CN110969868A - Control method, device and system of traffic signal lamp - Google Patents
Control method, device and system of traffic signal lamp Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for controlling traffic signal lamps, wherein the method comprises the following steps: acquiring the working periods of traffic signal lamps and the working time lengths of signal lamps with different colors in each working period; determining the utilization rates of signal lamps with different colors according to the working periods of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working period; determining current proportionality coefficients of signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors; and controlling the actual working current of the signal lamps with different colors in the traffic signal lamp according to the proportional coefficient of the current of the signal lamps with different colors. The invention adjusts the working current of the signal lamps with different colors according to the different working time lengths of the signal lamps with different colors in the traffic signal lamp, ensures that the service lives of the signal lamps with different colors in the traffic signal lamp are kept consistent, optimizes the equivalent service time of the signal lamps with different colors in the traffic signal lamp, and further improves the utilization rate of the traffic signal lamp.
Description
Technical Field
The invention relates to the field of automatic control, in particular to a method, a device and a system for controlling a traffic signal lamp.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
As is well known, traffic lights adopt lights with different colors to drive vehicles on roads or indicate pedestrians to walk on roads, and play an important role in road safety operation.
Most traffic lights include red, green and yellow lights, and operate in accordance with the basic principles of ① to prohibit traffic or pedestrians when the red light is on, ② to permit traffic or pedestrians when the green light is on, ③ to indicate that the red light is about to change to the green light or the green light is about to change to the red light when the yellow light is on, as shown in fig. 1, a duty cycle of the traffic light is illustrated, wherein the red light and the green light are both turned off when the red light is on, the red light and the green light are both turned off when the yellow light is on, the red light and the green light are both turned off and ready to switch to the green light when the green light is on, the red light and the yellow light are both turned off when the yellow light is on, and the red light and the green light are both turned off and ready to switch to the red light (ready to enter the next duty cycle of the traffic light).
The basic operation rule of the traffic signal lamp shows that the red lamp and the green lamp are lighted and used most frequently, and the working time is longer; and the yellow lamp is only lighted in the switching process of the red lamp and the green lamp, so that the utilization rate is lower, and the working time is shorter. Generally, the yellow light is lit for 3 seconds during one duty cycle of the traffic signal lamp.
The utilization rates of signal lamps with different colors are different, and the service lives of the signal lamps are also different, so that the red light and the green light in the conventional traffic signal lamp can easily reach the service lives of the signal lamps, and the whole traffic signal lamp cannot work due to damage; the yellow lamp has short working time and is difficult to reach the service life. When the traffic signal lamp is damaged, the traffic signal lamp can only be scrapped integrally, so that the utilization rates of signal lamps with different colors in the traffic signal lamp are inconsistent due to the working mode of the existing traffic signal lamp, and the waste of components can be generated.
Disclosure of Invention
The embodiment of the invention provides a control method of a traffic signal lamp, which is used for solving the technical problem that the service life of the traffic signal lamp is lower as the service life of signal lamps with different colors in the traffic signal lamp is kept consistent by reducing the service life of the signal lamps with shorter working time in the traffic signal lamp in the prior art, and the service life of the whole traffic signal lamp is shorter, and the method comprises the following steps: acquiring the working periods of traffic signal lamps and the working time lengths of signal lamps with different colors in each working period; determining the utilization rates of signal lamps with different colors according to the working periods of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working period; determining current proportionality coefficients of signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors; and controlling the actual working current of the signal lamps with different colors in the traffic signal lamp according to the proportional coefficient of the current of the signal lamps with different colors.
The embodiment of the invention also provides a control device of a traffic signal lamp, which is used for solving the technical problem that the service life of the traffic signal lamp is lower as the service life of signal lamps with different colors in the traffic signal lamp is kept consistent by reducing the service life of the signal lamps with shorter working time in the traffic signal lamp in the prior art, and the service life of the whole traffic signal lamp is lower, wherein the control device comprises: the data acquisition module is used for acquiring the working cycles of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working cycle; the first data processing module is used for determining the utilization rates of the signal lamps with different colors according to the working periods of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working period; the second data processing module is used for determining the current proportion coefficients of the signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors; and the control module is used for controlling the actual working current of the signal lamps with different colors in the traffic signal lamp according to the proportional coefficient of the current of the signal lamps with different colors.
