Lamp with current shunting abnormity detection function
Through the combination of multiple thin cables and current detectors, the problem of high cable costs and easy damage to the lamp under high power loads is solved, and stable power supply and reduced damage risk are achieved, ensuring performance results.
Patent Information
- Application Number
- CN202422414466.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-30
AI Technical Summary
When existing lamps have high load power, the cost of using thin cables to transmit current is high and easy to damage, which affects the performance effect.
Multiple thin cables with small current load capacity are used to connect the load and switching power supply in parallel, and are equipped with a current detector to monitor the current of each cable in real time to detect abnormal situations in a timely manner.
The normal power supply of the load is achieved, the cable costs and damage risks are reduced, the performance effect is stable, the cable is flexible and the layout is clear, and the maintenance is easy.
Smart Images
Figure CN223309991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stage lamps, and more particularly to a lamp with a current shunt anomaly detection function. Background Art
[0002] For various reasons, some lighting fixtures cannot use thick cables to transmit power between the load and the switching power supply. However, the load requires high power and a large current to operate properly. Currently, thin cables that can transmit high currents are often extremely expensive and unsuitable for daily use, causing significant headaches for developers. Utility Model Content
[0003] In order to overcome at least one of the defects of the above-mentioned prior art, the present invention provides a lamp with a current shunt anomaly detection function. A plurality of thin cables with a small current carrying upper limit are selected and connected in parallel to connect the load to the switching power supply, thereby achieving normal power supply to the load.
[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a lamp with a current shunt abnormality detection function, including a load and a switching power supply for supplying power to the load, at least one power supply terminal of the switching power supply and the power terminal corresponding to the load are connected by at least two parallel cables, and also includes a current detector for detecting the current on each of the cables, and the current detector is connected to a control unit.
[0005] The lamp with current shunt anomaly detection function connects the load to the switching power supply through multiple thin cables connected in parallel. The sum of the currents in the multiple thin cables equals the original required current value, thereby meeting its operating requirements. At the same time, a current detector monitors the current in each cable to promptly detect current anomalies in the cables. This prevents the load from operating for a period of time and causing the current values of the parallel cables to differ significantly due to various reasons, causing the current of one cable to exceed its maximum load capacity. Ultimately, the cable or its socket will burn out, causing the load to malfunction and affecting the performance.
[0006] Furthermore, the load is a light source. As the device with the highest power consumption in the lamp, the light source also requires the largest operating current. By connecting multiple thin cables with a smaller current carrying limit in parallel to supply power to the light source, the requirements for the cables can be reduced.
[0007] Furthermore, the load is located within the lamp head of the lamp, the switching power supply is located within the base of the lamp, the lamp head is pivotally connected to the base, and the cable passes through the pivot axis of the lamp head and is connected to the load. Since the thin cable is used, it has greater flexibility. When the lamp head rotates relative to the base, the thin cable can allow the lamp head to rotate relative to the base at a greater angle and a greater number of times.
[0008] Furthermore, the base includes a support arm that supports the rotation of the lamp head, and a chassis that supports the rotation of the support arm. The switching power supply is located within the chassis, and the cable passes through the pivot axis of the support arm relative to the chassis and the pivot axis of the lamp head relative to the support arm to connect to the load. The lamp head rotates relative to the support arm, and the support arm rotates relative to the chassis, thereby allowing the light source to be projected in any direction. The switching power supply is arranged within the chassis to facilitate heat dissipation and space utilization.
[0009] Furthermore, the cables connected to the same power supply terminal of the switching power supply are twisted together, so that the circuit layout is clear and it is not easy to make mistakes in wiring during maintenance and installation.
[0010] Furthermore, the current detector corresponds to the cable one by one. Compared with one current detector detecting each cable in turn, this solution can monitor the current flowing through each cable in real time, and has a simple structure and is easy to design.
[0011] Furthermore, the switching power supply has two power supply terminals, and the load also has two power connection terminals. Each power supply terminal of the switching power supply is connected to the corresponding power connection terminal of the load via two parallel cables. In this way, while satisfying the power supply requirements of the load, the cables will not be redundant or entangled.
[0012] Furthermore, the current detector is connected in series to the cable, so as to detect slight changes in the current on the cable, with higher detection accuracy.
[0013] Furthermore, the current detector includes a CH701 detection chip, and the two current input pins and two current output pins of the CH701 detection chip are connected in parallel, and then the current detector is connected in series to the cable. This can reduce the current requirements for each current input pin and current output pin of the CH701 detection chip, thereby reducing costs.
