Illuminating lamp and power calibration system and method thereof

Abstract

The invention provides a lighting lamp and a power calibration system and method thereof, the lighting lamp power calibration system comprises a lighting lamp, a control terminal and a function test module, the lighting lamp comprises a lamp body, a radio frequency module built in the lamp body, a power supply driving module and a data storage module, and the data storage module stores lamp data information; the radio frequency module establishes communication interaction connection between the data storage module, the power supply driving module and the function test module and external equipment; the power test module is externally connected to the lighting lamp to collect real-time actual power of the lighting lamp in a power-on working state, and the control terminal is in communication connection with the lighting lamp and obtains real-time PWM adjustment parameters corresponding to the real-time actual power based on a preset algorithm; the power supply driving module executes the corresponding real-time PWM adjustment instruction to change the PWM output frequency or duty ratio; the relative error value between the nominal power and the actual power of the lighting lamp is adjusted to be within the area range of [0, 1%], so that the lighting lamp can have good performance and functions.

Description

Technical Field

[0001] The present invention relates to the technical field of power calibration of lighting fixtures, and particularly to a lighting fixture and its power calibration system and method. Background Art

[0002] The nominal power of a lighting fixture is the value marked by the manufacturer on the product shell, instruction manual or energy efficiency label, which refers to the theoretical power value calibrated according to the design parameters of the fixture under standard test conditions and represents the energy consumption level of the fixture under ideal working conditions. The actual power is the real-time power consumption of the lighting fixture in the actual use environment, and there are situations where it is higher or lower than the nominal power. Regarding the error between the nominal power and the actual power of lighting fixtures, national standards and industry standards have made clear regulations. For example, in GB / T 24908-2010 "Performance Requirements for Self-ballasted LED Lamps for General Lighting", it is stipulated that when the lamp works under rated voltage and rated frequency, the difference between the actual power consumption and the rated power should not be greater than 15% or 0.5W (whichever is larger); in the industry standard IEC 62722-1 "Lamp Performance - Part 1: General Requirements", it is required that the deviation between the nominal value and the actual value of the electrical parameters of the lamp should not be greater than 10%.

[0003] In the existing lighting fixture technology, the error between the nominal power and the actual power is usually between 10% - 15%. Although this error range is within the allowable range of domestic standards, it has a significant impact on the performance and energy efficiency of lighting fixtures, especially high-end products, which is specifically manifested in:

[0004] 1) Energy waste: When the actual power is higher than the nominal power, unnecessary energy consumption is increased, which does not meet the requirements of energy conservation and emission reduction;

[0005] 2) Unstable lighting effect: When the actual power is lower than the nominal power, it may lead to insufficient lighting brightness and affect the lighting quality;

[0006] 3) Shortened service life: The power deviation may cause the fixture to work at a non-rated power for a long time, affecting the service life of the fixture;

[0007] 4) Safety issues: The power deviation may cause circuit overload or underload, increasing electrical safety hazards.

[0008] Moreover, the existing relative error values between the nominal power and the actual power cannot meet the precise lighting requirements of application scenarios with high requirements such as medical treatment, scientific research, and high-end commercial displays.

[0009] Based on the above situation, the technical solution of this application is proposed. Summary of the Invention

[0010] In view of the disadvantages of the above-mentioned prior art, the purpose of the present invention is to provide a lighting fixture, its power calibration system and method, which are used to solve the problems of energy waste, unstable lighting effect, shortened service life, potential safety hazards and inability to meet the requirements of precise lighting application scenarios caused by the large deviation between the nominal power and the actual power of the lighting fixture in the prior art.

[0011] To achieve the above purpose and other related purposes, the present invention provides the following technical solutions:

[0012] In a first aspect, the present application provides a lighting fixture, which is characterized by including: a fixture body, a radio frequency module, a power supply driving module and a data storage module built in the fixture body. The data storage module stores fixture data information, and the data storage information includes an initial nominal power and an initial PWM adjustment parameter; the radio frequency module establishes communication interaction connections between the data storage module, the power supply driving module and an external device; the power supply driving module changes the PWM output frequency or duty cycle by executing the received adjustment instruction.

