WO2019221683A2 - A data acquisition system - Google Patents

A data acquisition system Download PDF

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Publication number
WO2019221683A2
WO2019221683A2 PCT/TR2018/050842 TR2018050842W WO2019221683A2 WO 2019221683 A2 WO2019221683 A2 WO 2019221683A2 TR 2018050842 W TR2018050842 W TR 2018050842W WO 2019221683 A2 WO2019221683 A2 WO 2019221683A2
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WO
WIPO (PCT)
Prior art keywords
data
acquisition system
data acquisition
external device
sensor data
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PCT/TR2018/050842
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French (fr)
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WO2019221683A3 (en
Inventor
Muvaffak Amasya
Original Assignee
Siskon Endustriyel Otomasyon Sistemleri Sanayi Ve Ticaret Anonim Sirketi
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Publication of WO2019221683A2 publication Critical patent/WO2019221683A2/en
Publication of WO2019221683A3 publication Critical patent/WO2019221683A3/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/04—Manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/30—Computing systems specially adapted for manufacturing

Definitions

  • the present invention relates to data acquisition systems comprising an input/output unit configured to provide data exchange with at least one external device having at least one sensor, and a processor unit which provides association of sensor data, received from said input/output unit, with a tag and which provides recording of said sensor data to a database.
  • the present invention relates to a data acquisition system, for eliminating the above mentioned disadvantages and for bringing new advantages to the related technical field.
  • the present invention is a data acquisition system comprising an input/output unit configured to provide data exchange with at least one external device having at least one sensor, and a processor unit which provides association of sensor data, received from said input/output unit, with a tag and which provides recording of said sensor data to a database.
  • said processor unit is configured to provide recording of only the sensor data, which remains within a predetermined value range among the sensor data received from the external device, in the database.
  • the processor unit is configured to provide recording by means of associating the data, received from external devices, with the time where the data is received.
  • the processor unit is configured to provide temporary storing of the finally received sensor data for each tag in a memory unit.
  • the processor unit is configured to send at least one of the predetermined commands to the external device in case sensor data which exceeds the predetermined threshold values is detected.
  • the devices which operate at dangerous values are prevented from being damaged.
  • said commands are at least one of the following: stopping the external device, re-starting the external device, changing the operation mode of the external device.
  • the processor unit is configured to select a function according to the type of the external device where the sensor data is received, to apply said function to at least one set sensor data and to associate the sensor data, where function is applied, with a tag and to record said sensor data in the database.
  • said input/output unit is configured to realize data exchange in a wired or wireless manner with external devices.
  • said database is provided in a server connected to a communication network and the data acquisition system comprises a communication interface configured to connect to said communication network.
  • said data acquisition system comprises pluralities of client devices configured to be connected to the communication network; the server is configured to provide transfer of the commands, entered through the client devices, to the external devices by means of the processor unit.
  • each of the client devices, the processor unit and the server is configured to communicate with each other by means of the web-socket protocol.
  • the clients provide rapid command sending or result monitoring.
  • said input/output unit is configured to provide wireless communication with the external devices and to communicate in multiple frequency bands.
  • data is received from devices which communicate at different frequencies.
  • the processor unit is configured to detect the communication protocol by means of which the data, received from the external device, is sent and to read the sensor data according to the detected protocol and to send command to the external device according to the detected protocol.
  • data is received from devices which communicate with different protocols.
  • Figure 1 is a representative view of the data acquisition system.
  • Figure 2 is a representative view of a possible embodiment of the present invention.
  • the data acquisition system comprises a data acquisition device (100) having an input/output unit (110) configured to provide data exchange with pluralities of external devices (500) where each one comprises at least one sensor (510) and a processor unit (120) which processes the sensor data received from said input/output unit (110) according to a data acquisition software (131) in a memory unit (130) and which provides storage of said sensor data in a database (140).
  • the external devices (500) can be any production machine.
  • the sensors (510) produce signal related to the processes realized by the machine (external device).
  • the external devices (500) can comprise one each control units (520).
  • the signal produced in the sensor (510) can be processed by the control unit (520) and can be sent to the data acquisition device (100) by means of a protocol.
  • the control unit (520) can also control the processes like turning on/off the external device (500) during production of the external device (500) and like selection of the opeation mode.
  • the control unit (520) can also provide realization of the production steps executed by the external device (500).
  • the processor unit (120) can be a microprocessor.
  • the memory unit (130) is a memory where data can be stored in a permanent manner.
  • the processor unit (120) can send command to the control unit (520).
