CN210375509U - Meter structure with wireless radio frequency - Google Patents
Meter structure with wireless radio frequency Download PDFInfo
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- CN210375509U CN210375509U CN201921278864.4U CN201921278864U CN210375509U CN 210375509 U CN210375509 U CN 210375509U CN 201921278864 U CN201921278864 U CN 201921278864U CN 210375509 U CN210375509 U CN 210375509U
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Abstract
The utility model relates to a meter structure with wireless radio frequency, which comprises a surface; the wireless radio frequency element is connected with the inside or outside of the surface; the pointer is arranged on the surface and provided with a moving path along the closed circuit of the radio frequency element, and the pointer is correspondingly arranged at one end of the closed circuit and provided with a connectable electric section which can be electrically connected with the closed circuit of the radio frequency element; the wireless radio frequency identification tag module is arranged at a preset position on the surface and is electrically connected with the wireless radio frequency element; while directly observing the meter pointer, the closed loop of the wireless radio frequency element can be triggered through the pointer position, and one or more signal modules are used for returning the wireless radio frequency label signal; the wire and the energy consumption can be saved, and the purpose of monitoring is achieved; aiming at the control objects which are scattered and have no power supply, the control function can be implemented, and the related signals are connected to the control system to achieve the purpose of management.
Description
Technical Field
The utility model discloses a state monitoring and data repayment device correlation field especially indicate one kind can be applied to pressure gauge or level gauge, thermometer, hygrometer etc. possess wireless radio frequency meter structure.
Background
Considering a situation where it is necessary to monitor the status of a certain apparatus, for example, the pressure of a reaction vessel in a process should be maintained within a proper pressure range, a pressure gauge is usually installed on the reaction vessel for displaying the pressure value, and the engineer regularly visits the pressure gauge value. However, this method requires high personnel cost and has the possibility of errors in observation or judgment.
In another conventional method, an electronic monitoring device or instrument is used, and a monitoring unit is disposed on the fin on the pressure gauge, so that when the pressure exceeds a critical value, a signal is generated to notify or warn. The electronic monitoring has the advantages that the monitored device can be automatically monitored, and monitoring information can be obtained in real time; however, the sensing unit is driven to generate monitoring action only by providing power, and if the sensing unit has a small volume, the sensing unit is difficult to connect with a power supply; if the battery is used, the battery will have insufficient endurance; similarly, the same problem is associated with the use of level gauges.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an utensil wireless radio frequency meter gauge structure, when the meter gauge pointer of direct observation pressure gauge or level gauge, more can trigger the closed circuit of wireless radio frequency component via the pointer position to one or more signal module passback RFID (wireless radio frequency identification) signal.
Moreover, the wire and the energy consumption can be saved, and the purpose of monitoring is achieved; especially for the distributed objects without power supply, it can also implement the control function and connect the related signals to the control system to achieve the purpose of management; in addition, the aim of auxiliary management can be achieved in the power-off state.
To achieve the above object, the present invention provides a meter structure with a wireless radio frequency meter, which comprises a surface having a marking area; a radio frequency element connected to the inside or outside of the surface and corresponding to the mark area; a pointer, which is installed on the surface and has a moving path along a closed loop of the radio frequency element, and one end of the pointer, which is correspondingly installed on the closed loop, has a connectable electrical section, which can be electrically connected with the closed loop of the radio frequency element; and at least one radio frequency identification tag module arranged at a preset position of the surface and electrically connected with the radio frequency element.
In some embodiments, the at least one radio frequency identification tag module is a single Radio Frequency Identification (RFID) tag module having a single chip, a single substrate disposed at the predetermined location of the surface, and a single open contact, the chip being bonded to the substrate, the chip being electrically connected to the radio frequency component and the open contact to form the closed circuit, the connectable electrical section of the pointer implementing the moving path between the open contact and the chip.
In some embodiments, the at least one radio frequency identification tag module is a single Radio Frequency Identification (RFID) tag module, the single RFID tag module has a plurality of chips, a single substrate and a plurality of open contacts, the substrate is disposed at the predetermined position of the surface, one of the chips is bonded to the substrate and electrically connected to the rf device, and the other chips are electrically connected to the rf device through the open contacts to form the closed circuit, the chips are disposed at equal angular intervals, the chips have different rf tag data, and the connectable electrical section of the pointer implements the moving path between each open contact and the corresponding chip.
