Intelligent heat dissipation stage lamp system based on air pressure sensing

Abstract

The utility model discloses an intelligent heat dissipation stage lamp system based on air pressure sensing. The stage lamp integrates the air pressure sensor, the main control board, the sub-control board, the heat dissipation module, the radiator driving circuit and the radiator detection circuit, and aims to solve the heat dissipation problem of a traditional stage lamp in a complex environment, especially in a high-altitude or low-air-pressure area. The radiator is mounted on the outer side of the bracket and is communicated with the cavity; the sub-control board comprises a radiator driving circuit and a radiator detection circuit; the radiator is electrically connected with the radiator drive circuit and the radiator detection circuit. The radiator detection circuit is further connected with the main control board. The air pressure sensing module comprises an air pressure sensor arranged in the lamp body; by arranging the air pressure sensor, the heat dissipation module, the radiator driving circuit and the radiator detection circuit, the main control board can adjust the air speed of the radiator in real time according to the environment air pressure, the rotating speed or the air outlet amount of the radiator is increased, and the active heat dissipation effect of the light source is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stage lamps, and in particular relates to an intelligent heat dissipation stage lamp system based on air pressure sensing. Background Art

[0002] When the stage lights are working normally, they will generate a certain amount of heat. The difference between the generated heat and the ambient temperature is called temperature rise. Too high temperature rise will cause dangers such as abnormal operation of stage lighting equipment and high temperature damage. Therefore, stage lights generally use ventilation fans to generate air convection to remove heat, thereby preventing the potential dangers caused by excessive temperature rise of stage lights and avoiding affecting the service life of stage lights. For example, in the prior art, the Chinese patent with publication number CN203907350U discloses an LED stage light, which is also provided with a cooling fan.

[0003] In high-altitude areas such as western plateaus and mountainous areas, the temperature rise of stage lighting equipment is also affected by the altitude, and the temperature rise changes roughly linearly with the altitude. For forced convection heat dissipation, as the altitude increases, the atmospheric pressure decreases, the air density decreases, and the air viscosity coefficient increases. Even if the air volume remains unchanged, the mass flow of the air will gradually decrease, resulting in a decrease in the heat transferred. Under such conditions, the ventilation fan cannot efficiently discharge heat to the outside, resulting in excessive temperature rise of the stage lights, which brings potential dangers and affects the service life of the stage lights.

[0004] Therefore, there is an urgent need for an intelligent heat dissipation stage lighting system based on air pressure sensing to solve the above problems. Summary of the invention

[0005] In view of the problems in the related technology, the utility model proposes an intelligent heat dissipation stage lighting system based on air pressure sensing to overcome the above-mentioned technical problems existing in the existing related technology. The intelligent heat dissipation stage lighting system of the utility model can automatically sense the atmospheric pressure change data of its use environment and the temperature rise data of the key positions of the lamps, so that the utility model can improve the heat dissipation effect of the light source of the bubble lamp light source in the high-altitude and low-pressure environment, and automatically adjust the speed of the heat dissipation fan according to the air pressure data and the temperature data to provide a better heat dissipation effect, thereby extending the service life of the lamp.

[0006] The technical solution of the utility model is implemented as follows: an intelligent heat dissipation stage lamp system based on air pressure sensing comprises a lamp body and a light source, wherein the light source is arranged in the lamp body.

[0007] It also includes an air pressure sensing module, a main control board, a sub-control board and a heat dissipation module, wherein the air pressure sensing module and the sub-control board are electrically connected to the main control board respectively; the main control board is installed at the bottom of the lamp body;

[0008] The heat dissipation module includes a bracket, the bracket has a hollow cavity, and the light source is installed in the cavity; the heat dissipation module also includes a plurality of heat sinks, which are installed on the outside of the bracket and communicated with the cavity;

[0009] The sub-control board includes a radiator driving circuit and a radiator detection circuit; the radiator is electrically connected to the radiator driving circuit and the radiator detection circuit respectively, and the radiator detection circuit is also connected to the main control board;

[0010] The air pressure sensing module includes an air pressure sensor arranged in the lamp body, and the air pressure sensor is used to detect real-time air pressure data in the lamp body; the radiator driving circuit is used to drive the radiator to work; the radiator detection circuit is used to detect the rotation speed and voltage data of the radiator; the main control board is used to obtain real-time air pressure data, send control instructions to the sub-control board and receive the rotation speed and voltage data fed back by the radiator detection circuit.

[0011] Furthermore, the heat dissipation module includes a first radiator, a second radiator and a third radiator installed on the bracket, the third radiator is provided with an air duct for air to flow through, and the air outlet of the air duct extends to the light source; each of the radiators is electrically connected to the radiator drive circuit and the radiator detection circuit respectively.

