CN219999641U - Signal acquisition circuit and LED lamp - Google Patents
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- CN219999641U CN219999641U CN202321491110.3U CN202321491110U CN219999641U CN 219999641 U CN219999641 U CN 219999641U CN 202321491110 U CN202321491110 U CN 202321491110U CN 219999641 U CN219999641 U CN 219999641U
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Abstract
The utility model provides a signal acquisition circuit and an LED lamp, comprising a rectifier bridge, a first-stage surge protection unit and an electric signal conversion unit, wherein the first-stage surge protection unit comprises a first diode, a first resistor, a first capacitor and a first voltage-stabilizing diode; the cathode of the first diode is connected with the first capacitor and the first resistor, the first capacitor and the first resistor are both connected with the cathode of the first voltage-stabilizing diode, and the anode of the first voltage-stabilizing diode is grounded; the first end of the rectifier bridge is used for being connected with the first output end of the upper computer, the second end of the rectifier bridge is used for being connected with the second output end of the upper computer, the third end of the rectifier bridge is connected with the positive electrode of the first diode and the first end of the electric signal conversion unit, and the fourth end of the rectifier bridge is grounded; the second end of the electric signal conversion unit is used for being connected with the signal input end of the singlechip, and the third end of the electric signal conversion unit is used for being connected with the signal output end of the singlechip. The surge energy can be absorbed, and the circuit protection function is completed.
Description
Technical Field
The utility model relates to the field of LEDs, in particular to a signal acquisition circuit and an LED lamp.
Background
Under the development trend of global low carbon, green and environmental protection, along with the continuous progress of the LED technology, the application field of LED products is gradually expanded, and LED illumination is widely accepted by people. With humanization and refinement of home decoration and improvement of life quality of modern people, indoor illumination and even commercial illumination are no longer required to meet the requirements of single illumination mode and single brightness, so that color temperature and brightness of the LED lamp can be regulated anytime and anywhere and through simple operation. Specifically, the singlechip adjusts the color temperature and the brightness of the LED lamp based on the signals acquired by the signal acquisition circuit.
How to set up a safe and reliable's signal acquisition circuit is very important to realizing the colour temperature and the luminance regulatory function of LED lamps and lanterns.
Disclosure of Invention
The utility model aims to provide a signal acquisition circuit and an LED lamp, so as to at least partially improve the problems.
In order to achieve the above object, the technical scheme adopted by the embodiment of the utility model is as follows:
in a first aspect, an embodiment of the present utility model provides a signal acquisition circuit, where the signal acquisition circuit includes a rectifier bridge, a first-stage surge protection unit, and an electrical signal conversion unit, where the first-stage surge protection unit includes a first diode, a first resistor, a first capacitor, and a first zener diode;
the negative electrode of the first diode is connected with one electrode of the first capacitor and one end of the first resistor, the other electrode of the first capacitor and the other end of the first resistor are both connected with the negative electrode of the first zener diode, and the positive electrode of the first zener diode is grounded;
the first end of the rectifier bridge is used for being connected with the first output end of the upper computer, the second end of the rectifier bridge is used for being connected with the second output end of the upper computer, the third end of the rectifier bridge is connected with the positive electrode of the first diode and the first end of the electric signal conversion unit, and the fourth end of the rectifier bridge is grounded;
the second end of the electric signal conversion unit is used for being connected with the signal input end of the single chip microcomputer, and the third end of the electric signal conversion unit is used for being connected with the signal output end of the single chip microcomputer.
In a second aspect, an embodiment of the present utility model provides an LED lamp, including: the signal acquisition circuit.
