CN112671252A - Direct-current lighting starting control method, device and system - Google Patents
Direct-current lighting starting control method, device and system Download PDFInfo
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Abstract
The invention discloses a direct current lighting starting control method, a direct current lighting starting control device and a direct current lighting starting control system, wherein the method comprises the following steps: acquiring the current total power value of the direct-current lighting load in each area; judging whether the current total power value is larger than a preset total power value or not; if the current total power value is larger than the preset total power value, acquiring a region to be started of the direct-current lighting load and a constant power value; and starting the direct-current lighting load in the corresponding area based on the area to be started of the direct-current lighting load and the constant power value. By the direct-current lighting starting control method, the direct-current lighting starting control device and the direct-current lighting starting control system, the problem of overshoot of starting current of a direct-current lighting system can be effectively solved.
Description
Technical Field
The invention relates to the technical field of illumination, in particular to a direct-current illumination starting control method, device and system.
Background
Most of driving power supplies of the existing high-power LED lighting products adopt a mode of AC/DC conversion constant current output, the requirements of a power grid on power factors and harmonic limit values of lamps are higher and higher, a power factor correction circuit needs to be added to each high-power lighting lamp power supply, the complexity of power supply design is increased, the reliability is reduced, and the efficiency improvement and the energy conservation of a high-power lighting system are not facilitated.
Adopt the direct current illumination power supply can solve or optimize above-mentioned problem, but current direct current lighting system only changes alternating current power supply system return circuit into direct current power supply, and the power of lamps and lanterns still adopts the alternating current design thinking, for example: a rectifier bridge and a thermistor start current limiting device exist in a power supply, and the problem of overshoot of starting current of a direct current system is not effectively solved.
Aiming at the problem that the starting current of a high-power direct-current lighting system in the prior art is overlarge, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a direct-current lighting starting control method, a direct-current lighting starting control device and a direct-current lighting starting control system, and aims to solve the problem that a high-power direct-current lighting system in the prior art is overlarge in starting current.
In order to solve the above technical problem, the present invention provides a dc lighting start control method, including:
acquiring the current total power value of the direct-current lighting load in each area;
judging whether the current total power value is larger than a preset total power value or not;
if the current total power value is larger than the preset total power value, acquiring a region to be started of the direct-current lighting load and a constant power value;
and starting the direct-current lighting load of the corresponding area based on the area to be started of the direct-current lighting load and the constant power value.
Further, the method also comprises the following steps:
and if the current total power value does not exceed the preset total power value, controlling the first direct current bus to operate at a stable voltage.
Further, after the controlling the first dc bus to operate at a stable voltage if the current total power value does not exceed the preset total power value, the method further includes:
acquiring a region to be started of a direct-current lighting load;
calculating a required load power value based on a preset power value corresponding to the area to be started of the direct current lighting load;
calculating a constant current starting current value based on the required load power value;
and starting the direct current lighting load in the corresponding area based on the area to be started of the direct current lighting load and the constant current starting current value.
Further, the method also comprises the following steps: and when the direct current lighting load in the corresponding area is started, controlling the first direct current bus to operate at a stable voltage.
In order to achieve the above object, the present invention further provides a dc lighting start control device, including:
the first acquisition module is used for acquiring the current total power value of the direct-current lighting load in each area;
the judging module is used for judging whether the current total power value is larger than a preset total power value or not;
the second obtaining module is used for obtaining a region to be started and a constant power value of the direct-current lighting load when the current total power value is larger than the preset total power value;
and the constant power starting module is used for starting the direct current lighting load in the corresponding area based on the area to be started of the direct current lighting load and the constant power value.
Further, the method also comprises the following steps:
and the constant voltage operation module is used for controlling the first direct current bus to operate at a stable voltage when the current total power value does not exceed the preset total power value.
Further, the method also comprises the following steps:
the third acquisition module is used for acquiring a region to be started of the direct-current lighting load;
the first calculation module is used for calculating a required load power value based on a preset power value corresponding to the area to be started of the direct-current lighting load;
the second calculation module is used for calculating a constant current starting current value based on the required load power value;
and the constant current starting module is used for starting the direct current lighting loads in the corresponding areas based on the areas to be started of the direct current lighting loads and the constant current starting current values.