[0012] Furthermore, the light source comprises a reflective cup and a bulb, and the light source output end of the bulb is arranged in the reflective cup;

[0013] The third heat sink is a centrifugal fan, which is used to drive air to flow toward the air duct, and the air outlet of the air duct extends into the reflective cup; the centrifugal fan mainly dissipates heat inside the light source.

[0014] Furthermore, the first radiator and the second radiator are both DC cooling fans, and the first radiator and the second radiator are respectively arranged on two opposite sides of the bracket; the first radiator and the second radiator are mainly used to dissipate heat for the entire cavity.

[0015] Furthermore, the bracket is provided with a heat dissipation window for placing the first radiator and the second radiator; the first radiator and the second radiator are arranged in the same direction and discharge air in the same direction.

[0016] Furthermore, the air pressure sensing module also includes an air pressure sensing module circuit, and the air pressure sensing module circuit includes a voltage regulator U1 and a BMP280 sensor chip; the voltage regulator U1 is a constant voltage transformer, and its model is ME1117A33B3G; the air pressure sensing module circuit is connected to the main control board;

[0017] In the utility model, the air pressure sensor with a BMP280 sensor chip is a high-precision air pressure sensor, and its working principle is mainly based on piezoresistive sensor technology; wherein, this air pressure sensor is composed of a tiny piezoresistive sensor and a temperature sensor; through its internal pressure sensor, it is affected by the ambient atmospheric pressure in the lamp body, and when the air pressure or temperature changes, the piezoresistive sensor or the temperature sensor will generate corresponding electrical signals; the air pressure sensor converts these electrical signals through an internal analog-to-digital converter (ADC) and processes them, and obtains corresponding accurate air pressure and temperature data; finally, the air pressure sensor sends these accurate air pressure and temperature data to the main control board.

[0018] Furthermore, the air pressure sensor is provided by I 2 The C bus is in communication connection with the main control board.

[0019] Furthermore, the main control board includes an STM32 microcontroller circuit; the sub-control board is connected to the STM32 microcontroller circuit; and the STM32 microcontroller circuit includes a microcontroller of model STM32F407VET6.

[0020] Furthermore, the sub-control board also includes a GD32 microcontroller circuit; the main control board is connected to the GD32 microcontroller circuit; the GD32 microcontroller circuit includes a microcontroller of model GD32F303CCT6.

[0021] Further, the main control board also includes a first serial port to RS485 circuit, an RS485 to serial port circuit and a sub-control board drive circuit; the first serial port to RS485 circuit, the RS485 to serial port circuit, and the sub-control board drive circuit are respectively connected to the GD32 microcontroller circuit;

[0022] The sub-control board also includes a second serial port to RS485 circuit; the main control board, the second serial port to RS485 circuit, the radiator drive circuit, and the radiator detection circuit are respectively connected to the GD32 microcontroller circuit;

[0023] Wherein, the first serial port to RS485 circuit and the second serial port to RS485 circuit are both used to convert serial port signals into RS485 signals; the RS485 to serial port circuit is used to convert RS485 signals into serial port signals;

[0024] The sub-control board driving circuit is used to send control instructions to the sub-control board.

[0025] Beneficial effects of the utility model:

[0026] The utility model provides an intelligent heat dissipation stage light system based on air pressure sensing. The utility model can realize accurate control of the wind speed of the radiator by setting the air pressure sensor, the heat dissipation module, the radiator driving circuit and the radiator detection circuit; since the air mass density in high altitude or low pressure areas is relatively small, the light source has a higher demand for heat dissipation, and the main control board in the utility model can adjust the wind speed of the radiator in real time according to the ambient air pressure, increase its rotation speed or air volume, improve the active heat dissipation effect of the light source, and thus increase the service life of the stage light; therefore, the utility model makes the stage light have higher durability in high altitude or low pressure environments, thereby avoiding the potential danger caused by excessive temperature rise of the stage light and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of an intelligent heat dissipation stage lighting system based on air pressure sensing of the utility model;

[0028] Figure 2 This is a cross-sectional view of an intelligent heat dissipation stage lighting system based on air pressure sensing of the utility model;

[0029] Figure 3 It is a schematic diagram of the structure of the air pressure sensing module circuit of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the radiator detection circuit of the utility model;

[0031] Figure 5 It is a structural schematic diagram of the radiator driving circuit of the utility model;

[0032] Figure 6 It is a structural schematic diagram of the STM32 microcontroller circuit of the utility model;

[0033] Figure 7 It is a schematic diagram of the structure of the GD32 microcontroller circuit of the utility model;

[0034] Figure 8 It is a structural schematic diagram of the first serial port to RS485 circuit of the utility model;

[0035] Fig. 9 It is a structural schematic diagram of the RS485 to serial port circuit of the utility model;

[0036] Fig.10 It is a structural schematic diagram of the second serial port to RS485 circuit of the utility model;

[0037] Fig.11 It is a structural schematic diagram of the sub-control board driving circuit of the utility model;

[0038] Fig.12 The utility model is a working principle diagram of an intelligent heat dissipation stage light system based on air pressure sensing.