The embodiment of the invention also provides a control system of a traffic signal lamp, which is used for solving the technical problem that the service life of the traffic signal lamp is low as the service life of signal lamps with different colors in the traffic signal lamp is consistent by reducing the service life of the signal lamp with short working time in the traffic signal lamp in the prior art, and the service life of the whole traffic signal lamp is low, wherein the control system comprises: traffic lights and controllers; wherein, traffic signal lamp includes: the signal lamps in various colors have different working time lengths; the controller is communicated with the traffic signal lamp and used for obtaining the working period of the traffic signal lamp and the working time lengths of the different color signal lamps in each working period, determining the utilization rates of the different color signal lamps according to the working period of the traffic signal lamp and the working time lengths of the different color signal lamps in each working period, further determining the current proportionality coefficients of the different color signal lamps according to the utilization rates and rated working currents of the different color signal lamps, and controlling the actual working currents of the different color signal lamps in the traffic signal lamp according to the lamp current proportionality coefficients of the different color signal lamps.
The embodiment of the invention also provides computer equipment, which is used for solving the technical problem that the service life of signal lamps with different colors in the traffic signal lamp is kept consistent by reducing the service life of the signal lamp with shorter working time in the traffic signal lamp in the prior art, so that the service life of the whole traffic signal lamp is lower.
Embodiments of the present invention further provide a computer-readable storage medium, which is used to solve the technical problem in the prior art that the service life of signal lamps with different colors in a traffic signal lamp is kept consistent by reducing the service life of the signal lamp with a short working time in the traffic signal lamp, so that the service life of the traffic signal lamp is low as a whole.
In the embodiment of the invention, after the working period of the traffic signal lamp and the working time lengths of the signal lamps with different colors in each working period are obtained, the utilization rates of the signal lamps with different colors are determined according to the working period of the traffic signal lamp and the working time lengths of the signal lamps with different colors in each working period, the current proportionality coefficients of the signal lamps with different colors are determined by combining the rated working currents of the signal lamps with different colors, and then the actual working currents of the signal lamps with different colors in the traffic signal lamp are controlled according to the current proportionality coefficients of the signal lamps with different colors, so that the service lives of the signal lamps with different colors in the traffic signal lamp with different working time.
By the embodiment of the invention, the working currents of the signal lamps with different colors are adjusted according to the different working time lengths of the signal lamps with different colors in the traffic signal lamp, so that the service lives of the signal lamps with different colors in the traffic signal lamp can be kept consistent, the equivalent service time of the signal lamps with different colors in the traffic signal lamp is optimized, and the utilization rate of the traffic signal lamp is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
FIG. 1 is a schematic diagram of a duty cycle of a traffic signal provided in the prior art;
fig. 2 is a flowchart of a method for controlling a traffic signal lamp according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the operating time periods of signal lamps with different colors in a traffic signal lamp according to an embodiment of the present invention;
FIG. 4 is a flow chart of a preferred method for controlling a traffic signal lamp according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a control device of a traffic signal lamp according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a control system of a traffic signal lamp according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In the description of the present specification, the terms "comprising," "including," "having," "containing," and the like are used in an open-ended fashion, i.e., to mean including, but not limited to. Reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the embodiments is for illustrative purposes to illustrate the implementation of the present application, and the sequence of steps is not limited and can be adjusted as needed.
An embodiment of the present invention provides a method for controlling a traffic light, and fig. 2 is a flowchart of the method for controlling a traffic light, where as shown in fig. 2, the method includes the following steps:
s201, acquiring the work cycle of the traffic signal lamp and the work time of the signal lamp with different colors in each work cycle.
It should be noted that the traffic signal lamp in the embodiment of the present invention is a signal lamp for directing traffic operation, and includes, but is not limited to, a motor vehicle signal lamp, a non-motor vehicle signal lamp, a crosswalk signal lamp, a direction indicator lamp (arrow signal lamp), a lane signal lamp, a flashing warning signal lamp, a signal lamp at a crossing of a road and a railway plane, and the like. Traffic lights typically include red, green, and yellow lights, where a red light indicates no traffic, a green light indicates permitted traffic, and a yellow light indicates warning.
It should be noted that the traffic signal lamp in the embodiment of the present invention is not limited to the signal lamp including three colors of red, green, and yellow, and the signal lamp of the same model has different service lives due to different operating durations, and in order to solve the problem that the signal lamp with longer operating duration reaches the service life and the signal lamp with shorter operating duration does not reach the service life in the existing traffic signal lamp, the traffic signal control method provided in the embodiment of the present invention is intended to protect the signal lamp with different operating durations from keeping the same service life by controlling the actual operating current of the signal lamp with different operating durations.
