EP1266185A1 - Systeme detonateur electronique - Google Patents

Systeme detonateur electronique

Info

Publication number
EP1266185A1
EP1266185A1 EP01914283A EP01914283A EP1266185A1 EP 1266185 A1 EP1266185 A1 EP 1266185A1 EP 01914283 A EP01914283 A EP 01914283A EP 01914283 A EP01914283 A EP 01914283A EP 1266185 A1 EP1266185 A1 EP 1266185A1
Authority
EP
European Patent Office
Prior art keywords
control unit
detonators
synchronising
detonator
bus
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP01914283A
Other languages
German (de)
English (en)
Inventor
Sune Hallin
Jan Westberg
Elof Jönsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dyno Nobel Sweden AB
Original Assignee
Dyno Nobel Sweden AB
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 Dyno Nobel Sweden AB filed Critical Dyno Nobel Sweden AB
Publication of EP1266185A1 publication Critical patent/EP1266185A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/045—Arrangements for electric ignition
    • F42D1/05—Electric circuits for blasting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/045—Arrangements for electric ignition
    • F42D1/05—Electric circuits for blasting
    • F42D1/055—Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Definitions

  • the present invention relates to an electronic detonator system, more specifically to firing of electronic detonators included in such a detonator system.
  • Detonators in which delay times, activating signals etc. are controlled electronically are generally placed in the category electronic detonators.
  • Electronic deto- nators have several significant advantages over conventional, pyrotechnic detonators. The advantages include, above all, the possibility of changing, or "reprogram- ming", the delay times of the detonators and allowing more exact delay times than in conventional, pyrotechnic detonators. Some systems with electric detonators also allow signalling between the detonators and a control unit .
  • firing of electronic detonators is initiated by means of a firing command which is sent from a control unit.
  • the receipt of the firing command in a detonator starts a non- interruptible countdown of a delay time stored in the detonator, after which time the detonator detonates.
  • a problem of such a method is that at the same time it is necessary to prevent "duds", i.e. detonators that do not detonate although a firing command has been given by the control unit, and unintentional detonations, i.e. firing of a detonator although no firing command has been given by the control unit .
  • a firing command has been given by the control unit, it is to be hoped that all detonators function and that all detonators perceive the firing command.
  • the firing command can be implemented in such. manner that it will be easily perceived by the detonators, which, however, can result in also other commands being interpreted as a firing command, with the ensuing unintentional firing.
  • An object of the present invention is to provide an electronic detonator system and a method in such a system, allowing reliability and flexibility which essentially obviates the above-mentioned problems of prior-art detonator systems.
  • a more concrete object of the present invention is to provide a detonator system, and a method in such a system, which allows functional testing and control of an electronic detonator when this is in a state corresponding to the state immediately prior to detonation.
  • a state is referred to as the ready state.
  • Another concrete object of the present invention is to provide a detonator system, and a method in such a system, which allows use of a very large number of electronic detonators in one and the same blasting ope- ration.
  • the present invention relates to a method for firing one or more detonators, said method allowing the detonators to be controlled and checked also after they have received the firing command.
  • An advantage of the invention is that the firing command is allowed to have a form which significantly distinguishes from all other commands that are sent to the detonators, whereby the risk of other commands being misinterpreted as being a firing command is practically eliminated.
  • a check that all detonators have received the firing command is allowed, owing to the possibility of communication with the detonators occur- ring also after the firing command has been received by the detonators .
  • communication occurs to the electronic detonators by means of digital data packets .
  • digital data packets comprise some overhead, they will always contain at least one binary one and at least one binary zero.
  • the firing command consists of a row of identical data bits, preferably binary zeros
  • a firing command is provided, which significantly differs from said digital data packets.
  • the digital data packets are advantageously designed in such manner that, if the firing command consists of binary zeros, they comprise as many binary ones as possible, which further emphasises the unique state of the firing command.
  • the number of data bits in the firing command is preferably the same as the number of data bits in the digital data packets.
  • controlling and checking of the detonators is thus allowed also after they have received the firing command, and especially checking of the fact that all detonators have received the firing command, by communication with the detonators being possible also after the firing command has been received by the detonators.
