NL2009698C2 - Electronic circuit system with hot swap protection. - Google Patents

Electronic circuit system with hot swap protection. Download PDF

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Publication number
NL2009698C2
NL2009698C2 NL2009698A NL2009698A NL2009698C2 NL 2009698 C2 NL2009698 C2 NL 2009698C2 NL 2009698 A NL2009698 A NL 2009698A NL 2009698 A NL2009698 A NL 2009698A NL 2009698 C2 NL2009698 C2 NL 2009698C2
Authority
NL
Netherlands
Prior art keywords
electronic circuit
circuit module
engagement
circuit system
module
Prior art date
Application number
NL2009698A
Other languages
Dutch (nl)
Inventor
Nicholas Philip Ray
Original Assignee
Priva Holding B V
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.)
Filing date
Publication date
Application filed by Priva Holding B V filed Critical Priva Holding B V
Priority to NL2009698A priority Critical patent/NL2009698C2/en
Application granted granted Critical
Publication of NL2009698C2 publication Critical patent/NL2009698C2/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1462—Mounting supporting structure in casing or on frame or rack for programmable logic controllers [PLC] for automation or industrial process control
    • H05K7/1482—PLC power supply; PLC accessories, e.g. for safety
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
    • G06F1/186—Securing of expansion boards in correspondence to slots provided at the computer enclosure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
    • H05K7/1414—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means with power interlock

