Signal induction circuit, induction device and intelligent bracelet

Abstract

The circuit is mainly used in the technical field of electronic circuits. The utility model provides a signal induction circuit, an induction device and an intelligent bracelet. The signal induction circuit comprises a signal input end, a signal output end, an amplification module and a switch module, the amplification module is used for carrying out signal amplification processing on the signal; the switch module is connected with the amplification module and used for controlling the amplification module to amplify a signal input through the signal input end and outputting the amplified signal through the signal output end when the switch module is in a first state, or controlling the amplification module to amplify the signal input through the signal input end and output the amplified signal through the signal output end when the switch module is in a second state. And the signal is output through the signal output end. According to the utility model, the response speed of the intelligent bracelet to the wake-up signal can be improved, and the intelligent bracelet is accelerated to be awakened from the sleep mode.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, and particularly relates to a signal induction circuit, an induction device and a smart bracelet. Background Art

[0002] At present, in order to reduce energy consumption, the smart bracelets on the market will automatically enter the sleep mode. When the user needs to use the smart bracelet, in response to the user operation, the smart bracelet is awakened from the sleep mode and returns to the normal operation state. However, these smart bracelets generally have the problem of slow response to the wake-up signal. Summary of the Utility Model

[0003] The utility model provides a signal induction circuit, an induction device and a smart bracelet, which can improve the response speed of the smart bracelet to the wake-up signal and accelerate the wake-up of the smart bracelet from the sleep mode.

[0004] A signal induction circuit provided by one aspect of the utility model includes a signal input end, a signal output end, an amplification module and a switch module;

[0005] The amplification module includes a feedback unit for amplifying the signal and performing feedback regulation during the signal amplification process by using the feedback unit;

[0006] The switch module is connected to the amplification module and is used for, when in the first state, controlling the amplification module to amplify the signal input through the signal input end and output the amplified signal through the signal output end, or, when in the second state, outputting the signal input through the signal input end through the signal output end.

[0007] Optionally, the amplification module includes a signal amplification unit;

[0008] The switch module includes a first switching device, one end of the first switching device is connected to the first input end of the signal amplification unit, and the other end of the first switching device is connected to the first output end of the signal amplification unit;

[0009] When the switch module is in the second state, the first input end of the signal amplification unit is connected to the first output end of the signal amplification unit through the closed first switching device to form a first path, or, when the switch module is in the first state, the first path is in an open state through the open first switching device.

[0010] Optionally, the amplification module includes a signal amplification unit;

[0011] The signal amplification unit includes an operational amplifier;

[0012] The first terminal of the operational amplifier serves as the first input terminal of the signal amplification unit, and the second terminal of the operational amplifier serves as the first output terminal of the signal amplification unit;

[0013] The third terminal of the operational amplifier is used to connect to a standard voltage source;

[0014] The first terminal of the feedback unit is connected to the first terminal of the operational amplifier, and the second terminal of the feedback unit is connected to the second terminal of the operational amplifier;

[0015] The switching module includes a second switching device. One end of the second switching device is connected to the first terminal of the operational amplifier, and the other end of the second switching device is connected to the third terminal of the operational amplifier;

[0016] When the switching module is in the second state, the first terminal of the operational amplifier is connected to the third terminal of the operational amplifier through the closed second switching device to form a second path. Or, when the switching module is in the first state, the second path is in an open state through the open second switching device.

[0017] Optionally, the feedback unit includes a first resistor and a first capacitor;

[0018] One end of the first resistor serves as the first terminal of the feedback unit and is connected to the first terminal of the operational amplifier, and the other end of the first resistor serves as the second terminal of the feedback unit and is connected to the second terminal of the operational amplifier;

[0019] One end of the first capacitor serves as the first terminal of the feedback unit and is connected to the first terminal of the operational amplifier, and the other end of the first capacitor serves as the second terminal of the feedback unit and is connected to the second terminal of the operational amplifier.

[0020] Optionally, the first switching device is a switching tube or a push-button switch.

[0021] Optionally, the second switching device is a switching tube or a push-button switch.

