Lamp with automatic retraction lens based on signal monitoring of master controller

Abstract

The utility model discloses a main controller signal monitoring-based lamp with an automatically retracted lens, which comprises a host MCU (Microprogrammed Control Unit) module, a slave MCU module in communication connection with the host MCU module, a driving module controlled by the slave MCU module, a motor driven by the driving module, and a power supply module for simultaneously supplying power to the host MCU module, the slave MCU module and the driving module, the motor drives the light emitting lens to stretch out and draw back, and the host MCU module indirectly controls the driving module through the slave MCU module; and the energy storage module is used for supplying power to the slave MCU module after the power supply module stops supplying power. The host MCU module and the slave MCU module cooperatively work through communication connection, the real working state of the lamp can be sensitively detected, the protection action on the light-emitting lens is rapidly triggered, and damage caused by exposure of the light-emitting lens in the carrying process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stage lights, and more specifically, to a lamp with an automatically retractable lens based on the signal monitoring of a main controller. Background Art

[0002] In stage lights, the light spot shape is adjusted by moving the light-emitting lens away from or towards the light source. If enough moving space for the lens is provided entirely inside the lamp body, this will result in a relatively large volume of the lamp. In some existing compact stage lights, due to limited internal space, the light-emitting lens will partially protrude out of the light-emitting port during operation. When the lamp is powered off, if the lens still remains in the externally protruding position, the exposed lens is extremely vulnerable to external force collision during transportation or handling, causing structural damage such as lens breakage and deformation of the focusing mechanism, which directly affects the reliability and service life of the device.

[0003] Currently, some solutions are that before the lamp is powered off, the staff controls the driving component to retract the light-emitting lens into the light-emitting port and then powers off. However, in the case of a large number of lamps, the working efficiency is low, and if there is an accidental power outage, the light-emitting lens cannot be retracted. Therefore, there is an urgent need for a design that can trigger the automatic reset of the light-emitting lens after power-off, without relying on external protection or manual intervention, effectively reducing transportation risks while maintaining the advantage of the small-sized design of the lamp. Summary of the Utility Model

[0004] The utility model aims to overcome at least one of the above-mentioned defects in the prior art, and provides a lamp with an automatically retractable lens based on the signal monitoring of a main controller. The slave MCU module is used to detect the working state of the lamp, and when it detects that the lamp is powered off, it controls the light-emitting lens to automatically retract.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: a lamp with an automatically retractable lens based on the signal monitoring of a main controller, including a host MCU module, a slave MCU module communicatively connected to the host MCU module, a driving module controlled by the slave MCU module, a motor driven by the driving module, and a power supply module that supplies power to the host MCU module, the slave MCU module, and the driving module at the same time. The motor drives the light-emitting lens to expand and contract, and the host MCU module indirectly controls the driving module through the slave MCU module; it further includes an energy storage module that stops supplying power to the slave MCU module by the power supply module. When the slave MCU module waits for the signal from the host MCU module for more than a predetermined time, the slave MCU module controls the motor to drive the light-emitting lens to retract into the lamp interior, and the energy storage module is charged by the power supply module.

[0006] When the lamp is powered on and working, the power module supplies power to the host MCU module, the slave MCU module and the drive module at the same time. The host MCU module forwards the control signal through the slave MCU module to indirectly control the drive module, so that the motor drives the light-emitting lens to expand and contract according to the instruction, and regularly sends a signal representing its own power-on state to the slave MCU module. When the power module is powered off, the host MCU module stops working, and the slave MCU module is powered by the energy storage module instead. If the slave MCU module does not receive a signal from the host MCU module within a predetermined time, it is determined that the lamp is powered off, and the motor is immediately controlled through the drive module to retract the light-emitting lens into the lamp body. The host MCU module and the slave MCU module work together through communication connection, can sensitively detect the true working state of the lamp, quickly trigger the protection action for the light-emitting lens, and avoid damage due to the exposure of the light-emitting lens during handling. Since the lamps on the market will choose to use battery power supply or AC power supply, and using this solution, there is no need to replace the module according to the corresponding power supply current type to detect the power-on state of the lamp, which is more compatible and the implementation method is simpler and more reliable.

[0007] Further, after passing through the reverse protection module, the power module is electrically connected to the energy storage module, the slave MCU module and the drive module. The reverse protection module can prevent the energy storage module from supplying power to the host MCU module and the power module in reverse when the power module is powered off, effectively saving electric energy. At the same time, it also avoids mis-signaling due to the host MCU module receiving electric energy from the energy storage module, effectively ensuring the accuracy of the judgment of the slave MCU module.