[0013] In an embodiment of the present invention, the radio frequency module adopts any one of a low-power Bluetooth module, a ZigBee module and a Wi-Fi module.

[0014] By implementing the above technical solution, the lighting fixture can establish communication interaction with an external device, can receive and execute an adjustment instruction obtained based on the actual power collected by the external device and the stored initial nominal power, and change the PWM output frequency or duty cycle of the power supply driving module, so that the relative error value between the actual power and the nominal power of the lighting fixture is controlled within a small range.

[0015] In a second aspect, including the lighting fixture according to any one of the above embodiments, it further includes: a control terminal, communicatively connected to the lighting fixture, and pre-storing a mapping relation table of nominal power, actual power and PWM adjustment parameters, a fitting relation formula of actual power and PWM adjustment parameters, and a relative error value calculation formula of actual power and nominal power; a power test module, externally connected to the lighting fixture to collect the real-time actual power of the lighting fixture in the powered-on working state and establish a communication interaction connection with the control terminal through the radio frequency module;

[0016] When the control terminal receives the initial nominal power and the real-time actual power transmitted by the radio frequency module, it substitutes them into the relative error value calculation formula, and when the obtained real-time relative error value exceeds the interval range of [0, 1%], it queries the adjacent actual powers and corresponding PWM adjustment parameters in the mapping relation table corresponding to the real-time actual power, and substitutes them into the fitting relation formula to obtain the real-time PWM adjustment parameter corresponding to the real-time actual power;

[0017] The power driving module executes the real-time PWM adjustment instruction corresponding to the real-time PWM adjustment parameter generated by the control terminal received by the radio frequency module to change the PWM output frequency or duty cycle.

[0018] In an embodiment of the present invention, the lighting fixture data information further includes the previous real-time PWM adjustment parameter received from the control terminal and corresponding to the real-time relative error value falling within the range of [0, 1%].

[0019] In an embodiment of the present invention, the fitting relationship formula adopts any one of a linear interpolation fitting relationship formula and a curve fitting relationship formula.

[0020] To implement the above technical solution, the power test module collects the real-time actual power of the lighting fixture when it is powered on and working. The control terminal calculates the relative error value based on the received initial nominal power and the real-time actual power, and when the relative error value exceeds 1%, calculates the real-time PWM adjustment parameter based on the mapping relationship table and the fitting relationship formula, and transmits the real-time PWM adjustment instruction corresponding to the real-time PWM adjustment parameter to the lighting fixture. The power driving module executes the real-time PWM adjustment instruction to change the PWM output frequency or duty cycle; until the real-time relative error value falls within the range of [0, 1%], so as to achieve the purpose of reducing the relative error value between the actual power and the nominal power of the lighting fixture, and enabling the lighting fixture to have better performance and functions. At the same time, the real-time PWM adjustment parameter corresponding to the relative error value within the range of [0, 1%] is stored in the data storage module, which improves the reliability and effectively reduces the possibility of external interference and data transmission errors; at the same time, it also reduces the repeated detection steps and improves the response speed of the system.

[0021] In a third aspect, the present application provides a method for calibrating the power of a lighting fixture, which is characterized by including:

[0022] S1, connecting the lighting fixture as described in any one of the above embodiments when it is powered on and working to the power test module to collect the real-time actual power;

[0023] S2, transmitting the initial nominal power stored in the data storage module and the real-time actual power collected by the power test module to the control terminal;

[0024] S3, calculating the real-time relative error value between the real-time actual power and the initial nominal power based on the relative error value calculation formula of the actual power and the nominal power pre-stored in the control terminal;

[0025] S4, judging whether the real-time relative error value falls within the range of [0, 1%];

[0026] When the judgment result is "yes", stop;