Compared with the prior art, the signal acquisition circuit and the LED lamp provided by the embodiment of the utility model comprise a rectifier bridge, a first-stage surge protection unit and an electric signal conversion unit, wherein the first-stage surge protection unit comprises a first diode, a first resistor, a first capacitor and a first voltage-stabilizing diode; the negative electrode of the first diode is connected with one electrode of the first capacitor and one end of the first resistor, the other electrode of the first capacitor and the other end of the first resistor are both connected with the negative electrode of the first voltage-stabilizing diode, and the positive electrode of the first voltage-stabilizing diode is grounded; the first end of the rectifier bridge is used for being connected with the first output end of the upper computer, the second end of the rectifier bridge is used for being connected with the second output end of the upper computer, the third end of the rectifier bridge is connected with the positive electrode of the first diode and the first end of the electric signal conversion unit, and the fourth end of the rectifier bridge is grounded; the second end of the electric signal conversion unit is used for being connected with the signal input end of the singlechip, and the third end of the electric signal conversion unit is used for being connected with the signal output end of the singlechip. The surge energy can be absorbed, and the circuit protection function is completed.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a signal acquisition circuit according to an embodiment of the present utility model;
FIG. 2 is a second schematic diagram of a signal acquisition circuit according to an embodiment of the present utility model;
fig. 3 is a third schematic diagram of a signal acquisition circuit according to an embodiment of the utility model.
In the figure: 101-a first stage surge protection unit; 102-a second-stage surge protection unit; 103-rectifier bridge; 104-an electric signal conversion unit; 104R receive signal conversion unit; 104T-transmit signal conversion unit.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present utility model, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those conventionally put in use in the application, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic diagram of a signal acquisition circuit according to an embodiment of the utility model. As shown in fig. 1, the signal acquisition circuit includes a rectifier bridge 103, a first-stage surge protection unit 101, and an electrical signal conversion unit 104, where the first-stage surge protection unit 101 includes a first diode D1, a first resistor R1, a first capacitor CE1, and a first zener diode ZD1.
The negative pole of first diode D1 is connected to one pole of first electric capacity CE1 and one end of first resistance R1, and the other pole of first electric capacity CE1 and the other end of first resistance R1 all are connected to the negative pole of first zener diode ZD1, and the positive pole of first zener diode ZD1 is grounded.
The first end of the rectifier bridge 103 is used for connecting the first output end of the host computer, the second end of the rectifier bridge 103 is used for connecting the second output end of the host computer, the third end of the rectifier bridge 103 is connected to the positive electrode of the first diode D1 and the first end of the electric signal conversion unit 104, and the fourth end of the rectifier bridge 103 is grounded.
The second end of the electric signal conversion unit 104 is used for being connected with the signal input end of the singlechip, and the third end of the electric signal conversion unit 104 is used for being connected with the signal output end of the singlechip.
It should be appreciated that the first stage surge protection unit 101 may absorb surge energy to perform a circuit protection function. The first capacitor CE1 may be an electrolytic capacitor. The rectifier bridge 103 is also identified as BD1 in the figure.
Referring to fig. 2, fig. 2 is a second schematic diagram of a signal acquisition circuit according to an embodiment of the utility model. In some possible implementations, the signal acquisition circuit further includes a second stage surge protection unit 102, the second stage surge protection unit 102 including a self-restoring fuse F1 and a varistor RT1;
one end of the self-recovery fuse F1 is connected to the first end of the rectifier bridge 103, the other end of the self-recovery fuse F1 is used for being connected with the first output end of the host computer, one end of the piezoresistor RT1 is connected between the self-recovery fuse F1 and the first end of the rectifier bridge 103, and the other end of the piezoresistor RT1 is connected to the second end of the rectifier bridge 103.
It should be appreciated that the second stage surge protection unit 102 is formed using the self-restoring fuse F1 and the varistor RT 1. When the surge voltage is mixed into the signal circuit, if the surge current is larger than a preset current threshold value, the current causes the self-recovery fuse to be fused, and when the current is recovered to be normal, or the surge voltage is larger than the preset voltage threshold value, the resistance of the piezoresistor RT1 is reduced and is equivalent to a wire, and the rectifier bridge 103 is short-circuited, so that the later-stage circuit is protected.
It should be noted that, as shown in fig. 2, the second-stage surge protection unit 102 is disposed at the front end of the first-stage surge protection unit 101 in the circuit, and the second-stage surge protection unit 102 will operate first during the operation of the device.
