CN113091870A - Solar electronic scale - Google Patents
Solar electronic scale Download PDFInfo
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- CN113091870A CN113091870A CN201911340035.9A CN201911340035A CN113091870A CN 113091870 A CN113091870 A CN 113091870A CN 201911340035 A CN201911340035 A CN 201911340035A CN 113091870 A CN113091870 A CN 113091870A
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- solar
- electronic scale
- storage battery
- cell panel
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- 238000005303 weighing Methods 0.000 claims abstract description 64
- 238000003860 storage Methods 0.000 claims abstract description 56
- 238000012545 processing Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 230000006798 recombination Effects 0.000 abstract description 2
- 238000005215 recombination Methods 0.000 abstract description 2
- 230000001502 supplementing effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 9
- 239000002253 acid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 235000014102 seafood Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to an electronic weighing apparatus, in particular to a solar electronic scale. The solar electronic scale comprises a weighing component, a storage battery and a solar cell panel, wherein the solar cell panel is connected with the weighing component, the solar cell panel is connected with the storage battery, the storage battery is connected with the weighing component, the solar cell panel supplies power to the weighing component and charges the storage battery, and when the electric quantity generated by the solar cell panel is insufficient, the storage battery directly supplies power to the weighing component. The solar electronic scale uses the solar cell panel and the storage battery to be matched, the symmetrical recombination part supplies power, and the commercial power interface is used for supplementing the electric quantity of the storage battery in the absence of sunlight.
Description
Technical Field
The invention relates to an electronic weighing apparatus, in particular to a solar electronic scale.
Background
The electronic scale is a common electronic weighing apparatus in life, the use scene is various, the electronic scale is usually provided with a power line, and the electronic scale is powered by 220V mains supply, but in places such as a fishery, a wharf, a construction site, a metal trading place, a temporary market and the like and other outdoor places inconvenient to use the mains supply, the solar electronic scale without the mains supply has great application advantages. However, due to the dependence of the solar electronic scale on sunlight as an energy source, the application of the solar electronic scale is limited due to insufficient light energy in a long-term indoor environment or in a continuous rainy day, the service life is too short, and the solar electronic scale can only be suitable for scenes such as temporary market gathering and the like and cannot adapt to long-time outdoor work. However, with the rapid development of electronic device technology, electronic devices with low voltage, low consumption and low cost can be applied to electronic scale technology, so that the manufacture of a solar electronic scale with low power consumption is possible, the service life of the solar electronic scale is prolonged, and the application range of the solar electronic scale is expanded.
Disclosure of Invention
The invention aims to overcome at least one defect of the prior art, and provides a solar electronic scale with low power consumption and long service life, which is used for solving the problem that the common solar electronic scale depends heavily on solar energy and cannot work for a long time without mains supply power supply.
The technical scheme adopted by the invention is as follows:
the utility model provides a solar energy electronic scale, contains weighing component, battery and solar cell panel, and solar cell panel is connected with the weighing component, and solar cell panel is connected with the battery, and the battery is connected with the weighing component, solar cell panel supplies power and charges for the battery for the weighing component, when the produced electric quantity of solar cell panel is not enough, directly supplies power for the weighing component by the battery.
In this technical scheme, the subassembly of weighing is the work position of electronic scale, and in the better open air of sunshine condition, the electric energy of its use directly provides through solar cell panel. The stronger the light, the more electric energy is provided, and when the current of more than 200mA is reached, the electric energy generated by the solar panel can supply the weighing component to work, and the redundant part of the current automatically charges the storage battery. When outdoor sunlight intensity is not enough, or the solar electronic scale is placed indoors for use, the electric quantity generated by the solar cell panel is not enough, and the storage battery supplies electric energy to supply the weighing component to work. When the solar electronic scale does not work, the solar electronic scale is placed at a position with sunlight, and the solar panel automatically converts light energy into electric energy to charge the storage battery until the storage battery is saturated for the next use. The solar electronic scale can be used outdoors for a long time, and a battery is not required to be charged specially by using commercial power.
Furthermore, the solar cell panel comprises a solar wiring terminal and a power panel, positive and negative electrodes of the solar cell panel are connected with the solar wiring terminal, and the solar wiring terminal is connected with the power panel and is connected with the storage battery through the power panel to charge the storage battery. The positive and negative electrodes of the solar cell panel are respectively connected to the two solar connecting terminals, so that the light energy can be conveniently connected to the power panel with enough intensity through the connecting terminals, and then the light energy is connected to the storage battery through the power panel circuit to charge the storage battery.