  • This is accomplished in an advantageous fashion by the firing command setting the detonators in a ready state, which is the state of the detonators imme- diately prior to detonation, without a final, non-inter- ruptible countdown of a delay time stored in each detonator being started.
  • a non-interruptible countdown of the delay time is instead started at a later synchronising point which is common to the detonators.
  • the synchronising point is indicated by means of a synchronising signal which can easily be perceived by the detonators. Consequently the present invention makes it possible to accomplish firing of electronic detonators, whereby the risk of duds as well as unintentional firing of a detonator is essentially eliminated while at the same time the detonators can be checked when they have received the firing command and are in the ready state, i.e. an armed and fully charged state.
  • the signal which is to be interpreted by the detonators as a synchronising signal can be preprogrammed in the system, or alternatively be indicated by the firing command.
  • An additional advantage of such a firing method is that the blast can be aborted if it is discovered that the detonator is in an incorrect ready state, or if a detonator has, for instance, not perceived the previously given firing command and thus runs the risk of being a dud.
  • More than one firing command may, however, result in the detonators detonating at an incorrect time, relative to the stored delay times, and therefore a careful consideration should be made before a function of this type is implemented in the system.
  • An electronic detonator system according to the present invention is arranged precisely to prevent duds, and additional firing commands as mentioned above will probably not be necessary. However, rules and regu- lations in some countries may require precisely such a reiteration of the firing command.
  • the present invention allows that the system comprises a plurality of slave control units, with the associated detonators, which are connected to a main control unit, from which main control unit the main control of the system is performed.
  • Each slave control unit ensures that the detonators which are connected thereto function according to the commands given by the main control unit. In that case the detonators are controlled by a main control unit, from which commands and enquiries to the detonators are issued.
  • the basic principle of the present invention allows a number of slave control units to be connected to the main control unit . Each of these slave control units controls a set of electronic detonators at the command of the main control unit .
  • a delayed firing of the detonators thus allows a detonator system with a plurality of blasting machines, i.e. a plurality of coordinated sets of detonators each having a bus to a blast - ing machine of its own.
  • a firing command can be given to all detonators, after which each blasting machine checks that the detonators associated with this blasting machine are ready to be fired.
  • an activating command is given to all the blasting machines at the same time.
  • a final, synchronised countdown is then started by all blasting machines sending simultaneously, in response to the activating command, a synchronising signal which results in the non- interruptible countdown of the delay time of the detonators starting at a synchronising point which is common to all detonators. If a blasting machine should indicate that a detonator is in an incorrect ready state, or for some other reason is not ready to be fired, abortion of the firing process is allowed according to the present invention, also after the firing command has been given. Alternatively, the firing process may continue if a fault which is identified in a detonator is considered to be of a non-critical kind.
  • one of the blasting machines prefferably be given a primary role and thus act as a main blasting machine while the remaining blasting machines are given a secondary role and thus act as slave blasting machines.
  • the entire combined system is then handled from the main blasting machine while each slave blasting machine manages the configuration of detonators associated therewith, based on control commands from the main blasting machine.
  • This arrangement makes it possible to control a very large number of deto- nators from one and the same blasting machine, i.e. the main blasting machine, without necessitating an increase of the signalling voltage to a level which means that the safety of the system is jeopardised, owing to the possibility of limiting the number of detonators per bus.
  • firing according to the present invention allows synchronising of all slave blasting machines in a reliable fashion, so that the detonators detonate according to the previously set plan in spite of the fact that they are connected to different blasting machines.
  • the communication between the main blasting machine and the slave blasting machines occurs preferably by means of radio communication or via a bus in the form of a physical cable. It is also possible to use other types of communication between the main blasting machine and the slave blasting machines, such as different forms of microwave communication, acoustic communication or optical communication using e.g. laser.
  • the choice of way of communication between the main blasting machine and the slave blasting machines is usually dependent on the user's requirements for flexibility and reliability, in relation to costs. It is also conceivable that different national or regional regulations require a certain type of communication.
  • test firing of the detonators is allowed, in which these go through all steps leading to detonation, apart from charging of firing power storing means, such as ignition capacitors, and the actual ignition of the explosive charge .
