Sleep and urine detection circuit
By designing a sleep and wet detection circuit, using piezoelectric sensors and temperature sensors to obtain signals and perform signal processing, the problem of inability to monitor wet and sleep states in the prior art is solved, and the simultaneous detection of wet and sleep is achieved , improving the applicability and application prospects of the equipment.
Patent Information
- Application Number
- CN202420844001.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing sleep monitoring circuit can only monitor the status of routine vital signs, such as heart rate, breathing and snoring, and cannot detect the status of wet urine, while the wet urine detection circuit can only detect the status of wet urine, and cannot monitor the status of vital signs, which leads to users need to use it. Two sets of equipment are used to achieve simultaneous urine wet detection and sleep monitoring.
A sleep and wet detection circuit was designed, including a sign detection module, a signal input port, a wet detection circuit, a signal processing module and a control module. The vital sign signal and wet detection signal are obtained through piezoelectric sensors and temperature sensors, and The processing is performed using signal amplification, power frequency filtering and signal separation circuits to achieve simultaneous wetness and sleep detection.
It effectively solves the shortcomings of single wet detection circuit and single sleep monitoring circuit, and realizes simultaneous wet detection and sleep detection functions, which have good applicability and application prospects.
Smart Images
Figure CN222357601U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of smart home, in particular to a sleep and urine detection circuit. Background Art
[0002] Existing sleep monitoring circuits based on piezoelectric sensors can only monitor conventional vital signs, such as heart rate, breathing, snoring, and body movement. They cannot monitor urine status, such as urine alarm. The sleep monitoring urine detection circuit can accurately determine whether the user wets the bed, and then combined with the existing sleep monitoring circuit, it can accurately determine the user's status and issue an alarm in time.
[0003] Existing sleep monitoring circuits can only monitor conventional vital signs, such as heart rate, breathing, snoring, and body movement, but cannot detect urine wetness.
[0004] The existing urine wetness detection circuit can only detect the normal urine wetness status. It cannot monitor the status of vital signs. The installation of existing sleep monitoring products and urine wetness detection products is not flexible enough. If the user needs to use urine wetness detection and sleep monitoring at the same time, two sets of equipment are required. Utility Model Content
[0005] In view of the above problems, the present utility model is proposed to provide a sleep and urine detection circuit that overcomes the above problems or at least partially solves the above problems.
[0006] The utility model provides a sleep and urine wetness detection circuit, which comprises: a vital sign detection module for acquiring a vital sign signal and a urine wetness detection signal, a signal input port, a urine wetness detection circuit for detecting the urine wetness detection signal, a signal processing module for processing the vital sign signal, a control module and a power supply module; the vital sign detection module, the signal input port, the urine wetness detection circuit, the signal processing module and the control module are all electrically connected to the power supply module, the signal input port is electrically connected to the vital sign detection module, the urine wetness detection circuit and the signal processing module respectively; the urine wetness detection circuit and the signal processing module are electrically connected to the control module respectively.
[0007] Optionally, the urine wetness detection circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor, a first TVS diode, a second TVS diode and a field effect transistor; one end of the first resistor and the second TVS diode in common is electrically connected to the signal input port, the other end of the first resistor is connected to the power module, and the other end of the second TVS diode is grounded; one end of the capacitor, the first TVS diode and the second resistor in common is electrically connected to the signal input port; the other end of the capacitor is grounded; the other end of the first TVS diode is grounded; the other end of the second resistor is in common with the third resistor, and one end of the second resistor and the third resistor in common is electrically connected to the gate of the field effect transistor; the other end of the third resistor is grounded; the source of the field effect transistor is grounded, and the drain of the field effect transistor is respectively connected to the fourth resistor and the control module; the other end of the fourth resistor is connected to the power module.
[0008] Optionally, the first TVS diode and the second TVS diode are both bidirectional TVS diodes.
[0009] Optionally, the field effect tube is an ao3400 field effect tube.
[0010] Optionally, the signal processing module includes a signal amplification circuit, an industrial frequency filtering circuit and a signal separation circuit which are electrically connected in sequence, the input end of the signal amplification circuit is electrically connected to the signal input port, and the output end of the signal separation circuit is electrically connected to the control module.
[0011] Optionally, the signal separation circuit includes a first vital sign output circuit, a second vital sign output circuit and a third vital sign output circuit connected in parallel;
[0012] The input end of the first vital sign output circuit is electrically connected to the output end of the power frequency filter circuit; the first vital sign output circuit is used to separate the first vital sign signal from the vital sign signal and output it to the control module;
[0013] The input end of the second vital sign output circuit is electrically connected to the output end of the power frequency filter circuit; the second vital sign output circuit is used to separate the second vital sign signal from the vital sign signal and output it to the control module;
[0014] The input end of the third vital sign output circuit is electrically connected to the output end of the power frequency filter circuit; the third vital sign output circuit is used to separate the third vital sign signal from the vital sign signal and output it to the control module.