With continued reference to fig. 1 and 2, in some possible implementations, the electrical signal conversion unit 104 includes a receive signal conversion unit 104R and a transmit signal conversion unit 104T.
The third end of the rectifier bridge 103 is connected to the first end of the received signal conversion unit 104R, the second end of the received signal conversion unit 104R is used as the second end of the electrical signal conversion unit 104 and is used for being connected to a signal input end (RXD) of the single chip microcomputer, the third end of the received signal conversion unit 104R is connected to the first end of the transmitted signal conversion unit 104T, and the second end of the transmitted signal conversion unit 104T is used as the third end of the electrical signal conversion unit 104 and is used for being connected to a signal output end (TXD) of the single chip microcomputer.
With continued reference to fig. 1 and 2, in some possible implementations, the received signal converting unit 104R includes a first transistor Q1, a second transistor Q2, a third diode D3, a sixth resistor R6, and a first optocoupler sensor U1;
a wiring terminal is led out from the connection position of the emitter of the first triode Q1 and the base of the second triode Q2 and is connected to one end of a sixth resistor R6, the other end of the sixth resistor R6 is used as a first end of a received signal conversion unit 104R and is connected to the third end of the rectifier bridge 103, and the other end of the sixth resistor R6 is also connected to the emitter of the second triode Q2; the base electrode of the first triode Q1 is connected with the collector electrode of the second triode Q2, and the emitter electrode of the second triode Q2 is used as the third end of the receiving signal conversion unit 104R and is connected with the first end of the transmitting signal conversion unit 104T;
the collector of the first triode Q1 is connected to the negative electrode of the third diode D3, the positive electrode of the third diode D3 is connected to the first end of the first optocoupler sensor U1, the third end and the fourth end of the first optocoupler sensor U1 are grounded, and the second end of the first optocoupler sensor U1 serves as the second end of the received signal conversion unit 104R and serves as the second end of the electric signal conversion unit 104 and is used for being connected with the signal input end of the singlechip.
Optionally, the received signal conversion unit 104R includes a fifth transistor Q5, a fourth resistor R4, and a fifth resistor R5.
One end of a fourth resistor R4 is connected to the fourth end of the first optocoupler sensor U1, the other end of the fourth resistor R4 is connected to the base electrode of a fifth triode Q5, the collector electrode of the fifth triode Q5 is connected to the second end of the first optocoupler sensor U1, and the emitter electrode of the fifth triode Q5 is grounded.
One end of the fifth resistor R5 is connected between the fourth resistor R4 and the base electrode of the fifth triode Q5, and the other end of the fifth resistor R5 is connected with the emitter electrode of the fifth triode Q5.
Optionally, the first transistor Q1 and the second transistor Q2 are PNP transistors, and the fifth transistor Q5 is an NPN transistor.
With continued reference to fig. 1 and 2, in some possible implementations, the transmit signal conversion unit 104T includes a third MOS transistor Q3, a fourth transistor Q4, a second diode D2, a second optocoupler sensor U2, a second resistor R2, and a third resistor R3;
the drain of the third MOS transistor Q3 is connected to the third terminal of the receiving signal converting unit 104R, i.e. to the emitter of the second transistor Q2, as the first terminal of the transmitting signal converting unit 104T.
The source electrode of the third MOS tube Q3 is grounded, the grid electrode of the third MOS tube Q3 is respectively connected with the emitter electrode of the fourth triode Q4 and one end of the second resistor R2, the collector electrode of the fourth triode Q4 is grounded, the base electrode of the fourth triode Q4 and the other end of the second resistor R2 are both connected with one end of the third resistor R3, and the other end of the third resistor R3 is grounded.
The positive pole of the second diode D2 is connected to the collector of the first triode Q1, the negative pole of the second diode D2 is connected to the first end of the second optocoupler sensor U2, and the second end of the second optocoupler sensor U2 is used as the second end of the transmitting signal converting unit 104T, that is, the third end of the electrical signal converting unit 104, and is used for being connected to the signal output end of the singlechip.