[0027] When the judgment result is "No", query the mapping relation table of nominal power, actual power and PWM adjustment parameters pre-stored in the control terminal, obtain the adjacent actual powers before and after corresponding to the real-time actual power in the mapping relation table and the corresponding PWM adjustment parameters, and substitute them into the pre-stored fitting relation formula of actual power and PWM adjustment parameters to obtain the real-time PWM adjustment parameter corresponding to the real-time actual power, and generate a corresponding real-time PWM adjustment instruction;

[0028] S5. Receive and execute the real-time PWM adjustment instruction from the control terminal to enable the power drive module to change the PWM output frequency or duty cycle;

[0029] S6. Collect the real-time actual power based on the power test module, and repeat steps S2 - S6.

[0030] In an embodiment of the present invention, step S6 further includes: when the judgment result in step S4 is "Yes" and stops, transmit the real-time PWM adjustment parameter of the previous time to the data storage module for storage.

[0031] Implementing the above technical solution, the relative error value between the nominal power and the actual power of the lighting fixture is adjusted within the range of [0, 1%], so that the lighting fixture can have good performance and functions. And store the real-time PWM adjustment parameters corresponding to the relative error value within the range of [0, 1%] in the data storage module, which improves the reliability and effectively reduces the possibility of external interference and data transmission errors; at the same time, it also reduces the repeated detection steps and improves the response speed of the system.

[0032] As described above, a lighting fixture and its power calibration system and method provided by the present invention have the following beneficial effects:

[0033] A lighting fixture, its power calibration system and method. The lighting fixture power calibration system includes a lighting fixture, a control terminal, and a function test module. The lighting fixture includes a fixture body, a radio frequency module built into the fixture body, a power drive module, and a data storage module. The data storage module stores fixture data information, and the data storage information includes an initial nominal power and an initial PWM adjustment parameter. The radio frequency module establishes communication and interaction connections between the data storage module, the power drive module, the function test module, and external devices. The power test module is externally connected to the lighting fixture to collect the real-time actual power of the lighting fixture when it is powered on and working. The control terminal is communicatively connected to the lighting fixture and pre-stores a mapping relationship table of nominal power, actual power, and PWM adjustment parameters, a fitting relationship formula of actual power and PWM adjustment parameters, and a relative error value calculation formula of actual power and nominal power. When the control terminal receives the initial nominal power and the real-time actual power transmitted by the radio frequency module, it substitutes them into the relative error value calculation formula. When the obtained real-time relative error value exceeds the interval range of [0, 1%], it queries the adjacent actual power and the corresponding PWM adjustment parameters in the mapping relationship table corresponding to the real-time actual power, and substitutes them into the fitting relationship formula to obtain the real-time PWM adjustment parameter corresponding to the real-time actual power. The power drive module executes the real-time PWM adjustment instruction corresponding to the real-time PWM adjustment parameter generated by the control terminal received by the radio frequency module to change the PWM output frequency or duty cycle. Adjust the relative error value between the nominal power and the actual power of the lighting fixture within the range of [0, 1%], so that the lighting fixture can have good performance and functions. And store the real-time PWM adjustment parameter with the relative error value within the range of [0, 1%] in the data storage module, which improves the reliability and effectively reduces the possibility of external interference and data transmission errors. At the same time, it also reduces the repeated detection steps and improves the response speed of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It shows a schematic structural diagram of the lighting fixture according to an embodiment of the present invention.

[0035] Figure 2 It shows a schematic diagram of the communication and interaction between the radio frequency module and the control terminal according to an embodiment of the present invention.

[0036] Figure 3 It shows a schematic flowchart of the lighting fixture power calibration method according to an embodiment of the present invention.

[0037] Descriptions of the reference numerals of each technical feature in the drawings:

[0038] 100, lighting fixture; 101, fixture body; 102, power drive module; 103, radio frequency module; 104, data storage module; 2, control terminal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0040] Please refer to Figure 1 . It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementation conditions of the present invention. Therefore, they do not have any technical substantial meaning. Any modification of the structure, change of the ratio relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0041] Term Explanation:

[0042] PWM (Pulse Width Modulation) is a technology that controls the average output voltage or power by adjusting the duty cycle of the pulse signal (the ratio of the high-level time to the period).

