Efficient and energy-saving electronic scale

Abstract

The utility model discloses a high-efficiency energy-saving electronic scale, comprising a microcontroller, the microcontroller comprises a main frequency switching module capable of adjusting the main frequency of the microcontroller, so that the microcontroller at least has a first main frequency and a second main frequency; the power supply voltage of the resistance strain gauge is a first weighing voltage corresponding to the first main frequency during the weighing period, and is a second weighing voltage corresponding to the second main frequency during the non-weighing period; the digital-to-analog converter is used for converting the weight signal into a digital signal and outputting the digital signal through the display module; the display module is used for outputting data for a user to read; the power supply is used for providing stable power; the power supply is connected with the power supply input end of the microcontroller, the digital-to-analog converter is connected with the resistance strain gauge and the microcontroller, and the microcontroller is further connected with the display module. The high-efficiency and energy-saving electronic scale can reduce power consumption, prolong the service life of the battery and prolong the single-time use time of the electronic scale.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic scale technical field, concretely relates to a kind of high-efficiency energy-saving electronic scale. BACKGROUND

[0002] For battery-powered portable electronic scale, power consumption problem is particularly prominent. Portable electronic scale is widely used in supermarket, logistics, agricultural market and other scenes, and its lightness and mobility provide great convenience for users. However, due to the dependence on battery power, frequent replacement of battery becomes a big problem during long-term use, which not only increases maintenance cost, but also causes pressure on the environment. Therefore, reducing power consumption and improving endurance capability become the key direction of the development of portable electronic scale technology. SUMMARY

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a kind of high-efficiency energy-saving electronic scale, which can reduce power consumption, prolong battery life and increase the single use time of electronic scale.

[0004] Technical scheme: the utility model discloses a kind of high-efficiency energy-saving electronic scale, comprising:

[0005] Microcontroller, the microcontroller includes the main frequency switching module that can adjust the main frequency of the microcontroller, so that the microcontroller has at least first main frequency and second main frequency;

[0006] Resistance strain gauge, the power supply voltage of the resistance strain gauge is first weighing voltage corresponding to the first main frequency during weighing, and is second weighing voltage corresponding to the second main frequency during non-weighing, wherein the first weighing voltage is greater than the second weighing voltage;

[0007] Digital-to-analog converter, the digital-to-analog converter is used to convert weight signal into digital signal output through the display module;Display module, the display module is used to output data for user to read;

[0008] Power supply, the power supply is used to provide stable power supply;

[0009] The power supply connects the power input end of the microcontroller, one end of the digital-to-analog converter is connected with the resistance strain gauge, the other end of the digital-to-analog converter is connected with the microcontroller, and the microcontroller is further connected with the display module.

[0010] Further, it further includes auxiliary circuit, which is connected between the resistance strain gauge and the digital-to-analog converter.

[0011] Further, during non-weighing, the digital-to-analog converter samples at least three times every two seconds.

[0012] Further, the power supply is also integrated with a charge-discharge management module, an overvoltage protection module and a temperature monitoring module.

[0013] Further, the microcontroller monitors the numerical value change of the digital-analog converter, when the change amount exceeds the change threshold, the voltage of the resistance strain gauge is switched to a first weighing voltage, and the electronic scale is switched to a weighing mode.

[0014] Further, the microcontroller monitors the numerical value change of the digital-analog converter, when the change amount is lower than the change threshold, the voltage of the resistance strain gauge is switched to a second weighing voltage, and the electronic scale is switched to a non-weighing mode.

[0015] Further, the microcontroller is also provided with a time threshold, during the weighing process, when the weighing time exceeds the time threshold, the main frequency of the microcontroller is switched to a second main frequency, and correspondingly, the voltage of the resistance strain gauge is switched to a second weighing voltage.

[0016] The electronic scale has the advantages that:

[0017] (1) Through the main frequency switching module of the microcontroller, the electronic scale adopts a first main frequency during weighing to ensure high-speed data processing, improve response speed and weighing accuracy, and during non-weighing, the main frequency is switched to a second main frequency to reduce unnecessary power consumption, which can greatly reduce energy consumption while maintaining performance, prolong the service life of the battery, and prolong the single use time of the electronic scale;

[0018] (2) The voltage dynamic adjustment of the resistance strain gauge ensures the high-precision requirement during weighing, and significantly reduces power consumption when idle, the electronic scale can automatically switch to the corresponding voltage according to the use condition, reduces power consumption, and further prolongs the endurance time of the power supply;

[0019] (3) The power supply is integrated with a charge-discharge management module, an overvoltage protection module and a temperature monitoring module, which effectively ensures the operation safety of the electronic scale, avoids overvoltage damage and overheating failure, prolongs the service life of the electronic scale, and enhances the stability and reliability of the equipment in complex environments. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are for illustrative purposes only, and are not intended to limit the scope of the present application in any way. In addition, the shapes and proportions of the components in the drawings are only illustrative, and are used to help understand the present application, and are not specific limitations on the shapes and proportions of the components of the present application. Those skilled in the art can select various possible shapes and proportions to implement the present application according to specific circumstances under the guidance of the present application. In the drawings:

[0021] Figure 1The utility model discloses a high -efficient energy -conserving electronic scale's circuit structure block diagram.

