FR3041837A1 - METHOD FOR THE SUMMING OF ELECTRICAL PULSES AND DEVICE THEREFOR - Google Patents

Abstract

The present invention relates to a method for summing electrical pulses of a first and a second input signal comprising steps of: immediate generation of a pulse of a predetermined duration (D2), when one input signals have a pulse shifted from the last generated pulse by a delay greater than a predetermined time (D2-D1); - delayed generation of a pulse of predetermined duration (D2), when one of the input signals has a pulse shifted from the last pulse generated by a delay less than the predetermined delay (D2-D1) so that the new pulse generated at the output is shifted from the last pulse generated at the output of a delay equal to the predetermined delay (D2-D1).

Description

Method of summing electrical pulses and associated device

FIELD OF THE INVENTION

The present invention relates to devices for adding electrical pulses of at least two pulse trains.

STATE OF THE ART

As illustrated in FIGS. 1 and 2, the industrial meters of electrical energy use electric meters 2 coding the quantity of energy consumed in the form of pulses, the pulses having a defined pulse weight. The output contacts 21, 22, 23, 24 of the electric meters 2 close and open at a frequency representative of the actual consumption. Thus, the higher the power consumption, the higher the pulse frequency.

A power management system 3 connected to the electric meter 2 counts the number of pulses received, and deduces the resulting consumption knowing the weight of each pulse. The energy management system 3 comprises input contacts 31, 32, 33, 34 intended to be connected to the output contacts 21, 22, 23, 24 of the electric meter 2.

Some electric meters 2 are able to count, on the one hand, the active energy consumed, and on the other hand the reactive energy consumed, which can be positive, or negative.

As illustrated in FIG. 1, the electric meters 2 equipping the current industrial electric energy meters HTA comprise two output contacts 21, 23, an output contact 21 accounting for the active energy P, and a single output contact 23 accounting for the output. reactive energy Q which therefore represents Q + + | Q- |. Current energy management systems 3 therefore have only one input contact 33 for accounting for the reactive energy in absolute value.

There is also a new type of electric meter 2, as illustrated in FIG. 2, which comprises an output contact 21 accounting for the active energy P, and two output contacts 22, 24 accounting for the reactive energy: the one 22 intended to to count the positive reactive energy (Q +), the other 24 to count the negative reactive energy (Q-).

The new electric meters 2 are compatible with energy management systems 3 which would include an input contact 32 for accounting for the positive reactive energy and an input contact 34 for accounting for the negative reactive energy.

On the other hand, the new electric meters 2 are not compatible with the current energy management systems 3 which comprise only one input contact 33 intended to count the reactive energy in absolute value.

As illustrated in FIG. 3a, it has been proposed to interpose an OR logic circuit between the output contacts 22 and 24 of the electric meter 2 and the input contact 33 of the management system 3.

However, an OR logic circuit does not make it possible to discern a pulse for the energy Q +, and one for Q-, when the two output contacts 22, 24 of the counter are closed at the same time.

Thus, in the example illustrated in FIG. 3b, the logic circuit OR receives on its first input 5 pulses and on its second input 4 pulses, but instead of generating 9 output pulses, it generates only 5 pulses.

As illustrated in FIG. 4a, it has been proposed to interpose a logic circuit ORe (exclusive OR, one OR the other, but not both) between the output contacts 22, 24 of the electric meter 2 and the contact d entry 33 of the management system 3.

Now, a circuit OUe does not make it possible to count two pulses which begin and finish at the same time, and would count a single pulse for two pulses, the second beginning at the moment or ends the first one.

Thus, in the example illustrated in FIG. 4b, the logic circuit ORe receives on its first input 5 pulses and on its second input 4 pulses, but instead of generating 9 output pulses, it generates only 6 pulses.

In addition, in the case of an OR logic circuit or an ORe logic circuit, the output pulses are not normalized. However, the energy management systems are adapted to operate with industrial electrical energy meters that comply with certain standards imposing a minimum pulse duration and a minimum duration between two pulses.

In particular, industrial meters for electrical energy must comply with standard NF EN 62053-31 (09/1998). As illustrated in FIG. 5, the standard NF EN 62053-31 (09/1998) imposes pulses having a minimum duration of 30ms and a duration between two pulses of at least 30ms.

SUMMARY OF THE INVENTION

An object of the invention is therefore to provide a summation system of pulses for summing pulses of two pulse trains by outputting standard pulses.

