CN113315260A - Price display system - Google Patents
Price display system Download PDFInfo
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- CN113315260A CN113315260A CN202110550624.0A CN202110550624A CN113315260A CN 113315260 A CN113315260 A CN 113315260A CN 202110550624 A CN202110550624 A CN 202110550624A CN 113315260 A CN113315260 A CN 113315260A
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- power supply
- electric energy
- price tag
- energy
- management module
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- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/30—Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- 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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- 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
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- 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
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- 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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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
Abstract
The invention provides a price marking display system which comprises a power supply device and an electronic price tag electrically connected with the power supply device, wherein the power supply device comprises an energy conversion module, and the energy conversion module is used for converting light energy and/or wireless energy in the environment into electric energy to supply power to the electronic price tag. Through the above-mentioned mark display system, adopt the energy conversion module, can last convert light energy and/or wireless energy in the environment into the electric energy and realize the power supply to the electron price tag, the problem of needing the special messenger to change when having avoided adopting battery powered among the prior art and appearing battery power consumption to exhaust, the problem that has the power and need additionally dispose the lead wire in having guaranteed the environment and adopting the wired power supply of power among the prior art still has been avoided, the stability and the flexibility that the electron price tag used have been improved, the use cost and the maintenance cost of electron price tag have also been reduced.
Description
Technical Field
The invention relates to the technical field of price tags, in particular to a price display system.
Background
The electronic price tag has the functions of screen price changing and wireless communication with an upper computer, the price displayed by the electronic price tag can be changed at any time through the upper computer, and compared with the traditional paper price tag, the electronic price tag is high in flexibility, sustainable in use and high in reliability.
However, the electronic price tag is an active device and needs to be driven by a power supply to work normally, and the prior art mainly adopts two modes. One is to supply power through a battery, which can enable the electronic price tag to completely realize wireless operation, but the battery power is limited, and self-discharge also exists in the battery, so that when the battery power is exhausted, a new battery needs to be replaced, and the process additionally increases labor cost and time cost. The other is wired power supply, which can ensure the electronic price tag to work continuously, but the electronic price tag must have a power supply for the environment where the electronic price tag is located, and in addition, the wired power supply also increases the lead deployment cost and limits the flexibility of the electronic price tag.
Therefore, a technical solution capable of solving the drawbacks of the above two methods is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a price display system.
In one embodiment, the present invention provides a price display system, including a power supply device and an electronic price tag electrically connected to the power supply device, wherein the power supply device includes an energy conversion module for converting light energy and/or wireless energy in the environment into electric energy to supply power to the electronic price tag.
In one embodiment, the price display system further comprises an assembly structure, and the electronic price tag is electrically connected with the power supply device through the assembly structure in use.
In one embodiment, the assembly structure comprises a slide rail and a conductive strip arranged on the slide rail, the electronic price tag comprises a sliding structure corresponding to the slide rail and a conductive part arranged on the sliding structure, the electronic price tag is connected with the assembly structure in a sliding mode through the sliding structure and the slide rail when in use, the conductive part is in contact connection with the conductive strip, and the conductive strip is electrically connected with the power supply device.
In one embodiment, the energy conversion module comprises an amorphous silicon solar cell.
In one embodiment, the power supply device further comprises a power supply management module, and the electronic price tag and the energy conversion module are electrically connected through the power supply management module; the power supply management module is used for transforming the first electric energy output by the energy conversion module to obtain first target electric energy, and outputting the first target electric energy to the electronic price tag.
In one embodiment, the power supply device further comprises a standby power supply electrically connected with the power supply management module; the power supply management module is further used for detecting first electric energy, transforming second electric energy output by the standby power supply to obtain second target electric energy when the first electric energy is detected not to meet the preset electric energy, and outputting the second target electric energy to the electronic price tag.
In one embodiment, the backup power source includes a secondary battery or a super capacitor.