[0043] Bluetooth is a short-range wireless communication technology designed to achieve low-power and low-cost data transmission between devices.

[0044] ZigBee is a short-range, low-power wireless communication technology based on the IEEE 802.15.4 standard, designed specifically for Internet of Things (IoT) and industrial automation scenarios, and supports self-organizing networks (Mesh) and multi-hop data transmission.

[0045] Wi-Fi (Wireless Fidelity) is a wireless local area network (WLAN) technology based on the IEEE 802.11 series of standards, designed to provide Internet access and local network communication for high-data-rate devices.

[0046] Embodiment:

[0047] A lighting fixture power calibration system includes a lighting fixture, a control terminal communicatively connected to the lighting fixture for interaction, and a function test module externally connected to the lighting fixture.

[0048] Specifically, please refer to Figure 1 , the present invention provides a lighting fixture, including: a fixture body, a radio frequency module, a power drive module, and a data storage module built in the fixture body. The data storage module stores fixture data information, and the data storage information includes an initial nominal power and initial PWM adjustment parameters; the radio frequency module establishes a communicative connection for interaction among the data storage module, the power drive module, and external devices; the power drive module executes the received adjustment instruction to change the PWM output frequency or duty cycle.

[0049] Among them, the radio frequency module adopts any one of a low-power Bluetooth module, a ZigBee module, and a Wi-Fi module.

[0050] The lighting fixture establishes a communication interaction relationship with an external device through the radio frequency module. Among them, the external device can be a smart lighting control system, a control terminal, or an application scenario control device, which is not specifically limited in this embodiment. The power drive module receives the adjustment instruction transmitted by the external device through the radio frequency module and executes it to change the PWM output frequency or duty cycle, so that the relative error value between the actual power and the nominal power of the lighting fixture is controlled within a small range.

[0051] Among them, the power test module is externally connected to the lighting fixture to collect the real-time actual power of the lighting fixture when it is powered on. Specifically, the function test module can adopt a lighting fixture power test instrument. The power test module establishes a communication interaction connection with the control terminal through the radio frequency module.

[0052] The control terminal pre-stores a mapping relationship table regarding the nominal power, actual power, and PWM adjustment parameters, a fitting relationship formula regarding the actual power and PWM adjustment parameters, and a relative error value calculation formula regarding the actual power and the nominal power.

[0053] Among them, the mapping relationship table is shown in Table 1 as an example. The data in Table 1 is only for example and does not serve as the data of a specific embodiment of this application, and is only used to understand the mapping relationship table.

[0054] Table 1: Mapping relationship table

[0055]

[0056]

[0057] The fitting relationship formula adopts any one of a linear interpolation fitting relationship formula and a curve fitting relationship formula.

[0058] For easy understanding, for example, Formula 1 represents the linear interpolation fitting relationship formula. Formula 1 is only for example and does not serve as the data of a specific embodiment of this application, and is only used to understand the linear interpolation fitting relationship formula.

[0059]

[0060] For easy understanding, for example, Formula 2 represents the curve fitting relationship formula. Formula 2 is only for example and does not serve as the data of a specific embodiment of this application, and is only used to understand the linear curve fitting relationship formula.

[0061] y = ax 2 + bx + c (Formula 2)

[0062] Specifically, the calculation formula for the relative error value between the actual power and the nominal power is as shown in Formula 3:

[0063]

[0064] Refer to Figure 2 , when the control terminal receives the initial nominal power and the real-time actual power transmitted by the RF module, it substitutes them into the relative error value calculation formula (Formula 3), and when the obtained real-time relative error value exceeds the interval range of [0, 1%], it queries the adjacent actual powers and the corresponding PWM adjustment parameters in the real-time actual power corresponding mapping table, and substitutes them into the fitting relationship formula to obtain the real-time PWM adjustment parameter corresponding to the real-time actual power.