[0022] Optionally, the amplification module includes a filtering unit;

[0023] The input terminal of the filtering unit serves as the signal input terminal, and the output terminal of the filtering unit is connected to the first input terminal of the signal amplification unit.

[0024] Optionally, the filtering unit includes a second resistor and a second capacitor;

[0025] One end of the second resistor serves as the input end of the filtering unit. The other end of the second resistor is connected to one end of the second capacitor. The other end of the second capacitor serves as the output end of the filtering unit and is connected to the first input end of the signal amplification unit.

[0026] On the other hand, an induction device provided by the present utility model includes the signal induction circuit described in any one of the above.

[0027] On the other hand, a smart bracelet provided by the present utility model includes the induction device described above, or includes the signal induction circuit described in any one of the above.

[0028] The present utility model has at least the following beneficial effects:

[0029] The present utility model provides a signal induction circuit, an induction device and a smart bracelet. When the user normally uses the smart bracelet, the touch signal is input through the signal input end, and the amplification module is controlled by the switch module in the first state to amplify the wake-up signal. Finally, the amplified touch signal is output through the signal output end. When the user wants to wake up the smart bracelet in the sleep mode, the wake-up signal is input through the signal input end, and through the switch module in the second state, the wake-up signal is output through the signal output end, thereby reducing the steps of amplifying the wake-up signal, avoiding the slow signal transmission speed caused by the feedback adjustment in the signal amplification process, accelerating the transmission speed of the wake-up signal, and further improving the response speed of the smart bracelet to the wake-up signal and accelerating the wake-up of the smart bracelet from the sleep mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings are used to provide a further understanding of the technical solutions of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the technical solutions of the present utility model and do not constitute a limitation to the technical solutions of the present utility model.

[0031] Figure 1 is a first schematic structural diagram of a signal induction circuit;

[0032] Figure 2 is a second schematic structural diagram of a signal induction circuit;

[0033] Figure 3 is a third schematic structural diagram of a signal induction circuit;

[0034] Figure 4 is a fourth schematic structural diagram of a signal induction circuit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be 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 utility model and are not used to limit the present utility model.

[0036] Please refer to Figure 1 , Figure 1 which is a first structural schematic diagram of a signal sensing circuit.

[0037] The present embodiment provides a signal sensing circuit, including a signal input terminal, a signal output terminal, an amplification module and a switch module.

[0038] The amplification module includes a feedback unit, which is used to perform signal amplification processing on the signal and perform feedback regulation during the signal amplification processing by using the feedback unit.

[0039] The switch module is connected to the amplification module and is used to control the amplification module to amplify the signal input through the signal input terminal and output the amplified signal through the signal output terminal when in the first state, or to output the signal input through the signal input terminal through the signal output terminal when in the second state.

[0040] The present utility model provides a signal sensing circuit, a sensing device and a smart bracelet. When the user normally uses the smart bracelet, the touch signal is input through the signal input terminal, and the switch module in the first state controls the amplification module to amplify the wake-up signal, and finally outputs the amplified touch signal through the signal output terminal; when the user wants to wake up the smart bracelet in the sleep mode, the wake-up signal is input through the signal input terminal, and the switch module in the second state enables the wake-up signal to be output through the signal output terminal, thereby reducing the step of amplifying the wake-up signal, avoiding the slow signal transmission speed caused by the feedback regulation during the signal amplification processing, accelerating the transmission speed of the wake-up signal, and further improving the response speed of the smart bracelet to the wake-up signal and accelerating the wake-up of the smart bracelet from the sleep mode.

[0041] Please refer to Figure 2 , Figure 2 which is a second structural schematic diagram of a signal sensing circuit.

[0042] In some embodiments, the amplification module includes a signal amplification unit; the switching module includes a first switching device, one end of the first switching device is connected to the first input end of the signal amplification unit, and the other end of the first switching device is connected to the first output end of the signal amplification unit; when the switching module is in the second state, the first input end of the signal amplification unit is connected to the first output end of the signal amplification unit through the closed first switching device to form a first path, or when the switching module is in the first state, the first path is in an open state through the open first switching device.

[0043] In some embodiments, the first switching device is a switching tube or a push-button switch.