In one embodiment, the power supply device further comprises a charging management module electrically connected with the energy conversion module, the power supply management module and the standby power supply respectively; the charging management module is used for detecting initial electric energy output by the energy conversion module, and if the initial electric energy exceeds preset electric energy, the initial electric energy is divided into first electric energy output to the power supply management module and third electric energy output to the standby power supply.
In one embodiment, the backup power source is a secondary battery, and the power supply device further comprises an external power interface connected with the charging management module, wherein the external power interface is used for accessing external power to activate the secondary battery when the secondary battery is over-discharged.
In one embodiment, the electronic tag comprises a controller electrically connected with the energy conversion module, a display and a wireless communication module, wherein the display and the wireless communication module are respectively electrically connected with the controller; the wireless communication module is used for receiving the display information and sending the display information to the controller, the controller is used for generating a control instruction according to the display information and sending the control instruction to the display, the display is used for displaying prices according to the control instruction, and the wireless communication module comprises an NFC communication module and an RF communication module.
Through the price marking display system, adopt the energy conversion module, can last convert light energy and/or wireless energy in the environment into the electric energy and realize the power supply to the electron price tag, the problem of needing the special messenger to change when having avoided adopting battery powered among the prior art and appearing battery power consumption to end up, the problem that has the power and need additionally dispose the lead wire in the environment need be guaranteed to the wired power supply of adoption power among the prior art has still been avoided, the stability and the flexibility that the electron price tag used have been improved, the use cost and the maintenance cost of electron price tag have also been reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a schematic diagram of a pricing display system according to an embodiment of the invention;
FIG. 2 is a schematic front view of an assembly structure according to an embodiment of the present invention;
FIG. 3 is a side schematic view of an assembly structure according to an embodiment of the present invention;
FIG. 4 is a schematic front view of an electronic price tag in accordance with an embodiment of the present invention;
FIG. 5 is a schematic side view of an electronic price tag in accordance with an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a pricing display system according to another embodiment of the invention.
In the above drawings: 1. assembling the structure; 11. a slide rail; 12. a conductive strip; 2. an electronic price tag; 21. a sliding structure; 22. a conductive portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one embodiment, as shown in fig. 1, the present invention provides a price display system, which includes a power supply device and an electronic price tag electrically connected to the power supply device, wherein the power supply device includes an energy conversion module, and the energy conversion module is configured to convert light energy and/or wireless energy in the environment into electric energy to supply power to the electronic price tag.
The electronic price tag is an electronic display device with an information receiving and sending function, is usually used in occasions such as supermarkets, convenience stores or drugstores, and controls the number of the electronic price tag to display through an upper computer so as to realize digital display of the price of a corresponding product. The energy conversion module comprises a photoelectric conversion module and a radio conversion module, wherein the photoelectric conversion module mainly utilizes photoelectric effect or photochemical effect to directly convert light energy into electric energy, and the radio conversion module mainly utilizes radio waves in electromagnetic induction receiving environment to generate electric energy, so that continuous electric energy supply is provided for the electronic price tag. The price marking display system in the embodiment mainly uses the photoelectric conversion module as a main part, and is mainly used in the environment where a stable light source exists, such as stable illumination light when being arranged indoors, stable sunlight when being arranged outdoors, and the like.
Through the price marking display system, adopt the energy conversion module, can last convert light energy and/or wireless energy in the environment into the electric energy and realize the power supply to the electron price tag, the problem of needing the special messenger to change when having avoided adopting battery powered among the prior art and appearing battery power consumption to end up, the problem that has the power and need additionally dispose the lead wire in the environment need be guaranteed to the wired power supply of adoption power among the prior art has still been avoided, the stability and the flexibility that the electron price tag used have been improved, the use cost and the maintenance cost of electron price tag have also been reduced.
In one embodiment, the price display system further comprises an assembly structure, and the electronic price tag is electrically connected with the power supply device through the assembly structure in use.