  • the detonators report the result of the test firing to their control unit, whereby a further kind of evaluation of the function of the detonators is allowed.
  • control unit should, in this description, be considered a generic term for such units as send messages to, and receive responses from, the detonators.
  • control units is a logging unit, for use when connecting the detonators to the bus and establishing the identity of each detonator, and a blasting machine, for preparing and firing detonators connected to the bus.
  • Fig. 1 is an overall view of a number of units included in an electronic detonator system
  • Fig. 2 is a schematic view of a control unit with a bus and electronic detonators connected thereto, illustrating how communication with said detonators is accomplished,
  • Figs 3a and 3b schematically illustrate how a question is asked regarding a predetermined status bit in a predetermined detonator
  • Fig. 4 is a flow chart of a general firing process according to the invention
  • Figs 5a and 5b are a more detailed flow chart of a firing method according to the present invention
  • Fig. 6 schematically illustrates a detonator system with a main blasting machine and a plurality of slave blasting machines, according to the present invention
  • Fig. 7 is a flow chart of a general test firing method according to the present invention.
  • the electronic detonator system 1 comprises a plurality of electronic detonators 10 which are connected to a control unit 11, 12 via a bus 13.
  • the bus 13 serves to communicate signals between the control unit 11, 12 and the detonators 10, i.e. to allow communication there- between, and to provide power to the detonators 10.
  • the control unit may consist of a logging unit 11 or a blasting machine 12.
  • the detonator system 1 according to the invention may also comprise a portable message receiver 14, which is adapted to be carried by the person connect- ing the detonators 10 to the bus 13.
  • a computer 15 is preferably included in the system 1, said computer being used to plan the blast.
  • a blasting plan that has been planned in the computer 15 is transferred to one of said control units (logging unit 11 and/or blasting machine 12) .
  • information collected by the logging unit 11, such as addresses of the electronic detonators 10 can be transferred to the computer 15 for further processing, after which a blasting plan is transferred to the blasting machine 12 for the final preparation of said detonators 10.
  • a number of detonators 10 are connected to a control unit 12 (blasting machine) by means of a bus 13.
  • the control unit 12 is adapted to send digital data packets 22 to the detonators 10. These data packets 22 communicate instructions and/or questions regarding the state of the detonators 10.
  • the control unit 12 is besides adapted to receive responses 24 from the detonators 10.
  • the digital data packets 22 consist of 64 bits.
  • the responses are given by the detonators 10 in the form of analog response pulses 24 on the bus 13. It is preferred for the detonators 10 to give said response pulses 24 in the form of short load pulses detectable by the control unit 12.
  • Such load pulses consist, in a preferred embodiment of the present invention, of a temporary load modulation for the detonator, i.e. the power consumption of the detonator is modulated temporarily.
  • a temporary load modulation for the detonator i.e. the power consumption of the detonator is modulated temporarily.
  • any influence, detectable by the control unit, on the bus is feasible for this purpose.
  • a blasting machine is, as mentioned above, the term for the control unit that is used to prepare and fire the detonators 10.
  • the preceding identification of the detonators 10 could be carried out by means of a logging unit 11, which, when connecting detonators 10 to the bus 13, logs addresses etc.
  • each detonator 10 comprises a status register 31 which contains a number of "flags", i.e. information states which can assume either of two possible values, said flags indicating each information state in the detonator 10.
  • the detonators 10 advantageously have a unique identity which is used to transfer addressed messages to them.
  • the digital data packets 22 which the blasting machine 12 sends on the bus 13 can be globally addressed to all detonators, or be addressed to one or a few detonators .
  • the digital data packets 22 can contain a question regarding the state of a certain flag in the detonator 10, in which case a response is expected from the detonator, or an imperative command to the detonator 10, in which case no response is expected.
  • a response is given by the detonators 10 in the manner indicated above by means of influence, detectable by the blasting machine 12, on the bus, preferably a short load pulse 24.
  • said response pulses 24 are only given at a positive response (response in the affirmative) (Fig. 3a) whereas a negative response (response in the negative) appears as the absence of a response pulse (Fig. 3b) , which is illustrated in the Figure at 26.