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

Title: Electronic circuit system with hot swap protection
Field of the invention
The invention relates to an electronic circuit module for use in an electronic circuit system, to an electronic circuit system and to a method of 5 hot swapping electronic circuit module.
Background EP4237475 concerns hot swapping of electronic circuit modules. 10 In a hot swap an electronic circuit module is decoupled from a system when the system is up and running. Without precautionary measures this could lead to system errors and even to physical damage to the electronic circuit module or other components of the system.
15 EP4237475 describes a system with a removable printed circuit board (PCB). This is illustrated for a combination of two types of boards: a front board and a rear transition module (RTM). The RTM is plugged into the system shelf from the back of the shelf, and is connected to the corresponding front board through a standard connector on the front board, 20 including power connection and signal connection. Two handles, a top handle and a bottom handle, are installed on the front board. Similarly, two handles are installed on the RTM.
The handles are configured to facilitate the plugging/unplugging 25 of the boards. A first handle switch is installed at the position of the bottom handle of the front board. Similarly, a second handle switch is installed at the position of the bottom handle of the RTM. A circuit the front board recognizes whether the bottom handle is opened or closed by detecting a state of a handle switch signal connected to the handle switch. Application 2 of power to the front board is stopped when it is detected that the handles on the front board are opened. Similarly, the front board is configured to detect a state of handles of the RTM, and control whether to output a load power to the RTM according to a detection result.
5
This type of pre-warning has the risk of false alarms of hot swapping. When the lever is touched accidentally, without proceeding to remove the PCB, system operation may be needlessly interrupted.
10 Summary
Among others, it is an object to reduce the risk of false alarms of hot swapping.
According to one aspect an electronic circuit system is provided, 15 the electronic circuit system comprising - an electronic circuit module, which may be the entire electronic circuit system for the purpose of claiming the invention; - a first and second gripping surface at mutually opposite sides of the electronic circuit module; 20 - a first and second detector coupled to the first and second gripping surface respectively and configured to detect gripping of the first and second gripping surface respectively; - a control circuit coupled to the first and second detector and configured to generate a disengagement signal in response to detection by the first and 25 second detector that both the first and second gripping surface are simultaneously gripped.
This system makes ensures that shut down and/or power supply decoupling occurs only when the user grips the electronic circuit module between two fingers, avoiding shut down and/or power supply decoupling 30 due to accidental one sided touching. For the purposes of claiming the 3 invention, the electronic circuit system may consist of the electronic circuit module, for use in connection to an external holding part such as a backplane that is not considered as part of the system, but the as claimed the electronic circuit system also covers a system that comprises the 5 electronic circuit module and the holding part.
The electronic circuit module may comprise a functional circuit, which is configured to open a switch to an external load in response to the disengagement signal (i.e. make the switch non-conductive) and/or to perform a shut down process in response to the disengagement signal.
10 Control circuit may be configured to decouple a power supply to the functional circuit.
Preferably, the gripping surfaces are arranged so that disengagement of the electronic circuit module requires squeezing the gripping surfaces towards each other from opposite sides of the module. On 15 one hand, this makes it hard to disengage without shut down and/or power supply decoupling and on the other hand it makes accidental shut down and/or power supply decoupling unlikely.
In an embodiment, the system comprises a disengagement mechanism, for disengaging the electronic circuit module from a holding 20 part, wherein at least one of the first and second gripping surfaces is configured to operate the disengagement mechanism. Thus it is hard to operate the disengagement mechanism without shut down and/or power supply decoupling. In an exemplary embodiment, the electronic circuit module comprises an engagement hook, with a protrusion for hooking 25 behind a stop surface in a holding part, wherein at least one of the first and second gripping surfaces is configured for causing the protrusion to be removed from behind the stop surface. In an embodiment a first and second engagement hook are used, which are disengaged by the first and second gripping surfaces respectively. This makes it more difficult to disengage 30 without shut down and/or power supply decoupling.
4
In an embodiment, detector switches are used to detect displacement of the first and second gripping surface of a type that results from squeezing the first and second gripping surfaces towards each other.
In an embodiment the first and second detector and the control 5 circuit are located in the electronic circuit module. Alternatively, one or more of these components could be located in a system back plane. By including all these components in the electronic circuit module, shut down and/or power supply decoupling is independent of the system back plane.
In an embodiment the first and second gripping surface are located on the 10 electronic circuit module. Alternatively, one or more of the gripping surface could be part of the back plane. Including both in the electronic circuit module simplifies the construction. In a further embodiment the first and second gripping surface are located on the housing of the electronic circuit module.
15 In an embodiment the electronic circuit system comprises a holding part, wherein the electronic circuit module is removable from the holding part by gripping the first and second gripping surface. The holding part may be a back plane or a back plane module for example, with a back plane connector for connecting to a connector on the electronic circuit 20 module.
