Mother and infant temperature sensing structure with charging function

Abstract

The utility model discloses a maternal and infant temperature sensing structure with a charging function, and relates to the technical field of maternal and infant products, the maternal and infant temperature sensing structure comprises a control part and a functional part detachably connected to the control part, the functional part comprises a temperature sensing part and a power supply part, and the control part is provided with a first power connection interface. The functional component is provided with a second power connection interface, so that electrical connection is realized through contact matching of the first power connection interface and the second power connection interface; a main circuit power supply module electrically connected to the first power connection interface is arranged in the control part; the main circuit power supply module comprises a function identification and switching unit, and a temperature measurement circuit and a charging management circuit which are electrically connected to the function identification and switching unit respectively; two important functions of charging and temperature measurement are ingeniously integrated, and efficient integration and flexible application of the functions are realized through an innovative circuit design and a detachable interface connection mode.

Description

Technical Field

[0001] The utility model relates to the technical field of mother and baby products, and specifically relates to a temperature sensing structure for mother and baby with a charging function. Background Art

[0002] In the field of mother and baby products, with the increasing emphasis on the care of infants and young children, the demand for devices that can accurately sense temperature and have a charging function is becoming increasingly urgent. Traditional temperature sensing devices for mother and baby have many deficiencies in terms of function and usability.

[0003] Taking the common temperature sensing spoon as an example of traditional temperature sensing devices for mother and baby, it is used to assist in feeding infants and young children food, and it is necessary to accurately sense the temperature of the food to prevent scalding the baby. Another example is the thermometer used to measure the temperature of the baby's bath water. Since the requirements for the water temperature during the baby's bath are relatively strict, accurate temperature measurement is crucial. Also, some nipple-type temperature measurement devices integrate temperature sensing elements in the nipple to measure the temperature of the liquid consumed by infants and young children.

[0004] Most of the above traditional temperature sensing devices for mother and baby adopt an integrated design, and the internal circuits and various components are connected in a fixed and non-detachable manner. This structure has significant defects. Once a key component in the device, such as a sensor, battery, or circuit element, fails or is damaged, since the faulty component cannot be replaced individually, it usually means the scrapping of the entire device. This not only causes waste of resources but also greatly increases the maintenance and replacement costs for users.

[0005] In terms of function, most of the existing mother and baby temperature sensing devices have a single function and often only focus on the basic function of temperature measurement, while ignoring the user's need to charge the device during actual use. These devices usually rely on disposable batteries to provide power, which brings a series of problems. The use of disposable batteries not only causes greater pressure on the environment, is not environmentally friendly, but also requires frequent battery replacement, bringing inconvenience and additional expenses to users.

[0006] Therefore, in order to better meet the needs of mother and baby users for temperature sensing devices in terms of diversified functions, convenient operation, flexible component connection, and efficient and stable circuits, it is extremely urgent to develop a new type of temperature sensing structure for mother and baby with a charging function. Content of the Utility Model

[0007] The utility model aims to provide a technical solution to solve the above problems in order to overcome the above situations.

[0008] A temperature-sensing structure for mother and baby with a charging function, comprising a control component and a functional component detachably connected to the control component. The functional component is a temperature-sensing component and a power supply component. The control component has a first power connection interface, and the functional component has a second power connection interface, so as to realize electrical connection through the contact cooperation of the first power connection interface and the second power connection interface;

[0009] Inside the control component, there is a main circuit power supply module electrically connected to the first power connection interface. The main circuit power supply module includes a function identification and switching unit, a temperature measurement circuit and a charging management circuit respectively electrically connected to the function identification and switching unit. The function identification and switching unit is used to determine whether the current mode is the charging management circuit working mode or the temperature measurement circuit working mode, so as to use the first power connection interface as an input terminal to connect to the power supply component to realize charging, or use the first power connection interface as an output terminal to connect to the temperature-sensing component to realize temperature measurement.

[0010] As a further solution of the present invention: the function identification and switching unit includes an MCU processor and a function identification and switching circuit electrically connected thereto. The main circuit power supply module further includes a function input circuit corresponding to the first power connection interface, where:

[0011] The function input circuit is used to input a signal about enabling the temperature-sensing component or the power supply component to the MCU processor. The MCU processor sends an instruction to the function identification and switching circuit according to this signal. The function identification and switching circuit is used to determine and switch to the temperature measurement circuit working mode to realize temperature measurement, or switch to the charging management circuit working mode to realize charging according to the received instruction.

[0012] As a further solution of the present invention: the identification and switching circuit includes a detection circuit, a temperature measurement switch circuit and a charging switch circuit respectively electrically connected to the detection circuit. The detection circuit jointly with the MCU processor receives the analog signal transmitted by the function input circuit, and according to this analog signal, controls the enabling or disconnection of the temperature measurement circuit through the temperature measurement switch circuit, and controls the enabling or disconnection of the charging management circuit through the charging switch circuit.

