WO2023089360A1 - Actuator with wireless communication capability - Google Patents

Actuator with wireless communication capability Download PDF

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Publication number
WO2023089360A1
WO2023089360A1 PCT/IB2021/060718 IB2021060718W WO2023089360A1 WO 2023089360 A1 WO2023089360 A1 WO 2023089360A1 IB 2021060718 W IB2021060718 W IB 2021060718W WO 2023089360 A1 WO2023089360 A1 WO 2023089360A1
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WO
WIPO (PCT)
Prior art keywords
actuator
microcontroller
power source
wireless communication
motor
Prior art date
Application number
PCT/IB2021/060718
Other languages
French (fr)
Inventor
Przemysław Adamkiewicz
Michał Styła
Original Assignee
Centrum Badawczo Rozwojowe Technologii Informatycznych Spółka Z Ograniczoną Odpowiedzialnością
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Centrum Badawczo Rozwojowe Technologii Informatycznych Spółka Z Ograniczoną Odpowiedzialnością filed Critical Centrum Badawczo Rozwojowe Technologii Informatycznych Spółka Z Ograniczoną Odpowiedzialnością
Publication of WO2023089360A1 publication Critical patent/WO2023089360A1/en

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00—Systems controlled by a computer
    • G05B15/02—Systems controlled by a computer electric
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/10—Plc systems
    • G05B2219/16—Plc to applications
    • G05B2219/163—Domotique, domestic, home control, automation, smart, intelligent house
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25011—Domotique, I-O bus, home automation, building automation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/26—Pc applications
    • G05B2219/2642—Domotique, domestic, home control, automation, smart house
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41292—H-bridge, diagonal pairs of semiconductors

