CN112540224A - Meter reading machine and detection method of ammeter data - Google Patents
Meter reading machine and detection method of ammeter data Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/066—Arrangements for avoiding or indicating fraudulent use
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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Abstract
The embodiment of the invention discloses a meter reading machine and a detection method of electric meter data, wherein the meter reading machine comprises: the photoelectric sensing module and the display module are electrically connected with the processing module; the photoelectric sensing module is used for acquiring the flashing times of a pulse lamp of the electric meter in a preset time interval and transmitting the acquired information to the processing module; the processing module is used for determining the error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module and transmitting the error rate of the electric meter to the display module; the display module is used for displaying the ammeter error rate transmitted by the processing module. The meter reading machine and the detection method of the ammeter data provided by the embodiment of the invention can determine the error rate of the ammeter in time, avoid starting ammeter inspection and shorten the electricity stealing time for troubleshooting.
Description
Technical Field
The embodiment of the invention relates to an ammeter detection technology, in particular to a meter reading machine and an ammeter data detection method.
Background
In the power grid, if the line loss of the transformer area is abnormal, the transformer area needs to be checked for electricity stealing behaviors, for example, the metering devices of the whole transformer area, including the electric meters, are checked by households to determine the error rate of the electric meters. Because some electricity meters in the transformer area may not be capable of displaying the current function of the electricity meters in turn, if a check meter is used for checking each electricity meter, the consumed time is too long. Therefore, a need exists for a device that can more quickly determine meter error rates to improve troubleshooting efficiency.
At present, the existing meter reading machine has the function of recording the pulse flicker frequency of an electric meter pulse lamp, and meanwhile, the meter reading machine can read the electric meter information through an infrared port, but cannot read the data of the pulse flicker frequency of a metering device, only can display partial data of the electric meter collected by the infrared port, and cannot determine the error rate of the electric meter.
Disclosure of Invention
The embodiment of the invention provides a meter reading machine and a detection method of ammeter data, and an ammeter error rate is determined in time, so that ammeter inspection is prevented from being started, and electricity stealing time in troubleshooting is shortened.
In a first aspect, an embodiment of the present invention provides a meter reading machine, including: the photoelectric sensing module and the display module are electrically connected with the processing module;
the photoelectric sensing module is used for acquiring the flashing times of a pulse lamp of the electric meter in a preset time interval and transmitting the acquired information to the processing module;
the processing module is used for determining the error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module and transmitting the error rate of the electric meter to the display module;
the display module is used for displaying the ammeter error rate transmitted by the processing module.
Optionally, the processing module is specifically configured to determine a time required for the pulse lamp to flash once according to the number of times of the pulse lamp that is transmitted by the photoelectric sensing module and is within a preset time interval, and determine an error rate of the electric meter according to the time required for the pulse lamp to flash once, the current data, the voltage data, the electric meter constant, and the information transmitted by the photoelectric sensing module; the current data and the voltage data are externally input or obtained by sensors.
Optionally, the meter error rate is W, [ (3600 × 1000)/(C × U × I) -t ]/t × 100%; wherein C is the ammeter constant, t is the time required for the pulse lamp to flash once, and U and I are voltage data and current data respectively.
Optionally, the photoelectric sensing module is an infrared sensing module or a photosensitive element, the infrared sensing module includes an infrared port, and the infrared sensing module is used for detecting the flash times of the pulse lamp within a preset time interval through the infrared port.
Optionally, the portable power meter further comprises a keyboard, the keyboard is electrically connected with the processing module, and the keyboard is used for receiving voltage data, current data and an electric meter constant which are input from the outside and transmitting the received data to the processing module.
Optionally, the processing module includes an ARM processor, and the ARM processor is configured to receive and store the current data, the voltage data, the electric meter constant, and the information transmitted by the photoelectric sensing module, and is further configured to store an electric meter error rate determined by the processing module.
Optionally, the current data is current data of a line inlet end of the ammeter, the unit of an ammeter constant is r/kW · h, and the number of times of flashing of the pulse lamp is related to the power consumption of the ammeter.
Optionally, the display module comprises a display screen.
In a second aspect, an embodiment of the present invention further provides a method for detecting meter data, where the method for detecting meter data is executed by the meter reading machine in the first aspect, and the method for detecting meter data includes:
the photoelectric sensing module acquires the flashing times of a pulse lamp of the ammeter within a preset time interval and transmits the acquired information to the processing module;
the processing module determines the error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module, and transmits the error rate of the electric meter to the display module;
the display module displays the ammeter error rate transmitted by the processing module.
