CN111383605A - Passive display device, communication method, active electronic terminal and storage medium - Google Patents
Passive display device, communication method, active electronic terminal and storage medium Download PDFInfo
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- CN111383605A CN111383605A CN201811628414.3A CN201811628414A CN111383605A CN 111383605 A CN111383605 A CN 111383605A CN 201811628414 A CN201811628414 A CN 201811628414A CN 111383605 A CN111383605 A CN 111383605A
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/3433—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—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 by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
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Abstract
The embodiment of the application provides a passive display device, a communication method, an active electronic terminal and a storage medium. The passive display device comprises a shell, wherein the shell is internally provided with: an electronic paper display module; a first antenna; the radio frequency communication interface is used for acquiring a radio frequency signal received by the first antenna; the radio frequency signal comprises energy; the energy acquisition module is used for converting the energy in the radio frequency signal into direct current; the energy storage module is used for storing the direct current; the temperature sensor is used for acquiring the ambient temperature of the device; and the main controller is used for determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity of the energy storage module when the radio frequency signal contains data to be displayed. The embodiment of the application can reduce the phenomenon that the refreshing of the brush is incomplete due to insufficient energy of the passive display device.
Description
Technical Field
The present disclosure relates to the field of wireless communication and passive system technologies, and in particular, to a passive display device, a communication method, an active electronic terminal, and a storage medium.
Background
With the development and progress of electronic paper technology and wireless communication technology, passive display devices using electronic paper as a display screen have been gradually applied to the fields of pendant accessories, electronic posters, electronic business cards, electronic bus stop boards, electronic labels for goods or electronic labels for goods, and the like.
Generally, electronic paper displays contents for a long time after a screen is powered off by using an electrophoretic display technology, but the electrophoretic display technology is greatly influenced by ambient temperature in a refreshing process. Moreover, in the process of implementing the present application, the inventor of the present application finds that the energy required for refreshing the electronic paper screen at different temperatures is different, and generally, the lower the temperature is, the longer the time required for refreshing is. The existing passive display device cannot guarantee the energy required by refreshing of the electronic paper screen at low temperature due to limited collected energy, so that incomplete refreshing is easy to occur when the temperature is low.
Disclosure of Invention
An object of the embodiments of the present application is to provide a passive display device, a communication method, an active electronic terminal and a storage medium, so as to reduce incomplete refreshing of a brush due to insufficient energy of the passive display device.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a passive display device, including a housing, where:
an electronic paper display module;
a first antenna;
the radio frequency communication interface is used for acquiring a radio frequency signal received by the first antenna; the radio frequency signal comprises energy;
the energy acquisition module is used for converting the energy in the radio frequency signal into direct current;
the energy storage module is used for storing the direct current;
the temperature sensor is used for acquiring the ambient temperature of the device;
and the main controller is used for determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity of the energy storage module when the radio frequency signal contains data to be displayed.
On the other hand, an embodiment of the present application further provides a communication method, including:
acquiring a radio frequency signal; the radio frequency signal comprises energy;
confirming whether the radio frequency signal contains data to be displayed;
when the radio frequency signal contains data to be displayed, acquiring the ambient temperature and the residual electric quantity;
and determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity.
In another aspect, an embodiment of the present application further provides a computer storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following steps:
acquiring a radio frequency signal; the radio frequency signal comprises energy;
confirming whether the radio frequency signal contains data to be displayed;
when the radio frequency signal contains data to be displayed, acquiring the ambient temperature and the residual electric quantity;
and determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity.
On the other hand, the embodiment of the application also provides an active electronic terminal, wherein the active electronic terminal is used for providing radio frequency signals for the passive display device; the radio frequency signal comprises energy;
the passive display device comprises a shell, wherein the shell is internally provided with:
an electronic paper display module;
a first antenna;
the radio frequency communication interface is used for acquiring a radio frequency signal received by the first antenna;
the energy acquisition module is used for converting the energy in the radio frequency signal into direct current;
the energy storage module is used for storing the direct current;
the temperature sensor is used for acquiring the ambient temperature of the device;
and the main controller is used for determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity of the energy storage module when the radio frequency signal contains data to be displayed.