  • the appearance of the response 24 from each detonator 10 is identical with the appearance of the response from any other detonator.
  • the response pulses 24 are interpreted, which are received from enquiries sent previously (i.e. digital data packets 22 containing a question regarding one or more flags, or status bits, in one or more detonators 10) .
  • two enquiries are imple- mented: a first enquiry asking whether the status bit has the first of two possible values, and a second enquiry asking whether the same status bit has the second of two possible values.
  • the expected number of response pulses 24 i.e. the number of detonators giving a response pulse in response to the question
  • the expected number of response pulses 24 can therefore be minimised, thereby facilitat- ing the interpretation of the responses in the control unit 11, 12.
  • a firing command is given (400) by the blasting machine 12.
  • a flag is set in each detonator which indicates that the firing command is received, and these detonators will consider the receipt of a predetermined data bit in a predetermined data packet (for instance, the first data bit in data packet number 15, counted from the firing command) , which follows the firing command, as a synchronising signal (410) .
  • a countdown (411) of a delay time stored in the respective detonators is started.
  • the data packets following the firing command are used for checking (402), (404), (406), (408) that the detonators 10 are ready for detonation.
  • This is conveniently performed by means of an enquiry (in the form of a digital data packet 22) from the blasting machine 12, said enquiry asking whether there is a detonator 10 which has not perceived the firing command. If no response is received to this question it is assumed that all detonators 10 have perceived the firing command. If a detonator 10 should indicate that it has not received a firing command, the system is reset (420) , or switched off, and the entire firing process is repeated from a new start of the system.
  • a number of questions (402) , (404) , (406) , (408) preferably follow regarding the state of certain flags (i.e. status bits in the status register 31 of the detonators) .
  • the blasting machine 12 deter- mines whether the firing process should continue. If any fault is found which would seriously jeopardise the impact and/or safety of the blast, the firing process is aborted (430) . If the detonators 10 are considered to be in a correct ready state, said synchronising signal is sent (410) from the blasting machine 12.
  • the synchronising signal consists of the first data bit in data packet number 15, counted from the firing command.
  • each detonator starts said countdown of the corresponding delay time (411) .
  • the countdown of the delay time has been started, it is no longer possible to abort the firing process.
  • the countdown in each detonator 10 reaches "zero"
  • the detonator 10 is caused to detonate (440) .
  • Two sets of delay time information are stored in the blasting machine 12. This information comprises delay times for each connected detonator 10.
  • the two sets are checked with regard to each other (510) , with the aim of ensuring (511) that correct delay times are stored. Should contradictory information regarding delay times be discovered at this stage, the operation is aborted and new sets of delay times are transferred to the blasting machine (515) . If no error is discovered in the delay time information, the delay times are transferred to the respective detonators (520) by individually addressed messages in the form of digital data packets 22.
  • the delay time is preferably transferred twice to each detonator, an error flag being set in the detonator if this does not perceive the same delay time in both transfers (522) .
  • a flag is set, indicating that the delay time is received.
  • the blasting machine suitably checks that no detonator lacks a delay time (not shown) . This occurs, for example, by the blasting machine sending a globally addressed enquiry asking whether a detonator has not set the flag indicating that a delay time is received. At this stage it is also possible to check that no detonator has set the error flag.
  • the detonators will set the error flag if not the same delay time as before is involved.
  • a change of a previously transferred delay time must therefore comprise two transfers, with an intermediate reset of the error flag. In this way, the delay times can be changed an optional number of times.
  • ignition capacitor and fuse head are available in each detonator (530) for the risk of duds to be minimised. This is preferably performed by checking a number of flags which indicate when certain voltage levels have been reached in the ignition capacitors of the detonators 10. If an ignition capacitor and/or a fuse head is missing in one or some of the detonators 10, and this is assessed to be a serious error based on previously set criteria, the firing pro- cess is aborted (550) .
  • the blasting machine now increases the voltage of the bus 13 (536) .
  • the ignition capacitors then begin to be charged to full ignition voltage.
  • a flag in each detonator indi- cates when full ignition voltage has been reached in the ignition capacitor.
