An adaptive constant voltage power supply
By designing an adaptive constant voltage power supply, using the sampling comparison module and the main control module to determine the working status of the LED light strip, and switching to a matching power supply module through the power switching module, the problem of LED constant voltage power supply in the prior art requires multiple specifications of corresponding connections, achieving the effect of reducing costs and improving versatility.
Patent Information
- Application Number
- CN202420729825.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-09
AI Technical Summary
Existing LED constant voltage power supplies require multiple specifications of constant voltage power supplies to be connected one by one with multiple specifications of LED light strips, resulting in increased costs and material backlog.
An adaptive constant voltage power supply is designed, including at least two power supply modules, sampling and comparison modules, main control modules and power switching modules. By sampling and comparison modules, the main control module judges the working status of the LED light strip and switches to a power supply module that matches the LED light strip through the power switching module.
It realizes automatic matching of LED light strips with a variety of specifications of constant voltage power supplies, reduces cost, reduces material backlog, and improves the versatility and flexibility of the system.
Smart Images
Figure CN222750605U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of LED constant voltage power supply, in particular to an adaptive constant voltage power supply. Background Art
[0002] The voltage of existing LED constant voltage power supply includes 12V, 24V, 48V and other specifications. LED light strips must match a certain specification of constant voltage power supply to work properly. The existing technology generally connects each LED light strip with a constant voltage power supply of the corresponding specification. LED light strips of multiple specifications need to be connected to multiple specifications of constant voltage power supplies one by one, which increases costs, backlogs of materials and finished products, and brings economic burdens to each link. Utility Model Content
[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an adaptive constant voltage power supply with low cost and good versatility.
[0004] According to the adaptive constant voltage power supply of the embodiment of the utility model, it includes at least two power supply modules, a sampling and comparison module, a main control module and a power switching module. The input end of the sampling and comparison module is electrically connected to the LED light strip to sample the electrical signal of the LED light strip and obtain a comparison signal. The output end of the sampling and comparison module is electrically connected to the main control module to feed back the comparison signal to the main control module. The main control module determines the working state of the LED light strip according to the comparison signal. The main control module is electrically connected to the power switching module to control the switching state of the power switching module according to the working state of the LED light strip. The switching end of the power switching module is electrically connected to at least two of the power supply modules.
[0005] According to some embodiments of the utility model, the sampling and comparison module includes a comparator U1, a resistor R1, a resistor R2, a resistor R3 and a resistor R4, one end of the resistor R1 and one end of the resistor R2 are respectively electrically connected to the LED light strip, the other end of the resistor R2 is electrically connected to the positive input end of the comparator U1, the other end of the resistor R1 and one end of the resistor R3 are respectively grounded, the other end of the resistor R3 is respectively electrically connected to the negative input end of the comparator U1 and one end of the resistor R4, and the other end of the resistor R4 is respectively electrically connected to the output end of the comparator U1.
[0006] According to some embodiments of the present invention, the power switching module includes a relay K1, the switching contacts of the relay K1 include a grounding contact and at least two power supply contacts electrically connected to at least two of the power supply modules in a one-to-one correspondence, and the relay K1 is electrically connected to the main control module.
[0007] According to some embodiments of the present invention, the power supply module further includes a +12VA module and a +12VB module, and the grounding contact includes a GNDA contact and a GNDB contact.
[0008] According to some embodiments of the utility model, the main control module includes a main control chip U2, a resistor R5, a resistor R6, a capacitor C2 and a transistor Q1, the input end of the main control chip U2 is electrically connected to the output end of the comparator U1 via the series resistor R5, one end of the capacitor C2 is electrically connected to the input end of the main control chip U2, the other end of the capacitor C2 is grounded, the output end of the main control chip U2 is electrically connected to the base of the transistor Q1 via the series resistor R6, the emitter of the transistor Q1 is grounded, and the collector of the transistor Q1 is electrically connected to the relay K1.
