CN112752223A - ECALL implementation method, device and storage medium based on vehicle-mounted T-BOX - Google Patents
ECALL implementation method, device and storage medium based on vehicle-mounted T-BOX Download PDFInfo
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- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000004590 computer program Methods 0.000 claims description 17
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- 238000010586 diagram Methods 0.000 description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
Abstract
The invention discloses an ECALL implementation method, device and storage medium based on a vehicle-mounted T-BOX, wherein the method is executed by a vehicle-mounted T-BOX module of a vehicle-mounted T-BOX system; the method comprises the following steps: receiving an ECALL trigger signal; the ECALL trigger signal is correspondingly generated by a first key module of a vehicle-mounted ECU or the vehicle-mounted T-BOX system; switching a microphone of a vehicle-mounted machine system to the vehicle-mounted T-BOX system according to the ECALL trigger signal, and sending an audio signal to the vehicle-mounted machine system, so that the vehicle-mounted machine system drives a loudspeaker of the vehicle-mounted machine system to play a corresponding audio; sending the vehicle data to a service platform, so that the service platform performs corresponding processing according to the vehicle data; wherein the vehicle data includes at least vehicle identification information and vehicle location information. By adopting the technical scheme of the invention, a special ECALL realization circuit is not required, the cost can be reduced, and the vehicle arrangement space is saved.
Description
Technical Field
The invention relates to the technical field of automobile communication, in particular to an ECALL implementation method and device based on a vehicle-mounted T-BOX and a computer readable storage medium.
Background
With the increasing progress of automobile electronic technology and communication technology, the development of automobiles tends to be intelligentized and networked, and intelligent networked automobiles become the main choice of automobile owners gradually. Emergency rescue service, called EACLEL for short, is a phase-shifting basic service of an intelligent networked automobile, and is mainly used for notifying related personnel to perform emergency treatment by a collision signal or an active SOS (sequence of events) initiating instruction when the automobile encounters an emergency (such as a fault).
Currently, the smart internet automobiles generally implement emergency calls (i.e. implement ECALL) through the vehicle-mounted T-BOX, and in order to implement ECALL, the solution needs to provide a dedicated implementation circuit, for example, a separate microphone/speaker/ECALL button is required to be configured, which causes a cost increase and wastes the overall car layout space.
Disclosure of Invention
An embodiment of the present invention is directed to provide a method, an apparatus, and a computer-readable storage medium for implementing ECALL based on a vehicle-mounted T-BOX, which can reduce cost and save vehicle layout space without providing a dedicated ECALL implementation circuit.
In order to solve the technical problem, an embodiment of the present invention provides an ECALL implementation method based on a vehicle-mounted T-BOX, where the method is executed by a vehicle-mounted T-BOX module of a vehicle-mounted T-BOX system; the method comprises the following steps:
receiving an ECALL trigger signal; the ECALL trigger signal is correspondingly generated by a first key module of a vehicle-mounted ECU or the vehicle-mounted T-BOX system;
switching a microphone of a vehicle-mounted machine system to the vehicle-mounted T-BOX system according to the ECALL trigger signal, and sending an audio signal to the vehicle-mounted machine system, so that the vehicle-mounted machine system drives a loudspeaker of the vehicle-mounted machine system to play a corresponding audio;
sending the vehicle data to a service platform, so that the service platform performs corresponding processing according to the vehicle data; wherein the vehicle data includes at least vehicle identification information and vehicle location information.
Further, the switching a microphone of the in-vehicle system to the on-vehicle T-BOX system according to the ECALL trigger signal specifically includes:
acquiring the control authority of a microphone of the vehicle-mounted machine system according to the ECALL trigger signal;
disconnecting a microphone of the vehicle-mounted machine system from the vehicle-mounted machine system;
and establishing connection between a microphone of the vehicle-mounted machine system and the vehicle-mounted T-BOX system.
Further, the ECALL trigger signal is generated by the vehicle-mounted ECU when the airbag reaches the deployment condition.
Further, the ECALL trigger signal is correspondingly generated by the first key module of the vehicle-mounted T-BOX system when key operation information of a user is received.
Furthermore, the first key module is a physical key or a virtual key.
Further, the car machine system comprises a second key module; then the process of the first step is carried out,
the ECALL trigger signal is generated by the second key module of the car machine system correspondingly when the key operation information of the user is received.
Furthermore, the second key module is a physical key or a virtual key.
