CN216820155U

CN216820155U - Lamp bead unit detection circuit, controller, light module and device

Info

Publication number: CN216820155U
Application number: CN202220577961.9U
Authority: CN
Inventors: 陈冠波
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-06-24
Anticipated expiration: 2032-03-16

Abstract

The utility model discloses a lamp bead unit detection circuit, a controller, a light module and a device, wherein the lamp bead unit detection circuit comprises: the lamp string comprises a plurality of lamp bead units which are connected in sequence; the transient sampling circuit is connected with the output circuit and is used for sampling the electrical parameter transient of the lamp string and outputting a transient signal; the main control circuit is connected with the output circuit and the transient sampling circuit and used for sending light control signals through the output circuit to enable the lamp bead units to generate color transient and determining the number of the lamp bead units of the lamp string according to the transient signals output by the transient sampling circuit. Therefore, the number of the lamp string lamp bead units can be simply and directly determined according to the transient signal, the detection process of the number of the lamp bead units is simplified, and the detection accuracy is improved.

Description

Lamp bead unit detection circuit, controller, light module and device

Technical Field

The utility model relates to the technical field of light, in particular to a lamp bead unit detection circuit, a controller, a light module and a device.

Background

With the improvement of living standard and design and manufacture level of people, more and more light products are developed and applied, wherein light string lighting products, such as LED light strips, LED light strings and the like, having a plurality of lamp bead units connected in sequence are more and more favored by the market.

In practical application, the quantity of the lamp bead units of the lamp string is different due to different installation situations after the lamp string is installed, and in order to consider the light-emitting effect of the lamp string controlled by the light controller, the quantity of the lamp beads of the connected lamp string needs to be acquired, so that the light effect is more flexible and richer.

In the prior art, the method for detecting the number of the lamp bead units of the lamp string generally has a manual mode and an automatic mode, wherein the manual mode is to acquire the number of the lamp beads by manually counting the number of the lamp beads or measuring the length of the lamp string, the operation process is complicated, and the user experience is not ideal; the automatic mode is to automatically detect the number of lamp string lamp bead units through an intelligent controller, and usually analog-to-digital conversion sampling and digital signal processing such as filtering and multiple numerical value comparison are required to be performed on related analog signals of lamp string work.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that aiming at the defects in the prior art, the utility model provides the lamp bead unit detection circuit, the controller, the light module and the device so as to simplify the detection process of the number of the lamp bead units and improve the detection accuracy.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the first aspect provides a lamp pearl unit detection circuitry, lamp pearl unit detection circuitry includes:

the lamp string comprises a plurality of lamp bead units which are connected in sequence;

the transient sampling circuit is connected with the output circuit and is used for sampling the electrical parameter transient of the lamp string and outputting a transient signal;

the main control circuit is connected with the output circuit and the transient sampling circuit and used for sending light control signals through the output circuit to enable the lamp bead units to generate color transient and determining the number of the lamp bead units of the lamp string according to the transient signals output by the transient sampling circuit.

Optionally, the transient sampling circuit comprises:

the signal sampling circuit is connected with the output circuit and is used for sampling and preprocessing the electrical parameters of the lamp string work and outputting electrical parameter signals;

the transient conversion circuit is connected with the signal sampling circuit and is used for removing a direct current component of the electrical parameter signal and converting the electrical parameter signal into a first transient signal;

and the transient processing circuit is connected with the transient conversion circuit and is used for further processing the first transient signal and outputting a second transient signal to the main control circuit.

Optionally, the transient conversion circuit comprises a first capacitor arranged in series between the signal sampling circuit and the transient processing circuit.

Optionally, the electrical parameter transient is a current transient;

the signal sampling circuit comprises a current sampling resistor and a first amplifier, the current sampling resistor is serially arranged on a ground wire of the output circuit, a first end of the current sampling resistor is grounded, and the first amplifier is connected with a second end of the current sampling resistor to sample and amplify current transient of the lamp string;

the transient processing circuit comprises a second resistor and a second amplifier, wherein the first end of the second resistor is connected with the transient conversion circuit, the second end of the second resistor is grounded, the first input end of the second amplifier is connected with the first end of the second resistor, and the output end of the second amplifier is connected with the main control circuit.

Optionally, the transient processing circuit further includes a filter circuit, and the filter circuit is serially disposed between the second amplifier and the main control circuit, and is configured to filter the second transient signal.

Optionally, the transient signal output by the transient sampling circuit is a pulse signal;

the main control circuit comprises a counting unit, the counting unit is used for counting the pulse signals to obtain a counting value, and the main control circuit is specifically used for determining the number of the lamp bead units of the lamp string based on the counting value.