[0013] As a further solution of the present invention: the analog signal is a real-time voltage detection of the function input circuit, where:

[0014] When the connected functional component is a power supply component, the real-time voltage of the function input circuit is in a high voltage state, the charging switch circuit is closed, and the charging management circuit is enabled. The temperature measurement switch circuit is disconnected, and the temperature measurement circuit is disconnected;

[0015] When the connected functional component is a temperature-sensing component, the real-time voltage of the functional input circuit is in a low-voltage state, the temperature-measuring switch circuit is closed, enabling the temperature-measuring circuit, and the charging switch circuit is disconnected, disconnecting the charging management circuit.

[0016] As a further solution of the present utility model: The detection circuit includes a transistor Q3, a resistor R13, and a ground terminal GND. Among them, the first end of the resistor R13 is connected between the temperature-measuring switch circuit and the MCU processor, the second end of the resistor R13 is connected to the ground terminal GND, the gate of the transistor Q3 is connected to the first end of the resistor R13, the source of the transistor Q3 is connected to the second end of the resistor R13, and the drain of the transistor Q3 is connected to the charging switch circuit.

[0017] As a further solution of the present utility model: The charging switch circuit includes a transistor Q4 and a resistor R14. The first end of the resistor R14 is connected to the drain of the transistor Q3, the second end of the resistor R14 is connected to the functional input circuit, the gate of the transistor Q4 is connected to the first end of the resistor R14, the source of the transistor Q4 is connected to the charging management circuit, and the drain of the transistor Q4 is connected to the second end of the resistor R14.

[0018] As a further solution of the present utility model: The temperature-measuring switch circuit includes transistors Q1 and Q2, and resistors R11 and R12. The source of the transistor Q1 is connected to the temperature-measuring circuit, the source of the transistor Q2 is connected to the functional input circuit, the drains of the transistor Q1 and the transistor Q2 are both connected to the first end of the resistor R11, the gates of the transistor Q1 and the transistor Q2 are both connected to the second end of the resistor R11 and the first end of the resistor R12, and the second end of the resistor 12 is connected to the first end of the resistor R13 and the MCU processor.

[0019] As a further solution of the present utility model: The MCU processor has an AD_EN signal terminal to receive the analog signal transmitted by the functional input circuit through the AD_EN signal terminal, and send an instruction to the functional identification and switching circuit according to the analog signal through the AD_EN signal terminal.

[0020] As a further solution of the present utility model: A temperature-sensing element electrically connected to the second power connection interface is provided inside or on the temperature-sensing component, and the temperature-sensing element is an NTC.

[0021] As a further solution of the present utility model: A battery pack is provided inside the control component. In the working mode of the temperature-measuring circuit, the battery pack provides power for the main circuit power module, and in the working mode of the charging management circuit, the battery pack is charged.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] 1) It skillfully integrates two important functions of charging and temperature measurement, and realizes the efficient integration and flexible application of functions through innovative circuit design and detachable interface connection methods;

[0024] 2) The charging and temperature measurement functions are integrated into one structure. In particular, the introduction of the charging function reduces the dependence on disposable batteries, reduces environmental pollution caused by waste batteries. At the same time, the reasonable design of the charging management circuit also helps to improve energy utilization efficiency, extend battery life, and achieve the sustainable use of the device. The temperature measurement circuit provides accurate temperature guarantee for the baby's diet, bathing, etc. The two work together to greatly improve the user experience;

[0025] 3) The detachable connection method makes the replacement of functional components extremely convenient. When the temperature sensing component fails, users do not need to send the entire device for repair or replacement. They only need to replace the temperature sensing component alone, which greatly saves time and cost. At the same time, this design also facilitates users to flexibly select and combine different functional components according to personal needs and usage scenarios to meet diverse requirements;

[0026] 4) The presence of the function recognition and switching unit enables the device to automatically judge the currently connected functional component and adjust the working mode accordingly. This intelligent switching not only reduces the user's operation steps but also avoids circuit failures or functional abnormalities caused by misoperation, improving the stability and reliability of the device;

[0027] 5) The temperature measurement circuit and the charging management circuit are designed to operate independently. They each have their own dedicated switch circuits, which can be accurately enabled when needed and completely turned off when not needed, without interfering with each other. This independence not only reduces the mutual influence between circuits but also greatly improves the stability and reliability of the entire system in different working modes. Even in the case of frequent mode switching, it can ensure that the device always operates stably.

[0028] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 is the structural schematic diagram of the present utility model;

[0031] Figure 2 is the structural schematic diagram of the cooperation between the control component and the temperature sensing component of the present utility model;

[0032] Figure 3 is Figure 2 the sectional structural schematic diagram of;

[0033] Figure 4 is the circuit block diagram of the present utility model;

[0034] Figure 5 is the circuit schematic diagram of the present utility model;

[0035] Figure 6 is the circuit schematic diagram of the present utility model, in which, the function identification and switching unit and the function input circuit are marked;

[0036] Figure 7 is the circuit schematic diagram of the present utility model, in which, the detection circuit, the temperature measurement switch circuit and the charging switch circuit are marked.

