Low-power-consumption standby circuit

Abstract

The embodiment of the invention discloses a low-power-consumption standby circuit, and relates to the technical field of standby control, the low-power-consumption standby circuit comprises a first controller, a switch, a detection module, an integrated circuit and a load module; the integrated circuit comprises a second controller and a power supply interface; the detection module is respectively connected with the power supply interface and the first controller; the load module is respectively connected with the power supply interface and the first controller and is grounded; the switch is respectively connected with the first controller and the second controller and is grounded; the load module is connected in parallel with the detection module. The mode that the first controller is driven by high voltage and low current in a high frequency mode is adopted, energy consumption of the whole circuit is reduced, meanwhile, voltage at the rear end is lowered in a dummy load mode during standby, and the effect of effectively reducing power consumption of the whole power system during standby is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of standby control, and in particular to a low-power standby circuit. Background Art

[0002] In response to the social issues of energy conservation and emission reduction in today's world, the requirements for standby power consumption of products are getting higher and higher. The EU has proposed a requirement that the standby power consumption should be less than 0.3W, which greatly increases the difficulty of product design, especially for the low-cost, low-profit small household appliance industry. To cope with such stringent requirements, it is necessary to pay the price of increased costs, which directly reduces the market competitiveness of products. Summary of the invention

[0003] The technical problem to be solved by the embodiments of the present invention is that it is difficult to further reduce the standby power consumption of the product on the basis of reducing the cost.

[0004] In order to solve the above problems, the embodiment of the present invention discloses a low-power standby circuit. The circuit adopts a high-voltage and low-current high-frequency driving method to reduce the energy consumption of the entire circuit, and at the same time, a dummy load is used to lower the voltage at the back end during standby, thereby effectively reducing the power consumption of the entire power supply system during standby.

[0005] The present invention provides a low-power standby circuit, which includes a first controller, a switch, a detection module, an integrated circuit and a load module; the integrated circuit includes a second controller and a power supply interface; the detection module is respectively connected to the power supply interface and the first controller; the load module is respectively connected to the power supply interface and the first controller and grounded; the switch is respectively connected to the first controller and the second controller and grounded; the load module is connected in parallel with the detection module.

[0006] A further technical solution is that it also includes a power supply and a step-down module, and the step-down module is respectively connected to the power supply, the load module, the detection module and the first controller.

[0007] A further technical solution is that the voltage reduction module includes a first capacitor and a first resistor, and the first capacitor and the first resistor are connected in parallel.

[0008] A further technical solution is that the load module includes a first transistor and a second resistor.

[0009] A further technical solution is that it also includes a filter module, which is connected to the power supply interface and grounded.

[0010] A further technical solution is that the filtering module includes a second capacitor and a diode, and the second capacitor is connected in parallel with the diode.

[0011] A further technical solution is that the first controller includes a relay.

[0012] A further technical solution is that the switch includes a second transistor.

[0013] A further technical solution is that it also includes a light emitting module, and the light emitting module is connected to the integrated circuit.

[0014] A further technical solution is that it also includes a pronunciation module, and the pronunciation module is connected to the integrated circuit.

[0015] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include: The first controller is driven at high frequency with high voltage and low current to reduce the energy consumption of the entire circuit. At the same time, a dummy load is used to lower the voltage at the back end during standby mode, thereby effectively reducing the power consumption of the entire power supply system during standby mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0017] Figure 1 A structural block diagram of a low-power standby circuit provided by an embodiment of the present invention; Figure 2 A low-power standby circuit diagram provided by an embodiment of the present invention.

[0018] Reference numerals A first controller 1 , a switch 2 , a detection module 3 , an integrated circuit 4 , a load module 5 , a second controller 41 , and a power supply interface 42 . DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0021] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to include plural forms.

[0022] See also Figure 1-2 , an embodiment of the present invention provides a low-power standby circuit. The low-power standby circuit includes a first controller 1, a switch 2, a detection module 3, an integrated circuit 4 and a load module 5; the integrated circuit 4 includes a second controller 41 and a power supply interface 42; the detection module 3 is respectively connected to the power supply interface 42 and the first controller 1; the load module 5 is respectively connected to the power supply interface 42 and the first controller 1, and is grounded; the switch 2 is respectively connected to the first controller 1 and the second controller 41, and is grounded; the load module 5 is connected in parallel with the detection module 3. The specific introduction of each component is as follows: In this embodiment, the first controller 1 includes a relay K1, the switch 2 includes a transistor Q1, the detection module 3 includes a sensor SEN, the integrated circuit 4 includes a chip U1, the load module 5 includes a transistor Q2, and the second controller 41 includes an IO port (P11) for outputting RLY and an IO port (VDD) for outputting a positive power supply voltage.

[0023] The working process of the low power standby circuit is as follows: When the first controller 1 is to be attracted, the RLY of the second controller 41 outputs a high level of 100MS, and the switch 2 is turned on. After the first controller 1 is reliably attracted for 100MS, the RLY signal becomes a pulse wave with a high frequency of 16-35KHZ and a duty cycle of 30-40% to maintain the on state of the first controller 1. When the first controller 1 is to be released, the RLY of the second controller 41 outputs a constant low level, the switch 2 is turned off, and the first controller 1 is released. The first controller 1 is driven by high voltage and low current at high frequency to reduce the energy consumption of the entire circuit. At the same time, the dummy load is used to lower the voltage at the back end during standby, which effectively reduces the power consumption of the entire power supply system during standby.

