Lamp strip control circuit and curtain assembly

Abstract

The utility model provides a lamp strip control circuit and a curtain assembly, and relates to the technical field of curtains. The lamp strip control circuit and curtain assembly comprises a control module, a driving circuit and a wiring terminal, wherein the control module is provided with a first control end, a second control end and a detection end; the driving circuit comprises a bridge chip, two input control ends of the bridge chip are correspondingly connected with the first control end and the second control end respectively, and a grounding end of the bridge chip is connected with the detection end; a first power supply input end of the bridge chip is used for connecting an external power supply; the first side of the wiring terminal is used for being connected with the power end of the lamp strip. The second side of the wiring terminal is electrically connected with the first power supply output end of the bridge chip; wherein the first control end is used for outputting an enable signal to the corresponding input control end, so that the bridge chip outputs forward current; and the second control end is used for outputting an enable signal to the corresponding input control end, so that the bridge chip outputs a reverse current. According to the embodiment of the invention, the installation convenience of the lamp strip can be improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to, but is not limited to, the technical field of curtains, and particularly relates to a lamp strip control circuit and a curtain assembly. BACKGROUND

[0002] With the increasing demand for life quality, the functions provided on the curtain are more and more, such as adding a lamp strip and other curtain assemblies on the track of the curtain. However, when the lamp strip is added on the curtain, the power supply is often installed at one end of the track, and the positive and negative poles of the power supply on the lamp strip are often small, which is easy to be installed incorrectly, thereby causing reinstallation and poor installation convenience. Therefore, the embodiment of the present application needs a lamp strip control circuit to reduce the probability of lamp strip reinstallation and improve the installation convenience. CONTENT OF THE UTILITY MODEL

[0003] The following is a summary of the subject matter described in detail in this document. This summary is not intended to limit the scope of protection of the claims. The embodiment of the present application provides a lamp strip control circuit and a curtain assembly, which can improve the installation convenience of the curtain assembly.

[0004] In a first aspect, the lamp strip control circuit provided by the embodiment of the present application comprises:

[0005] A control module, the control module is provided with a first control end, a second control end and a detection end;

[0006] A driving circuit, the driving circuit comprises a bridge chip, two input control ends of the bridge chip are respectively connected with the first control end and the second control end in correspondence, and a ground end of the bridge chip is connected with the detection end; a first power input end of the bridge chip is used for connecting an external power supply;

[0007] A wiring terminal, a first side of the wiring terminal is used for connecting with a power supply end of the lamp strip; a second side of the wiring terminal is electrically connected with a first power output end of the bridge chip;

[0008] The first control end is used for outputting an enable signal to the corresponding input control end, so that the bridge chip outputs a forward current; the second control end is used for outputting an enable signal to the corresponding input control end, so that the bridge chip outputs a reverse current.

[0009] Therefore, the above-mentioned embodiments of the present application have at least the following beneficial effects: the control module sends an enable signal to the bridge chip based on the first control terminal or the second control terminal, and then determines whether there is current flowing through the loop formed by the wiring terminal and the lamp strip through the detection terminal. When there is no current, the control terminal for sending the enable signal can be changed by the control module, so that the current direction flowing through the lamp strip can be changed by the bridge chip. In this way, the current direction can be changed by the control module even if the installation direction of the lamp strip is incorrect. Compared with related technologies, the probability of lamp strip reinstallation is lower, so that the installation convenience of the curtain assembly can be improved.

[0010] According to some embodiments of the first aspect of the present application, the driving circuit further comprises a diode, the first power output terminal of the bridge chip is provided with two positive output terminals and two negative output terminals, the two positive output terminals are respectively arranged in one-to-one correspondence with the first control terminal and the second control terminal, the two negative output terminals are respectively arranged in one-to-one correspondence with the first control terminal and the second control terminal, the two positive output terminals are connected in parallel and connected to the first end of the diode, the two negative output terminals are connected in parallel and connected to the second end of the diode, and the two ends of the diode are connected to the second side of the wiring terminal.