This object is achieved in the context of the present invention by means of a summation device for adding the pulses of a first and a second input signal, comprising: a first relay controlled by the first signal; Entrance ; a first primary contact of the closed contact type controlled by the first relay; a second relay controlled by the second input signal; a second primary contact of the closed contact type controlled by the second relay (12); an AND logic gate having as inputs a first tertiary contact of the first relay and a second tertiary contact of the second relay; a third relay controlled by the AND logic gate; a third primary contact, of the closed contact type, controlled by the third relay with a first delay on opening, an OR logic gate having, as inputs, the three primary contacts, the three primary contacts being in parallel with one another; another, - a pulse generator comprising: - a fourth relay in series with a first branch and a second branch in parallel with each other; the first branch comprising, in series, a first secondary contact, of the open contact type, controlled by the fourth relay with a second delay on closing and opening, a second secondary contact, of the closed contact type, controlled by the fourth relay with a second delay on opening; the second branch comprising a third secondary contact, of the open contact type, controlled by the fourth relay with a second delay on closing and opening, the second branch being in series with the OR logic gate; an output contact, of the closed contact type, controlled by the fourth relay; so that the pulse generator generates, for each pulse of one of the input signals, a pulse of a predetermined duration, the pulses generated being separated from each other by a duration greater than or equal to a predetermined duration. The invention makes it possible to generate a standard pulse for each input pulse, irrespective of the duration of the input pulse.

In particular, when pulses overlap at the input, the summation system of pulses according to the invention generates two standard pulses output.

By standard pulses is meant pulses of a predefined duration separated from one another by a predefined duration. The invention makes it possible in particular to adapt an energy meter comprising an output accounting for the positive reactive energy Q + and an output accounting for the negative reactive energy Q-, to a power management system comprising only the parameter reactive energy quantized in absolute value by a single pulse contact, which represents Q + + \ Q_ |, while complying with the NF EN 62053-31 (09/1998) standard. The invention is advantageously completed by the following characteristics, taken individually or in any of their technically possible combinations: the duration of the first delay is greater than or equal to that of the second delay; - the duration of the first period is twice that of the second period; the first primary contact and the second primary contact are immediate closing and opening contacts; the second secondary contact is an immediate closing contact; the logic gate AND consists of two tertiary contacts of the closing contact type, respectively controlled by the first relay and the second relay; the two tertiary contacts are in series with respect to one another; the relays have a monostable operation; - the relays are electromechanical relays; each relay comprises an electromagnet which, when energized, transmits a force to the contacts controlled by said relay; - relays are electronic relays. The invention also proposes a method for summing electrical pulses of a first and a second input signal comprising steps of: immediate generation of a pulse of a predetermined duration, when one of the input signals has a pulse shifted from the last generated pulse by a delay greater than a predetermined time; - delayed generation of a pulse of predetermined duration, when one of the input signals has a pulse shifted from the last pulse generated by a delay less than the predetermined delay so that the new pulse generated at the output is shifted from the last pulse generated at the output of a delay equal to the predetermined time.

DESCRIPTION OF THE FIGURES Other objectives, characteristics and advantages will become apparent from the following detailed description with reference to the drawings given by way of nonlimiting illustration, among which: FIG. 1 represents a state of the art energy meter; having a single output contact for reactive energy and a compatible power management system; FIG. 2 represents a state-of-the-art energy meter comprising two output contacts for the reactive energy and a compatible energy management system; FIG. 3a illustrates an OR logic system interposed between a state-of-the-art energy meter having two output contacts for the reactive energy and a power management system comprising a single input contact for reactive energy; FIG. 3b illustrates the signal obtained by summing two pulse trains with an OR logic system; FIG. 4b illustrates an exclusive OR logic system interposed between a state-of-the-art energy meter having two output contacts for the reactive energy and a power management system comprising a single input contact. for reactive energy; FIG. 5 represents a standard pulse according to standard NF EN 62053-31 (09/1998); FIG. 6 represents an energy meter comprising two output contacts for the reactive energy connected, by means of a pulse summation device according to the invention, to a power management system comprising a single input contact for reactive energy; FIG. 7 illustrates a pulse summation device according to the invention; FIG. 8 illustrates the signal obtained by summation of two pulse trains with a pulse summation device according to the invention; FIG. 9 illustrates the case in which the first input signal and the second input signal simultaneously present a pulse; FIG. 10 illustrates the case in which the second input signal has a pulse before the end of the pulse of the first input signal; FIG. 11 illustrates the case in which the second input signal has a pulse at the end of the normalized pulse of the first input signal; FIG. 12 illustrates the case in which the second input signal has a pulse after the end of the pulse of the first input signal but before the lapse of the duration to be observed between two pulses; FIG. 13 illustrates the situation in which the second input signal has a pulse after the duration of the duration to be respected between two pulses; FIG. 14 illustrates a fictitious case in which there is one pulse every 130 ms on an input contact and one pulse every 260 ms on the other input contact.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 6 represents an energy meter 2, a power management system 3, and a summation device 1 according to the invention.

