EP4678503A1

EP4678503A1 - Detecting the position of a switch blade frame of a turnout

Info

Publication number: EP4678503A1
Application number: EP25188352.6A
Authority: EP
Inventors: Francesco Mazzilli
Original assignee: Galattica Srl
Current assignee: Galattica Srl
Priority date: 2024-07-10
Filing date: 2025-07-09
Publication date: 2026-01-14

Abstract

The present invention relates to a detecting system for detecting the position of a switch blade frame (10) of a turnout.

The detecting system comprises a first acquiring device (AD1) to be positioned in a switch machine (MC) to move said switch blade frame (10) between a first position and a second position, and a second acquiring device (AD2) to be positioned in a control plant (CS) to control the movement of the switch blade frame (10) spaced from said switch machine (MC).

The first acquiring device (AD1) is configured to acquire at least one first voltage polarity associated with a control voltage identifying the position of said switch blade frame (10) and send said first voltage polarity to the second acquiring device (AD2).

The second acquiring device (AD2) is configured to receive said first voltage polarity, acquire a further first voltage polarity associated with said control voltage and compare said first voltage polarity with the further voltage polarity.

Description

The present invention relates to a detecting system for detecting the position of a switch blade frame of a turnout.
In particular, the invention relates to the structure of a detecting system comprising a first acquiring device to be positioned in use inside a switch machine configured to move said switch blade frame between a first position and a second position, and a second acquiring device to be positioned in use in a control plant which is located distant from the switch machine and is configured to control the movement of the switch blade frame, through the switch machine.
Said second acquiring device can be positioned inside an electric cabinet of said control plant.
The first acquiring device is configured to acquire at least one a first polarity voltage, which is associated with a control tension identifying the position of said switch blade frame.
The second acquiring device is configured to acquire at least one further voltage polarity associated with said control tension.
In particular, the first acquiring device is configured to communicate the first voltage polarity to the second acquiring device and the latter is configured to compare said first voltage polarity (send from said first acquiring device) with said at least one further first voltage polarity (acquiring by the second acquiring device itself) in order to verify if the position of the switch blade frame which is identified through the first voltage polarity acquired in the switch machine corresponds to the position of the switch blade frame which is identified through the further first voltage polarity acquired by the control plant.
In other words, the detecting system allows to verify if a first voltage polarity associated with the control tension which is acquired by the first acquiring device in the switch machine is equal to or different from a further first voltage polarity associated with the same control tension which is acquired by the second acquiring device in the control plant.
In the present description, the expression "movement of the switch blade frame" will refer to the "movement of the turnout".
In particular, where expressions such as "movement of the switch blade frame", "move the switch blade frame", "movement of the turnout", "move the turnout" are used in this description, these expressions are used interchangeably.
Accordingly, in this description, the expression "position of the switch blade frame" will be used to refer to the "position of the turnout".

Prior art

The turnout is a railway device which connects two tracks and allows a railway vehicle to pass from a track, from which said railway vehicle comes, to a further track (different from said track), so that the travel of said railway vehicle is diverted from said track to said further track.
In particular, the turnout comprises a switch blade frame and the switch blade frame comprises two switch blades: a first switch blade and a second switch blade
The switch blade frame is movable between two positions: a first switch, in which said first switch blade contacts a rail to allow the wheels of a railway vehicle to follow a "correct track", and a second position, in which said second switch blade contacts a further rail to allow the wheels of a railway vehicle to move onto a "deviated track".
A switch machine is configured to move said switch blade frame between said two positions.
In the railway sector, the original route is called the "corrected route", while the branch that branches off from the original route is called the "deviated branch" or "deviated track.".
The turnout comprises blocking means for blocking said switching blade frame in said first position or in said second position, based on the position reached by said switch blade frame.
In general, the movement of the switch blade frame is divided into three phases: a first phase associated with the unblocking of said switch blade frame from said first position/second position (based on the initial position of the switch blade frame), a second phase associated with the movement from said first/second position to said second/first position, and a third phase associated with the blocking of said switch blade frame in said second/first position.
Currently, to verify whether the position of a switch blade frame on the ground corresponds to the position of the switch blade frame identified by a control system, an operator in the vicinity of the switch machine contacts an operator in said control plant or goes directly to the control plant.
In the event of faults or damage to the switch machine, in a first alternative, it is possible that the electrical cables connecting the control plant to the switch machine may need to be replaced.
In a second alternative it is possible that the switch machine needs to be replaced.
In both alternatives, the electrical cables connecting the control plant to the switch machine must be disconnected from the switch machine and reconnected to the switch machine.
In case of replacement of electrical cables, said electrical cables are replaced with further electrical cables and further electrical cables are manually connected by an operator to the switch machine.
In case of replacement of a switch machine, said switch machine is replaced by a further switch machine, the electrical cables (which connect it to the control plant) are manually connected by an operator to said further switch machine.
To verify whether the position of the switch blade frame identified by the control plant corresponds to the position of the switch blade frame on the ground, after replacing the electrical cables or the switch machine, the switch blade frame is moved to a final position different from the initial position.
Accordingly, if the switch blade frame is in a first position it is moved to the second position or if it is in a second position it is moved to the first position.
The movement of the switch blade frame can be due to a manual operation by an operator or can be controlled by the control plant.
Once the switch blade frame has been moved to the first or second position, the operator contacts the control plant or goes to the control plant to check whether the position of the switch blade frame identified by the said control plant corresponds to the position of the switch blade frame on the ground (i.e. the position of the switch blade frame that is derived from the manual movement of the operator or from the movement controlled by the control plant).
Sometimes the position of the switch blade frame identified by the control plant does not correspond to the actual position of the switch blade frame on the ground.
This can be due to various factors, such as incorrect wiring performed by the operator or a malfunction of the switch machine or a malfunction of the control plant.
A disadvantage is that if the operator is on site (i.e. near the switch machine), he must disconnect the electrical cables from the switch machine, reconnect the electrical cables to the switch machine, move the switch blade frame and perform a new check, with the risk of incorrectly connecting the electrical cables to the switch machine and the resulting loss of time.
A further disadvantage is that if the operator has gone to the control plant and is therefore not near the switch machine, the operator must return to the site where the switch machine is located to disconnect the electrical cables from the switch machine, reconnect the electrical cables to the switch machine, move the switch blade frame and perform a new check, with the risk of incorrectly connecting the electrical cables to the switch machine and the resulting loss of time.

