CN109872549A - A kind of power supply circuit that can continuously power and the traffic-control unit based on it - Google Patents
A kind of power supply circuit that can continuously power and the traffic-control unit based on it Download PDFInfo
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- CN109872549A CN109872549A CN201910203750.1A CN201910203750A CN109872549A CN 109872549 A CN109872549 A CN 109872549A CN 201910203750 A CN201910203750 A CN 201910203750A CN 109872549 A CN109872549 A CN 109872549A
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Abstract
The invention discloses a kind of power supply circuit that can continuously power and based on its traffic-control unit, it is related to traffic signalization power supply unit field；Power supply circuit, including sequentially connected input terminal, diode array and output end；Diode array includes diode D1-D8；Input terminal includes red signal input terminal, yellow signal input part, green signal input part and zero line side, and output end includes the load end in and the load end out；The cathode of diode D1, D3, D5, D7 are all connected with the load end in, and the anode of diode D2, D4, D6, D8 are all connected with the load end out；Diode D1 anode, diode D2 cathode are all connected with red signal input terminal；While the present invention realizes that control single signal-lamp lights by power supply circuit, block the connection of other signals, overcome the shortcomings that power supply of existing single signal can not achieve continuous power supply and all signals powers cause signal can not cycle alternation the shortcomings that lighting, realize and continuously power.
Description
Technical field
The present invention relates to traffic signalization power supply unit field, especially a kind of power supply circuit and base that can continuously power
In its traffic-control unit.
Background technique
In traffic control industry, traffic signal controlling machine output red signal lights the red light of traffic lights, exports yellow signaling point
The amber light of bright traffic lights exports the green light that green signal lights traffic lights, but red, yellow, and green signal is that cycle alternation occurs, Bu Huitong
When two or three appearance；Since red, yellow, and green signal is that cycle alternation occurs, lead to not continuously to some device, machine
Device provides energy, because equipment or device are required to continuously power.
On the basis of the prior art, according to the power supply mode of single signal, as shown in figure 5, electrical equipment is from semaphore
Red signal takes electricity, and only when semaphore exports red signal, electrical equipment can be just powered on, when semaphore is switched to yellow signal
Or when green signal, it is not powered in electrical equipment, cannot also works normally；Or electrical equipment is believed from semaphore Huang
Number take electricity, only when semaphore exports yellow signal, electrical equipment can be just powered on, when semaphore be switched to red signal or
It when green signal, is not powered in electrical equipment, cannot also work normally；Or electrical equipment takes from the green signal of semaphore
Electricity, only when semaphore exports green signal, electrical equipment can be just powered on, when semaphore is switched to red signal or yellow letter
Number when, be not powered in electrical equipment, cannot also work normally.Therefore, powered using single signal, electrical equipment without
Method obtains continuous power supply, leads to not work.
On the basis of the prior art, electricity is taken simultaneously from the red, yellow, and green signal of semaphore according to for electrical equipment, in this way
The electricity is taken to can solve the continuous powerup issue of electrical equipment, but the mode of connection as shown in FIG. 6 is equivalent to and exports control machine
Red, yellow, and green signal connection, when control machine output red signal want control red light it is light when, will lead to yellow signal wire with
There is electricity simultaneously on green signal wire, cause amber light and green light that can all light simultaneously, similarly, when exporting yellow signal or green signal
Three lamps also can all light simultaneously；Therefore, aforesaid way solves the problems, such as that electrical equipment is continuously powered, and also brings signal lamp
It can not cycle alternation the problem of lighting.
To sum up, the present invention provides a kind of power supply circuit that can continuously power and the traffic-control unit based on it, real
While existing red, yellow, and green signal cycle is alternately present, it can continuously power to equipment and electric energy is provided.
Summary of the invention
It is an object of the invention to: the present invention provides a kind of power supply circuit that can continuously power and based on its traffic letter
Number control device, solving existing alternating signal lamp cycle alternation appearance can not continuously power, and causing cannot be continuous to electrical equipment
The problem of electric energy is provided.