According to the technical scheme provided by the embodiment of the application, the environment temperature and the self residual electric quantity are comprehensively considered, so that the passive display device of the embodiment of the application can execute the refreshing processing on the electronic paper display module only when the self residual electric quantity is higher than the electric quantity required by refreshing the electronic paper display module at the current environment temperature; therefore, the problems that the interruption is caused by insufficient energy in the refreshing process, the incomplete refreshing is caused and the like are reduced or avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort. In the drawings:
FIG. 1 is a schematic diagram of a passive display device according to some embodiments of the present application;
FIG. 2 is a schematic diagram of communication between a passive display device and an active electronic device according to some embodiments of the present application;
FIG. 3 is a schematic diagram of a passive display device according to further embodiments of the present application;
FIG. 4 is a refresh diagram of a passive display device according to some embodiments of the present application;
FIG. 5 is a block diagram of a passive display device according to some embodiments of the present application;
FIG. 6 is a block diagram of a passive display device according to further embodiments of the present application;
FIG. 7 is a block diagram of an energy harvesting device according to further embodiments of the present disclosure;
FIG. 8 is a block diagram of a passive display device according to further embodiments of the present application;
FIG. 9 is a block diagram of a passive display device according to further embodiments of the present application;
fig. 10 is a schematic diagram of communication interaction between a passive display device and an active electronic device according to some embodiments of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
As shown in fig. 1, the passive display device 200 in some embodiments of the present application may include a housing 210, and an electronic paper display module 201 may be disposed within the housing 210. As shown in fig. 2, the passive display device 200 may communicate with the active electronic apparatus 100 based on a predetermined short-range wireless communication protocol. By providing the radio frequency signal, the active electronic device 100 may wirelessly supply power to the passive display device 200, and may also transmit data to be displayed to the passive display device 200, and the passive display device 200 outputs and displays the data to be displayed on the electronic paper display module 201. The Near Field Communication protocol includes, but is not limited to, a Near Field Communication (NFC) protocol, a Near Field Magnetic Induction (NFMI) protocol, a Radio Frequency Identification (RFID) protocol, and the like. The active electronic device may include a smart phone, a digital assistant, a smart wearable device, a tablet computer, a notebook computer, and the like. Wherein, wearable equipment of intelligence can include intelligent bracelet, intelligent wrist-watch, intelligent glasses, intelligent helmet etc. again.
The passive display device 200 according to the embodiment of the present application may be applied to various application scenarios such as pendant accessories, electronic posters, electronic business cards, electronic bus stop boards, electronic labels for goods, or electronic labels for goods. In addition, in a corresponding application scenario, the shape, size, composition, structure, etc. of the passive display device 200 may be adjusted accordingly as needed. For example, as shown in fig. 3, a hanging hole 211 may be further provided in the housing 210 for hanging, and the hanging hole 211 may be adapted to pass a string, a key ring, or the like.
As shown in fig. 5, in some embodiments of the present application, the passive display device 200 may further include a first antenna 202, a radio frequency communication interface 203, a main controller 204, an energy harvesting module 205, and an energy storage module 206 disposed in the housing 210 in addition to the electronic paper display module 201. Wherein the content of the first and second substances,
the radio frequency communication interface 203 may be used to obtain a radio frequency signal received by the first antenna 202; the rf signal may include energy.
The energy harvesting module 205 may be configured to convert energy in the radio frequency signal into direct current.
The energy storage module 206 may be used to store direct current.
A temperature sensor 207 may be used to acquire the ambient temperature of the device.
The main controller 204 may be configured to determine whether to execute the refresh process according to the ambient temperature collected by the temperature sensor 207 and the remaining power of the energy storage module 206 when the radio frequency signal includes data to be displayed. The refresh in this specification means that the electronic paper display module 201 updates the display content, that is, the electronic paper display module 201 is updated from one display interface to another display interface. For example, as shown in fig. 4, in an exemplary scenario, the electronic paper display module 201 is updated from an originally displayed elliptical pattern to a triangular pattern.
Therefore, the environmental temperature and the self residual capacity are comprehensively considered, so that the passive display device 200 according to the embodiment of the present application can execute the refresh processing on the electronic paper display module 201 only when the self residual capacity is higher than the electric quantity required by the electronic paper display module 201 refreshed at the current environmental temperature; therefore, the problems that the energy is insufficient to interrupt in the refreshing process, the refreshing is incomplete and the like caused by the interruption are avoided.
In some embodiments, whether the rf signal includes data to be displayed may be determined by sequentially demodulating the rf signal (i.e., demodulating the rf signal into a baseband signal), decoding the rf signal (i.e., decoding the baseband signal into a data packet), and so on.
In some embodiments, the main controller 204 determines whether to perform the refresh process according to the ambient temperature and the remaining amount of the energy storage module 206, and may include the following steps:
determining a first electric quantity value required for refreshing the electronic paper display module 201 at the current ambient temperature according to the corresponding relation between the preset temperature and the refreshing energy consumption;
comparing the first electric quantity value with a second electric quantity value currently remaining in the energy storage module 206;
if the second electric quantity value is higher than the first electric quantity value, the refresh process of the electronic paper display module 201 may be performed; otherwise, the refresh process for the electronic paper display module 201 is not performed.