Wherein, electron price tag and power supply unit all are independent accessory respectively, when needs use, only need with electron price tag and power supply unit carry out electric connection can, nimble convenience. The assembly structure can also realize the electrical connection between the electronic price tag and the power supply device and the fixation of the electronic price tag. For example, the assembly structure is a conductive plug and a conductive socket, the conductive plug and the conductive socket are respectively arranged on the electronic price tag and the power supply device, so that after the conductive plug and the conductive socket are matched, the electric connection is realized, the fixation is also realized, the weight and the volume of the electronic price tag are considered to be smaller, the matching of the conductive plug and the conductive socket can bear the weight of the electronic price tag, the electronic price tag cannot easily fall off, and certainly, in order to further improve the reliability, the edges of the conductive plug and/or the conductive socket can be provided with buffer rubber pads to ensure the connection tightness of the conductive plug and the conductive socket, so that the mode can be adopted, and the volume and the cost can be further saved.
Of course, in other embodiments, the power supply device may be integrated within the electronic price tag, especially for electronic price tags with larger displays.
As shown in fig. 2, 3, 4 and 5, in one embodiment, the mounting structure 1 includes a slide rail 11 and a conductive strip 12 disposed on the slide rail 11, the electronic price tag 2 includes a sliding structure 21 corresponding to the slide rail 11 and a conductive portion 22 disposed on the sliding structure 21, the electronic price tag 2 is slidably connected to the mounting structure 1 through the sliding structure 21 and the slide rail 11 in use, the conductive portion 22 is in contact connection with the conductive strip 12, and the conductive strip 12 is electrically connected to the power supply device.
In the present embodiment, the assembly structure 1 is formed with a groove, the groove is used as the sliding rail 11, and correspondingly, the sliding structure 21 is a protrusion; of course, in other embodiments, the assembling structure 1 may be a protrusion, and the sliding structure 21 may be a groove, which is not limited herein.
In order to enhance the connection stability between the conductive strip 12 and the conductive part 22, a micro spring may be disposed on the back of the conductive strip 12 and/or the back of the conductive part 22, and the elastic force of the micro spring is utilized to ensure that the conductive strip 12 and the conductive part 22 can both be in close contact during the sliding process, thereby improving the stability.
Wherein, when energy conversion module is solar cell panel, can set up solar cell panel at assembly structure 1's top to when electron price tag 2 has a plurality ofly, can set up a plurality of solar cell panels, and solar cell panel's position corresponds with electron price tag 2.
The electronic price tag 2 is fixed and electrically connected with a power supply device through the matching of the sliding rail 11 and the sliding structure 21, and by adopting the mode, the number of the electronic price tags 2 can be flexibly increased and reduced, the assembly is simple, and the efficiency is improved. In other embodiments, of course, other modes can be adopted, and the selection is reasonable according to the actual situation.
In one embodiment, the energy conversion module comprises an amorphous silicon solar cell.
At present, photovoltaic power generation basically adopts a solar cell as a core component of photoelectric conversion, the solar cell can be divided into a photoelectric effect solar cell and a photochemical effect solar cell according to the principle, and can be further divided into a silicon solar cell, a polycrystalline thin-film solar cell, an organic polymer solar cell, a nanocrystal solar cell, a dye-sensitized solar cell, a plastic solar cell and the like according to the material, and each solar cell has corresponding advantages and disadvantages. The performance of the silicon solar cell is superior, and the silicon solar cell comprises a monocrystalline silicon solar cell, a polycrystalline silicon solar cell and an amorphous silicon solar cell, so that the amorphous silicon solar cell based on a photoelectric effect principle is adopted in the embodiment, and the amorphous silicon solar cell has the characteristics of low cost and stable conversion.
Through above-mentioned amorphous silicon solar cell, on the required electric energy basis of guaranteeing the electron price tag, further the cost is reduced and stability has been improved.
As shown in fig. 1, in an embodiment, the power supply device further includes a power supply management module, and the electronic price tag and the energy conversion module are electrically connected through the power supply management module; the power supply management module is used for transforming the first electric energy output by the energy conversion module to obtain first target electric energy, and outputting the first target electric energy to the electronic price tag.