In some embodiments, it is implemented in a pressure gauge.
To achieve the above object, the present invention provides a meter structure with a wireless radio frequency meter, which comprises a sensing connecting rod, a marking area, a first detecting area and a second detecting area; a float, which contains two magnetic elements oppositely arranged and is sleeved outside the sensing connecting rod so that the float can move up and down to form a moving path; a radio frequency element disposed at a predetermined position in the sensing link; and a single RFID tag module disposed in the sensing link and electrically connected to the RFID element, wherein the RFID tag module has a substrate, a plurality of chips and a plurality of open contacts, the substrate is disposed at the predetermined position of the sensing link, one of the chips is bonded to the substrate and electrically connected to the RFID element, and the other chips are electrically connected to the RFID element through the open contacts to form a closed circuit, the chips have different RFID tag data, so that when the float implements the moving path, the chips, the open contacts and the two magnetic elements interact to generate different signals.
In certain embodiments, it is implemented in a liquid level meter.
To achieve the above object, the present invention provides a meter structure with a wireless radio frequency meter, which comprises a surface having a marking area; a radio frequency element linearly arranged at a predetermined position of the surface and corresponding to the marking area; a pointer, which is arranged on the surface and has a moving path along the linear direction, and the pointer is provided with a connectable electrical section at one end of a closed loop correspondingly arranged on the radio frequency element, and can be electrically connected with the closed loop of the radio frequency element; and a single radio frequency identification tag module electrically connected to the radio frequency device, wherein the single radio frequency identification tag module has a plurality of chips, a single substrate and a plurality of open contacts, the substrate is disposed at the predetermined position of the surface, one of the chips is bonded to the substrate and electrically connected to the radio frequency device, and the other chips are electrically connected to the radio frequency device through the open contacts to form the closed circuit, all the chips are linearly disposed at intervals, the chips have different radio frequency identification data, and the connectable electrical section of the pointer implements the moving path between each open contact and the corresponding chip.
In certain embodiments, it is implemented in a liquid level meter.
By adopting the technical means, the utility model saves the wire and the energy consumption, and achieves the purpose of monitoring; especially for the distributed objects without power supply, it can also implement the control function and connect the related signals to the control system to achieve the purpose of management; in addition, the aim of auxiliary management can be achieved in the power-off state.
Drawings
Fig. 1 is a schematic diagram of a conventional Radio Frequency Identification (RFID) tag module.
Fig. 2 is a schematic diagram of a first embodiment of a rfid tag module with a structure of a radio frequency meter according to the present invention.
Fig. 3 is a schematic diagram of a second embodiment of a rfid tag module with a structure of a radio frequency meter according to the present invention.
Fig. 4 is a schematic diagram of a third embodiment of the rfid tag module with a structure of the meter of the present invention.
Fig. 5 is a schematic diagram of the utility model with a structure of a radio frequency meter corresponding to the application of fig. 2.
Fig. 6 is a schematic diagram of the application of the structure of the meter with radio frequency according to fig. 3 of the present invention.
Fig. 7 is a schematic diagram of the application of the structure of the meter with radio frequency of the present invention corresponding to fig. 4.
Fig. 8 is a schematic diagram of a fourth embodiment of the structure of the radio frequency meter of the present invention.
Fig. 9 is a schematic diagram of a fifth embodiment of the structure of the radio frequency meter of the present invention.
Fig. 10 is a schematic diagram of the structure of the meter with rf meter according to the present invention.
[ notation ] to show
100 utensil wireless radio frequency meter structure
1 surface of
1' sensing connecting rod
2 radio frequency element
3 pointer
31 connectable electrical section
3' float
31 ', 32' magnetic element
4 wireless radio frequency identification label module
4A ~4C wireless radio frequency identification label module
41 wafer
41A-41G wafer
42 substrate
43 break contact
43A-43F open contact
5 reader
6 management system
300 Radio Frequency Identification (RFID) tag module
310 antenna
320 wafer
330 capacitors.