[0037] The reference numerals and names in the figure are as follows:

[0038] 1. Control component; 2. Function component; 3. Temperature sensing component; 4. Power supply component; 5. First power connection interface; 6. Second power connection interface; 7. Main circuit power supply module; 8. Function identification and switching unit; 9. Temperature measurement circuit; 10. Charging management circuit; 11. MCU processor; 12. Function identification and switching circuit; 13. Function input circuit; 14. Detection circuit; 15. Temperature measurement switch circuit; 16. Charging switch circuit; 17. Temperature sensing element; 18. Battery pack. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0040] Please refer to Figure 1-7, in the embodiment of the present utility model, a temperature-sensing structure for mother and baby with a charging function includes a control component 1 and a function component 2 detachably connected to the control component 1. The function component 2 is a temperature-sensing component 3 and a power supply component 4. The control component 1 has a first power connection interface 5, and the function component 2 has a second power connection interface 6, so as to realize electrical connection through the contact cooperation of the first power connection interface 5 and the second power connection interface 6;

[0041] Inside the control component 1, there is a main circuit power module 7 electrically connected to the first power connection interface 5. The main circuit power module 7 includes a function recognition and switching unit 8, a temperature measurement circuit 9 and a charging management circuit 10 respectively electrically connected to the function recognition and switching unit 8. The function recognition and switching unit 8 is used to determine whether the current mode is the working mode of the charging management circuit 10 or the working mode of the temperature measurement circuit 9, so as to connect the first power connection interface 5 as an input end to connect with the power supply component 4 to realize charging, or connect the first power connection interface 5 as an output end to connect with the temperature-sensing component 3 to realize temperature measurement.

[0042] In the technical solution of the present utility model, the control component 1 can be a handheld intelligent controller (such as a handle), which is small and light in appearance, easy to hold, and has a liquid crystal display screen that can display information such as temperature values and charging status in real time. Inside it, a circuit chip (such as a high-precision ADC conversion chip) and a battery pack 18 are integrated to ensure the stable operation and long battery life of the device; the temperature-sensing component 3 in the function component 2 can be a thermistor probe (such as a spoon, fork, needle / rod-shaped structure with a thermistor probe), which can quickly and accurately sense temperature changes after special encapsulation and protection treatment. The probe part is made of food-grade material to ensure the safety of contact with the baby. The temperature-sensing probe is connected to the control component 1 through the second power connection interface 6 to transmit the temperature signal to the control component 1 for processing and display; the power supply component 4 in the function component 2 can be an external power supply such as a power adapter; among them, the first power connection interface 5 and the second power connection interface 6 can be DC interfaces, so as to facilitate the detachable connection between the control component 1 and the function component 2, which not only ensures the stability and reliability of signal transmission, but also provides a convenient physical basis for the flexible disassembly and replacement of the function component 2.

[0043] The core design principle of this temperature-sensing structure for mother and baby lies in the ingenious integration of two important functions: charging and temperature measurement. Through innovative circuit design and detachable interface connection methods, the efficient integration and flexible application of functions are achieved. Specifically, inside the control component 1, the function recognition and switching unit 8 in the main circuit power supply module 7 can continuously monitor and analyze the electrical signal characteristics when the first power connection interface 5 is connected to the functional component 2. When the power supply component 4 contacts and mates with the first power connection interface 5 through the second power connection interface 6, the function recognition and switching unit 8 will identify this connection and adjust the circuit configuration to the working mode of the charging management circuit 10. At this time, the current flows in from the power supply component 4 and, after being optimized and regulated by the charging management circuit 10, charges the internal battery pack 18. When the temperature-sensing component 3 is connected to the first power connection interface 5 of the control component 1 through its second power connection interface 6, the function recognition and switching unit 8 will detect this change and correspondingly switch the circuit to the working mode of the temperature measurement circuit 9. In this mode, the control component 1 provides the required power to the temperature-sensing component 3 and receives and processes the temperature data transmitted from the temperature-sensing component 3 to achieve accurate temperature measurement.

[0044] In summary, integrating the charging and temperature measurement functions into one structure, especially the introduction of the charging function reduces the dependence on disposable batteries and the environmental pollution caused by waste batteries. At the same time, the reasonable design of the charging management circuit 10 also helps to improve energy utilization efficiency and extend battery life, realizing the sustainable use of the device. The temperature measurement circuit 9 provides accurate temperature guarantee for the baby's diet, bathing, etc. The two work together to greatly improve the user experience. The detachable connection method makes the replacement of the functional component 2 extremely convenient. When the temperature-sensing component 3 fails, the user does not need to send the whole device for repair or replacement, but only needs to replace the temperature-sensing component 3 alone, which greatly saves time and cost. At the same time, this design also facilitates the user to flexibly select and combine different functional components 2 according to personal needs and usage scenarios to meet diverse requirements. The existence of the function recognition and switching unit 8 enables the device to automatically judge the currently connected functional component 2 and correspondingly adjust the working mode. This intelligent switching not only reduces the user's operation steps but also avoids circuit failures or functional abnormalities caused by misoperation, improving the stability and reliability of the device.