The technical solution adopted by the invention is as follows:
A kind of power supply circuit that can continuously power, including sequentially connected input terminal, diode array and output end, it is described
Input terminal includes red signal input terminal, yellow signal input part, green signal input part and zero line side, and the output end includes load in
End and the load end out；The diode array include diode D1, diode D2, diode D3, diode D4, diode D5,
Diode D6, diode D7 and diode D8；
The diode D1, diode D3, diode D5, diode D7 cathode be all connected with load the end in, diode D2,
Diode D4, diode D6, diode D8 anode be all connected with load the end out；
The diode D1 anode, diode D2 cathode are all connected with red signal input terminal, diode D3 anode, diode D4
Cathode is all connected with yellow signal input part, and diode D5 anode, diode D6 cathode are all connected with green signal input part, diode D7 sun
Pole, diode D8 cathode are all connected with zero line side.
A kind of traffic-control unit based on power supply circuit, including traffic signal controlling machine, signal red light, yellow signal
Lamp, green signal light, power supply circuit and electrical equipment；The Traffic signal control machine input terminal connects alternating current, traffic lights
Control machine includes red signal end, yellow signal end, green signal end and zero line side, the red signal end of Traffic signal control machine, Huang Xin
Number end, green signal end be separately connected signal red light, amber light, green signal light, zero line side connects the zero curve of all signal lamps
End；Its red signal end, yellow signal end, green signal end and zero line side are also respectively connected with the input terminal of power supply circuit, and power supply circuit is defeated
Outlet connects electrical equipment, realizes while traffic lights cycle alternation is lighted as electrical equipment continued power, provides electric energy.
Preferably, the power supply circuit includes sequentially connected input terminal, diode array and output end, input terminal packet
Include red signal input terminal, yellow signal input part, green signal input part and zero line side, red signal input terminal, the Huang Xin of power supply circuit
The corresponding red signal end with Traffic signal control machine of number input terminal, green signal input part and zero line side, yellow signal end, green signal
End is connected with zero line side, and power supply circuit output end includes loading the end in and the load end out, the end load in of power supply circuit and load
The end out is correspondingly connected with the power input and power output end of electrical equipment.
Preferably, the diode array includes diode D1, diode D2, diode D3, diode D4, diode
D5, diode D6, diode D7 and diode D8；
The diode D1, diode D3, diode D5, diode D7 cathode be all connected with load the end in, diode D2,
Diode D4, diode D6, diode D8 anode be all connected with load the end out；
The diode D1 anode, diode D2 cathode are all connected with red signal input terminal, diode D3 anode, diode D4
Cathode is all connected with yellow signal input part, and diode D5 anode, diode D6 cathode are all connected with green signal input part, diode D7 sun
Pole, diode D8 cathode are all connected with zero line side.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. the present invention realizes that control single signal-lamp lights by power supply circuit, other are blocked by power supply circuit
The connection of signal, it is ensured that capable of continuously powering to power supply for electrical equipment, realization occurs in each signal, overcomes existing list
One signal-powered the shortcomings that can not achieve continuous power supply, also overcoming all signals to power causes signal lamp can not cycle alternation point
Bright disadvantage is realized and guarantees to constantly provide electric energy while signal lamp cycle alternation works normally for electrical equipment；
2. power supply circuit of the invention includes sequentially connected input terminal, diode array and output end, power supply circuit is adopted
Circuit connection may be implemented: when signal cycle is alternately present, can guarantee that single signal is worked normally and supplied for electrical equipment
Single signal does not influence other signals while electric；
3. traffic signal controlling machine of the invention exports red signal, red light is lighted, and passes through two poles in power supply circuit