In order to solve the technical problem, the embodiment of the invention also provides an ECALL implementation device based on the vehicle-mounted T-BOX, and the device is arranged in a vehicle-mounted T-BOX module of a vehicle-mounted T-BOX system; the device comprises:
a trigger signal receiving unit for receiving an ECALL trigger signal; the ECALL trigger signal is correspondingly generated by a first key module of a vehicle-mounted ECU or the vehicle-mounted T-BOX system;
the audio control unit is used for switching a microphone of a vehicle-mounted machine system to the vehicle-mounted T-BOX system according to the ECALL trigger signal and sending an audio signal to the vehicle-mounted machine system, so that the vehicle-mounted machine system drives a loudspeaker of the vehicle-mounted machine system to play a corresponding audio;
the vehicle data sending unit is used for sending the vehicle data to a service platform so that the service platform can perform corresponding processing according to the vehicle data; wherein the vehicle data includes at least vehicle identification information and vehicle location information.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program; wherein the computer program, when running, controls an apparatus on which the computer-readable storage medium is located to perform any one of the above-mentioned ECALL implementation methods based on vehicle-mounted T-BOX.
The embodiment of the invention also provides an ECALL implementation device based on the vehicle-mounted T-BOX, which comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements any one of the ECALL implementation methods based on the vehicle-mounted T-BOX when executing the computer program.
Compared with the prior art, the embodiment of the invention provides an ECALL implementation method, device and computer readable storage medium based on vehicle-mounted T-BOX, which receives an ECALL trigger signal; the ECALL trigger signal is correspondingly generated by a first key module of a vehicle-mounted ECU or the vehicle-mounted T-BOX system; switching a microphone of a vehicle-mounted machine system to the vehicle-mounted T-BOX system according to the ECALL trigger signal, and simultaneously sending an audio signal to the vehicle-mounted machine system, so that the vehicle-mounted machine system drives a loudspeaker of the vehicle-mounted machine system to play a corresponding audio, and sending vehicle data to a service platform, so that the service platform performs corresponding processing according to the vehicle data; wherein the vehicle data includes at least vehicle identification information and vehicle location information; therefore, ECALL is realized, a special ECALL realizing circuit is not required to be arranged, the cost can be reduced, and the vehicle arrangement space is saved.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of an ECALL implementation method based on vehicle-mounted T-BOX provided by the invention;
FIG. 2 is a schematic structural diagram of a vehicle according to an embodiment of the present invention;
FIG. 3 is a block diagram of a preferred embodiment of an ECALL implementation device based on a vehicle-mounted T-BOX according to the present invention;
FIG. 4 is a block diagram of another preferred embodiment of an ECALL implementation device based on vehicle-mounted T-BOX provided by the invention.
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 any inventive step, are within the scope of the present invention.
The embodiment of the invention provides an ECALL implementation method based on a vehicle-mounted T-BOX, and is a flow chart of a preferred embodiment of the ECALL implementation method based on the vehicle-mounted T-BOX, which is shown in FIG. 1 and is executed by a vehicle-mounted T-BOX module of a vehicle-mounted T-BOX system; the method includes steps S11 to S13:
step S11, receiving an ECALL trigger signal; the ECALL trigger signal is correspondingly generated by a first key module of a vehicle-mounted ECU or the vehicle-mounted T-BOX system;
step S12, switching a microphone of a vehicle-mounted machine system to the vehicle-mounted T-BOX system according to the ECALL trigger signal, and sending an audio signal to the vehicle-mounted machine system, so that the vehicle-mounted machine system drives a loudspeaker of the vehicle-mounted machine system to play a corresponding audio;
step S13, sending the vehicle data to a service platform, so that the service platform carries out corresponding processing according to the vehicle data; wherein the vehicle data includes at least vehicle identification information and vehicle location information.