[0008] Further, the reverse protection module is a diode module. The diode module has the characteristic of unidirectional conduction, can effectively block the reverse current, and has a simple structure, which is suitable for most circuit structures.

[0009] Further, the host MCU module and the slave MCU module are communicatively connected through a CAN bus module. The communication connection established through the CAN bus module has good real-time performance, reliability and scalability, and is especially suitable for intelligent lamp control systems with high reliability requirements and multi-node cooperation.

[0010] Further, the host MCU module and the slave MCU module are communicatively connected through an RS485 bus module. The RS485 bus module can convert the serial port signal sent by the host MCU module into a differential signal for transmission. Such a transmission method has good anti-interference performance and is more suitable for the use scenario where the electromagnetic environment inside the lamp is complex.

[0011] Further, the RS485 bus module includes two RS485 interface chips. The host MCU module is connected to the receiving pin, output pin, and enabling pin of one of the RS485 interface chips, and the slave MCU module is connected to the receiving pin, output pin, and enabling pin of the other RS485 interface chip. The two RS485 interface chips are correspondingly connected through their respective differential positive terminals and differential negative terminals. The serial port signal sent by the host MCU module is converted into a differential signal for transmission and finally converted back into a serial port signal and transmitted to the slave MCU module. During the signal transmission process, compared with the serial port signal, the differential signal has stronger stability.

[0012] Further, the energy storage module includes at least one energy storage capacitor for energy storage. Through the energy storage capacitor, energy can be temporarily stored, which is significantly superior to the battery solution in terms of response speed, space occupation, and system reliability, and is safer.

[0013] Further, at least one energy-consuming resistor is connected in parallel with the energy storage capacitor. When the light-emitting lens successfully retracts into the lamp body, the energy-consuming resistor can consume the excess electric energy in the energy storage capacitor.

[0014] Further, after the current of the power supply module enters the energy storage module, it successively passes through the surge-resistant resistor and the energy storage capacitor and then grounds. The surge-resistant resistor is set to limit the transient large current or voltage spike in the circuit to achieve "soft start" of the circuit.

[0015] Further, a fuse is also provided between the power supply module and the surge-resistant resistor. An anti-reverse diode for preventing reverse connection between the energy storage module and the power supply module is connected in parallel with the surge-resistant resistor and / or the energy storage capacitor. When the wiring between the power supply module and the surge-resistant resistor is correct, the current bypasses the anti-reverse diode, while when the energy storage module and the power supply module are reversely connected, the current flows through the anti-reverse diode, and since the current is too large, the fuse will blow, effectively avoiding damage to other components on the circuit.

[0016] Further, the predetermined time is between 10 ms and 1000 ms. Within this time range, the slave MCU module can quickly identify the real-time working state of the lamp and promptly retract the light-emitting lens into the lamp body, realizing the function that the light-emitting lens can automatically retract after the lamp is powered off.

[0017] Further, it also includes a light source composed of several light-emitting elements. Under the control of the slave MCU module, the light-emitting lens expands or contracts along the direction away from or close to the light source. At this time, the size of the light spot projected by the lamp or the imaging clarity of the light spot will also change accordingly, forming a rich stage effect. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the principle of automatic retraction of the lens based on the signal monitoring of the main controller of the present utility model.

[0019] Figure 2 It is a schematic circuit diagram of the RS485 interface chip described in the present utility model.

[0020] Figure 3 It is a schematic circuit diagram of the energy storage module described in the present utility model.

[0021] Figure 4 It is a schematic structural diagram of the light-emitting lens retracted into the lamp body of the present utility model.

[0022] Figure 5 It is a schematic structural diagram of the light-emitting lens extending out of the lamp body of the present utility model.

[0023] In the figure:

[0024] 110. Host MCU module; 120. Slave MCU module; 130. Driving module; 140. Motor; 150. Power supply module; 160. Light-emitting lens; 170. Energy storage module; 180. Anti-reverse module; 190. RS485 bus module; 191. RS485 interface chip; R. Receive pin; T. Output pin; RE. Receive enable pin; DE. Driver enable pin; EN. MCU enable pin; VDD. Power positive pin; A. Differential positive terminal pin; B. Differential negative terminal pin; D1. Anti-reverse diode; R1. Pull-up resistor; R2. Pull-down resistor; C1. Energy storage capacitor; R3. Energy-consuming resistor; R4. Surge-resistant resistor; FUSE. Fuse; 200. Lamp holder; 210. Light-emitting port; 300. Support arm; 400. Chassis. Detailed Embodiment

[0025] The drawings are only for illustrative purposes and should not be construed as a limitation to this patent; for better explaining this embodiment, some components in the drawings may be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as a limitation to this patent.