[0011] According to some embodiments of the first aspect of the present application, the driving circuit further comprises a pressure-sensitive resistor, the pressure-sensitive resistor is arranged in parallel with the diode, the first end of the pressure-sensitive resistor is connected between the parallel connection of the first end of the diode and the two positive output terminals, and the second end of the pressure-sensitive resistor is connected between the parallel connection of the second end of the diode and the two negative output terminals.

[0012] According to some embodiments of the first aspect of the present application, the driving circuit further comprises a first resistor, a first capacitor and a plurality of second resistors, the plurality of second resistors are connected in parallel, and the first ends of the plurality of second resistors connected in parallel are connected to the ground terminal of the bridge chip, the first end of the first resistor is connected to the first ends of the plurality of second resistors connected in parallel, the second end of the first resistor is connected to the first end of the first capacitor and the detection terminal, and the second ends of the first capacitor and the plurality of second resistors are grounded.

[0013] According to some embodiments of the first aspect of the present application, the driving circuit further comprises a plurality of second capacitors, the first ends of the plurality of second capacitors are connected between the external power supply and the first power input terminal of the bridge chip, and the second ends of the second capacitors are grounded.

[0014] According to some embodiments of the first aspect of the present application, the bridge chip is a motor driving chip.

[0015] According to some embodiments of the first aspect of the present application, the control module comprises a control chip and a reset circuit, the control chip is provided with a reset end, a second power input end, a first control end, a second control end and a detection end; the reset end is connected with the output end of the reset circuit, and the second power input end is used for connecting an external power supply.

[0016] According to some embodiments of the first aspect of the present application, the reset circuit comprises a third resistor, a fourth resistor and a third capacitor, the third resistor and the third capacitor are connected in series, the first end of the third resistor away from the third capacitor is connected with an external power supply, the first end of the fourth capacitor away from the third resistor is grounded, and the first end of the fourth resistor is connected between the third resistor and the third capacitor, and the second end of the fourth resistor is connected with the reset end.

[0017] In the second aspect, the window curtain assembly according to the embodiments of the present application comprises the lamp strip control circuit according to any one of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not constitute a limitation to the technical solutions of the present application.

[0019] Figure 1 is a module schematic diagram of one embodiment of the lamp strip control circuit provided by the present application;

[0020] Figure 2 is a circuit schematic diagram of a driving circuit in one embodiment of the lamp strip control circuit provided by the present application;

[0021] Figure 3 is a circuit schematic diagram of a control module in one embodiment of the lamp strip control circuit provided by the present application.

[0022] Reference Signs:

[0023] a control module 100,

[0024] a driving circuit 200,

[0025] a wiring terminal 300,

[0026] a lamp strip 400. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and do not limit the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of terms such as "first", "second", "third", "fourth", etc. (if any) are used merely to describe a distinction between two or more objects, and is not meant to be a description of a particular order or sequence.

[0029] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the technology can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

[0030] Reference Figure 1 As shown in the first aspect, the lamp strip 400 control circuit according to the embodiments of the present application comprises:

[0031] The control module 100 is provided with a first control end, a second control end and a detection end;

[0032] The driving circuit 200 comprises a bridge chip, two input control ends of the bridge chip are respectively connected with the first control end and the second control end, a ground end of the bridge chip is connected with the detection end, and a first power input end of the bridge chip is used for connecting an external power supply;

[0033] The wiring terminal 300 is used for connecting with a power end of the lamp strip 400 at a first side of the wiring terminal 300, and a second side of the wiring terminal 300 is electrically connected with a first power output end of the bridge chip;

[0034] The first control end is used for outputting an enable signal to the corresponding input control end, so that the bridge chip outputs a forward current, and the second control end is used for outputting an enable signal to the corresponding input control end, so that the bridge chip outputs a reverse current.