Further, the solar cell panel is a 6-volt panel of 200mmx70 mm. In the open air, when cloudy day, solar cell panel can provide the required power consumption of electronic scale. When the light is stronger, the more electric energy is supplied, and the current of more than 200mA is reached, and the redundant part of the current automatically charges the storage battery. Therefore, the electronic scale can be used outdoors for a long time, the commercial power is not needed to be specially used for charging the storage battery, and the problem that the electronic scale stops working due to power shortage is not needed to be worried about.
Further, the solar cell panel is embedded on the upper surface and/or the left surface and/or the right surface and/or the rear surface of the solar electronic scale. The left and right surfaces and the upper surface of the electronic scale are provided with the solar cell panels, so that the electronic scale can receive sunlight as much as possible, and the orientation of the solar cell panels in the electronic scale can be adjusted without following the change of the direction of the sunlight in the outdoor use process of the electronic scale. Because the electronic scale is a precise electronic weighing apparatus, the precision of the electronic scale can be influenced by frequent movement, the solar electronic scale of the technical scheme increases the setting range of the solar cell panel, and the movement of the electronic scale is avoided while the sunlight is fully utilized.
Further, the shell of the solar electronic scale is provided with a transparent cover and is sealed through the transparent cover. Because the solar energy electronic scale among this technical scheme need use in scenes such as fishing ground, pier, the environment is comparatively complicated, and the influence of external environment to the electronic scale can't be avoided to the in-process of weighing of goods such as seafood, the setting up of translucent cover can prevent dust, prevent water and drench, also can prevent slight striking, protects the electronic scale, makes the electronic scale more durable.
In the technical scheme, the weighing assembly comprises a weighing sensor, a display, an A/D conversion module and a microprocessor, wherein the A/D conversion module converts an analog electric signal output by the weighing sensor into a digital signal, and the digital signal is displayed on the display through the processing of the microprocessor. The A/D module can achieve low power consumption and is lower than 3V power supply. At present, 24-bit high-precision A/D modules with current less than 2 milliamperes are very popular, and the power consumption of the A/D modules can be lower than 6 milliwatts due to the adoption of sleep technology processing. The microprocessor can also be powered by less than 3V, and the low power consumption can be achieved by adopting a sleep technology for processing.
In the technical scheme, the weighing sensor is a resistance-type weighing sensor. The resistive weighing sensor can be supplied with power of 3 volts or even lower, the bridge resistance can be more than 1 kilo ohm, and the electric power consumption can be below 9 milliwatts (3 x 3/1000 ═ 0.009).
Further, the display is a liquid crystal display. When the backlight is not used outdoors, the power consumption of the liquid crystal display is extremely low and can be almost ignored. Therefore, the power consumption of the weighing component of the solar electronic scale in the technical scheme can be less than 30 milliwatts, and lower power consumption can be achieved if low-power-consumption technology is adopted for processing.
In the technical scheme, the solar electronic scale further comprises a mains supply interface, a transformer is arranged in the mains supply interface, and the transformer converts 220V mains supply into low voltage for a weighing component or charges a storage battery.
The solar electronic scale further comprises a charging controller, and the charging controller is used for controlling a mains supply interface or controlling the connection between the solar cell panel and the storage battery. In the open air of sufficient sunshine, charge controller control solar cell panel is connected with the battery, converts light energy into electric energy and supplies to the subassembly of weighing and use and charge the battery simultaneously. When the weighing component is used in a rainy day or indoors for a long time, the charging controller controls the commercial power interface to be connected with the storage battery, and the electric energy is provided for the weighing component through the commercial power and the storage battery is charged. So can guarantee the make full use of solar energy, also can guarantee simultaneously that the battery deposits sufficient electric quantity and in order to supply the long-time work of subassembly of weighing, needn't worry the problem that the electronic scale lacks the electricity and stops work.
The solar electronic scale adopts the storage battery to store electric energy supplied by solar energy or commercial power so as to provide the electric energy for the weighing component of the electronic scale to use. The lead-acid battery can be used as the storage battery, the cost is low, and the lead-acid battery with the volume of 47mmx47mmx100mm can reach 4AH capacity. The battery can work continuously for 400 hours by adopting a lead-acid battery, wherein the ratio of 4000mAH/10mA is 400H. And because the weighing action is discontinuous, the device can be used for a longer time by being assisted with a low-power consumption awakening technology.