[0026] Such as Figure 1 、 Figure 4 And Figure 5As shown in the figure, a lamp with an automatically retractable light-emitting lens based on the signal monitoring of a master controller includes a host MCU module 110, a slave MCU module 120 communicatively connected to the host MCU module 110, a driving module 130 controlled by the slave MCU module 120, a motor 140 driven by the driving module 130, and a power supply module 150 that supplies power to the host MCU module 110, the slave MCU module 120, and the driving module 130 simultaneously. The motor 140 drives the light-emitting lens 160 to expand and contract. The host MCU module 110 indirectly controls the driving module 130 through the slave MCU module 120. It further includes an energy storage module 170 that supplies power to the slave MCU module 120 when the power supply module 150 stops supplying power. When the slave MCU module 120 waits for a signal from the host MCU module 110 for more than a predetermined time, the slave MCU module 120 controls the motor 140 to drive the light-emitting lens 160 to retract into the lamp body. The energy storage module 170 is charged by the power supply module 150.

[0027] When the lamp is powered on and working, the power supply module 150 supplies power to the host MCU module 110, the slave MCU module 120, and the driving module 130 simultaneously. The host MCU module 110 forwards the control signal through the slave MCU module 120 to indirectly control the driving module 130, so that the motor 140 drives the light-emitting lens 160 to expand and contract according to the instruction, and regularly sends a signal representing its own power-on state to the slave MCU module 120. When the power supply module 150 is powered off, the host MCU module 110 stops working, and the slave MCU module 120 is powered by the energy storage module 170 instead. If the slave MCU module 120 does not receive a signal from the host MCU module 110 within a predetermined time, it is determined that the lamp is powered off, and immediately controls the motor 140 through the driving module 130 to retract the light-emitting lens 160 into the lamp body. The host MCU module 110 and the slave MCU module 120 work together through the communication connection, can sensitively detect the true working state of the lamp, quickly trigger the protection action for the light-emitting lens 160, and avoid damage due to the exposure of the light-emitting lens 160 during handling. Since commercial lamps will choose to use battery power supply or AC power supply, and with this solution, there is no need to replace modules according to the corresponding power supply current type to detect the power-on state of the lamp, which is more compatible and the implementation method is simpler and more reliable.

[0028] Preferably, it further includes a chassis 400, a support arm 300 pivotally connected above the chassis 400, and a lamp head 200 pivotally connected to the inner side of the support arm 300. A light source for generating light beams is installed at one end inside the lamp head 200, and a light outlet 210 is provided at the end far from the light source. Driven by the motor 140, the light outlet lens 160 can extend out of the light outlet 210 or retract into the light outlet 210. After the lamp stops working, the slave MCU module 120 controls the light outlet lens 160 to retract into the lamp body through the light outlet 210, effectively ensuring its safety during handling.

[0029] Preferably, the motor 140 is a lead screw motor, and according to design requirements, the number is selected as two or three, so that the light outlet lens 160 is more evenly stressed during the telescopic movement.

[0030] Optionally, a slide rail, a slider, and a guide post can also be provided inside the lamp to guide the movement of the light outlet lens 160. The light outlet lens 160 is fixedly connected to the slider, and the motor 140 is a stepper motor.

[0031] Preferably, the power supply module 150 is a switching power supply connected to the mains. When the lamp works normally, it is powered by the mains, so that it can work for a long time. The switching power supply converts the mains into constant voltage direct current to supply power to the lamp.

[0032] Preferably, the host MCU module 110 and the slave MCU module 120 can be communicatively connected through the CAN protocol, the RS485 protocol, or other protocols that can stably transmit signals.

[0033] In a preferred embodiment of the present invention, after passing through the reverse protection module 180, the power supply module 150 is electrically connected to the energy storage module 170, the slave MCU module 120, and the driving module 130. The reverse protection module 180 can prevent the energy storage module 170 from supplying power to the host MCU module 110 and the power supply module 150 in reverse when the power supply module 150 is powered off, effectively saving electric energy. At the same time, it also avoids the host MCU module 110 from misissuing signals due to receiving electric energy from the energy storage module 170, effectively ensuring the accuracy of the judgment of the slave MCU module 120.

[0034] In a preferred embodiment of the present invention, the reverse protection module 180 is a diode module. The diode module has the characteristic of unidirectional conduction, can effectively block the reverse current, and has a simple structure, which is suitable for most circuit structures.

[0035] In other embodiments of the present invention, the reverse protection module can be selected as a MOS transistor.