Definitions

  • the subject of the invention is an actuator using the Bluetooth 5 standard for wireless control of comfort systems (in this case heat) in an intelligent building.
  • An object of the invention is an actuator having an H-bridge, its essence is that it consists of a microcontroller equipped with Bluetooth 5 wireless communication, which is connected via the H-bridge to the mounted DC motor regulating pin.
  • the antenna is connected to the microcontroller,
  • the first power source is connected to the DC motor, and the second power source is connected to the microcontroller.
  • a display can be connected to the microcontroller via a decoder.
  • the problem to be solved is the ability to control an intelligent building using specialized actuators. These actuators must have a physical structure that is susceptible to modification and the structure of the software so that they can be integrated with any system found in the building. At the same time, in conjunction with the IoT platform collecting data on the environmental parameters of the building (created by users according to individual preferences), it is to accept commands from the neural network learned on this basis.
  • the advantageous effect is that the actuator according to the invention, due to its nature, can be used in almost every type of building - residential buildings, office buildings and industrial buildings. Additionally, in combination with the neural network of the learned behavior of users, it can bring significant savings without worsening the working conditions inside the covered area. This is often due to the prevention of waste of resources due to the carelessness or inattention of users.
  • the actuator for controlling the heating system of the building in the exemplary embodiment consists of a microcontroller 4 equipped with Bluetooth 5 wireless communication - nRF52832 from Nordic Semiconductor, which supervises the operation of a DC motor 2 with an installed control pin 1 by means of the H-bridge 3 - A4988SETTR-T from Allegro Microsystems.
  • the designed actuator has a housing equipped with a microUSB socket.
  • As 9 antennas for the microcontroller system a ceramic chip antenna from Johanson Technology operating in the 2.4 GHz band was used. The antenna 9 is connected to the microcontroller 4 via an LC matching circuit.
  • Power is supplied via the first power source 7 - a stabilizer with an output voltage of 5 V - MIC5504-3.3YM5-T5 by Microchip and a second power source 8 - a stabilizer with an output voltage of 3.3 V - MIC5504-5YM5-T5 by Microchip.
  • a 6 - 7-segment HDSM-283C display by Broadcom Avago has been added, working with the BCD 5 decoder for a 7-segment display code - SN74LS247D by Texas Instruments.
  • an analog-to-digital converter was used, which continuously measures the current flowing through the DC motor 2. This is done using a dedicated measuring resistor located inside the H-bridge 3. When reaching by the DC motor with 2 extreme positions, current spikes are recorded and interpreted. Thanks to this procedure, the DC motor 2 is calibrated each time it is cut off from the power supply in order to work only in the mechanical range of the control spindle 1. Additionally, the BCD decoder 5 for the 7-segment indicator code and one 7-segment display cell 6 are connected to the microcontroller. The reason was to increase the possibility of observing the actuator setting.
  • the built-in battery or, alternatively, the microUSB port can be used as a power source. Due to the diversity of electrical energy receiving elements, the voltage is corrected by two stabilizers: the first power source 7 with an output voltage of 5 V, used to power the DC motor 2, and the second power source 8, with a voltage of 3.3 V, to power the logic circuits. The use of stabilizers also guarantees additional filtering of the supply voltage, which is a critical condition for the correct operation of the radio layer of the microcontroller 4.
  • the actuator communicates with the rest of the devices via a chip ceramic antenna 9.
  • the operation of the actuator is based on the fact that for communication with other devices the actuator uses three Bluetooth 5 channels for broadcasting small portions of data and for searching and recognizing devices. These are channels number 37 at 2402 MHz, number 38 at 2426 MHz and number 39 at 2480 MHz.
  • the modulation used for transmission is GFSK, which is modulation with phase key and Gaussian approximation.
  • the device can transmit with a maximum power of 2.51 mW, which is equivalent to +4 dBm. Under ideal EM wave propagation conditions (in large open spaces), this power is sufficient to cover a circle with a radius of 30 meters. In practice, however, such coverage is not required due to the presence of access gates related to a given pool of smart devices assigned to a specific room.
  • Data broadcast by access gateways using non-pairing transmission has an identifier indicating the nature of the device and a set of values with specific items that may be of interest to individual devices.
  • the actuator continuously scans the environment for packages intended for it. After the parser confirms compliance with the pattern, the new setting is interpreted and entered or rejected if it is outside the available adjustment range.
  • the method of managing an intelligent building using actuators consists in that the server service supported by artificial intelligence, on the basis of the results obtained from the sensors, sends the setting of the actuator in question via the Apache Kafka data bus.
  • the signal is then received by a driver consisting of a Bluetooth 5 module and a Raspberry Pi single board computer. Both modules are directly connected to each other via a serial port.
  • the data received by the computer is communicated to the Bluetooth module 5 and then communicated to the relevant actuator via a unique radio message.
  • the wireless microcontroller 4 cooperates with a system of algorithms based on neural networks in such a way as to make its operation independent with each received information (from sensors) in terms of the selection of optimal settings. This applies to both user preferences and media saving.
  • the Bluetooth 5 protocol used in the device is configured to maximize the possibilities of combining the technology presented with solutions found in the building.

Abstract

The subject of the invention is an actuator having an H-bridge. It is characterized by the fact that it consists of a microcontroller (4) equipped with Bluetooth 5 wireless communication, which is connected via the H-bridge (3) with an installed adjustment pin (1) of a DC motor (2). The antenna (9) is connected to the microcontroller (4). The first power source (7) is connected to the DC motor (2). The second power source (8) is connected to the microcontroller (4). Optionally, a display (6) can be connected to the microcontroller (4) via a decoder (5).