With reference to fig. 2, the vehicle according to the embodiment of the present invention includes a vehicle-mounted ECU, a vehicle-mounted T-BOX system, and a vehicle system, where the vehicle-mounted T-BOX system includes a vehicle-mounted T-BOX module and a first key module, the first key module is connected to the vehicle-mounted T-BOX module, the vehicle system includes a vehicle module, a microphone and a speaker, the microphone and the speaker are respectively connected to the vehicle module, the vehicle-mounted T-BOX module is respectively connected to the vehicle-mounted ECU, the vehicle module, and the microphone, and the vehicle-mounted T-BOX module is further connected to a service platform; specifically, the vehicle-mounted T-BOX module receives an ECALL trigger signal generated by a vehicle-mounted ECU or a first key module of the vehicle-mounted T-BOX system correspondingly, after receiving the ECALL trigger signal (namely ECALL trigger), the vehicle-mounted T-BOX module enters an emergency call mode, the vehicle-mounted T-BOX module switches a microphone of the vehicle system to the vehicle-mounted T-BOX system according to the received ECALL trigger signal, so that the microphone is used by the vehicle-mounted T-BOX system, meanwhile, the vehicle-mounted T-BOX module performs digital-to-analog conversion on call data to correspondingly obtain an audio signal (analog signal), the audio signal is sent to the vehicle module of the vehicle system in a twisted pair mode, after the vehicle module receives the audio signal, the audio signal is sent to a loudspeaker, the vehicle module supplies power to the loudspeaker, so as to drive the loudspeaker to play sound, and the vehicle-mounted T-BOX module sends the current vehicle data to a service platform (such as a TSP (short message service) platform and the like) before the call starts or in the call process, so that the service platform carries out corresponding processing according to the received vehicle data sent by the vehicle-mounted T-BOX module, and the vehicle data at least comprises vehicle identification information and vehicle position information so as to facilitate rescue processing of related rescuers.
According to the ECALL implementation method based on the vehicle-mounted T-BOX, the ECALL is triggered through the vehicle-mounted ECU or the first key module of the vehicle-mounted T-BOX system, communication is carried out through the microphone of the vehicle-mounted system, audio playing is carried out through the loudspeaker of the vehicle-mounted system, and vehicle data are sent to the service platform through the vehicle-mounted T-BOX module of the vehicle-mounted T-BOX system, so that the ECALL is implemented, a special ECALL implementation circuit is not needed, the cost can be reduced, the vehicle arrangement space is saved, and meanwhile, the technical scheme provided by the embodiment of the invention has the advantages of low complexity, small coupling and strong expansibility.
In another preferred embodiment, the switching a microphone of a car machine system to the on-board T-BOX system according to the ECALL trigger signal specifically includes:
acquiring the control authority of a microphone of the vehicle-mounted machine system according to the ECALL trigger signal;
disconnecting a microphone of the vehicle-mounted machine system from the vehicle-mounted machine system;
and establishing connection between a microphone of the vehicle-mounted machine system and the vehicle-mounted T-BOX system.
Specifically, with reference to the above embodiment, after the ECALL is triggered, when the car T-BOX module switches the microphone of the car machine system to the car T-BOX system, the control authority of the microphone of the car machine system is obtained according to the received ECALL trigger signal, then the connection between the microphone and the car machine system is disconnected to cut off the input to the car skill, and then the connection between the microphone and the car T-BOX module is established, so that the microphone is used by the car T-BOX system.
It should be noted that the vehicle-mounted T-BOX supplies power to the microphone, the MIC signal is input to the vehicle system in a BYPASS mode, and when ECALL is not triggered, the microphone is used by the vehicle system, such as a bluetooth phone; when ECALL triggers, the onboard T-BOX system cuts off the MIC signal to the vehicle system, which itself uses a microphone.
As an improvement of the above, the ECALL trigger signal is generated by the in-vehicle ECU when the airbag reaches the deployment condition.
Specifically, in combination with the above-described embodiment, when the onboard ECU triggers ECALL, the onboard ECU generates ECALL trigger signals according to a certain vehicle state, for example, when the vehicle has a collision accident during traveling, the airbag sensor receives an impact signal, and when a predetermined intensity is reached, the sensor operates to send a signal to the onboard ECU, and the electronic controller receives the signal, compares the signal with a signal stored in advance, and if an airbag deployment condition is reached, generates ECALL trigger signals accordingly, and sends the ECALL trigger signals to the onboard T-BOX system.
It should be noted that the vehicle-mounted ECU may generate the ECALL trigger signal according to other vehicle states, such as sudden vehicle failure, in addition to the ECALL trigger signal generated when the airbag reaches the deployment condition, and the embodiment of the present invention is not limited in particular.
As an improvement of the above solution, the ECALL trigger signal is generated by the first key module of the vehicle-mounted T-BOX system when receiving key operation information of the user.
Specifically, with reference to the above embodiment, when the ECALL is triggered by the first key module of the vehicle-mounted T-BOX system, the first key module may generate an ECALL trigger signal according to a key operation of the user, for example, when the vehicle has a fault, the user performs a key operation on the first key module, and the first key module responds to the key operation of the user to generate an ECALL trigger signal according to the corresponding key operation information, and sends the ECALL trigger signal to the vehicle-mounted T-BOX system.
Preferably, the first key module is a physical key or a virtual key.