[0036] In a preferred embodiment of the present utility model, the host MCU module 110 and the slave MCU module 120 are communicatively connected through a CAN bus module. The communication connection established through the CAN bus module has good real-time performance, reliability, and scalability, and is particularly suitable for an intelligent lighting control system with high reliability requirements and multi-node collaboration.

[0037] As Figure 1 and Figure 2 shown, in a preferred embodiment of the present utility model, the host MCU module 110 and the slave MCU module 120 are communicatively connected through an RS485 bus module 190. The RS485 bus module 190 can convert the serial port signal sent by the host MCU module 110 into a differential signal for transmission. Such a transmission method has good anti-interference performance and is more suitable for the usage scenario where the electromagnetic environment inside the lamp is complex.

[0038] In a preferred embodiment of the present utility model, the RS485 bus module 190 includes two RS485 interface chips 191. The host MCU module 110 is connected to the receiving pin R, output pin T, and enable pin of one of the RS485 interface chips 191, and the slave MCU module 120 is connected to the receiving pin R, output pin T, and enable pin of the other RS485 interface chip 191. The two RS485 interface chips 191 are correspondingly connected through their respective differential positive terminal pins A and differential negative terminal pins B. After converting the serial port signal sent by the host MCU module 110 into a differential signal for transmission and finally converting it back into a serial port signal and transmitting it to the slave MCU module 120, during the signal transmission process, compared with the serial port signal, the differential signal has stronger stability.

[0039] Preferably, the signal output terminal of the host MCU module 110 is connected to the receiving pin R of one of the RS485 interface chips 191, and its signal receiving terminal is connected to the output pin T of the RS485 interface chip 191. The receiving pin R and the output pin T are respectively connected to a 3.3V voltage source through a pull-up resistor R1. After the receiving enable pin RE and the driving enable pin DE of the RS485 interface chip 191 are connected to form its own enable pin, it is connected to the MCU enable pin EN of the host MCU module 110. At the same time, the enable pin of the RS485 interface chip 191 is grounded through a pull-down resistor R2; the positive power supply pin VDD of the RS485 interface chip 191 is connected to a 3.3V voltage source; the connection method of the other RS485 interface chip 191 to the slave MCU module 120 is similar. Then, the differential positive terminal pins A and the differential negative terminal pins B of the two RS485 interface chips 191 are correspondingly connected. At this time, the serial port signal sent by the host MCU module 110 is converted into a differential signal by the RS485 interface chip 191, transmitted to the other RS485 interface chip 191, and then the differential signal is converted into a serial port signal and transmitted to the slave MCU module 120 to complete the communication.

[0040] Preferably, the differential positive terminal pin A is connected to a 3.3V voltage source through a pull-up resistor R1, and the differential negative terminal pin B is grounded through a pull-down resistor R2.

[0041] As Figure 1 and Figure 3 shown, in a preferred embodiment of the present invention, the energy storage module 170 includes at least one energy storage capacitor C1 for energy storage. Through the energy storage capacitor C1, energy can be temporarily stored, which is significantly superior to the battery solution in terms of response speed, space occupancy and system reliability, and is safer.

[0042] Preferably, the energy storage module 170 includes two energy storage capacitors C1 connected in parallel to increase its energy storage capacity.

[0043] In other embodiments of the present invention, the energy storage module 170 can use a rechargeable battery to replace the energy storage capacitor C1.

[0044] In a preferred embodiment of the present invention, at least one energy dissipation resistor R3 is connected in parallel with the energy storage capacitor C1. When the light-emitting lens 160 successfully retracts into the lamp body, the energy dissipation resistor R3 can consume the excess electric energy in the energy storage capacitor C1.

[0045] In a preferred embodiment of the present utility model, after the current of the power supply module 150 enters the energy storage module 170, it sequentially passes through the surge-resistant resistor R4 and the energy storage capacitor C1 and then grounds. The setting of the surge-resistant resistor R4 is to limit the transient large current or voltage spike in the circuit, realize the "soft start" of the circuit, avoid the charging current of the energy storage module 170 reaching the current limit value of the power supply module 150 at the moment of startup, and reduce the current stress on the charging circuit.

[0046] In a preferred embodiment of the present utility model, it further includes a fuse FUSE arranged between the power supply module 150 and the surge-resistant resistor R4. An anti-reverse diode D1 for preventing reverse connection between the energy storage module 170 and the power supply module 150 is connected in parallel with the surge-resistant resistor R4 and / or the energy storage capacitor C1. When the wiring between the power supply module 150 and the surge-resistant resistor R4 is correct, the current bypasses the anti-reverse diode D1, while when the energy storage module 170 and the power supply module 150 are reversely connected, the current flows through the anti-reverse diode D1, and the fuse FUSE will blow due to excessive current, effectively avoiding damage to other components on the circuit.