S202, determining the utilization rates of the signal lamps with different colors according to the working periods of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working period.
In one embodiment, the above S202 may calculate the usage rates of the traffic signal lamps with different colors by the following formula:
wherein, ηiIndicating the utilization rates of signal lamps with different colors; t is tiThe working time of the signal lamp with the ith color is represented; t is ttotalIndicating the duty cycle of the traffic signal light.
Taking a traffic signal lamp including a red light, a yellow light and a green light as an example, fig. 3 is a schematic diagram of the working time periods of different color signal lamps in the traffic signal lamp provided in the embodiment of the present invention, as shown in fig. 3, tredThe working time of the red lamp is the unit of second; t is tgrnThe working time of the green light is the unit of second; t is tyelThe working time of the yellow lamp is the unit of second; the duty cycle of the whole traffic signal lamp is ttotalIt can be calculated by the following formula:
ttotal＝tred+tgrn+2tyel(2)
the utilization rate of each signal lamp, i.e. the operating time of the signal lamp divided by the operating cycle time of the whole traffic signal lamp, is as follows:
from equation (3) it can be derived:
tred＝ηred×ttotal(6)
from equation (4) it can be derived:
tgrn＝ηgrn×ttotal(7)
from equation (5) it can be derived:
tyel＝ηyel×ttotal(8)
table 1 shows three typical traffic signal operation modes, and by calculating the usage rate of each signal lamp, it can be seen that the usage rate of the yellow light is about 10% of the usage rate of the red and green lights, which is much lower than the average usage rate, so that when the red and green lights of the traffic signal lamp reach the service life, the yellow light can continue to operate for a long time, and can reach the service life. Some signal lamps do not work in the traffic signal lamp, so that the traffic signal lamp can not complete the function of commanding traffic, and therefore the traffic signal lamp needs to be replaced, maintained or scrapped. Even if the yellow signal light can continue to operate, the entire traffic signal light must be replaced.
TABLE 1 typical traffic signal light worksheet
S203, determining the current proportion coefficients of the signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors.
Specifically, the above S203 may be implemented by the following steps: calculating equivalent working currents of the signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors; sorting the equivalent working currents of the signal lamps with different colors, and selecting the maximum equivalent working current; and calculating the current proportionality coefficients of the signal lamps with different colors according to the maximum equivalent working current.
When the equivalent working currents of the signal lamps with different colors are calculated according to the utilization rates and the rated working currents of the signal lamps with different colors, the equivalent working currents can be calculated through the following formula:
wherein the content of the first and second substances,
representing the equivalent working current of the signal lamp with the ith color;
indicating the rated operating current of the signal lamp of the ith color ηiIndicating the usage of different colored signal lights.
Further, calculating the current proportionality coefficients of the signal lamps with different colors according to the maximum equivalent working current by the following formula:
wherein the content of the first and second substances,
wherein k isiIndicating the current ratio of the i-th color signal lampExample coefficients; i ismaxRepresenting the maximum value of the equivalent operating currents of the differently colored signal lamps.
Generally, the service life of a signal lamp is proportional to the square of the operating current of the signal lamp, namely:
wherein life represents the service life of the signal lamp and the unit is hour; i iseRepresents the rated working current of the signal lamp, and the unit is A; t is teThe rated working time of the signal lamp is represented, and the unit is hour;
for the same signal lamp, the service life is fixed and unchanged if the actual working current I isactLess than rated operating current IeThen the actual service life t can be achievedactThe length is also increased, and the specific formula is as follows:
for red, green, and yellow signal lights, all signal lights have a consistent life when used in the same batch, that is:
lifered＝lifegrn＝lifeyel(14)
aiming at the red signal lamp, the actual working current of the red signal lamp is adjusted, so that the actual working current of the red signal lamp meets the following conditions:
wherein the content of the first and second substances,
the unit is A, and the actual working current of the red signal lamp is A; k is a radical ofredThe ratio coefficient of the lamp current of the red signal is in units of%;
rated working current of a red signal lamp is A;
according to the service life formula of the signal lamp, the following formula can be obtained:
other two color signal lamps may also have the formula shown above, as follows:
wherein the content of the first and second substances,
the unit is A, the actual working current of the green signal lamp; k is a radical ofgrnThe proportional coefficient of the lamp current of the green signal is in unit of percent;
rated working current of green signal lamp, unit is A;
the unit is A, and the unit is the actual working current of the yellow signal lamp; k is a radical ofyelThe ratio coefficient of the lamp current is a yellow signal, and the unit is%;
rated working current of the yellow signal lamp is A;
in order to make the service life of the red, green and yellow signal lamps the same, the following formula can be obtained:
the following formula can be obtained through simplification:
