CN114333636B - Full-transparent type luminous label controller - Google Patents
Full-transparent type luminous label controller Download PDFInfo
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- CN114333636B CN114333636B CN202111470039.6A CN202111470039A CN114333636B CN 114333636 B CN114333636 B CN 114333636B CN 202111470039 A CN202111470039 A CN 202111470039A CN 114333636 B CN114333636 B CN 114333636B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
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- 238000012545 processing Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
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Abstract
The invention discloses a full-transparent type luminous label controller, which is externally connected with a power supply and controls a plurality of full-transparent type luminous labels; the fully-transparent luminous label controller comprises a power supply reverse connection prevention circuit, a solar energy sampling circuit, an MCU and a high-power output circuit; the MCU comprises an AD conversion circuit and a software filtering unit, the software filtering unit prevents the IO port of the MCU from performing misoperation on a rear-stage high-power output circuit, and the AD conversion circuit performs software filtering and delay processing by setting different wide threshold values through different lighting and closing functions. The invention can solve the problem that the on-off of the full-transparent luminous sign in each direction is asynchronous; the reverse connection prevention circuit for the high-power supply can prevent installation and maintenance personnel from preventing misoperation, and damage to the circuit caused by reverse connection of the positive electrode and the negative electrode of the power supply.
Description
Technical Field
The invention belongs to the technical field of traffic, and particularly relates to a full-transparent type luminous sign controller.
Background
Along with the continuous improvement of the road management level, the requirement on urban landscape is continuously improved, and the traditional reflection system has no recognition function at night under the condition of no light source main body irradiation. Under severe weather conditions such as rain and fog, the distance of visual recognition depends on the illumination brightness of the light source body, and the direction and condition recognition of vehicles and pedestrians are seriously influenced. The application of the luminous sign of formula of penetrating all is extensive more, and the luminous sign of formula of penetrating all has kept the contrary reflective mark's of traditional sign performance completely, and is unanimous with the contrary reflective mark effect of tradition under the condition of not bright daytime, runs into the bad weather that visibility is lower such as haze, sleet, perhaps when driver and pedestrian go on a journey at night, and this kind of luminous sign of formula of penetrating all can light through control circuit, can improve the discernability degree driver that points to way information greatly and no longer receive reflection angle's restriction. The lighting time of the full-transparent luminous sign is finished by a set clock or different clock controllers are used in each direction of the same intersection by many manufacturers, the method cannot be timely lighted according to actual conditions in winter, summer, foggy days, rainy and snowy days and the like, and due to clock errors, the whole intersection has a sequential order.
Disclosure of Invention
In order to overcome the problems, the invention adopts the technical scheme that the voltage values of the solar panel under different light rays are different, the threshold value is set according to the light rays, when the AD conversion of the MCU detects that the voltage value is lower than the set threshold value, the full-transmission type luminous sign of the intersection is sent out to light, and when the light rays are stronger, the full-transmission type luminous sign of the intersection is sent out to close when the set threshold value for closing the full-transmission type luminous sign is exceeded. In practical application, the number of the luminous signs at the intersection is large, the internal circuits of the whole distribution box are relatively disordered, and in order to prevent installation and maintenance personnel from misoperation, the positive and negative electrodes of a power supply are connected in a reverse mode, so that the circuit is damaged, the invention provides an advanced high-power supply reverse connection prevention circuit.