Wherein, the correspondence between the temperature and the refresh energy consumption is as follows: and under the corresponding temperature environment, the electronic paper refreshing display module 201 refreshes the electric quantity value required by one time of refreshing. For example, at 25 ℃, the electric quantity value required by one electronic paper display module 201 to complete one refresh is the refresh duration multiplied by 20mW power consumption; at 10 ℃, the electric quantity value required by the electronic paper display module 201 to complete one-time refreshing is the refreshing duration multiplied by 40mW power consumption; at 0 ℃, the electric quantity value required by the electronic paper display module 201 to complete one refresh is the refresh duration multiplied by 60mW power consumption, and so on. Under different conditions, due to differences in the size, material, model, and the like of the electronic paper display module 201, the corresponding relationship between the temperature of the electronic paper display module 201 and the refresh energy consumption also differs; the specific correspondence between the temperature and the refresh energy consumption may be obtained in advance by actual measurement, calculation, or from data provided by the manufacturer of the electronic paper display module 201. In addition, in the main controller 204 of the passive display device 200, the correspondence between the temperature and the refresh energy consumption may be stored in the form of a correspondence table, a correspondence curve, or the like.
In the above embodiment, the main controller 204 may detect the remaining amount of the energy storage module 206. For example, in an exemplary embodiment, the energy storage module 206 may be one or more capacitors, and in the case of multiple capacitors, the capacitors may be connected in parallel to improve energy storage efficiency. Accordingly, the main controller 204 can determine the remaining capacity Es of the energy storage module 206 by the following formula:
Es＝a*Cs*Vs2
where Cs is the capacitance of the capacitor, Vs is the voltage across the capacitor, and a is a constant coefficient, for example, in an exemplary embodiment, a may be selected to be 0.5. After the passive display device 200 establishes a communication connection with the active electronic device 100, the capacitor is charged to store energy under the energy supply of the active electronic device 100, and the voltage is continuously increased. The main controller 204 may detect Vs in real time or at regular time, and calculate the remaining power Es of the energy storage module 206 according to the above formula.
In other embodiments, the main controller 204 determines whether to perform the refresh process according to the ambient temperature and the remaining power of the energy storage module 206, and may also include the following steps:
determining the time length required for refreshing the electronic paper display module 201 at the current ambient temperature according to the corresponding relation between the preset temperature and the refreshing time length;
determining a first electric quantity value required for refreshing the electronic paper display module 201 at the current ambient temperature according to the product of the power of the electronic paper display module 201 and the time length;
comparing the first electric quantity value with a second electric quantity value currently remaining in the energy storage module 206;
and if the second electric quantity value is higher than the first electric quantity value, executing refreshing processing on the electronic paper display module.
Wherein, the correspondence between the temperature and the refreshing time length refers to: and under the corresponding temperature environment, refreshing the electronic paper display module 201 for the time required for completing one-time refreshing. For example, at 25 ℃, the time required for completing one refresh of a certain electronic paper display module 201 is 10 ms; at 10 ℃, the time required for the electronic paper display module 201 to complete one refresh is 25 ms; at 0 ℃, the time length required for the electronic paper display module 201 to complete one refresh is 50ms, and the like. Under different conditions, due to differences in the size, material, model, and the like of the electronic paper display module 201, the corresponding relationship between the temperature of the electronic paper display module 201 and the refresh duration may also be different; the specific correspondence between the temperature and the refresh time may be obtained in advance by actual measurement, calculation, or from data provided by the manufacturer of the electronic paper display module 201. In the main controller 204 of the passive display device 200, the correspondence between the temperature and the refresh time period may be stored in the form of a correspondence table or a correspondence curve.
In the above embodiment, the first electric quantity value required for refreshing the electronic paper display module 201 at the current ambient temperature is determined according to the product of the power of the electronic paper display module 201 and the time length, for example, the amount of energy Er required for refreshing may be calculated by the following formula:
Er＝Vr*Ir*tr
where Vr is the operating voltage of the passive display device 200, Ir is the operating current (which may be actually measured or obtained from data provided by the manufacturer of the electronic paper display module 201) when the electronic paper display module 201 refreshes, and tr is the length of time required to refresh the electronic paper display module 201 at the current ambient temperature.
In the above embodiment, since other modules or units (such as the main controller 204) of the passive display device 200, besides the e-paper display module 201, also need energy to operate normally. Therefore, in other embodiments, the second electric quantity value higher than the first electric quantity value may be: the second electric quantity value is larger than the first electric quantity value, and the difference value between the second electric quantity value and the first electric quantity value reaches a certain value (can be set).
