Illumination control lighting circuit and device and street lamp
The light control lighting circuit with hysteresis and delay circuits stabilizes street light operation by filtering false triggers from photoelectric sensors, ensuring consistent lighting.
Patent Information
- Application Number
- CN202420232898.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-30
AI Technical Summary
Photoelectric sensors in street lights are susceptible to environmental influences, leading to unstable lighting due to false triggering at dawn and dusk, and are affected by external light sources, causing flashing lights.
A light control lighting circuit incorporating a hysteresis and delay circuit to stabilize lighting by processing input voltage from photoelectric sensors, using components like comparators, resistors, capacitors, and transistors to control LED modules.
The circuit achieves stable on and off states of street lights by filtering out false triggers, ensuring consistent lighting conditions.
Smart Images
Figure CN222192605U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of electronic equipment control, and in particular to a light control lighting circuit, device and street lamp. Background Art
[0002] With the development of science and technology, photoelectric sensors are used in more and more fields, especially in street light switch control.
[0003] However, photoelectric sensors are generally susceptible to environmental influences. At dawn and dusk, due to insufficient light flux, photoelectric sensors are at the critical point of on and off, which may cause flashing lights. In addition, photoelectric sensors are affected by external light sources and may also falsely trigger on and off lights.
[0004] Therefore, it is necessary to design a circuit that can effectively avoid false triggering of the photoelectric sensor and achieve more stable on and off of the light. Utility Model Content
[0005] In order to solve the above-mentioned problems existing in the prior art, the embodiments of the present application provide a light control lighting circuit, device and street lamp, which can prevent the lighting device from flashing due to being falsely triggered when the external light is at the critical value of the photoelectric sensor and is unstable, thereby helping the lighting device to maintain a more stable lighting state.
[0006] In a first aspect, an embodiment of the present application provides a light control lighting circuit, including:
[0007] Photoelectric sensors, photoelectric sensing control circuits and light emitting diode modules;
[0008] The photoelectric sensor is connected to the photoelectric sensing control circuit;
[0009] The photoelectric sensing control circuit is connected to the light emitting diode module;
[0010] Wherein, the photoelectric sensing control circuit includes a hysteresis circuit and a delay circuit;
[0011] The hysteresis circuit is connected to the photoelectric sensor and the delay circuit;
[0012] The delay circuit is connected to the photoelectric sensor.
[0013] In a possible embodiment, the hysteresis circuit includes:
[0014] a first comparator, a first resistor, a second resistor, and a third resistor;
[0015] in:
[0016] A first end of the first comparator is connected to one end of the first resistor, a second end of the first comparator is connected to one end of the second resistor and one end of a third resistor, and a third end of the first comparator is connected to the other end of the first resistor;
[0017] The other end of the second resistor is connected to one end of the photoelectric sensor;
[0018] The other end of the third resistor is grounded.
[0019] In a possible embodiment, the delay circuit includes:
[0020] a second comparator, a diode, a capacitor, a fourth resistor, a fifth resistor and a sixth resistor;
[0021] in:
[0022] A first end of the second comparator is connected to one end of the fourth resistor, and a second end of the second comparator is respectively connected to one end of the capacitor, one end of the fifth resistor, and one end of the sixth resistor;
[0023] The other end of the capacitor is grounded;
[0024] The other end of the fourth resistor is connected to one end of the diode;
[0025] The other end of the fifth resistor is connected to the other end of the diode;
[0026] The other end of the sixth resistor is grounded.
[0027] In a possible embodiment, the photoelectric sensing control circuit further includes:
[0028] The seventh resistor and transistor;
[0029] in:
[0030] One end of the seventh resistor is connected to the third end of the first comparator, and the other end of the seventh resistor is connected to the base of the transistor;
[0031] The collector of the transistor is connected to one end of the diode, and the emitter of the transistor is grounded.
[0032] In a possible embodiment, the photoelectric sensing control circuit further includes:
[0033] an eighth resistor, a ninth resistor and a field effect transistor;
[0034] in:
[0035] The gate of the field effect tube is connected to one end of the eighth resistor and one end of the ninth resistor respectively, the source of the field effect tube is grounded, and the drain of the field effect tube is connected to one end of the light emitting diode module;
[0036] The other end of the eighth resistor is connected to the third end of the second comparator;
[0037] The other end of the ninth resistor is grounded.