[0065] For easy understanding, an example is given. For example, if the real-time actual error is 11W, the adjacent actual powers are 10W and 12W, and substituting into Formula 1 for calculation: We get y = 55%.

[0066] Similarly, the curve fitting relationship formula calculates the values of coefficients a, b, and c based on the known data in the mapping table. Substituting the real-time actual power into Formula 2, the real-time PWM adjustment parameter can be obtained.

[0067] The control terminal generates a real-time PWM adjustment instruction corresponding to the real-time PWM adjustment parameter and transmits it to the power drive module through the RF module. The power drive module executes the real-time PWM adjustment instruction to change the PWM output frequency or duty cycle.

[0068] When the relative error value between the initial nominal power and the real-time actual power received by the control terminal falls within the interval range of [0, 1%], it transmits the previous real-time PWM adjustment parameter to the data storage module through the RF module. The data storage module stores the real-time PWM adjustment parameter corresponding to the error value within the range of [0, 1%], which improves the reliability and effectively reduces the possibility of external interference and data transmission errors; at the same time, it also reduces the repeated detection steps and improves the response speed of the system.

[0069] Specifically, refer to Figure 3 , the lighting fixture power calibration method specifically executed by the lighting fixture power calibration system includes: S1, connecting the lighting fixture in the powered-on working state to the power test module to collect the real-time actual power;

[0070] S2, transmitting the initial nominal power stored in the data storage module and the real-time actual power collected by the power test module to the control terminal;

[0071] S3. Calculate the real-time relative error value between the real-time actual power and the initial nominal power based on the calculation formula of the relative error value between the actual power and the nominal power pre-stored in the control terminal.

[0072] S4. Determine whether the real-time relative error value falls within the range of [0, 1%].

[0073] When the judgment result is "yes", stop and transmit the real-time PWM adjustment parameters of the previous time to the data storage module for storage.

[0074] When the judgment result is "no", query the mapping relationship table of the nominal power, actual power, and PWM adjustment parameters pre-stored in the control terminal, obtain the adjacent actual powers and the corresponding PWM adjustment parameters in the mapping relationship table corresponding to the real-time actual power, and substitute them into the fitting relationship formula of the actual power and the PWM adjustment parameters pre-stored to obtain the real-time PWM adjustment parameters corresponding to the real-time actual power, and generate the corresponding real-time PWM adjustment instruction.

[0075] S5. Receive and execute the real-time PWM adjustment instruction from the control terminal to enable the power drive module to change the PWM output frequency or duty cycle.

[0076] S6. Collect the real-time actual power based on the power test module, and repeat steps S2 - S6.

[0077] Using the above lighting fixture power calibration method to adjust the error value between the nominal power and the actual power of the lighting fixture within the range of [0, 1%], so that the lighting fixture can have good performance and functions. And store the real-time PWM adjustment parameters with the corresponding error value within the range of [0, 1%] in the data storage module, which improves the reliability and effectively reduces the possibility of external interference and data transmission errors; at the same time, it also reduces the repeated detection steps and improves the response speed of the system.

[0078] The lighting fixture after specifically executing the lighting fixture calibration method using the above lighting fixture calibration system can show excellent performance and functions in multiple application scenarios.

[0079] For example, specifically applied to the lighting scenario of a jewelry store, the lighting fixtures in the jewelry store can provide stable and accurate light, highlight the details of the jewelry, improve the display effect, and avoid energy waste caused by power deviation at the same time.

[0080] Another example is applied to the operating room of a hospital. The lighting fixtures in the operating room can provide stable and non-flickering light, ensure the safety and accuracy of the surgical process, extend the service life of the fixtures, and reduce the maintenance cost at the same time.

[0081] For another example, when applied to the intelligent home lighting scenario, it can achieve precise power control and provide a stable and comfortable lighting effect. At the same time, the lighting fixture can be seamlessly connected to the intelligent home system, supporting remote control and automatic adjustment, thus enhancing the user experience.

