Stage lamp adaptive detection system

Abstract

The utility model relates to a stage lamp self-adaptive detection system which is characterized in that a sealing cavity provided with a heating source is arranged in a stage lamp, the detection system comprises a control unit, an air pressure detection unit, a humidity detection unit and a pumping and draining unit which are arranged in the sealing cavity, and an exhaust hole capable of being communicated with the outside is formed in the sealing cavity. A gas outlet of the pumping and discharging unit is connected with the gas exhaust hole through a gas path, and the pumping and discharging unit can discharge part of gas in the sealing cavity out of the sealing cavity after sequentially passing through the gas exhaust hole, the gas outlet and the gas exhaust hole, so that the sealing cavity forms a negative pressure cavity; the detection system further comprises a drying device, vaporized water and grease can be absorbed by the drying device, so that the sealing cavity is kept in a dry environment, normal operation and the service life of equipment are guaranteed, and meanwhile the risk that moisture and oil gas are attached to the optical glass is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of stage lamp lighting, and in particular to an adaptive detection system for stage lamps. Background Art

[0002] When lighting fixtures are used outdoors or in other areas subject to rain, weather or high humidity, the lighting mechanism and optical system may be affected by conditions such as moisture and humidity. Although lighting fixtures are sealed, it is possible for outside air and moisture to be drawn back into the lighting fixture through seals, pressure relief valves or other pathways. This can also cause water to enter the lighting fixture or condense inside the lighting fixture and cause damage or degradation of the lighting mechanism and / or optical system.

[0003] In addition, lighting fixtures need to be tested for air tightness before leaving the factory. The general process of testing air tightness is: first connect the air tightness tester to the inside of the lighting fixture, fill or extract gas into the inner cavity of the workpiece to be tested through the pressure regulating valve, and after reaching the set pressure, cut off the workpiece to be tested and the gas source gas path, and keep it for a certain period of time to check whether the pressure value of the air tightness tester tends to be stable. If the difference is within the allowable range, the workpiece to be tested is considered qualified; otherwise, it is unqualified. However, such a testing process is particularly cumbersome, which in turn affects production efficiency. Summary of the invention

[0004] The present invention is to solve one of the above technical problems and provide a stage light adaptive detection system and a detection method using the adaptive detection system.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A stage light adaptive detection system, wherein a sealed cavity in which a heat source is installed is provided in the stage light, characterized in that the detection system comprises a control unit, an air pressure detection unit, a humidity detection unit and an exhaust unit arranged in the sealed cavity, an exhaust hole which can communicate with the outside is arranged on the sealed cavity, the exhaust unit has an exhaust port and an exhaust port, the exhaust port of the exhaust unit is connected with the exhaust hole through an air path, and the exhaust unit can discharge part of the gas in the sealed cavity out of the sealed cavity through the exhaust port, the exhaust port and the exhaust hole in sequence, so that the sealed cavity forms a negative pressure cavity;

[0007] The air pressure detection unit is used to detect the air pressure in the sealed cavity and feed back the air pressure signal to the control unit;

[0008] The humidity detection unit is used to detect the humidity in the sealed cavity and feed back the humidity signal to the control unit;

[0009] The control unit determines whether to perform a dehumidification action according to the humidity signal of the humidity detection unit;

[0010] The control unit also controls the extraction unit to start or shut down according to the air pressure signal of the air pressure detection unit;

[0011] The detection system also includes a drying device, which is used to absorb moisture and / or grease in the sealed cavity.

[0012] As a preferred embodiment, it is further defined that the air suction port of the exhaust unit is connected to a solenoid valve through an air circuit, or / and the air outlet and the exhaust hole are connected to a solenoid valve through an air circuit, and the control unit can control the opening and closing of the solenoid valve to control the conduction and closure of the air circuit.

[0013] As a preferred embodiment, it is further defined that the detection system includes a temperature detection unit, and the temperature detection unit is used to detect the temperature in the sealed cavity and feed back the temperature signal to the control unit.