Compared with the prior art, the invention has the beneficial effects that: the solar electronic scale uses the solar cell panel and the storage battery to be matched, the symmetrical recombination part supplies power, the commercial power interface is used for supplementing the electric quantity of the storage battery in the absence of sunlight, the power consumption is low, and the continuous service time can reach 400 hours.
Drawings
FIG. 1 is a schematic diagram of a solar electronic scale 1 according to the present invention.
Fig. 2 is a schematic diagram of a solar electronic scale 2 according to the present invention.
Fig. 3 is a schematic diagram of a solar electronic scale 3 according to the present invention.
Fig. 4 is a circuit diagram of the solar electronic scale of the present invention.
The figure includes: 1-a solar panel; 2-a storage battery; 3-solar wiring terminals; 4-a display; 5-transformer.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 to 3, the solar electronic scale of the present embodiment includes a weighing module, a storage battery 2 and a solar panel 1, the solar panel 1 is connected to the weighing module, the solar panel 1 is connected to the storage battery 2, the storage battery 2 is connected to the weighing module, the solar panel 1 supplies power to the weighing module and charges the storage battery 2, and when the electric quantity generated by the solar panel 1 is insufficient, the storage battery 2 directly supplies power to the weighing module.
In this technical scheme, the subassembly of weighing is the work position of electronic scale, and in the better open air of sunshine condition, the electric energy of its use directly provides through solar cell panel 1. The stronger the light, the more electric energy is provided, and when the current more than 200mA is reached, the electric energy generated by the solar panel 1 is used for supplying the weighing component to work, and the redundant part of the current automatically charges the storage battery 2. When the outdoor sunlight intensity is not enough or the solar electronic scale is placed indoors for use, the electric quantity generated by the solar cell panel 1 is not enough, and the storage battery 2 supplies electric energy to supply the weighing component to work. When the solar electronic scale does not work, the solar electronic scale is placed at a position with sunlight, and the solar cell panel 1 automatically converts light energy into electric energy to charge the storage battery 2 until the storage battery 2 is saturated for the next use. The solar electronic scale can be used outdoors for a long time, and a battery is not required to be charged specially by using commercial power.
The solar cell panel 1 comprises a solar wiring terminal 3 and a power panel, the positive electrode and the negative electrode of the solar cell panel 1 are connected with the solar wiring terminal 3, the solar wiring terminal 3 is connected with the power panel, and the storage battery 2 is connected with the storage battery 2 through the power panel to charge the storage battery. The positive and negative electrodes of the solar panel 1 are respectively connected to the two solar connecting terminals 3, so that the light energy can be conveniently connected to the power panel with enough intensity through the connecting terminals, and then the light energy is connected to the storage battery 2 through the power panel circuit to charge the storage battery 2.
The solar panel 1 is a 6-volt panel of 200mmx70 mm. In the open air and in cloudy days, the solar cell panel 1 can provide the required power consumption of the electronic scale. When the light is stronger, the more electric energy is supplied, and the current of more than 200mA is reached, and the redundant part of the current automatically charges the storage battery 2. Therefore, the electronic scale can be used outdoors for a long time, the commercial power is not needed to be specially used for charging the storage battery 2, and the problem that the electronic scale stops working due to power shortage is avoided.
The solar cell panel 1 is embedded on the upper surface and/or the left surface and/or the right surface and/or the rear surface of the solar electronic scale. The left and right surfaces and the upper surface of the electronic scale are provided with the solar cell panels 1, so that the electronic scale can receive sunlight as much as possible, and the direction of the sunlight does not need to be changed to adjust the orientation of the solar cell panels 1 in the electronic scale in the outdoor use process of the electronic scale. Because the electronic scale is a precise electronic weighing apparatus, the precision of the electronic scale can be influenced by frequent movement, the solar electronic scale of the technical scheme increases the setting range of the solar cell panel 1, and the movement of the electronic scale is avoided while the sunlight is fully utilized.