Optionally, the main control circuit is further connected to a signal sampling circuit, and the main control circuit is further configured to detect the electrical parameter signal output by the signal sampling circuit to determine whether the light string is connected to the output circuit or in an energized operating state.

In a second aspect, the utility model provides a light controller, which includes the lamp bead unit detection circuit as described in any one of the above items.

In a third aspect, the utility model provides a light module, which comprises the light controller and a light string, wherein the light string is in communication connection with the light controller, and comprises a plurality of sequentially connected lamp bead units.

In a fourth aspect, the utility model provides a detection device, which includes the light controller as described above and a housing, wherein part or all of the light controller is disposed in the housing.

By adopting the technical scheme, the utility model at least has the following beneficial effects:

the utility model controls the lamp bead units of the lamp string connected to the output circuit to generate color transient by the light control signal sent by the main control circuit, thereby enabling the current electric parameters of the lamp string passing through the output circuit to generate transient, the electric parameter transient of the lamp string can directly output transient signals convenient for the main control circuit to detect through the sampling and processing of the transient sampling circuit without indirectly depending on analog-digital conversion sampling and related processing processes of analog signals, the main control circuit can simply and directly determine the number of the lamp bead units of the lamp string according to the transient signals corresponding to the color transient of the current lamp bead units output by the transient sampling circuit, thereby simplifying the detection process of the number of the lamp beads, and avoiding the influence of power supply ripple or circuit noise, analog-digital conversion sampling errors and initial color states of the lamp string on the detection of the number of the lamp bead units, the accuracy of lamp pearl quantity detection has been improved.

It is to be understood that the advantageous effects of the second aspect to the fourth aspect compared to the related art are the same as the advantageous effects of the first aspect compared to the related art, and reference may be made to the related description of the first aspect, which is not repeated herein.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of a functional module of a lamp bead unit detection circuit according to the present invention;

FIG. 2 is a schematic circuit diagram of a lamp bead unit detection circuit according to an embodiment of the present invention;

the reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Master control circuit	R1	Current sampling resistor
20	Transient sampling circuit	R2	Second resistance
				201	Signal sampling circuit	U1	A first amplifier
202	Transient conversion circuit	U2	A second amplifier
				203	Transient processing circuit	U3	Master control chip
2031	Filter circuit	C1	First capacitor
				30	Output circuit	P1	Output terminal
40	Lamp string	401	Lamp bead unit

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

With the improvement of living standard and design and manufacture standard of people, more and more light products are developed and applied, wherein light string illumination products with a plurality of sequentially connected lamp bead units, such as LED light strips, LED light strings and the like, are more and more favored by the market. The lamp string also comprises a nonlinear light-emitting component formed by sequentially cascading and connecting the lamp bead units, for example, some LED light-emitting panels or LED light-emitting balls can also form a plane or curved lighting product by a plurality of sequentially connected lamp bead units according to a specific spatial arrangement mode.

In the prior art, methods for detecting the number of lamp bead units of a lamp string generally include a manual mode and an automatic mode, wherein the manual mode is to acquire the number of lamp beads by manually counting the number of lamp beads or measuring the length of the lamp string, the operation process is complicated, and the user experience is not ideal; the automatic method is to automatically detect the number of lamp string lamp bead units through an intelligent controller, and usually analog-to-digital conversion sampling and digital signal processing such as filtering and multiple numerical value comparison are required to be performed on related analog signals of lamp string work.

In view of this, the present invention provides a lamp bead unit detection circuit.

Referring to fig. 1 and 2, in an embodiment of the present invention, the lamp bead unit detection circuit includes:

the lamp string 40 comprises a lamp string unit 401, an output circuit 30 and a control circuit, wherein the lamp string unit 40 is connected with the output circuit 30 and comprises a plurality of lamp bead units 401 which are connected in sequence;

the transient sampling circuit 20 is connected with the output circuit 30 and is used for sampling the electrical parameter transient of the lamp string 40 and outputting a transient signal;

the main control circuit 10 is connected to the output circuit 30 and the transient sampling circuit 20, and the main control circuit 10 is configured to send a light control signal through the output circuit 30 to enable the lamp bead units 401 to generate color transients, and determine the number of the lamp bead units 401 of the light string 40 according to the transient signal output by the transient sampling circuit 20.