According to another aspect method of operating an electronic circuit system that comprises a removable electronic circuit module and a first and second gripping surface at mutually opposite sides of the electronic circuit module is provided, the method comprising 25 - detecting whether the first and second gripping surface are simultaneously held gripped; - shutting down and/or removing a power supply to a functional circuit in the electronic circuit module, in response to said detection.
30 Brief description of the drawing 5
These and other objects and advantageous aspects will become apparent from a description of exemplary embodiment.
Figure 1 shows part of an electronic circuit system Figure 2 shows an overview of the system 5 Figure 3a,b show part of an electronic circuit system
Figure 4, 5 show part a circuit diagram of the electronic circuit system
Detailed description of exemplary embodiments 10 Figure 1 shows part of an electronic circuit system, at a connection between an electronic circuit module and a backplane. By way of example, the electronic circuit module is shown to comprise housing 10, engagement hooks 12, operating grips 14a,b, detector switches 15a,b and a PCB-side connector 16. PCB-side connector 16 may be attached to a printed 15 circuit board (“PCB”-not shown) that is part of the electronic circuit module or PCB-side connector 16 may be part of that PCB. The backplane is shown to comprise stops 17 and a backplane-side connector 18. The state wherein the electronic circuit module is attached to the backplane is shown. In this state, engagement hooks 12 couple housing 10 to the backplane.
20 Engagement hooks 12 have protrusions that hook behind stops 17. In this state PCB-side connector 16 connects to a backplane-side connector 18.
The electronic circuit system may provide for combined use of a plurality of electronic circuit modules. Figure 2 shows a system overview with a plurality of electronic circuit modules 1 mounted in parallel in 25 respective backplane modules 3 attached to a rail 9. Furthermore the system may comprise a power supply sub-system 5, coupled to the electronic circuit modules 1 via the backplane modules 3, and a central controller 7 coupled to the electronic circuit modules 1 via a communication bus (not shown) through the backplane modules 3.
6
Returning to figure 1, operating grips 14a,b provide for mechanical disengagement of the electronic circuit module from the backplane. Operating grips 14a,b are in contact with engagement hooks 12, so as to bend engagement hooks 12 in order to disengage the protrusions 5 from stops 17. Disengagement is performed by squeezing the gripping surfaces of operating grips 14a,b towards each other with the fingers of one hand. The squeezing force is transmitted to engagement hooks 12, bending the engagement hooks 12 to unhook the protrusions from stops 17. As a result it becomes possible to pull the electronic circuit module from the back 10 plane. To support squeezing, the gripping surfaces face outward in mutually opposite directions.
Although figure 1 shows an embodiment wherein the gripping surfaces are parallel, it should be appreciated that they may also be arranged at an angle, for example so that the gripping surfaces can also be 15 used to exert a pulling force to pull the electronic circuit module from the back plane, as illustrated in figures 3a, b .
Detector switches 15a,b are coupled to the operating grips 14a,b to detect whether forces are exerted on the gripping surfaces to squeeze the gripping surfaces towards each other, e.g. from resulting displacement of 20 operating grips 14a,b relative to a fixed part of housing 10 (not shown) or relative to the PCB. Detector switches 15a,b may be coupled directly to the operating grips 14a,b, or indirectly, for example via engagement hooks 12.
Figure 4 shows a circuit diagram of the electronic circuit module. By way of example electronic circuit module is shown to comprise a 25 functional circuit 40, a power switch 42, and a control circuit 44. Control circuit 44 has inputs coupled to detector switches 15a,b and an output coupled to functional circuit 40. PCB-side connector 16 is symbolically shown, with only two connections, but it should be understood that PCB-side connector 16 may contain additional connections, for example for 30 ground, further power supplies and a communication bus coupled to control 7 circuit 44 and/or functional circuit 40. Functional circuit 40 has an output coupled to a control input of power switch 42. Power switch 42 may be a relay or a solid state switch. Power switch 42 has a first switch terminal coupled to PCB side connector 16 and a second switch terminal coupled to 5 an external load device (not shown). In the illustrated embodiment, the second switch terminal is coupled to the external load device via a further connector 43 on the back plane, the second switch terminal being connected to the further connector 43 via PCB side connector 16. Further connector 43 may be used to supply a load current (power supply current) to an external 10 load device. Thus, the load current originates from the back plane, but it flows to further connector 43 via the electronic circuit module. The load current may be much larger than the current used by the electronic circuit module itself. By controlling the power switch dependent on detection of gripping using detector switches 15a,b, damage to load current interruption 15 at the time of disconnecting the PCB side connector to the back plane may be prevented, without a need to keep the load current outside the electronic circuit module.
In operation, control circuit 44 generates a disengagement signal to functional circuit 40 in response to signals indicating that detector 20 switches 15a,b of the mutually opposite operating grips 14a,b both indicate that a squeezing force is exerted. In response, functional circuit 40 causes power switch 42 to switch to an open state. Although an embodiment with one power switch 42 is shown, it should be understood that more than one such switch may be included, coupled to different connectors, each switch 25 being opened by functional circuit 40 in response to the detachment signal. In other embodiments, the load circuit(s) may be connected directly to the electronic circuit module, or even be part of the electronic circuit module.