The shell of the solar electronic scale is provided with a transparent cover and is sealed through the transparent cover. Because the solar energy electronic scale among this technical scheme need use in scenes such as fishing ground, pier, the environment is comparatively complicated, and the influence of external environment to the electronic scale can't be avoided to the in-process of weighing of goods such as seafood, the setting up of translucent cover can prevent dust, prevent water and drench, also can prevent slight striking, protects the electronic scale, makes the electronic scale more durable.
The weighing component comprises a weighing sensor, a display 4, an A/D conversion module and a microprocessor, wherein the A/D conversion module converts an analog electric signal output by the weighing sensor into a digital signal, and the digital signal is displayed on the display 4 through the processing of the microprocessor. The A/D module can achieve low power consumption and is lower than 3V power supply. At present, 24-bit high-precision A/D modules with current less than 2 milliamperes are very popular, and the power consumption of the A/D modules can be lower than 6 milliwatts due to the adoption of sleep technology processing. The microprocessor can also be powered by less than 3V, and the low power consumption can be achieved by adopting a sleep technology for processing.
The weighing sensor is a resistance-type weighing sensor. The resistive weighing sensor can be supplied with power of 3 volts or even lower, the bridge resistance can be more than 1 kilo ohm, and the electric power consumption can be below 9 milliwatts (3 x 3/1000 ═ 0.009).
The display 4 is a liquid crystal display. When the backlight is not used outdoors, the power consumption of the liquid crystal display is extremely low and can be almost ignored. Therefore, the power consumption of the weighing component of the solar electronic scale in the technical scheme can be less than 30 milliwatts, and lower power consumption can be achieved if low-power-consumption technology is adopted for processing.
The solar electronic scale further comprises a mains supply interface, a transformer 5 is arranged in the mains supply interface, and the transformer 5 converts 220V mains supply into low voltage for a weighing component or charges the storage battery 2.
The solar electronic scale further comprises a charging controller, and the charging controller is used for controlling a mains supply interface or controlling the connection between the solar cell panel 1 and the storage battery 2. In the open air of sunshine sufficiency, charge controller control solar cell panel 1 is connected with battery 2, charges battery 2 simultaneously with light energy conversion for the electric energy supplies to the use of weighing component. When in continuous rainy days or long-term indoor, the charging controller controls the commercial power interface to be connected with the storage battery 2, and the electric energy is provided for the weighing component through the commercial power and is used for charging the storage battery 2. So can guarantee the make full use of solar energy, also can guarantee simultaneously that battery 2 saves sufficient electric quantity and be supplied the subassembly of weighing to work for a long time, needn't worry the problem that the electronic scale lacks the electricity and stops work.
Fig. 4 shows a circuit diagram of the solar electronic scale of the present invention. The solar electronic scale of the technical scheme adopts the storage battery 2 to store electric energy supplied by solar energy or commercial power so as to provide the electric energy for the weighing component of the electronic scale to use. The storage battery 2 is charged by the power supply of 220V alternating current of the commercial power. When the electronic scale is placed or used indoors and the charging is carried out conditionally, the storage battery 2 is fully charged, so that the electronic scale can be applied to occasions where the charging cannot be carried out. The electric power is also needed to be charged when the solar energy is used in a long-term cloudy season or used indoors for a long time. When used outdoors, the electric power is automatically supplied from the solar cell panel 1. The solar cell panel 1 directly supplements electric energy to the storage battery 2 through the backflow prevention diode. The 6V battery board with the power of 200mmx70mm is adopted to supply power, and the power consumption required by the electronic scale can be provided outdoors and in cloudy days. When the light is stronger, the more electric energy is supplied, the current larger than 200mA can be reached, and the redundant part of the current automatically charges the storage battery 2. Therefore, the electronic scale can be used outdoors for a long time, the commercial power is not needed to be specially used for charging the battery, and the problem that the electronic scale stops working due to power shortage is avoided. The lead-acid battery can be used as the storage battery 2, the cost is low, and the lead-acid battery with the volume of 47mmx47mmx100mm can reach 4AH capacity. The battery can work continuously for 400 hours by adopting a lead-acid battery, wherein the ratio of 4000mAH/10mA is 400H. And because the weighing action is discontinuous, the device can be used for a longer time by being assisted with a low-power consumption awakening technology.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
Claims (10)
1. The utility model provides a solar electronic scale, its characterized in that, solar electronic scale contains weighing component, battery and solar cell panel, and solar cell panel is connected with the weighing component, and solar cell panel is connected with the battery, and the battery is connected with the weighing component, solar cell panel supplies power for the weighing component and charges for the battery, when the produced electric quantity of solar cell panel is not enough, directly supplies power for the weighing component by the battery.