Specifically, the controller of the fully transparent type luminous sign disclosed by the invention is externally connected with a power supply and controls a plurality of fully transparent type luminous signs; the fully-transparent luminous label controller comprises a power supply reverse connection prevention circuit, a solar sampling circuit, an MCU and a high-power output circuit; the MCU comprises an AD conversion circuit and a software filtering unit, the software filtering unit prevents an IO port of the MCU from carrying out misoperation on a rear-stage high-power output circuit, and the AD conversion circuit carries out software filtering and different wide threshold delay processing by distinguishing the functions of lighting and closing;
the anti-reverse connection circuit comprises a PMOS (P-channel metal oxide semiconductor) tube (Q2), a fifth resistor (R5) and a capacitor (C1), wherein a grid (G) of the PMOS tube (Q2) is connected with one end of the fifth resistor (R5) in series, the other end of the fifth resistor (R5) is connected with GND, a drain electrode (D) of the PMOS tube (Q2) is connected with a plus pole powered by a power supply, the capacitor (C1) is connected between the drain electrode (D) and the ground in parallel, and a source electrode (S) supplies power to the fully-transparent luminous sign controller circuit and the high-power output circuit;
an AD pin of the MCU is respectively connected with one ends of a first resistor (R1) and a second resistor (R2), the other end of the first resistor (R1) is connected with the cathode of a diode (D1), the other end of the second resistor (R2) is grounded and one end of an inductor (L1), the other end of the inductor (L1) is connected with a 2 nd pin of the solar sampling circuit, and the anode of the diode (D1) is connected with a 1 st pin of the solar sampling circuit;
the high-power output circuit directly drives the plurality of full-transparent luminous signs and is composed of the optical coupler (G2) and the MOS tube (Q1), and if the driving capability is not enough, the high-power output circuit is connected with a plurality of paths through an IO port of the MCU, so that the lighting and closing consistency of the full-transparent luminous signs is ensured.
Further, an IO port of the MCU is connected with an optocoupler (G2) through a current limiting resistor (R3), a 4 th pin of the optocoupler (G2) is externally connected with a pull-up resistor (R4) to drive the MOS tube (Q1) to be switched on or switched off, and the fully-transparent type luminous label is lightened or switched off; and the current-limiting resistor (R3) is also connected with a capacitor (C1), and the other end of the capacitor (C1) is connected with the No. 2 pin of the optocoupler (G2).
The invention has the following beneficial effects:
the fully-transparent type luminous sign controller provided by the invention is arranged at the same intersection, so that the problem that the fully-transparent type luminous signs in each direction are not synchronous in on and off can be solved;
the anti-reverse-connection circuit for the high-power supply can prevent installation and maintenance personnel from preventing misoperation, and damage to the circuit caused by reverse connection of the positive electrode and the negative electrode of the power supply.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a functional block diagram of the present invention;
fig. 3 is a block diagram of a controller for a fully transmissive illuminated sign of the present invention.
Detailed Description
The present invention is further described with reference to the drawings, but the present invention is not limited thereto in any way, and any modifications or alterations based on the teaching of the present invention shall fall within the scope of the present invention.
The invention provides a full-transparent type luminous sign controller, wherein a set of control circuit is installed at the same intersection, the problem of asynchronous on-off of the full-transparent type luminous signs in each direction can be solved.
Solar energy sampling circuit utilizes solar panel can produce different voltages under different illumination condition, use 5V/0.5W's solar panel, when meetting the haze, visibility is lower and is close when night visibility is lower such as sleet, solar panel's output voltage is lower, AD conversion through MCU, judge actual illumination condition, for preventing proruption transient cloud cover or object cover emergency such as, MCU is inside to carry out software filtering and filtration, prevent MCU's IO mouth to the high-power output circuit maloperation of back level, software filtering and filtration are the prior art in this technical field, this embodiment is no longer repeated. The input part of the power supply is used for preventing misoperation, the positive electrode and the negative electrode of the power supply are reversely connected to damage a circuit, the circuit is generally protected, a diode is used for preventing reverse connection, the diode is used for protecting, the circuit is simple, the cost is low, and the occupied space is small. However, when the PN junction of the diode is turned on, there is a voltage drop of < = 0.7V, which causes unnecessary loss to the circuit, and the circuit with large current will have a significant impact, because the power consumption and heat generation are not negligible in the circuit. The MOS tube scheme is adopted, the process is improved, the self property and other factors are adopted, the conduction internal resistance is smaller, and is mostly in the milliohm level or even smaller, so that the loss caused by voltage drop and power consumption of the circuit is particularly small and can be even ignored. The high-power output circuit also adopts an MOS tube scheme, the conduction internal resistance is small, and the loss and the heat generation caused by power consumption are extremely small and even can be ignored.