[0045] In the embodiment of the present utility model, the function recognition and switching unit 8 includes an MCU processor 11 and a function recognition and switching circuit 12 that are electrically connected. The main circuit power supply module 7 further includes a function input circuit 13 corresponding to the first power connection interface 5, where:

[0046] The function input circuit 13 is used to input a signal for enabling the temperature sensing component 3 or the power supply component 4 to the MCU processor 11. The MCU processor 11 sends an instruction to the function identification and switching circuit 12 according to this signal. The function identification and switching circuit 12 is used to determine and switch to the working mode of the temperature measurement circuit 9 to implement temperature measurement or switch to the working mode of the charging management circuit 10 to implement charging according to the received instruction.

[0047] The function input circuit 13 can be composed of a DC+ and a DC- interface, which is responsible for transmitting electrical parameters from the first power connection interface 5, such as voltage value, current value, resistance value, etc., to the MCU processor 11. The MCU processor 11 has preset different judgment thresholds and rules. After receiving these electrical parameters, it will compare and analyze them with the preset thresholds and rules;

[0048] If the received electrical parameters conform to the characteristics when connected to the temperature sensing component 3, such as a specific resistance range or current change mode or low voltage input, etc., the MCU processor 11 determines that the enabled component is the temperature sensing component 3 and sends an instruction to the function identification and switching circuit 12 to switch to the working mode of the temperature measurement circuit 9. At this time, the electronic switch element in the function identification and switching circuit 12 will change its conduction state, so that the current path is adjusted to flow from the battery pack 18 to the temperature measurement circuit 9, thus realizing the normal operation of the temperature sensing component 3;

[0049] On the contrary, if the electrical parameters conform to the characteristics when connected to the power supply component 4, such as a stable high voltage input, the MCU processor 11 determines that the enabled component is the power supply component 4 and sends an instruction to switch to the working mode of the charging management circuit 10. The function identification and switching circuit 12 correspondingly adjusts the current path to allow the current from the power supply component 4 to charge the battery pack 18 through the charging management circuit 10.

[0050] Among them, the function identification and switching circuit 12 includes a series of electronic switch elements, such as field effect transistors, relays, etc. These switch elements change their conduction states according to the instructions received from the MCU processor, so as to realize the switching of different circuit paths.

[0051] In the embodiment of the present invention, the identification and switching circuit includes a detection circuit 14, a temperature measurement switch circuit 15 and a charging switch circuit 16 respectively electrically connected to the detection circuit 14. The detection circuit 14 jointly with the MCU processor 11 receives the analog signal transmitted by the function input circuit 13, and according to this analog signal, controls the enabling or disconnection of the temperature measurement circuit 9 through the temperature measurement switch circuit 15, and controls the enabling or disconnection of the charging management circuit 10 through the charging switch circuit 16.

[0052] The function input circuit 13 is responsible for collecting various electrical parameters from the first power connection interface 5 through the DC+ and DC- interfaces, including but not limited to voltage values, current values, resistance values, etc., and transmitting these electrical parameters to the MCU processor 11 in the form of analog signals;

[0053] The detection circuit 14 in the identification and switching circuit plays a key role. It closely cooperates with the MCU processor 11 to receive the analog signals transmitted from the function input circuit 13 in real time, and the MCU processor 11 analyzes and processes these analog signals;

[0054] When the characteristics of the received analog signal match the conditions for enabling the temperature sensing component 3, such as a specific resistance value change pattern, etc., the detection circuit 14 will immediately send precise control instructions to the temperature measurement switch circuit 15. The electronic components in the temperature measurement switch circuit 15, such as transistors or relays, will quickly change their conduction states according to the instructions, thereby turning on the temperature measurement circuit 9. At the same time, it ensures that the charging switch circuit 16 is in the off state, allowing the current to flow to the temperature measurement circuit 9. At this time, the electrical energy output by the battery pack 18 provides power for the temperature measurement circuit 9, and the temperature sensing component 3 starts to accurately sense the temperature and transmits the data back to the control component 1 for processing and display;

[0055] On the contrary, when the characteristics of the analog signal indicate that the power supply component 4 needs to be enabled for charging, the detection circuit 14 will respond quickly and send an opening instruction to the charging switch circuit 16, while ensuring that the temperature measurement switch circuit 15 is in the closed state. The electronic components in the charging switch circuit 16 will adjust their conduction states so that the current from the power supply component 4 can smoothly pass through the charging management circuit 10 to charge the battery pack 18 safely and efficiently.

[0056] As described above, through the cooperation of the detection circuit 14, the temperature measurement switch circuit 15, the charging switch circuit 16 and the MCU processor 11, precise enabling and closing control of the temperature measurement circuit 9 and the charging management circuit 10 is achieved, avoiding unnecessary circuit losses and interference; the temperature measurement circuit 9 and the charging management circuit 10 are designed to operate truly independently. They each have their own dedicated switch circuits, which can be precisely enabled when needed and completely turned off when not needed, without interfering with each other. This independence not only reduces the mutual influence between circuits, but also greatly improves the stability and reliability of the entire system in different working modes. Even in the case of frequent mode switching, it can ensure that the device always operates stably.