The voltage of the electric energy generated by the energy conversion module can change along with the intensity of the optical energy and/or the wireless energy in the environment, so that when the optical energy and/or the wireless energy in the environment change, the voltage of the first electric energy output by the energy conversion module does not accord with the working voltage required by the electronic price tag, and under the normal condition, the voltage of the electric energy generated by the energy conversion module does not accord with the working voltage required by the electronic price tag, so that the first electric energy with the changed voltage needs to be transformed by the power supply management module, the first target electric energy with stable voltage and the working voltage required by the electronic price tag is obtained, the power supply stability of the electronic price tag is ensured, and the working efficiency of the whole system is improved.
As shown in fig. 1, in an embodiment, the power supply device further includes a backup power source electrically connected to the power supply management module; the power supply management module is further used for detecting first electric energy, transforming second electric energy output by the standby power supply to obtain second target electric energy when the first electric energy is detected not to meet the preset electric energy, and outputting the second target electric energy to the electronic price tag.
Wherein, stand-by power supply can include energy memory and external wired power supply again, and certainly in this embodiment, in order to guarantee the flexibility and the cost of price display system, preferred energy memory is as stand-by power supply. The standby power supply is arranged to allow the power supply device to continue to work normally when the light energy and/or the wireless energy in the environment is too weak, so that the first electric energy output by the energy conversion module cannot meet the working requirement of the power supply device. Whether the first electric energy that power supply management module can real-time detection energy conversion module output is not less than preset electric energy, it means the minimum electric energy that satisfies the operational requirement of various chips in the power supply unit to predetermine the electric energy, specifically indicate the minimum electric energy that satisfies the operational requirement of various chips in the power supply management module in this embodiment, when detecting that first electric energy has been less than preset the electric energy, show that the first electric energy at this moment can't satisfy the operational requirement of power supply management module, need switch over the power supply passageway, insert stand-by power supply promptly, and carry out the vary voltage with the second electric energy of stand-by power supply output, obtain the second target electric energy that voltage is stable and accords with the required operating voltage of electron price tag.
Through above-mentioned stand-by power supply, guarantee that electron price tag also can continuous stable work under adverse circumstances such as environment light energy and/or wireless ability are not enough, improved work efficiency.
In one embodiment, the backup power source includes a secondary battery or a super capacitor.
In order to ensure the flexibility and cost of the pricing display system, the energy storage device is preferably used as a backup power source. The secondary battery refers to a rechargeable battery; the super capacitor is a capacitor with a double-layer structure, has the characteristics of being between a common capacitor and a battery, has larger capacity, can be used as a secondary battery, and has the advantages of high power density, short charging and discharging time, long cycle life and wide working temperature range; the secondary battery or the super capacitor can be used in cooperation with the energy conversion module, and when light energy and/or wireless energy in the environment are stronger, the generated electric energy can charge the secondary battery or the super capacitor.
Through regard as stand-by power supply with secondary battery or super capacitor, make it can cooperate the energy conversion module to use, with the electric energy maximize utilization that the energy conversion module produced, also guaranteed stand-by power supply's flexibility and sustainability.
As shown in fig. 1, in an embodiment, the power supply device further includes a charging management module electrically connected to the energy conversion module, the power supply management module, and the standby power supply, respectively; the charging management module is used for detecting initial electric energy output by the energy conversion module, and if the initial electric energy exceeds preset electric energy, the initial electric energy is divided into first electric energy output to the power supply management module and third electric energy output to the standby power supply.
The charging management module is mainly used for reasonably distributing the initial electric energy output by the energy conversion module, and outputting third electric energy containing residual electric energy to a standby power supply on the basis of ensuring that the first electric energy output to the power supply management module meets the preset electric energy, so that the standby power supply such as a secondary battery or a super capacitor is charged. Specifically, the charging management module detects initial electric energy output by the energy conversion module, and divides the first electric energy and the third electric energy according to electric energy corresponding to the initial electric energy, for example, if the initial electric energy is a, the preset electric energy is B, the first electric energy is a, and the third electric energy is a-B.