[0022] In the figure: 1, microcontroller;11, main frequency switching module;2, resistance strain gauge;3, digital analog converter;4, display module;5, power;6, auxiliary circuit. DETAILED DESCRIPTION

[0023] The utility model discloses a high -efficient energy -conserving electronic scale, including: Figure 1 And specific embodiment, further illustrate the utility model.

[0024] In the description of the utility model, need understanding is, the orientation or position relation that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "in", "out" etc. are based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element that is indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and can not be understood as indicating or implying relative importance. For ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation. The embodiment is described below according to the overall structure of the utility model.

[0025] As Figure 1 The utility model discloses a kind of high -efficient energy -conserving electronic scale, including:

[0026] Microcontroller 1, the microcontroller 1 includes the main frequency switching module 11 that can adjust the main frequency of the microcontroller 1, so that the microcontroller 1 at least has first main frequency and second main frequency;

[0027] Resistance strain gauge 2, the power supply voltage of the resistance strain gauge 2 is first weighing voltage corresponding to the first main frequency during weighing, and is second weighing voltage corresponding to the second main frequency during non-weighing, wherein first weighing voltage is greater than second weighing voltage;

[0028] Digital analog converter 3, the digital analog converter 3 is used to convert weight signal into digital signal and output through the display module 4;Display module 4, the display module 4 is used to output data for user reading;

[0029] Power supply 5, the power supply 5 is used to provide stable power supply 5;

[0030] The power supply 5 is connected to the power supply input of the microcontroller 1, one end of the digital-to-analog converter 3 is connected to the resistance strain gauge 2, and the other end of the digital-to-analog converter 3 is connected to the microcontroller 1, and the microcontroller 1 is further connected to the display module 4.

[0031] By the above structure, the article is placed on the electronic scale, the microcontroller 1 detects the weight change through the digital-to-analog converter 3, adjusts the first main frequency through the main frequency switching module 11, correspondingly, the resistance strain gauge 2 switches the voltage to the first weighing voltage corresponding to the first main frequency, to ensure that accurate weighing data can be provided during weighing, and the digital-to-analog converter 3 converts the weight signal into a digital signal and transmits it to the microcontroller 1, and then sends it to the display module 4 to display the weight of the current article for the user to read. When no article is detected to be placed on the electronic scale, the microcontroller 1 automatically enters a non-weighing state, and dynamically adjusts the main frequency to the second main frequency to reduce high power consumption, and at the same time, the first weighing voltage of the resistance strain gauge 2 is switched to the second weighing voltage, and the first weighing voltage is greater than the second weighing voltage, so that the voltage switching of the resistance strain gauge 2 can further reduce power consumption and save battery energy. When the electronic scale detects a weight change, the above cycle is repeated, and by constantly switching the voltage of the resistance strain gauge 2, the power consumption is minimized.

[0032] In the embodiment, the first weighing voltage provides a higher voltage value to obtain a higher internal code value of the digital-to-analog converter 3 to improve the weighing accuracy; the second weighing voltage provides a lower voltage value to minimize energy consumption. In a feasible embodiment, the first weighing voltage of the resistance strain gauge 2 can be 5V, 7V, 10V, etc., and the second weighing voltage can be 1.5V, 2V, 3V, etc. The first weighing voltage is the weighing voltage of the electronic scale, and the second weighing voltage is the non-weighing voltage.

[0033] In the embodiment, the electronic scale further comprises an auxiliary circuit 6, which can include a filter or a signal conditioning circuit, etc. The auxiliary circuit 6 is connected between the resistance strain gauge 2 and the digital-to-analog converter 3 to ensure the stability and accuracy of the signal. The auxiliary circuit 6 helps to filter out high-frequency noise and interference signals generated during the transmission of the signal of the resistance strain gauge 2, thereby improving the weighing accuracy.

[0034] In an optional embodiment, the main frequency of the microcontroller 1 can be 32 MHz and 16 MHz respectively, and the microcontroller 1 can switch the main frequency according to the weighing condition, wherein the 32 MHz is the first main frequency during the weighing, and the 16 MHz is the second main frequency during the non-weighing. When the electronic scale is in the working state, at the standard room temperature, the electronic scale can continuously work for 78 hours (about 3 days) at the first main frequency of 32 MHz, and can continuously work for 286 hours (about 12 days) at the second main frequency of 16 MHz, which can reduce the system energy consumption by 72% compared with the electronic scale before optimization.