Optionally, determining an error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module includes:
determining the time required for the pulse lamp to flicker once according to the flicker times of the pulse lamp transmitted by the photoelectric sensing module within a preset time interval;
and determining the error rate of the electric meter according to the time required by the pulse lamp to flicker once, the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module.
The meter reading machine and the detection method of the ammeter data provided by the embodiment of the invention comprise a photoelectric sensing module, a processing module and a display module, wherein the photoelectric sensing module and the display module are electrically connected with the processing module; the photoelectric sensing module acquires the flashing times of a pulse lamp of the ammeter within a preset time interval and transmits the acquired information to the processing module; the processing module determines the error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module, and transmits the error rate of the electric meter to the display module; the display module displays the ammeter error rate transmitted by the processing module. According to the meter reading machine and the detection method of the ammeter data provided by the embodiment of the invention, the processing module of the meter reading machine determines the ammeter error rate according to the current data, the voltage data, the ammeter constant and the information transmitted by the photoelectric sensing module, and transmits the ammeter error rate to the display module, and the display module displays the ammeter error rate transmitted by the processing module, so that related workers can obtain the ammeter error rate in time through the meter reading machine, the ammeter is prevented from being started for inspection, and the electricity stealing checking time is shortened.
Drawings
Fig. 1 is a block diagram of a meter reading machine according to an embodiment of the present invention;
fig. 2 is a block diagram of a meter reading machine according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a meter reading machine according to a second embodiment of the present invention;
fig. 4 is a flowchart of a method for detecting electric meter data according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a block diagram of a meter reading machine according to an embodiment of the present invention, which is applicable to meter data detection and the like, the meter reading machine includes: the photoelectric sensing module 10, the processing module 20 and the display module 30, wherein the photoelectric sensing module 10 and the display module 30 are electrically connected with the processing module 20.
The photoelectric sensing module 10 is configured to obtain a number of flashing times of a pulse lamp of the electric meter within a preset time interval, and transmit obtained information to the processing module 20; the processing module 20 is used for determining the error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module, and transmitting the error rate of the electric meter to the display module 30; the display module 30 is used for displaying the meter error rate transmitted by the processing module 20.
Specifically, the current data is the current data of the incoming line end of the ammeter so as to ensure that the current is the actual current of the ammeter, and if the current of the ammeter is directly obtained, the error rate of the ammeter cannot be determined. The current data of the inlet wire end of the ammeter can be obtained by measuring through a clamp ammeter. The unit of the constant of the electric meter is r/kW.h, and the flickering times of the pulse lamp are related to the electricity consumption of the electric meter, for example, the electric meter flickers once every one-degree electric pulse lamp. The current data, voltage data, and meter constants may be externally input, or the current data and voltage data may be obtained by sensors. Since the voltage data (e.g. 380V, 220V) and the meter constants are fixed, the voltage data and the meter constants can be pre-stored in the meter reading machine for being called at any time. When the line loss of the distribution area in the power system is abnormal and the distribution area needs to be checked for electricity stealing behaviors, the metering devices of the whole distribution area, including the electric meters, can be checked family by family to determine the error rate of the electric meters. The photoelectric sensing module 10 of the meter reading machine can acquire the flashing times of the pulse lamp of the electric meter in a preset time interval such as 5s, the processing module 20 can determine the time required for flashing the pulse lamp once according to the flashing times of the pulse lamp transmitted by the photoelectric sensing module 10 in the preset time interval, and the error rate of the electric meter is determined according to the time required for flashing the pulse lamp once, current data, voltage data, an electric meter constant and information transmitted by the photoelectric sensing module. If the meter error rate is represented as W, the expression of the meter error rate W is [ (3600 × 1000)/(C × U × I) -t ]/t × 100%; c is an ammeter constant, t is the time required by flashing of the pulse lamp once, U and I are respectively voltage data and current data, so that the processing module 20 determines the ammeter error rate according to the expression of the ammeter error rate W and the corresponding numerical values such as C, U, I, t in the expression, the ammeter error rate is transmitted to the display module 30, the display module 30 can display the ammeter error rate transmitted by the processing module 20, related workers can obtain the ammeter error rate in time through a meter reading machine, whether the ammeter has a misalignment phenomenon or not is determined, compared with a method for detecting the ammeter error rate by using a check meter, the detection time is greatly reduced, the electricity stealing time is shortened, meanwhile, the ammeter is prevented from being started for detection, and the work of punishment of electricity behaviors at later positions is facilitated.