Further, the constant voltage operation module is further configured to control the first dc bus to operate at a stable voltage after the dc lighting load in the corresponding area is started.
In order to achieve the above object, the present invention further provides a dc lighting start control system, including: the direct current illumination starting control device.
Further, the method also comprises the following steps: the system comprises a power supply input module, an acquisition module and a direct-current lighting load;
the power supply input module is connected with one end of the direct-current illumination starting control device and used for providing power supply;
one end of the acquisition module is connected with the other end of the direct-current illumination starting control device, and the other end of the acquisition module is connected with the direct-current illumination load and used for acquiring the electricity utilization data information of the direct-current illumination load.
Further, the method also comprises the following steps: the monitoring system comprises a first communication module and a monitoring center;
the monitoring center is connected with the first communication module and is used for realizing background monitoring;
the first communication module is respectively connected with the acquisition module, the direct-current lighting starting control device and the direct-current lighting load and used for realizing communication connection.
Further, the dc lighting load includes: the LED light source module comprises a filter circuit, a DC/DC circuit, a constant current sampling feedback circuit, an LED light source module and a control module;
one end of the filter circuit is connected with the acquisition module, and the other end of the filter circuit is connected with the first end of the DC/DC circuit and is used for suppressing interference;
the second end of the DC/DC circuit is connected with the first end of the constant current sampling feedback circuit and used for realizing voltage conversion;
the second end of the constant current sampling feedback circuit is connected with the LED light source module, and the third end of the constant current sampling feedback circuit is connected with the control module and used for obtaining sampling current and feeding the sampling current back to the control module;
and the control module is connected with the third end of the DC/DC circuit and is used for realizing constant current control based on the sampling current.
Further, the dc lighting load further includes: a second communication module;
and the second communication module is connected with the constant current sampling feedback circuit and used for realizing communication connection.
Further, the method also comprises the following steps: an input switch;
the input switch is arranged between the power input module and the direct current illumination starting control device and used for providing power-off protection.
Further, the direct-current illumination starting control device is connected with the acquisition module through a first direct-current bus.
Further, the acquisition module is connected with the direct current lighting load through a second direct current bus.
In addition, the invention also provides a computer readable storage medium, which comprises a stored program, wherein when the program runs, the device on which the storage medium is located is controlled to execute the direct current illumination starting control method.
A processor for executing a program, wherein the program executes to perform a dc illumination start control method as described above.
Compared with the prior art, the technical scheme has the advantages that the direct-current lighting starting control method, the device and the system are provided, when the light load is switched to the heavy load, the area to be started is started with the constant power value, the direct-current lighting system is guaranteed to stably run when the load is switched, the starting impact current of the first direct-current bus is reduced, and the problem of overshoot of the starting current of the direct-current lighting system is effectively solved.
Drawings
Fig. 1 is a flowchart of a dc lighting start control method according to an embodiment of the present invention;
fig. 2 is a flowchart of a dc lighting start control method when switching from no-load to loaded according to an embodiment of the present invention;
fig. 3 is a flowchart of another dc lighting start control method according to an embodiment of the present invention;
fig. 4 is a block diagram of a dc lighting start control device according to an embodiment of the present invention;
fig. 5 is a block diagram of a dc lighting start control device when switching from no-load to loaded according to an embodiment of the present invention;
fig. 6 is a block diagram of another dc lighting start control device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a dc lighting start control system according to an embodiment of the present invention;
FIG. 8 is a circuit topology diagram of an exemplary DC lighting activation control apparatus with single-phase AC input according to an embodiment of the present invention;
fig. 9 is a circuit topology diagram example of an acquisition module according to an embodiment of the present invention;
fig. 10 is a schematic diagram illustrating specific module components of a dc lighting load according to an embodiment of the present invention;
FIG. 11 is an exemplary circuit topology of a DC lighting load according to an embodiment of the present invention;
fig. 12 is an overall flowchart of a dc lighting start control method according to an embodiment of the present invention.