  • the blasting machine suitably sends global enquiries, in the form of digital data packets 22, asking whether a detonator 10 has an ignition capacitor that has reached full ignition voltage.
  • the blasting machine 12 changes to ask the opposite question: if a detonator has an ignition capacitor which has not reached full ignition voltage.
  • the ignition capacitors of all detonators have reached full ignition voltage (560) .
  • the charging of the ignition capacitors is verified in the shortest possible time.
  • said arming, and the associated charging of the ignition capacitors occurs by an operator physically pressing an arming button on the blasting machine 12, which arming button must be pressed all the time for the charging of the ignition capacitors to be retained. Firing is suitably initiated by the operator physically pressing a second button, a firing button, while at the same time the arming button is kept pressed.
  • a signal (audible or visual) is preferably given (562), which indicates when all ignition capacitors are charged to full ignition voltage, i.e. when the firing button can be pressed.
  • a firing command is sent (566) on the bus 13 by the blasting machine 12.
  • the firing command differs from all other digital data packets 22 that are sent by the blasting machine 12. The reason for this is that no digital data packets should, by mistake, run the risk of being misinterpreted as a firing command.
  • the firing command consists of a digital data packet 22 which only consists of a sequence of binary zeros.
  • the condition for a digital data packet 22 to be interpreted as a firing command is that it should at least contain a certain number of binary zeros.
  • the counting of the number of zeros is performed in a plurality of indepen- dent counters in the detonators • 10 , a majority decision deciding whether a firing command has been received. If a majority of counters indicate the smallest number of zeros for a firing command, the command is thus interpreted as a firing command.
  • the countdown of the delay time stored in each detonator is not started immediately after the firing command has been received in the detonators.
  • the ignition capacitors will gradually be automatically discharged by means of discharge resistors arranged in the detonators 10, so-called bleeder resistors.
  • the number of data packets which must be sent after the firing command for the countdown of the delay time to be started has quite optionally been selected to be fourteen in this example .
  • the final, non- interruptible , countdown of the delay time thus starts at a synchronising point (580) which is delayed in relation to the firing command and common to all detonators.
  • This synchronising point occurs, in the preferred embodiment of the present invention, when receiving in each detonator a predetermined data bit in a predetermined data packet, which follows the firing command.
  • the synchronisation point occurs at the receipt of a predetermined data bit in data packet number 15, counted from the firing command.
  • other types of delayed synchronisation which allows com- munication with the detonators 10 also after they have received a firing command and thus are in a ready state, are within the scope of the present invention.
  • the detonators according to the present invention, can be checked when they are in said ready state, the risk of incorrect function after the synchronising point is, however, reduced to a mini- mum .
  • the above-mentioned process is also very well suited to be carried out in a system with a main blasting machine 62 and a number of slave blasting machines 64, which is schematically illustrated in Fig. 6.
  • the process is then analogous with that described above, except that the main control of the system 1 occurs from the main blasting machine 62.
  • arming, charging, preparation, checking, firing etc. of the detonators 10 are ordered by signalling to the slave blasting machines 64.
  • the slave blasting machines 64 in turn see to it that the functions ordered are carried out for the detonators 10 which are connected to the respective slave blasting machines 64.
  • the slave blasting machines 64 report the results of the functions to the main blasting machine 62 which is thus allowed to have the overall control of the entire system 1 without directly needing to communicate with all detonators 10.
  • a preferred method in a system with main and slave blasting machine as above will now be described.
  • the main blasting machine 62 is loaded with tables of delay times for the detonators 10 of the respective slave blasting machines 64, said delay times being verified in the same way as described above (510) . Each table is transferred to the corresponding slave blasting machine 64 which in turn sees to it that the delay times are transferred (520) to the detonators 10 in the same way as described above. If an error has been found in one of the detonators 10, this is reported by the slave blasting machine 64 of the detonator in question to the main blasting machine 62. A decision whether the process is to be aborted will then be made by the main blasting machine. However, the slave blasting machines 64 can be arranged to make certain decisions which need not be forwarded to the main blasting machine 62.
  • rules for the conditions under which the entire firing is to be aborted can be implemented in each slave blasting machine 64, in which case such a condition, if any, is communicated back to the main blasting machine, which in turn sees to it that the firing is aborted.