In some embodiments, the inventors of the present application have discovered that in the passive display device 200 shown in fig. 5, the energy harvesting module 205 shares the first antenna 202 with the radio frequency communication interface 203. However, maintaining a certain communication bandwidth requires the first antenna 202 to have a lower inductance Q value; the first antenna 202 is required to have a high inductance Q value in order to maintain high energy transfer efficiency; this results in that the magnetic communication system having a high communication rate (i.e., the system of the passive display device 200 and the active electronic device 100) cannot efficiently transfer energy, and the magnetic communication system having a high energy transfer efficiency can only support a low communication rate.
To solve the above contradiction, as shown in fig. 6, in other embodiments, a second antenna 212 may be further disposed in the housing 210 of the passive display device 200, and the second antenna 212 is used for receiving the energy in the rf signal. In order to improve the energy transfer efficiency, the Q value of the inductance of the second antenna 212 is higher than a preset Q value threshold. Accordingly, the energy harvesting module 205 does not harvest energy from the first antenna 202, but rather converts the energy received by the second antenna 212 into direct current. Thus, the second antenna 212 and the energy harvesting module 205 cooperate to form a separate energy transmission channel, i.e., the energy transmission channel is separated from the data communication channel (i.e., the data communication channel formed by the first antenna 202 and the rf communication interface 203). As such, for the data communication channel, in order to maintain the communication bandwidth, the first antenna 202 may have a lower inductance Q value; for the energy transfer channel, the second antenna 212 may have a higher inductance Q value for improving energy transfer efficiency; therefore, the passive display device 200 according to the above embodiment of the present application can improve the energy transfer efficiency while ensuring the communication bandwidth, so that the passive display device 200 can obtain more energy under the same condition, thereby facilitating the refresh of the electronic paper display module 201.
In some embodiments, in order to further improve the energy receiving efficiency, there may be a certain coupling degree between the first antenna 202 and the second antenna 212, i.e., the coupling coefficient between the first antenna 202 and the second antenna 212 may be higher than a preset coupling coefficient threshold. The coupling coefficient threshold may be set as required, for example, in an exemplary embodiment, the coupling coefficient threshold may be set to 0.1, and accordingly, the coupling coefficient K between the first antenna 202 and the second antenna 212 should satisfy K > 0.1.
Accordingly, referring to fig. 7, in some embodiments, the energy harvesting module 205 may include a rectification unit 205a and an output control unit 205 b. The rectifying unit 205a may be configured to convert the energy received by the second antenna 212 into direct current. The output control unit 205b may be configured to monitor the radio frequency signal and control the on/off of the rectifying unit 205a according to the monitoring result. Of course, in other embodiments, the energy harvesting module 205 may have other configurations, for example, the energy harvesting module 205 may further include a matching circuit adapted to the second antenna 212 to further improve the energy transfer efficiency.
When the load of the passive display device 200 changes rapidly, the intensity of the radio frequency signal (i.e., the alternating magnetic field) provided by the active electronic apparatus 100 may be greatly affected, and thus the data communication between the active electronic apparatus 100 and the passive display device 200 may be interfered. Therefore, to avoid communication interference due to this cause, the energy harvesting module 205 may disconnect the energy draw from the second antenna 212 when the active electronic device 100 is in data communication with the passive display device 200.
In addition, during the start-up phase of the magnetic communication system, when the passive display device 200 has a heavy load, it may cause the rf communication interface 203 to be powered up slowly, and further, when the first antenna 202 has sent the first communication data, the rf communication interface 203 may not enter the normal operation state, thereby easily causing the data communication failure. Therefore, to avoid data communication failure due to this reason, the energy harvesting module 205 may disconnect power from the second antenna 212 before the passive display device 200 does not establish a communication connection with the active electronic device 100.
Further, when the load of the passive display device 200 is too heavy, power supply to the radio frequency communication interface 203 may be insufficient, and thus data communication may also fail. Therefore, in order to avoid data communication failure caused by such reasons, the energy collection module 205 may also disconnect the power from the second antenna 212 when the load of the passive display device 200 is too heavy and may cause the rf communication interface 203 to be powered down.
In summary, in order to avoid communication interference and data communication failure caused by the above reasons, the energy collection module 205 needs to monitor the rf signal by using the output control unit 205b, and control the on/off of the rectification unit 205a according to the monitoring result. Because the modulated signal and the handshake signal are present for a very short time, the energy harvesting module 205 may disconnect the energy from the second antenna 212 for a very short time (typically, the disconnection time is less than or equal to several milliseconds), and during this time, the passive display device 200 may still continue to operate based on the energy stored by the energy storage module 206 in the passive display device 200.