Wherein, in fig. 7:
1. a power input module; 2. an input switch; 3. a DC lighting start control device; 4. an acquisition module; 5. a direct current lighting load; 6. a first direct current bus; 7. a second DC bus; 8. a communication link; 9. a first communication module; 10. a monitoring center;
in fig. 10:
12. a filter circuit; 13. a DC/DC circuit; 14. a second communication module; 15. a constant current sampling feedback circuit; 16. an LED light source module; 17. and a control module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe the acquisition modules in the embodiments of the present invention, these acquisition modules should not be limited to these terms. These terms are only used to distinguish the acquisition modules. For example, a first obtaining module may also be referred to as a second obtaining module, and similarly, a second obtaining module may also be referred to as a first obtaining module without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
An embodiment of the present invention provides a flowchart of a dc lighting start control method, as shown in fig. 1, the method includes the following steps:
step S101, acquiring the current total power value of the direct current lighting load of each area;
specifically, the power value of the dc lighting load in each area may be collected by an U, I, P collection module or a module with similar functions, such as a dc meter, so as to calculate the total power value of the dc lighting load in each area.
Step S102, judging whether the current total power value is larger than a preset total power value Pmin;
the preset total power value Pmin is preset according to parameters of the lighting system.
Step S103, if the current total power value is larger than the preset total power value, acquiring a region to be started of the direct current lighting load and a constant power value;
when the total power value is greater than the preset total power value Pmin, it is indicated that a part of the direct current lighting loads in the direct current lighting system are in a turned-on state, and at this time, when the monitoring center or the first communication module receives a control command, that is, when the control command needs to be switched from a light load to a heavy load, the control command carries an area to be started and a preset power value corresponding to the area to be started. And then, acquiring power utilization data information of the direct current lighting loads in each area based on the control command, and calculating a constant power value P1 based on the current total power value of the started direct current lighting loads and the preset power value corresponding to the area to be started.
And step S104, starting the direct current lighting load in the corresponding area based on the area to be started of the direct current lighting load and the constant power value.
The area to be started is started by the constant power limit value P1, the stable operation of the direct current lighting system is ensured during load switching, the starting impact current of the first direct current bus is reduced, and the problem of overshoot of the starting current of the direct current lighting system is effectively solved.
When the total power value does not exceed the preset total power value Pmin, it indicates that the dc lighting system is in an idle state, and at this time, step S200 is executed, and when the current total power value does not exceed the preset total power value, the first dc bus is controlled to operate at a stable voltage.
Example 2
Referring to fig. 2, fig. 2 is a method for controlling starting of dc lighting when switching from no-load to loaded according to an embodiment of the present invention, where the method includes the following steps:
s201, acquiring a region to be started of a direct-current lighting load;
s202, calculating a required load power value based on a preset power value corresponding to a region to be started of the direct-current lighting load;
specifically, when the monitoring center or the first communication module receives a control command, the control command carries an area to be started and a preset power value corresponding to the area to be started, and a load power value required for starting is calculated based on the preset power value.
S203, calculating a constant current starting current value based on the required load power value;
specifically, the method for calculating the constant current starting current value based on the required load power value may be: the method comprises the steps of determining the number of lamps in a direct current lighting load in a region to be started and the power value of a single lamp according to a control command, calculating to obtain the total power value of the direct current lighting load expected to be started, combining a first direct current bus voltage value, calculating to obtain a current value I according to P-U-I, multiplying the current value I by a constant current starting current value setting coefficient N, wherein N can be 3-5 times of the current value I, and further obtaining a constant current starting current value, wherein the coefficient N can be adjusted according to the actual system design condition.
And S204, starting the direct current lighting load in the corresponding area based on the area to be started of the direct current lighting load and the constant current starting current value.
When the load is switched from no load to load, a constant current starting current value I is set based on the required load power value, and constant current starting is realized based on the constant current starting current value I, so that the phenomenon that the current value is overlarge when the load is switched from no load to load is avoided.
Example 3
Referring to fig. 3, fig. 3 is a flowchart of another dc lighting start control method according to an embodiment of the present invention, specifically, on the basis of the above embodiments 1 and 2, the method further includes:
s301: and when the direct current lighting load in the corresponding area is started, controlling the first direct current bus to operate at a stable voltage.