As shown in FIG. 1, the present invention is connected with an external power source and can control a plurality of full-transparent type luminous labels. The power of a single full-transmission luminous plate is generally 40W, and the quantity of the full-transmission luminous plates is controlled depending on the selection of MOS tubes in the power supply anti-reflection circuit.
As shown in fig. 2, the invention includes a power input circuit, a power reverse connection prevention circuit, a solar sampling circuit, an MCU AD conversion circuit, and a high power output circuit, wherein the voltage of the solar sampling circuit passes through the MCU AD conversion circuit, and a software filtering unit in the MCU prevents transient cloud cover or object cover, thereby preventing the IO port of the MCU from performing misoperation on the rear high power output circuit, and the high power output circuit is selectively switched on or switched off by a threshold set inside the MCU to drive the fully transparent type luminous plate to light up or extinguish, thereby improving the visibility of the indicating information, so that the driver is not limited by the reflection angle, and the same set of driving controls to ensure the synchronization of the fully transparent type luminous plate.
As shown in FIG. 3, a grid G series resistor R5 of the PMOS tube Q2 is connected with GND, a drain D is connected with a plus pole powered by a power supply, a capacitor C1 is connected between the drain D and the ground in parallel, and a source S supplies power to the whole circuit and the high-power drive to form a power supply anti-reverse connection circuit. At the moment of electrifying, a parasitic diode of the PMOS tube is conducted, a system forms a loop, the potential of a source electrode S is about Vbat-0.6V, the potential of a grid electrode G is 0, and the starting voltage of the MOS tube is as follows: ugs = 0- (Vbat-0.6), the conduction voltage is positive, ds of the PMOS is conducted, the parasitic diode is short-circuited, and the system forms a loop by the connection of ds of the PMOS. If the power supply is connected reversely, the conduction voltage of the PMOS is less than 0, the PMOS is cut off, the parasitic diode is reversely connected, and the circuit is disconnected, thereby forming protection. The internal resistance Rds of the PMOS tubes is very small, and the internal resistance of some PMOS tubes can be almost ignored, so that the PMOS tubes can be connected with a large-current and high-power load system. The G pole of the PMOS tube Q2 is connected with a resistor R5 in series, in order to prevent the MOS tube from being broken down, a capacitor connected in parallel with the D pole of the PMOS tube Q2 is charged at the moment when current starts to flow, the voltage of the G pole is gradually established, and the soft start function is achieved.
Solar energy sampling circuit links to each other with solar panel interface J3, and solar energy sampling circuit includes diode D1, inductance L1, divider resistance R1 and R2. Solar panel interface J3's 1 foot links to each other with diode D1, prevents that solar panel from connecing the contrary, and 2 feet series inductance L1 carries out voltage filtering, and the parallelly connected divider resistance R1 in both ends, R2 give MCU's AD conversion mouth behind the partial pressure, prevent that the too big MCU pin that burns out of voltage.
The high-power output circuit comprises a resistor R3, a capacitor C2, an optical coupler G2, a capacitor R4 and an MOS (metal oxide semiconductor) tube Q1. The IO port of the MCU is connected with an optocoupler G2 through a current-limiting resistor R3, and an external pull-up resistor R4 drives the MOS tube Q1 to be switched on or switched off, so that the fully-transparent luminous sign is lightened or switched off. Because the voltage output by the solar panel fluctuates, software filtering and different wide threshold delay processing of different lighting and closing function settings are carried out after the AD conversion in the MCU, the whole control is more stable, a high-power output circuit consisting of the optocoupler G2 and the MOS tube Q1 can directly drive a plurality of full-transmission luminous signs, and if the driving capability is not enough, a plurality of paths of high-power output circuits can be connected through the IO port of the MCU, so that the lighting and closing consistency of the full-transmission luminous signs is ensured.
The invention has the following beneficial effects:
the fully-transparent type luminous sign controller provided by the invention is arranged at the same intersection, so that the problem that the fully-transparent type luminous signs in each direction are not synchronous in on and off can be solved;
the high-power supply reverse connection prevention circuit provided by the invention can prevent installation and maintenance personnel from preventing misoperation and damaging the circuit by reversely connecting the positive electrode and the negative electrode of the power supply.