Description

Actuator
The subject of the invention is an actuator using the Bluetooth 5 standard for wireless control of comfort systems (in this case heat) in an intelligent building.
Along with the development of building automation, the demand for actuators capable of regulating building parameters such as ventilation, temperature or light without human intervention is constantly growing. Currently, there are many solutions on the market that guarantee wireless control of selected subsystems, but without any specific features indicating learning and spontaneous adaptation to the user's habits. In addition, the vast majority of devices are focused on cooperation with one specific communication protocol, which is additionally "hermetic" and allows for a strictly defined expansion path.
An object of the invention is an actuator having an H-bridge, its essence is that it consists of a microcontroller equipped with Bluetooth 5 wireless communication, which is connected via the H-bridge to the mounted DC motor regulating pin. The antenna is connected to the microcontroller, The first power source is connected to the DC motor, and the second power source is connected to the microcontroller.
Optionally, a display can be connected to the microcontroller via a decoder.
The problem to be solved is the ability to control an intelligent building using specialized actuators. These actuators must have a physical structure that is susceptible to modification and the structure of the software so that they can be integrated with any system found in the building. At the same time, in conjunction with the IoT platform collecting data on the environmental parameters of the building (created by users according to individual preferences), it is to accept commands from the neural network learned on this basis.
The advantageous effect is that the actuator according to the invention, due to its nature, can be used in almost every type of building - residential buildings, office buildings and industrial buildings. Additionally, in combination with the neural network of the learned behavior of users, it can bring significant savings without worsening the working conditions inside the covered area. This is often due to the prevention of waste of resources due to the carelessness or inattention of users.
The subject of the invention has been shown in an exemplary embodiment in a schematic drawing.
Fig.1
exemplary embodiment in a schematic drawing
Examples
The actuator for controlling the heating system of the building in the exemplary embodiment consists of a microcontroller 4 equipped with Bluetooth 5 wireless communication - nRF52832 from Nordic Semiconductor, which supervises the operation of a DC motor 2 with an installed control pin 1 by means of the H-bridge 3 - A4988SETTR-T from Allegro Microsystems. The designed actuator has a housing equipped with a microUSB socket. As 9 antennas for the microcontroller system, a ceramic chip antenna from Johanson Technology operating in the 2.4 GHz band was used. The antenna 9 is connected to the microcontroller 4 via an LC matching circuit. Power is supplied via the first power source 7 - a stabilizer with an output voltage of 5 V - MIC5504-3.3YM5-T5 by Microchip and a second power source 8 - a stabilizer with an output voltage of 3.3 V - MIC5504-5YM5-T5 by Microchip. For better visualization of the actuator setting, a 6 - 7-segment HDSM-283C display by Broadcom Avago has been added, working with the BCD 5 decoder for a 7-segment display code - SN74LS247D by Texas Instruments.
In order to increase the level of safety and prevent distortions as to the position of the control spindle 1, an analog-to-digital converter was used, which continuously measures the current flowing through the DC motor 2. This is done using a dedicated measuring resistor located inside the H-bridge 3. When reaching by the DC motor with 2 extreme positions, current spikes are recorded and interpreted. Thanks to this procedure, the DC motor 2 is calibrated each time it is cut off from the power supply in order to work only in the mechanical range of the control spindle 1. Additionally, the BCD decoder 5 for the 7-segment indicator code and one 7-segment display cell 6 are connected to the microcontroller. The reason was to increase the possibility of observing the actuator setting.
It simulates the traditional numerical markings found on manual heads. The built-in battery or, alternatively, the microUSB port can be used as a power source. Due to the diversity of electrical energy receiving elements, the voltage is corrected by two stabilizers: the first power source 7 with an output voltage of 5 V, used to power the DC motor 2, and the second power source 8, with a voltage of 3.3 V, to power the logic circuits. The use of stabilizers also guarantees additional filtering of the supply voltage, which is a critical condition for the correct operation of the radio layer of the microcontroller 4. The actuator communicates with the rest of the devices via a chip ceramic antenna 9.
The operation of the actuator is based on the fact that for communication with other devices the actuator uses three Bluetooth 5 channels for broadcasting small portions of data and for searching and recognizing devices. These are channels number 37 at 2402 MHz, number 38 at 2426 MHz and number 39 at 2480 MHz. The modulation used for transmission is GFSK, which is modulation with phase key and Gaussian approximation. Depending on the demand, the device can transmit with a maximum power of 2.51 mW, which is equivalent to +4 dBm. Under ideal EM wave propagation conditions (in large open spaces), this power is sufficient to cover a circle with a radius of 30 meters. In practice, however, such coverage is not required due to the presence of access gates related to a given pool of smart devices assigned to a specific room. Data broadcast by access gateways using non-pairing transmission has an identifier indicating the nature of the device and a set of values with specific items that may be of interest to individual devices. The actuator continuously scans the environment for packages intended for it. After the parser confirms compliance with the pattern, the new setting is interpreted and entered or rejected if it is outside the available adjustment range.
The method of managing an intelligent building using actuators according to the invention consists in that the server service supported by artificial intelligence, on the basis of the results obtained from the sensors, sends the setting of the actuator in question via the Apache Kafka data bus. The signal is then received by a driver consisting of a Bluetooth 5 module and a Raspberry Pi single board computer. Both modules are directly connected to each other via a serial port. The data received by the computer is communicated to the Bluetooth module 5 and then communicated to the relevant actuator via a unique radio message. The wireless microcontroller 4 cooperates with a system of algorithms based on neural networks in such a way as to make its operation independent with each received information (from sensors) in terms of the selection of optimal settings. This applies to both user preferences and media saving. The Bluetooth 5 protocol used in the device is configured to maximize the possibilities of combining the technology presented with solutions found in the building.
List of markings:
1 – regulating spindle
2 – DC motor
3 – H-bridge
4 – Bluetooth 5 wireless microcontroller
5 – BCD decoder
6 – display
7 – first power source
8 – second power source
9 – antenna