In a further embodiment, functional circuit 40 may be configured to send a signal via backplane to register in a central computer that 30 functional circuit 40 is no longer available, and/or step through a series of 8 circuit States to provide for a well defined termination end of normal operation of functional circuit 40. In an embodiment, control circuit 44 may be configured to form a logical AND of logic signals derived from detector switches 15a,b. In another embodiment detector switches 15a,b maybe 5 connected in series to form such a logical AND.
Figure 5 shows a circuit diagram of another embodiment of the electronic circuit module. By way of example the electronic circuit module is shown to comprise a functional circuit 40, a power switch 42 electrically coupled between functional circuit 40 and PCB side connector 16 and a 10 control circuit 44 with inputs coupled to detector switches 15a,b and an output coupled to a control input of power switch 42 and/or functional circuit 40.
In this embodiment, control circuit 44 is configured to cause power switch 42 to interrupt power supply current from the backplane to 15 functional circuit 40 in response to signals indicating that detector switches 15a,b of the mutually opposite operating grips 14a,b both indicate that a squeezing force is exerted. Furthermore, control circuit 44 may be configured to send a signal to functional circuit 40 to trigger execution of a shutdown operation of functional circuit 40 in response to signals indicating 20 that detector switches 15a,b of the mutually opposite operating grips 14a,b both indicate that a squeezing force is exerted. The shutdown operation may comprise sending a signal via backplane to register in a central computer that functional circuit 40 is no longer available, stepping through a series of circuit states to provide for a well defined termination end of normal 25 operation of functional circuit 40 and/or circuits in functional circuit 40 from higher current consuming states. In an embodiment the embodiments of figure 4 and 5 may be combined, the functional circuit opening the power switch and the power supply to the functional circuit being decoupled.
As will be appreciated, operating grips 14a,b need to be squeezed 30 together before it is possible to pull the electronic circuit module from the 9 backplane. Therefore, detection of the squeezing force by detector switches 15a,b makes it possible to interrupt the power supply current and/or execute shutdown operations before the electronic circuit module is pulled from the backplane. Requiring that both detector switches 15a,b indicate that a 5 squeezing force is exerted ensures that the risk of unintended shutdown is reduced when one of the operating grips 14a,b is accidentally touched.
Although the operation has been illustrated by means of an exemplary embodiment, it should be appreciated that this embodiment has been described only by way of example. Although an embodiment has been 10 shown wherein detector switches 15a,b and control circuit 44 are provided in the electronic circuit module, it should be appreciated that alternatively they may be provided in the back plane. In another embodiment, detector switches 15a,b may be provided in the electronic circuit module and the control circuit 44 may be provided in the back plane, or vice versa, an 15 electric connection between the detector switches 15a,b and control circuit 44 being provided through the connectors.
Similarly operating grips 14a,b may be part of the backplane or of the electronic circuit module, if they are only used for disengagement and not for pulling the electronic circuit module from the back plane module.
20 Operating grips 14a,b need not be in the same one of the backplane and the electronic circuit module as the detector switches 15a,b, as long as detector switches 15a,b their contact with operating grips 14a,b is affected by squeezing. In another embodiment one of operating grips 14a,b may be provided in the backplane and the other in the electronic circuit module, as 25 long as they are arranged so that they can be squeezed together. Similarly, detector switches 15a,b may be in different ones of the backplane and the electronic circuit module. In an embodiment operating grips 14a,b and detector switches 15a,b may be provided on a frame within the electronic circuit module, within housing 10.
10
Although an embodiment has been shown wherein two engagement hooks 12 are used, it should be appreciated that instead one engagement hook, or more than two engagement hooks may be used. When one engagement hook is used, the other hook being replaced for example by 5 a structure that does not hook into the backplane, first and second detector switch 15a,b on opposite sides of the electronic circuit module are still used, to ensure that detection of disengagement occurs only if operating grips 14a,b are squeezed from both sides. In one embodiment the electronic circuit module may even be held by friction force only, operating grips 14a,b being 10 part of levers to help exert a force to overcome this friction force, or operating grips 14a,b may more simply provide for convenient positions to grip the electronic circuit module in order to remove it from the back plane.
Although embodiments with one or more engagement hooks 12 in the electronic circuit module have been described, it should be appreciated 15 that other engagement mechanisms may be used. For example, engagement hooks 12 may be located in the backplane, to engage with stops in the electronic circuit module. Engagement hooks 12 may be kept engaged by means of a resilient force, created for example by using resilient hooks, and/or one or more a spring acting between the engagement hooks 12 and 20 the electronic circuit module and/or backplane. Although an embodiment has been shown wherein engagement hooks 12 are disengaged by pushing them aside, it should be appreciated that other forms of disengagement may be used. For example protrusions may be removed from stops by rotation from behind the stops.
25 Although embodiments with detector switches that detect the squeezing force from resulting displacement have been described, it should be appreciated that other type of detectors may be used to detect gripping of both operating grips 14a,b, such as touch sensors, stain gauges etc.

