Low-power-consumption standby circuit

Abstract

The embodiment of the utility model discloses a low-power-consumption standby circuit, which relates to the technical field of standby control and 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 utility model relates to standby control technical field especially, relates to a low -power standby circuit. BACKGROUND

[0002] Aiming at the social problem of energy conservation and emission reduction in the world today, the standby power consumption of product is more and more high, the requirement of less than 0.3W of standby power consumption is proposed in the European Union, this greatly increases the design difficulty of product, especially the small household appliance industry of low cost and low profit, to cope with such stringent requirements need to pay the cost of increasing cost. Directly reduce the market competitiveness of product. CONTENT

[0003] The technical problem to be solved by the embodiment of the utility model is to further reduce the standby power consumption of product on the basis of reducing cost.

[0004] In order to solve the above problem, the utility model embodiment discloses a low -power standby circuit. The energy consumption of the whole circuit is reduced by the mode of high voltage and low current to drive the relay at high frequency, and the voltage of the rear end is pulled down by the mode of dummy load when standby, and the effect of effectively reducing the power consumption of the whole power supply system when standby is achieved.

[0005] The utility model provides a low -power standby circuit, which 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 connected with the power supply interface and the first controller respectively, the load module is connected with the power supply interface and the first controller respectively and grounded, the switch is connected with the first controller and the second controller respectively and grounded, and the load module is connected with the detection module in parallel.

[0006] Further technical solutions thereof include a power supply and a voltage reduction module, and the voltage reduction module is connected with the power supply, the load module, the detection module and the first controller respectively.

[0007] Further technical solutions thereof include that the voltage reduction module comprises a first capacitor and a first resistor, and the first capacitor is connected with the first resistor in parallel.

[0008] Further technical solutions thereof include that the load module comprises a first transistor and a second resistor.

[0009] Further technical solutions thereof include a filter module, and the filter module is connected with the power supply interface and grounded.

[0010] Further technical solutions thereof include that the filter module comprises a second capacitor and a diode, and the second capacitor is connected with the diode in parallel.

[0011] The first controller comprises a relay.

[0012] The switch comprises a second transistor.

[0013] The further technical solution is that the low-power standby circuit further comprises a light-emitting module connected with the integrated circuit.

[0014] The further technical solution is that the low-power standby circuit further comprises a sound-emitting module connected with the integrated circuit.

[0015] Compared with the prior art, the technical effects achieved by the low-power standby circuit of the embodiments of the present application include:

[0016] The first controller is driven in a high-frequency mode by using high-voltage low-current, so that the energy consumption of the entire circuit is reduced, and the voltage at the rear end is pulled down in a dummy load mode during standby, thereby effectively reducing the power consumption of the entire power supply system during standby. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical schemes of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Fig. 1 A low-power standby circuit structure block diagram is provided for the embodiments of the present application.

[0019] Fig. 2 A low-power standby circuit diagram is provided for the embodiments of the present application.

[0020] REFERENCE NUMERALS

[0021] The first controller 1, the switch 2, the detection module 3, the integrated circuit 4, the load module 5, the second controller 41, and the power supply interface 42. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. In the drawings, similar component numerals represent similar components. Obviously, the following described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] It should be understood that the terms "comprise" and "include" as used in the specification and claims, indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0024] It should also be understood that the terms used in the present utility model embodiment specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model embodiments. As used in the present utility model embodiment specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] Referring to Figs. 1-2 The present utility model embodiment provides a low-power standby circuit. The low-power standby circuit comprises a first controller 1, a switch 2, a detection module 3, an integrated circuit 4 and a load module 5; the integrated circuit 4 comprises a second controller 41 and a power supply interface 42; the detection module 3 is connected with the power supply interface 42 and the first controller 1 respectively; the load module 5 is connected with the power supply interface 42 and the first controller 1 respectively and is grounded; the switch 2 is connected with the first controller 1 and the second controller 41 respectively and is grounded; and the load module 5 is connected with the detection module 3 in parallel. The specific introduction of each component is as follows:

[0026] In the present embodiment, the first controller 1 comprises a relay K1, the switch 2 comprises a triode Q1, the detection module 3 comprises a sensor SEN, the integrated circuit 4 comprises a chip U1, the load module 5 comprises a triode Q2, and the second controller 41 comprises an IO port (P11) for outputting RLY and an IO port (VDD) for outputting a positive power supply voltage.