In some embodiments, the rectifying unit 205a may be any suitable passive ac-dc converting unit, such as a full-wave rectifying circuit, a bridge rectifying circuit, or an integrated passive rectifying module, and the like, which is not limited in this application.
Continuing to refer to fig. 7, in some embodiments, the output control unit 205b may include a demodulation module 2051, a protocol determination module 2052, a signal strength monitoring module 2053, an enable control module 2054, and a controllable switch 2055. The signal strength monitoring module 2053 may be configured to monitor a signal strength of the radio frequency signal, and output a first enable signal when the signal strength is higher than a preset strength threshold. The demodulation module 2051 may be used to convert radio frequency signals to baseband signals. The protocol determining module 2052 may be configured to decode the baseband signal, determine whether the baseband signal includes a modulation signal or a handshake signal based on a decoding result, and output a second enable signal if the baseband signal does not include the modulation signal and does not include the handshake signal. The enable control module 2054 may be configured to output an enable signal when the first enable signal is output by the confirmation signal strength monitoring module 2053 and the second enable signal is output by the protocol determination module 2052. The controllable switch 2055 is configured to switch on the rectifying unit 205a when receiving the enable signal.
In some embodiments, the signal strength monitoring module 2053 may be implemented using any suitable signal strength detection technology (e.g., WIFI signal strength detection technology, mobile network signal strength detection technology, etc.).
The signal strength monitoring module 2053 may monitor the signal strength of the rf signal by any one of the following methods:
1. the signal strength of the rf signal is monitored by the rf signal received by the first antenna 202.
2. The signal strength of the rf signal is monitored via the rf signal received by the second antenna 212.
3. The signal strength of the rf signal is monitored by receiving the rf signal through a communication sensing antenna (i.e., a third antenna is added, not shown in the figures of this specification) coupled to the first antenna 202. Generally, to improve transmission efficiency, the second antenna 212 has a higher inductance Q, which weakens its ability to receive rf signals. In addition, although the radio frequency signal can also be monitored based on the first antenna 202, in some scenarios, it is not suitable to change the circuit of the original data transmission channel (i.e. it is not suitable to modify the circuit of the output terminal of the first antenna 202). Therefore, in view of the above, in order to accurately receive the rf signal to facilitate accurate demodulation, the signal strength of the rf signal can be monitored by adding a communication sensing antenna.
In addition, in other embodiments of the present application, the signal strength may be replaced by other parameters such as a voltage value of the monitored rf signal. In this case, when the voltage value of the monitored rf signal is lower than the preset voltage value, the energy collection module 205 may be turned off to obtain energy from the second antenna 212.
In some embodiments, the demodulation module 2051 may be a demodulator implemented in hardware, software, or a combination of hardware and software.
In some embodiments, during the power-up phase of the magnetic communication system, a handshake is typically performed between the active electronic device 100 and the passive display apparatus 200 to establish a communication connection, thereby generating a handshake signal. After the communication connection is established, data transmission is possible between the active electronic device 100 and the passive display apparatus 200, and for facilitating the data transmission, the data needs to be modulated by a modulation signal before being transmitted, so that a modulated signal is generated. The above-mentioned handshaking and modulation are based on the predetermined protocol. Therefore, after the protocol determining module 2052 decodes the baseband signal, it can know whether the baseband signal includes a modulation signal and a handshake signal from a data packet obtained by decoding. When the baseband signal contains a handshake signal, the magnetic communication system is indicated to be in a power-on starting stage or a communication connection establishing stage; when the baseband signal contains the modulation signal, the magnetic communication system is indicated to be in a data transmission stage; when the baseband signal contains neither the modulation signal nor the modulation signal, the magnetic communication system is in a data transmission idle stage after the communication connection is established. Accordingly, the protocol determination module 2052 may determine whether to output the second enable signal.
In some embodiments, the processing logic of the protocol determination module 2052 may be implemented based on hardware, such as based on digital circuitry and/or analog circuitry. In other embodiments of the present application, the protocol determination module 2052 may also be implemented based on software; in other embodiments of the present application, the protocol determination module 2052 may also be implemented based on a combination of hardware and software.
In some embodiments, when it is determined that the signal strength monitoring module 2053 does not output the first enable signal or the protocol determination module 2052 does not output the second enable signal, the enable control module 2054 does not output the enable signal. When the enable control module 2054 does not output the enable signal, the controllable switch 2055 is kept in an off state, that is, the controllable switch 2055 is a normally open switch. Therein, the processing logic of the enable control module 2054 may be implemented on hardware, for example on digital and/or analog circuitry. In other embodiments of the present application, the protocol determination module 2052 may also be implemented based on software or a combination of software and hardware.