[0015] Optionally, the vital sign detection module includes a piezoelectric sensor for detecting human vital signs and a temperature sensor for detecting urine wetness.
[0016] Optionally, the piezoelectric sensor may be a piezoelectric cable sensor or a piezoelectric film sensor.
[0017] Optionally, the signal input port is electrically connected to the piezoelectric sensor and the temperature sensor respectively, and the signal input port includes 4 groups of pins. Pin 1 and pin 2 of the signal input port input the vital sign signal to the signal processing module, and pin 3 and pin 4 of the signal input port input the urine wetness detection signal to the urine wetness detection circuit.
[0018] The technical solution provided in the embodiment of the utility model has at least the following technical effects or advantages:
[0019] The embodiment of the utility model detects and processes the urine wetness detection signal and the vital sign signal obtained by the vital sign detection module through the urine wetness detection circuit and the signal processing module, respectively, effectively solving the shortcomings of the single urine wetness detection circuit and the single sleep monitoring circuit in the prior art, thereby being able to realize the urine wetness detection and sleep detection functions at the same time, having good applicability and broad application prospects.
[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 This is a schematic diagram of the principle structure of the sleep and urine detection circuit of the utility model;
[0023] Figure 2 is a reference circuit diagram of the urine wetness detection circuit;
[0024] Figure 3 A reference schematic diagram of each pin of the signal input port;
[0025] Figure 4 is a schematic diagram of the principle structure of the signal processing module;
[0026] Figure 5 is a reference circuit diagram of the signal processing module.
[0027] Description of reference numerals:
[0028] 100, vital sign detection module; 200, signal input port; 300, urine wetness detection circuit; 400, signal processing module; 401, signal amplification circuit; 402, power frequency filtering circuit; 403, signal separation circuit; 500, control module; 600, power supply module. DETAILED DESCRIPTION
[0029] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.
[0030] In order to enable those skilled in the art to better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. The drawings show preferred embodiments of the present invention. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0031] Unless otherwise specified, various raw materials, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.
[0032] Figure 1 This is a schematic diagram of the principle structure of a sleep and urine detection circuit provided by the embodiment of the utility model, see Figure 1 As shown, the sleep and urine wetness detection circuit includes a vital sign detection module 100 for acquiring vital sign signals and urine wetness detection signals, a signal input port 200, a urine wetness detection circuit 300 for detecting the urine wetness detection signal, a signal processing module 400 for processing the vital sign signal, a control module 500 and a power module 600; the vital sign detection module 100, the signal input port 200, the urine wetness detection circuit 300, the signal processing module 400 and the control module 500 are all electrically connected to the power module 600, and the signal input port 200 is electrically connected to the vital sign detection module 100, the urine wetness detection circuit 300 and the signal processing module 400 respectively; the urine wetness detection circuit 300 and the signal processing module 400 are electrically connected to the control module 500 respectively.
[0033] See also Figure 2As shown, it is a reference circuit diagram of the urine wetness detection circuit 300, and the urine wetness detection circuit 300 includes a first resistor R21, a second resistor R22, a third resistor R23, a fourth resistor R24, a capacitor C21, a first TVS diode D2, a second TVS diode D3 and a field effect transistor Q2; one end of the first resistor R21 and the second TVS diode D3 in common is electrically connected to the signal input port 200 (pin 3), the other end of the first resistor R21 is connected to the power module 600, and the other end of the second TVS diode D3 is grounded; the capacitor C21, the first TVS diode D2 and the second TVS diode D3 are connected in common, and the first resistor R21 is connected to the power module 600, and the second TVS diode D3 is connected to the ground; One end of the resistor R22 is electrically connected to the signal input port 200 (pin 4); the other end of the capacitor C21 is grounded; the other end of the first TVS diode D2 is grounded; the other end of the second resistor R22 is connected to the third resistor R23, and one end of the second resistor R22 and the third resistor R23 is electrically connected to the gate of the field effect tube Q2; the other end of the third resistor R23 is grounded; the source of the field effect tube Q2 is grounded, and the drain of the field effect tube Q2 is connected to the fourth resistor R24 and the control module 500 respectively; the other end of the fourth resistor R24 is connected to the power module 600. The control module 500 detects the output signal of the field effect tube Q2 and analyzes the urine wetness state of the human body based on the conversion of high and low levels.
[0034] The first TVS diode D2 and the second TVS diode D3 are both bidirectional TVS diodes.