It should be noted that the light string 40 includes a plurality of lamp bead units 401 connected in sequence, which means that the plurality of lamp bead units 401 are in a sequential connection relationship on the physical connection on the light string 40, and based on the physical connection between the lamp bead units 40, the light string 40 is provided with electrical connecting wires including power lines and communication lines, the communication lines may be communication buses such as single-wire/double-wire/differential/power line carrier, or communication connection manners in which signal control lines of the lamp bead units are cascaded with each other, and in the circuit structure, the lamp bead units 401 may be in a parallel relationship, a series relationship, or a mixed manner of series and parallel, as long as access control can be performed by forming a communication line through the electrical connection and the lamp bead units have a common power supply line, and are not limited herein.

Referring to fig. 2, the lamp bead units 401 include lamp bead driving chips and lamp beads, the lamp bead driving chips are configured to receive the light control signals sent by the main control circuit 10 to drive the lamp beads to generate color transient, the number of the lamp bead units 401 may be the number of a single lamp bead unit 401, or the number of lamp bead groups formed by combining a plurality of lamp bead units 401, which is determined by a specific application form, for example, the lamp string 40 is an LED lamp strip, the LED lamp strip is provided with a plurality of lamp bead units 401 connected in sequence, the lamp bead units 401 include LED lamp bead driving chips and lamp beads, the lamp bead units 401 formed by a single LED lamp bead driving chip and the LED lamp beads driven by the single LED lamp bead driving chip drive the lamp bead unit 401 to drive a plurality of LED lamp beads of the lamp bead units 401 to generate color transient, in addition, the lamp bead units 401 may also be set as lamp bead units 401 formed by LED lamp beads generating the same transient.

It should be noted that the electrical parameter transient of the light string 40 may be current, voltage, power, ripple of voltage or current, phase of voltage or current, etc. of the light string 40, and the relevant electrical parameter transient caused by the color transient of the lamp bead unit 401 may be any, and is not limited herein.

Specifically, the output circuit 30 at least includes an output terminal P1, a power supply line and a light control signal line, and the light string 40 obtains a working power supply through the power supply line and communicates with the main control circuit 10 through the light control signal line. It should be noted that the transient sampling circuit 20 may be connected to one or more of the output terminal P1, the power supply line, and the light control signal line to sample electrical parameter transients of the string of lights 40; the transient sampling circuit 20 is connected to the output circuit 30, and is not limited to the sampling position where the transient sampling circuit 20 samples the transient of the electrical parameter of the string light 40, and may sample the transient of the electrical parameter of the string light 40.

The main control circuit 10 is used for sending a light control signal to control the lamp bead units 401 of the lamp strings 40 connected to the output circuit 30 to generate color transient, so that the electrical parameters of the lamp strings 40 passing through the output circuit 30 at present generate transient, the electrical parameter transient of the lamp strings 40 can directly output transient signals convenient for the main control circuit 10 to detect through sampling and processing of the transient sampling circuit 20 without indirectly relying on analog-to-digital conversion sampling and related processing processes of analog signals, the main control circuit 10 can simply and directly determine the number of the lamp bead units 401 of the lamp strings 40 according to the transient signals corresponding to the color transient of the current lamp bead units 401 output by the transient sampling circuit 20, thereby simplifying the detection process of the number of the lamp beads, and avoiding the influence of power supply ripple or circuit noise, analog-to-digital conversion sampling errors and the initial color state of the lamp strings 40 on the detection of the number of the lamp bead units 401, the accuracy of lamp pearl quantity detection has been improved.

In this embodiment, referring to fig. 1 and fig. 2, the transient sampling circuit 20 includes:

the signal sampling circuit 201 is connected with the output circuit 30 and is used for sampling and preprocessing the working electrical parameters of the lamp string 40 and outputting electrical parameter signals; a transient conversion circuit 202, connected to the signal sampling circuit 201, for removing a dc component of the electrical parameter signal and converting the electrical parameter signal into a first transient signal; a transient processing circuit 203 connected to the transient converting circuit 202 for further processing the first transient signal and outputting a second transient signal to the main control circuit 10.

It should be noted that the signal sampling circuit 201 may be used to sample the operating current of the string light 40, or may be used to sample the voltage, which is determined by the above-mentioned electrical parameters. The pre-processing includes amplifying the sampled signal.