2. The solar electronic scale according to claim 1, wherein the solar cell panel comprises a solar connecting terminal and a power panel, positive and negative electrodes of the solar cell panel are connected with the solar connecting terminal, the solar connecting terminal is connected with the power panel, and the storage battery is charged by connecting the storage battery with the power panel.
3. The solar electronic scale according to claim 2, wherein the solar panel is a 200mmx70mm 6 volt panel.
4. The solar electronic scale according to claim 3, wherein the solar panel is embedded on the upper surface and/or left surface and/or right surface and/or rear surface of the solar electronic scale.
5. Solar electronic scale according to claim 4, characterized in that the housing of the solar electronic scale is provided with a transparent cover and sealed by the transparent cover.
6. The solar electronic scale according to claim 1, wherein the weighing assembly comprises a weighing sensor, a display, an A/D conversion module and a microprocessor, the A/D conversion module converts an analog electric signal output by the weighing sensor into a digital signal, and the digital signal is displayed on the display through processing of the microprocessor.
7. The solar electronic scale according to claim 6, wherein the load cell is a resistive load cell.
8. The solar electronic scale according to claim 6, wherein the display is a liquid crystal display.
9. The solar electronic scale according to claim 1, further comprising a mains interface, wherein the mains interface comprises a transformer, and the transformer converts 220 v mains into low voltage for a weighing component or for charging a storage battery.
10. The solar electronic scale according to claim 1, further comprising a charge controller, wherein the charge controller is used for controlling a mains interface or controlling connection of the solar cell panel and the storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911340035.9A CN113091870A (en) | 2019-12-23 | 2019-12-23 | Solar electronic scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911340035.9A CN113091870A (en) | 2019-12-23 | 2019-12-23 | Solar electronic scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113091870A true CN113091870A (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911340035.9A Pending CN113091870A (en) | 2019-12-23 | 2019-12-23 | Solar electronic scale |
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| Country | Link |
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| CN (1) | CN113091870A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201000360Y (en) * | 2007-01-17 | 2008-01-02 | 恒协电子(厦门)有限公司 | Solar electronic scales |
| CN201408073Y (en) * | 2009-03-24 | 2010-02-17 | 潘聪 | Solar power weighting meter |
| CN102645262A (en) * | 2011-02-18 | 2012-08-22 | 张一熙 | Solar electronic scale capable of realizing self-charging |
| CN103175600A (en) * | 2011-12-20 | 2013-06-26 | 陕西亚泰电器科技有限公司 | Electronic scale with data storage and query functions |
| CN205192604U (en) * | 2015-11-04 | 2016-04-27 | 安徽瑞丰管业有限公司 | Electronic scale |
| CN108254056A (en) * | 2016-12-29 | 2018-07-06 | 天津市华衡伟业称重系统股份有限公司 | It is a kind of to utilize solar powered dynamic weighing instrument |
| CN209326764U (en) * | 2018-11-30 | 2019-08-30 | 北京铂阳顶荣光伏科技有限公司 | Electronic scale |
-
2019
- 2019-12-23 CN CN201911340035.9A patent/CN113091870A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201000360Y (en) * | 2007-01-17 | 2008-01-02 | 恒协电子(厦门)有限公司 | Solar electronic scales |
| CN201408073Y (en) * | 2009-03-24 | 2010-02-17 | 潘聪 | Solar power weighting meter |
| CN102645262A (en) * | 2011-02-18 | 2012-08-22 | 张一熙 | Solar electronic scale capable of realizing self-charging |
| CN103175600A (en) * | 2011-12-20 | 2013-06-26 | 陕西亚泰电器科技有限公司 | Electronic scale with data storage and query functions |
| CN205192604U (en) * | 2015-11-04 | 2016-04-27 | 安徽瑞丰管业有限公司 | Electronic scale |
| CN108254056A (en) * | 2016-12-29 | 2018-07-06 | 天津市华衡伟业称重系统股份有限公司 | It is a kind of to utilize solar powered dynamic weighing instrument |
| CN209326764U (en) * | 2018-11-30 | 2019-08-30 | 北京铂阳顶荣光伏科技有限公司 | Electronic scale |
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Application publication date: 20210709 |
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