When the load is switched from no load to load, the device is started in a constant current mode; when the light load is switched to the heavy load, the constant-power mode is used for starting, and after the constant-power mode is started, the constant-power mode is switched to the constant-voltage mode for operation, so that the first direct-current bus voltage is stabilized for operation.
In summary, the dc lighting start control method provided by the present invention mainly includes three operation modes:
1. constant-pressure operation mode: when the collected total power value is smaller than a preset total power value Pmin, the system is in an idle state, and the voltage of the output first direct current bus is stable; and when the direct current illumination load is acquired to stably work, entering a constant voltage mode.
2. And (3) constant-current operation mode: when the no-load is switched to the load, the required load power value is calculated according to the area to be started carried in the control command and the preset power value corresponding to the area to be started, so that the constant current starting current value I is set, the voltage of the bus is allowed to fluctuate at the moment, when the output power rises to a certain value, namely after the starting is finished, the constant voltage mode is switched, and the first direct current bus stably runs.
3. Constant power mode of operation: when the light load is switched to the heavy load, the direct current lighting load in a partial area operates at the moment, the relevant power utilization data information of the direct current lighting load in the started area is collected, meanwhile, the constant power value P1 is calculated according to the preset power value corresponding to the area to be started of the direct current lighting load carried in the control command and the power utilization data information of the started part, the direct current lighting load is started in a constant power operation mode, and after the start is completed, the direct current lighting load is switched to a constant voltage mode to stabilize the voltage operation of the first direct current bus.
The whole starting process is based on the conditions of electric energy signals and energy flow, different operation modes are switched, stable operation of the direct-current lighting system during load switching is guaranteed, the starting current overshoot value is reduced, the requirements for type selection of direct-current devices such as a direct-current switch or a contactor are reduced, and the system cost is reduced.
Example 4
Corresponding to the method for controlling the start of the dc lighting introduced in fig. 1, an embodiment of the present invention provides a dc lighting start control device, and fig. 4 is a block diagram of the dc lighting start control device provided in the embodiment of the present invention, where the device includes:
a first obtaining module 101, configured to obtain a current total power value of the direct current lighting load in each area;
specifically, the power value of the dc lighting load in each area may be collected by an U, I, P collection module or a module with similar functions, such as a dc meter, so as to calculate the current total power value of the dc lighting load in each area.
A judging module 102, configured to judge whether the current total power value is greater than a preset total power value Pmin;
the preset total power value Pmin is preset according to parameters of the lighting system.
The second obtaining module 103 is configured to obtain a region to be started and a constant power value of the direct-current lighting load when the current total power value is greater than the preset total power value;
when the total power value is greater than the preset total power value Pmin, it is indicated that a part of the direct current lighting loads in the direct current lighting system are in a turned-on state, and at this time, when the monitoring center or the first communication module receives a control command, that is, when the control command needs to be switched from a light load to a heavy load, the control command carries an area to be started and a preset power value corresponding to the area to be started. And then, acquiring power utilization data information of the direct current lighting loads in each area based on the control command, and calculating a constant power value P1 based on the current total power value of the started direct current lighting loads and the preset power value corresponding to the area to be started.
And the constant power starting module 104 is configured to start the dc lighting load in the corresponding region based on the region to be started of the dc lighting load and the constant power value.
The area to be started is started by the constant power limit value P1, the stable operation of the direct current lighting system is ensured during load switching, the starting impact current of the first direct current bus is reduced, and the problem of overshoot of the starting current of the direct current lighting system is effectively solved.
When the total power value does not exceed the preset total power value Pmin, it indicates that the dc lighting system is in an idle state, and at this time, the constant voltage operation module 105 is executed and configured to control the first dc bus to operate at a stable voltage when the current total power value does not exceed the preset total power value.
Example 5
Referring to fig. 5, fig. 5 is a block diagram of a dc lighting start control device when switching from idle to loaded according to an embodiment of the present invention, where the device includes:
a third obtaining module 106, configured to obtain a region to be started by the dc lighting load;
the first calculating module 107 is configured to calculate a required load power value based on a preset power value corresponding to a region to be started by the dc lighting load;
specifically, when the monitoring center or the first communication module receives a control command, the control command carries an area to be started and a preset power value corresponding to the area to be started, and a load power value required for starting is calculated based on the preset power value.
