WO2022127978A1 - System for controlling and diagnosing electronic components - Google Patents
System for controlling and diagnosing electronic components Download PDFInfo
- Publication number
- WO2022127978A1 WO2022127978A1 PCT/DE2021/100942 DE2021100942W WO2022127978A1 WO 2022127978 A1 WO2022127978 A1 WO 2022127978A1 DE 2021100942 W DE2021100942 W DE 2021100942W WO 2022127978 A1 WO2022127978 A1 WO 2022127978A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- control
- electronic components
- diagnostic
- data
- shift register
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000003745 diagnosis Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/12—Controlling the intensity of the light using optical feedback
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/18—Controlling the intensity of the light using temperature feedback
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
Definitions
- the invention relates to a system for controlling and diagnosing a plurality of electronic components, a method for operating a system for controlling and diagnosing a plurality of electronic components, and a light-emitting diode arrangement.
- the system according to the invention for controlling and diagnosing a plurality of electronic components comprises a. a control unit which is designed and set up to receive control data and to control electronic components using the control data, b. a diagnostic unit which is designed and set up to record and output diagnostic data from electronic components, c. a communication connection which connects the control unit and the diagnostic unit to one another, comprising a shift register which is designed and set up to receive diagnostic data from at least one electronic component output by the diagnostic unit in one working cycle and to output control data for at least one electronic component to the control unit.
- the system according to the invention for controlling and diagnosing a plurality of electronic components is particularly suitable for controlling and diagnosing a large number of light-emitting diodes (LEDs) in LED arrangements.
- LEDs light-emitting diodes
- the system according to the invention enables simultaneous control and diagnostics. nose of a plurality of electronic components with less hardware and software effort compared to conventional systems.
- a number of connecting lines between control and diagnostic electronics and individual LEDs of the LED arrangement can be reduced.
- the system according to the invention preferably includes a pulse width modulation generator which is designed and set up to set a pulse duty factor for driving the electronic components as a function of the control data from the shift register. This enables digital regulation of voltages applied to the electronic components using commands specified via the communication link.
- the drive unit is preferably designed and set up to control a current flow through the electronic components and/or a voltage at the electronic components as a function of diagnostic information.
- a voltage applied to the electronic components and/or a current flowing through the electronic components can be adapted to diagnostic information, such as a component temperature, and the operational reliability and/or longevity of the electronic components can be increased.
- the system according to the invention preferably includes a fallback level with control commands for electronic components, which is activated if no control data is transmitted to the control unit within a predetermined period of time.
- the system according to the invention particularly preferably includes a second control loop, which connects the diagnostic unit directly to the control unit.
- “immediately” means that direct communication independent of the shift register and external connections and signals is possible between the diagnostic unit and the control unit. This ensures operational safety of the components, for example against overheating, if the electronic components continue to be operated in the event of a fault.
- the light-emitting diode arrangement according to the invention comprises a. a system according to the invention for controlling and diagnosing a plurality of electronic components and b. a multiplicity of light-emitting diodes which are connected to the shift register, the shift register receiving diagnostic data from at least one light-emitting diode in one operating cycle and outputting control data for driving at least one light-emitting diode.
- the method according to the invention for operating a system for controlling and diagnosing a plurality of electronic components comprises the steps:
- S1 recording diagnostic data of at least one electronic component in a shift register
- FIG. 1 shows an exemplary embodiment of a light-emitting diode arrangement according to the invention, comprising a system according to the invention for controlling and diagnosing a plurality of electronic components and
- FIG. 2 shows an exemplary embodiment of a method according to the invention for operating the system shown in FIG.
- the light-emitting diode arrangement shown in FIG. 1 comprises a multiplicity of electronic components 2 arranged in a matrix and designed as light-emitting diodes (LEDs) and a system 1 for their activation and diagnosis.
- the system 1 includes a control unit 3 which is designed and set up to receive control data and to control the LEDs 2 using the control data.
- the control data are electrical signals received via a communication link 5 .
- control unit 3 includes a pulse width modulation generator 7, which is designed and set up to set a pulse duty factor as a function of the control data. This enables digital control of the voltages applied to the LEDs 2 using the control data.
- the drive unit 3 includes a constant current source 10 which is designed and set up to set a current intensity of a current flowing through the LEDs 2 on the basis of the drive data.
- the system 1 includes a diagnostic unit 4, which is designed and set up to record diagnostic data from LEDs 2 and to output them as digital signals.