Claims (2)

  1. An actuator having an H-bridge, characterized in that it consists of a microcontroller (4) equipped with Bluetooth 5 wireless communication, which is connected via the H-bridge (3) to the mounted adjusting pin (1) of the DC motor (2), The antenna (9) is connected to the microcontroller (4), the first power source (7) is connected to the DC motor (2), and the second power source (8) is connected to the microcontroller (4).
  2. Actuator according to the app. 1, characterized in that it is connected to the microcontroller (4) via a decoder (5) to the display (6).
PCT/IB2021/060718 2021-11-18 2021-11-18 Actuator with wireless communication capability WO2023089360A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL439555A PL241717B1 (en) 2021-11-18 2021-11-18 Actuator
PLWIPOST10/CPL439555 2021-11-18

Publications (1)

Publication Number Publication Date
WO2023089360A1 true WO2023089360A1 (en) 2023-05-25

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PL (1) PL241717B1 (en)
WO (1) WO2023089360A1 (en)

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "In-Depth: Control DC Motors with L293D Motor Driver IC & Arduino", 18 November 2019 (2019-11-18), pages 1 - 10, XP055938966, Retrieved from the Internet <URL:https://web.archive.org/web/20191118205015/https://lastminuteengineers.com/l293d-dc-motor-arduino-tutorial/> [retrieved on 20220706] *
SANTOSH MOHAN RAJKUMAR ET AL: "Development of Embedded Speed Control System for DC Servo Motor using Wireless Communication", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 1 December 2019 (2019-12-01), XP081542967 *
SYED ZAIN NASIR: "LCD Interfacing with Microcontrollers - The Engineering Projects", 28 May 2017 (2017-05-28), pages 1 - 11, XP055938801, Retrieved from the Internet <URL:https://www.theengineeringprojects.com/2017/05/lcd-interfacing-with-microcontrollers.html> [retrieved on 20220705] *
VINNAKOTA MANOJA ET AL: "Single MCU, 18-V/600-W BLDC Motor Control Reference Design With Bluetooth Low Energy 5.0", 17 June 2021 (2021-06-17), http://web.archive.org/web/20210617212756/https://www.ti.com/tool/TIDA-01516, pages 1 - 43, XP055938681, Retrieved from the Internet <URL:https://www.ti.com/lit/ug/tidudk8/tidudk8.pdf?ts=1657020806562&ref_url=https%3A%2F%2Fwww.ti.com%2Ftool%2FTIDA-01516> [retrieved on 20220705] *

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PL241717B1 (en) 2022-11-28

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