The second calculating module 108 is used for calculating a constant current starting current value based on the required load power value;
specifically, the specific method for calculating the constant current starting current value based on the required load power value may be: the method comprises the steps of determining the number of lamps in a direct current lighting load in a region to be started and the power value of a single lamp according to a control command, calculating to obtain the total power value of the direct current lighting load expected to be started, combining a first direct current bus voltage value, calculating to obtain a current value I according to P-U-I, multiplying the current value I by a constant current starting current value setting coefficient N, wherein N can be 3-5 times of the current value I, and further obtaining a constant current starting current value, wherein the coefficient N can be adjusted according to the actual system design condition.
And the constant current starting module 109 is used for starting the direct current lighting loads in the corresponding areas based on the areas to be started of the direct current lighting loads and the constant current starting current values.
When the load is switched from no load to load, a constant current starting current value I is set based on the required load power value, and constant current starting is realized based on the constant current starting current value I, so that the phenomenon that the current value is overlarge when the load is switched from no load to load is avoided.
Example 6
Referring to fig. 6, fig. 6 is a block diagram of another structure of a dc lighting start control device according to an embodiment of the present invention, specifically, on the basis of the above embodiments 4 and 5, the constant voltage operation module 5 is further configured to control the first dc bus to operate at a stable voltage after the dc lighting loads in the corresponding area are started.
When the load is switched from no load to load, the device is started in a constant current mode; when the light load is switched to the heavy load, the constant-power mode is used for starting, and after the constant-power mode is started, the constant-power mode is switched to the constant-voltage mode for operation, so that the first direct-current bus voltage is stabilized for operation.
In summary, the operation process mainly includes three operation modes:
1. constant-pressure operation mode: when the collected total power value is smaller than a preset total power value Pmin, the system is in an idle state, and the voltage of the output first direct current bus is stable; and when the direct current illumination load is acquired to stably work, entering a constant voltage mode.
2. And (3) constant-current operation mode: when the no-load is switched to the load, the required load power value is calculated according to the area to be started carried in the control command and the preset power value corresponding to the area to be started, so that the constant current starting current value I is set, the voltage of the bus is allowed to fluctuate at the moment, when the output power rises to a certain value, namely after the starting is finished, the constant voltage mode is switched, and the first direct current bus stably runs.
3. Constant power mode of operation: when the light load is switched to the heavy load, the direct current lighting load in a partial area operates at the moment, the relevant power utilization data information of the direct current lighting load in the started area is collected, meanwhile, the constant power value P1 is calculated according to the preset power value corresponding to the area to be started of the direct current lighting load carried in the control command and the power utilization data information of the started part, the direct current lighting load is started in a constant power operation mode, and after the start is completed, the direct current lighting load is switched to a constant voltage mode to stabilize the voltage operation of the first direct current bus.
The whole starting process is based on the conditions of electric energy signals and energy flow, different operation modes are switched, stable operation of the direct-current lighting system during load switching is guaranteed, the starting current overshoot value is reduced, the requirements for type selection of direct-current devices such as a direct-current switch or a contactor are reduced, and the system cost is reduced.
Example 7
In order to solve the problem of overshoot of the starting current of the dc lighting system in the prior art, an embodiment of the present invention further provides a dc lighting starting control system, including: the direct current illumination starting control device.
According to the technical scheme provided by the embodiment of the invention, the area to be started is started by the constant power value P1, so that the stable operation of the direct current lighting system is ensured during load switching, the starting impact current of the first direct current bus is reduced, and the problem of overshoot of the starting current of the direct current lighting system is effectively solved.
Example 8
Referring to fig. 7, fig. 7 is a schematic diagram of a dc lighting start control system according to an embodiment of the present invention, where the system includes: the direct-current lighting starting control device 3, the power input module 1, the acquisition module 4 and the direct-current lighting load 5;
the power input module 1 is connected with one end of the direct-current illumination starting control device 3 and used for providing power;
the power input module 1 may be an ac power input module 1, or may be a dc power input module 1, which provides an energy source for the lighting system.
One end of the acquisition module 4 is connected with the other end of the direct current illumination starting control device 3, and the other end of the acquisition module 4 is connected with the direct current illumination load 5 and used for acquiring the electricity utilization data information of the direct current illumination load 5.