[0014] Furthermore, the control unit pre-stores the safety current threshold of the cables and includes a warning device connected to the control unit that issues a warning when the current detector detects that the current of any of the cables exceeds the safety current threshold. This allows the user to promptly detect abnormal current in the cables and, if the lamp does not work, replace the cables or check the circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the lamp with the current shunt abnormality detection function of the present invention.
[0016] Figure 2 The utility model is a schematic diagram of the detection principle of the lamp with the current shunt abnormality detection function.
[0017] Figure 3 This is a schematic diagram of the connection structure between the CH701 detection chip and the cable of the utility model.
[0018] In the picture:
[0019] 100, load; 200, switching power supply; 300, cable; 400, current detector; 500, control unit; 600, lamp holder; 700, support arm; 800, chassis; 900, pivot shaft. DETAILED DESCRIPTION
[0020] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.
[0021] like Figures 1 to 2 The present invention provides a lamp with a current shunt anomaly detection function, comprising a load 100 and a switching power supply 200 for supplying power to the load 100, wherein at least one power supply terminal of the switching power supply 200 is connected to a corresponding power terminal of the load 100 via at least two parallel cables 300, and further comprising a current detector 400 for detecting the current on each of the cables 300, wherein the current detector 400 is connected to a control unit 500.
[0022] The lamp with current diversion anomaly detection function connects the load 100 to the switching power supply 200 by connecting multiple thin cables 300 in parallel. The sum of the currents flowing through the multiple thin cables 300 equals the required current value, thereby meeting its operating requirements. A current detector 400 also monitors the current flowing through each cable 300 to promptly detect current anomalies within the cables 300. This prevents the load 100 from operating for a period of time, where the current values of the parallel cables 300 may become increasingly different due to various reasons, causing the current of a particular cable 300 to exceed its maximum load capacity. This could ultimately cause the cable 300 or its socket to burn out, resulting in the load 100 malfunctioning and affecting the performance.
[0023] The load 100 can be a high-power device such as a motor or a light source. In a preferred embodiment of the present invention, the load 100 is a light source. As the device with the highest power consumption within a lamp, the light source also requires the highest operating current. Using multiple thin cables 300 with a lower current carrying capacity in parallel to power the light source can reduce the requirements for the cables 300.
[0024] In a preferred embodiment of the present invention, the load 100 is located within the lamp base 600 of the lamp, the switching power supply 200 is located within the base of the lamp, the lamp base 600 is pivotally connected to the base, and the cable 300 passes through the pivot axis 900 of the lamp base 600 to connect to the load 100 (the pivot axis 900 extends through the lamp base 600). The thin cable 300 provides greater flexibility, allowing the lamp base 600 to rotate at a greater angle and a greater number of times relative to the base.
[0025] In a preferred embodiment of the present invention, the base includes a support arm 700 for supporting the rotation of the lamp head 600, and a chassis 800 for supporting the rotation of the support arm 700. The switching power supply 200 is located within the chassis 800. The cable 300 passes through a pivot axis 900 of the support arm 700 relative to the chassis 800 and a pivot axis 900 of the lamp head 600 relative to the support arm 700, and is connected to the load 100. The lamp head 600 rotates relative to the support arm 700, and the support arm 700 rotates relative to the chassis 800, thereby enabling the light source to be projected in any direction. Furthermore, the placement of the switching power supply 200 within the chassis 800 facilitates heat dissipation and space utilization.
[0026] In a preferred embodiment of the present invention, the cables 300 connected to the same power supply terminal of the switching power supply 200 are twisted together, so that the circuit layout is clear and it is not easy to make a wrong connection during maintenance and installation.
[0027] Furthermore, all the cables 300 connecting the switching power supply 200 and the load 100 are twisted together.
[0028] The number of current detectors 400 can be one or more. When the number of current detectors 400 is less than the number of cables 300, the current detectors 400 detect the current of each cable 300 in turn. In a preferred embodiment of the present invention, each current detector 400 corresponds to each cable 300. Compared to a single current detector 400 detecting each cable 300 in turn, this solution can monitor the current flowing through each cable 300 in real time, and has a simple structure and is easy to design.
[0029] One power supply terminal of the switching power supply 200 is typically connected to the corresponding power terminal of the load 100 via two to five parallel cables 300. In a preferred embodiment of the present invention, the switching power supply 200 has two power supply terminals (one positive and one negative), and the load 100 also has two power terminals (one positive and one negative). Each positive power supply terminal of the switching power supply 200 is connected to the corresponding positive power terminal of the load 100 via parallel wires A and E, and each negative power supply terminal of the switching power supply 200 is connected to the corresponding negative power terminal of the load 100 via parallel wires D and H. In this way, while ensuring sufficient power supply to the load 100, the cables 300 are not redundant or tangled.