Specifically, the main control circuit 10 includes a main control chip U3, the main control chip U3 is a single chip microcomputer of a model PIC16F1828, a 10 th pin RB7 of the PIC16F1828 outputs a light control signal to enable the lamp bead unit 401 to generate color transient, a 16 th pin RC0 receives the second transient signal, the transient sampling circuit 20 converts the sampled electrical parameter transient of the lamp string 40 into a TTL level or a cmos level signal recognizable to an IO peripheral pin RC0 of the PIC16F1828, and ADC (analog-to-digital conversion) is not required to be used for participation, so that the performance requirement on the detection circuit is reduced, and the number detection process of the lamp bead units 401 is simplified;

referring to fig. 2, specifically, the transient conversion circuit 202 includes a first capacitor C1, and the first capacitor C1 is serially disposed between the signal sampling circuit 201 and the transient processing circuit 203. The transient signal in the electrical parameter signal is coupled and converted into the first transient signal through the isolation of the first capacitor C1 on the direct current component in the electrical parameter signal and the gating on the alternating current component, and the element and circuit structure is simple. Through the transient conversion circuit 202, the color transient generated by the lamp bead unit 401 can be directly and correspondingly converted into an electric transient signal without a direct current component, so that the response and extraction of the transient signal cannot be influenced by the initial brightness and color state of the lamp string 40 and the corresponding magnitude of the direct current working current, the transient of the electric parameter signal is obtained in a mode of no analog-to-digital conversion and numerical comparison operation, and the process of detecting the number of the lamp bead units 401 is simplified.

In particular, the electrical parameter transient is a current transient;

the signal sampling circuit 201 comprises a current sampling resistor R1 and a first amplifier U1, the current sampling resistor R1 is serially connected to the ground line of the output circuit 30, the first end of the current sampling resistor R1 is grounded, and the second ends of the first amplifier U1 and the current sampling resistor R1 are connected to sample and amplify the current transient of the string of lights 40; preferably, the resistance value of the current sampling resistor R1 is a resistance of milliohm level, such as a current sampling resistor R1 of 20 milliohm, so as to reduce the line impedance and the power loss; the first amplifier U1 may form an operational amplification circuit to amplify the current transient.

The transient processing circuit 203 comprises a second resistor R2 and a second amplifier U2, a first end of the second resistor R2 is connected to the transient conversion circuit 202, a second end of the second resistor R2 is connected to ground, a first input end of the second amplifier U2 is connected to a first end of the second resistor R2, and an output end of the second amplifier U2 is connected to the main control circuit 10. The second resistor R2 is used to provide a settable input impedance for the transient processing circuit 203, improving the stability of the first transient signal reception. Preferably, the second amplifier U2 is used for amplifying the received first transient signal into a second transient signal, so that the main control circuit 10 can simply and directly acquire the transient state corresponding to the color of the lamp bead unit 401.

Further, the transient processing circuit 203 further includes a filter circuit 2031, and the filter circuit 2031 is disposed in series between the second amplifier U2 and the main control circuit 10 for filtering the second transient signal. The filtering circuit 2031 may be an RC low-pass filtering circuit 2031, an LC filtering circuit 2031, or another passive or active filtering circuit 2031, as long as it can filter the non-significant transient signal in the second transient signal, which is not limited herein. Preferably, the filter circuit 2031 is an RC low-pass filter circuit 2031, which is simple and low in cost.

In one embodiment, referring to fig. 2, the transient signal output by the transient sampling circuit 20 is a pulse signal; the main control circuit 10 includes a counting unit, the counting unit is configured to count the pulse signals to obtain a count value, and the main control circuit 10 is specifically configured to determine the number of the lamp bead units 401 of the lamp string 40 based on the count value.

Specifically, the main control circuit 10 may be configured to sequentially access and control each lamp bead unit 401 of the lamp string 40 by sending a light signal, so that each lamp bead unit 401 of the lamp string 40 sequentially generates a color transient from near to far from the output circuit 30, or sequentially generates one or more color transients from far to near from the output circuit 30, each color transient is correspondingly output with a transient signal each time through the transient sampling circuit 20, the transient sampling circuit 20 performs a shaping process on the transient signal, and a specific output is a pulse signal, so that the main control circuit 10 can read or detect the color transient signal, in another embodiment, the transient sampling circuit 20 may be configured with a comparator to compare the transient signal with a reference signal to obtain a corresponding pulse signal. Due to the arrangement of the transient sampling circuit 20, the main control circuit 10 does not need to initialize the color of the lamp bead units 401 of the lamp string 40 before detection, that is, the operating current of the lamp string 40, but only needs to count the pulse signals directly and conveniently through the counting unit, and determines the number of the lamp bead units 401 of the lamp string 40 according to the count value, or determines the number of the lamp bead units 401 of the lamp string 40 based on the count value and the corresponding serial number of the lamp bead units 401. The detection circuit of the lamp bead units 401 does not affect the accuracy of obtaining the number of the lamp bead units 401 due to ripple noise of electric parameters of the operation of the lamp string 40, ADC sampling errors and the initial color state of the lamp string 40, and meanwhile, the detection process of the number of the lamp bead units 401 is simplified.