[0057] In the embodiment of the present utility model, the analog signal is a real-time voltage detection of the function input circuit 13, where:

[0058] When the connected functional component 2 is the power supply component 4, the real-time voltage of the functional input circuit 13 is in a high voltage state, the charging switch circuit 16 is closed, enabling the charging management circuit 10, the temperature measurement switch circuit 15 is opened, and the temperature measurement circuit 9 is opened;

[0059] When the connected functional component 2 is the temperature sensing component 3, the real-time voltage of the functional input circuit 13 is in a low voltage state, the temperature measurement switch circuit 15 is closed, enabling the temperature measurement circuit 9, the charging switch circuit 16 is opened, and the charging management circuit 10 is opened.

[0060] In the circuit, when different functional components 2 are connected, it will cause changes in parameters such as resistance and current in the circuit, and these changes will ultimately be reflected in the voltage. By detecting the change in the voltage value, it is possible to directly and quickly determine which functional component 2 is connected;

[0061] For example, when the connected functional component 2 is the power supply component 4, since the power supply component 4 usually provides a relatively high voltage output, such as a common 5V or 9V charger, this will make the real-time voltage of the functional input circuit 13 in a high voltage state, such as detecting a voltage of 5V or higher. After this high voltage signal is detected, it is transmitted to the detection circuit 14 and the MCU processor 11. Subsequently, the charging switch circuit 16 is closed, enabling the charging management circuit 10 to start charging the battery pack 18; at the same time, the temperature measurement switch circuit 15 is opened, opening the temperature measurement circuit 9 to avoid misoperation of the temperature measurement circuit 9 during charging;

[0062] When the connected functional component 2 is the temperature sensing component 3, the temperature sensing component 3 itself usually does not provide a large voltage and may only generate a relatively low voltage signal, such as about 1V. After this low voltage signal is detected and recognized, the temperature measurement switch circuit 15 is closed, enabling the temperature measurement circuit 9 to allow the temperature sensing component 3 to work properly for temperature measurement; at the same time, the charging switch circuit 16 is opened, opening the charging management circuit 10 to prevent this charging circuit from interfering with the temperature measurement.

[0063] In the embodiment of the present invention, the detection circuit 14 includes a transistor Q3, a resistor R13, and a ground terminal GND. Among them, the first end of the resistor R13 is connected between the temperature measurement switch circuit 15 and the MCU processor 11, the second end of the resistor R13 is connected to the ground terminal GND, the gate of the transistor Q3 is connected to the first end of the resistor R13, the source of the transistor Q3 is connected to the second end of the resistor R13, and the drain of the transistor Q3 is connected to the charging switch circuit 16.

[0064] The charging switch circuit 16 includes a transistor Q4 and a resistor R14. The first end of the resistor R14 is connected to the drain of the transistor Q3. The second end of the resistor R14 is connected to the function input circuit 13. The gate of the transistor Q4 is connected to the first end of the resistor R14. The source of the transistor Q4 is connected to the charging management circuit 10. The drain of the transistor Q4 is connected to the second end of the resistor R14.

[0065] The temperature measurement switch circuit 15 includes transistors Q1 and Q2, and resistors R11 and R12. The source of the transistor Q1 is connected to the temperature measurement circuit 9. The source of the transistor Q2 is connected to the function input circuit 13. The drains of both the transistor Q1 and the transistor Q2 are connected to the first end of the resistor R11. The gates of both the transistor Q1 and the transistor Q2 are connected to the second end of the resistor R11 and the first end of the resistor R12. The second end of the resistor 12 is connected to the first end of the resistor R13 and the MCU processor 11.

[0066] In the detection circuit 14, the resistor R13 and the ground terminal GND form a voltage division structure. The gate of the transistor Q3 is connected to this voltage division point. When the control signal output by the MCU processor 11 passes through the resistor R13, it will significantly change the voltage of the gate of the transistor Q3. For example, when the control signal is at a high level, the gate voltage of the transistor Q3 increases, causing it to conduct. On the contrary, when the control signal is at a low level, the transistor Q3 is cut off. The drain of the transistor Q3 is connected to the charging switch circuit 16, and the change in its on or off state directly affects the working state of the charging switch circuit 16;

[0067] In the charging switch circuit 16, the resistor R14 and the transistor Q4 together form a control path. When the transistor Q3 conducts, current flows through the resistor R14, thereby changing the voltage of the gate of the transistor Q4. For example, when the transistor Q3 conducts, the voltage drop generated on the resistor R14 causes the gate voltage of the transistor Q4 to increase, resulting in the conduction of the transistor Q4; In this way, current can smoothly flow from the function input circuit 13 to the charging management circuit 10, realizing an efficient and stable charging function;

[0068] In the temperature measurement switch circuit 15, the transistors Q1 and Q2 are cleverly composed of an intelligent control loop through the resistors R11 and R12. When the control signal output by the MCU processor 11 passes through the resistors R12 and R11, it will accurately change the gate voltages of the transistors Q1 and Q2. For example, when the control signal causes the gate voltages of the transistors Q1 and Q2 to reach the conduction threshold, they conduct, thereby realizing the connection between the temperature measurement circuit 9 and the function input circuit 13; Specifically:

