pressing
After any key of current remote controler, indicator light becomes blue lamp extinguishing, red light is always on state, prompts user to automatically control electricity at this time
The pairing of remote controler address has been completed on road, can be used normally.When needing replacing remote controler, can repeat the above steps into
The study of the new remote controler address of row.Control circuit 20 can be remotely controlled the study of device and be fitted according to the address information after parsing
Match, and save new address to memory, after automatic control circuit re-powers, the remote controler address information saved will not lose
It loses, can be matched in this way to avoid the repetition to same remote controler address, simplify using step, improve property easy to use.
In addition, the working condition of automatic control circuit can also lead to after automatic control circuit and remote controler successful matching
The variable condition for crossing indicator light feeds back to user.Specifically, when remote controler address matching is incorrect, the key of remote controler is pressed
Afterwards, blue lamp can flash twice, and prompting this remote controler of user with this is not the remote controler of current automatic control circuit pairing, Yong Huke
To replace remote controler or automatic control circuit made to carry out matching operation with current remote controler again.When key command is not supported
When, after the key for pressing remote controler, blue lamp can flash three times, prompt the current remote controler address matching of user correct with this, still
Instruction is not supported, other keys by the remote controler can be attempted.When reception instruction is correct, after the key for pressing remote controler,
Indicator light meeting brilliant blue lamp is primary, and red light is always on later, prompts user's automatic control circuit to receive instruction correctly with this, can carry out
Normal control function.The matching status of automatic control circuit can be accurately reflected by the situation of change of indicator light, to refer to
It leads user further to be operated, ensure that the work accuracy of automatic control circuit.
In one embodiment, Fig. 3 is referred to, automatic control circuit further includes power supply circuit 30, power supply circuit 30 and control
Circuit 20 processed connects.Power supply circuit 30 connects external power supply VCC_BAT and control circuit 20, for external power supply VCC_BAT
It powers again to control circuit 20 after carrying out certain processing, is conducive to make 20 steady operation of control circuit.
Specifically, in one embodiment, as shown in figure 4, power supply circuit 30 include power supply control chip U4, capacitor C5,
Capacitor C6, capacitor C7 and capacitor C8.The model of power supply control chip U4 is not unique, and model can be used in the present embodiment
The power supply control chip of LP2981-33DBVR, it will be understood that in other embodiments, as long as can management and control to electric energy
The power supply control chip of other models of system is also thought to meet the requirements.Specifically, in the present embodiment, power supply control chip U4
IN pin connects external power supply VCC_BAT, capacitor C5 and capacitor C6, and the one end capacitor C5 connects external power supply VCC_BAT and power supply
The IN pin of chip U4 is controlled, other end ground connection, the one end capacitor C6 connects external power supply VCC_BAT's and power supply control chip U4
IN pin, other end ground connection；The GND pin of power supply control chip U4 is grounded；The EN pin of power supply control chip U4 connects capacitor
One end of C8, the other end ground connection of capacitor C8；One end of the ADJ pin connection capacitor C7 of power supply control chip U4, capacitor C7's
Other end ground connection；The OUT pin of power supply control chip U4 connects control circuit 20, especially by power access end VCC_3V3 with
Filter circuit of pressure-stabilizing 201 connects, for exporting electric energy after treatment.Further, the value of capacitor C5 is 1 μ F, capacitor C6
Value be 0.1 μ F, the value of capacitor C8 is 1 μ F, and the value of capacitor C7 is 0.1 μ F.Power supply circuit 30 may be implemented transformation to electric energy,
Distribution, detection and other electric energy management functions can also make to control other than it can achieve the purpose powered to control circuit 20
Circuit 20 plays preferable working performance.
Above-mentioned automatic control circuit receives the radiofrequency signal that remote controler is sent by demodulator circuit and is demodulated automatically, nothing
Need to intervene, the radiofrequency signal after demodulation be sent to after control circuit, dissection process is carried out by control circuit, control circuit according to
Signal after parsing realizes the control to electrical equipment, keeps electrical equipment easy to use and reliable.
Automatic control circuit includes demodulator circuit 10 and control circuit 20, has wireless decoding, logic control two parts function
Energy.Demodulator circuit 10 can demodulate radiofrequency signal automatically, be not necessarily to intervene, and control circuit 20, which has, may be programmed, and software decodes and determines
Inhibition and generation logic control function.Demodulator circuit 10 and control circuit 20 can be integrated on same circuit board with peripheral circuit, be had
There is highly integrated characteristic, can be applied in the device of narrow space, the automatic control function of complex logic can be completed, it is full
Foot is more with the product design of wireless control demand.It, should be certainly due to remotely being controlled by the way of wireless communication
Dynamic control circuit can also increase safe operation distance, improve production safety.