  • the input/output unit (110) can be connected to external devices (500) by means of wired or wireless connection.
  • the input/output unit (110) can be arranged to send and receive data in multiple frequency bands.
  • the input/output unit (110) can comprise antenna, switching elements, amplifiers and other circuits (not illustrated in the figures) which are well-known in the art in order to send data and receive data in multiple frequency bands.
  • the database (140) is provided in a server (200).
  • Said server (200) can be connected to a communication network (300).
  • the data acquisition device (100) can comprise a communication interface (150) in order to be connected to the communication network (300).
  • Said communication network (300) can be WLAN, LAN, WAN or WWAN.
  • the communication network (300) is internet.
  • the subject matter data acquisition system can also comprise pluralities of client devices (600).
  • Said client devices (600) can be connected to the communication network (300) and can communicate with the server (200).
  • the client devices (600) can be directly connected to the data acquisition device (100).
  • the client devices (600) can be any general-purpose computer (laptop computer, desktop computer, mobile phone, tablet computer, smart watch, etc.).
  • the client devices (600) preferably communicate with the server (200) or with the data acquisition device (100) by means of the web-socket protocol.
  • the time duration consumed for making interrogation in the database (140) is minimized, and the client devices (600) can access the data in a more rapid manner or can send command to the external devices (500).
  • the processor unit (120) provides processing of data received from each external device (500) and correlation of said data with at least one tag and storing in database by means of correlating with the time where said data is received. For instance, the instantaneous temperature of an external device like furnace can be stored by associating with a“furnacel” tag.
  • the memory unit (130) comprises a data acquisition software (131) comprising functional modules which accommodate the processes applied for operation of the subject matter system and formed by command lines executed by the processor unit (120).
  • the data acquisition software (131) comprises a verification module (132), a formula module (133), a real-time module (134), a data processing module (135), a notification module (136) and a driver module (137).
  • the data acquisition software (131) has a layered architecture.
  • the driver module (137) provides detection of the communication protocol where the sensor data, received from external devices (500), is sent and provides communication in communication protocols detected by means of external devices (500) where data is received.
  • the driver module (137) can comprise pluralities of libraries where the communication protocols are stored.
  • the verification module (132) provides transforming of the sensor data, received from external devices (500), into a desired unit and thus, provides obtaining a value and interrogates whether the obtained value is within a predetermined value range. The values are ignored if they are outside the value range and the tag is updated by means of accepting the final value of the related tag as a value received at the time when the ignored value is received. For instance, the temperature of a furnace at time t-1 is recorded as 2000°C and the value range for this tag is accepted as -10°C-10000°C. When a sensor data of value of 1000000°C is read as a result of a noise or failure, this data is ignored and the tag value at time t is updated as 2000°C.
  • the formula module (133) provides application of predetermined functions to the sensor data. For instance, more than one sensor data can be processed and can be associated with an additional tag. The formula module (133) permits function formation or tag formation by the client units (600).
  • the real-time module (134) provides temporary storage of the final values of the tags.
  • the data processing module (135) provides storage of the data, passing through the verification module (132) and processed in the formula module (133), in the database.
  • the notification module (136) sends notification to the client devices (600) or to the external devices (500) when sensor data is detected which exceeds predetermined threshold values and whose sequential values have predetermined patterns or when sensor data is detected which exceeds determined threshold values for a predetermined duration.
  • the external devices (600) also can create audible or visual warning.
  • the exemplary operation scenario of the abovementioned system is as follows: the external devices (500) send sensor data to the data acquisition device (100) at determined periods.
  • the driver module (137) provides detection of the communication protocol of each external device (500) and provides continuation of communication with the related communication devices (500) with the detected protocols.
  • the verification module (132) provides ignoring of sensor data which are outside the predetermined value range.
  • the function module (133) applies at least one function to the sensor data according to the external device identity number where data is received.
  • the real-time module (134) provides temporary storage of the sensor data, passing through the verification module (132), in the memory unit (130) or in the database (140). The data of the related tags are updated with the recently received data.
  • the data processing module (135) provides correlation and recording of the data, received from the function module (133), with the time when the data is received in the database and with the related tag.
  • the notification module (136) provides notification to be sent to the client devices (600) or to the external devices (500) when sensor data is detected which exceeds the predetermined threshold values and whose sequential values have predetermined patterns or which exceeds determined threshold values for a predetermined duration.
  • the notification module (136) also sends command to the external devices (500) when the predetermined conditions occur.
  • the client device (600) the instantaneous data or permanently stored data can be accessed.