The energy management system 3 comprises an input 31 for accounting for the active energy and an input 33 for accounting for the reactive energy.

The pulse type energy meter 2 provides an electrical pulse for each predetermined amount of electrical energy consumed.

The energy meter 2 has an output contact 21 for the active energy P, an output contact 22 for the positive reactive energy Q +, and an output contact 24 for the negative reactive energy Q_.

The energy meter 2 is connected to the energy management system 3 via the pulse summing device 1 according to the invention.

Referring to Figure 7, the two output contacts 22 and 24 of the energy meter 2 are each represented by a contact closing at each pulse.

These two contacts 22 and 24 behave as relays each connected to a positive reactive energy counter and a negative reactive energy counter.

With reference to FIG. 7, the pulse summing device 1 comprises: a first relay 11 (corresponding in this case to Q +) comprising a first primary contact T1, of the closed contact type, and a first tertiary contact T7, closing contact type controlled by the first input signal; a second relay 12 (corresponding in this case to Q-) comprising a second primary contact T2, of the closed contact type, and a second tertiary contact T8, of the closed contact type, controlled by the second input signal; an AND logic gate 15 having as its inputs the two tertiary contacts T7 and T8 a third relay 13 (corresponding in this case to Q + ET | Q_ |) comprising a third primary contact T3, of the closing contact type delayed at the opening with a delay D1, controlled by the AND logic gate 15.

The three primary contacts T1, T2 and T3 arranged in parallel together form an OR gate 19.

The three primary contacts T1, T2, T3 are contacts of the closed contact type.

The third primary contact T3 is a contact whose opening is delayed by a first delay D1 and the immediate closing.

The first primary contact T1 and the second primary contact T2 are contacts whose opening and closing are immediate.

Immediate opening / closing means that the contact is open / closed when the relay which controls it is activated / deactivated.

By opening / closing with delay, the contact is open / closed with a delay compared to when the relay which controls it is activated / deactivated.

The AND logic gate 15 consists of two tertiary contacts T7 and T8 arranged in series.

The two tertiary contacts T7 and T8 are of the closed contact type whose opening and closing are immediate.

The summation device 1 additionally comprises a pulse generator 16.

The pulse generator 16 comprises: a fourth relay 14 comprising three secondary contacts T4, T5, T6; a first branch 17; - a second branch 18.

The first branch 17 and the second branch 18 are arranged in parallel with each other. The fourth relay 14 is in series with the two branches 17 and 18.

The first branch 17 comprises, in series, the first secondary contact T5, of the open-ended contact opening and closing type with a second delay D2, and the second secondary contact T6, of the closing contact type, delayed to the opening with the same delay D2. The two secondary contacts T5 and T6 are controlled by the fourth relay 14.

The second branch comprises the third secondary contact T4, of the open-ended contact type on opening and closing with the second delay D2 and controlled by the fourth relay 14 in series with the OR logic gate 19 consisting of the primary contacts T1, T2, T3 in parallel ..

The first secondary contact T5 is of the open contact type controlled by the fourth relay 14 whose closing and opening are delayed by a second delay D2.

The second secondary contact T6 is of the closed contact type, controlled by the fourth relay 14 whose opening is delayed by a second delay D2 and the immediate closing.

The third secondary contact T4 is of the open contact type, controlled by the fourth relay 14 whose closure and opening are delayed by a second delay D2.

The fourth relay 14 and its secondary contacts T4, T5, T6 generate a normalized pulse of duration D2 to each pulse received on the second branch 18, even if the input pulse is less than the duration D2.

The fourth relay 14 and its secondary contacts T4, T5, T6 form a flashing system which generates standard pulses of a duration D2 separated from the next one by a duration D2 at each pulse received on the second branch 18, if the pulse input is greater than the duration D1.