In one embodiment, a kind of control device is provided, which includes automatic control circuit and remote controler, from
The demodulator circuit and remote controler of dynamic control circuit are wirelessly connected.Specifically, automatic control circuit includes demodulator circuit and control electricity
Road.Wherein, the radiofrequency signal that demodulator circuit is used to receive remote controler transmission is demodulated, and the radiofrequency signal after demodulation is sent
To control circuit；Control circuit connects demodulator circuit and controlled device, for being parsed to the radiofrequency signal after demodulation, and root
Controlled device is controlled according to the signal after parsing.
Control circuit is also used to learn to match different remote controler addresses, and realizes address resolution according to certain rule
With reset, it will do it preservation after study to new address, will not be lost after the new address power down of preservation.Demodulator circuit connects
It can be demodulated automatically after receiving the radiofrequency signal of remote controler transmission, without intervening, and by the radiofrequency signal after demodulation
It is sent to control circuit, control circuit realizes the control to electrical equipment according to the radiofrequency signal after parsing, makes electrical equipment
With convenient and reliable.
Above-mentioned control device, including automatic control circuit and remote controler can be realized corresponding according to the instruction of remote controler
Control function.The property easy to use of electrical equipment can be increased by above-mentioned control device, improve reliability.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of automatic control circuit, which is characterized in that the automatic control circuit includes:
It receives the radiofrequency signal that remote controler is sent to be demodulated, and the radiofrequency signal after demodulation is sent to the demodulation of control circuit
Circuit；
The control electricity that radiofrequency signal after demodulation is parsed, and controlled device is controlled according to the signal after parsing
Road；The control circuit connects the demodulator circuit, and for connecting the controlled device.
2. automatic control circuit according to claim 1, which is characterized in that the demodulator circuit includes wireless receiving core
Piece, antenna, filter circuit resonator, the wireless receiving chip connects the control circuit, and passes through the filter circuit
The antenna is connected, the resonator connects the wireless receiving chip.
3. automatic control circuit according to claim 2, which is characterized in that the resonator be quartz oscillator or
Ceramic resonator.
4. automatic control circuit according to claim 2, which is characterized in that the filter circuit includes inductance L1, inductance
L2, capacitor C11 and capacitor C9, the one end the inductance L1 connect the antenna, other end ground connection；The one end the inductance L2 connects institute
State antenna, other end ground connection；The one end the capacitor C11 connects the antenna, and other end ground connection, the one end the capacitor C9 connects institute
Antenna is stated, the other end connects the wireless receiving chip, and is grounded by the inductance L2.
5. automatic control circuit according to claim 1, which is characterized in that the control circuit includes controller and pressure stabilizing
Filter circuit, the controller connect the demodulator circuit and the controlled device, the filter circuit of pressure-stabilizing and the control
Device connection.
6. automatic control circuit according to claim 5, which is characterized in that the filter circuit of pressure-stabilizing include capacitor C1 and
Capacitor C2, the one end capacitor C1 ground connection, the other end connect external power supply and the controller；The one end capacitor C2 ground connection,
The other end connects external power supply and the controller.
7. automatic control circuit according to claim 5, which is characterized in that the controller be single-chip microcontroller, CPLD or
FPGA。
8. automatic control circuit according to claim 5, which is characterized in that the control circuit further include indicator light and by
Key, the indicator light and the key are connect with the controller.
9. automatic control circuit according to claim 1, which is characterized in that it further include power supply circuit, the power supply circuit
It is connect with the control circuit.
10. a kind of control device, which is characterized in that including remote controler and automatic control as described in any one of claims 1-9
Circuit processed, the demodulator circuit of the automatic control circuit and the remote controler are wirelessly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821657958.8U CN209297488U (en) | 2018-10-12 | 2018-10-12 | Automatic control circuit and control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821657958.8U CN209297488U (en) | 2018-10-12 | 2018-10-12 | Automatic control circuit and control device |
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| CN209297488U true CN209297488U (en) | 2019-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109255940A (en) * | 2018-10-12 | 2019-01-22 | 深圳供电局有限公司 | automatic control circuit and control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109255940A (en) * | 2018-10-12 | 2019-01-22 | 深圳供电局有限公司 | automatic control circuit and control device |
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