[0044] In this embodiment, the second input end of the signal amplification unit is used to input power supply, and the second output end of the signal amplification unit is grounded. When the switching module is in the first state, that is, the first switching device is in an open state, the signal is input through the first input end of the signal amplification unit, and the signal amplification unit amplifies the signal and outputs the amplified signal through the first output end of the signal amplification unit. When the switching module is in the second state, that is, the first switching device is in a closed state, the signal is transmitted to the signal output end through the closed first switching device before being input to the signal amplification unit, thereby reducing the step of the signal amplification unit amplifying the signal.

[0045] Please refer to Figure 3 , Figure 3 which is a third structural schematic diagram of a signal sensing circuit.

[0046] In some embodiments, the amplification module includes a signal amplification unit; the signal amplification unit includes an operational amplifier.

[0047] The first end of the operational amplifier serves as the first input end of the signal amplification unit, and the second end of the operational amplifier serves as the first output end of the signal amplification unit; the third end of the operational amplifier is used to connect to a standard voltage source.

[0048] The first end of the feedback unit is connected to the first end of the operational amplifier, and the second end of the feedback unit is connected to the second end of the operational amplifier.

[0049] The switching module includes a second switching device, one end of the second switching device is connected to the first end of the operational amplifier, and the other end of the second switching device is connected to the third end of the operational amplifier; when the switching module is in the second state, the first end of the operational amplifier is connected to the third end of the operational amplifier through the closed second switching device to form a second path, or when the switching module is in the first state, the second path is in an open state through the open second switching device.

[0050] In this embodiment, when the switch module is in the first state, that is, the first switching device is in the off state, a signal is input through the first input terminal of the signal amplification unit. The signal amplification unit amplifies the signal and outputs the amplified signal through the first output terminal of the signal amplification unit. When the switch module is in the second state, that is, the first switching device is in the on state, the first input terminal of the signal amplification unit is short-circuited with the second input terminal of the signal amplification unit, so that the voltages of the first input terminal and the second input terminal of the signal amplification unit are equal and equal to the voltage of the standard voltage source. Since the preset voltage of the standard voltage source (usually 1.65V) is higher than the voltage of the input signal, before the signal is input to the signal amplification unit, it is transmitted to the signal output terminal through the feedback unit, thereby reducing the step of the signal amplification unit amplifying the signal, and it can avoid that when the signal output terminal is connected to other circuits, when the signal is directly transmitted from the signal input terminal to the signal output terminal, the interference of a stronger signal from the signal output terminal to this signal.

[0051] Please refer to Figure 4 , Figure 4 which is a fourth structural schematic diagram of a signal sensing circuit.

[0052] In some embodiments, the feedback unit includes a first resistor R1 and a first capacitor C1; one end of the first resistor R1 is connected to the first end of the operational amplifier as the first end of the feedback unit, and the other end of the first resistor R1 is connected to the second end of the operational amplifier as the second end of the feedback unit; one end of the first capacitor C1 is connected to the first end of the operational amplifier as the first end of the feedback unit, and the other end of the first capacitor C1 is connected to the second end of the operational amplifier as the second end of the feedback unit.

[0053] In some embodiments, the feedback unit is a diode, the positive electrode of the diode is connected to the first end of the operational amplifier, and the negative electrode of the diode is connected to the second end of the operational amplifier.

[0054] In some embodiments, the second switching device is a switching transistor or a push-button switch.

[0055] In some embodiments, the amplification module includes a filtering unit; the input terminal of the filtering unit is used as the signal input terminal, and the output terminal of the filtering unit is connected to the first input terminal of the signal amplification unit.

[0056] In some embodiments, the filtering unit includes a second resistor R2 and a second capacitor C2; one end of the second resistor R2 is used as the input terminal of the filtering unit, the other end of the second resistor R2 is connected to one end of the second capacitor C2, and the other end of the second capacitor C2 is used as the output terminal of the filtering unit and is connected to the first input terminal of the signal amplification unit.

[0057] In some embodiments, the filtering unit is a third capacitor. One end of the third capacitor serves as a signal input terminal and is connected to the first input terminal of the signal amplification unit, and the other end of the third capacitor is grounded.

[0058] This embodiment provides an induction device, including any one of the above signal induction circuits.