In some embodiments, controllable switch 2055 may be a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), a Bipolar Junction Transistor (BJT), a silicon controlled rectifier, an Insulated Gate Bipolar Transistor (IGBT), or the like).
It is contemplated that some active electronic devices, while having NFC functionality, are limited in their use. Therefore, for flexible data transmission, in some embodiments, as shown in fig. 8, a second communication interface 208 may be further disposed in the housing 210. In some embodiments, the second communication interface 208 may be a serial data interface, such as SPI, I2C, or the like. In other embodiments, the second communication interface 208 may also be a radio frequency interface that uses a different short-range wireless communication protocol with the radio frequency communication interface 203; for example, when the radio frequency communication interface 203 adopts the NFC protocol, the second communication interface 208 may adopt a bluetooth protocol, a bluetooth low energy protocol, a Zigbee protocol, a WiFi low energy protocol, or the like.
In some embodiments, the housing 210 may be a flexible body, for example, in some exemplary embodiments, the housing 210 may be made of silicone, TPU, etc., and has features of wear resistance, waterproof sealing, flexibility, and firmness. Accordingly, the electronic paper display module 201 and the like may also be made of a flexible substrate, so that the passive display device 200 may be bent and folded to adapt to different application scenarios, and is not easily broken. In some embodiments, the e-paper display module 201 may include a display driving circuit and an e-paper display screen, wherein the e-paper display screen may be a black and white e-paper display screen or a color e-paper display screen. In some exemplary embodiments, the housing 210 may be non-transparent in the non-display area of the housing 210, in addition to the display area for display, to cover the circuitry and other components. In addition, in other exemplary embodiments, the non-display area of the housing 210 may further have textures, patterns, letters, and the like formed thereon.
When the energy storage module 206 is implemented by using a capacitor, the dc voltage is unstable during charging and discharging of the capacitor, and the voltage is generally higher. Accordingly, in some embodiments, as shown in FIG. 9, a stabilizing circuit 209 may also be disposed within a housing 210 of the passive display device 200. Under the voltage stabilizing effect of the voltage stabilizing circuit 206, the dc power can be stabilized to a dc low voltage (e.g., 1.8 v-3.3 v dc power), so as to better power the passive display device 200.
In some embodiments, the first antenna 202, the second antenna 212, and the communication sensing antenna may be formed by a multi-turn coil printed on a flexible circuit board of the housing 210.
In some embodiments, the main controller 204 may be a low power microprocessor, and accordingly, the temperature sensor 207 may be a low power type, so as to minimize power consumption of the passive display device 200. In addition, other low power consumption modules or devices may be configured in the passive display device 200 as needed to implement corresponding functions, which is not limited in this application.
In some embodiments, in some cases, when the data to be displayed may be large, limited internal RAM space of the main controller 204, and it may be considered to refresh using dynamic memory transfer techniques. Specifically, on the active electronic device 100 side, the active electronic device 100 may provide a user with a User Interface (UI) through a client, based on which the user may customize the display content. When the user determines that certain display content is used as the data to be displayed, the client can divide the data to be displayed into a plurality of data slices. Accordingly, the active electronic device 100 may transmit the data to the main passive display device 200 one by one (or batch by batch) by rf signals; the main controller 204 of the passive display device 200 can store and process the data in batches, that is, the main controller 204 can dynamically divide the data stored in its internal RAM into pieces and sequentially transmit the pieces to the designated locations of the internal storage space of the e-paper display module 201, and after the data division is completed in batches, the main controller 204 will notify the e-paper display module 201 that the transmission is completed and instruct it to refresh the screen to output and display the data to be displayed.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
Based on the passive display device 200, the communication method according to some embodiments of the present application may include the following steps:
acquiring a radio frequency signal; the radio frequency signal comprises energy;
confirming whether the radio frequency signal contains data to be displayed;
when the radio frequency signal contains data to be displayed, acquiring the ambient temperature and the residual electric quantity;
and determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity.
In some embodiments, the determining whether to perform the refresh process according to the ambient temperature and the remaining power may include:
determining a first energy value required by refreshing the electronic paper display module at the current ambient temperature according to the corresponding relation between the preset temperature and the refreshing energy consumption;
comparing the first energy value with a second energy value currently remaining in the energy storage module;
and if the second energy value is higher than the first energy value, executing refreshing processing on the electronic paper display module.