further derivation yields the formula:
defining equivalent use current I of signal lampequThe parameter represents the actual use condition of the signal lamp, and the specific formula is as follows:
fig. 4 is a flowchart of a preferred method for controlling a traffic signal lamp according to an embodiment of the present invention, and the operating current scaling factors of the red, green, and yellow signal lamps may be set through the flowchart shown in fig. 4. As shown in fig. 4, the respective operating time lengths (in seconds) of the red light, the green light and the yellow light are received according to a complete working cycle of the traffic light. According to the working time lengths of the signal lamps with the three colors, the working period of the traffic signal lamp can be obtained; then respectively calculating the utilization rates of the red light, the green light and the yellow light; receiving rated working current (unit is A) of a red lamp, a green lamp and a yellow lamp which are input from the outside; respectively calculating equivalent use currents I of red lamps, green lamps and yellow lampsequThe equivalent use currents of the three signal lamps are sequentially
The maximum value of the 3 currents, expressed as I, is selected with the unit of AmaxThe unit is A, namely:
according to the maximum equivalent use current I of the signal lampmaxRespectively calculate redThe current proportion coefficients of the color signal lamp, the green signal lamp and the yellow signal lamp are as follows:
and S204, controlling the actual working current of the signal lamps with different colors in the traffic signal lamp according to the proportional coefficient of the lamp currents with different colors.
Specifically, after determining a current scaling factor capable of keeping the service lives of different color signal lamps in the traffic signal lamp consistent, the actual operating current of each color signal lamp is controlled according to the current scaling factor of each color signal lamp.
As can be seen from the above, according to the control method of the traffic signal lamp provided in the embodiment of the present invention, after the working cycle of the traffic signal lamp and the working time lengths of the different color signal lamps in each working cycle are obtained, the usage rates of the different color signal lamps are determined according to the working cycle of the traffic signal lamp and the working time lengths of the different color signal lamps in each working cycle, the current proportionality coefficients of the different color signal lamps are determined by combining the rated working currents of the different color signal lamps, and then the actual working currents of the different color signal lamps in the traffic signal lamp are controlled according to the lamp current proportionality coefficients of the different color signal lamps, so that the service lives of the different color signal lamps in the traffic signal lamp with different working time.
By the control method of the traffic signal lamp provided by the embodiment of the invention, the working currents of the signal lamps with different colors are adjusted according to different working time lengths of the signal lamps with different colors in the traffic signal lamp, so that the service lives of the signal lamps with different colors in the traffic signal lamp can be kept consistent, the equivalent service time of the signal lamps with different colors in the traffic signal lamp is optimized, and the utilization rate of the traffic signal lamp is improved.
Based on the same inventive concept, the embodiment of the invention also provides a control device of the traffic signal lamp, such as the following embodiments. Because the principle of solving the problems of the embodiment of the device or the system is similar to the control method of the traffic signal lamp, the implementation of the embodiment of the device can refer to the implementation of the method, and repeated parts are not described again.
Fig. 5 is a schematic diagram of a control device of a traffic signal lamp provided in an embodiment of the present invention, as shown in fig. 5, the device includes: the data acquisition module 51 is used for acquiring the working cycles of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working cycle; the first data processing module 52 is configured to determine the usage rates of the signal lamps with different colors according to the working periods of the traffic signal lamps and the working durations of the signal lamps with different colors in each working period; the second data processing module 53 is configured to determine current proportionality coefficients of signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors; and the control module 54 is used for controlling the actual working currents of the signal lamps with different colors in the traffic signal lamp according to the proportional coefficients of the lamp currents with the signal lamps with different colors.
Alternatively, the first data processing module 52 may be configured to calculate the usage rates of the signal lamps with different colors according to the formula (1).
Specifically, the second data processing module 53 may be configured to calculate equivalent working currents of the signal lamps with different colors according to the usage rates and rated working currents of the signal lamps with different colors, sort the equivalent working currents of the signal lamps with different colors, select the maximum equivalent working current, and further calculate the current proportionality coefficients of the signal lamps with different colors according to the maximum equivalent working current. Alternatively, the second data processing module 53 may be configured to calculate equivalent operating currents of the different-color signal lamps by the above formula (9), and calculate current proportionality coefficients of the different-color signal lamps by the above formula (10).