  • an activating command is sent from the main blasting machine 62 to all slave blasting machines 64 at the same time, which slave blasting machines, in response to the activating command, simultaneously give the synchronising signal (508) on the respective buses 13.
  • synchronisation of all detonators is provided although they are connected to different slave blasting machines 64.
  • test firing is carried out before the detonators are armed and fired, which is schematically illustrated by the flow chart in Fig. 7. Such test firing will be described below.
  • test firing Before the firing process described above is started, it may be desirable to carry out a test firing.
  • the purpose of a test firing can be to check that the detonators 10 have perceived correct delay times, that the receipt of said digital data packets 62 is satisfactory, that said synchronisation (410) , (580) functions in the intended manner, that the countdown of delay times (411) , (585) occurs at an expected rate, and that the overall function of the detonators is satisfactory.
  • the test firing is started by the blasting machine 12 sending a test firing command (710) on the bus 13. After receipt of this test firing command in each deto- nator there is performed, similarly to the actual firing command, a synchronisation (720) which is delayed in relation to the receipt of the test firing command. Optionally, this is preceded by a check (712), (713) of certain flags in the detonators 10, like in the case of the sharp firing. If desired, it is also possible to check that the test firing command has been perceived (711) by all detonators 10 and optionally reset (714) the system 1 and send the test firing command once more. At the synchronising point the countdown of the delay time (730) stored in each detonator is started in the same way as before.
  • the detonator When the countdown of the delay time in each detonator reaches "zero", the detonator gives an analog response pulse 26 (740) on the bus 13. This is the same type of analog response pulse 26 as the one given in the previously described communication between the blasting machine 12 and the detonators 10.
  • the blasting machine 12 detects (750) these response pulses 26 and obtains in this way information about when (i.e. how long after the synchronising point) each detonator will detonate in a coming sharp firing, whereby an evaluation of the test firing is allowed. It should be pointed out that the test firing is not preceded by arming of the detonators .
  • the test firing can advantageously have a scaling function, through which the stored delay times are multiplied by a scale factor.
  • the scale factor is 1, 2, 4, 8 or 16. The higher scale factor is selected to be used, the longer it takes to carry out the test firing.
  • the scaling function is a very useful tool for high resolution checking and test of stored delay times as well as the synchronisation of the detonators, particularly when using a plurality of blasting machines .
  • the test firing results in the detonators giving an analog response pulse on the bus.
  • an analog response pulse is about 2 ms, which means that, without using said scaling function, it is not possible to distinguish two response pulses which are less than 2-3 ms from each other. It is desirable for the response pulses not be made shorter than said 2 ms since then there is a risk of the detectability in the control unit of these response pulses being reduced to an unacceptably low level. At the same time, however, two instants of detonation can be significantly closer to each other than said 2 ms . By using the scaling function, a high resolution test firing can thus be performed, which gives a resolution which is considerably higher than 2 ms .
  • test firing of higher resolution i.e. a test firing using a higher scale factor
  • a test firing with the scale factor 8 takes twice as long as a test firing with the scale factor 4, and therefore it should be taken into consideration whether a high resolution is really necessary or if preference is given to a quick firing process.
  • the test firing can be carried out in a system having a main blasting machine and slave blasting machines. Each slave blasting machine reports the time distribution of the responses from the detonators to the main blasting machine, which in turn evaluates the result of the test firing.
  • test firing is most desirable, especially when a system with slave blasting machines is used since it is then allowed via the main blasting machine to check that the synchronisation of all slave blasting machines and the detona- tors connected thereto functions in the intended manner.
  • the main blasting machine receives information whether correct delay times are stored in the detonators, and whether the countdown rate of these delay times is correct.