In the example described below, the duration of the first delay D1 is twice that of the second delay D2. The delay D1 is of duration 2d and the delay D2 of duration d. The duration d is typically equal to 30 ms.

Relays 11, 12, 13 and 14 are members which comprise a control circuit configured to control the opening / closing of one or more output contacts.

The relays 11, 12, 13 and 14 may in particular be electromechanical relays.

An electromechanical relay is an electrical device that allows the opening / closing of one or more output contacts by a control circuit.

An electromechanical relay typically comprises an electromagnet which, when energized, transmits a force to an electrical switching system which constitutes the output contact of the electromechanical relay.

The relays 11, 12, 13 and 14 can also be electronic, and have the same output behavior with the same input elements.

The relays 11, 12, 13 and 14 have a monostable operation, that is to say that their contacts switch when the electromagnet is energized and the return to the initial state is done when the electromagnet is no longer powered .

The so-called "closed" contacts, also called "normally open contacts" (NO) are open in the rest position, and closed when they are actuated by the control circuit.

The so-called "open" contacts, also called "normally closed contacts" (NC) are closed in the rest position, and open when they are actuated by the control circuit.

Various known electro-magnetic or electronic systems can be used to create the delay in opening or closing the contact.

The operation of the pulse summing device 1 is described below with reference to FIGS. 9 to 14.

When the first input signal has a pulse (of a duration = d), the first contact 22 of the counter 2 closes immediately and actuates the first relay 11 (in this case corresponding to Q +) which controls the immediate closing of the T1 and T7 contacts.

The third secondary contact T4 being initially closed, the contacts T1 and T4 are simultaneously closed, the fourth relay 14 is actuated and controls the immediate closure of the output contact 31, as well as the immediate closure of the second secondary contact T6, and the opening secondary contacts T4 and T5 with a delay d.

After a delay d, secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which terminates the pulse generated at the output.

After a delay 2d, the secondary contacts T4 and T5 close and the second secondary contact T6 reopens, to return to the initial position.

When the second input signal has a pulse (of a duration = d), the second contact 24 of the counter 2 closes immediately and actuates the second relay 12 (in this case corresponds to Q-) which controls the immediate closure T2 and T8 contacts.

The third secondary contact T4 being initially closed, the contacts T2 and T4 being simultaneously closed, the fourth relay 14 is actuated and controls the immediate closure of the output contact 31, as well as the immediate closure of the second secondary contact T6, and the opening of the secondary contacts T4 and T5 with a delay d.

After a delay d, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which terminates the pulse generated at the output.

After a delay 2d, the second secondary contact T6 reopens and the secondary contacts T4 and T5 close, to return to the initial position.

FIG. 9 illustrates the case in which the first input signal and the second input signal simultaneously present a pulse at t = 0.

When the first input signal and the second input signal simultaneously present a pulse (of a duration = d), the first contact 22 of the counter 2 closes and actuates the first relay 11 which controls the immediate closure of the contacts T1 etT7.

Simultaneously, the second contact 24 of the counter 2 closes and actuates the second relay 12 which controls the immediate closure of the contacts T2 and T8.

The tertiary contacts T7 and T8 being simultaneously closed, the third relay 13 (in this case corresponds to Q + + Q-) commands the immediate closure of the third primary contact T3 which will reopen after a delay 2d + the pulse duration of the contacts 22 and 24).

The third secondary contact T4 being initially closed, the contacts T1, T2, T3 and T4 are simultaneously closed, the fourth relay 14 is actuated and controls the immediate closure of the output contact 31, as well as the immediate closure of the second secondary contact T6, and the opening of the secondary contacts T4 and T5 with a delay of

After a delay d, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens which ends the first pulse output.

In addition, the third secondary contact T4 being open, the fact that the third primary contact T3 remains closed after the delay d does not operate the fourth relay 14 which does not generate a new pulse.

On the other hand, at t = 2d, when the third secondary contact T4 closes while the third primary contact T3 is still closed, the fourth relay 14 is actuated which generates a second pulse.

The third relay 13 is actuated only when the tertiary contacts T7 and T8 are closed simultaneously, therefore by repercussion, when the latter are actuated respectively by the relays 11 and 12, themselves being respectively controlled by the contacts 22 and 24. third relay 13 is actuated when the contacts 22 and 24 are simultaneously closed.