[0014] As a preferred embodiment, it is further defined that the drying device includes a storage box, a fan and a fixed plate, the storage box is provided with mesh holes, an absorbent that can absorb moisture and grease is placed in the storage box, a vent is provided on the fixed plate, one end of the fixed plate is connected to the storage box, and the vent of the fixed plate is opposite to the storage box; the fan has an air inlet and an air outlet, the other end of the fixed plate is connected to the fan, and the vent of the fixed plate is opposite to the air inlet of the fan; the fan is controlled by a control unit and can drive the gas in the sealed cavity to pass through the mesh holes, the vent, the air inlet and the air outlet in sequence.

[0015] As a preferred embodiment, it is further defined that the absorbent is a molecular sieve.

[0016] As a preferred embodiment, it is further defined that the fan is a turbo fan.

[0017] A method for detecting humidity using the monitoring system comprises the following steps:

[0018] Setting the initial humidity value and the initial air pressure value in the monitoring system;

[0019] The control unit determines whether the detected humidity value is greater than the initial humidity value according to the feedback signal of the humidity detection unit. If the detected humidity value is greater than the initial humidity value, the control unit continues to determine whether the detected air pressure value is greater than the initial air pressure value according to the feedback signal of the air pressure detection unit. If the detected humidity value is less than or equal to the initial humidity value, the execution is stopped.

[0020] If the detected air pressure value is greater than the initial air pressure value, the control unit controls the extraction unit to open and extract part of the gas in the sealed cavity to discharge it out of the cavity until the detected air pressure value is less than or equal to the initial air pressure value. If the detected air pressure value is less than or equal to the initial air pressure value, the control unit controls the extraction unit to close.

[0021] The heat source is activated to generate heat, and the control unit controls the fan to start and perform the dehumidification action until the detected humidity value is less than the initial humidity value, then it can stop.

[0022] Furthermore, the control unit controls the electromagnetic valve to be opened when the pumping unit is turned on, and the control unit controls the electromagnetic valve to be closed when the pumping unit is turned off.

[0023] A method for detecting air tightness using the monitoring system comprises the following steps:

[0024] Setting an initial value of air pressure in the monitoring system;

[0025] The control unit determines whether the detected air pressure value is greater than the initial air pressure value according to the feedback signal of the air pressure detection unit; if the detected air pressure value is greater than the initial air pressure value, the control unit controls the extraction unit to open and extract part of the gas in the sealed cavity to discharge it out of the cavity until the detected air pressure value is less than or equal to the initial air pressure value; if the detected air pressure value is less than or equal to the initial air pressure value, the control unit controls the extraction unit to close;

[0026] Wait for the scheduled time;

[0027] The control unit determines again whether the detected air pressure value is less than or equal to the initial air pressure value based on the feedback signal of the air pressure detection unit; if the detected air pressure value is less than or equal to the initial air pressure value, the air tightness of the sealed cavity is qualified, otherwise, the air tightness of the sealed cavity is unqualified.

[0028] Furthermore, the control unit controls the electromagnetic valve to be opened when the pumping unit is turned on, and the control unit controls the electromagnetic valve to be closed when the pumping unit is turned off.

[0029] After adopting the above technical solution, the invention has at least the following beneficial effects:

[0030] 1. The extraction unit extracts some of the gas in the sealed cavity out of the cavity, making the cavity in a negative pressure state. When the heat source emits light and generates heat, it can effectively reduce the boiling point of water and grease, thereby accelerating the evaporation efficiency of water and grease; the vaporized water and grease will be absorbed by the drying device, so that the sealed cavity is maintained in a dry environment to ensure the normal operation and service life of the equipment, while avoiding the risk of moisture and oil gas adhering to the optical glass.