[0069] When the temperature sensing component 3 is connected, the function input circuit 13 detects a low voltage state. This low voltage signal is transmitted to the detection circuit 14, causing the transistor Q3 to turn off. At the same time, the MCU processor 11 outputs a corresponding control signal, which, through resistors R12 and R11, causes transistors Q1 and Q2 to turn on, thus closing the temperature measurement switch circuit 15 and enabling the temperature measurement circuit 9. At this time, the transistor Q4 in the charging switch circuit 16 is turned off because the gate voltage does not reach the conduction condition, disconnecting the charging management circuit 10 to ensure that the temperature measurement process is not interfered by the charging circuit;

[0070] When the power supply component 4 is connected, the function input circuit 13 presents a high voltage state. This high voltage signal causes the transistor Q3 to turn on. The conduction state of the transistor Q3, through the action of the resistor R14, causes the gate voltage of the transistor Q4 to rise and turn on, thus closing the charging switch circuit 16 and enabling the charging management circuit 10. At the same time, transistors Q1 and Q2 are turned off under the control of the MCU processor 11, disconnecting the temperature measurement circuit 9 to prevent the charging process from affecting the temperature measurement.

[0071] As described above, through the ingenious cooperation of multiple transistors and resistors, precise and flexible switching control of the charging and temperature measurement functions is achieved. Whether the temperature sensing component 3 or the power supply component 4 is connected, the circuit state can be quickly and accurately responded to and switched, ensuring that the device always operates in the correct mode.

[0072] In the embodiment of the present utility model, the MCU processor 11 has an AD_EN signal terminal to receive the analog signal transmitted by the function input circuit 13 through the AD_EN signal terminal and send an instruction to the function recognition and switching circuit 12 according to the analog signal through the AD_EN signal terminal.

[0073] The AD_EN signal terminal of the MCU processor 11 plays a key role. The function input circuit 13 transmits the analog signal it detects, whether it is the high voltage signal from the power supply component 4 or the low voltage signal from the temperature sensing component 3, to the AD_EN signal terminal;

[0074] After the AD_EN signal terminal receives these analog signals, the processing unit inside the MCU processor 11 will perform analog-to-digital conversion and analysis on them. According to the preset judgment logic and algorithm, the MCU processor 11 can accurately identify whether the connected component is the power supply component 4 or the temperature sensing component 3;

[0075] Once the recognition is completed, the MCU processor 11 sends corresponding instructions to the function recognition and switching circuit 12 through the AD_EN signal terminal. For example, when it is determined that the power supply component 4 is connected, an instruction is sent to turn on the charging switch circuit 16 and at the same time turn off the temperature measurement switch circuit 15; when it is determined that the temperature sensing component 3 is connected, the opposite instruction is sent, turning on the temperature measurement switch circuit 15 and turning off the charging switch circuit 16.

[0076] In the embodiment of the present utility model, a temperature sensing element 17 electrically connected to the second power connection interface 6 is provided inside or on the temperature sensing component 3, and the temperature sensing element 17 is an NTC.

[0077] In this temperature sensing structure for mother and baby, a temperature sensing element 17 electrically connected to the second power connection interface 6 is provided inside or on the temperature sensing component 3, and the temperature sensing element 17 is an NTC (negative temperature coefficient thermistor). The resistance value of the NTC will change significantly with the change of temperature. When the temperature rises, the resistance value of the NTC will drop rapidly; on the contrary, when the temperature drops, its resistance value will increase.

[0078] When the temperature sensing component 3 is connected to the circuit, through the second power connection interface 6, the NTC forms a path with the circuit, and the current in the circuit will be affected by the change of the NTC resistance value. The MCU processor 11 can calculate the resistance value of the NTC by detecting the change of the electrical parameters related to the NTC in the detection circuit 14, such as voltage, current, etc., and then determine the current temperature value according to the resistance-temperature characteristic curve of the NTC.

[0079] Among them, the NTC can also be a chip. This kind of chip usually integrates functions such as induction, amplification, and conversion. It is connected to the second power connection interface 6 and transmits the sensed temperature information to the circuit in the form of digital or analog signals. Specifically, a temperature sensing chip with suitable performance is selected and connected and programmed to the circuit according to the interface and communication protocol of the chip. At this time, attention needs to be paid to the stability of the power supply and reference voltage of the chip to ensure the accuracy of the measurement.

[0080] In the embodiment of the present utility model, a battery pack 18 is provided inside the control component 1. In the working mode of the temperature measurement circuit 9, the battery pack 18 provides power for the main circuit power supply module 7, and in the working mode of the charging management circuit 10, the battery pack 18 is charged.

[0081] As described above, in this temperature sensing structure for mother and baby, a battery pack 18 is provided inside the control component 1. When in the working mode of the temperature measurement circuit 9, the battery pack 18 serves as a power source and delivers electrical energy to the temperature measurement circuit 9 through the main circuit power supply module 7, enabling the temperature sensing element 17 (such as NTC) to work normally, sense the temperature and transmit relevant signals to the temperature measurement circuit 9 for processing and display.

[0082] When the charging management circuit 10 is in the working mode, the external power supply component 4 transmits electric energy to the control component 1 through the connection of the first power connection interface 5 and the second power connection interface 6. At this time, the charging management circuit 10 takes over the power transmission and charges the battery pack 18, stores the electric energy in the battery pack 18, and provides sufficient energy reserve for subsequent temperature measurement work or other operations.

