Maintenance-free temperature measuring and alarming circuit and maintenance-free spoon
By introducing a high-temperature resistant detector and a maintenance-free temperature alarm circuit with a thermistor into the infant spoon, the problem of damage to the electronic handle during sterilization is solved, enabling real-time detection of sterilization temperature and safety alarms, and improving high-temperature resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN CHIPSUN SCIENCE & TECHNOLOGY CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-14
AI Technical Summary
The electronic handles of existing infant spoons are easily damaged by high temperatures during the sterilization process, resulting in incomplete sterilization and posing a safety hazard.
The maintenance-free temperature alarm circuit, composed of a high-temperature resistant detector and a temperature-sensing thermistor, uses high-temperature resistant components to achieve real-time detection and alarm of the disinfection temperature, ensuring the stability and safety of the circuit in high-temperature environments.
Real-time temperature monitoring during the sterilization process prevents damage to circuit components, improves high-temperature resistance, and ensures the safety and reliability of infant spoons.
Smart Images
Figure CN224499703U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of tableware, in particular to a maintenance-free temperature measurement alarm circuit and a maintenance-free spoon. BACKGROUND
[0002] The spoon is a common tableware in the catering industry, which is used in catering stores on the market. Among them, the spoon suitable for infants is used to avoid the high temperature of food from scalding infants. The feeder usually adopts the method of blowing to cool the food. This method has the following defects: the health problem cannot be guaranteed; the feeding period of the infant is long; the feeder is not the only designated one; even if the feeder is the only one, it cannot be guaranteed to be healthy during the feeding period; therefore, the common infant spoon is a detachable spoon, the handle and the food containing part are connected by a buckle or a locking pin structure, and various electronic components such as a fan, a battery, a switch, etc. are arranged in the handle to blow and cool the food.
[0003] However, the disinfection of the spoon is usually performed after the spoon is washed, and only the food containing part can be placed in the disinfection cabinet for disinfection. The handle is prone to be damaged due to high temperature in the disinfection cabinet because part of the electronic components are not resistant to high temperature, which may even cause explosion, so the handle cannot be disinfected. CONTENT OF THE UTILITY MODEL
[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a maintenance-free temperature measurement alarm circuit and a maintenance-free spoon with high temperature resistance.
[0005] The purpose of the present disclosure is achieved by the following technical solutions:
[0006] A maintenance-free temperature measurement alarm circuit comprises a power supply module and a temperature measurement module. The power supply module comprises a power supply battery and a first high-temperature-resistant fuse, the positive electrode of the power supply battery is connected with the first end of the first high-temperature-resistant fuse, and the negative electrode of the power supply battery is grounded. The temperature measurement module comprises a high-temperature-resistant detector, a temperature measurement pull-up resistor and a temperature measurement thermistor, the power supply end of the high-temperature-resistant detector is connected with the second end of the first high-temperature-resistant fuse; the first end of the temperature measurement pull-up resistor is used to be connected with a reference power supply, the second end of the temperature measurement pull-up resistor is connected with the first end of the temperature measurement thermistor, the second end of the temperature measurement thermistor is grounded, and the temperature measurement sampling end of the high-temperature-resistant detector is connected with the first end of the temperature measurement thermistor; and the alarm end of the high-temperature-resistant detector is used to output a temperature measurement alarm signal.
[0007] In one embodiment, the power supply module further comprises a first capacitor, the first end of the first capacitor is connected with the first end of the first high-temperature-resistant fuse, and the second end of the first capacitor is grounded.
[0008] In one of the embodiments, the power supply module further comprises a second capacitor, a first end of the second capacitor is connected with the first end of the first high-temperature-resistant fuse, and a second end of the second capacitor is grounded.
[0009] In one of the embodiments, a capacitance of the second capacitor is less than a capacitance of the first capacitor.
[0010] In one of the embodiments, the power supply module further comprises a second high-temperature-resistant fuse, a negative pole of the power supply battery is connected with a first end of the second high-temperature-resistant fuse, and a second end of the second high-temperature-resistant fuse is connected with the common ground end of the high-temperature-resistant detector.
[0011] In one of the embodiments, the temperature measurement module further comprises a third capacitor, a first end of the third capacitor is connected with the first end of the temperature measurement thermistor, and a second end of the third capacitor is grounded.
[0012] In one of the embodiments, the temperature measurement thermistor is an NTC resistor.