The third relay 13 actuates the third primary contact T3 which is a delayed closing contact at opening with the delay D1. This delay will only be initiated when the third relay 13 will no longer be controlled, that is to say when one or the other of the contacts 22 or 24 will no longer be actuated, or when these two contacts will no longer be closed. same time.

The third contact T3 will therefore be closed the time during which the contacts 22 and 24 are simultaneously closed plus the delay D1. At t = 2d + the closing simultaneity time of the contacts 22 and 24, the third primary contact T3 reopens. At t = 3d, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which ends the second pulse generated at the output.

After a delay 4d, the second secondary contact T6 reopens and the secondary contacts T4 and T5 close to return to their initial position.

Thus, if the first input signal and the second input signal simultaneously have a pulse, the pulse summing device 1 outputs two pulses of a duration d spaced from each other by an interval of time d.

FIG. 10 illustrates the case in which the first input signal has a pulse at t = 0 and the second input signal a pulse at a time t <d, that is to say before the end of the standard pulse of the first signal.

When the first signal has a pulse (of a duration = d), at t = 0, the first contact 22 of the counter 2 closes and actuates the first relay 11 which controls the immediate closure of the contacts T1 and T7.

The third secondary contact T4 being initially closed, the contacts T1 and T4 are simultaneously closed, the fourth relay 14 is actuated and generates a first normalized pulse on the output contact 31, as well as the immediate closure of the second secondary contact T6.

When the second signal has a pulse (of a duration = d), before the expiry of the delay d, the second contact 24 of the counter 2 closes and actuates the second relay 12 which controls the immediate closure of the contacts T2 and T8.

The tertiary contacts T7 and T8 being simultaneously closed, the third relay 13 controls the immediate closing of the third primary contact T3 which will reopen after a delay 2d + the closing simultaneous time of the contacts 22 and 24. At t = d, the contacts secondary T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which terminates the first pulse generated at the output.

In addition, since the third secondary contact T4 is open, although the primary contacts T2 and T3 are closed, the fourth relay 14 is not actuated and therefore does not generate a new pulse.

On the other hand, at t = 2d, when the secondary contacts T4 and T5 close again, while the third primary contact T3 is still closed, the fourth relay 14 is actuated which generates a second normalized pulse on the output contact 31. A t = 2d + the closing simultaneity time of the contacts 22 and 24, the third primary contact T3 reopens. At t = 3d, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which ends the second pulse generated at the output.

After a delay 4d, the second secondary contact T6 reopens and the secondary contacts T4 and T5 close to return to their initial position.

Thus, when two pulses overlap, the pulse summing device 1 outputs a first normalized pulse and then a second standard pulse remote from the first pulse of a delay d.

FIG. 11 illustrates the case in which the first input signal has a pulse at t = 0 and the second input signal a pulse at a time t = d, that is at the moment of the end of the normalized pulse of the first signal.

When the first signal has a pulse at t = 0 (of a duration = d), the first contact 22 of the counter 2 closes and actuates the first relay 11 which controls the immediate closure of the contacts T1 and T7.

The third secondary contact T4 being initially closed, the contacts T1 and T4 are simultaneously closed, the fourth relay 14 is actuated and generates a first standard pulse on the output contact 31.

When the second signal has a pulse (of a duration = d), at the expiration of the delay d, the second contact 24 of the counter 2 closes and actuates the second relay 12 which controls the immediate closure of the contacts T2 and T8.

Simultaneously, the tertiary contacts T7 and T8 being simultaneously closed, just before the opening of the contact 22, therefore of the first relay 11, therefore of the first tertiary contact T7, the third relay 13 controls the immediate closure of the third primary contact T3 which will reopen after a delay 2d.

Simultaneously, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which terminates the first pulse generated at the output.

The third secondary contact T4 being open, closing the third primary contact T3 does not actuate the fourth relay 14 which does not generate a new pulse.

On the other hand, at t = 2d, when the secondary contacts T4 and T5 close again, while the third primary contact T3 remains closed, the fourth relay 14 is actuated which generates a second output pulse. At t = 3d, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which ends the second pulse generated at the output.

Simultaneously, the contacts T3 and T6 reopen.

Thus, if the second signal has a pulse, at the end of the pulse of the first signal, the pulse summing device 1 outputs a first normalized pulse and a second normalized pulse distant from the first pulse of a delay. .