[0038] In a possible embodiment, the field effect transistor is an N-channel depletion-type field effect transistor.
[0039] In a possible embodiment, the other end of the photoelectric sensor is also connected to the first voltage input end.
[0040] In a possible embodiment, the first terminal of the first comparator and the fourth terminal of the second comparator are connected to the second voltage input terminal.
[0041] In a second aspect, an embodiment of the present application provides a light control lighting device, comprising the light control lighting circuit of the first aspect.
[0042] In a third aspect, an embodiment of the present application provides a street lamp, comprising the light control lighting device of the second aspect.
[0043] By implementing the embodiments of the present application, the following beneficial effects are achieved:
[0044] In the embodiment of the present application, after receiving external light information through the photoelectric sensor, the light control lighting circuit inputs the voltage to the photoelectric sensing control circuit, and then further processes the input voltage through the hysteresis circuit and the delay circuit in the photoelectric sensing control circuit. Finally, the light emitting diode module controls the light emitting diode according to the voltage output by the photoelectric sensing control circuit to achieve a stable lighting state. BRIEF DESCRIPTION OF THE DRAWINGS
[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0046] Figure 1 A schematic block diagram of a light control lighting circuit provided in an embodiment of the present application;
[0047] Figure 2 A circuit diagram of a light control lighting circuit provided in an embodiment of the present application. DETAILED DESCRIPTION
[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0049] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally includes steps or modules that are not listed, or optionally includes other steps or modules inherent to these processes, methods, products or devices.
[0050] Reference to "embodiments" herein means that a particular feature, result, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0051] See also Figure 1 , Figure 1 This is a schematic block diagram of a light control lighting circuit provided in an embodiment of the present application. As can be seen from the figure, the light control lighting circuit includes a photoelectric sensor 10, a photoelectric sensing control circuit 20 and a light emitting diode module 30.
[0052] Specifically, the photoelectric sensor 10 is connected to the photoelectric sensing control circuit 20 .
[0053] Specifically, the photoelectric sensing control circuit 20 is connected to the light emitting diode module 30 .
[0054] Further, see Figure 2 , Figure 2 A circuit diagram of a light control lighting circuit provided in an embodiment of the present application. The photoelectric sensing control circuit 20 includes a hysteresis circuit 21 and a delay circuit 22 .
[0055] Specifically, the hysteresis circuit 21 is connected to the photoelectric sensor 10 and the delay circuit 22 .
[0056] Specifically, the delay circuit 22 is connected to the photoelectric sensor 10 .
[0057] Specifically, the photoelectric sensor 10 is Figure 2 LED1 is shown.
[0058] Specifically, the light emitting diode module 30 is Figure 2 The LED module shown.
[0059] Furthermore, the hysteresis circuit 21 includes: a first comparator UA, a first resistor R1, a second resistor R2 and a third resistor R3.
[0060] Specifically, the first end of the first comparator UA is connected to one end of the first resistor R1, the second end of the first comparator UA is connected to one end of the second resistor R2 and one end of the third resistor R3, and the third end of the first comparator UA is connected to the other end of the first resistor R1; the other end of the second resistor R2 is connected to one end of the photoelectric sensor 10; and the other end of the third resistor R3 is grounded.
[0061] Furthermore, the delay circuit 22 includes: a second comparator UB, a diode D1, a capacitor C1, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6.
[0062] Specifically, a first end of the second comparator UB is connected to one end of the fourth resistor R4, and a second end of the second comparator UB is respectively connected to one end of the capacitor C1, one end of the fifth resistor R5 and one end of the sixth resistor R6; the other end of the capacitor C1 is grounded; the other end of the fourth resistor R4 is connected to one end of the diode D1; the other end of the fifth resistor R5 is connected to the other end of the diode D1; and the other end of the sixth resistor R6 is grounded.