[0009] According to some embodiments of the present utility model, the power supply module includes a 12V module, a 24V module and a 48V module.
[0010] The adaptive constant voltage power supply according to the embodiment of the utility model has at least the following beneficial effects: the default initial voltage of the LED light strip is 12V before power is turned on, and the switching end of the power switching module is connected to the 12V power supply module. After power is turned on, the sampling and comparison module samples the electrical signal of the LED light strip. If the working voltage of the LED light strip is 12V, the sampling and comparison module can sample the electrical signal and compare the sampling signal and then feed it back to the main control module. The main control module detects the sampling and comparison signal, indicating that the LED light strip has been working normally, and judges that the LED light strip has a working voltage of 12V, which matches the 12V power supply module. At this time, the power switching module does not act; when the LED light strip does not match the 12V power supply module, the sampling and comparison module cannot sample the electrical signal that can be detected by the main control module, indicating that the LED light strip does not match the 12V power supply module, and the main control module controls the power switching module to switch to another power supply module, and repeats the detection and judgment until it switches to the power supply module that matches the LED light strip.
[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings;
[0013] Figure 1 It is the circuit schematic diagram of the adaptive constant voltage power supply. DETAILED DESCRIPTION
[0014] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0015] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0016] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0017] Reference Figure 1The utility model is an adaptive constant voltage power supply, comprising at least two power supply modules (+12VA module 21 and +12VB module 22), a sampling and comparison module 11, a main control module 10 and a power switching module 12, wherein the input end of the sampling and comparison module 11 is electrically connected to an LED light strip to sample an electrical signal of the LED light strip and obtain a comparison signal, the output end of the sampling and comparison module 11 is electrically connected to the main control module 10 to feed back the comparison signal to the main control module 10, the main control module 10 determines the working state of the LED light strip according to the comparison signal, the main control module 10 is electrically connected to the power switching module 12 to control the switching state of the power switching module 12 according to the working state of the LED light strip, and the switching end of the power switching module 12 is electrically connected to at least two power supply modules. Before the LED light strip is powered on, the default initial voltage is 12V. At this time, the switching end of the power switching module 12 is connected to the 12V power supply module. After power is turned on, the sampling and comparison module 11 samples the electrical signal of the LED light strip. If the working voltage of the LED light strip is 12V, the sampling and comparison module 11 can sample the electrical signal and compare the sampling signal and then feed the comparison signal back to the main control module 10. The main control module 10 detects the comparison signal, indicating that the LED light strip has been working normally, and judges that the LED light strip has a working voltage of 12V, which matches the 12V power supply module. At this time, the power switching module 12 does not act; when the LED light strip does not match the 12V power supply module, the sampling and comparison module 11 cannot sample the electrical signal that can be detected by the main control module 10, indicating that the LED light strip does not match the 12V power supply module. The main control module 10 controls the power switching module 12 to switch to another power supply module, and repeats the detection and judgment until it switches to the power supply module that matches the LED light strip.
[0018] Furthermore, the sampling and comparison module 11 includes a comparator U1, a sampling resistor R1, a resistor R2, a resistor R3 and a resistor R4. One end of the resistor R1 and one end of the resistor R2 are electrically connected to the LED light strip respectively. The sampling resistor R1 is used to sample the electrical signal of the LED light strip. The other end of the resistor R2 is electrically connected to the positive input end of the comparator U1. The other end of the resistor R1 and one end of the resistor R3 are grounded respectively. The other end of the resistor R3 is electrically connected to the negative input end of the comparator U1 and one end of the resistor R4 respectively. The other end of the resistor R4 is electrically connected to the output end of the comparator U1 respectively. The electrical signal sampled by the resistor R1 outputs a comparison signal to the main control module via the comparator U1.