[0035] Therefore, the control module 100 sends an enable signal to the bridge chip based on the first control terminal or the second control terminal, and then determines whether there is current flowing through the loop formed by the wiring terminal 300 and the lamp strip 400 through the detection terminal. When there is no current, the control module 100 can change the control terminal from which the enable signal is sent, so that the bridge chip can change the direction of the current flowing through the lamp strip 400. In this way, the control module 100 can change the direction of the current even if the lamp strip 400 is installed in the wrong direction. Compared with related technologies, the probability of reinstallation of the lamp strip 400 in the embodiment of the application is lower, thereby improving the installation convenience of the curtain assembly.

[0036] Only one of the first control terminal and the second control terminal outputs the enable signal at the same time. The control module 100 is provided with a memory function, which can maintain the output of the enable signal of the control terminal after determining the control terminal when the detection terminal of the bridge chip detects the current. For example, after the first control terminal outputs the enable signal, the ground terminal of the bridge chip has current (i.e., the detection terminal does not detect the current), and the first control terminal of the control module 100 continues to output the enable signal. For another example, after the first control terminal outputs the enable signal, the ground terminal of the bridge chip has no current, the second control terminal of the control module 100 outputs the enable signal, and the first control terminal stops outputting the enable signal. At this time, if the detection terminal of the control module 100 detects the current, the second control terminal continues to output the enable signal. The order of the control terminal enabled by the control module 100 after power-on is not limited in the embodiment of the application. Those skilled in the art can try to enable the first control terminal first, or try to enable the second control terminal first.

[0037] It can be understood that the bridge drive chip is an integrated chip based on an H-bridge circuit, which can realize the current direction between the control signal and the load. The type of the bridge drive chip is not limited in the embodiment of the application, and those skilled in the art can selectively set it according to actual needs.

[0038] The wiring terminal 300 can further simplify the connection mode between the lamp strip 400 and the bridge chip, and improve the installation convenience of the lamp strip 400.

[0039] The specific type of the lamp strip 400 is not limited in the embodiment of the application, and those skilled in the art can selectively set it according to actual needs.

[0040] It can be understood that the function of the control module 100 is not limited in the application, and in addition to the above-mentioned enable control of the bridge chip, it can also realize functions such as lamp brightness control, curtain control, etc.

[0041] It can be understood that the control module 100 is not limited in the application, and in addition to the above-mentioned enable control of the bridge chip, it can also realize functions such as lamp brightness control, curtain control, etc. Figure 2As shown, the driving circuit 200 further comprises a diode, the first power output end of the bridge chip is provided with two positive output ends and two negative output ends, the two positive output ends are respectively arranged in one-to-one correspondence with the first control end and the second control end, the two negative output ends are respectively arranged in one-to-one correspondence with the first control end and the second control end, the two positive output ends are arranged in parallel and are connected with the first end of the diode, the two negative output ends are arranged in parallel and are connected with the second end of the diode, and the two ends of the diode are connected with the second side of the wiring terminal 300.

[0042] The protection of the lamp strip 400 can be realized by adding the diode.

[0043] As shown in the schematic diagram, the driving circuit 200 further comprises a bridge chip, a wiring terminal, a diode, a pressure-sensitive resistor, a first resistor, a first capacitor and a plurality of second resistors. Figure 2 As shown, the wiring terminal 300 is set as JP2; the diode is set as DV2, and the bridge chip is set as U6; wherein the No. 1 pin and the No. 2 pin of U6 are both input control ends and are respectively connected with the first control end (LED-PWM1 of U5 as shown) and the second control end (LED-PWM2 of U5 as shown). Figure 3 As shown, the LED-PWM1 of U5) and the second control end (LED-PWM2 of U5 as shown). Figure 3 As shown, the LED-PWM1 of U5) and the second control end (LED-PWM2 of U5 as shown). Figure 3 As shown, the LED-PWM1 of U5) and the second control end (LED-PWM2 of U5 as shown).