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Abstract

L'invention concerne un procédé permettant d'allumer les détonateurs électroniques d'un système détonateur électronique, ces détonateurs étant connectés à une unité de commande via un bus. L'unité de commande envoie une commande d'allumage ou une commande d'allumage test aux détonateurs qui commencent le compte à rebours d'un délai mémorisé dans chaque détonateur et ce, à un moment de synchronisation qui est retardé par rapport à ladite commande. Au terme du compte à rebours, les détonateurs détonent s'il s'agit d'une commande d'allumage et, s'il s'agit d'une commande d'allumage test, donnent une réponse au moment où ils auraient dû détoner s'il y avait eu une commande d'allumage. La synchronisation retardée permet la vérification et la commande des détonateurs une fois ladite commande reçue. L'invention comprend un procédé analogue dans un système ayant plusieurs unités de commande asservies reliées à plusieurs détonateurs, et une unité de commande principale, ce système étant contrôlé au niveau de la commande de l'unité de commande principale.
EP01914283A 2000-03-10 2001-03-09 Systeme detonateur electronique Withdrawn EP1266185A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0000802 2000-03-10
SE0000802A SE515809C2 (sv) 2000-03-10 2000-03-10 Förfarande vid avfyring av elektroniksprängkapslar i ett detonatorsystem samt ett detonatorsystem innefattande elektroniksprängkapslarna
PCT/SE2001/000507 WO2001067031A1 (fr) 2000-03-10 2001-03-09 Systeme detonateur electronique

Publications (1)

Publication Number Publication Date
EP1266185A1 true EP1266185A1 (fr) 2002-12-18

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EP01914283A Withdrawn EP1266185A1 (fr) 2000-03-10 2001-03-09 Systeme detonateur electronique

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US (1) US20030136289A1 (fr)
EP (1) EP1266185A1 (fr)
JP (1) JP2003526074A (fr)
KR (1) KR20020087412A (fr)
AP (1) AP2002002618A0 (fr)
AU (2) AU2001239630B2 (fr)
CA (1) CA2402119A1 (fr)
CZ (1) CZ20022983A3 (fr)
HU (1) HUP0300137A2 (fr)
IL (1) IL151513A0 (fr)
MX (1) MXPA02008595A (fr)
NO (1) NO20024230L (fr)
PL (1) PL358012A1 (fr)
RU (1) RU2255303C2 (fr)
SE (1) SE515809C2 (fr)
WO (1) WO2001067031A1 (fr)
YU (1) YU67502A (fr)
ZA (1) ZA200207222B (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6584907B2 (en) 2000-03-17 2003-07-01 Ensign-Bickford Aerospace & Defense Company Ordnance firing system
US7644661B1 (en) * 2000-09-06 2010-01-12 Ps/Emc West, Llc Networked electronic ordnance system
US7752970B2 (en) 2000-09-06 2010-07-13 Ps/Emc West, Llc Networked electronic ordnance system
DE10147726A1 (de) * 2000-09-30 2002-07-25 Dynamit Nobel Gmbh Verfahren zum Anschluß von Zündern an ein Zündsystem
US6945174B2 (en) 2000-09-30 2005-09-20 Dynamit Nobel Gmbh Explosivstoff-Und Systemtechnik Method for connecting ignitors in an ignition system
PT102997A (pt) * 2003-07-10 2005-01-31 Espanola Explosivos Dispositivo electronico de detonacao e processo de operacao do dito dispositivo
US20050190525A1 (en) * 2003-07-15 2005-09-01 Special Devices, Inc. Status flags in a system of electronic pyrotechnic devices such as electronic detonators
US7577756B2 (en) 2003-07-15 2009-08-18 Special Devices, Inc. Dynamically-and continuously-variable rate, asynchronous data transfer
AR046498A1 (es) * 2003-07-15 2005-12-14 Detnet South Africa Pty Ltd Deteccion del estado de un fusible de detonador
US7054131B1 (en) * 2003-07-15 2006-05-30 Special Devices, Inc. Pre-fire countdown in an electronic detonator and electronic blasting system