The diode D8 of power supply circuit is connected after pipe D1 connection electrical equipment, diode D8 reconnects control machine, two poles of power supply circuit
Pipe D3, diode D5 isolation signals avoid lighting amber light and green light, can similarly obtain when exporting yellow signal and green signal, realize letter
It is electrical equipment continued power while signal lamp cycle alternation works normally, electric energy is provided.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the circuit diagram of power supply circuit of the invention；
Fig. 2 is the corresponding current trend schematic diagram of red signal of the invention；
Fig. 3 is the corresponding current trend schematic diagram of yellow signal of the invention；
Fig. 4 is the corresponding current trend schematic diagram of green signal of the invention；
Fig. 5 is the circuit connection diagram that single signal (red signal) of the invention is powered；
Fig. 6 is the signal-powered circuit connection diagram of red, yellow, and green of the invention；
Fig. 7 is the circuit connection diagram of power supply unit of the invention；
Fig. 8 is traffic signal controlling machine schematic diagram of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
Technical problem: solving existing alternating signal lamp cycle alternation appearance can not continuously power, and cause to set to electricity consumption
Standby continuous the problem of electric energy is provided
Technological means: the power supply circuit that can continuously power of one kind, including sequentially connected input terminal, diode array and defeated
Outlet, input terminal include red signal input terminal, yellow signal input part, green signal input part and zero line side, and output end includes load
The end in and the load end out；Diode array includes diode D1, diode D2, diode D3, diode D4, diode D5, two
Pole pipe D6, diode D7 and diode D8；
Diode D1, diode D3, diode D5, diode D7 cathode be all connected with load the end in, diode D2, two poles
Pipe D4, diode D6, diode D8 anode be all connected with load the end out；
Diode D1 anode, diode D2 cathode are all connected with red signal input terminal, diode D3 anode, diode D4 cathode
It is all connected with yellow signal input part, diode D5 anode, diode D6 cathode are all connected with green signal input part, diode D7 anode,
Diode D8 cathode is all connected with zero line side.
A kind of traffic-control unit based on power supply circuit, including traffic signal controlling machine, signal red light, yellow signal
Lamp, green signal light, power supply circuit and electrical equipment；Traffic signal control machine input terminal connects alternating current, Traffic signal control
Machine includes red signal end, yellow signal end, green signal end and zero line side, the red signal end of Traffic signal control machine, yellow signal end,
Green signal end is separately connected signal red light, amber light, green signal light, and zero line side connects the zero line side of all signal lamps；Its
Red signal end, yellow signal end, green signal end and zero line side are also respectively connected with the input terminal of power supply circuit, and power supply circuit output end connects
Electrical equipment is connect, realizes while traffic lights cycle alternation is lighted as electrical equipment continued power, electric energy is provided.
Power supply circuit includes sequentially connected input terminal, diode array and output end, and input terminal includes that red signal is defeated
Enter end, yellow signal input part, green signal input part and zero line side, it is the red signal input terminal of power supply circuit, yellow signal input part, green
Signal input part and corresponding red signal end, yellow signal end, green signal end and the zero line side with Traffic signal control machine of zero line side
Connection, power supply circuit output end include the load end in and the load end out, and the end load in of power supply circuit is corresponding with the load end out
Connect the power input and power output end of electrical equipment.
Diode array include diode D1, diode D2, diode D3, diode D4, diode D5, diode D6,
Diode D7 and diode D8；
Diode D1, diode D3, diode D5, diode D7 cathode be all connected with load the end in, diode D2, two poles
Pipe D4, diode D6, diode D8 anode be all connected with load the end out；
Diode D1 anode, diode D2 cathode are all connected with red signal input terminal, diode D3 anode, diode D4 cathode
It is all connected with yellow signal input part, diode D5 anode, diode D6 cathode are all connected with green signal input part, diode D7 anode,
Diode D8 cathode is all connected with zero line side.