[0047] Preferably, an anti-reverse diode D1 for preventing reverse connection between the energy storage module 170 and the power supply module 150 is connected in parallel with both the surge-resistant resistor R4 and the energy storage capacitor C1.

[0048] Preferably, the surge-resistant resistor R4 is a thermistor.

[0049] As Figure 1 、 Figures 4 to 5 shown, in a preferred embodiment of the present utility model, the predetermined time is between 10 ms and 1000 ms. Within this time range, the slave MCU module 120 can quickly identify the real-time working state of the lamp, and timely retract the light-emitting lens 160 into the lamp body, realizing the function that the light-emitting lens 160 can automatically retract after the lamp is powered off.

[0050] Preferably, the predetermined time is 20 ms.

[0051] In a preferred embodiment of the present utility model, it further includes a light source composed of a plurality of light-emitting elements. Under the control of the slave MCU module 120, the light-emitting lens 160 expands and contracts along the direction away from or close to the light source. At this time, the size of the light spot projected by the lamp or the imaging clarity of the light spot will also change accordingly, forming a rich stage effect.

[0052] Optionally, the light source is a high-power LED module.

[0053] Obviously, the above embodiments of the present utility model are merely examples given to clearly illustrate the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A lamp with an automatically retractable lens based on the signal monitoring of a master controller, characterized in that, It includes a host MCU module (110), a slave MCU module (120) communicatively connected to the host MCU module (110), a driving module (130) controlled by the slave MCU module (120), a motor (140) driven by the driving module (130), and a power supply module (150) that supplies power to the host MCU module (110), the slave MCU module (120), and the driving module (130) simultaneously. The motor (140) drives the light-emitting lens (160) to expand and contract, and the host MCU module (110) indirectly controls the driving module (130) through the slave MCU module (120); it also includes an energy storage module (170) that supplies power to the slave MCU module (120) after the power supply module (150) stops supplying power. When the slave MCU module (120) waits for a signal from the host MCU module (110) for more than a predetermined time, the slave MCU module (120) controls the motor (140) to drive the light-emitting lens (160) to retract into the lamp, and the energy storage module (170) is charged by the power supply module (150).

2. The luminaire according to claim 1, characterized in that, After passing through an anti-reverse module (180), the power supply module (150) is electrically connected to the energy storage module (170), the slave MCU module (120), and the driving module (130).

3. The luminaire according to claim 2, characterized in that, The anti-reverse module (180) is a diode module.

4. The luminaire according to claim 1, characterized in that, The host MCU module (110) and the slave MCU module (120) are communicatively connected through a CAN bus module.

5. The luminaire according to claim 1, characterized in that, The host MCU module (110) and the slave MCU module (120) are communicatively connected through an RS485 bus module (190).

6. The luminaire according to claim 5, characterized in that, The RS485 bus module (190) includes two RS485 interface chips (191). The host MCU module (110) is connected to the receiving pin (R), output pin, and enable pin of one of the RS485 interface chips (191), and the slave MCU module (120) is connected to the receiving pin (R), output pin (T), and enable pin of the other RS485 interface chip (191). The two RS485 interface chips (191) are correspondingly connected through their respective differential positive terminals (A) and differential negative terminals (B).

7. The luminaire according to claim 1, characterized in that, The energy storage module (170) includes at least one energy storage capacitor (C1) for energy storage.

8. The luminaire according to claim 7, characterized in that, At least one energy-consuming resistor (R3) is connected in parallel with the energy storage capacitor (C1).

9. The luminaire according to claim 7, characterized in that, After the current of the power supply module (150) enters the energy storage module (170), it successively passes through a surge-resistant resistor (R4) and the energy storage capacitor (C1) and then grounds.

10. The lighting fixture according to claim 9, characterized in that, It also includes a fuse (FUSE) disposed between the power supply module (150) and the surge-resistant resistor (R4). An anti-reverse diode (D1) that prevents reverse connection between the energy storage module (170) and the power supply module (150) is connected in parallel with the surge-resistant resistor (R4) and / or the energy storage capacitor (C1).

11. The luminaire according to claim 1, characterized in that, The predetermined time is between 10 ms and 1000 ms.

12. The luminaire according to claim 1, characterized in that, It further includes a light source composed of a plurality of light-emitting elements, and the light-emitting lens (160) expands and contracts in a direction away from or close to the light source under the control of the slave MCU module (120).

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