[0039] Marking Description:

[0040] 1. Light source; 11. Reflector cup; 12. Light bulb; 2. Bracket; 3. First radiator; 4. Second radiator; 5. Third radiator; 51. Air duct. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] like Figure 1-2 As shown, this embodiment provides an intelligent heat dissipation stage lamp system based on air pressure sensing, comprising a lamp body and a light source 1, wherein the light source 1 is arranged in the lamp body.

[0044] It also includes an air pressure sensing module, a main control board, a sub-control board and a heat dissipation module, wherein the air pressure sensing module and the sub-control board are electrically connected to the main control board respectively; the main control board is installed at the bottom of the lamp body; in this embodiment, the air pressure sensing module is fixed to the main control board by welding;

[0045] The heat dissipation module includes a bracket 2, the bracket 2 has a hollow cavity, and the light source 1 is installed in the cavity; the heat dissipation module also includes a plurality of heat sinks, which are installed on the outside of the bracket 2 and communicated with the cavity;

[0046] The sub-control board includes a radiator driving circuit and a radiator detection circuit; the radiator is electrically connected to the radiator driving circuit and the radiator detection circuit respectively, and the radiator detection circuit is also connected to the main control board;

[0047] like Figure 3 As shown, the air pressure sensing module includes an air pressure sensor disposed in the lamp body, and the air pressure sensor is used to detect real-time air pressure data in the lamp body; Figure 5 As shown, the radiator driving circuit is used to drive the radiator to work; Figure 4 As shown, the radiator detection circuit is used to detect the rotation speed and voltage data of the radiator; Figure 6 As shown, the main control board is used to obtain real-time air pressure data, send control instructions to the sub-control board, and receive speed and voltage data fed back by the radiator detection circuit;

[0048] Specifically, Figure 5 As shown, the radiator driving circuit controls the output voltage by changing the PWM duty cycle of driving the radiator, and the voltage regulation accuracy can reach 0.1V; the larger the PWM duty cycle, the larger the output voltage of the radiator driving circuit, the larger the speed of the radiator, and the air volume of the radiator also increases accordingly;

[0049] In this embodiment, if Figure 4 As shown, the radiator detection circuit can calculate the rotation speed of the radiator by detecting the variable frequency square wave signal fed back by the radiator, and then feed back the rotation speed data to the main control board, thereby forming a closed-loop system;

[0050] like Figure 1 As shown, this embodiment provides the air pressure sensor, the heat dissipation module, the heat sink driving circuit and the heat sink detection circuit, so that this embodiment can realize the precise control of the wind speed of the radiator; since the air mass density in high altitude or low pressure areas is relatively small, the light source 1 has a higher demand for heat dissipation, and the main control board in this embodiment can adjust the wind speed of the radiator in real time according to the ambient air pressure, increase its rotation speed or air volume, improve the active heat dissipation effect of the light source 1, and thus increase the service life of the stage light; therefore, this embodiment makes the stage light have higher durability and stronger practicality in high altitude or low pressure environments.

[0051] Specifically, the heat dissipation module includes a first radiator 3, a second radiator 4 and a third radiator 5 installed on the bracket 2, and the third radiator 5 is provided with an air duct 51 for air to flow through, and the air outlet of the air duct 51 extends to the light source 1; each of the radiators is electrically connected to the radiator drive circuit and the radiator detection circuit respectively.

[0052] Specifically, Figure 2 As shown, the light source 1 includes a reflective cup 11 and a bulb 12, and the light source 1 output end of the bulb 12 is arranged in the reflective cup 11;

[0053] The third heat sink 5 is a centrifugal fan, which is used to drive air to flow toward the air duct 51, and the air outlet of the air duct 51 extends into the reflective cup 11; the centrifugal fan mainly dissipates heat from the inside of the light source 1, thereby more effectively removing the heat generated by the light source 1 when working, and significantly reducing the working temperature of the light source 1.