[0063] Furthermore, the photoelectric sensing control circuit 20 further includes: a seventh resistor R7 and a transistor Q1.
[0064] Specifically, one end of the seventh resistor R7 is connected to the third end of the first comparator UA, and the other end of the seventh resistor R7 is connected to the base of the transistor Q1; the collector of the transistor Q1 is connected to one end of the diode D1, and the emitter of the transistor Q1 is grounded.
[0065] Furthermore, the photoelectric sensing control circuit 20 further includes: an eighth resistor R8, a ninth resistor R9 and a field effect transistor FET1.
[0066] Specifically, the gate of the field effect transistor FET1 is respectively connected to one end of the eighth resistor R8 and one end of the ninth resistor R9, the source of the field effect transistor FET1 is grounded, and the drain of the field effect transistor FET1 is connected to one end of the LED module; the other end of the eighth resistor R8 is connected to the third end of the second comparator UB; the other end of the ninth resistor R9 is grounded.
[0067] Furthermore, the field effect transistor FET1 is an N-channel depletion type field effect transistor FET1.
[0068] Furthermore, the other end of the photoelectric sensor 10 is also connected to the first voltage input end.
[0069] Optionally, the first voltage input terminal may be Figure 2 The VCC voltage output terminal shown may also be the output terminal of other devices or circuits that can provide voltage.
[0070] Furthermore, a first terminal of the first comparator UA and a fourth terminal of the second comparator UB are connected to the second voltage input terminal.
[0071] Optionally, the second voltage input terminal may be Figure 2 The REF voltage output terminal shown may also be the output terminal of other devices or circuits that can provide voltage, and its voltage value may be 5V.
[0072] Optionally, any one of the first resistor R1 to the ninth resistor R9 may be a fixed resistor, or an adjustable resistor, or a chip resistor, or a series combination of multiple resistors, or a parallel combination of multiple resistors.
[0073] Further, the working principle of the light control lighting circuit is as follows.
[0074] During the day, due to strong light, the photoelectric sensor LED1 starts to work. When the light flux becomes stronger and stronger, the photoelectric sensor LED1 gradually turns on, so that the voltage at the second end of the first comparator UA is raised and gradually approaches the voltage of the first voltage input end VCC.
[0075] When the voltage at the second terminal of the first comparator UA is higher than the voltage at the first terminal of the first comparator UA, the third terminal of the first comparator UA will output a low level.
[0076] Since the base of the transistor Q1 is connected to the third terminal of the first comparator UA through the seventh resistor R7, when the third terminal of the first comparator UA outputs a low level, the base of the transistor Q1 receives the low level voltage and will be cut off.
[0077] Furthermore, the first voltage input terminal VCC will charge the capacitor C1, so that the voltage at the second terminal of the second comparator UB increases accordingly.
[0078] When the voltage at the second terminal of the second comparator UB is higher than the voltage at the fourth terminal of the second comparator UB, the third terminal of the second comparator UB will output a high level.
[0079] Since the gate of the field effect transistor FET1 is connected to the third terminal of the second comparator UB through the eighth resistor R8, when the third terminal of the second comparator UB outputs a high level, the field effect transistor FET1 is turned on, so that the LED module stops working and the light is turned off.
[0080] Furthermore, near night, as the light flux decreases, the voltage at the second terminal of the first comparator UA drops. When the voltage at the second terminal of the first comparator UA is lower than the voltage at the first terminal of the first comparator UA, the third terminal of the first comparator UA will output a high level, causing the transistor Q1 to turn on.
[0081] Furthermore, the voltage at the second end of the second comparator UB will decrease. When the voltage at the second end of the second comparator UB is lower than the voltage at the fourth end of the second comparator UB, the third end of the second comparator UB will output a low level, causing the field effect transistor FET1 to be turned off, so that the LED module starts working and the light is turned on.
[0082] To summarize, in the light control lighting circuit provided in the present application, after receiving external light information through a photoelectric sensor, the light control lighting circuit inputs the voltage to the photoelectric sensing control circuit, and then passes through the hysteresis circuit and the delay circuit in the photoelectric sensing control circuit. The input voltage is further processed by utilizing the characteristics of the hysteresis circuit and the delay circuit, and finally the light emitting diode module controls the light emitting diode according to the voltage output by the photoelectric sensing control circuit to achieve a stable lighting state.