[0044] As shown, the driving circuit 200 further comprises a bridge chip, a wiring terminal, a diode, a pressure-sensitive resistor, a first resistor, a first capacitor and a plurality of second resistors. Figure 2 As shown, the driving circuit 200 further comprises a pressure-sensitive resistor, the pressure-sensitive resistor is arranged in parallel with the diode, the first end of the pressure-sensitive resistor is connected between the parallel end of the two positive output ends and the first end of the diode; and the second end of the pressure-sensitive resistor is connected between the parallel end of the two negative output ends and the second end of the diode.

[0045] As shown, the driving circuit 200 further comprises a bridge chip, a wiring terminal, a diode, a pressure-sensitive resistor, a first resistor, a first capacitor and a plurality of second resistors. Figure 2 As shown, the pressure-sensitive resistor is set as RV1, RV1 is arranged in parallel with DV2, and RV1 is located between the four output ends of U6 and DV2.

[0046] As shown, the driving circuit 200 further comprises a bridge chip, a wiring terminal, a diode, a pressure-sensitive resistor, a first resistor, a first capacitor and a plurality of second resistors. Figure 2 As shown, the driving circuit 200 further comprises a first resistor, a first capacitor and a plurality of second resistors, the plurality of second resistors are arranged in parallel, and the first ends of the plurality of second resistors arranged in parallel are all connected to the ground end of the bridge chip; the first end of the first resistor is connected with the first end of the plurality of second resistors arranged in parallel, the second end of the first resistor is connected with the first end of the first capacitor and the detection end, and the second ends of the first capacitor and the plurality of second resistors are all grounded.

[0047] As shown, the driving circuit 200 further comprises a bridge chip, a wiring terminal, a diode, a pressure-sensitive resistor, a first resistor, a first capacitor and a plurality of second resistors. Figure 2As shown, the first resistor is R32, the first capacitor is C33, and two second resistors are provided, which are R33 and R34. The skilled person in the art can set the number of second resistors according to actual needs. R33, R34 and C33 are all connected in parallel, and the second ends of R33, R34 and C33 are all grounded, the first ends of R33 and R34 are both connected to the ground end of U6, and the two ends of R32 are respectively connected to the first end of C33 and the first end of R33.

[0048] It can be understood that, referring to Figure 2 As shown, the drive circuit 200 further includes a plurality of second capacitors, the first ends of the plurality of second capacitors are connected between the external power supply and the first power input end of the bridge chip, and the second ends of the second capacitors are all grounded.

[0049] For example, as Figure 2 As shown, two second capacitors are provided, which are C30 and C31, and C30 and C31 are connected in parallel, and the first ends of C20 and C31 are both connected to the external power supply and the first power input end (i.e. the VCC pin of U6 in the figure); the second ends of C20 and C31 are grounded.

[0050] It can be understood that the bridge chip is set as a motor drive chip.

[0051] The embodiment of the present application does not limit the model of the motor drive chip, which can be set as SS6285M.

[0052] It can be understood that, referring to Figure 3 As shown, the control module 100 includes a control chip and a reset circuit, the control chip is provided with a reset end, a second power input end, a first control end, a second control end and a detection end; the reset end is connected to the output end of the reset circuit, and the second power input end is used for connecting an external power supply.

[0053] For example, as Figure 3 As shown, the control chip is set as U5, the first control end of U5 is pin 14, the second control end of U5 is pin 13, the detection end of U5 is pin 15, and pin 4 of U5 is the reset end.

[0054] The embodiment of the present application does not limit the structure of the reset circuit, which can be selectively set by the skilled person in the art according to actual needs.

[0055] It can be understood that, referring to Figure 3 As shown, the reset circuit includes a third resistor, a fourth resistor and a third capacitor, the third resistor and the fourth capacitor are connected in series, the first end of the third resistor away from the fourth capacitor is connected to an external power supply, the first end of the fourth capacitor away from the third resistor is grounded, the first end of the fourth resistor is connected between the third resistor and the third capacitor, and the second end of the fourth resistor is connected to the reset end.