[0019] Furthermore, the power switching module 12 includes a relay K1, the switching contacts of the relay K1 include a ground contact (the ground contact includes a GNDA contact and a GNDB contact) and at least two power supply contacts (+12VA contact, +12VB contact) electrically connected to at least two power supply modules one by one. The relay K1 is electrically connected to the main control module 10. When the +12VA contact is conductively connected to the GNDA contact, the power supply voltage is 12V, and when the +12VA contact is conductively connected to the +12VB contact, the power supply voltage is 24V.
[0020] Furthermore, the main control module 10 includes a main control chip U2, a resistor R5, a resistor R6, a capacitor C2 and a transistor Q1. The input end of the main control chip U2 is electrically connected to the output end of the comparator U1 via the series resistor R5, one end of the capacitor C2 is electrically connected to the input end of the main control chip U2, and the other end of the capacitor C2 is grounded. The output end of the main control chip U2 is electrically connected to the base of the transistor Q1 via the series resistor R6, the emitter of the transistor Q1 is grounded, and the collector of the transistor Q1 is electrically connected to the relay K1. The main control chip U2 controls the on and off of the transistor Q1 according to the comparison signal output by the sampling and comparison module, thereby controlling the switching of the relay K1.
[0021] In some embodiments, the power supply module includes a 12V module, a 24V module and a 48V module, the power supply contacts of the relay K1 include 12V contacts, 24V contacts and 48V contacts, and the main control module 10 controls the action of the power switching module 12, and repeatedly detects and judges until switching to the power supply contacts that match the LED light strip.
[0022] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.
[0023] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An adaptive constant voltage power supply, characterized in that: include: At least two power supply modules, a sampling and comparison module (11), a main control module (10) and a power switching module (12); the input end of the sampling and comparison module (11) is electrically connected to an LED light strip to sample an electrical signal of the LED light strip and obtain a comparison signal; the output end of the sampling and comparison module (11) is electrically connected to the main control module (10) to feed back the comparison signal to the main control module (10); the main control module (10) determines the working state of the LED light strip according to the comparison signal; the main control module (10) is electrically connected to the power switching module (12) to control the switching state of the power switching module (12) according to the working state of the LED light strip; and the switching end of the power switching module (12) is electrically connected to at least two of the power supply modules.
2. The adaptive constant voltage power supply according to claim 1, characterized in that: The sampling and comparison module (11) comprises a comparator U1, a resistor R1, a resistor R2, a resistor R3 and a resistor R4, one end of the resistor R1 and one end of the resistor R2 are respectively electrically connected to the LED light strip, the other end of the resistor R2 is electrically connected to the positive input end of the comparator U1, the other end of the resistor R1 and one end of the resistor R3 are respectively grounded, the other end of the resistor R3 is respectively electrically connected to the negative input end of the comparator U1 and one end of the resistor R4, and the other end of the resistor R4 is respectively electrically connected to the output end of the comparator U1.
3. The adaptive constant voltage power supply according to claim 2, characterized in that: The power switching module (12) comprises a relay K1, the switching contacts of the relay K1 comprise a grounding contact and at least two power supply contacts electrically connected to at least two of the power supply modules in a one-to-one correspondence, and the relay K1 is electrically connected to the main control module (10).
4. The adaptive constant voltage power supply according to claim 3, characterized in that: The power supply module further comprises a +12VA module (21) and a +12VB module (22), and the grounding contact comprises a GNDA contact and a GNDB contact.
5. The adaptive constant voltage power supply according to claim 3, characterized in that: The main control module (10) comprises a main control chip U2, a resistor R5, a resistor R6, a capacitor C2 and a transistor Q1, the input end of the main control chip U2 is electrically connected to the output end of the comparator U1 via the series resistor R5, one end of the capacitor C2 is electrically connected to the input end of the main control chip U2, the other end of the capacitor C2 is grounded, the output end of the main control chip U2 is electrically connected to the base of the transistor Q1 via the series resistor R6, the emitter of the transistor Q1 is grounded, and the collector of the transistor Q1 is electrically connected to the relay K1.
6. The adaptive constant voltage power supply according to claim 1, characterized in that: The power supply modules include a 12V module, a 24V module and a 48V module.