[0013] In one of the embodiments, the temperature measurement pull-up resistor is an adjustable resistor.
[0014] In one of the embodiments, the temperature measurement module further comprises a first alarm resistor, a first alarm LED, a second alarm resistor, a second alarm LED, a third alarm resistor and a third alarm LED, a first end of the first alarm resistor is connected with the first alarm output end of the high-temperature-resistant detector, a second end of the first alarm resistor is connected with a positive pole of the first alarm LED, and a negative pole of the first alarm LED is grounded; a first end of the second alarm resistor is connected with the second alarm output end of the high-temperature-resistant detector, a second end of the second alarm resistor is connected with a positive pole of the second alarm LED, and a negative pole of the second alarm LED is grounded; a first end of the third alarm resistor is connected with the third alarm output end of the high-temperature-resistant detector, a second end of the third alarm resistor is connected with a positive pole of the third alarm LED, and a negative pole of the third alarm LED is grounded.
[0015] A maintenance-free spoon, comprising the maintenance-free temperature measurement alarm circuit according to any one of the embodiments.
[0016] Compared with the prior art, the present disclosure has at least the following advantages:
[0017] When disinfecting, the temperature measurement thermistor collects the disinfection temperature, and the high-temperature-resistant detector detects and judges the high and low of the disinfection temperature, so as to timely send a temperature measurement alarm signal, ensure real-time detection of the disinfection temperature during disinfection, and the components in the circuit are high-temperature-resistant components, avoiding damage and improving the high-temperature-resistant performance. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a circuit diagram of a maintenance-free temperature alarm circuit in one embodiment. Detailed Implementation
[0020] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.
[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0023] This disclosure relates to a maintenance-free temperature measurement alarm circuit. In one embodiment, the maintenance-free temperature measurement alarm circuit includes a power supply module and a temperature measurement module; the power supply module includes a power supply battery and a first high-temperature resistant fuse, the positive terminal of the power supply battery is connected to a first terminal of the first high-temperature resistant fuse, and the negative terminal of the power supply battery is grounded; the temperature measurement module includes a high-temperature resistant detector, a temperature-sensing pull-up resistor, and a temperature-sensing thermistor, the power supply terminal of the high-temperature resistant detector is connected to a second terminal of the first high-temperature resistant fuse; the first terminal of the temperature-sensing pull-up resistor is used to connect to a reference power supply, the second terminal of the temperature-sensing pull-up resistor is connected to a first terminal of the temperature-sensing thermistor, the second terminal of the temperature-sensing thermistor is grounded, the temperature-sensing sampling terminal of the high-temperature resistant detector is connected to the first terminal of the temperature-sensing thermistor; the alarm terminal of the high-temperature resistant detector is used to output a temperature measurement alarm signal. During disinfection, the temperature-sensing thermistor collects the disinfection temperature, and the high-temperature detector detects and judges whether the disinfection temperature is high or low, so as to issue a temperature alarm signal in a timely manner. This ensures real-time detection of the disinfection temperature during the disinfection process. Moreover, all components in the circuit are high-temperature resistant, which avoids damage and improves its high-temperature resistance.
[0024] Please see Figure 1 This is a circuit diagram of a maintenance-free temperature alarm circuit according to an embodiment of the present disclosure.
[0025] An embodiment of a maintenance-free temperature alarm circuit 10 includes a power supply module 100 and a temperature measurement module 200. The power supply module 100 includes a power supply battery BAT and a first high-temperature resistant fuse F1. The positive terminal of the power supply battery BAT is connected to the first terminal of the first high-temperature resistant fuse F1, and the negative terminal of the power supply battery BAT is grounded. The temperature measurement module 200 includes a high-temperature resistant detector U1, a temperature-sensing pull-up resistor R5, and a temperature-sensing thermistor RT1. The power supply terminal of the high-temperature resistant detector U1 is connected to the second terminal of the first high-temperature resistant fuse F1. The first terminal of the temperature-sensing pull-up resistor R5 is connected to a reference power supply, and the second terminal of the temperature-sensing pull-up resistor R5 is connected to the first terminal of the temperature-sensing thermistor RT1. The second terminal of the temperature-sensing thermistor RT1 is grounded, and the temperature sampling terminal of the high-temperature resistant detector U1 is connected to the first terminal of the temperature-sensing thermistor RT1. The alarm terminal of the high-temperature resistant detector U1 is used to output a temperature alarm signal.