Claims (13)

1. Een elektronisch circuitsysteem, waarin het elektronische circuitsysteem is voorzien van - een elektronische circuitmodule; - een eerste en tweede aangrijpoppervlak op onderling 5 tegenovergestelde kanten van de elektronische circuitmodule; - een eerste en tweede detector respectievelijk gekoppeld aan het eerste en tweede aangrijpoppervlak en respectievelijk geconfigureerd om aangrijpen van het eerste en tweede aangrijpoppervlak te detecteren; - een besturingscircuit gekoppeld aan de eerste en tweede detector en 10 geconfigureerd om een ontkoppelingssignaal te genereren in response op detectie door de eerste en tweede detector dat zowel het eerste als het tweede aangrijpoppervlak tegelijkertijd aangegrepen worden.An electronic circuit system, wherein the electronic circuit system is provided with - an electronic circuit module; - a first and second engagement surface on mutually opposite sides of the electronic circuit module; - a first and second detector respectively coupled to the first and second engagement surface and respectively configured to detect engagement of the first and second engagement surfaces; a control circuit coupled to the first and second detector and configured to generate a disconnection signal in response to detection by the first and second detector that both the first and second engagement surfaces are engaged simultaneously. 2. Een elektronisch circuitsysteem volgens conclusie 1, voorzien van een ontkoppelmechanisme, voor het ontkoppelen van de elektronische 15 circuitmodule van een ontvangstgedeelte, waarin tenminste één van het eerste en tweede aangrijpoppervlak geconfigureerd is om het ontkoppelmechanisme te bedienen.2. An electronic circuit system as claimed in claim 1, provided with a disconnection mechanism, for disconnection of the electronic circuit module from a receiving section, wherein at least one of the first and second engagement surface is configured to operate the disconnection mechanism. 3. Een elektronisch circuitsysteem volgens één der voorafgaande conclusies, waarin de elektronische circuitmodule is voorzien van een 20 aangrijphaak, met een uitsteeksel voor het haken achter een aanslag in een ontvangstgedeelte, waarin tenminste één van het eerste en tweede aangrijpoppervlak geconfigureerd is om het uitsteeksel te doen verwijderen van achter de aanslag.3. An electronic circuit system as claimed in any of the foregoing claims, wherein the electronic circuit module is provided with a gripping hook, with a protrusion for hooking behind a stop in a receiving section, in which at least one of the first and second gripping surface is configured to fit the protrusion. remove from behind the attack. 4. Een elektronisch circuitsysteem volgens één der voorafgaande 25 conclusies, waarin de elektronische circuitmodule is voorzien van een eerste en tweede aangrijphaak aan genoemde tegenoverliggende kanten van de elektronische circuitmodule, elk met een uitsteeksel voor het aanhaken achter respectievelijk een eerste en tweede aanslagoppervlak in een ontvangstgedeelte, waarin het eerste en tweede aangrijpoppervlak geconfigureerd zijn om het uitsteeksel van de eerste en tweede aangrijphaak 5 te doen verwijderen vanachter respectievelijk het eerste en tweede aanslagoppervlak.4. An electronic circuit system according to any one of the preceding claims, wherein the electronic circuit module is provided with a first and second engagement hook on said opposite sides of the electronic circuit module, each with a protrusion for hooking behind a first and second stop surface respectively in a receiving section wherein the first and second engagement surfaces are configured to cause the protrusion of the first and second engagement hooks to be removed from behind the first and second abutment surfaces, respectively. 5. Een elektronisch circuitsysteem volgens één der voorafgaande conclusies, waarin de eerste en tweede detector detectieschakelaars zijn die ingericht zijn om verplaatsing van het eerste en tweede aangrijpoppervlak 10 te detecteren van een soort die het gevolg zijn van samenknijpen van het eerste en tweede aangrijpoppervlak naar elkaar toe.An electronic circuit system according to any one of the preceding claims, wherein the first and second detector are detection switches adapted to detect displacement of the first and second engagement surfaces 10 of a kind resulting from pinching together of the first and second engagement surfaces to each other to. 6. Een elektronisch circuitsysteem volgens één der voorafgaande conclusies, waarin de eerste en tweede detector en het besturingscircuit zich in de elektronische circuitmodule bevinden.An electronic circuit system according to any one of the preceding claims, wherein the first and second detector and the control circuit are located in the electronic circuit module. 7. Een elektronisch circuitsysteem volgens één der voorafgaande conclusies, waarin het eerste en tweede aangrijpoppervlak op de elektronische circuitmodule geplaatst zijn.An electronic circuit system according to any one of the preceding claims, wherein the first and second engagement surface are placed on the electronic circuit module. 