Specifically, the direct-current lighting starting control device 3 is connected with the acquisition module 4 through a first direct-current bus 6, and the acquisition module 4 is connected with the direct-current lighting starting control device 3 through a second direct-current bus 7.
The electricity utilization data information can be acquired by an U, I, P acquisition module or a smart meter, and when the electricity utilization data information is started at constant power, the size of the constant power value P1 can be dynamically adjusted according to the information acquired by the U, I, P acquisition module or the smart meter. In addition, the partition starting can be realized according to the area to be started in the control command, and the stress of the direct current protection and the switch device is reduced.
For the sake of system safety, an input switch 2, typically a circuit breaker or an air switch, may be installed between the power input module 1 and the dc lighting activation control device 3, and may be protected from power failure in case of a fault or during maintenance.
Referring to fig. 7, each area is provided with an acquisition module 4 to acquire power consumption information of the dc lighting load 5 in the area, specifically, the acquisition module 4 may be an U, I, P acquisition module, and may also be an intelligent electric meter.
In the system, a direct current lighting starting control device 3 is a core, and has the main function of converting input voltage into controllable and adjustable direct current and converting input electric energy according to control requirements. Taking single-phase alternating current input as an example, as shown in fig. 8, a full-bridge controllable rectification circuit composed of Q1, Q2, Q3 and Q4 switching tubes is adopted, a current sensor, a resistor R4, a resistor R5 voltage division sampling circuit, an MCU and a communication circuit are built in, the MCU calculates the voltage, current and power, and the MCU controls 4 paths of PWM to adjust the on-off and on-off time of the switching tubes Q1, Q2, Q3 and Q4, so that 3 modes of constant voltage, constant current and constant power output can be realized, and the voltage, current and power of the first dc bus 6 are controlled. As shown in fig. 9, the acquisition module 4 is internally provided with a power supply circuit, a current sensor, an MCU, a communication circuit, a controllable switch S2, an R7, and an R8 resistor voltage division sampling circuit. Current sensor sampling loop's current value I through resistance partial pressure sampling loop voltage value U, MCU calculation power P, with U, I, P information pass through communication link 8 and transmit to first communication module 9, second direct current bus 7 provides the energy for direct current lighting load 5, but a plurality of direct current lighting load 5 of parallelly connected realize multizone illumination. The MCU may switch the local dc lighting load 5 on and off by controlling the controllable switch S2.
According to the direct-current lighting starting control system provided by the embodiment of the invention, the power utilization data information is acquired for the direct-current lighting load 5 in a partition manner, the lamp is finely controlled based on the power utilization data information, the energy is accurate to each loop and each direct-current lighting load, the fine management of regional lighting can be realized, the waste of lighting power utilization is avoided, and meanwhile, the system operation cost can be reduced.
Preferably, on the basis of the above embodiment, the method further includes: a first communication module 9 and a monitoring center 10;
the monitoring center 10 is connected with the first communication module 9 and is used for realizing background monitoring;
the first communication module 9 is respectively connected with the acquisition module 4, the direct current lighting starting control device 3 and the direct current lighting load 5, and information interaction among the modules is realized through the first communication module 9 and the communication link 8.
The communication link 8 may adopt a combination of wired communication and wireless communication, and preferably communicates with the dc lighting load 5 in a wireless communication manner.
According to the technical scheme provided by the embodiment of the invention, a power input module 1 is connected to a direct-current lighting starting control device 3 through an input switch 2, converts a power supply into stable direct current, is connected to an acquisition module 4 through a first direct-current bus 6, acquires the voltage and the current of a bus loop, calculates to obtain a power value, and is connected to a direct-current lighting load 5 through a second direct-current bus 7. The modules realize information interaction through a communication link 8 and a first communication module 9.
Referring to fig. 12, after the monitoring center 10 or the first communication module 9 receives a control command for turning on and off the lamp, the area of the dc lighting load is determined based on the control command, the collection module 4 collects power consumption data information of each area, calculates a constant power value at the time of constant-limit start or calculates a constant current start current value at the time of constant-current start based on the power consumption data information, and after the constant power value and the constant current start current value are set, starts the dc lighting load of the corresponding area according to the control command and the set constant power value or constant current start current value. The technical scheme provided by the embodiment of the invention can enter a constant power operation mode, a constant voltage mode and a constant current mode according to requirements so as to inhibit starting impact current.