It should be noted that, the specific value of the preset time interval may be set according to actual situations, and is not limited herein.
The meter reading machine provided by the embodiment comprises a photoelectric sensing module, a processing module and a display module, wherein the photoelectric sensing module and the display module are electrically connected with the processing module; the photoelectric sensing module acquires the flashing times of a pulse lamp of the ammeter within a preset time interval and transmits the acquired information to the processing module; the processing module determines the error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module, and transmits the error rate of the electric meter to the display module; the display module displays the ammeter error rate transmitted by the processing module. The meter reading machine provided by the embodiment, the processing module determines the error rate of the ammeter according to the current data, the voltage data, the ammeter constant and the information transmitted by the photoelectric sensing module, the error rate of the ammeter is transmitted to the display module, the display module displays the error rate of the ammeter transmitted by the processing module, so that related workers can obtain the error rate of the ammeter in time through the meter reading machine, whether the ammeter has a misalignment phenomenon is determined, compared with a method for detecting the error rate of the ammeter by using a check meter, the detection time is greatly shortened, the ammeter is prevented from being started for detection while the electricity stealing time is shortened, and the work of electricity stealing behaviors at punishment places is facilitated later.
Example two
Fig. 2 is a structural block diagram of a meter reading machine according to a second embodiment of the present invention, and fig. 3 is a structural schematic diagram of a meter reading machine according to a second embodiment of the present invention, and based on the first embodiment, with reference to fig. 2 and fig. 3, optionally, the photoelectric sensing module 10 is an infrared sensing module 11 or a photosensitive element, the infrared sensing module 11 includes an infrared port 12, and the infrared sensing module 11 is configured to detect a number of times of flashing of the pulse lamp within a preset time interval through the infrared port 12.
The infrared sensing module 11 can detect the number of times of flashing of a pulse lamp of the meter reading machine within a preset time interval through the infrared port 12, and can also detect the time required for flashing of the pulse lamp of the meter reading machine once, the infrared sensing module 11 can also detect the current in the electric meter, the current data used by the meter reading machine when the error rate of the electric meter is determined is the current data of the inlet end of the electric meter, the infrared sensing module 11 can transmit the detected current in the electric meter to the processing module 20, and the processing module 20 can store the current data of the inlet end of the electric meter and the current in the electric meter, so that relevant workers can know the current data of the inlet end of the electric meter and the use condition of the current in the electric meter by calling the current data stored in the processing module 20.
Optionally, the meter reading machine further includes a keyboard 40, the keyboard 40 is electrically connected to the processing module 20, and the keyboard 40 is configured to receive voltage data, current data and an electric meter constant input from the outside, and transmit the received data to the processing module 20.
Specifically, the keypad 40 may receive external inputs such as voltage data, current data, and meter constants input by an associated operator and transmit the received data to the processing module 20, thereby enabling the processing module 20 to determine a meter error rate based on the data transmitted by the keypad 40. As shown in the schematic diagram of the electric meter in fig. 3, the keyboard 40 is a numeric key area of the electric meter, and the processing module 20 can obtain externally input data through the keyboard 40, so that the operation is simple and convenient.
Optionally, the processing module 20 includes an ARM processor 21, and the ARM processor 21 is configured to receive and store the current data, the voltage data, the meter constant, and the information transmitted by the photoelectric sensing module, and is further configured to store the meter error rate determined by the processing module 20.
The ARM processor 21 is small in size, low in power consumption, low in cost and high in performance, supports a 16-bit/32-bit double instruction set, can be well compatible with 8-bit/16-bit devices, can receive and store current data, voltage data, an electric meter constant and information transmitted by the photoelectric sensing module, and is also used for storing an electric meter error rate determined by the processing module 20, so that relevant workers can call and check the data at any time.
Optionally, the display module 30 includes a display screen 31.
Specifically, the display screen 31 may be an LCD display screen, and the LCD display screen has the advantages of stable and non-flickering picture, uneasy distortion, zero radiation, low energy consumption, small heat dissipation, and the like. The LCD display screen can display the meter error rate transmitted by the processing module 20, so that the related staff can check the meter error rate in time through the display screen 31 of the meter reading display module 30.