8. Een elektronisch circuitsysteem volgens conclusie 7, waarin de elektronische circuitmodule is voorzien van een externe behuizing, waarbij 20 het eerste en tweede aangrijpoppervlak zich op de behuizing bevinden.8. An electronic circuit system according to claim 7, wherein the electronic circuit module is provided with an external housing, the first and second engagement surfaces being located on the housing. 9. Een elektronisch circuitsysteem volgens één der voorafgaande conclusies waarin de elektronische circuitmodule het elektronische circuitsysteem is.An electronic circuit system according to any preceding claim, wherein the electronic circuit module is the electronic circuit system. 10. Een elektronisch circuitsysteem volgens één der voorafgaande 25 conclusies, voorzien van een vasthoudgedeelte, waarin de elektronische circuitmodule verwijderbaar is uit het vasthoudgedeelte door de eerste en tweede aangrijpoppervlakken aan te grijpen.10. An electronic circuit system according to any one of the preceding claims, provided with a retaining portion, wherein the electronic circuit module is removable from the retaining portion by engaging the first and second engagement surfaces. 11. Een elektronisch circuitsysteem volgens conclusie 10, waarin het vasthoudgedeelte een eerste connector heeft voor een externe kabel en een tweede connector voor de elektronische circuitmodule, waarbij de tweede connector een eerste terminal heeft voor het aanbieden van een voedingsstroom en een tweede terminal verbonden aan de connector voor de externe kabel, waarbij de elektronische circuitmodule is voorzien van een 5 vermogensschakelaar die tussen de terminals gekoppeld is, waarbij het besturingscircuit ingericht is om het ontkoppehngssignaal te gebruiken om de vermogensschakelaar te openen in response op het aangrijpen van de eerste en tweede oppervlakken.An electronic circuit system according to claim 10, wherein the retaining portion has a first connector for an external cable and a second connector for the electronic circuit module, the second connector having a first terminal for supplying a power supply and a second terminal connected to the connector for the external cable, the electronic circuit module being provided with a power switch coupled between the terminals, the control circuit being adapted to use the disconnection signal to open the power switch in response to engagement of the first and second surfaces. 12. Een werkwijze voor het bedrijven van een elektronisch systeem dat 10 voorzien is van een verwijderbare elektronische circuitmodule en een eerste en tweede aangrijpoppervlak op tegenover elkaar gelegen kanten van de elektronische circuitmodule, welke werkwijze de stappen omvat van - detecteren of het eerste en tweede aangrijpoppervlak tegehjkertijd vastgegrepen gehouden worden; 15. genereren van een ontkoppelsignaal in reactie op genoemde detectie.12. A method of operating an electronic system provided with a removable electronic circuit module and a first and second engagement surface on opposite sides of the electronic circuit module, the method comprising the steps of - detecting whether the first and second engagement surfaces being held at the same time; 15. generating a disconnection signal in response to said detection. 13. Een werkwijze volgens conclusie 12, waarin het eerste en tweede aangrijpoppervlak geconfigureerd zijn om de elektronische circuitmodule te ontkoppelen uit een ontvangstgedeelte, waarbij de werkwijze het interrumperen omvat van een stroom die doorgelust wordt door de 20 elektronische circuitmodule van het ontvangstgedeelte naar een connector voor een externe kabel in het ontvangstgedeelte, waarbij het ontkoppelsignaal gebruikt wordt om het genoemde interrumperen te besturen.A method according to claim 12, wherein the first and second engagement surfaces are configured to disconnect the electronic circuit module from a receiving portion, the method comprising interrupting a current looped through the electronic circuit module from the receiving portion to a connector for an external cable in the receiving section, wherein the disconnect signal is used to control said interrupt.
NL2009698A 2012-10-25 2012-10-25 Electronic circuit system with hot swap protection. NL2009698C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2009698A NL2009698C2 (en) 2012-10-25 2012-10-25 Electronic circuit system with hot swap protection.

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Application Number Priority Date Filing Date Title
NL2009698A NL2009698C2 (en) 2012-10-25 2012-10-25 Electronic circuit system with hot swap protection.
NL2009698 2012-10-25

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NL2009698C2 true NL2009698C2 (en) 2014-04-29

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932005A1 (en) * 1988-10-13 1990-04-19 Allen Bradley Co MODULE FOR A PROGRAMMABLE CONTROL
US20040040117A1 (en) * 2002-09-04 2004-03-04 Purcell Brackets, Inc. Ejector handle
US20050274592A1 (en) * 2004-06-11 2005-12-15 Portwell Inc. Panel device for ATCA main board

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932005A1 (en) * 1988-10-13 1990-04-19 Allen Bradley Co MODULE FOR A PROGRAMMABLE CONTROL
US20040040117A1 (en) * 2002-09-04 2004-03-04 Purcell Brackets, Inc. Ejector handle
US20050274592A1 (en) * 2004-06-11 2005-12-15 Portwell Inc. Panel device for ATCA main board

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