[0083] In summary, in this temperature-sensing structure for mother and baby, first, the function input circuit 13 is responsible for receiving electrical signals from the power supply component 4 or the temperature-sensing component 3. When the connected component is the power supply component 4, since it usually has a relatively high output voltage, this high voltage will generate a corresponding high-level signal in the function input circuit 13. When the connected component is the temperature-sensing component 3, due to its own characteristics, it generally generates a relatively low voltage signal, that is, a low-level signal, in the function input circuit 13.

[0084] The resistor R13 in the detection circuit 14 and the ground terminal GND form a voltage-dividing structure. The gate of the transistor Q3 is connected to the voltage-dividing point. When a high-level signal (indicating that the power supply component 4 is connected) is transmitted from the function input circuit 13, through the voltage-dividing effect, the gate of the transistor Q3 obtains a high enough voltage to make it conduct. At the same time, in the temperature measurement switch circuit 15, the gate voltages of the transistors Q1 and Q2 are cut off due to the voltage-dividing change, and the temperature measurement circuit 9 is disconnected.

[0085] On the contrary, when a low-level signal (indicating that the temperature-sensing component 3 is connected) is transmitted from the function input circuit 13, the gate voltage of the transistor Q3 is not high enough to make it conduct and is in the cut-off state. At this time, the AD_EN signal terminal of the MCU processor 11 plays a role. The AD_EN signal terminal receives the low-level analog signal transmitted from the function input circuit 13. The processing unit inside the MCU processor analyzes and processes it, and outputs a control signal through the AD_EN signal terminal. Through the resistors R12 and R11, the transistors Q1 and Q2 are made to conduct, thereby closing the temperature measurement switch circuit 15 and enabling the temperature measurement function.

[0086] The combination of the transistor Q4 and the resistor R14 in the charging switch circuit 16 determines whether to conduct according to the conducting or cut-off state of the transistor Q3 and the voltage level of the function input circuit 13, thereby controlling the enabling or disabling of the charging management circuit 10.

[0087] In short, by receiving different voltage signals generated by different components through the function input circuit 13, and through the collaborative action of transistors and resistors in the detection circuit 14, the temperature measurement switch circuit 15, and the charging switch circuit 16, and the AD_EN signal terminal of the MCU processor 11 receiving and processing analog signals and sending control instructions, the hardware identification of the power supply component 4 and the temperature-sensing component 3 and the switching control of the corresponding functional circuits are realized.

[0088] In one embodiment, when the battery pack 18 supplies electrical energy to the circuit, the output voltage is distributed in the circuit and has different effects. For transistors Q1 and Q2, since the line resistances leading to their gates in the circuit are relatively small, or there is a specific voltage-dividing structure that is conducive to their conduction. For example, resistors R1 and R2 are respectively connected to the gates of Q1 and Q2. After reasonable voltage division, the voltage output by the battery pack 18 can easily make the gate voltages of Q1 and Q2 reach the conduction threshold, thereby successfully turning on Q1 and Q2 and realizing corresponding circuit functions, such as enabling the temperature measurement circuit 9.

[0089] However, for transistors Q3 and Q4, the situation is different. There may be relatively large resistances in the lines leading to the gates of Q3 and Q4. For example, a resistor R3 with a relatively large resistance value is connected in series in the line leading to the gate of Q3, which results in a large voltage drop during voltage transmission. Or there is a voltage-dividing structure that is not conducive to their conduction in the circuit, such that the voltage values reaching the gates of Q3 and Q4 after passing through these lines and components are much lower than their conduction thresholds. Therefore, in this case, although the battery pack 18 is powering the circuit, the insufficient voltage causes Q3 and Q4 to remain in the cut-off state, thereby blocking certain circuit paths, such as the charging management circuit 10 cannot be enabled.

[0090] Structurally, it includes a control component 1 and a temperature sensing component 3. One end of the control component 1 opposite to the temperature sensing component 3 forms a first connection end, and one end of the temperature sensing component 3 opposite to the control component 1 forms a second connection end. The first connection end and the second connection end are detachably connected and matched; a first power connection interface 5 is provided on the first connection end, and a second power connection interface 6 is provided on the second connection end to achieve electrical connection through the contact and cooperation of the first power connection interface 5 and the second power connection interface 6; wherein, a connection protrusion is formed on the first connection end, and a connection groove is formed on the second connection end, and the connection protrusion and the connection groove are in interference fit.

[0091] The shapes and sizes of the connection protrusion and the connection groove are carefully designed such that the protrusion can be tightly inserted into the groove, generating a certain frictional force and extrusion force through the interference fit, thereby preventing accidental loosening or detachment during use; the design of the connection protrusion and the connection groove can play a role in directional connection. When the user connects the control component 1 and the temperature sensing component 3, they only need to align the protrusion with the groove and insert it, ensuring the accuracy and convenience of the connection; due to the tight fit of the connection protrusion and the connection groove, it also helps to ensure good contact between the first power connection interface 5 and the second power connection interface 6, further enhancing the stability of the electrical connection and ensuring that the temperature sensing element 17 can work properly and transmit accurate temperature data to the main circuit power supply module 7.