[0031] 2. The detection system of the present invention can also detect the air tightness of lighting products, saving a lot of detection time and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of a stage light;

[0033] Figure 2 It is a structural diagram of the base;

[0034] Figure 3 is an exploded view of the drying device;

[0035] Figure 4 It is the principle block diagram of the detection system;

[0036] Figure 5 It is a flow chart for detecting humidity;

[0037] Figure 6 It is a flow chart for testing air tightness. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments in the present application and the features described in the embodiments may be combined with each other. The present application is further described in detail below in conjunction with the drawings and specific embodiments.

[0039] As attached Figure 1 , Attachment Figure 2 and attached Figure 4 As shown, a stage light adaptive detection system is provided, wherein a sealed cavity 100 is provided in the stage light in which a heat source is installed, and the heat source is a light source, and the stage light comprises a base 101, a U-shaped support arm 102 and a head 103, wherein the inner space of the base, the inner space of the U-shaped support arm and the inner space of the head together form the sealed cavity 100; the detection system comprises a control unit 1, an air pressure detection unit 2, a humidity detection unit 3 and an exhaust unit 4 arranged in the sealed cavity 100, wherein an exhaust hole which can communicate with the outside is provided on the sealed cavity 100, wherein the exhaust unit 4 has an air suction port and an air outlet, wherein the air outlet of the exhaust unit 4 is connected to the exhaust hole through an air path, and the exhaust unit 4 can discharge part of the gas in the sealed cavity 100 out of the sealed cavity 100 through the air suction port, the air outlet and the exhaust hole in sequence, so that the sealed cavity 100 forms a negative pressure cavity; specifically, the control unit 1 is preferably a control chip, the air pressure detection unit 2 is preferably an air pressure sensor, the humidity detection unit 3 is preferably a humidity sensor, and the exhaust unit 4 is preferably an air pump.

[0040] In this embodiment, the air pressure detection unit 2 is used to detect the air pressure in the sealed cavity 100 and feed back the air pressure signal to the control unit 1; the humidity detection unit 3 is used to detect the humidity in the sealed cavity 100 and feed back the humidity signal to the control unit 1; the control unit 1 determines whether to perform a dehumidification action based on the humidity signal of the humidity detection unit 3; the control unit 1 also controls the exhaust unit 4 to start or shut down based on the air pressure signal of the air pressure detection unit 2; the detection system also includes a drying device 5, which is used to absorb moisture and / or grease in the sealed cavity 100.

[0041] Specifically, the working principle of the detection system is as follows: when the relative humidity of the sealed cavity 100 reaches a certain humidity value, the humidity detection unit 3 will convert the detected humidity value into an electrical signal and feed it back to the control unit, and the control unit will control the exhaust unit 4 to turn on. At this time, the exhaust unit 4 will extract some gas in the sealed cavity 100 out of the cavity, so that the cavity is in a negative pressure state. When the heat source emits light and generates heat, it can effectively reduce the boiling point of water and grease, thereby accelerating the evaporation efficiency of water and grease; the vaporized water and grease will be absorbed by the drying device 5, so that the sealed cavity 100 is maintained in a dry environment to ensure the normal operation and service life of the equipment, while avoiding the risk of moisture and oil gas adhering to the optical glass.

[0042] As attached Figure 2 and attached Figure 4 As shown, the air suction port of the extraction unit 4 is connected to the solenoid valve 6 through an air circuit, or / and the air outlet and the exhaust hole are connected to the solenoid valve 6 through an air circuit, and the control unit 1 can control the opening and closing of the solenoid valve 6 to control the conduction and closure of the air circuit.

[0043] As attached Figure 4 As shown, the detection system includes a temperature detection unit 7, which is used to detect the temperature inside the sealed cavity 100 and feed back the temperature signal to the control unit 1. The temperature detection unit 7 is a temperature sensor, which is used to detect the temperature change inside the sealed cavity 100.