Technical effect: while the present invention realizes that control single signal-lamp lights by power supply circuit, pass through power supply circuit
Block the connection of other signals, it is ensured that capable of continuously powering, overcoming to power supply for electrical equipment, realization occur in each signal
The shortcomings that existing single signal power supply can not achieve continuous power supply, also to overcome all signals to power cause signal that can not recycle
The shortcomings that being alternately present is realized and guarantees continuously to provide electric energy while signal lamp cycle alternation works normally for electrical equipment；For
Circuit includes sequentially connected input terminal, diode array and output end, and the circuit connection that power supply circuit uses may be implemented:
When signal cycle is alternately present, it can guarantee that single signal does not influence while single signal works normally and is power supply for electrical equipment
Other signals；When traffic signal controlling machine exports red signal, red light is lighted, and is used by the diode D1 connection in power supply circuit
The diode D8 of power supply circuit is connected after electric equipment, diode D8 reconnects control machine, diode D3, the diode of power supply circuit
D5 isolation signals avoid lighting amber light and green light, can similarly obtain when exporting yellow signal and green signal, realize signal lamp cycle alternation
It is electrical equipment continued power while normal work, electric energy is provided.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides the traffic-control units that one kind can continuously power, and are suitable for traffic signalization field；
Because existing traffic signalization lamp cycle alternation occurs, to realize that while traffic lights work normally be that other electricity consumptions are set
Available electricity；It needs to design a kind of power supply unit, when realizing that each signal of traffic signals occurs, both can guarantee that signal lamp was normal
Work, but it is unaffected to be able to achieve other tally circuits, and electrical equipment can be powered；Each signal is able to achieve above-mentioned function
Can, the appearance of traffic lights cycle alternation can be implemented as the normal work that electrical equipment continuously powers and is able to achieve signal lamp
Make, overcomes single signal power supply to cannot achieve continuous power supply, the equal power supply signal lamp driver of multiple signals impacted, can not normally follow
The problem of ring alternately lights realizes that guaranteeing is that electrical equipment is continuously powered while alternating signal lamp cycle alternation works normally,
Electric energy is provided.
Traffic-control unit includes traffic signal controlling machine, signal red light, amber light, green signal light, power supply electricity
Road and electrical equipment；
Power supply circuit connection is as follows: including sequentially connected input terminal, diode array and output end, input terminal includes red
Signal input part, yellow signal input part, green signal input part and zero line side, output end include the load end in and the load end out；Two
Pole pipe array include diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7 and
Diode D8；
Diode D1, diode D3, diode D5, diode D7 cathode be all connected with load the end in, diode D2, two poles
Pipe D4, diode D6, diode D8 anode be all connected with load the end out；
Diode D1 anode, diode D2 cathode are all connected with red signal input terminal, diode D3 anode, diode D4 cathode
It is all connected with yellow signal input part, diode D5 anode, diode D6 cathode are all connected with green signal input part, diode D7 anode,
Diode D8 cathode is all connected with zero line side.
Traffic-control unit circuit connection is as follows: Traffic signal control machine input terminal connects alternating current, traffic signals
Lamp control machine includes red signal end, yellow signal end, green signal end and zero line side, the red signal end of Traffic signal control machine, Huang
Signal end, green signal end are separately connected signal red light, amber light, green signal light, and zero line side connects the zero of all signal lamps
Line end；Its red signal end, yellow signal end, green signal end and zero line side are also respectively connected with the input terminal of power supply circuit, power supply circuit
Output end connects electrical equipment, realizes while traffic lights cycle alternation is lighted as electrical equipment continued power, provides electricity
Can, circuit connection diagram as shown in fig. 7, power supply circuit includes sequentially connected input terminal, diode array and output end,
Input terminal includes red signal input terminal, yellow signal input part, green signal input part and zero line side, the red signal input of power supply circuit
End, yellow signal input part, green signal input part and the corresponding red signal end with Traffic signal control machine of zero line side, yellow signal
End, green signal end are connected with zero line side, and power supply circuit output end includes the load end in and the load end out, the load of power supply circuit
The end in and the load end out are correspondingly connected with the power input and power output end of electrical equipment, the connection of shown diode array
As shown in the connection description of above-mentioned power supply circuit；It is more than the diode of 1000V, such as 1N4007 that diode, which uses reverse withstand voltage,
Or 1N5408, traffic signal controlling machine model SW3000, electrical equipment include that countdown or blind person's clock or voice mention
Show column, the model 1DX-JD3YCR-300 that signal red light uses, the model 1DX-JD3YCG-300 that green signal light uses are yellow
The model 1DX-JD3YCY-300 that signal lamp uses.