[0054] Specifically, the first radiator 3 and the second radiator 4 are both DC cooling fans, and the first radiator 3 and the second radiator 4 are respectively arranged on opposite sides of the bracket 2; the first radiator 3 and the second radiator 4 are mainly used to dissipate heat for the entire cavity, further improving the heat dissipation effect.

[0055] Specifically, the bracket 2 is provided with a heat dissipation window for placing the first radiator 3 and the second radiator 4; the first radiator 3 and the second radiator 4 are arranged in the same direction and discharge air in the same direction;

[0056] In this implementation, if Figure 1 As shown, the first radiator 3 and the second radiator 4 are arranged in the same direction and discharge air in the same direction. By strengthening convection, a lower radiator speed is achieved to achieve the same heat dissipation effect as a single radiator with a high speed.

[0057] Specifically, Figure 3 As shown, the air pressure sensing module also includes an air pressure sensing module circuit, and the air pressure sensing module circuit includes a voltage regulator U1 and a BMP280 sensor chip; the voltage regulator U1 is a constant voltage transformer, and its model is ME1117A33B3G; the air pressure sensing module circuit is connected to the main control board;

[0058] In this embodiment, the model of the BMP280 sensor chip is Bosch-BMP280, the detectable air pressure range is 30-110KPa, the relative accuracy is ±0.012KPa, and the resolution can reach 0.1KPa. The use of high-precision and high-resolution sensor chips helps to improve the accuracy of the system control and adjustment of the radiator wind speed.

[0059] In this embodiment, the air pressure sensor with a BMP280 sensor chip is a high-precision air pressure sensor, and its working principle is mainly based on piezoresistive sensor technology; wherein, this air pressure sensor is composed of a tiny piezoresistive sensor and a temperature sensor; the pressure sensor inside it is affected by the ambient atmospheric pressure in the lamp body, and when the air pressure or temperature changes, the piezoresistive sensor or the temperature sensor will generate corresponding electrical signals; the air pressure sensor converts and processes these electrical signals through an internal analog-to-digital converter (ADC) to obtain corresponding accurate air pressure and temperature data; finally, the air pressure sensor sends these accurate air pressure and temperature data to the main control board.

[0060] Specifically, the air pressure sensor is 2 The C bus is in communication connection with the main control board.

[0061] like Figure 6 As shown, the main control board includes an STM32 microcontroller circuit; the sub-control board is connected to the STM32 microcontroller circuit; the STM32 microcontroller circuit includes a microcontroller model STM32F407VET6.

[0062] like Figure 7 As shown, the sub-control board also includes a GD32 microcontroller circuit; the main control board is connected to the GD32 microcontroller circuit; the GD32 microcontroller circuit includes a microcontroller model GD32F303CCT6.

[0063] like Figure 8-11 As shown, the main control board also includes a first serial port to RS485 circuit, an RS485 to serial port circuit and a sub-control board drive circuit; the first serial port to RS485 circuit, the RS485 to serial port circuit, and the sub-control board drive circuit are respectively connected to the GD32 microcontroller circuit;

[0064] like Fig.10 As shown, the sub-control board also includes a second serial port to RS485 circuit; the main control board, the second serial port to RS485 circuit, the radiator drive circuit, and the radiator detection circuit are respectively connected to the GD32 microcontroller circuit;

[0065] Among them, the first serial port to RS485 circuit and the second serial port to RS485 circuit are both used to convert serial port signals into RS485 signals; the RS485 to serial port circuit is used to convert RS485 signals into serial port signals; wherein, RS485 signal is an internationally used differential signal, which is anti-interference and will not be distorted even if transmitted over long distances, and is suitable for communication between the main control board and the sub-control board.

[0066] The sub-control board driving circuit is used to send control instructions to the sub-control board.

[0067] like Fig.12 As shown, the process of an intelligent heat dissipation stage lighting system based on air pressure sensing described in this embodiment 1 is as follows:

[0068] The BMP280 sensor chip is connected via I 2 C protocol is used to communicate with the main control board. The STM32 microcontroller circuit obtains the original air pressure data from the air pressure sensor, and the STM32 microcontroller circuit adopts a compensation algorithm to correct the actual air pressure value. The microcontroller of the STM32 microcontroller circuit reads the actual air pressure value, and compares the actual air pressure value with the pre-air pressure value to obtain the air pressure change value in the cavity, and calculates the target change value of the radiator wind speed according to the air pressure change value in the cavity. Then, the STM32 microcontroller circuit packs the data for adjusting the radiator wind speed into a packet of new data, and the new data is transmitted to the first serial port to RS485 circuit via a serial port signal, and the first serial port to RS485 circuit converts the serial port signal into an RS485 signal and then sends it to the sub-control board.