In some embodiments, the determining whether to perform the refresh process according to the ambient temperature and the remaining power may include:
determining the time length required for refreshing the electronic paper display module at the current ambient temperature according to the corresponding relation between the preset temperature and the refreshing time length;
determining a first energy value required for refreshing the electronic paper display module at the current ambient temperature according to the product of the power of the electronic paper display module and the time length;
comparing the first energy value with a second energy value currently remaining in the energy storage module;
and if the second energy value is higher than the first energy value, executing refreshing processing on the electronic paper display module.
In some embodiments, please refer to fig. 10, before the acquiring the radio frequency signal, the communication method may further include the following steps:
when receiving the detection signal, returning a detection response;
receiving an authentication request;
and processing the authentication request and returning an authentication result.
To ensure that the displayed content of the passive display device 200 can only be rewritten by an authorized user, the passive display device 200 may perform security authentication on the active electronic device 100 that initiated the communication. The passive display device 200 can be accessed only after the active electronic apparatus 100 passes the security authentication.
In some embodiments, please refer to fig. 10, before the acquiring the radio frequency signal, the communication method may further include the following steps:
receiving configuration information;
and updating the configuration according to the configuration information, and returning an updating result.
The configuration information may be used to control the access of the active electronic device 100 to the passive display device 200 and the behavior control of the passive display device 200, and the configuration information further includes parameter information such as the correspondence between the temperature and the refresh energy consumption or the correspondence between the temperature and the refresh time, and the configuration parameter information may be stored in the main controller of the passive display device 200 in advance.
Based on the passive display device described above, a computer storage medium of some embodiments of the present application has a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring a radio frequency signal; the radio frequency signal comprises energy;
confirming whether the radio frequency signal contains data to be displayed;
when the radio frequency signal contains data to be displayed, acquiring the ambient temperature and the residual electric quantity;
and determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity.
While the process flows described above include operations that occur in a particular order, it should be appreciated that the processes may include more or less operations that are performed sequentially or in parallel (e.g., using parallel processors or a multi-threaded environment).
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical arrangement, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (21)
1. A passive display device, includes the casing, its characterized in that is provided with in the casing:
an electronic paper display module;
a first antenna;
the radio frequency communication interface is used for acquiring a radio frequency signal received by the first antenna; the radio frequency signal comprises energy;
the energy acquisition module is used for converting the energy in the radio frequency signal into direct current;
the energy storage module is used for storing the direct current;
the temperature sensor is used for acquiring the ambient temperature of the device;
and the main controller is used for determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity of the energy storage module when the radio frequency signal contains data to be displayed.
2. The passive display device according to claim 1, wherein the determining whether to perform a refresh process according to the ambient temperature and the amount of power remaining in the energy storage module comprises:
determining a first electric quantity value required for refreshing the electronic paper display module at the current ambient temperature according to a preset corresponding relation between the temperature and the refreshing energy consumption;
comparing the first electric quantity value with a second electric quantity value currently remaining in the energy storage module;
and if the second electric quantity value is higher than the first electric quantity value, executing refreshing processing on the electronic paper display module.
3. The passive display device according to claim 1, wherein the determining whether to perform a refresh process according to the ambient temperature and the amount of power remaining in the energy storage module comprises:
determining the time length required for refreshing the electronic paper display module at the current ambient temperature according to the corresponding relation between the preset temperature and the refreshing time length;
determining a first electric quantity value required for refreshing the electronic paper display module at the current ambient temperature according to the product of the power of the electronic paper display module and the time length;
comparing the first electric quantity value with a second electric quantity value currently remaining in the energy storage module;
and if the second electric quantity value is higher than the first electric quantity value, executing refreshing processing on the electronic paper display module.
4. The passive display device of claim 1, wherein the energy harvesting module comprises:
the Q value of the inductance of the second antenna is higher than a preset Q value threshold value, and the second antenna is used for receiving energy in the radio frequency signal;
the rectifying unit is used for converting the energy received by the second antenna into direct current;
and the output control unit is used for monitoring the radio frequency signal and controlling the on-off of the rectification unit according to a monitoring result.
5. The passive display device of claim 4, wherein the output control unit comprises:
the signal intensity monitoring module is used for monitoring the signal intensity of the radio frequency signal and outputting a first allowing signal when the signal intensity is higher than a preset intensity threshold value;
the demodulation module is used for converting the radio frequency signal into a baseband signal;
the protocol judgment module is used for decoding the baseband signal, confirming whether the baseband signal contains a modulation signal or a handshake signal based on a decoding result, and outputting a second permission signal if the baseband signal does not contain the modulation signal and does not contain the handshake signal;
the enabling control module is used for outputting an enabling signal when the signal strength monitoring module is confirmed to output a first enabling signal and the protocol judging module outputs a second enabling signal;
and the controllable switch is used for conducting the rectifying unit when the enabling signal is received.