[0026] In this embodiment, during disinfection, the temperature-sensing thermistor RT1 collects the disinfection temperature, and the high-temperature detector U1 detects and judges the level of the disinfection temperature so as to issue a temperature alarm signal in a timely manner, ensuring real-time detection of the disinfection temperature during the disinfection process. Moreover, all components in the circuit are high-temperature resistant components, avoiding damage and improving their high-temperature resistance.
[0027] In another embodiment, the power supply battery BAT is a lithium iron phosphate battery, and the high temperature resistance of each component in the maintenance-free temperature measurement and alarm circuit is greater than 150°C.
[0028] In another embodiment, the high-temperature detector U1 is model N32G003F5Q7.
[0029] In one embodiment, referring to the figure, the power supply module 100 further includes a first capacitor C1. The first terminal of the first capacitor C1 is connected to the first terminal of the first high-temperature fuse F1, and the second terminal of the first capacitor C1 is grounded. In this embodiment, the first capacitor C1 is connected to the first terminal of the first high-temperature fuse F1. The first capacitor C1 serves as an isolation capacitor between the first high-temperature fuse F1 and the high-temperature detector U1. The first capacitor C1 filters the current signal flowing through the first high-temperature fuse F1, ensuring that the power supply terminal of the high-temperature detector U1 receives a stable power supply voltage, thus ensuring the stable operation of the high-temperature detector U1.
[0030] Furthermore, the power supply module 100 also includes a second capacitor C2. The first terminal of the second capacitor C2 is connected to the first terminal of the first high-temperature fuse F1, and the second terminal of the second capacitor C2 is grounded. In this embodiment, the second capacitor C2 is also connected to the first terminal of the first high-temperature fuse F1. Specifically, the second capacitor C2 is connected in parallel with the first capacitor C1. The second capacitor C2 and the first capacitor C1 together perform multi-stage filtering on the current signal of the first high-temperature fuse F1, further improving the stability of the power supply voltage received at the power supply terminal of the high-temperature detector U1. Moreover, in order to achieve multi-stage filtering, the capacitance value of the second capacitor C2 is smaller than the capacitance value of the first capacitor C1, so as to achieve dual filtering of low-frequency and high-frequency interference signals.
[0031] In one embodiment, referring to the figure, the power supply module 100 further includes a second high-temperature resistant fuse F2. The negative terminal of the power supply battery BAT is connected to the first terminal of the second high-temperature resistant fuse F2, and the second terminal of the second high-temperature resistant fuse F2 is connected to the common ground terminal of the high-temperature resistant detector U1. In this embodiment, the second high-temperature resistant fuse F2 is connected in series with the negative terminal of the power supply battery BAT. The second high-temperature resistant fuse F2 protects against overcurrent on the negative terminal of the power supply battery BAT, providing dual protection for the power supply battery BAT together with the first high-temperature resistant fuse F1, thereby preventing damage to the high-temperature resistant detector U1 when the power supply battery BAT experiences a power supply abnormality.
[0032] In another embodiment, the high-temperature resistant fuse F1 and the second high-temperature resistant fuse F2 both have a high temperature resistance greater than 150°C.
[0033] In one embodiment, referring to the figure, the temperature measurement module 200 further includes a third capacitor C4. The first terminal of the third capacitor C4 is connected to the first terminal of the temperature-sensing thermistor RT1, and the second terminal of the third capacitor C4 is grounded. In this embodiment, the third capacitor C4 is connected to the temperature-sensing thermistor RT1. Specifically, the temperature-sensing thermistor RT1 is an NTC resistor, and the third capacitor C4 is connected in parallel with the temperature-sensing thermistor RT1. The third capacitor C4 filters the voltage change signal on the temperature-sensing thermistor RT1 to ensure that the signal collected by the temperature sampling terminal of the high-temperature detector U1 is stable, thereby making the detection of the ambient temperature by the high-temperature detector U1 more accurate and facilitating accurate detection of the disinfection temperature of the maintenance-free temperature alarm circuit.