[0035] The field effect tube Q2 may be ao3400 field effect tube.
[0036] The vital sign detection module 100 includes a piezoelectric sensor for detecting human vital signs and a temperature sensor for detecting urine wetness; for example, the piezoelectric sensor may be a piezoelectric cable sensor or a piezoelectric film sensor.
[0037] The piezoelectric sensor is used to detect the heart rate, respiratory rate and snoring frequency of the human body, and convert the detected heart rate, respiratory rate and snoring frequency of the human body into corresponding electrical signals (ie, vital sign signals) and output them.
[0038] The temperature sensor is used to detect the urine test pad, and convert the detected urine temperature information into a corresponding electrical signal (ie, urine detection signal) and output it.
[0039] See also Figure 3As shown, this is a reference schematic diagram of each pin of the signal input port 200. The signal input port 200 is electrically connected to the piezoelectric sensor and the temperature sensor, respectively. The signal input port 200 includes 4 groups of pins, which can simultaneously input vital sign signals and urine wetness detection signals. Pin 1 and pin 2 of the signal input port 200 input the vital sign signal to the signal processing module 400, and pin 3 and pin 4 of the signal input port 200 input the urine wetness detection signal to the urine wetness detection circuit 300.
[0040] Since different vital signs of the human body have different frequency bands, the signal separation circuit 403 can separate the corresponding vital sign signals according to the frequency bands of different vital signs. For example, the human heart rate frequency band is usually 0.7Hz~2.25Hz, the breathing frequency band is usually 0.13Hz~0.58Hz, and the snoring frequency band is usually 200Hz~800Hz. The signal separation circuit 403 can filter out the vital sign signals of 0.7Hz~2.25Hz, 0.13Hz~0.58Hz and 200Hz~800Hz as heart rate vital sign signals, breathing vital sign signals and snoring vital sign signals, respectively, to analyze and record vital sign status, thereby monitoring sleep conditions.
[0041] See also Figure 4-5 As shown, Figure 4 is a schematic diagram of the principle structure of the signal processing module, Figure 5 : is a reference circuit diagram of the signal processing module. In an embodiment of the utility model, the signal processing module 400 includes a signal amplifying circuit 401, an industrial frequency filtering circuit 402 and a signal separation circuit 403 which are electrically connected in sequence. The input end of the signal amplifying circuit 401 is electrically connected to the signal input port 200, and the output end of the signal separation circuit 403 is electrically connected to the control module 500.
[0042] The signal amplifier circuit 401 is used to amplify the received vital sign signal so that the tiny vital sign signal can be received by the subsequent circuit after being amplified. The utility model adopts a single-ended input method to directly amplify the received single-ended signal, and can use a low-cost ordinary operational amplifier for amplification processing, thereby reducing costs.
[0043] The input end of the power frequency filter circuit 402 is connected to the output end of the signal amplifying circuit 401 . The power frequency filter circuit 402 is used to filter out power frequency noise in the received vital sign signal and output the filtered vital sign signal.
[0044] The signal separation circuit 403 is used to separate the vital sign signal of the corresponding frequency from the vital sign signal after amplification and filtering, wherein the signal separation circuit 403 includes a first vital sign output circuit, a second vital sign output circuit and a third vital sign output circuit connected in parallel, and the first vital sign output circuit, the second vital sign output circuit and the third vital sign output circuit respectively output the separated vital sign signals.
[0045] The input end of the first vital sign output circuit is electrically connected to the output end of the power frequency filter circuit 402; the first vital sign output circuit is used to separate the first vital sign signal from the vital sign signal and output it to the control module 500 through the ADC1 connection end;
[0046] The input end of the second vital sign output circuit is electrically connected to the output end of the power frequency filter circuit 402; the second vital sign output circuit is used to separate the second vital sign signal from the vital sign signal and output it to the control module 500 through the ADC2 connection end;
[0047] The input end of the third vital sign output circuit is electrically connected to the output end of the power frequency filter circuit 402; the third vital sign output circuit is used to separate the third vital sign signal from the vital sign signal and output it to the control module 500 through the ADC3 connection end;
[0048] In an embodiment of the utility model, the first vital sign output circuit is used to filter out a first vital sign signal in a first frequency band, such as a heart rate vital sign signal of 0.7 Hz to 2.25 Hz. The second vital sign output circuit is used to filter out a second vital sign signal in a second frequency band, such as a respiratory vital sign signal of 0.13 Hz to 0.58 Hz. The third vital sign output circuit is used to filter out a third vital sign signal in a third frequency band, such as a snoring vital sign signal of 200 Hz to 800 Hz.