6. The passive display device of claim 5, wherein the monitoring of the signal strength of the radio frequency signal comprises any one of:
monitoring the signal strength of the radio frequency signal received by the first antenna;
monitoring the signal strength of the radio frequency signal received by the second antenna;
monitoring the signal strength of the radio frequency signal received by the communication sensing antenna.
7. The passive display device of claim 4, wherein a coupling coefficient between the first antenna and the second antenna is above a preset coupling coefficient threshold.
8. The passive display device of claim 4, wherein the energy harvesting module further comprises a matching circuit adapted to the second antenna.
9. The passive display device of claim 1, further comprising, disposed within the housing:
a second communication interface coupled with the main controller for wireless communication with the outside.
10. The passive display device of claim 1, wherein the housing is a flexible body and the e-paper display module is a flexible substrate-based e-paper display module.
11. The passive display device of claim 1, wherein the e-paper display module is a black and white e-paper display module or a color e-paper display module.
12. The passive display device of claim 1, further comprising, disposed within the housing:
and the voltage stabilizing module is used for stabilizing the voltage of the direct current output by the energy acquisition module or the direct current stored by the energy storage module so as to supply energy to the device.
13. The passive display device of claim 1, wherein the energy storage module comprises one or more capacitors.
14. A method of communication, comprising:
acquiring a radio frequency signal; the radio frequency signal comprises energy;
confirming whether the radio frequency signal contains data to be displayed;
when the radio frequency signal contains data to be displayed, acquiring the ambient temperature and the residual electric quantity;
and determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity.
15. The communication method according to claim 14, wherein the determining whether to perform a refresh process according to the ambient temperature and the remaining power amount includes:
determining a first electric quantity value required by refreshing the electronic paper display module at the current ambient temperature according to the corresponding relation between the preset temperature and the refreshing energy consumption;
comparing the first electric quantity value with a second electric quantity value currently remaining in the energy storage module;
and if the second electric quantity value is higher than the first electric quantity value, executing refreshing processing on the electronic paper display module.
16. The communication method according to claim 14, wherein the determining whether to perform a refresh process according to the ambient temperature and the remaining power amount includes:
determining the time length required for refreshing the electronic paper display module at the current ambient temperature according to the corresponding relation between the preset temperature and the refreshing time length;
determining a first electric quantity value required for refreshing the electronic paper display module at the current ambient temperature according to the product of the power of the electronic paper display module and the time length;
comparing the first electric quantity value with a second electric quantity value currently remaining in the energy storage module;
and if the second electric quantity value is higher than the first electric quantity value, executing refreshing processing on the electronic paper display module.
17. The communication method of claim 14, prior to said acquiring radio frequency signals, further comprising:
when receiving the detection signal, returning a detection response;
receiving an authentication request;
and processing the authentication request and returning an authentication result.
18. The communication method of claim 17, after said returning an authentication result, further comprising:
receiving configuration information;
and updating the configuration according to the configuration information, and returning an updating result.
19. The communication method according to claim 14, wherein the data to be displayed includes:
and dividing the data to be displayed into one of a plurality of data slices.
20. A computer storage medium having a computer program stored thereon, the computer program, when executed by a processor, performing the steps of:
acquiring a radio frequency signal; the radio frequency signal comprises energy;
confirming whether the radio frequency signal contains data to be displayed;
when the radio frequency signal contains data to be displayed, acquiring the ambient temperature and the residual electric quantity;
and determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity.
21. An active electronic terminal, wherein the active electronic terminal is configured to provide a radio frequency signal to a passive display device; the radio frequency signal comprises energy; wherein the content of the first and second substances,
the passive display device comprises a shell, wherein the shell is internally provided with:
an electronic paper display module;
a first antenna;
the radio frequency communication interface is used for acquiring a radio frequency signal received by the first antenna;
the energy acquisition module is used for converting the energy in the radio frequency signal into direct current;
the energy storage module is used for storing the direct current;
the temperature sensor is used for acquiring the ambient temperature of the device;
and the main controller is used for determining whether to execute refreshing processing according to the environment temperature and the residual electric quantity of the energy storage module when the radio frequency signal contains data to be displayed.
Priority Applications (1)
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| CN201811628414.3A CN111383605A (en) | 2018-12-28 | 2018-12-28 | Passive display device, communication method, active electronic terminal and storage medium |
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| CN201811628414.3A CN111383605A (en) | 2018-12-28 | 2018-12-28 | Passive display device, communication method, active electronic terminal and storage medium |
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| CN116318274A (en) * | 2023-03-31 | 2023-06-23 | 深圳市每开创新科技有限公司 | Passive NFC chip, control method thereof and passive NFC device |
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