[0092] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model.

Claims

1. A temperature-sensing structure for mothers and infants with a charging function, characterized in that, It includes a control component and a functional component detachably connected to the control component. The functional component is a temperature sensing component and a power supply component. The control component has a first power connection interface, and the functional component has a second power connection interface, and electrical connection is achieved through the contact and cooperation of the first power connection interface and the second power connection interface; Inside the control component, there is a main circuit power supply module electrically connected to the first power connection interface. The main circuit power supply module includes a function identification and switching unit, a temperature measurement circuit and a charging management circuit respectively electrically connected to the function identification and switching unit. The function identification and switching unit is used to determine whether the current mode is the charging management circuit working mode or the temperature measurement circuit working mode, so as to use the first power connection interface as an input terminal to connect to the power supply component to achieve charging, or use the first power connection interface as an output terminal to connect to the temperature sensing component to achieve temperature measurement.

2. The temperature sensing structure for mother and baby with charging function according to claim 1, wherein The function identification and switching unit includes an MCU processor and a function identification and switching circuit electrically connected thereto. The main circuit power supply module also includes a function input circuit corresponding to the first power connection interface, where: The function input circuit is used to input a signal about enabling the temperature sensing component or the power supply component to the MCU processor. The MCU processor sends an instruction to the function identification and switching circuit according to this signal. The function identification and switching circuit is used to determine and switch to the temperature measurement circuit working mode to achieve temperature measurement, or switch to the charging management circuit working mode to achieve charging according to the received instruction.

3. The temperature sensing structure for mother and baby with charging function according to claim 2, characterized in that, The identification and switching circuit includes a detection circuit, a temperature measurement switch circuit and a charging switch circuit respectively electrically connected to the detection circuit. The detection circuit combines with the MCU processor to receive the analog signal transmitted by the function input circuit, and according to this analog signal, controls the enabling or disconnection of the temperature measurement circuit through the temperature measurement switch circuit, and controls the enabling or disconnection of the charging management circuit through the charging switch circuit.

4. The temperature sensing structure for mother and baby with charging function according to claim 3, characterized in that, The analog signal is the real-time voltage detection of the function input circuit, where: When the connected functional component is a power supply component, the real-time voltage of the function input circuit is in a high voltage state, the charging switch circuit is closed, and the charging management circuit is enabled. The temperature measurement switch circuit is disconnected, and the temperature measurement circuit is disconnected; When the connected functional component is a temperature sensing component, the real-time voltage of the function input circuit is in a low voltage state, the temperature measurement switch circuit is closed, and the temperature measurement circuit is enabled. The charging switch circuit is disconnected, and the charging management circuit is disconnected.

5. The thermosensitive structure for mother and baby with a charging function according to claim 3, wherein, The detection circuit includes a transistor Q3, a resistor R13 and a ground terminal GND. Among them, the first end of the resistor R13 is connected between the temperature measurement switch circuit and the MCU processor, the second end of the resistor R13 is connected to the ground terminal GND, the gate of the transistor Q3 is connected to the first end of the resistor R13, the source of the transistor Q3 is connected to the second end of the resistor R13, and the drain of the transistor Q3 is connected to the charging switch circuit.

6. The thermosensitive structure for mother and baby with a charging function according to claim 5, wherein The charging switch circuit includes a transistor Q4 and a resistor R14. The first end of the resistor R14 is connected to the drain of the transistor Q3. The second end of the resistor R14 is connected to the function input circuit. The gate of the transistor Q4 is connected to the first end of the resistor R14. The source of the transistor Q4 is connected to the charging management circuit. The drain of the transistor Q4 is connected to the second end of the resistor R14.

7. The thermosensitive structure for mother and baby with a charging function according to claim 6, characterized in that, The temperature measurement switch circuit includes transistors Q1 and Q2, and resistors R11 and R12. The source of the transistor Q1 is connected to the temperature measurement circuit. The source of the transistor Q2 is connected to the function input circuit. The drains of the transistors Q1 and Q2 are both connected to the first end of the resistor R11. The gates of the transistors Q1 and Q2 are both connected to the second end of the resistor R11 and the first end of the resistor R12. The second end of the resistor 12 is connected to the first end of the resistor R13 and the MCU processor.

8. A temperature sensing structure for mother and baby with a charging function according to claim 3, characterized in that, The MCU processor has an AD_EN signal terminal to receive the analog signal transmitted by the function input circuit through the AD_EN signal terminal, and to send an instruction to the function recognition and switching circuit according to the analog signal through the AD_EN signal terminal.

9. A temperature sensing structure for mother and baby with a charging function according to any one of claims 1-8, characterized in that, A temperature sensing element electrically connected to the second power connection interface is provided inside or on the temperature sensing component, and the temperature sensing element is an NTC.

10. A temperature sensing structure for mother and baby with a charging function according to any one of claims 1-8, characterized in that, A battery pack is provided inside the control component. In the working mode of the temperature measurement circuit, the battery pack provides power for the main circuit power module. In the working mode of the charging management circuit, the battery pack is charged.

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