Detailed Description
Referring to fig. 1, a conventional Radio Frequency Identification (RFID) tag module 300 includes an antenna 310, a chip (RFID chip)320 and a capacitor 330, which are electrically connected to each other, the chip 320 has a radio frequency identification signal, and the capacitor 330 can store electric energy, so that the Radio Frequency Identification (RFID) tag module 300 can be continuously operated without power supply (e.g., power off), thereby achieving the purpose of auxiliary management.
The following describes an embodiment of the present invention in which the structure 100 is implemented in a pressure gauge.
Please refer to fig. 2 and 5, which illustrate a first embodiment of the present invention; the utility model discloses an utensil wireless radio frequency meter structure 100 includes a surface 1, a wireless radio frequency component 2, a pointer 3 and at least a wireless radio frequency identification label module 4.
In this embodiment, the surface 1 is circular, and the surface 1 may be provided with a mark region (not shown), and the mark region may mark numerical values, such as the magnitude of pressure, and may further mark a low pressure region and a high pressure region, which are conventional features and therefore will not be described herein again; the surfaces in the following embodiments are also conventional and thus are not shown in the drawings and will be described in detail.
The radio frequency device 2 is disposed around the inner circumference of the surface 1 (in this embodiment) or disposed outside the surface 1 (not shown), and corresponds to the indication region, that is, in this embodiment, the radio frequency device 2 may surround the indication region, but is not limited thereto.
The pointer 3 is pivotally arranged on the surface 1 and has a moving path along a closed loop of the radio frequency element 2; the pointer 3 is disposed at an end of the closed circuit of the rf device 2, and has a connectable electrical section 31, the connectable electrical section 31 is electrically connected to the closed circuit of the rf device 2, and the connection status will be described in detail later.
The at least one rfid tag module 4 is disposed at a predetermined position on the surface 1 (as shown in fig. 5), and is electrically connected to the rf device 2.
In this embodiment, the at least one RFID tag module 4 is a single RFID tag module, and the single RFID tag module 4 has a single chip 41, a single substrate 42 and a single open contact 43, the substrate 42 is disposed at the predetermined position on the surface 1, the chip 41 has predetermined RFID tag data and is connected (bonding) to the substrate 42, the chip 41 is electrically connected to the rf device 2 and the open contact 43, and the connectable electrical section 31 of the pointer 3 implements the moving path between the open contact 43 and the chip 41 to form a closed circuit (i.e. forming the aforementioned closed circuit); therefore, the situation that the read signal indicates the presence of the state or no read signal indicates the presence of the state is set, so that the reader 5 (as shown in fig. 10) reads the corresponding wireless radio frequency tag data of the chip 41 and transmits the data to the management system 6 (as shown in fig. 10) electrically connected with the reader 5, and further analyzes, processes, monitors and manages the data and the signals read by the reader, thereby forming a single passive wireless radio frequency identification tag (RFID) and single closed circuit structure, and achieving the effect of returning the RFID (wireless radio frequency tag) signal by a signal module (wireless Radio Frequency Identification (RFID) tag module).
Referring to fig. 3 and 6 again, a second embodiment of the present invention is shown, and the structure of the second embodiment is substantially the same as that of the first embodiment, and the differences are as follows, and the same elements are denoted by the same element numbers.
The at least one radio frequency identification tag module 4 of the present embodiment is a single Radio Frequency Identification (RFID) tag module, the single RFID tag module has a plurality of chips 41A-41E (five are illustrated but not limited thereto), a single substrate 42 and a plurality of open contacts 43A-43D (four are illustrated but not limited thereto), the substrate 42 is disposed at the predetermined position of the surface 4 (as shown in FIG. 6), one of the chips 41A-41E (e.g., chip 41A) is connected (bonded) to the substrate 42 and electrically connected to the RFID element 2, and the other chips 41B-41E are electrically connected to the RFID element 2 through the open contacts 43A-43D to form the closed circuit, and all the chips 41A-41E are disposed at equal angular intervals, the chips 41A to 41E have different RFID tag data, the connectable electrical section 31 of the pointer 3 implements the moving path between each open contact 43A to 43D and each corresponding chip 41A to 41E to form a closed circuit state (i.e. forming the aforementioned closed circuit); therefore, a single passive radio frequency identification tag (RFID) is formed, and the structure of the chips 41A-41E with different radio frequency identification tag data is triggered by opening or closing circuits at different positions to represent different states or data, so that the effect of returning RFID (radio frequency identification tag) signals by a plurality of signal modules (radio frequency identification (RFID) tag modules) is achieved, and the purpose of monitoring without energy consumption is further achieved.