The third end of the second optocoupler sensor U2 is connected between the second resistor R2 and the third resistor R3, and the fourth end of the second optocoupler sensor U2 is grounded.
Optionally, the upper computer is configured to output a first type of electrical signal or a second type of electrical signal, and the voltage stabilizing threshold of the first zener diode ZD1 is greater than the voltage value corresponding to the first type of electrical signal and less than the voltage value corresponding to the second type of electrical signal.
The first type of electrical signal may be a Dali signal, and the second type of electrical signal may be a Push signal.
Optionally, the singlechip can control the LED power supply based on the receiving signal of the RXD end, and the singlechip can also output a signal through the TXD end, so that information is fed back to the upper computer.
Referring to fig. 3, fig. 3 is a third schematic diagram of a signal acquisition circuit according to an embodiment of the utility model. In the dimming power supply of Dali/Push, the Dali/Push signal acquisition circuit shown in fig. 3 has no special lightning surge protection circuit, and only depends on the voltage withstanding values of the MOS transistor and the triode for absorbing surge energy, so that the protection of the circuit is realized. According to the scheme of the utility model, the signal acquisition circuit shown in fig. 1 and 2 is provided with the surge protection unit, so that the circuit is protected by absorbing surge energy.
The embodiment of the utility model also provides an LED lamp, which comprises: the signal acquisition circuit. Of course, the LED power supply system also comprises an upper computer, a singlechip, an LED light-emitting module and the like, wherein the singlechip is used for controlling the LED power supply, and the specific connection relation of the singlechip is as described above.
In summary, the embodiment of the utility model provides a signal acquisition circuit and an LED lamp, including a rectifier bridge, a first-stage surge protection unit, and an electrical signal conversion unit, where the first-stage surge protection unit includes a first diode, a first resistor, a first capacitor, and a first zener diode; the negative electrode of the first diode is connected with one electrode of the first capacitor and one end of the first resistor, the other electrode of the first capacitor and the other end of the first resistor are both connected with the negative electrode of the first voltage-stabilizing diode, and the positive electrode of the first voltage-stabilizing diode is grounded; the first end of the rectifier bridge is used for being connected with the first output end of the upper computer, the second end of the rectifier bridge is used for being connected with the second output end of the upper computer, the third end of the rectifier bridge is connected with the positive electrode of the first diode and the first end of the electric signal conversion unit, and the fourth end of the rectifier bridge is grounded; the second end of the electric signal conversion unit is used for being connected with the signal input end of the singlechip, and the third end of the electric signal conversion unit is used for being connected with the signal output end of the singlechip. The surge energy can be absorbed, and the circuit protection function is completed.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The signal acquisition circuit is characterized by comprising a rectifier bridge, a first-stage surge protection unit and an electric signal conversion unit, wherein the first-stage surge protection unit comprises a first diode, a first resistor, a first capacitor and a first voltage-stabilizing diode;
the negative electrode of the first diode is connected with one electrode of the first capacitor and one end of the first resistor, the other electrode of the first capacitor and the other end of the first resistor are both connected with the negative electrode of the first zener diode, and the positive electrode of the first zener diode is grounded;
the first end of the rectifier bridge is used for being connected with the first output end of the upper computer, the second end of the rectifier bridge is used for being connected with the second output end of the upper computer, the third end of the rectifier bridge is connected with the positive electrode of the first diode and the first end of the electric signal conversion unit, and the fourth end of the rectifier bridge is grounded;
the second end of the electric signal conversion unit is used for being connected with the signal input end of the single chip microcomputer, and the third end of the electric signal conversion unit is used for being connected with the signal output end of the single chip microcomputer.
2. The signal acquisition circuit of claim 1, further comprising a second stage surge protection unit comprising a self-healing fuse and a varistor;
one end of the self-recovery fuse is connected to the first end of the rectifier bridge, the other end of the self-recovery fuse is used for being connected with the first output end of the upper computer, one end of the piezoresistor is connected between the self-recovery fuse and the first end of the rectifier bridge, and the other end of the piezoresistor is connected to the second end of the rectifier bridge.