FIG. 12 illustrates the case in which the first input signal has a pulse at t = 0 and the second input signal a pulse at a time d> t> 2d, that is to say after the end of the normalized pulse of the first signal but before the lapse of the normalized duration between two pulses.

When the first signal has a pulse at t = 0 (of a duration d), the first contact 22 of the counter 2 closes and actuates the first relay 11 which controls the immediate closure of the contacts T1 and T7.

The third secondary contact T4 being initially closed, the contacts T1 and T4 are simultaneously closed, the fourth relay 14 is actuated and generates a first standard pulse on the output contact 31.

After the delay d, the contacts T7 and T1 open. Simultaneously, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which terminates the first pulse generated at the output.

When the second signal has a pulse at a time d> t> 2d (of a duration d), the second contact 24 of the counter 2 closes and actuates the second relay 12 which controls the immediate closure of the contacts T2 and T8.

The third secondary contact T4 being open, the fourth relay 14 is not actuated.

On the other hand, at t = 2d, when the third secondary contact T4 closes, while the second primary contact T2 remains closed, the fourth relay 14 is actuated which generates a second pulse. At t = 3d, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which ends the second pulse generated at the output.

Thus, when two pulses are separated by a time interval less than the delay d, the summation device 1 generates a first standardized pulse output and a second standard pulse remote from the first pulse of a delay d.

FIG. 13 illustrates the case in which the first input signal has a pulse at t = 0 and the second input signal a pulse at a time t> = 2d, that is to say after the flow of the normalized duration between two pulses.

When the first signal has a pulse at t = 0 (of a duration d), the first contact 22 of the counter 2 closes and actuates the first relay 11 which controls the immediate closure of the contacts T1 and T7.

The third secondary contact T4 being initially closed, the first primary contact T1 and the third secondary contact T4 are simultaneously closed, the fourth relay 14 is actuated and generates a first normalized pulse on the output contact 31.

After a delay d, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which terminates the first pulse generated at the output. At t = 2d, the second secondary contact T6 reopens.

When the second signal has a pulse (of a duration d), at time 2d, the second contact 24 of the counter 2 closes and actuates the second relay 12 which controls the immediate closure of the contacts T2 and T8.

Simultaneously, the secondary contacts T4 and T5 close again.

Contacts T2 and T4 being simultaneously closed, the fourth relay 14 is actuated and generates a second output pulse. At t = 3d, the secondary contacts T4 and T5 open. The fourth relay 14 is no longer actuated, the output contact 31 reopens, which ends the second pulse generated at the output. At t = 4d, the second secondary contact T6 reopens.

Thus, when two pulses are separated by a time interval greater than or equal to the delay d, the summation device 1 generates a first standardized pulse and a second standard pulse remote from the first pulse while respecting the time interval. between the two input pulses.

As illustrated in FIG. 8, the pulse summing device 1 implements a method of summing electrical pulses of a first and a second input signal, comprising steps of: immediate generation of a pulse of a predetermined duration D2, when one of the input signals has a pulse shifted from the last pulse generated by a delay greater than a predetermined delay D2-D1; - delayed generation of a pulse of predetermined duration D2, when one of the input signals has a pulse shifted from the last pulse generated by a delay less than the predetermined delay D2-D1, so that the new pulse generated in output is shifted from the last pulse generated at the output by a delay equal to the predetermined delay D2-D1.

The pulse generator 16 thus generates a pulse of fixed duration D1 for each pulse of one of the input signals, whatever the duration of the input pulse. If two pulses of the input signals overlap, one of them is delayed so that the pulses generated by the pulse generator do not overlap.

The pulse duration and the duration between the pulses can be adapted by adjusting the delays D1 and D2.

The second delay D2 makes it possible to set the duration of the pulse generated at the output, while the first delay D1 makes it possible to set the minimum duration between two output pulses, the minimum duration between two output pulses being equal to D1-D2.

In order for the output pulses not to overlap, the duration of the first delay D1 must be greater than or equal to that of the second delay D2.

In particular for the duration of the output pulse to be equal to the minimum duration between two output pulses, the duration of the first delay D1 must be twice that of the second delay D2.

However, the pulse frequency must be consistent with the pulse time for proper system operation. For example, an industrial meter of electrical energy can typically measure 6A at maximum, under 57.7V, the weight of the pulses being 0.025 varh per pulse.