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Abstract

The present invention is a data acquisition system comprising an input/output unit (110) configured to provide data exchange with at least one external device (500) having at least one sensor (510), and a processor unit (120) which provides association of sensor data received from said input/output unit (110), with a tag and which provides recording of said sensor data to a database (140). Said processor unit (120) is configured to provide recording of only the sensor data which remains within a predetermined value range among the sensor data received from the external device (500), in the database (140)

Description

A DATA ACQUISITION SYSTEM
TECHNICAL FIELD
The present invention relates to data acquisition systems comprising an input/output unit configured to provide data exchange with at least one external device having at least one sensor, and a processor unit which provides association of sensor data, received from said input/output unit, with a tag and which provides recording of said sensor data to a database.
PRIOR ART
With the development of Industry 4.0, production data can be easily accessed based on the data received from production machines and instantaneous access to these data provides detection of failures or problems. Since the data are stored, the data can be analysed in a detailed manner.
In plants and factories, external devices like production machines, assembly machines, etc. are used which can communicate with different protocols and which have been developed by means of different technologies. A system is needed which provides acquisition of data from the devices which communicate by means of such different protocols. The data received from external devices may change due to various noise sources and even if there is no failure in the external device, values can be read which have very high amplitude when compared with the values which are to be obtained under normal conditions.
As a result, because of all of the abovementioned problems, an improvement is required in the related technical field.
BRIEF DESCRIPTION OF THE INVENTION
The present invention relates to a data acquisition system, for eliminating the above mentioned disadvantages and for bringing new advantages to the related technical field.
An object of the present invention is to provide a data acquisition system where the effect of inconsistent values, which occur due to erroneous measurements realized as a result of various reasons, on the recorded data is reduced. Another object of the present invention is to provide a data acquisition system which provides data acquisition from devices which communicate with different protocols.
In order to realize all of the abovementioned objects and the objects which are to be deducted from the detailed description below, the present invention is a data acquisition system comprising an input/output unit configured to provide data exchange with at least one external device having at least one sensor, and a processor unit which provides association of sensor data, received from said input/output unit, with a tag and which provides recording of said sensor data to a database. Accordingly, the improvement of the present invention is that said processor unit is configured to provide recording of only the sensor data, which remains within a predetermined value range among the sensor data received from the external device, in the database. Thus, the excessive values, which occur due to noise occurring in signal transfer or erroneous measurement occurring due to various reasons, are prevented from being recorded in the database.
In a preferred embodiment of the present invention, the processor unit is configured to provide recording by means of associating the data, received from external devices, with the time where the data is received.
In another preferred embodiment of the present invention, the processor unit is configured to provide temporary storing of the finally received sensor data for each tag in a memory unit.
In another preferred embodiment of the present invention, the processor unit is configured to send at least one of the predetermined commands to the external device in case sensor data which exceeds the predetermined threshold values is detected. Thus, the devices which operate at dangerous values are prevented from being damaged.
In another preferred embodiment of the present invention, said commands are at least one of the following: stopping the external device, re-starting the external device, changing the operation mode of the external device.
In another preferred embodiment of the present invention, the processor unit is configured to select a function according to the type of the external device where the sensor data is received, to apply said function to at least one set sensor data and to associate the sensor data, where function is applied, with a tag and to record said sensor data in the database. In another preferred embodiment of the present invention, said input/output unit is configured to realize data exchange in a wired or wireless manner with external devices.
In another preferred embodiment of the present invention, said database is provided in a server connected to a communication network and the data acquisition system comprises a communication interface configured to connect to said communication network.
In another preferred embodiment of the present invention, said data acquisition system comprises pluralities of client devices configured to be connected to the communication network; the server is configured to provide transfer of the commands, entered through the client devices, to the external devices by means of the processor unit.
In another preferred embodiment of the present invention, each of the client devices, the processor unit and the server is configured to communicate with each other by means of the web-socket protocol. Thus, the clients provide rapid command sending or result monitoring.
In another preferred embodiment of the present invention, said input/output unit is configured to provide wireless communication with the external devices and to communicate in multiple frequency bands. Thus, data is received from devices which communicate at different frequencies.
In another preferred embodiment of the present invention, the processor unit is configured to detect the communication protocol by means of which the data, received from the external device, is sent and to read the sensor data according to the detected protocol and to send command to the external device according to the detected protocol. Thus, data is received from devices which communicate with different protocols.
BRIEF DESCRIPTION OF THE FIGURES
Figure 1 is a representative view of the data acquisition system.
Figure 2 is a representative view of a possible embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
In this detailed description, the subject matter is explained with references to examples without forming any restrictive effect only in order to make the subject more understandable. With reference to Figure 1 , the data acquisition system comprises a data acquisition device (100) having an input/output unit (110) configured to provide data exchange with pluralities of external devices (500) where each one comprises at least one sensor (510) and a processor unit (120) which processes the sensor data received from said input/output unit (110) according to a data acquisition software (131) in a memory unit (130) and which provides storage of said sensor data in a database (140).