Wherein, collection module 4 can be U, I, P collection module or smart electric meter, and the constant power value can be adjusted according to the power consumption data information of gathering. In addition, the partitioned starting can be realized according to the area to be started in the control command, the stress of the direct current protection and the switch device is reduced, and the system operation cost is reduced.
Example 9
Referring to fig. 10, in order to further optimize the above technical solution, on the basis of the above embodiment 8, the embodiment of the present invention further discloses a specific module composition of the dc lighting load 5, where the dc lighting load 5 includes: the LED light source circuit comprises a filter circuit 12, a DC/DC circuit 13, a constant current sampling feedback circuit 15, an LED light source module 16 and a control module 17;
one end of the filter circuit 12 is connected with the acquisition module 4, and the other end is connected with the first end of the DC/DC circuit 13 and used for suppressing interference;
the second end of the DC/DC circuit 13 is connected with the first end of the constant current sampling feedback circuit 15 and used for realizing voltage conversion;
the second end of the constant current sampling feedback circuit 15 is connected with the LED light source module 16, and the third end of the constant current sampling feedback circuit 15 is connected with the control module 17, and is used for acquiring sampling current and feeding the sampling current back to the control module 17;
the control module 17 is connected to the third terminal of the DC/DC circuit 13, and is configured to implement constant current control based on the sampling current.
The filter circuit 12 is used for suppressing input and output interference, and the DC/DC circuit 13 is converted into a constant current mode output through the constant current sampling feedback circuit 15 to drive the LED light source module 16 to light.
Specifically, referring to fig. 11, the current is sampled by an R3 resistor, the voltage is sampled by a resistor voltage dividing network R1 and R2, the sampled signal is compared with a reference voltage built in a voltage and current sampling comparison module, the output is connected with an optocoupler, a feedback signal is transmitted to a primary control chip, and the output constant current control is realized by adjusting a switching tube Q5 and a switching tube Q6 through PWM5 and PWM 6.
It should be further noted that, the specific circuit design of each module in the dc lighting load 5 is not limited to the specific circuit composition and the specific connection relationship provided in the embodiment of the present invention, and may also be other circuits that implement the same function.
The second communication module 14 is mainly in communication with the monitoring center 10, and adjusts the LED1 and the LED2 light source modules by changing the reference voltage value of the voltage and current sampling and comparing module. In addition, networking control among the lamps and lanterns can be realized through the second communication module 14, upper layer communication can be realized, and the direct current lighting load can be controlled to realize the functions of switching on and off, dimming and the like. The voltage sampling realizes the overvoltage protection function, and avoids the damage of the LED light source module 16 due to overhigh voltage.
The direct-current lighting load provided by the embodiment of the invention can adopt a simplified power supply scheme, and can improve the conversion efficiency of the lighting power supply because loss devices such as a rectifier bridge, a thermistor and the like can be omitted.
Furthermore, the embodiment of the invention also discloses a computer readable storage medium, the storage medium comprises a stored program, and when the program runs, the device where the storage medium is located is controlled to execute the above direct current illumination starting control method.
In addition, the embodiment of the invention also discloses a processor, wherein the processor is used for running the program, and the program is used for executing the direct-current illumination starting control method during running.
The storage medium stores the program, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (18)
1. A method for controlling the start of a dc lighting system, comprising:
acquiring the current total power value of the direct-current lighting load in each area;
judging whether the current total power value is larger than a preset total power value or not;
if the current total power value is larger than the preset total power value, acquiring a region to be started of the direct-current lighting load and a constant power value;
and starting the direct-current lighting load of the corresponding area based on the area to be started of the direct-current lighting load and the constant power value.
2. The method of claim 1, further comprising:
and if the current total power value does not exceed the preset total power value, controlling the first direct current bus to operate at a stable voltage.