In still another preferred embodiment, the car machine system includes a second key module; then the process of the first step is carried out,
the ECALL trigger signal is generated by the second key module of the car machine system correspondingly when the key operation information of the user is received.
Specifically, in combination with the foregoing embodiment, a second key module may be arranged in the car machine system (for example, a virtual key is added on an interface UI of the car machine system, or a physical key is arranged at a position of a roof light of a vehicle), and a user performs a key operation on the second key module to trigger ECALL.
Preferably, the second key module is a physical key or a virtual key.
The embodiment of the invention also provides an ECALL implementation device based on the vehicle-mounted T-BOX, which can implement all the processes of the ECALL implementation method based on the vehicle-mounted T-BOX in any one of the embodiments, and the effects and the technical effects of implementation of each unit in the device are respectively the same as those of the ECALL implementation method based on the vehicle-mounted T-BOX in the embodiments, and are not repeated herein.
Referring to fig. 3, it is a block diagram of a preferred embodiment of an ECALL implementation apparatus based on a vehicle-mounted T-BOX according to the present invention, the apparatus is disposed in a vehicle-mounted T-BOX module of a vehicle-mounted T-BOX system; the device comprises:
a trigger signal receiving unit 11, configured to receive an ECALL trigger signal; the ECALL trigger signal is correspondingly generated by a first key module of a vehicle-mounted ECU or the vehicle-mounted T-BOX system;
the audio control unit 12 is configured to switch a microphone of a car machine system to the vehicle-mounted T-BOX system according to the ECALL trigger signal, and send an audio signal to the car machine system, so that the car machine system drives a speaker of the car machine system to play a corresponding audio;
the vehicle data sending unit 13 is configured to send vehicle data to a service platform, so that the service platform performs corresponding processing according to the vehicle data; wherein the vehicle data includes at least vehicle identification information and vehicle location information.
Preferably, the audio control unit 12 is specifically configured to:
acquiring the control authority of a microphone of the vehicle-mounted machine system according to the ECALL trigger signal;
disconnecting a microphone of the vehicle-mounted machine system from the vehicle-mounted machine system;
and establishing connection between a microphone of the vehicle-mounted machine system and the vehicle-mounted T-BOX system.
Preferably, the ECALL trigger signal is generated by the vehicle-mounted ECU when the airbag reaches the deployment condition.
Preferably, the ECALL trigger signal is generated by the first key module of the vehicle-mounted T-BOX system when receiving key operation information of the user.
Preferably, the first key module is a physical key or a virtual key.
Preferably, the car machine system comprises a second key module; then the process of the first step is carried out,
the ECALL trigger signal is generated by the second key module of the car machine system correspondingly when the key operation information of the user is received.
Preferably, the second key module is a physical key or a virtual key.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program; when running, the computer program controls an apparatus on which the computer-readable storage medium is located to perform any one of the above-described implementation methods for ECALL based on vehicle-mounted T-BOX.
An embodiment of the present invention further provides an ECALL implementation apparatus based on a vehicle-mounted T-BOX, which is shown in fig. 4 and is a block diagram of another preferred embodiment of the ECALL implementation apparatus based on the vehicle-mounted T-BOX provided by the present invention, the apparatus includes a processor 10, a memory 20, and a computer program stored in the memory 20 and configured to be executed by the processor 10, and the processor 10, when executing the computer program, implements an ECALL implementation method based on the vehicle-mounted T-BOX according to any of the embodiments described above.
Preferably, the computer program can be divided into one or more modules/units (e.g. computer program 1, computer program 2,) which are stored in the memory 20 and executed by the processor 10 to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program in the apparatus.
The Processor 10 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, etc., the general purpose Processor may be a microprocessor, or the Processor 10 may be any conventional Processor, the Processor 10 is a control center of the apparatus, and various interfaces and lines are used to connect various parts of the apparatus.
The memory 20 mainly includes a program storage area that may store an operating system, an application program required for at least one function, and the like, and a data storage area that may store related data and the like. In addition, the memory 20 may be a high speed random access memory, may also be a non-volatile memory, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card), and the like, or the memory 20 may also be other volatile solid state memory devices.
It should be noted that the above-mentioned apparatus may include, but is not limited to, a processor and a memory, and those skilled in the art will understand that the structural block diagram of fig. 4 is only an example of the above-mentioned apparatus, and does not constitute a limitation of the apparatus, and may include more or less components than those shown, or combine some components, or different components.