The external devices (500) can be any production machine. The sensors (510) produce signal related to the processes realized by the machine (external device). The external devices (500) can comprise one each control units (520). The signal produced in the sensor (510) can be processed by the control unit (520) and can be sent to the data acquisition device (100) by means of a protocol. The control unit (520) can also control the processes like turning on/off the external device (500) during production of the external device (500) and like selection of the opeation mode. The control unit (520) can also provide realization of the production steps executed by the external device (500).
The processor unit (120) can be a microprocessor. The memory unit (130) is a memory where data can be stored in a permanent manner. The processor unit (120) can send command to the control unit (520).
The input/output unit (110) can be connected to external devices (500) by means of wired or wireless connection. The input/output unit (110) can be arranged to send and receive data in multiple frequency bands. The input/output unit (110) can comprise antenna, switching elements, amplifiers and other circuits (not illustrated in the figures) which are well-known in the art in order to send data and receive data in multiple frequency bands.
In a possible embodiment of the invention as in Figure 2, the database (140) is provided in a server (200). Said server (200) can be connected to a communication network (300). The data acquisition device (100) can comprise a communication interface (150) in order to be connected to the communication network (300). Said communication network (300) can be WLAN, LAN, WAN or WWAN. In this possible embodiment, the communication network (300) is internet.
The subject matter data acquisition system can also comprise pluralities of client devices (600). Said client devices (600) can be connected to the communication network (300) and can communicate with the server (200). In a possible embodiment, the client devices (600) can be directly connected to the data acquisition device (100). The client devices (600) can be any general-purpose computer (laptop computer, desktop computer, mobile phone, tablet computer, smart watch, etc.). The client devices (600) preferably communicate with the server (200) or with the data acquisition device (100) by means of the web-socket protocol. Thus, the time duration consumed for making interrogation in the database (140) is minimized, and the client devices (600) can access the data in a more rapid manner or can send command to the external devices (500).
The processor unit (120) provides processing of data received from each external device (500) and correlation of said data with at least one tag and storing in database by means of correlating with the time where said data is received. For instance, the instantaneous temperature of an external device like furnace can be stored by associating with a“furnacel” tag.
The memory unit (130) comprises a data acquisition software (131) comprising functional modules which accommodate the processes applied for operation of the subject matter system and formed by command lines executed by the processor unit (120).
The data acquisition software (131) comprises a verification module (132), a formula module (133), a real-time module (134), a data processing module (135), a notification module (136) and a driver module (137). The data acquisition software (131) has a layered architecture.
The driver module (137) provides detection of the communication protocol where the sensor data, received from external devices (500), is sent and provides communication in communication protocols detected by means of external devices (500) where data is received. The driver module (137) can comprise pluralities of libraries where the communication protocols are stored.
The verification module (132) provides transforming of the sensor data, received from external devices (500), into a desired unit and thus, provides obtaining a value and interrogates whether the obtained value is within a predetermined value range. The values are ignored if they are outside the value range and the tag is updated by means of accepting the final value of the related tag as a value received at the time when the ignored value is received. For instance, the temperature of a furnace at time t-1 is recorded as 2000°C and the value range for this tag is accepted as -10°C-10000°C. When a sensor data of value of 1000000°C is read as a result of a noise or failure, this data is ignored and the tag value at time t is updated as 2000°C. The formula module (133) provides application of predetermined functions to the sensor data. For instance, more than one sensor data can be processed and can be associated with an additional tag. The formula module (133) permits function formation or tag formation by the client units (600).
The real-time module (134) provides temporary storage of the final values of the tags.
The data processing module (135) provides storage of the data, passing through the verification module (132) and processed in the formula module (133), in the database.
The notification module (136) sends notification to the client devices (600) or to the external devices (500) when sensor data is detected which exceeds predetermined threshold values and whose sequential values have predetermined patterns or when sensor data is detected which exceeds determined threshold values for a predetermined duration. The external devices (600) also can create audible or visual warning.
The exemplary operation scenario of the abovementioned system is as follows: the external devices (500) send sensor data to the data acquisition device (100) at determined periods. The driver module (137) provides detection of the communication protocol of each external device (500) and provides continuation of communication with the related communication devices (500) with the detected protocols. The verification module (132) provides ignoring of sensor data which are outside the predetermined value range. The function module (133) applies at least one function to the sensor data according to the external device identity number where data is received. The real-time module (134) provides temporary storage of the sensor data, passing through the verification module (132), in the memory unit (130) or in the database (140). The data of the related tags are updated with the recently received data. The data processing module (135) provides correlation and recording of the data, received from the function module (133), with the time when the data is received in the database and with the related tag. The notification module (136) provides notification to be sent to the client devices (600) or to the external devices (500) when sensor data is detected which exceeds the predetermined threshold values and whose sequential values have predetermined patterns or which exceeds determined threshold values for a predetermined duration. The notification module (136) also sends command to the external devices (500) when the predetermined conditions occur. By means of the client device (600), the instantaneous data or permanently stored data can be accessed. The protection scope of the present invention is set forth in the annexed claims and cannot be restricted to the illustrative disclosures given above, under the detailed description. It is because a person skilled in the relevant art can obviously produce similar embodiments under the light of the foregoing disclosures, without departing from the main principles of the present invention.
REFERENCE NUMBERS
100 Data acquisition device
110 Input/output unit
120 Processor unit
130 Memory unit
131 Data acquisition software
132 Verification module
133 Formula module 134 Real-time module
135 Data processing module
136 Notification module
137 Driver module
140 Database
150 Network interface
200 Server
300 Communication network
500 External device
510 Sensor
520 Control unit
600 Client device