3. The method of claim 2, wherein after controlling the first dc bus to operate at a regulated voltage if the current total power value does not exceed the preset total power value, further comprising:
acquiring a region to be started of a direct-current lighting load;
calculating a required load power value based on a preset power value corresponding to the area to be started of the direct current lighting load;
calculating a constant current starting current value based on the required load power value;
and starting the direct current lighting load in the corresponding area based on the area to be started of the direct current lighting load and the constant current starting current value.
4. The method of claim 1 or 3, further comprising: and when the direct current lighting load in the corresponding area is started, controlling the first direct current bus to operate at a stable voltage.
5. A dc lighting activation control device, comprising:
the first acquisition module is used for acquiring the current total power value of the direct-current lighting load in each area;
the judging module is used for judging whether the current total power value is larger than a preset total power value or not;
the second obtaining module is used for obtaining a region to be started and a constant power value of the direct-current lighting load when the current total power value is larger than the preset total power value;
and the constant power starting module is used for starting the direct current lighting load in the corresponding area based on the area to be started of the direct current lighting load and the constant power value.
6. The apparatus of claim 5, further comprising:
and the constant voltage operation module is used for controlling the first direct current bus to operate at a stable voltage when the current total power value does not exceed the preset total power value.
7. The apparatus of claim 6, further comprising:
the third acquisition module is used for acquiring a region to be started of the direct-current lighting load;
the first calculation module is used for calculating a required load power value based on a preset power value corresponding to the area to be started of the direct-current lighting load;
the second calculation module is used for calculating a constant current starting current value based on the required load power value;
and the constant current starting module is used for starting the direct current lighting loads in the corresponding areas based on the areas to be started of the direct current lighting loads and the constant current starting current values.
8. The apparatus of claim 5 or 7,
the constant voltage operation module is also used for controlling the first direct current bus to operate at a stable voltage after the direct current lighting load in the corresponding area is started.
9. A dc lighting activation control system, comprising: the direct current illumination start-up control device according to any one of claims 5 to 8.
10. The system of claim 9, further comprising: the system comprises a power supply input module, an acquisition module and a direct-current lighting load;
the power supply input module is connected with one end of the direct-current illumination starting control device and used for providing power supply;
one end of the acquisition module is connected with the other end of the direct-current illumination starting control device, and the other end of the acquisition module is connected with the direct-current illumination load and used for acquiring the electricity utilization data information of the direct-current illumination load.
11. The system of claim 10, further comprising: the monitoring system comprises a first communication module and a monitoring center;
the monitoring center is connected with the first communication module and is used for realizing background monitoring;
the first communication module is respectively connected with the acquisition module, the direct-current lighting starting control device and the direct-current lighting load and used for realizing communication connection.
12. The system of claim 10 or 11, wherein the dc lighting load comprises: the LED light source module comprises a filter circuit, a DC/DC circuit, a constant current sampling feedback circuit, an LED light source module and a control module;
one end of the filter circuit is connected with the acquisition module, and the other end of the filter circuit is connected with the first end of the DC/DC circuit and is used for suppressing interference;
the second end of the DC/DC circuit is connected with the first end of the constant current sampling feedback circuit and used for realizing voltage conversion;
the second end of the constant current sampling feedback circuit is connected with the LED light source module, and the third end of the constant current sampling feedback circuit is connected with the control module and used for obtaining sampling current and feeding the sampling current back to the control module;
and the control module is connected with the third end of the DC/DC circuit and is used for realizing constant current control based on the sampling current.
13. The system of claim 12, wherein the dc lighting load further comprises: a second communication module;
and the second communication module is connected with the constant current sampling feedback circuit and used for realizing communication connection.
14. The system of any one of claims 10, 11 or 13, further comprising: an input switch;
the input switch is arranged between the power input module and the direct current illumination starting control device and used for providing power-off protection.
15. The system of claim 10, wherein the dc illumination activation control device is coupled to the collection module via a first dc bus.
16. The system of claim 10 or 15, wherein the collection module and the dc lighting load are connected by a second dc bus.
17. A computer-readable storage medium, comprising a stored program, wherein when the program runs, the apparatus on which the storage medium is located is controlled to execute a dc lighting activation control method according to any one of claims 1 to 4.
18. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute a dc illumination start control method according to any one of claims 1 to 4 when running.
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