The word "preferred" is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "preferred" is not necessarily to be construed as advantageous over other aspects or designs. Rather, use of the word "preferred" is intended to present concepts in a concrete fashion. The term "or" as used in this application is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless specified otherwise or clear from context, "X employs A or B" is intended to include either of the permutations as a matter of course. That is, if X employs A; b is used as X; or X employs both A and B, then "X employs A or B" is satisfied in any of the foregoing examples.
Also, although the disclosure has been shown and described with respect to one or an implementation, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The present disclosure includes all such modifications and alterations, and is limited only by the scope of the appended claims. In particular regard to the various functions performed by the above described components (e.g., elements, etc.), the terms used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the disclosure. In addition, while a particular feature of the disclosure may have been disclosed with respect to only one of several implementations, such feature may be combined with one or other features of the other implementations as may be desired and advantageous for a given or particular application. Furthermore, to the extent that the terms "includes," has, "" contains, "or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term" comprising.
Each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or a plurality of units or more than one unit are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer-readable storage medium. The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Each apparatus or system described above may execute the storage method in the corresponding method embodiment.
In summary, the above-mentioned embodiment is an implementation manner of the present invention, but the implementation manner of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be regarded as equivalent replacements which are included in the protection scope of the present invention.
Claims (2)
1. The controller is characterized in that the controller is externally connected with a power supply and controls a plurality of full-transparent luminous signs; the fully-transparent luminous label controller comprises a power supply reverse connection prevention circuit, a solar sampling circuit, an MCU and a high-power output circuit; the MCU comprises an AD conversion circuit and a software filtering unit, the software filtering unit prevents the IO port of the MCU from carrying out misoperation on a rear-stage high-power output circuit, and the AD conversion circuit carries out software filtering and delay processing by setting different wide threshold values through distinguishing the functions of lighting and closing;
the anti-reverse connection circuit comprises a PMOS (P-channel metal oxide semiconductor) tube (Q2), a fifth resistor (R5) and a capacitor (C1), wherein a grid (G) of the PMOS tube (Q2) is connected with one end of the fifth resistor (R5) in series, the other end of the fifth resistor (R5) is connected with GND, a drain electrode (D) of the PMOS tube (Q2) is connected with a plus pole powered by a power supply, the capacitor (C1) is connected between the drain electrode (D) and the ground in parallel, and a source electrode (S) supplies power to the fully-transparent luminous sign controller circuit and the high-power output circuit;
an IO port of the MCU is connected with an optocoupler (G2) through a current-limiting resistor (R3), a 4 th pin of the optocoupler (G2) is externally connected with a pull-up resistor (R4) to drive the MOS tube (Q1) to be switched on or switched off, and the fully-transparent type light-emitting label is lightened or switched off; the current-limiting resistor (R3) is also connected with a capacitor (C1), and the other end of the capacitor (C1) is connected with a No. 2 pin of the optocoupler (G2);
the high-power output circuit composed of the optical coupler (G2) and the MOS tube (Q1) directly drives a plurality of full-transparent luminous signs, if the driving capability is not enough, a plurality of paths of the high-power output circuit are connected through an IO port of the MCU, and the lighting and closing consistency of the full-transparent luminous signs is ensured.
2. The controller of claim 1, wherein the AD pin of the MCU is connected to one end of a first resistor (R1) and one end of a second resistor (R2), respectively, the other end of the first resistor (R1) is connected to the cathode of the diode (D1), the other end of the second resistor (R2) is connected to ground and one end of the inductor (L1), the other end of the inductor (L1) is connected to the 2 nd pin of the solar sampling circuit, and the anode of the diode (D1) is connected to the 1 st pin of the solar sampling circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111470039.6A CN114333636B (en) | 2021-12-03 | 2021-12-03 | Full-transparent type luminous label controller |
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| CN202111470039.6A CN114333636B (en) | 2021-12-03 | 2021-12-03 | Full-transparent type luminous label controller |
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| CN114333636B true CN114333636B (en) | 2023-03-24 |
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