In addition, the meter reading machine is also provided with a power switch key, a reset key, an indicator light, a battery cover, an integrated anti-skidding handle, a buzzer, a hand rope position, a battery position, an external connector and the like, and the power switch key, the reset key, the indicator light, the buzzer and the external connector are all electrically connected with the processing module. Referring to fig. 3, the meter reading machine can be powered by a battery, a power switch key is pressed, and when the processing module receives a start signal of the power switch key, the processing module can control the meter reading machine to start working; the indicating lamp can indicate the working state of the meter reading machine through the control of the processing module, and if the indicating lamp is on when the meter reading machine works and the indicating lamp is off when the meter reading machine does not work, the indicating lamp is on or off, so that related working personnel can conveniently know the working state of the meter reading machine through the on or off of the indicating lamp; the integral anti-slip handle can facilitate related personnel to hold the meter reading machine, data stored in a processing module of the meter reading machine can be transmitted through an external connecting port, and for example, a worker calls the data stored in the meter reading machine through the external connecting port so as to analyze the data.
In the meter reading machine provided by the embodiment, the processing module determines the error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module, and transmits the error rate of the electric meter to the display module, and the display module displays the error rate of the electric meter transmitted by the processing module, so that related workers can obtain the error rate of the electric meter in time through the meter reading machine and determine whether the electric meter has a misalignment phenomenon; the meter reading machine also comprises a keyboard, wherein the keyboard is electrically connected with the processing module, the keyboard can receive voltage data, current data and an ammeter constant input from the outside and transmit the received data to the processing module, so that the processing module determines an ammeter error rate according to the data transmitted by the keyboard, and the processing module can acquire the data input from the outside through the keyboard, and the operation is simple and convenient.
EXAMPLE III
Fig. 4 is a flowchart of a method for detecting meter data according to a third embodiment of the present invention, where the present embodiment is applicable to aspects such as meter data detection, the method for detecting meter data is executed by a meter reading machine according to any embodiment, and the method for detecting meter data specifically includes the following steps:
and 110, acquiring the flashing times of a pulse lamp of the ammeter within a preset time interval by the photoelectric sensing module, and transmitting the acquired information to the processing module.
The flickering frequency of the pulse lamp is related to the electricity consumption of the electricity meter, for example, the pulse lamp flickers once every hour of electricity consumption of the electricity meter; the photoelectric sensing module can acquire the flicker times of the pulse lamp of the electric meter in the preset time interval based on the photoelectric sensing principle, and transmits the obtained flicker times of the pulse lamp in the preset time interval to the processing module, so that the processing module determines the error rate of the electric meter.
And step 120, the processing module determines the error rate of the electric meter according to the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module, and transmits the error rate of the electric meter to the display module.
Specifically, the current data is the current data of the inlet wire end of the ammeter, the unit of the ammeter constant is r/kW.h, and the specific numerical value of the ammeter constant can be determined by the actual ammeter model, such as the ammeter constant is 800 r/kW.h or 1200 r/kW.h. The current data, voltage data, and meter constants may be externally input, or the current data and voltage data may be obtained by sensors. Since the voltage data (e.g. 380V, 220V) and the meter constants are fixed, the voltage data and the meter constants can be pre-stored in the meter reading machine for being called at any time. When the line loss of the distribution area in the power system is abnormal and the distribution area needs to be checked for electricity stealing behaviors, the metering devices of the whole distribution area, including the electric meters, can be checked family by family to determine the error rate of the electric meters. The photoelectric sensing module 10 of the meter reading machine can acquire the flashing times of the pulse lamp of the electric meter within a preset time interval such as 5s, and the processing module can determine the time required for flashing the pulse lamp once according to the flashing times of the pulse lamp transmitted by the photoelectric sensing module within the preset time interval; and determining the error rate of the electric meter according to the time required by the pulse lamp to flicker once, the current data, the voltage data, the electric meter constant and the information transmitted by the photoelectric sensing module. If the meter error rate is represented as W, the expression of the meter error rate W is [ (3600 × 1000)/(C × U × I) -t ]/t × 100%; where C is the meter constant, t is the time required for the pulsed lamp to flash once, and U and I are the voltage data and the current data, respectively, so that the processing module 20 determines the meter error rate according to the expression of the meter error rate W and the corresponding values in the expression, such as C, U, I, t, and transmits the determined meter error rate to the display module.
And step 130, displaying the ammeter error rate transmitted by the processing module by the display module.
Wherein, display module can show the ammeter error rate of processing module transmission to relevant staff can in time obtain the ammeter error rate through checking the table machine, shortens the investigation and steals the electric time, avoids opening the ammeter inspection simultaneously, and the work of the electricity behavior is stolen to punishment after the convenience.