As can be seen from the above, the control device for a traffic signal lamp provided in the embodiment of the present invention obtains the working periods of the traffic signal lamp and the working durations of the signal lamps with different colors in each working period through the data obtaining module 51, the first data processing module 52 determines the utilization rate of the signal lamps with different colors according to the working periods of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working period, the current proportion coefficients of the signal lamps with different colors are determined through the second data processing module 53 according to the utilization rates and rated working currents of the signal lamps with different colors, and then the control module 54 controls the actual working currents of the signal lamps with different colors in the traffic signal lamp according to the proportional coefficients of the lamp currents of the signal lamps with different colors, so that the service lives of the signal lamps with different colors in the traffic signal lamp in different working time periods can be kept consistent.
By the control device of the traffic signal lamp provided by the embodiment of the invention, the working currents of the signal lamps with different colors are adjusted according to different working time lengths of the signal lamps with different colors in the traffic signal lamp, so that the service lives of the signal lamps with different colors in the traffic signal lamp can be kept consistent, the equivalent service time of the signal lamps with different colors in the traffic signal lamp is optimized, and the utilization rate of the traffic signal lamp is improved.
Based on the same inventive concept, the embodiment of the invention also provides a control system of a traffic signal lamp, such as the following embodiments. Because the principle of solving the problems of the embodiment of the system is similar to the control method of the traffic signal lamp, the implementation of the embodiment of the system can refer to the implementation of the method, and repeated parts are not described again.
Fig. 6 is a schematic diagram of a control system of a traffic signal lamp provided in an embodiment of the present invention, as shown in fig. 6, the system includes: a traffic signal 10 and a controller 20.
Wherein, traffic signal lamp includes: signal lamps of a plurality of colors (for example, a red lamp 10a, a green lamp 10b, and a yellow lamp 10c shown in fig. 6), and each of the color signal lamps has a different operation time period; the controller is communicated with the traffic signal lamp and used for obtaining the working period of the traffic signal lamp and the working time lengths of the different color signal lamps in each working period, determining the utilization rates of the different color signal lamps according to the working period of the traffic signal lamp and the working time lengths of the different color signal lamps in each working period, further determining the current proportionality coefficients of the different color signal lamps according to the utilization rates and rated working currents of the different color signal lamps, and controlling the actual working currents of the different color signal lamps in the traffic signal lamp according to the lamp current proportionality coefficients of the different color signal lamps.
It should be noted that, in the embodiment of the present invention, the controller 20 may be a local controller connected to the traffic light by a wire, or may be a remote controller connected to the traffic light by a wireless network, for example, an intelligent device such as a mobile phone connected to the traffic light by a network in fig. 6.
Specifically, the controller 20 may be configured to calculate equivalent working currents of signal lamps with different colors according to the usage rates and rated working currents of the signal lamps with different colors, sort the equivalent working currents of the signal lamps with different colors, select the maximum equivalent working current, and further calculate the current proportionality coefficients of the signal lamps with different colors according to the maximum equivalent working current. Optionally, the controller 20 may also be configured to calculate the usage rates of the signal lights with different colors by the above formula (1); calculating the equivalent working currents of the signal lamps with different colors through the formula (9), and calculating the current proportionality coefficients of the signal lamps with different colors through the formula (10).
As can be seen from the above, in the control system of the traffic signal lamp provided in the embodiment of the present invention, after the working cycle of the traffic signal lamp 10 and the working durations of the different color signal lamps in each working cycle are obtained, the controller 20 determines the usage rates of the different color signal lamps according to the working cycle of the traffic signal lamp 10 and the working durations of the different color signal lamps in each working cycle, determines the current proportionality coefficients of the different color signal lamps by combining the rated working currents of the different color signal lamps, and then controls the actual working currents of the different color signal lamps in the traffic signal lamp 10 according to the current proportionality coefficients of the different color signal lamps, so that the service lives of the different color signal lamps in the traffic signal lamp 10 with different working durations can be kept consistent.
By the control system of the traffic signal lamp provided by the embodiment of the invention, the working currents of the signal lamps with different colors are adjusted according to different working time lengths of the signal lamps with different colors in the traffic signal lamp, so that the service lives of the signal lamps with different colors in the traffic signal lamp can be kept consistent, the equivalent service time of the signal lamps with different colors in the traffic signal lamp is optimized, and the utilization rate of the traffic signal lamp is improved.