[0056] As shown in the example, Figure 3 As shown in the example, the third resistor is set as R27, the third capacitor is set as C24, the fourth resistor is set as R28, the first end of R27 is connected to an external power supply, the second end of R27 is connected to the second end of C24, the first end of C24 is grounded, the first end of R28 is connected between R27 and C24, and the second end of R28 is connected to the fourth pin.

[0057] In a second aspect, the window curtain assembly according to the embodiments of the present application comprises the lamp strip 400 control circuit of any one of the first aspect.

[0058] The above is a specific description of the preferred embodiments of the present application, but the present application is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A light strip control circuit, characterized by, The application relates to a driving circuit for a light strip. The driving circuit comprises a control module, a driving circuit and a wiring terminal. The control module is provided with a first control end, a second control end and a detection end. The driving circuit comprises a bridge chip, two input control ends of the bridge chip are connected with the first control end and the second control end respectively, a grounding end of the bridge chip is connected with the detection end, and a first power input end of the bridge chip is used for connecting an external power supply. The first control end is used for outputting an enable signal to the corresponding input control end, so that the bridge chip outputs a forward current.

2. The light strip control circuit of claim 1, wherein, The second control end is used for outputting an enable signal to the corresponding input control end, so that the bridge chip outputs a reverse current.

3. The light strip control circuit of claim 2, wherein, The driving circuit further comprises a diode, the first power output end of the bridge chip is provided with two positive output ends and two negative output ends, the two positive output ends are correspondingly arranged with the first control end and the second control end respectively, the two negative output ends are correspondingly arranged with the first control end and the second control end respectively, the two positive output ends are connected with a first end of the diode in parallel, the two negative output ends are connected with a second end of the diode in parallel, and the two ends of the diode are connected with the second side of the wiring terminal.

4. The light strip control circuit of claim 1, wherein, The driving circuit further comprises a pressure-sensitive resistor, the pressure-sensitive resistor is arranged in parallel with the diode, a first end of the pressure-sensitive resistor is connected between the parallel connection end of the two positive output ends and the first end of the diode, and a second end of the pressure-sensitive resistor is connected between the parallel connection end of the two negative output ends and the second end of the diode.

5. The light string control circuit of claim 4, wherein, The driving circuit further comprises a first resistor, a first capacitor and a plurality of second resistors, the plurality of second resistors are arranged in parallel, and the first ends of the plurality of second resistors arranged in parallel are connected with the grounding end of the bridge chip, a first end of the first resistor is connected with the first ends of the plurality of second resistors arranged in parallel, a second end of the first resistor is connected with a first end of the first capacitor and the detection end, and the second ends of the first capacitor and the plurality of second resistors are grounded.

6. The light string control circuit of claim 1, wherein, The driving circuit further comprises a plurality of second capacitors, first ends of the plurality of second capacitors are connected between the external power supply and the first power input end of the bridge chip, and second ends of the second capacitors are grounded.

7. The light string control circuit of claim 1, wherein, The bridge chip is a motor driving chip. The control module comprises a control chip and a reset circuit, the control chip is provided with a reset end, a second power input end, a first control end, a second control end and a detection end, the reset end is connected with an output end of the reset circuit, and the second power input end is used for connecting an external power supply.

8. The light string control circuit of claim 7, wherein, The reset circuit comprises a third resistor, a fourth resistor and a third capacitor, the third resistor and the third capacitor are connected in series, a first end of the third resistor is connected to an external power supply away from the third capacitor, a first end of the fourth capacitor is grounded away from the third resistor, a first end of the fourth resistor is connected between the third resistor and the third capacitor, and a second end of the fourth resistor is connected to the reset end.

9. A window covering assembly, comprising: The lamp strip control circuit comprises the lamp strip control circuit as claimed in claim 1.

Images