[0082] Also, when applied to the industrial production lighting scenario, the lighting fixtures in the industrial production workshop can provide stable and uniform light, avoiding insufficient or over-bright lighting caused by power deviation. At the same time, the service life of the lighting fixtures is extended, reducing the maintenance cost, and improving the production efficiency and product quality.

[0083] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A lighting fixture, characterized in that: include: A lamp body, a radio frequency module, a power drive module and a data storage module built into the lamp body, wherein the data storage module stores lamp data information, and the data storage information includes an initial nominal power and an initial PWM adjustment parameter; The radio frequency module establishes a communication interaction connection between the data storage module, the power drive module and an external device; the power drive module executes the received adjustment instruction to change the PWM output frequency or duty cycle.

2. The lighting fixture according to claim 1, characterized in that: The radio frequency module adopts any one of a low-power Bluetooth module, a ZigBee module, and a Wi-Fi module.

3. A lighting fixture power calibration system, characterized in that: The lighting fixture comprises the lighting fixture as claimed in any one of claims 1 to 2, and further comprises: a control terminal, which is communicatively connected to the lighting fixture and pre-stores a mapping relationship table of nominal power, actual power and PWM adjustment parameters, a fitting relationship formula of actual power and PWM adjustment parameters, and a calculation formula of a relative error value between actual power and nominal power; A power test module, externally connected to the lighting fixture to collect the real-time actual power of the lighting fixture when it is powered on and establish a communication interaction connection with the control terminal through the radio frequency module; The control terminal brings the relative error value calculation formula into the control terminal upon receiving the initial nominal power and the real-time actual power transmitted by the radio frequency module, and when the obtained real-time relative error value exceeds the interval range of [0, 1%], queries the real-time actual power corresponding to the adjacent real power and the corresponding PWM adjustment parameter in the mapping relationship table, and brings the real-time actual power into the fitting relationship formula to obtain the real-time PWM adjustment parameter corresponding to the real-time actual power; The power driving module executes the real-time PWM adjustment instruction corresponding to the real-time PWM adjustment parameter generated by the control terminal and received by the RF module to change the PWM output frequency or duty cycle.

4. The lighting fixture power calibration system according to claim 1, characterized in that: The lamp data information also includes the previous real-time PWM adjustment parameter received from the control terminal and corresponding to the real-time relative error value falling within the interval range of [0, 1%].

5. The lighting fixture power calibration system according to claim 1, characterized in that: The fitting relationship formula adopts any one of a linear interpolation fitting relationship formula and a curve fitting relationship formula.

6. A lighting fixture power calibration method, characterized in that: include: S1, connecting the lighting fixture according to any one of claims 1 to 2 in a powered working state to a power test module to collect real-time actual power; S2, transmitting the initial nominal power stored in the data storage module and the real-time actual power collected by the power test module to the control terminal; S3, calculating the real-time relative error value between the real-time actual power and the initial nominal power based on the relative error value calculation formula between the actual power and the nominal power pre-stored in the control terminal; S4, determining whether the real-time relative error value falls within the interval range of [0, 1%]; When the judgment result is "yes", stop; When the judgment result is "no", query the mapping relationship table of nominal power, actual power and PWM adjustment parameters pre-stored in the control terminal, obtain the real-time actual power corresponding to the adjacent actual power and the corresponding PWM adjustment parameter in the mapping relationship table, and bring into the pre-stored fitting relationship formula of the actual power and the PWM adjustment parameter to obtain the real-time PWM adjustment parameter corresponding to the real-time actual power, and generate the corresponding real-time PWM adjustment instruction; S5, receiving and executing a real-time PWM adjustment instruction from the control terminal to enable the power drive module to change the PWM output frequency or duty cycle; S6, collecting real-time actual power based on the power test module, and repeating steps S2-S6.

7. The lighting fixture power calibration method according to claim 4, characterized in that: Step S6 also includes: when the result of step S4 is "yes" to stop, transmitting the previous real-time PWM adjustment parameter to the data storage module for storage.

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