[0034] In another embodiment, the temperature-sensing pull-up resistor R5 is an adjustable resistor, meaning its resistance value can vary. The temperature-sensing pull-up resistor R5 and the temperature-sensing thermistor RT1 form a voltage divider sampling circuit. The voltage across the temperature-sensing thermistor RT1 is related to the ambient temperature. By adjusting the resistance value of the temperature-sensing pull-up resistor R5, the resistance ratio between R5 and RT1 can be changed, thereby facilitating more accurate sampling of the disinfection temperature of the maintenance-free temperature alarm circuit.
[0035] In one embodiment, referring to the figure, the temperature measuring module 200 further includes a first alarm resistor R1, a first alarm LED D1, a second alarm resistor R2, a second alarm LED D2, a third alarm resistor R3, and a third alarm LED D3. The first terminal of the first alarm resistor R1 is connected to the first alarm output terminal of the high-temperature detector U1, and the second terminal of the first alarm resistor R1 is connected to the positive terminal of the first alarm LED D1, with the negative terminal of the first alarm LED D1 grounded. The first terminal of the second alarm resistor R2 is connected to the second alarm output terminal of the high-temperature detector U1, and the second terminal of the second alarm resistor R2 is connected to the positive terminal of the second alarm LED D2, with the negative terminal of the second alarm LED D2 grounded. The first terminal of the third alarm resistor R3 is connected to the third alarm output terminal of the high-temperature detector U1, and the second terminal of the third alarm resistor R3 is connected to the positive terminal of the third alarm LED D3, with the negative terminal of the third alarm LED D3 grounded. In this embodiment, the first alarm resistor R1 and the first alarm LED D1 are connected in series on the first alarm output terminal of the high-temperature detector U1. The voltage output from the first alarm output terminal of the high-temperature detector U1 is applied to the first alarm resistor R1 and the first alarm LED D1. The first alarm resistor R1 limits the current output from the first alarm output terminal of the high-temperature detector U1 to prevent the first alarm LED D1 from breaking down. Moreover, the first alarm output terminal of the high-temperature detector U1 serves as a safety level output terminal for the disinfection temperature. When the disinfection temperature is normal, the voltage output from the first alarm output terminal of the high-temperature detector U1 turns on the first alarm LED D1, causing the first alarm LED D1 to light up, for example, the first alarm LED D1 emits green light.
[0036] The second alarm resistor R2 and the second alarm LED D2 are connected in series on the second alarm output terminal of the high-temperature detector U1. The voltage output from the second alarm output terminal of the high-temperature detector U1 is applied to the second alarm resistor R2 and the second alarm LED D2. The second alarm resistor R2 limits the current output from the second alarm output terminal of the high-temperature detector U1 to prevent the second alarm LED D2 from breaking down. Moreover, the second alarm output terminal of the high-temperature detector U1 serves as a safety level output terminal for the disinfection temperature. When the disinfection temperature is too high, the voltage output from the second alarm output terminal of the high-temperature detector U1 turns on the second alarm LED D2, causing the second alarm LED D2 to light up. For example, the second alarm LED D2 emits red light.
[0037] The third alarm resistor R3 and the third alarm LED D3 are connected in series on the third alarm output terminal of the high-temperature detector U1. The voltage output from the third alarm output terminal of the high-temperature detector U1 is applied to the third alarm resistor R3 and the third alarm LED D3. The third alarm resistor R3 limits the current output from the third alarm output terminal of the high-temperature detector U1 to prevent the third alarm LED D3 from breaking down. Moreover, the third alarm output terminal of the high-temperature detector U1 serves as a safety level output terminal for the disinfection temperature. When the disinfection temperature is at the critical point between the safe temperature and the excessively high temperature, the voltage output from the third alarm output terminal of the high-temperature detector U1 turns on the third alarm LED D3, causing the third alarm LED D3 to light up, for example, the third alarm LED D3 emits blue light.
[0038] In this way, the temperature of the disinfection environment can be determined by the light output of different LEDs and the color of the light they display.