Working principle:
When traffic signal controlling machine exports red signal (as shown in figure 8, semaphore control panel passes through control switch K1, K2,
K3 control exports the signal of what color, when K1 switch conduction, exports red signal, is equivalent to a red signal output end fire at this time
Line and alternating current firewire are connected, and the output zero curve and input zero curve of semaphore are conllinear, so being equivalent to handle when K1 is connected
220V electric main is communicates directly to red signal output end；When yellow signal, the output of green signal similarly, but three road signal of red, yellow, and green
Will not 2 kinds or 3 kinds export simultaneously), and when alternating current is in the upper half period of sine wave, the voltage of red route is higher than at this time
The voltage of black common wire；The danger signal of control machine output passes through signal lamp all the way, so that red eye is shone, in addition all the way
Control machine then can be returned to by diode D8 again by diode D1 to subsequent electrical equipment, keep subsequent electrical equipment logical
Electricity；Danger signal route can be isolated with yellow signal route by diode D3 at this time, diode D5 can by danger signal route with
The isolation of green route, the yellow route and green route for reaching traffic lights will not have electricity, the mesh that amber light and green light do not light
, as shown in Fig. 2 (a).
When traffic signal controlling machine exports red signal (220V electric main), and alternating current is in the lower half of sine wave
When the phase, the voltage of red route is lower than the voltage of black common wire at this time；The danger signal of control machine output passes through signal all the way
Lamp makes red eye shine, and in addition then can pass through again diode D2 by diode D7 to subsequent electrical equipment all the way
Control machine is returned to, so that subsequent electrical equipment is powered, as shown in Fig. 2 (b).
When traffic signal controlling machine exports yellow signal (220V electric main), and alternating current is in the upper half of sine wave
When the phase, the voltage of yellow route is higher than the voltage of black common wire at this time；The yellow signal of control machine output passes through signal all the way
Lamp makes amber lamp shine, and in addition then can pass through again diode D8 by diode D3 to subsequent electrical equipment all the way
Control machine is returned to, subsequent electrical equipment is made to be powered；At this time diode D1 can by yellow signal route and danger signal route every
From yellow signal route can be isolated with green route by diode D5, the red route and green of such traffic lights this side
Electricity is not had on route, red light will not be lighted with green light, as shown in Fig. 3 (a).
When traffic signal controlling machine exports yellow signal (220V electric main), and alternating current is in the lower half of sine wave
When the period, the voltage of yellow route is lower than the voltage of black common wire at this time；The yellow signal of control machine output passes through letter all the way
Signal lamp makes amber lamp shine, and in addition then can pass through again diode by diode D7 to subsequent electrical equipment all the way
D4 returns to control machine, so that subsequent electrical equipment is powered, as shown in Fig. 3 (b).
When traffic signal controlling machine exports green signal (220V electric main), and alternating current is in the upper half of sine wave
When the phase, the voltage of green route is higher than the voltage of black common wire at this time；The green of control machine output passes through signal all the way
Lamp makes greensignal light shine, and in addition then can pass through again diode D8 by diode D5 to subsequent electrical equipment all the way
Control machine is returned to, subsequent electrical equipment is made to be powered；At this time diode D1 can by green route and danger signal route every
From yellow signal route can be isolated with green route by diode D3, the red route and yellow of such traffic lights this side
Electricity is not had on route, red light will not be lighted with amber light, as shown in Fig. 4 (a).