[0069] After the sub-control board receives the RS485 signal, the microcontroller of the sub-control board drives the radiator driving circuit to operate, and the radiator driving circuit drives the radiator to operate.

[0070] The radiator detection circuit detects the rotation speed and voltage data of the radiator and feeds back the data to the main control board, thereby forming a closed-loop system.

[0071] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. An intelligent heat dissipation stage lamp system based on air pressure sensing, comprising a lamp body and a light source, wherein the light source is arranged in the lamp body, characterized in that: It also includes an air pressure sensing module, a main control board, a sub-control board and a heat dissipation module, wherein the air pressure sensing module and the sub-control board are electrically connected to the main control board respectively; the main control board is installed at the bottom of the lamp body; The heat dissipation module includes a bracket, the bracket has a hollow cavity, and the light source is installed in the cavity; the heat dissipation module also includes a plurality of heat sinks, which are installed on the outside of the bracket and communicated with the cavity; The sub-control board includes a radiator driving circuit and a radiator detection circuit; the radiator is electrically connected to the radiator driving circuit and the radiator detection circuit respectively, and the radiator detection circuit is also connected to the main control board; The air pressure sensing module includes an air pressure sensor arranged in the lamp body, and the air pressure sensor is used to detect real-time air pressure data in the lamp body; the radiator driving circuit is used to drive the radiator to work; the radiator detection circuit is used to detect the rotation speed and voltage data of the radiator.

2. According to claim 1, the intelligent heat dissipation stage lighting system based on air pressure sensing is characterized in that: The heat dissipation module includes a first heat sink, a second heat sink and a third heat sink installed on the bracket. The third heat sink is provided with an air duct for air to flow through, and the air outlet of the air duct extends to the light source; each of the heat sinks is electrically connected to the heat sink drive circuit and the heat sink detection circuit respectively.

3. The intelligent heat dissipation stage lighting system based on air pressure sensing according to claim 2 is characterized in that: The light source comprises a reflective cup and a bulb, and the light source output end of the bulb is arranged in the reflective cup; The third radiator is a centrifugal fan, and the centrifugal fan is used to drive air to flow toward the air duct, and the air outlet of the air duct extends into the reflective cup.

4. The intelligent heat dissipation stage lighting system based on air pressure sensing according to claim 2 is characterized in that: The first radiator and the second radiator are both direct current cooling fans, and the first radiator and the second radiator are respectively arranged on two opposite sides of the bracket.

5. The intelligent heat dissipation stage lighting system based on air pressure sensing according to claim 4 is characterized in that: The bracket is provided with a heat dissipation window for placing the first radiator and the second radiator; the first radiator and the second radiator are arranged in the same direction and discharge air in the same direction.

6. The intelligent heat dissipation stage lighting system based on air pressure sensing according to claim 1, characterized in that: The air pressure sensing module also includes an air pressure sensing module circuit, which includes a voltage regulator U1 and a BMP280 sensor chip; the voltage regulator U1 is a constant voltage transformer, and its model is ME1117A33B3G; the air pressure sensing module circuit is connected to the main control board.

7. The intelligent heat dissipation stage lighting system based on air pressure sensing according to claim 1, characterized in that: The air pressure sensor is connected via I 2 The C bus is in communication connection with the main control board.

8. The intelligent heat dissipation stage lighting system based on air pressure sensing according to claim 1, characterized in that: The main control board includes an STM32 microcontroller circuit; the sub-control board is connected to the STM32 microcontroller circuit; the STM32 microcontroller circuit includes a microcontroller of model STM32F407VET6.

9. The intelligent heat dissipation stage lighting system based on air pressure sensing according to claim 8, characterized in that: The sub-control board also includes a GD32 microcontroller circuit; the main control board is connected to the GD32 microcontroller circuit; the GD32 microcontroller circuit includes a microcontroller of model GD32F303CCT6.

10. The intelligent heat dissipation stage lighting system based on air pressure sensing according to claim 9, characterized in that: The main control board also includes a first serial port to RS485 circuit, an RS485 to serial port circuit and a sub-control board drive circuit; the first serial port to RS485 circuit, the RS485 to serial port circuit, and the sub-control board drive circuit are respectively connected to the GD32 microcontroller circuit; The sub-control board also includes a second serial port to RS485 circuit; the main control board, the second serial port to RS485 circuit, the radiator drive circuit, and the radiator detection circuit are respectively connected to the GD32 microcontroller circuit; Wherein, the first serial port to RS485 circuit and the second serial port to RS485 circuit are both used to convert serial port signals into RS485 signals; and the RS485 to serial port circuit is used to convert RS485 signals into serial port signals.

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