Claims

1. A data acquisition system comprising an input/output unit (110) configured to provide data exchange with at least one external device (500) having at least one sensor (510), and a processor unit (120) which provides association of sensor data, received from said input/output unit (110), with a tag and which provides recording of said sensor data to a database (140), characterized in that said processor unit (120) is configured to provide recording of only the sensor data, which remains within a predetermined value range among the sensor data received from the external device (500), in the database (140).
2. The data acquisition system according to claim 1 , wherein the processor unit (120) is configured to provide recording by means of associating the data, received from external devices (500), with the time where the data is received.
3. The data acquisition system according to claim 1 , wherein the processor unit (120) is configured to provide temporary storing of the finally received sensor data for each tag in a memory unit (130).
4. The data acquisition system according to claim 1 , wherein the processor unit (120) is configured to send at least one of the predetermined commands to the external device (500) in case sensor data which exceeds the predetermined threshold values is detected.
5. The data acquisition system according to claim 4, wherein said commands are at least one of the following: stopping the external device (500), re-starting the external device (500), changing the operation mode of the external device (500).
6. The data acquisition system according to claim 1 , wherein the processor unit (120) is configured to select a function according to the type of the external device (500) where the sensor data is received, to apply said function to at least one set sensor data and to associate the sensor data, where function is applied, with a tag and to record said sensor data in the database (140).
7. The data acquisition system according to claim 1 , wherein said input/output unit (110) is configured to realize data exchange in a wired or wireless manner with external devices (500).
8. The data acquisition system according to claim 1 , wherein said database (140) is provided in a server (200) connected to a communication network (300) and the data acquisition system comprises a communication interface (150) configured to connect to said communication network (300).
9. The data acquisition system according to claim 1 , wherein said data acquisition system comprises pluralities of client devices (600) configured to be connected to the communication network (300); the server (200) is configured to provide transfer of the commands, entered through the client devices (600), to the external devices (500) by means of the processor unit (120).
10. The data acquisition system according to claim 9, wherein each of the client devices (600), the processor unit (102) and the server (200) is configured to communicate with each other by means of the web-socket protocol.
11. The data acquisition system according to claim 1 , wherein said input/output unit (110) is configured to provide wireless communication with the external devices (500) and to communicate in multiple frequency bands.
12. The data acquisition system according to claim 1 , wherein the processor unit (120) is configured to detect the communication protocol by means of which the data, received from the external device (500), is sent and to read the sensor data according to the detected protocol and to send command to the external device (500) according to the detected protocol.
PCT/TR2018/050842 2018-05-17 2018-12-20 A data acquisition system WO2019221683A2 (en)

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