In the worst case, when one has a capacitive phase and two inductive phases (or the opposite), there will be 6Ax 2 (phases) x 57.7 V = 0.1923 varh per second on one of the input contacts and, and 0.0962 varh on the other, which corresponds to 7.69 pulses per second on one of the input contacts, and 3.85 pulses per second on the other. Thus, in the worst case illustrated in FIG. 14, there will be one pulse every 130 ms on one input contact and one pulse every 260 ms on the other input contact. The device thus makes it possible to reproduce all the pulses generated by an industrial electrical energy meter by complying with the standard N F EN 62053-31 (09/1998). Therefore, the summation device described ensures that there can not be, with the current counters, pulse saturation output, with a pulse size of 30ms, and a time of 30ms between two pulses.

Claims (12)

A summation device for electric pulses (1) for adding the pulses of a first and a second input signal, comprising: - a first relay (11) controlled by the first input signal; a first primary contact (T1) of the closed contact type controlled by the first relay (11); a second relay (12) controlled by the second input signal; a second primary contact (T2) of the closed contact type controlled by the second relay (12); - an AND logic gate (15) having as inputs a first tertiary contact (T7) of the first relay (11) and a second tertiary contact (T8) of the second relay (12); a third relay (13) controlled by the AND logic gate (15); a third primary contact (T3), of the closed contact type, controlled by the third relay (13) with a first delay (D1) at the opening; an OR logic gate (19) having as inputs the three primary contacts (T1, T2, T3), the three primary contacts (T 1, T2, T3) being in parallel with each other, - a generator of pulses (16) comprising: - a fourth relay (14) in series with a first branch and a second branch in parallel with each other; the first branch (17) comprising, in series, a first secondary contact (T5), of the open contact type, controlled by the fourth relay (14) with a second delay (D2) upon closing and opening, a second secondary contact (T6) of the closed contact type controlled by the fourth relay (14) with a second delay D2 on opening; the second branch (18) comprising a third secondary contact (T4), of the open contact type, controlled by the fourth relay (14) with a second delay (D2) at closing and opening, the second branch ( 18) being in series with the OR logic gate (19); an output contact (31), of the closed contact type, controlled by the fourth relay (14); so that the pulse generator (16) generates, for each pulse of an input signal, a pulse of a predetermined duration, the pulses generated being separated from each other by a duration greater than or equal to a duration predetermined. 2. summator device of electrical pulses (1), according to the preceding claim, wherein the duration of the first delay (D1) is greater than or equal to that of the second delay (D2). 3. Summing device of electrical pulses (1), according to the preceding claim, wherein the duration of the first delay (D1) is twice that of the second delay (D2). 4. Summing device of electrical pulses (1) according to one of the preceding claims, wherein the first primary contact (T1) and the second primary contact (T2) are immediate closing and opening contacts. 5. summator device electrical pulses (1) according to one of the preceding claims, wherein the second secondary contact (T6) is an immediate closing contact. 6. summator device electrical pulses (1), according to one of the preceding claims, wherein the AND logic gate (15) consists of two tertiary contacts (T7, T8), type closure contact, respectively controlled by the first relay (11) and the second relay (12). 7. summator device electrical pulses (1) according to the preceding claim, wherein the two tertiary contacts (T7, T8) are in series with respect to each other. 8. Summing device of electrical pulses (1) according to one of the preceding claims, wherein the relays (11, 12, 13, 14) have a monostable operation. 9. Summing device of electrical pulses (1) according to one of the preceding claims, wherein the relays (11, 12, 13, 14) are electromechanical relays. 10. Summing device of electrical pulses (1), according to the preceding claim, wherein each relay (11, 12, 13, 14) comprises an electromagnet, which when supplied, transmits a force to the contacts controlled by said relay (11, 12, 13, 14). 11. summator device electrical pulses (1) according to one of claims 1 to 8, wherein the relays (11, 12, 13, 14) are electronic relays. 12. A method for summing electrical pulses of a first and a second input signal comprising steps of: immediate generation of a pulse of a predetermined duration (D2), when one of the signals of input has a pulse shifted from the last generated pulse by a delay greater than a predetermined delay (D2-D1); - delayed generation of a pulse of predetermined duration (D2), when one of the input signals has a pulse shifted from the last pulse generated by a delay less than the predetermined delay (D2-D1) so that the new pulse generated at the output is shifted from the last pulse generated at the output of a delay equal to the predetermined delay (D2-D1).