[0059] This embodiment provides a smart bracelet, including any one of the above induction devices, or including any one of the above signal induction circuits.

[0060] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of this application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0061] It should be understood that in this application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects and indicates that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally means that the associated objects before and after are in an "or" relationship. "At least one (one) of the following" or its similar expressions refer to any combination of these items, including any combination of single item (one) or plural items (ones). For example, at least one (one) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0062] Although the description of this application is quite detailed and particularly describes several of the described embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, but should be regarded as effectively covering the intended scope of this application by referring to the appended claims and considering the broad possibilities of interpretation of these claims in light of the prior art. In addition, the above description of this application is made in terms of embodiments foreseeable by the inventor in order to provide a useful description, and those non-substantive changes to this application that are not currently foreseeable can still represent equivalent changes to this application.

Claims

1. A signal sensing circuit, characterized in that, It includes a signal input terminal, a signal output terminal, an amplification module, and a switching module; The amplification module includes a feedback unit for performing signal amplification processing on the signal and performing feedback regulation during the signal amplification processing using the feedback unit; The switching module is connected to the amplification module and is used to control the amplification module to amplify the signal input through the signal input terminal and output the amplified signal through the signal output terminal when in the first state, or to output the signal input through the signal input terminal through the signal output terminal when in the second state.

2. The signal sensing circuit according to claim 1, wherein The amplification module includes a signal amplification unit; The switching module includes a first switching device, one end of which is connected to the first input terminal of the signal amplification unit, and the other end of which is connected to the first output terminal of the signal amplification unit; When the switching module is in the second state, the first input terminal of the signal amplification unit is connected to the first output terminal of the signal amplification unit through the closed first switching device to form a first path, or when the switching module is in the first state, the first path is in an open state through the open first switching device.

3. The signal induction circuit according to claim 1, wherein The amplification module includes a signal amplification unit; The signal amplification unit includes an operational amplifier; The first end of the operational amplifier serves as the first input terminal of the signal amplification unit, and the second end of the operational amplifier serves as the first output terminal of the signal amplification unit; The third end of the operational amplifier is used to connect to a standard voltage source; The first end of the feedback unit is connected to the first end of the operational amplifier, and the second end of the feedback unit is connected to the second end of the operational amplifier; The switching module includes a second switching device, one end of which is connected to the first end of the operational amplifier, and the other end of which is connected to the third end of the operational amplifier; When the switching module is in the second state, the first end of the operational amplifier is connected to the third end of the operational amplifier through the closed second switching device to form a second path, or when the switching module is in the first state, the second path is in an open state through the open second switching device.

4. A signal induction circuit according to claim 3, characterized in that, The feedback unit includes a first resistor and a first capacitor; One end of the first resistor serves as the first end of the feedback unit and is connected to the first end of the operational amplifier, and the other end of the first resistor serves as the second end of the feedback unit and is connected to the second end of the operational amplifier; One end of the first capacitor serves as the first end of the feedback unit and is connected to the first end of the operational amplifier, and the other end of the first capacitor serves as the second end of the feedback unit and is connected to the second end of the operational amplifier.

5. A signal sensing circuit according to claim 2, characterized in that, The first switching device is a switching tube or a push-button switch.

6. A signal sensing circuit according to claim 3, characterized in that The second switching device is a switching tube or a push-button switch.

7. A signal sensing circuit according to any one of claims 2 to 6, characterized in that, The amplification module includes a filtering unit; The input end of the filtering unit serves as the signal input terminal, and the output end of the filtering unit is connected to the first input terminal of the signal amplification unit.

8. A signal induction circuit according to claim 7, characterized in that, The filtering unit includes a second resistor and a second capacitor; One end of the second resistor serves as the input end of the filtering unit, the other end of the second resistor is connected to one end of the second capacitor, and the other end of the second capacitor serves as the output end of the filtering unit and is connected to the first input end of the signal amplification unit.

9. An induction device, characterized in that, It includes the signal induction circuit according to any one of claims 1 to 8.

10. An intelligent bracelet, characterized in that, It includes the induction device according to claim 9, or includes the signal induction circuit according to any one of claims 1 to 8.

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