3. The signal acquisition circuit of claim 1 wherein the electrical signal conversion unit comprises a receive signal conversion unit and a transmit signal conversion unit;
the third end of the rectifier bridge is connected to the first end of the received signal conversion unit, the second end of the received signal conversion unit is used for being connected with the signal input end of the single chip microcomputer, the third end of the received signal conversion unit is connected to the first end of the transmitted signal conversion unit, and the second end of the transmitted signal conversion unit is used for being connected with the signal output end of the single chip microcomputer.
4. The signal acquisition circuit of claim 3 wherein the received signal conversion unit comprises a first triode, a second triode, a third diode, a sixth resistor, and a first optocoupler sensor;
a wiring terminal is led out from the connection position of the emitter of the first triode and the base of the second triode and is connected with one end of the sixth resistor, the other end of the sixth resistor is used as the first end of the received signal conversion unit, and the other end of the sixth resistor is also connected with the emitter of the second triode; the base electrode of the first triode is connected with the collector electrode of the second triode, and the emitter electrode of the second triode is used as a third end of the received signal conversion unit;
the collector of the first triode is connected with the cathode of the third diode, the anode of the third diode is connected with the first end of the first optical coupler sensor, the third end and the fourth end of the first optical coupler sensor are grounded, and the second end of the first optical coupler sensor is used as the second end of the received signal conversion unit.
5. The signal acquisition circuit of claim 4 wherein the received signal conversion unit comprises a fifth transistor, a fourth resistor, and a fifth resistor;
one end of the fourth resistor is connected to the fourth end of the first optocoupler sensor, the other end of the fourth resistor is connected to the base electrode of the fifth triode, the collector electrode of the fifth triode is connected to the second end of the first optocoupler sensor, and the emitter electrode of the fifth triode is grounded;
one end of the fifth resistor is connected between the fourth resistor and the base electrode of the fifth triode, and the other end of the fifth resistor is connected with the emitter electrode of the fifth triode.
6. The signal acquisition circuit of claim 5 wherein the first transistor and the second transistor are PNP transistors and the fifth transistor is an NPN transistor.
7. The signal acquisition circuit of claim 4 wherein the transmit signal conversion unit comprises a third MOS transistor, a fourth transistor, a second diode, a second optocoupler sensor, a second resistor, and a third resistor;
the drain electrode of the third MOS tube is used as the first end of the emission signal conversion unit, the source electrode of the third MOS tube is grounded, the grid electrode of the third MOS tube is respectively connected with the emitter electrode of the fourth triode and one end of the second resistor, the collector electrode of the fourth triode is grounded, the base electrode of the fourth triode and the other end of the second resistor are both connected with one end of the third resistor, and the other end of the third resistor is grounded;
the positive pole of the second diode is connected with the collector electrode of the first triode, the negative pole of the second diode is connected with the first end of the second optical coupler sensor, the second end of the second optical coupler sensor is used as the second end of the emission signal conversion unit, the third end of the second optical coupler sensor is connected between the second resistor and the third resistor, and the fourth end of the second optical coupler sensor is grounded.
8. The signal acquisition circuit of claim 1, wherein the upper computer is configured to output a first type of electrical signal or a second type of electrical signal, and the voltage stabilizing threshold of the first zener diode is greater than a voltage value corresponding to the first type of electrical signal and less than a voltage value corresponding to the second type of electrical signal.
9. An LED light fixture, comprising: the signal acquisition circuit of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321491110.3U CN219999641U (en) | 2023-06-12 | 2023-06-12 | Signal acquisition circuit and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321491110.3U CN219999641U (en) | 2023-06-12 | 2023-06-12 | Signal acquisition circuit and LED lamp |
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| Publication Number | Publication Date |
|---|---|
| CN219999641U true CN219999641U (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321491110.3U Active CN219999641U (en) | 2023-06-12 | 2023-06-12 | Signal acquisition circuit and LED lamp |
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| CN (1) | CN219999641U (en) |
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- 2023-06-12 CN CN202321491110.3U patent/CN219999641U/en active Active
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