To sum up, the eclall implementation method, the eclall implementation device and the computer-readable storage medium based on the vehicle-mounted T-BOX provided by the embodiments of the present invention trigger the eclall through the vehicle-mounted ECU or the first key module of the vehicle-mounted T-BOX system, perform communication through the microphone of the vehicle-mounted system, perform audio playing through the speaker of the vehicle-mounted system, and transmit the vehicle data to the service platform through the vehicle-mounted T-BOX module of the vehicle-mounted T-BOX system, thereby implementing the eclall without setting a dedicated eclall implementation circuit, reducing the cost, and saving the vehicle layout space.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An ECALL implementation method based on vehicle-mounted T-BOX is characterized in that the method is executed by a vehicle-mounted T-BOX module of a vehicle-mounted T-BOX system; the method comprises the following steps:
receiving an ECALL trigger signal; the ECALL trigger signal is correspondingly generated by a first key module of a vehicle-mounted ECU or the vehicle-mounted T-BOX system;
switching a microphone of a vehicle-mounted machine system to the vehicle-mounted T-BOX system according to the ECALL trigger signal, and sending an audio signal to the vehicle-mounted machine system, so that the vehicle-mounted machine system drives a loudspeaker of the vehicle-mounted machine system to play a corresponding audio;
sending the vehicle data to a service platform, so that the service platform performs corresponding processing according to the vehicle data; wherein the vehicle data includes at least vehicle identification information and vehicle location information.
2. The method for implementing ECALL based on vehicle-mounted T-BOX as claimed in claim 1, wherein the switching the microphone of the in-vehicle system to the vehicle-mounted T-BOX system according to the ECALL trigger signal specifically comprises:
acquiring the control authority of a microphone of the vehicle-mounted machine system according to the ECALL trigger signal;
disconnecting a microphone of the vehicle-mounted machine system from the vehicle-mounted machine system;
and establishing connection between a microphone of the vehicle-mounted machine system and the vehicle-mounted T-BOX system.
3. The vehicle T-BOX based ECALL implementation method as claimed in claim 1, wherein said ECALL trigger signal is generated by said vehicle ECU when an airbag reaches a deployment condition.
4. The method as claimed in claim 1, wherein the ECALL trigger signal is generated by a first key module of the vehicle-mounted T-BOX system when receiving key operation information of a user.
5. The vehicle-mounted T-BOX based ECALL implementation method as claimed in any one of claims 1 to 4, wherein the first key module is a physical key or a virtual key.
6. The vehicular T-BOX based ECALL implementation of claim 1, the in-vehicle system comprising a second key module; then the process of the first step is carried out,
the ECALL trigger signal is generated by the second key module of the car machine system correspondingly when the key operation information of the user is received.
7. The ECALL implementation method based on vehicular T-BOX as claimed in claim 6, wherein said second key module is a physical key or a virtual key.
8. An ECALL realizing device based on vehicle-mounted T-BOX is characterized in that the device is arranged in a vehicle-mounted T-BOX module of a vehicle-mounted T-BOX system; the device comprises:
a trigger signal receiving unit for receiving an ECALL trigger signal; the ECALL trigger signal is correspondingly generated by a first key module of a vehicle-mounted ECU or the vehicle-mounted T-BOX system;
the audio control unit is used for switching a microphone of a vehicle-mounted machine system to the vehicle-mounted T-BOX system according to the ECALL trigger signal and sending an audio signal to the vehicle-mounted machine system, so that the vehicle-mounted machine system drives a loudspeaker of the vehicle-mounted machine system to play a corresponding audio;
the vehicle data sending unit is used for sending the vehicle data to a service platform so that the service platform can perform corresponding processing according to the vehicle data; wherein the vehicle data includes at least vehicle identification information and vehicle location information.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored computer program; wherein the computer program when executed controls an apparatus on which the computer readable storage medium is located to perform the ECALL implementation method based on vehicle-mounted T-BOX according to any one of claims 1 to 7.
10. An ECALL implementation apparatus based on vehicle-mounted T-BOX, comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the ECALL implementation method based on vehicle-mounted T-BOX according to any one of claims 1 to 7 when executing the computer program.
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| CN113452832B (en) * | 2021-06-24 | 2022-07-08 | 亿咖通(湖北)技术有限公司 | Method and device for accessing android phone system by vehicle-mounted telematics device |
| CN114125615A (en) * | 2022-01-25 | 2022-03-01 | 湖北芯擎科技有限公司 | Vehicle-mounted interface data processing system and method and vehicle-mounted equipment |
| CN114125615B (en) * | 2022-01-25 | 2022-05-03 | 湖北芯擎科技有限公司 | Vehicle-mounted interface data processing system and method and vehicle-mounted equipment |
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Application publication date: 20210504 |