In one embodiment, the main control circuit 10 is further connected to the signal sampling circuit 201, and the main control circuit 10 is further configured to detect the electrical parameter signal output by the signal sampling circuit 201 to determine whether the light string 40 is connected to the output circuit 30 or in a power-on working state. For example, when the output circuit 30 is connected to the light string 40, the signal sampling circuit 201 outputs an electrical parameter signal with a certain voltage value, and the main control circuit 10 can be used for judging whether the light string 40 is connected to the output circuit 30 or in a working state according to the voltage value of the electrical parameter signal, so as to facilitate the detection of the number of the light bead units 401.

The utility model further provides a light controller which comprises the lamp bead unit detection circuit. In one embodiment, the light controller is further provided with a power circuit for supplying power to the lamp bead unit detection circuit and the lamp string.

The detailed structure of the lamp bead unit detection circuit can refer to the above embodiment, and is not described herein again; it can be understood that, because the lamp bulb unit detection circuit is used in the lamp light controller of the present invention, the embodiment of the lamp light controller of the present invention includes all technical solutions of all embodiments of the lamp bulb unit detection circuit, and the achieved technical effects are also completely the same, and are not described herein again.

The utility model further provides a light module, which comprises the light controller and the light string, wherein the light string is in communication connection with the light controller, and comprises a plurality of lamp bead units which are sequentially connected.

It should be noted that the light string may be a flexible LED strip, a hard material LED strip, or a strip light string, which is not limited herein. In addition, the lamp string can be in communication connection with the light controller in a wireless communication mode so as to adapt to the use requirements of different scenes.

The detailed structure of the light module can refer to the above embodiments, and is not described herein again; it can be understood that, because the light controller is used in the light module of the present invention, the embodiment of the light module of the present invention includes all technical solutions of all embodiments of the light controller, and the achieved technical effects are also completely the same, and are not described herein again.

The utility model further provides a detection device which comprises the light controller and the shell, wherein the light controller is partially or completely arranged in the shell.

The detailed structure of the detection device can refer to the above embodiments, and is not described herein again; it can be understood that, because the light controller is used in the detection apparatus of the present invention, the embodiment of the detection apparatus of the present invention includes all technical solutions of all embodiments of the light controller, and the achieved technical effects are also completely the same, and are not described herein again.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a lamp pearl unit detection circuitry, its characterized in that, lamp pearl unit detection circuitry includes:

the master control circuit is used for sending light control signals through the output circuit so that the lamp bead units generate color transient, and determining the number of the lamp bead units of the lamp string according to the transient signals output by the transient sampling circuit.

2. The lamp bead unit detection circuit of claim 1, wherein the transient sampling circuit comprises:

3. The lamp bead unit detection circuit of claim 2,

the transient conversion circuit includes a first capacitor disposed in series between the signal sampling circuit and the transient processing circuit.

4. The lamp bead unit detection circuit of claim 3,

the electrical parameter transient is a current transient;

the transient processing circuit comprises a second resistor and a second amplifier, wherein a first end of the second resistor is connected with the transient conversion circuit, a second end of the second resistor is grounded, a first input end of the second amplifier is connected with a first end of the second resistor, and an output end of the second amplifier is connected with the main control circuit.

5. The lamp bead unit detection circuit of claim 4,

the transient processing circuit further comprises a filter circuit, and the filter circuit is arranged between the second amplifier and the main control circuit in series and is used for filtering the second transient signal.

6. The lamp bead unit detection circuit of claim 1,

the transient signal output by the transient sampling circuit is a pulse signal;

7. The lamp bead unit detection circuit of any one of claims 1 to 6,

the main control circuit is further connected with the signal sampling circuit and used for detecting the electrical parameter signals output by the signal sampling circuit so as to judge whether the lamp string is connected to the output circuit or in a power-on working state.

8. A light controller, characterized in that the light controller comprises the lamp bead unit detection circuit according to any one of claims 1 to 7.

9. A light module, characterized by, include light controller and lamp cluster as claimed in claim 8, the lamp cluster with light controller communication connection, the lamp cluster includes a plurality of lamp pearl units that connect gradually.

10. A detection device comprising a light controller according to claim 8 and a housing, the light controller being partially or wholly disposed in the housing.