[0027] The working process of the low-power standby circuit is as follows:

[0028] When the first controller 1 is to be attracted, the RLY output of the second controller 41 is first output as a high level for 100MS, the switch 2 is turned on, and the signal of the RLY of the first controller 1 becomes a pulse wave with a frequency of high frequency 16-35KHZ and a duty cycle of 30-40% after the first controller 1 is reliably attracted for 100MS, so as to maintain the on state of the first controller 1. When the first controller 1 is to be released, the RLY output of the second controller 41 is output as a constant low level, the switch 2 is turned off, and the first controller 1 is released. The mode of driving the first controller 1 with high voltage and low current at high frequency reduces the energy consumption of the entire circuit, and at the same time, the voltage at the back end is pulled down in the standby mode by using the false load mode, so that the power consumption of the entire power supply system in the standby mode is effectively reduced.

[0029] Continuing to refer toFigs. 1-2 In the embodiment, a power supply and a voltage reduction module are further included, and the voltage reduction module is connected with the power supply, the load module 5, the detection module 3 and the first controller 1 respectively.

[0030] In addition, the voltage reduction module includes a first capacitor and a first resistor, and the first capacitor is connected with the first resistor in parallel.

[0031] Specifically, the power supply includes a power supply interface AC1 and a power supply interface AC2 for outputting alternating current. In the embodiment, the first capacitor is a capacitor CX1 with a capacitance of 0.22 uF, and the first resistor is a resistor R2. The voltage reduction capacitor of the circuit is changed from a conventional 0.47 uF to 0.22 uF, so that the effect of saving cost and reducing volume is achieved.

[0032] Further, the load module 5 includes a first transistor and a second resistor.

[0033] In the embodiment, the first transistor is a triode Q2, and the second resistor is a resistor R9. In an embodiment, a time-division multiplexing mode in which the load module 5 and the sound production module share an IO port (P12) for driving is adopted, so that the resources of the single-chip microcomputer are saved.

[0034] Further, a filter module is further included, and the filter module is connected with the power supply interface 42 and grounded.

[0035] In addition, the filter module includes a second capacitor and a diode, and the second capacitor is connected with the diode in parallel.

[0036] Specifically, the filter module is used for absorbing the power supply ripple, and the parallel capacitor can also absorb the power supply ripple, so that the output voltage of the voltage stabilizing diode is more stable. The establishment time of the output voltage is increased due to the charging effect of the capacitor, so that the output voltage slowly rises. In the embodiment, the second capacitor is a capacitor C2, and the diode is a voltage stabilizing 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 that the sensor can be driven and the current can be saved.

[0037] Further, the first controller 1 includes a relay.

[0038] In the embodiment, the first controller 1 includes a relay with a voltage of 24 V, a power of 0.36 W and a rated inductance current of 15 MA. The entire circuit system is driven by a current of 3-4 MA to induct the first controller 1, so that the system does not adopt a current greater than 15 MA, and the effect of low power consumption is achieved.

[0039] Further, the switch 2 includes a second transistor.

[0040] In this embodiment, the second transistor is an NPN type triode Q1, the triode Q1 receives a high level of RLY, and the triode Q1 is turned on; the triode Q1 receives a low level of RLY, and the triode Q1 is turned off; the triode Q1 switches between the on / off states to achieve the effect of switch 2. Among them, the high level / low level of RLY is output by integrated circuit 4, the triode Q1 is turned on, and the relay is reliably attracted for 100MS. The signal of RLY becomes a pulse wave with a frequency of high frequency 16-35KHZ and a duty cycle of 30-40%, and the relay maintains the attracted state; the triode Q1 is turned off, and the relay is released.

[0041] Further, the light-emitting module is further included, and the light-emitting module is connected with the integrated circuit 4.

[0042] Specifically, the light-emitting module includes an LED lamp, the light-emitting module is connected with the integrated circuit 4, and the light-emitting module is controlled to emit light / extinguish by the integrated circuit 4.

[0043] Further, the sound-emitting module is further included, and the sound-emitting module is connected with the integrated circuit 4.

[0044] Specifically, the sound-emitting module includes a buzzer, in this embodiment, the sound-emitting module is connected with the integrated circuit 4 and the filter module respectively and grounded, and the sound-emitting module outputs sound to achieve alarm and remind the user.

[0045] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0046] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0047] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0049] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, these modifications and variations of the present application are intended to be included within the scope of the claims of the present application and equivalents thereof. Therefore, the present application is intended to include these modifications and variations.

[0050] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to 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 connected to both the power supply interface and the first controller, and is grounded. The switches are connected to the first controller and the second controller respectively, 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, the step-down module being 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 step-down module includes a first capacitor and a first resistor, wherein the first capacitor and the first resistor are connected in parallel.

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 filtering 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, with the second capacitor 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 sound-producing module, which is connected to the integrated circuit.

Images