Through the charging management module, the initial electric energy output by the energy conversion module is reasonably distributed, and the maximization of the utilization rate is ensured.
In one embodiment, as shown in fig. 1, the backup power source is a secondary battery, and the power supply device further includes an external power interface connected to the charging management module, where the external power interface is used to access external power to activate the secondary battery when the secondary battery is over-discharged.
When the external power supply interface exists, the external electric energy provided by the external power supply can be output to the secondary battery through the charging management module, and the external electric energy is large-current electric energy, so that the secondary battery is activated. Certainly, the energy conversion module can also generate large-current electric energy to be output to the secondary battery by providing stronger light energy and/or wireless energy, so as to realize activation.
In one embodiment, the charging management module further comprises a protection circuit and an alarm, the protection circuit is used for performing emergency stop and sending alarm information when detecting that the standby power supply such as a secondary battery or a super capacitor is over-high in electric energy and overcharged or the electric energy is over-low and overdischarged, and the alarm performs field alarm prompt according to the alarm information.
The numerical judgment of the high electric quantity and the overcharge condition or the low electric quantity and the overdischarge condition can be set according to the actual condition, for example, the numerical judgment can be set as a grading alarm, whether the alarm is given or not can be determined according to different numerical values, the alarm is given generally, the alarm is given seriously and the like, so that the working personnel can know the current state in time; the alarm comprises an acoustic alarm and/or an optical alarm, wherein aiming at the graded alarm, the acoustic alarm can be realized by emitting sounds with different loudness or different frequencies, and the optical alarm can be realized by emitting light with different colors.
Through the protection circuit and the alarm, the charging and discharging conditions of the standby power supply can be monitored in real time, and the standby power supply can be stopped and alarmed in time under the specified conditions, so that the safety of the standby power supply is ensured, the system can be processed by corresponding workers in time, and the overall reliability of the system is improved.
As shown in fig. 1, in one embodiment, the electronic tag includes a controller electrically connected to the energy conversion module, a display electrically connected to the controller, and a wireless communication module; the wireless communication module is used for receiving the display information and sending the display information to the controller, the controller is used for generating a control instruction according to the display information and sending the control instruction to the display, and the display is used for displaying the price according to the control instruction.
In this embodiment, the display and the wireless communication module are connected with the energy conversion module through the controller, so that the power supply of the display and the wireless communication module is distributed by the controller, but may be distributed in other manners in other embodiments. The wireless communication module mainly receives display information sent by the upper computer, and certainly, the wireless communication module can also receive display information sent by the mobile terminal, and the specific structure of the wireless communication module is flexibly configured according to actual scenes. The display comprises an integrated flexible display screen and a flexible display driving module, wherein the flexible display screen can be composed of an OLED (Organic Light-Emitting Diode), and the flexible display driving module is composed of a plurality of flexible driving chips and is used for driving the corresponding OLED to emit Light according to a control instruction; of course, in other embodiments, the flexible display may be an ink-in-water display.
Through flexible display screen and flexible display drive module, realized the full flexibility of electron price tag display, improved the flexibility that the display was deployed, also reduced the space requirement to the deployment.
As shown in fig. 1, in one embodiment, the wireless communication module includes an NFC communication module and an RF communication module.
In this embodiment, the RF (Radio Frequency) communication module is configured to process display prices of a plurality of electronic price tags in batch on the upper computer (as shown in fig. 4, a plurality of electronic price tags are shown in the figure, and are electrically connected to one power supply device, although in order to improve stability, one power supply device may be configured for each electronic price tag); the NFC (Near Field Communication ) Communication module is a Near Field Communication, and the Communication distance is generally less than 10 meters, and a specific Communication distance is set in the maximum Communication distance of the NFC Communication module, for example, set to 1 meter, 1 decimeter, or 1 centimeter, and may be set correspondingly according to actual requirements.