US7107908B2 (en) * 2003-07-15 2006-09-19 Special Devices, Inc. Firing-readiness diagnostic of a pyrotechnic device such as an electronic detonator
US8474379B2 (en) 2004-01-16 2013-07-02 Rothenbuhler Engineering Co. Remote firing device with diverse initiators
WO2006122331A1 (fr) * 2005-05-09 2006-11-16 Detnet South Africa (Pty) Ltd Gestion de commande d'un systeme d'explosion
US20080098921A1 (en) 2006-10-26 2008-05-01 Albertus Abraham Labuschagne Blasting system and method
CA2668327C (fr) * 2006-10-30 2012-09-25 Detnet South Africa (Pty) Ltd Systeme et procede d'explosion
US20100180788A1 (en) * 2007-02-16 2010-07-22 Orica Explosives Technology Pty Ltd Method of communication at a blast stie, and corresponding blasting apparatus
FR2984484B1 (fr) * 2011-12-19 2018-06-15 Davey Bickford Systeme de mise a feu de plusieurs ensembles de detonateurs electroniques
CA2923453C (fr) 2013-09-06 2020-06-30 Austin Star Detonator Company Procede et appareil de journalisation de detonateurs electroniques
KR101354783B1 (ko) 2013-09-24 2014-01-23 주식회사 한화 자탄용 전자식 자폭신관을 검사하는 방법
CA2932398C (fr) 2013-12-02 2019-03-05 Austin Star Detonator Company Procede et appareil d'abattage a l'explosif sans fil
WO2018033881A1 (fr) * 2016-08-19 2018-02-22 Pavuluri Bharath Système d'exploseur-détonateur électronique
FR3090087B1 (fr) * 2018-12-17 2022-06-24 Commissariat Energie Atomique Procédé de mise à feu d’un ensemble de détonateurs électroniques
KR102129304B1 (ko) * 2018-12-19 2020-07-02 주식회사 한화 무선 발파 시스템 및 이의 동작 방법
AU2020333418A1 (en) * 2019-08-16 2022-03-10 Omnia Group (Proprietary) Limited Secure arming and firing in an electronic blasting system
KR102419118B1 (ko) * 2019-12-09 2022-07-07 주식회사 한화 실시간 클럭을 이용하여 지연기폭회로를 제어하는 장치 및 그 방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE416349B (sv) * 1976-05-18 1980-12-15 Nitro Nobel Ab Metod och anordning for initiering av elektriska sprengkapslar
US4445435A (en) * 1980-05-05 1984-05-01 Atlas Powder Company Electronic delay blasting circuit
DE3367674D1 (en) * 1982-06-03 1987-01-02 Ici Plc Apparatus for initiating explosions and method therefor
CA1233896A (fr) * 1983-04-11 1988-03-08 Kenneth N. Jarrott Amorce electronique a temporisation programmable
US4674047A (en) * 1984-01-31 1987-06-16 The Curators Of The University Of Missouri Integrated detonator delay circuits and firing console
US5189246A (en) * 1989-09-28 1993-02-23 Csir Timing apparatus
CA2110742C (fr) * 1992-12-07 1999-09-14 Michael John Camille Marsh Appareillage de surface pour mise a feu d'explosifs
US5460093A (en) * 1993-08-02 1995-10-24 Thiokol Corporation Programmable electronic time delay initiator
DE19581065C2 (de) * 1994-07-28 1998-08-27 Asahi Chemical Ind Elektronischer Verzögerungszünder und elektrischer Initialzünder
US5767437A (en) * 1997-03-20 1998-06-16 Rogers; Donald L. Digital remote pyrotactic firing mechanism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0167031A1 *

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SE0000802D0 (sv) 2000-03-10
KR20020087412A (ko) 2002-11-22
RU2255303C2 (ru) 2005-06-27
AU3963001A (en) 2001-09-17
WO2001067031A1 (fr) 2001-09-13
JP2003526074A (ja) 2003-09-02
CA2402119A1 (fr) 2001-09-13
AP2002002618A0 (en) 2002-09-30
SE0000802L (sv) 2001-09-11
YU67502A (sh) 2004-05-12
ZA200207222B (en) 2003-09-09
IL151513A0 (en) 2003-04-10
MXPA02008595A (es) 2004-08-23
NO20024230D0 (no) 2002-09-05
US20030136289A1 (en) 2003-07-24
NO20024230L (no) 2002-11-08
CZ20022983A3 (cs) 2003-03-12
PL358012A1 (en) 2004-08-09
SE515809C2 (sv) 2001-10-15
AU2001239630B2 (en) 2004-08-19
HUP0300137A2 (en) 2003-05-28

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