Referring to fig. 4 and 7 again, a third embodiment of the present invention is shown, and the structure of the third embodiment is substantially the same as that of the first embodiment, and the differences are as follows, and the same elements are denoted by the same element numbers.
In this embodiment, at least one radio frequency identification tag module 4 is a plurality of Radio Frequency Identification (RFID) tag modules 4A-4C (three are illustrated, but not limited thereto), each RFID tag module has a single chip 41, a single substrate 42 and a single disconnection point 43, the RFID tag modules 4A-4C are disposed at equal angular intervals, the substrate 42 of each RFID tag module 4A-4C is disposed at the predetermined position of the surface 1 (as shown in FIG. 7), the chips 41 of each RFID tag module 4A-4C are connected (bonded) to the corresponding substrate 42 and electrically connected to the RFID device 2 through the corresponding disconnection point 43 to form the closed circuit, the chips 41 of each RFID tag module 4A-4C have different RFID tag data, the connectable electrical section 31 of the pointer 3 implements the moving path between the rfid tag modules 4A-4C; therefore, a plurality of passive radio frequency identification tags (RFID) are formed, the structure of the chip 41 of each radio frequency identification tag module 4A-4C with different radio frequency tag data is triggered by opening or closing circuits (namely the closed circuit) at different positions, different states or data are represented according to the open circuit return signals and the closed circuit return signals, the effect of returning the RFID (radio frequency tag) signals by a plurality of signal modules (radio frequency identification (RFID) tag modules) is achieved, and the purpose of monitoring without energy consumption is further achieved.
The following describes an embodiment of the present invention in which the structure 100 with a wireless radio frequency meter is implemented in a liquid level meter.
Please refer to fig. 8, which illustrates a fourth embodiment of the present invention; the utility model discloses an utensil wireless radio frequency meter structure 100 includes a sensing connecting rod 1 ', a wireless radio frequency component 2, a float 3' and single wireless radio frequency identification label module 4.
The sensing link 1' is provided with a marking region (not shown), the marking region can mark numerical values, such as liquid level, and can further mark a lowest liquid level value and a highest liquid level value, which are known features and will not be described herein.
The float 3 'is substantially spherical and includes two magnetic elements 31', 32 'disposed opposite to each other, such as magnets, and the float 3' is disposed outside the sensing link 1 'such that the float 3' can move up and down to form a moving path.
The radio frequency element 2 is disposed at a predetermined position in the sensing link 1', as shown in fig. 8.
A single rfid tag module 4 disposed in the sensing link 1 ' and electrically connected to the rf device 2, wherein the rfid tag module 4 has a substrate 42, a plurality of chips 41F and a plurality of open contacts 43E, the substrate 42 is disposed at the predetermined position of the sensing link 1 ', one of the chips 41F is bonded to the substrate 42 and electrically connected to the rf device 2, and the other chips 41F are electrically connected to the rf device 2 through the open contacts 43E to form a closed circuit, the chips 41F have different rf tag data, such that when the float 3 ' implements the moving path, the different chips 41F, the open contacts 43E and the two magnetic devices 31 ', 32 ' interact to generate different signals; similarly, the reader 5 (as shown in fig. 10) can read the rfid tag data of the corresponding chip 41F through the reader 5 and the management system 6 (as shown in fig. 10), and transmit the rfid tag data to the management system 6 (as shown in fig. 10) electrically connected to the reader 5, so as to analyze, process, monitor, and manage the data and signals read by the reader; therefore, a plurality of passive radio frequency identification tags (RFID) are formed, and the structure of each chip 41F with different radio frequency identification tag data is triggered by opening or closing circuits (namely the closed circuit) at different positions, different states or data are represented according to the open circuit return signal and the closed circuit return signal, so that the effect of returning the RFID (radio frequency identification tag) signal by a plurality of signal modules (radio frequency identification (RFID) tag modules) is achieved, and the aim of monitoring without energy consumption is further achieved.