- the diagnostic data include electrical currents flowing through the LEDs 2 , electrical voltage present at the LEDs 2 , LED temperatures and an optically determined intensity of a light emitted by the LEDs 2 .
- a communication connection 5 included in the system 1 connects the control unit 3 and the diagnostic unit 4 in series via a shift register 6, which includes a plurality of bistable flip-flops.
- a control command specified via the communication link 5 is shifted in a first operating cycle into a first bistable flip-flop of the shift register 6 and stored by the latter.
- further control commands are pushed into the first bistable multivibrator via the communication link 5 and stored. Each time new control commands are pushed in, control commands that have already been stored are shifted further into a next bistable flip-flop of the shift register 6 .
- each bistable multivibrator includes an output connected to an LED 2, via which the control command stored in the respective bistable multivibrator can be read out. In this case, the read-out takes place using a read-out command.
- each flip-flop of the shift register 6 has an input for receiving diagnostic data. In the embodiment each input connected to a respective LED 2 of the LED array.
- the shift register 6 is designed and set up to receive diagnostic data from at least one LED 2 output by the diagnostic unit 4 in one working cycle and to output control data for at least one LED 2 to the control unit 3 .
- the control unit 3 is designed and set up to control the current flow through the LEDs 2 and the voltage at the LEDs 2 as a function of diagnostic information. For example, in the event of an increased LED temperature detected by the diagnostic unit 4, a current flowing through the LEDs 2 can be reduced in order to protect the LEDs 2 and surrounding components. In order not to lose this protection even in the event of a fault in the communication link 5, the system 1 includes a second control circuit 9, which connects the diagnostic unit 4 directly to the control unit 3, and a fallback level 8 with control commands for the LEDs 2. In the exemplary embodiment, the control unit controls 3 the LEDs 2 with the control commands from the fallback level 8 on if no control data are transmitted to the control unit 3 within a predetermined period of time. This enables continued operation of the LED arrangement even if there is a fault in the communication link 5.
- the system 1 comprised by the LED arrangement shown in FIG. 1 for controlling and diagnosing the LEDs 2 is operated using the method shown in FIG.
- the shift register s receives diagnostic data from at least one LED 2 detected by the diagnostic unit 4 .
- the shift register 6 outputs control data for driving at least one LED 2 to the control unit 3 . Steps S1 and S2 are carried out in one working cycle of shift register 6.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112021006463.0T DE112021006463A5 (en) | 2020-12-16 | 2021-11-29 | System for controlling and diagnosing electronic components |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020007685.8A DE102020007685A1 (en) | 2020-12-16 | 2020-12-16 | System for the control and diagnosis of electronic components |
DE102020007685.8 | 2020-12-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022127978A1 true WO2022127978A1 (en) | 2022-06-23 |
Family
ID=74239972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2021/100942 WO2022127978A1 (en) | 2020-12-16 | 2021-11-29 | System for controlling and diagnosing electronic components |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102020007685A1 (en) |
WO (1) | WO2022127978A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201191496Y (en) | 2007-12-14 | 2009-02-04 | 康佳集团股份有限公司 | LED constant current driving chip having fault retransmission function |
US20170070133A1 (en) * | 2015-09-03 | 2017-03-09 | Industrial Technology Research Institute | Driving power generating circuit and a method for generating a driving power |
US9918367B1 (en) * | 2016-11-18 | 2018-03-13 | Infineon Technologies Ag | Current source regulation |
-
2020
- 2020-12-16 DE DE102020007685.8A patent/DE102020007685A1/en not_active Withdrawn
-
2021
- 2021-11-29 DE DE112021006463.0T patent/DE112021006463A5/en active Pending
- 2021-11-29 WO PCT/DE2021/100942 patent/WO2022127978A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201191496Y (en) | 2007-12-14 | 2009-02-04 | 康佳集团股份有限公司 | LED constant current driving chip having fault retransmission function |
US20170070133A1 (en) * | 2015-09-03 | 2017-03-09 | Industrial Technology Research Institute | Driving power generating circuit and a method for generating a driving power |
US9918367B1 (en) * | 2016-11-18 | 2018-03-13 | Infineon Technologies Ag | Current source regulation |
Also Published As
Publication number | Publication date |
---|---|
DE112021006463A5 (en) | 2023-10-05 |
DE102020007685A1 (en) | 2021-02-18 |
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