[0024] Continue to see Figure 1-2In this embodiment, it also includes a power supply and a step-down module, and the step-down module is connected to the power supply, the load module 5, the detection module 3 and the first controller 1 respectively.

[0025] Furthermore, the voltage reduction module includes a first capacitor and a first resistor, and the first capacitor is connected in parallel with the first resistor.

[0026] Specifically, the power supply includes a power interface AC1 and a power interface AC2 for outputting alternating current. In this embodiment, the first capacitor is a 0.22uF capacitor CX1, the first resistor is a resistor R2, and the step-down capacitor of the circuit is changed from the traditional 0.47uF to 0.22uF, achieving the effect of saving cost and reducing volume.

[0027] Furthermore, the load module 5 includes a first transistor and a second resistor.

[0028] In this embodiment, the first transistor is triode Q2, and the second resistor is resistor R9. In one embodiment, the load module 5 and the pronunciation module share an IO port (P12) to drive time-sharing multiplexing, saving the resources of the single-chip computer.

[0029] Furthermore, a filter module is included, and the filter module is connected to the power supply interface 42 and grounded.

[0030] Furthermore, the filtering module includes a second capacitor and a diode, and the second capacitor is connected in parallel with the diode.

[0031] Specifically, the filter module is used to absorb the power supply ripple, and the parallel capacitor can also absorb the power supply ripple, so that the output voltage of the voltage regulator diode is more stable. Increase the output voltage build-up time. Due to the charging effect of the capacitor, the build-up time of the voltage regulator diode output voltage will increase, so that the output voltage rises slowly. In this embodiment, the second capacitor is capacitor C2, and the diode is voltage regulator diode ZD1. The second capacitor and the diode are connected in parallel to the power supply interface 42 of the integrated circuit 4, and are connected in series with the detection module 3, so as to achieve both driving the sensor and saving current.

[0032] Furthermore, the first controller 1 includes a relay.

[0033] In this embodiment, the first controller 1 includes a 24V, 0.36W relay with a rated pull-in current of 15MA. The entire circuit system drives the first controller 1 to pull in through a 3-4MA current high voltage and high frequency, avoiding the system from using a current greater than 15MA and achieving a low power consumption effect.

[0034] Furthermore, the switch 2 includes a second transistor.

[0035] In this embodiment, the second transistor is an NPN transistor Q1. When the transistor Q1 receives the high level of RLY, the transistor Q1 is turned on. When the transistor Q1 receives the low level of RLY, the transistor Q1 is turned off. The transistor Q1 switches between the on / off states to achieve the effect of switch 2. The high level / low level of RLY is output by the integrated circuit 4. The transistor Q1 is turned on. After the relay is reliably attracted for 100MS, the signal of RLY changes to a pulse wave with a high frequency of 16-35KHZ and a duty cycle of 30-40%. The relay maintains the attracted state. When the transistor Q1 is turned off, the relay is released.

[0036] Furthermore, a light emitting module is included, and the light emitting module is connected to the integrated circuit 4 .

[0037] Specifically, the light emitting module includes an LED lamp, and the light emitting module is connected to the integrated circuit 4 , and the light emitting module is controlled by the integrated circuit 4 to light up / extinguish.

[0038] Furthermore, it also includes a pronunciation module, which is connected to the integrated circuit 4.

[0039] Specifically, the pronunciation module includes a buzzer. In this embodiment, the pronunciation module is connected to the integrated circuit 4 and the filter module respectively and grounded. The pronunciation module outputs sound to alarm the user.

[0040] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0045] The above is a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A low power standby circuit, characterized in that: It includes a first controller, a switch, a detection module, an integrated circuit and a load module; The integrated circuit includes a second controller and a power supply interface; The detection module is connected to the power supply interface and the first controller respectively; The load module is respectively connected to the power supply interface and the first controller, and is grounded; The switches are respectively connected to the first controller and the second controller and are grounded; The load module is connected in parallel with the detection module.

2. The low power standby circuit according to claim 1, characterized in that: It also includes a power supply and a step-down module, and the step-down module is connected to the power supply, the load module, the detection module and the first controller respectively.

3. The low power standby circuit according to claim 2, characterized in that: The voltage reduction module includes a first capacitor and a first resistor, and the first capacitor is connected in parallel with the first resistor.

4. The low power standby circuit according to claim 1, characterized in that: The load module includes a first transistor and a second resistor.

5. The low power standby circuit according to claim 1, characterized in that: It also includes a filter module, which is connected to the power supply interface and grounded.

6. The low power standby circuit according to claim 5, characterized in that: The filtering module includes a second capacitor and a diode, and the second capacitor is connected in parallel with the diode.

7. The low power standby circuit according to claim 1, characterized in that: The first controller includes a relay.

8. The low power standby circuit according to claim 1, characterized in that: The switch includes a second transistor.

9. The low power standby circuit according to claim 1, characterized in that: It also includes a light emitting module, which is connected to the integrated circuit.

10. The low power standby circuit according to claim 1, characterized in that: It also includes a pronunciation module, which is connected to the integrated circuit.

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