The number of chips and the number of open contacts can be increased or decreased according to the precision of the numerical value to be marked.
Please refer to fig. 9, which illustrates a fifth embodiment of the present invention; the utility model discloses an utensil wireless radio frequency meter structure 100 includes a surface 1, a wireless radio frequency component 2, a pointer 3 and single wireless radio frequency identification label module 4.
The surface 1 may be as described in the first embodiment, and is not described again.
The antenna coil 2 is linearly (e.g. vertically) disposed at a predetermined position on the surface 1, and corresponds to a marked area (not shown) of the surface 1.
The pointer 3 is disposed on the surface 1 and has a moving path along a linear direction (e.g. up-down direction), and the pointer 3 has a connectable section 31 at an end of a closed loop corresponding to the wireless RF device 2 for electrically connecting with the closed loop of the wireless RF device 2.
The single radio frequency identification tag module 4 is electrically connected with the radio frequency element 2; wherein, the single rfid tag module 4 has a plurality of chips 41G, a single substrate 42 and a plurality of open contacts 43F, the substrate 42 is disposed at the predetermined position on the surface 1 (as shown in fig. 9), one of the chips 41G is bonded on the substrate 42 and electrically connected to the rf device 2, and the other chips 41G are electrically connected to the rf device 2 through the open contacts 43F to form the closed circuit, all the chips 41G are linearly disposed at intervals (e.g., vertically spaced), the chips 41G have different rf tag data, and the connectable electrical section 31 of the pointer 3 implements the moving path between each open contact 43F and the corresponding chip 41G; similarly, the reader 5 (as shown in fig. 10) can read the rfid tag data of the corresponding chip 41G through the reader 5 and the management system 6 shown in fig. 10, and transmit the rfid tag data to the management system 6 (as shown in fig. 10) electrically connected to the reader 5, so as to analyze, process, monitor and manage the data and signals read by the reader; therefore, a plurality of passive radio frequency identification tags (RFID) are formed, and the structure of each chip 41G with different radio frequency identification tag data is triggered by opening or closing circuits (namely the closed circuit) at different positions, different states or data are represented according to the open circuit return signal and the closed circuit return signal, so that the effect of returning the RFID (radio frequency identification tag) signal by a plurality of signal modules (radio frequency identification (RFID) tag modules) is achieved, and the aim of monitoring without energy consumption is further achieved.
The number of chips and the number of open contacts can be increased or decreased according to the precision of the numerical value to be marked.
Therefore, by means of the above structure, the present invention can directly observe the meter pointer of the pressure meter or the liquid level meter, and at the same time, can trigger the closed loop of the wireless radio frequency element 2 via the pointer position, and return the RFID (wireless radio frequency tag) signal by one or more signal modules; moreover, the wire and the energy consumption can be saved, and the purpose of monitoring is achieved; especially for the distributed objects needing to be controlled without power supply, the control function can be implemented, and the related signals are connected to the control system to achieve the purpose of management; in addition, the aim of auxiliary management can be achieved in the power-off state.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. Although the present invention has been explained with reference to preferred embodiments, this does not constitute a limitation of the present invention. It should be noted that many other similar embodiments can be constructed by those skilled in the art according to the inventive concept, and these are all within the scope of the invention.
Claims (7)
1. A structure of a meter with wireless radio frequency, comprising:
a surface having a marking area;
a radio frequency element connected to the inside or outside of the surface and corresponding to the mark area;
a pointer, which is arranged on the surface and has a moving path along the closed loop of the radio frequency element, and the pointer is correspondingly arranged at one end of the closed loop and can be connected with an electric section, and can be electrically connected with the radio frequency element by using the closed loop or magnetic field coupling and other modes; and
at least one radio frequency identification label module arranged at a predetermined position of the surface and electrically connected with the radio frequency element.
2. The structure of a meter with radio frequency according to claim 1, wherein: the at least one radio frequency identification tag module is a single Radio Frequency Identification (RFID) tag module, the single RFID tag module has a single chip, a single substrate and a single open circuit contact, the substrate is disposed at the predetermined position of the surface, the chip is bonded on the substrate, the chip is electrically connected with the radio frequency element and the open circuit contact to form the closed circuit, and the connectable electrical section of the pointer implements the moving path between the open circuit contact and the chip.