Wherein, when stand-by power supply is secondary battery and the electric quantity appears and crosses low and when putting the condition excessively, NFC communication module and charging management module electric connection can carry out near field electromagnetic induction through NFC communication module, obtain heavy current electric energy to the realization is to secondary battery's activation.
Through the specific arrangement of the wireless communication module, the RF communication module and the NFC communication module are correspondingly configured according to actual conditions, so that the remote batch adjustment of a plurality of electronic price tags can be realized, the individual electronic price tags can be individually adjusted on site, the adjustment means is flexible, and the working efficiency of the system is improved.
Through above-mentioned price display system, the stand-by power supplies such as energy conversion module, the management module that charges, secondary cell or super capacitor, communication modules such as power supply management module and RF communication module and NFC communication module have been integrated for price display system realizes wireless completely, can long-time stable work, and is concrete, realize the conversion of electric energy, charge, the high-efficient management of storage, power supply, and do not need the accessory to change basically and maintain, improved the whole efficiency of system, the comprehensive cost has been reduced.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A price marking display system comprises a power supply device and an electronic price tag electrically connected with the power supply device, and is characterized in that the power supply device comprises an energy conversion module, and the energy conversion module is used for converting light energy and/or wireless energy in the environment into electric energy to supply power to the electronic price tag.
2. A pricing display system according to claim 1, further comprising mounting structure through which the electronic price tag is electrically connected to the power supply means in use.
3. A pricing display system according to claim 2, wherein the mounting structure comprises a sliding track and a conductive strip disposed on the sliding track, the electronic price tag comprises a sliding structure corresponding to the sliding track and a conductive portion disposed on the sliding structure, the electronic price tag is slidably connected to the mounting structure through the sliding structure and the sliding track when in use, and the conductive portion is in contact connection with the conductive strip, and the conductive strip is electrically connected to the power supply device.
4. The pricing display system of claim 1, wherein the energy conversion module comprises an amorphous silicon solar cell.
5. The pricing display system of claim 1, wherein the power supply further comprises a power management module, the electronic price tag and the energy conversion module being electrically connected through the power management module; the power supply management module is used for transforming the first electric energy output by the energy conversion module to obtain first target electric energy, and outputting the first target electric energy to the electronic price tag.
6. The pricing display system of claim 5, wherein the power supply further comprises a backup power source electrically connected to the power management module; the power supply management module is further used for detecting the first electric energy, transforming second electric energy output by the standby power supply to obtain second target electric energy when the first electric energy is detected not to meet preset electric energy, and outputting the second target electric energy to the electronic price tag.
7. A pricing display system according to claim 6, characterized in that the backup power source comprises a secondary battery or a super capacitor.
8. The pricing display system of claim 7, wherein the power supply further comprises a charging management module electrically connected to the energy conversion module, the power supply management module, and the backup power source, respectively; the charging management module is used for detecting initial electric energy output by the energy conversion module, and if the initial electric energy exceeds the preset electric energy, the charging management module divides the initial electric energy into first electric energy which is output to the power supply management module and is used for the power supply management module to transform and detect and third electric energy which is output to the standby power supply and is used for the standby power supply to store.
9. The pricing display system of claim 8, wherein the backup power source is a secondary battery, the power supply further comprising an external power interface connected to the charging management module, the external power interface being configured to access external power to activate the secondary battery when the secondary battery is over-discharged.
10. The pricing display system of claim 1, wherein the electronic label comprises a controller electrically connected to the energy conversion module, a display and a wireless communication module electrically connected to the controller, respectively; the wireless communication module is used for receiving display information and sending the display information to the controller, the controller is used for generating a control instruction according to the display information and sending the control instruction to the display, the display is used for displaying prices according to the control instruction, and the wireless communication module comprises an NFC communication module and an RF communication module.
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| CN202110550624.0A CN113315260A (en) | 2021-05-20 | 2021-05-20 | Price display system |
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| CN202110550624.0A CN113315260A (en) | 2021-05-20 | 2021-05-20 | Price display system |
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