[0083] In a possible implementation, the utility model implementation also provides a light control lighting device, which can include the light control lighting circuit provided in any of the above implementations, and the light control lighting circuit is the same as the light control lighting circuit described in any of the above implementations, and will not be described here. At the same time, the utility model implementation also provides a street lamp, which can include the above light control lighting device.
[0084] It should be noted that, for the sake of simplicity, the embodiments of the aforementioned utility models are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.
[0085] In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0086] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device implementation described above is only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical or other forms.
[0087] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.
[0088] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of a software program module.
[0089] If the integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.
[0090] A person skilled in the art may understand that all or part of the steps in the various methods of the above-mentioned embodiments may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable memory, and the memory may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.
[0091] The above is a detailed introduction to the implementation methods of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above implementation methods is only used to help understand the method and core idea of the present application. At the same time, for general technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A light control lighting circuit, characterized in that: The illumination control lighting circuit comprises: Photoelectric sensors, photoelectric sensing control circuits and light emitting diode modules; The photoelectric sensor is connected to the photoelectric sensing control circuit; The photoelectric sensing control circuit is connected to the light emitting diode module; Wherein, the photoelectric sensing control circuit includes a hysteresis circuit and a delay circuit; The hysteresis circuit is connected to the photoelectric sensor and the delay circuit; The delay circuit is connected to the photoelectric sensor.
2. The illumination control lighting circuit according to claim 1, characterized in that: The hysteresis circuit comprises: a first comparator, a first resistor, a second resistor, and a third resistor; in: A first end of the first comparator is connected to one end of the first resistor, a second end of the first comparator is connected to one end of the second resistor and one end of a third resistor, and a third end of the first comparator is connected to the other end of the first resistor; The other end of the second resistor is connected to one end of the photoelectric sensor; The other end of the third resistor is grounded.
3. The illumination control lighting circuit according to claim 2, characterized in that: The delay circuit comprises: a second comparator, a diode, a capacitor, a fourth resistor, a fifth resistor and a sixth resistor; in: A first end of the second comparator is connected to one end of the fourth resistor, and a second end of the second comparator is respectively connected to one end of the capacitor, one end of the fifth resistor, and one end of the sixth resistor; The other end of the capacitor is grounded; The other end of the fourth resistor is connected to one end of the diode; The other end of the fifth resistor is connected to the other end of the diode; The other end of the sixth resistor is grounded.
4. The illumination control lighting circuit according to claim 3, characterized in that: The photoelectric sensing control circuit also includes: The seventh resistor and transistor; in: One end of the seventh resistor is connected to the third end of the first comparator, and the other end of the seventh resistor is connected to the base of the transistor; The collector of the transistor is connected to one end of the diode, and the emitter of the transistor is grounded.
5. The illumination control lighting circuit according to claim 4, characterized in that: The photoelectric sensing control circuit also includes: an eighth resistor, a ninth resistor and a field effect transistor; in: The gate of the field effect tube is connected to one end of the eighth resistor and one end of the ninth resistor respectively, the source of the field effect tube is grounded, and the drain of the field effect tube is connected to one end of the light emitting diode module; The other end of the eighth resistor is connected to the third end of the second comparator; The other end of the ninth resistor is grounded.
6. The illumination control lighting circuit according to claim 5, characterized in that: The field effect transistor is an N-channel depletion type field effect transistor.
7. The illumination control lighting circuit according to claim 5 or 6, characterized in that: The other end of the photoelectric sensor is also connected to the first voltage input end.
8. The illumination control lighting circuit according to claim 7, characterized in that: The first terminal of the first comparator and the fourth terminal of the second comparator are connected to the second voltage input terminal.
9. A lighting control device, characterized in that: The illumination control lighting device comprises the illumination control lighting circuit according to any one of claims 1-8.
10. A street lamp, characterized in that: The street lamp comprises the illumination control lighting device according to claim 9.