[0030] The current detector 400 can detect the current on the cable 300 in a variety of ways, such as parallel connection, series connection, or induction connection. In a preferred embodiment of the present invention, the current detector 400 is connected in series with the cable 300. This allows the detection of subtle changes in the current on the cable 300, resulting in higher detection accuracy.
[0031] like Figure 3 In a preferred embodiment of the present invention, the current detector 400 includes a CH701 detection chip. The two current input pins and two current output pins of the CH701 detection chip are connected in parallel, and then the current detector 400 is connected in series to the cable 300. This reduces the current requirements for each of the current input pins and current output pins of the CH701 detection chip, thereby reducing costs.
[0032] The peripheral circuit of the CH701 detection chip is simple, so the strong current and the weak current are isolated from each other. The power supply voltage is 5V, and the power supply voltage is grounded and filtered through a capacitor. The detection output end of the CH701 detection chip is connected to the control unit 500, and the filter end of the CH701 detection chip is grounded and filtered through another capacitor. The ground end of the CH701 detection chip is directly grounded.
[0033] In a preferred embodiment of the present invention, the control unit 500 pre-stores the safety current threshold of the cables 300 and also includes an alarm device connected to the control unit 500 that issues an alarm when the current detector 400 detects that the current of any cable 300 exceeds the safety current threshold. This allows the user to promptly detect abnormal current flow in the cables 300, allowing the user to replace the cables 300 or check the circuit if the lamp does not function.
[0034] In this embodiment, the specifications of each cable 300 are the same, and the corresponding safety current thresholds are also the same.
[0035] The warning device may be a speaker, a light or a display screen. In this embodiment, the warning device is preferably a display screen.
[0036] Furthermore, the display screen belongs to a console connected to the control units 500 of multiple lamps, and the display screen displays the alarm information and the numbers of the corresponding lamps at the same time.
[0037] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. A lamp with a current shunt anomaly detection function, characterized in that: The invention comprises a load (100) and a switching power supply (200) for supplying power to the load (100), wherein at least one power supply terminal of the switching power supply (200) is connected to a power terminal corresponding to the load (100) via at least two parallel cables (300), and further comprises a current detector (400) for detecting the current on each cable (300), wherein the current detector (400) is connected to a control unit (500).
2. The lamp with current shunt abnormality detection function according to claim 1, characterized in that: The load (100) is a light source.
3. The lamp with current shunt anomaly detection function according to claim 1 or 2, characterized in that: The load (100) is located in a lamp holder (600) of the lamp, the switching power supply (200) is located in a base of the lamp, the lamp holder (600) is pivotally connected to the base, and the cable (300) passes through a pivot axis (900) of the lamp holder (600) and is connected to the load (100).
4. The lamp with current shunt anomaly detection function according to claim 3, characterized in that: The base comprises a support arm (700) for supporting the rotation of the lamp head (600) and a chassis (800) for supporting the rotation of the support arm (700); the switching power supply (200) is located in the chassis (800); the cable (300) passes through a pivot axis (900) of the support arm (700) relative to the chassis (800) and a pivot axis (900) of the lamp head (600) relative to the support arm (700) in sequence to be connected to the load (100).
5. The lamp with current shunt anomaly detection function according to claim 1, characterized in that: The cables (300) connected to the same power supply terminal of the switching power supply (200) are twisted together.
6. The lamp with current shunt anomaly detection function according to claim 1, characterized in that: The current detector (400) corresponds to the cable (300) on a one-to-one basis.
7. The lamp with current shunt abnormality detection function according to claim 6, characterized in that: The switching power supply (200) has two power supply terminals, and the load (100) also has two power connection terminals. Each power supply terminal of the switching power supply (200) is connected to a corresponding power connection terminal of the load (100) via two parallel cables (300).
8. The lamp with current shunt anomaly detection function according to claim 1 or 6, characterized in that: The current detector (400) is connected in series to the cable (300).
9. The lamp with current shunt abnormality detection function according to claim 8, characterized in that: The current detector (400) comprises a CH701 detection chip, and the two current input pins and the two current output pins of the CH701 detection chip are connected in parallel, and then the current detector (400) is connected in series to the cable (300).
10. The lamp with current shunt abnormality detection function according to claim 1, characterized in that: The control unit (500) pre-stores the safety current threshold of the cable (300), and further comprises a warning device connected to the control unit (500) for issuing a warning when the current detector (400) detects that the current of any cable (300) exceeds the safety current threshold.