[0035] In the embodiment, the power supply 5 further integrates at least a charge and discharge management module, an overvoltage protection module and a temperature monitoring module. The charge and discharge management module can ensure the battery to charge and discharge in the best state, and avoid the battery loss caused by overcharging or overdischarging. The overvoltage protection module can effectively prevent the circuit from being damaged when the voltage is too high. When the input voltage exceeds the safe range, the system will automatically cut off the power supply 5 to protect the core components (such as the microcontroller 1, the digital-to-analog converter 3, the resistance strain gauge 2, etc.) of the electronic scale from voltage impact, avoid the equipment failure or permanent damage caused by the voltage being too high, and ensure the safety and stability of the system operation. The temperature monitoring module can detect the temperature of the device in real time to avoid the damage of the electronic components caused by the temperature being too high.

[0036] In a feasible embodiment, the microcontroller 1 can detect the numerical change of the digital-to-analog converter 3. When the change amount exceeds the change threshold, the main frequency of the microcontroller 1 is switched to the first main frequency of 32 MHz, the first weighing voltage of the resistance strain gauge 2 is switched to 5 V, and the electronic scale is switched to the weighing mode. When the change amount is lower than the change threshold, the main frequency of the microcontroller 1 is switched to the second main frequency of 16 MHz, the second weighing voltage of the resistance strain gauge 2 is switched to 1.5 V, and the electronic scale is switched to the non-weighing mode. In addition, the microcontroller 1 is also provided with a time threshold. When the idle time exceeds the time threshold, the resistance strain gauge 2 will also be switched to the second weighing voltage, and the electronic scale enters the low-power mode. The time threshold can be set by the user (or this function can be disabled). For example, during the weighing, if no weight change is detected within 30 minutes, the electronic scale enters the low-power state, that is, the main frequency of the microcontroller 1 is switched to the second main frequency, and the voltage of the resistance strain gauge 2 is switched to the second weighing voltage. In this state, the digital-to-analog converter 3 samples at least three times every two seconds, and the sampling process takes 0.3 seconds. The above mechanism can reduce the energy consumption by about 70%. Alternatively, the user can also set whether to turn off the system outside the time threshold to achieve the effect of high efficiency and energy saving.

[0037] The utility model discloses a through optimizing the main frequency of microcontroller 1 and the voltage of resistance strain gauge 2, compares with prior art, will power consumption reduce 74%, the endurance time prolongs 4 times, when using, microcontroller 1 real -time monitoring electronic scale's use state, and according to use state adjustment resistance strain gauge 2's power supply in time, reach the purpose of extremely saving electricity, the quick response of digital -analog converter 3, let the user feel that there is abnormality when using electronic scale and weighing.

[0038] Thus far, the technical scheme of the utility model has been described in connection with the preferred embodiments shown in the drawings, but those skilled in the art will readily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the relevant technical features without deviating from the principles of the utility model, and the technical schemes after these changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A high efficiency and energy saving electronic scale characterized in that, The electronic scale comprises: a microcontroller, which comprises a main frequency switching module capable of adjusting the main frequency of the microcontroller, so that the microcontroller has at least a first main frequency and a second main frequency; a resistance strain gauge, which has a first weighing voltage corresponding to the first main frequency during weighing and a second weighing voltage corresponding to the second main frequency during non-weighing, wherein the first weighing voltage is greater than the second weighing voltage; a display module for outputting data for users to read; a digital-to-analog converter for converting a weight signal into a digital signal for output through the display module; a power supply for providing stable power supply; the power supply is connected to the power input of the microcontroller, one end of the digital-to-analog converter is connected to the resistance strain gauge, the other end of the digital-to-analog converter is connected to the microcontroller, and the microcontroller is further connected to the display module.

2. The energy efficient electronic scale as claimed in claim 1, wherein, It further comprises an auxiliary circuit connected between the resistance strain gauge and the digital-to-analog converter.

3. The energy efficient electronic scale as claimed in claim 1 wherein, During non-weighing, the digital-to-analog converter samples at least three times every two seconds.

4. The energy efficient electronic scale of claim 1, wherein, The power supply further integrates a charge and discharge management module, an overvoltage protection module and a temperature monitoring module.

5. The energy efficient electronic scale as claimed in claim 1 wherein, The microcontroller monitors the numerical change of the digital-to-analog converter, when the change amount exceeds the change threshold, the voltage of the resistance strain gauge is switched to the first weighing voltage, and the electronic scale is switched to the weighing mode.

6. The energy efficient electronic scale as claimed in claim 1 wherein, The microcontroller monitors the numerical change of the digital-to-analog converter, when the change amount is lower than the change threshold, the voltage of the resistance strain gauge is switched to the second weighing voltage, and the electronic scale is switched to the non-weighing mode.

7. The energy efficient electronic scale as claimed in claim 5, wherein, The microcontroller is further provided with a time threshold, during the weighing process, when the weighing time exceeds the time threshold, the main frequency of the microcontroller is switched to the second main frequency, and correspondingly, the voltage of the resistance strain gauge is switched to the second weighing voltage.

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