[0044] As attached Figure 1 and attached Figure 3As shown, the drying device 5 includes a storage box 51, a fan 52 and a fixing plate 53. The storage box 51 is provided with mesh holes. An absorbent capable of absorbing moisture and grease is placed in the storage box 51. The absorbent is a plurality of granular molecular sieves, i.e., microporous aluminosilicate crystals. Compared with other desiccants, molecular sieves have the characteristics of uniform pore size and extremely high specific surface area, good thermal stability, strong adsorption performance, large internal surface area, and high strength. Furthermore, it has strong water absorption. Even at a relatively high temperature, the reduction condition of the molecular sieve requires baking at 200°C for 2 hours, but the temperature inside the lamp body is far from reaching that, the air velocity is relatively large, and the water content is relatively low, and it still has a relatively high water absorption capacity.

[0045] As attached Figure 3 As shown, the fixing plate 53 is provided with a vent 531, one end of the fixing plate 53 is connected to the storage box 51, and the vent 531 of the fixing plate 53 is opposite to the storage box 51; the fan 52 has an air inlet 521 and an air outlet 522, the other end of the fixing plate 53 is connected to the fan 52, and the vent 531 of the fixing plate 53 is opposite to the air inlet 521 of the fan 52; the fan 52 is controlled by the control unit 1 and can drive the gas in the sealed cavity 100 to pass through the mesh holes, the vent 531, the air inlet 521 and the air outlet 522 in sequence. The storage box and the fan can be fixedly installed in the internal space of the sealed cavity 100 at the same time by the fixing plate, so as to form a modular component, thereby improving the assembly efficiency of the lamp.

[0046] As attached Figure 5 The present invention provides a method for detecting humidity using the monitoring system, and the specific steps are as follows:

[0047] a. Set the initial humidity value and the initial air pressure value in the monitoring system; preferably, the initial humidity value sets the relative humidity RH in the range of 0-20%; the initial air pressure value is set in the range of -30KPa to -1kPa;

[0048] b. The control unit 1 determines whether the detected humidity value is greater than the initial humidity value according to the feedback signal of the humidity detection unit 3. If the detected humidity value is greater than the initial humidity value, the control unit 1 continues to determine whether the detected air pressure value is greater than the initial air pressure value according to the feedback signal of the air pressure detection unit 2. If the detected humidity value is less than or equal to the initial humidity value, the execution is stopped;

[0049] c. If the detected air pressure value is greater than the initial air pressure value, the control unit 1 controls the extraction unit 4 to open, and at the same time, the control unit 1 controls the solenoid valve 6 to open, so that the connecting air path is connected and part of the gas in the sealed cavity 100 is extracted and discharged out of the cavity until the detected air pressure value is less than or equal to the initial air pressure value. If the detected air pressure value is less than or equal to the initial air pressure value, the control unit 1 controls the extraction unit 4 to close, and at the same time, the control unit 1 controls the solenoid valve 6 to close;

[0050] d. Activate the heat source to generate heat, and the control unit 1 controls the fan 52 to start and perform the dehumidification action until the detected humidity value is less than the initial humidity value, and then stop.

[0051] This humidity detection method can monitor the humidity changes inside the lamp in real time, and can also perform the dehumidification function when the humidity exceeds the preset range, thereby ensuring the normal operation and service life of the equipment, while avoiding the risk of moisture and oil gas adhering to the optical glass.

[0052] As attached Figure 6 In addition, the present invention also provides a method for detecting air tightness using the monitoring system, and the specific steps are as follows:

[0053] a. Setting an initial pressure value in the monitoring system, preferably, the initial pressure value is set in the range of -30KPa to -1kPa;

[0054] b. The control unit 1 determines whether the detected air pressure value is greater than the initial air pressure value according to the feedback signal of the air pressure detection unit 2; if the detected air pressure value is greater than the initial air pressure value, the control unit 1 controls the pumping unit 4 to open, and at the same time, the control unit 1 controls the solenoid valve 6 to open, so that the air path is connected and part of the gas in the sealed cavity 100 is extracted and discharged out of the cavity until the detected air pressure value is less than or equal to the initial air pressure value; if the detected air pressure value is less than or equal to the initial air pressure value, the control unit 1 controls the pumping unit 4 to close, and at the same time, the control unit 1 controls the solenoid valve 6 to close;