The embodiment of the invention also provides computer equipment for solving the technical problem that the service life of signal lamps with different colors in the traffic signal lamp is kept consistent by reducing the service life of the signal lamp with shorter working time in the traffic signal lamp in the prior art, so that the service life of the whole traffic signal lamp is lower.
The embodiment of the invention also provides a computer readable storage medium, which is used for solving the technical problem that the service life of signal lamps with different colors in the traffic signal lamp is kept consistent by reducing the service life of the signal lamp with shorter working time in the traffic signal lamp in the prior art, so that the service life of the whole traffic signal lamp is lower.
In summary, embodiments of the present invention provide a method, an apparatus, a system, a computer device, and a computer readable storage medium for controlling traffic signal lamps, which adjust operating currents of signal lamps with different colors according to different operating durations of signal lamps with different colors in the traffic signal lamps, so as to ensure that the service lives of the signal lamps with different colors in the traffic signal lamps are consistent, optimize equivalent service times of the signal lamps with different colors in the traffic signal lamps, and thereby improve utilization rates of the traffic signal lamps.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for controlling a traffic signal, comprising:
acquiring the working periods of traffic signal lamps and the working time lengths of signal lamps with different colors in each working period;
determining the utilization rates of the signal lamps with different colors according to the working periods of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working period;
determining current proportionality coefficients of signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors;
and controlling the actual working current of the signal lamps with different colors in the traffic signal lamp according to the proportional coefficient of the current of the signal lamps with different colors.
2. The method of claim 1, wherein determining the current scaling factor for the different color signal lamps based on the usage and rated operating current of the different color signal lamps comprises:
calculating equivalent working currents of the signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors;
sorting the equivalent working currents of the signal lamps with different colors, and selecting the maximum equivalent working current;
and calculating the current proportionality coefficients of the signal lamps with different colors according to the maximum equivalent working current.
3. The method of claim 2, wherein the equivalent operating current for the different color signal lamps is calculated from the usage rates and the rated operating currents of the different color signal lamps by the following formula:
wherein the content of the first and second substances,
representing the equivalent working current of the signal lamp with the ith color;
indicating the rated operating current of the signal lamp of the ith color ηiIndicating the usage of different colored signal lights.
4. A method as claimed in claim 3, characterized in that the current scaling factor for the different-colored signal lamps is calculated from the maximum equivalent operating current by the following formula:
wherein the content of the first and second substances,
wherein k isiThe current proportionality coefficient of the ith color signal lamp is represented; i ismaxRepresenting the maximum value of the equivalent operating currents of the differently colored signal lamps.
5. A method as claimed in any one of claims 1 to 4, characterized in that the usage of the different-colored signal lamps is calculated by the following formula:
wherein, tiThe working time of the signal lamp with the ith color is represented; t is ttotalIndicating the duty cycle of the traffic signal light.
6. A control apparatus for a traffic signal, comprising:
the data acquisition module is used for acquiring the working cycles of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working cycle;
the first data processing module is used for determining the utilization rates of the signal lamps with different colors according to the working periods of the traffic signal lamps and the working time lengths of the signal lamps with different colors in each working period;
the second data processing module is used for determining the current proportion coefficients of the signal lamps with different colors according to the utilization rates and rated working currents of the signal lamps with different colors;
and the control module is used for controlling the actual working current of the signal lamps with different colors in the traffic signal lamp according to the proportional coefficient of the current of the signal lamps with different colors.
7. The apparatus of claim 6, wherein the second data processing module is further configured to calculate equivalent operating currents of the different-color signal lamps according to the usage rates and rated operating currents of the different-color signal lamps; sorting the equivalent working currents of the signal lamps with different colors, and selecting the maximum equivalent working current; and calculating the current proportionality coefficients of the signal lamps with different colors according to the maximum equivalent working current.
8. A control system for a traffic signal, comprising: traffic lights and controllers;
wherein, the traffic signal lamp includes: the signal lamps in various colors have different working time lengths;
the controller is communicated with the traffic signal lamp and used for obtaining the working period of the traffic signal lamp and the working time of the signal lamp with different colors in each working period, determining the utilization rate of the signal lamp with different colors according to the working period of the traffic signal lamp and the working time of the signal lamp with different colors in each working period, further determining the current proportionality coefficient of the signal lamp with different colors according to the utilization rate and the rated working current of the signal lamp with different colors, and controlling the actual working current of the signal lamp with different colors in the traffic signal lamp according to the current proportionality coefficient of the signal lamp with different colors.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of controlling a traffic signal lamp according to any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program that executes the control method of a traffic signal lamp according to any one of claims 1 to 5.
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