When traffic signal controlling machine exports green (220V electric main), and alternating current is in the lower half of sine wave
When the period, the voltage of green route is lower than the voltage of black common wire at this time.The green of control machine output passes through letter all the way
Signal lamp makes greensignal light shine, and in addition then can pass through again diode by diode D7 to subsequent electrical equipment all the way
D6 returns to control machine, and subsequent electrical equipment is made to be powered as shown in Fig. 4 (b).
The application both may be implemented in traffic signal controlling machine alternately output red, yellow, and green signal continuously to subsequent
Power supply for electrical equipment, and traffic signal controlling machine control traffic lights is not influenced.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (4)
1. the power supply circuit that one kind can continuously power, it is characterised in that: including sequentially connected input terminal, diode array and defeated
Outlet, the input terminal include red signal input terminal, yellow signal input part, green signal input part and zero line side, the output end
Including the load end in and the load end out；The diode array includes diode D1, diode D2, diode D3, diode
D4, diode D5, diode D6, diode D7 and diode D8；
The diode D1, diode D3, diode D5, diode D7 cathode be all connected with load the end in, diode D2, two poles
Pipe D4, diode D6, diode D8 anode be all connected with load the end out；
The diode D1 anode, diode D2 cathode are all connected with red signal input terminal, diode D3 anode, diode D4 cathode
It is all connected with yellow signal input part, diode D5 anode, diode D6 cathode are all connected with green signal input part, diode D7 anode,
Diode D8 cathode is all connected with zero line side.
2. a kind of traffic-control unit based on power supply circuit described in claim 1, it is characterised in that: including traffic signals
Control machine, signal red light, amber light, green signal light, power supply circuit and electrical equipment；The Traffic signal control machine input
End connection alternating current, Traffic signal control machine include red signal end, yellow signal end, green signal end and zero line side, traffic lights
The red signal end of control machine, yellow signal end, green signal end are separately connected signal red light, amber light, green signal light, zero line side
Connect the zero line side of all signal lamps；Its red signal end, yellow signal end, green signal end and zero line side are also respectively connected with power supply circuit
Input terminal, power supply circuit output end connects electrical equipment, realizes that traffic lights cycle alternation is set for electricity consumption while light
Standby continued power, provides electric energy.
3. traffic-control unit according to claim 2, it is characterised in that: the power supply circuit includes being sequentially connected
Input terminal, diode array and output end, input terminal includes red signal input terminal, yellow signal input part, the input of green signal
End and zero line side, the red signal input terminal of power supply circuit, yellow signal input part, green signal input part and zero line side correspondence and traffic
The red signal end of Signalized control machine, yellow signal end, green signal end are connected with zero line side, and power supply circuit output end includes load in
End and the load end out, the load end in and the load end out of power supply circuit are correspondingly connected with the power input and power supply of electrical equipment
Output end.
4. traffic-control unit according to claim 3, it is characterised in that: the diode array includes diode
D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7 and diode D8；
The diode D1, diode D3, diode D5, diode D7 cathode be all connected with load the end in, diode D2, two poles
Pipe D4, diode D6, diode D8 anode be all connected with load the end out；
The diode D1 anode, diode D2 cathode are all connected with red signal input terminal, diode D3 anode, diode D4 cathode
It is all connected with yellow signal input part, diode D5 anode, diode D6 cathode are all connected with green signal input part, diode D7 anode,
Diode D8 cathode is all connected with zero line side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910203750.1A CN109872549A (en) | 2019-03-18 | 2019-03-18 | A kind of power supply circuit that can continuously power and the traffic-control unit based on it |
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| CN201910203750.1A CN109872549A (en) | 2019-03-18 | 2019-03-18 | A kind of power supply circuit that can continuously power and the traffic-control unit based on it |
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Application publication date: 20190611 |