3. The structure of a meter with radio frequency according to claim 1, wherein: the at least one radio frequency identification tag module is a single Radio Frequency Identification (RFID) tag module, the single RFID tag module has a plurality of chips, a single substrate and a plurality of open contacts, the substrate is disposed at the predetermined position of the surface, one of the chips is bonded on the substrate and electrically connected with the RFID element, the other chips are electrically connected with the RFID element through the open contacts to form the closed circuit, all the chips are disposed at equal angular intervals, the chips have different RFID tag data, and the connectable electrical section of the pointer implements the moving path between each open contact and the corresponding chip.
4. The structure of a meter with radio frequency according to claim 1, wherein: the at least one radio frequency identification tag module is a plurality of Radio Frequency Identification (RFID) tag modules, each radio frequency identification tag module is provided with a single chip, a single substrate and a single open circuit contact, the radio frequency identification tag modules are arranged at equal angular intervals, the substrate of each radio frequency identification tag module is arranged at the preset position of the surface, the chip of each radio frequency identification tag module is connected (bonding) on the corresponding substrate and is electrically connected with the radio frequency element through the corresponding open circuit contact to form the closed circuit, the chips of each radio frequency identification tag module are respectively provided with different radio frequency tag data, and the connectable electrical section of the pointer implements the moving path between the radio frequency identification tag modules.
5. The structure of a meter with radio frequency according to claim 1, wherein: the system also comprises a reader and a management system, wherein the reader is used for wirelessly reading the signal of the at least one identification tag module, and the management system is electrically connected with the reader so as to analyze, process, monitor and manage the signal read by the reader.
6. A structure of a meter with wireless radio frequency, comprising:
the sensing connecting rod is provided with a marking area;
a float, which contains two magnetic elements oppositely arranged and is sleeved outside the sensing connecting rod so that the float can move up and down to form a moving path;
a radio frequency element disposed at a predetermined position in the sensing link; and
a single radio frequency identification label module, arranged in the sensing connecting rod and electrically connected with the radio frequency element, wherein the radio frequency identification label module is provided with a substrate, a plurality of chips and a plurality of open circuit contacts, the substrate is arranged at the preset position of the sensing connecting rod, one of the chips is connected (bonding) on the substrate and electrically connected with the radio frequency element, the other chips are respectively and electrically connected with the radio frequency element through the open circuit contacts to form a closed circuit, the chips have different radio frequency label data, so that when the floater implements the moving path, different chips, different open circuit contacts and the two magnetic elements interact to generate different signals.
7. A structure of a meter with wireless radio frequency, comprising:
a surface having a marking area;
a radio frequency element linearly arranged at a predetermined position of the surface and corresponding to the marking area;
the pointer is arranged on the surface and provided with a moving path along the linear direction, and the pointer is correspondingly arranged at one end of a closed loop of the radio frequency element and provided with a connectable electrical section which is electrically connected with the closed loop of the radio frequency element; and
a single radio frequency identification tag module electrically connected with the radio frequency element, wherein the single radio frequency identification tag module has a plurality of chips, a single substrate and a plurality of open circuit contacts, the substrate is arranged at the predetermined position of the surface, one of the chips is connected (bonding) on the substrate and electrically connected with the radio frequency element, the other chips are respectively and electrically connected with the radio frequency element through the open circuit contacts to form the closed circuit, all the chips are linearly arranged at intervals, the chips respectively have different radio frequency identification data, and the connectable electrical section of the pointer implements the moving path between each open circuit contact and the corresponding chip.
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| CN201921278864.4U CN210375509U (en) | 2019-08-08 | 2019-08-08 | Meter structure with wireless radio frequency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921278864.4U CN210375509U (en) | 2019-08-08 | 2019-08-08 | Meter structure with wireless radio frequency |
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| CN210375509U true CN210375509U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855074A (en) * | 2019-04-29 | 2020-10-30 | 张力 | Meter structure with wireless radio frequency |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855074A (en) * | 2019-04-29 | 2020-10-30 | 张力 | Meter structure with wireless radio frequency |
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Granted publication date: 20200421 Termination date: 20200808 |