[0049] In an embodiment of the utility model, the control module 500 can determine the urine wetness state of the human body according to the urine wetness detection signal output by the urine wetness detection circuit 300, and can determine the sleep state of the human body according to the vital sign signal output by the signal processing module 400.
[0050] The power module 600 is used to provide power support for various components such as the vital sign detection module 100, the signal input port 200, the urine wetness detection circuit 300, the signal processing module 400 and the control module 500.
[0051] The sleep and urine wetness detection circuit described in the embodiment of the utility model detects and processes the urine wetness detection signal and the vital sign signal obtained by the vital sign detection module 100 through the urine wetness detection circuit 300 and the signal processing module 400, respectively, effectively solving the shortcomings of the single urine wetness detection circuit 300 and the single sleep monitoring circuit in the prior art, thereby being able to realize the urine wetness detection and sleep detection functions at the same time, having good applicability and broad application prospects.
[0052] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.
[0053] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various utility model aspects, in the above description of exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the following intention: the claimed utility model requires more features than the features explicitly recited in each claim. More specifically, as reflected in the claims, the utility model aspects are less than all the features of the previously disclosed single embodiment. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.
[0054] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.
Claims
1. A sleep and urine detection circuit, characterized in that: The sleep and urine wetness detection circuit includes: a vital sign detection module for acquiring vital sign signals and urine wetness detection signals, a signal input port, a urine wetness detection circuit for detecting the urine wetness detection signal, a signal processing module for processing the vital sign signal, a control module and a power supply module; the vital sign detection module, the signal input port, the urine wetness detection circuit, the signal processing module and the control module are all electrically connected to the power supply module, and the signal input port is electrically connected to the vital sign detection module, the urine wetness detection circuit and the signal processing module respectively; the urine wetness detection circuit and the signal processing module are electrically connected to the control module respectively.
2. The sleep and urine detection circuit according to claim 1, characterized in that: The urine wetness detection circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor, a first TVS diode, a second TVS diode and a field effect transistor; one end of the first resistor and the second TVS diode in common is electrically connected to the signal input port, the other end of the first resistor is connected to the power module, and the other end of the second TVS diode is grounded; one end of the capacitor, the first TVS diode and the second resistor in common is electrically connected to the signal input port; the other end of the capacitor is grounded; the other end of the first TVS diode is grounded; the other end of the second resistor is in common with the third resistor, and one end of the second resistor and the third resistor in common is electrically connected to the gate of the field effect transistor; the other end of the third resistor is grounded; the source of the field effect transistor is grounded, and the drain of the field effect transistor is respectively connected to the fourth resistor and the control module; the other end of the fourth resistor is connected to the power module.
3. The sleep and urine detection circuit according to claim 2, characterized in that: The first TVS diode and the second TVS diode are both bidirectional TVS diodes.
4. The sleep and urine detection circuit according to claim 2, characterized in that: The field effect tube is an ao3400 field effect tube.
5. The sleep and urine detection circuit according to claim 1, characterized in that: The signal processing module includes a signal amplifying circuit, an industrial frequency filtering circuit and a signal separating circuit which are electrically connected in sequence, the input end of the signal amplifying circuit is electrically connected to the signal input port, and the output end of the signal separating circuit is electrically connected to the control module.
6. The sleep and urine detection circuit according to claim 5, characterized in that: The signal separation circuit comprises a first vital sign output circuit, a second vital sign output circuit and a third vital sign output circuit connected in parallel; The input end of the first vital sign output circuit is electrically connected to the output end of the power frequency filter circuit; the first vital sign output circuit is used to separate the first vital sign signal from the vital sign signal and output it to the control module; The input end of the second vital sign output circuit is electrically connected to the output end of the power frequency filter circuit; the second vital sign output circuit is used to separate the second vital sign signal from the vital sign signal and output it to the control module; The input end of the third vital sign output circuit is electrically connected to the output end of the power frequency filter circuit; the third vital sign output circuit is used to separate the third vital sign signal from the vital sign signal and output it to the control module.
7. The sleep and urine detection circuit according to claim 1, characterized in that: The vital sign detection module includes a piezoelectric sensor for detecting human vital signs and a temperature sensor for detecting urine wetness.
8. The sleep and urine detection circuit according to claim 7, characterized in that: The piezoelectric sensor is a piezoelectric cable sensor or a piezoelectric film sensor.
9. The sleep and urine detection circuit according to claim 7, characterized in that: The signal input port is electrically connected to the piezoelectric sensor and the temperature sensor respectively, and the signal input port includes 4 groups of pins. Pin 1 and pin 2 of the signal input port input the vital sign signal to the signal processing module, and pin 3 and pin 4 of the signal input port input the urine wetness detection signal to the urine wetness detection circuit.