The method for detecting electric meter data provided by this embodiment and the meter reading machine provided by any embodiment of the present invention belong to the same inventive concept, and have corresponding beneficial effects, and detailed technical details in this embodiment are not described in the meter reading machine provided by any embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A meter reading machine is characterized by comprising: the photoelectric sensing module and the display module are electrically connected with the processing module;
the photoelectric sensing module is used for acquiring the flashing times of a pulse lamp of the electric meter in a preset time interval and transmitting the acquired information to the processing module;
the processing module is used for determining an ammeter error rate according to the current data, the voltage data, the ammeter constant and the information transmitted by the photoelectric sensing module, and transmitting the ammeter error rate to the display module;
the display module is used for displaying the ammeter error rate transmitted by the processing module.
2. The meter reading machine of claim 1, wherein the processing module is specifically configured to determine a time required for the pulse lamp to flash once according to the number of times of flashing of the pulse lamp within a preset time interval, which is transmitted by the photoelectric sensing module, and determine an electric meter error rate according to the time required for the pulse lamp to flash once, the current data, the voltage data, the electric meter constant, and information transmitted by the photoelectric sensing module; the current data and the voltage data are either externally input or obtained by a sensor.
3. The machine of claim 1, wherein said meter error rate is W, [ (3600 x 1000)/(C U x I) -t ]/t x 100%; wherein C is an ammeter constant, t is a time required for the pulse lamp to blink once, and U and I are the voltage data and the current data, respectively.
4. The meter reading machine of claim 1, wherein the photoelectric sensing module is an infrared sensing module or a photosensitive element, the infrared sensing module comprises an infrared port, and the infrared sensing module is configured to detect a number of times of flashing of the pulse lamp within a preset time interval through the infrared port.
5. The meter reading machine of claim 1, further comprising a keyboard electrically connected to the processing module, the keyboard configured to receive externally input voltage data, current data, and meter constants and transmit the received data to the processing module.
6. The meter reading machine of claim 1, wherein the processing module comprises an ARM processor configured to receive and store the current data, the voltage data, the meter constants, and information transmitted by the photoelectric sensing module, and further configured to store a meter error rate determined by the processing module.
7. The meter of claim 1, wherein the current data is current data at a line inlet of the meter, the meter constant is in r/kW-h, and the number of flashes of the pulsed light is related to the power usage of the meter.
8. The meter of claim 1, wherein the display module includes a display screen.
9. A method for detecting meter data, wherein the method is performed by the meter reading machine of any one of claims 1-8, and the method comprises:
the photoelectric sensing module acquires the flashing times of a pulse lamp of the ammeter within a preset time interval and transmits the acquired information to the processing module;
the processing module determines an ammeter error rate according to the current data, the voltage data, the ammeter constant and the information transmitted by the photoelectric sensing module, and transmits the ammeter error rate to the display module;
and the display module displays the ammeter error rate transmitted by the processing module.
10. The method for detecting meter data of claim 9, wherein said determining a meter error rate based on said current data, said voltage data, said meter constant and said information transmitted by said photo-sensing module comprises:
determining the time required for the pulse lamp to flicker once according to the flicker times of the pulse lamp in a preset time interval, which are transmitted by the photoelectric sensing module;
and determining the error rate of the electric meter according to the time, current data, voltage data, electric meter constant and information transmitted by the photoelectric sensing module, wherein the time, the current data, the voltage data and the electric meter constant are required for the pulse lamp to flicker once.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114062997A (en) * | 2021-11-05 | 2022-02-18 | 中国南方电网有限责任公司超高压输电公司广州局 | Method, system and device for checking electric energy meter |
| CN114063001A (en) * | 2021-11-26 | 2022-02-18 | 广东电网有限责任公司 | System and method for restoring electricity stealing working condition |
| CN114285030A (en) * | 2021-12-20 | 2022-04-05 | 广东电网有限责任公司 | Power grid map-based power failure and recovery station area display method, device and system |
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| CN206348374U (en) * | 2016-11-30 | 2017-07-21 | 上海新增鼎数据科技有限公司 | A kind of acquisition system based on photoimpact ammeter electric quantity metering result |
| CN108593989A (en) * | 2018-05-23 | 2018-09-28 | 国网天津市电力公司 | 10kV transformer efficiencies and current methods are calculated using ammeter pulse flicker interval |
| CN110231504A (en) * | 2019-07-09 | 2019-09-13 | 国网河北省电力有限公司邢台供电分公司 | Detect the method and stealing detection device of electricity stealing |
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Application publication date: 20210323 |