[0039] In one embodiment, this disclosure also provides a maintenance-free spoon, including the maintenance-free temperature alarm circuit described in any of the above embodiments. In this embodiment, the maintenance-free temperature alarm circuit includes a power supply module and a temperature measurement module; the power supply module includes a power supply battery and a first high-temperature resistant fuse, the positive terminal of the power supply battery is connected to the first terminal of the first high-temperature resistant fuse, and the negative terminal of the power supply battery is grounded; the temperature measurement module includes a high-temperature resistant detector, a temperature-sensing pull-up resistor, and a temperature-sensing thermistor, the power supply terminal of the high-temperature resistant detector is connected to the second terminal of the first high-temperature resistant fuse; the first terminal of the temperature-sensing pull-up resistor is used to connect to a reference power supply, the second terminal of the temperature-sensing pull-up resistor is connected to the first terminal of the temperature-sensing thermistor, the second terminal of the temperature-sensing thermistor is grounded, the temperature-sensing sampling terminal of the high-temperature resistant detector is connected to the first terminal of the temperature-sensing thermistor; the alarm terminal of the high-temperature resistant detector is used to output a temperature alarm signal. During disinfection, the temperature-sensing thermistor collects the disinfection temperature, and the high-temperature detector detects and judges whether the disinfection temperature is high or low, so as to issue a temperature alarm signal in a timely manner. This ensures real-time detection of the disinfection temperature during the disinfection process. Moreover, all components in the circuit are high-temperature resistant, which avoids damage and improves its high-temperature resistance.
[0040] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent disclosure. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent disclosure should be determined by the appended claims.
Claims
1. A maintenance-free temperature alarm circuit, characterized in that, include: The power supply module includes a power supply battery and a first high-temperature resistant fuse. The positive terminal of the power supply battery is connected to the first terminal of the first high-temperature resistant fuse, and the negative terminal of the power supply battery is grounded. The temperature measurement module includes a high-temperature resistant detector, a temperature-sensing pull-up resistor, and a temperature-sensing thermistor. The power supply terminal of the high-temperature resistant detector is connected to the second terminal of the first high-temperature resistant fuse. The first terminal of the temperature-sensing pull-up resistor is connected to a reference power supply, and the second terminal of the pull-up resistor is connected to the first terminal of the temperature-sensing thermistor, which is grounded. The temperature sampling terminal of the high-temperature resistant detector is connected to the first terminal of the temperature-sensing thermistor. The alarm terminal of the high-temperature resistant detector is used to output a temperature alarm signal.
2. The maintenance-free temperature alarm circuit according to claim 1, characterized in that, The power supply module also includes a first capacitor, the first end of which is connected to the first end of the first high-temperature fuse, and the second end of the first capacitor is grounded.
3. The maintenance-free temperature alarm circuit according to claim 2, characterized in that, The power supply module also includes a second capacitor, the first end of which is connected to the first end of the first high-temperature fuse, and the second end of which is grounded.
4. The maintenance-free temperature alarm circuit according to claim 3, characterized in that, The capacitance of the second capacitor is less than that of the first capacitor.
5. The maintenance-free temperature alarm circuit according to claim 1, characterized in that, The power supply module also includes a second high-temperature resistant fuse. The negative terminal of the power supply battery is connected to the first terminal of the second high-temperature resistant fuse, and the second terminal of the second high-temperature resistant fuse is connected to the common ground terminal of the high-temperature resistant detector.
6. The maintenance-free temperature alarm circuit according to claim 1, characterized in that, The temperature measurement module also includes a third capacitor, the first end of which is connected to the first end of the temperature measuring thermistor, and the second end of which is grounded.
7. The maintenance-free temperature alarm circuit according to claim 1, characterized in that, The temperature-sensing thermistor is an NTC resistor.
8. The maintenance-free temperature alarm circuit according to claim 1, characterized in that, The temperature-sensing pull-up resistor is an adjustable resistor.
9. The maintenance-free temperature alarm circuit according to claim 1, characterized in that, The temperature measurement module further includes a first alarm resistor, a first alarm LED, a second alarm resistor, a second alarm LED, a third alarm resistor, and a third alarm LED. The first terminal of the first alarm resistor is connected to the first alarm output terminal of the high-temperature detector, and the second terminal of the first alarm resistor is connected to the positive terminal of the first alarm LED, with the negative terminal of the first alarm LED grounded. The first terminal of the second alarm resistor is connected to the second alarm output terminal of the high-temperature detector, and the second terminal of the second alarm resistor is connected to the positive terminal of the second alarm LED, with the negative terminal of the second alarm LED grounded. The first terminal of the third alarm resistor is connected to the third alarm output terminal of the high-temperature detector, and the second terminal of the third alarm resistor is connected to the positive terminal of the third alarm LED, with the negative terminal of the third alarm LED grounded.
10. A maintenance-free spoon, characterized in that, Includes the maintenance-free temperature measurement and alarm circuit as described in any one of claims 1 to 9.