[0055] c. Wait for the scheduled time, the waiting time is 5min-10min;

[0056] d. The control unit 1 determines again whether the detected air pressure value is less than or equal to the initial air pressure value according to the feedback signal of the air pressure detection unit 2; if the detected air pressure value is less than or equal to the initial air pressure value, the air tightness of the sealed cavity 100 is qualified, otherwise, the air tightness of the sealed cavity 100 is unqualified.

[0057] The method for detecting air tightness can quickly detect the air tightness of lighting products, saving a lot of detection time and production costs.

Claims

1. A stage light adaptive detection system, wherein a sealed cavity (100) is provided in the stage light for installing a heat source, characterized in that: The detection system comprises a control unit (1), an air pressure detection unit (2), a humidity detection unit (3) and an exhaust unit (4) arranged in a sealed cavity (100); an exhaust hole capable of communicating with the outside is arranged on the sealed cavity (100); the exhaust unit (4) has an exhaust port and an exhaust port; the exhaust port of the exhaust unit (4) is connected to the exhaust port via an air path; the exhaust unit (4) can exhaust part of the gas in the sealed cavity (100) out of the sealed cavity (100) through the exhaust port, the exhaust port and the exhaust hole in sequence, so that the sealed cavity (100) forms a negative pressure cavity; The air pressure detection unit (2) is used to detect the air pressure in the sealed cavity (100) and feed back the air pressure signal to the control unit (1); The humidity detection unit (3) is used to detect the humidity in the sealed cavity (100) and feed back the humidity signal to the control unit (1); The control unit (1) determines whether to perform a dehumidification action according to a humidity signal from the humidity detection unit (3); The control unit (1) also controls the pumping unit (4) to start or shut down according to the air pressure signal of the air pressure detection unit (2); The detection system also includes a drying device (5).

2. The stage light adaptive detection system according to claim 1, characterized in that: The air extraction port of the extraction unit (4) is connected to a solenoid valve (6) via an air circuit, or / and the air outlet and the exhaust hole are connected to a solenoid valve (6) via an air circuit, and the control unit (1) can control the opening and closing of the solenoid valve (6) to control the conduction and closing of the air circuit.

3. The stage light adaptive detection system according to claim 1, characterized in that: The detection system comprises a temperature detection unit (7), and the temperature detection unit (7) is used to detect the temperature in the sealed cavity (100) and feed back the temperature signal to the control unit (1).

4. The stage light adaptive detection system according to claim 1, characterized in that: The drying device (5) comprises a storage box (51), a fan (52) and a fixing plate (53); the storage box (51) is provided with mesh holes; an absorbent capable of absorbing moisture and grease is placed in the storage box (51); a vent (531) is provided on the fixing plate (53); one end of the fixing plate (53) is connected to the storage box (51); and the vent (531) of the fixing plate (53) is opposite to the storage box (51); the fan (52) is provided with mesh holes; an absorbent capable of absorbing moisture and grease is placed in the storage box (51); and a vent (531) of the fixing plate (53) is provided on the fixing plate (53); (52) has an air inlet (521) and an air outlet (522), the other end of the fixing plate (53) is connected to the fan (52), and the vent (531) of the fixing plate (53) is located opposite to the air inlet (521) of the fan (52); the fan (52) is controlled by the control unit (1) and can drive the gas in the sealed cavity (100) to pass through the mesh holes, the vent (531), the air inlet (521) and the air outlet (522) in sequence.

5. The stage light adaptive detection system according to claim 4, characterized in that: The absorbent is a molecular sieve.

6. The stage light adaptive detection system according to claim 4, characterized in that: The fan (52) is a turbo fan.

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