Aim of the invention

Aim of the present invention is to overcome the disadvantages mentioned above, providing a detecting system for automatically detecting the position of the switch blade frame of a turnout.
A further aim of the present invention is to provide a detecting system for detecting the position of the switch blade frame of a turnout with high accuracy.
In particular, the detecting system is configured to detect the position of the switch blade frame by a comparison between at least one first voltage polarity acquired by a first acquiring device in a switch machine (which is placed on the ground in proximity of the switch blade frame) and at least one further first voltage polarity acquired by a second acquiring device in a control plant (which is located distant from said switch machine).
A further aim of the present invention is to generate at least one first alarm signal when the first voltage polarity acquired by the first acquiring device in the switch machine is different from the further first voltage polarity acquired by the second acquiring device in the control plant, since the position of the switch blade frame identified through the first voltage polarity acquired by the first acquiring device is not equal to the position of the switch blade frame identified through the further first voltage polarity acquired by the second acquiring device.

Object of the invention

It is therefore specific object of the present invention a detecting system as defined in claim 1.
Preferred embodiments of the detecting system are defined in the dependent claims.

Figure list

The present invention will be now described, for illustrative, but not limitative purposes, according to its preferred embodiments, making particular reference to the enclosed figures, wherein:

Figure 1 is a schematic view showing a switch blade frame of a turnout, a switch machine for moving the switch blade frame and a control plant, distant from the switch machine, for controlling the movement of the switch blade frame;
Figure 2 is a schematic view showing the detecting system for detecting the position of the switch blade frame according to the invention, wherein said detecting system comprises a first acquiring device to be positioned inside the switch machine and a second acquiring device to be positioned in a control plant, wherein said first acquiring device is configured to acquire at least one first voltage polarity associated with a control tension identifying the position of the switch blade frame and to send said first voltage polarity to the second acquiring device, and the second acquiring device is configured to acquire at least one further first voltage polarity associated with said control tension and to compare the first voltage polarity with the further first polarity voltage in order to verify if the position of the switch blade frame which is identified through the first voltage polarity acquired in the switch machine corresponds to the position of the switch blade frame which is identified through the further first voltage polarity acquired in the control plant;
Figure 3 is a schematic view of the first acquiring device of the detecting system object of the invention;
Figure 4 is a schematic view of the second acquiring device of the detecting system object of the invention.

Detailed description of the invention

With reference to figures, a detecting system for detecting the position of a switch blade frame 10 of a turnout is disclosed.
Said switch blade frame 10 is provided with a first switch blade 11 and a second switch blade frame 12.
Said switch blade frame 10 is movable between a first position, wherein said first switch blade 11 contacts a first rail to allow the wheels of a railway vehicle to follow a first track or "correct track", and a second position, wherein said second switch blade 12 contacts a second rail to allow the wheels of said railway vehicle to move onto a second track or "deviated track".
To move said switch blade frame 10, a switch machine MC is arranged in proximity of the switch blade frame itself.
The switch machine is configured to move said switch blade frame 10 between said first position and said second position.
In particular, said MC control box is configured to move said switch blade frame 10 by means of two switch rods: a first switch rod MR1 connected to the first switch blade 11 and a second switch rod MR2 connected to the second switch blade 12.
A motor, preferably an electric motor, is arranged in the switch machine MC and transmits the movement to said control rods MR1, MR2 and said control rods MR1, MR2 transmit the movement to the switch blades 11, 12 of the switch blade frame 10.
In other words, the control rods MR1, MR2 receive the movement from said motor and transmit the movement to the switch blades 11, 12 of the switch blade frame 10.
The switch machine MC also comprises two electrical switching units: a first electrical switching unit and a second electrical switching unit.
Each electrical switching unit is configured to close respectively a first plurality of electrical contacts (being part of said first electrical switching unit) and a second plurality of electrical contacts (being part of said second electrical switching unit) when the switch blade frame 10 reaches its final position.
The final position of the switch blade frame 10 can be the first position or the second position, depending on the initial position of the switch blade frame itself.
The first plurality of electrical contacts closed by the first electrical switching unit and the second plurality of electrical contacts closed by the second electrical switching unit are indicative of the fact that the movement of the switch blade frame has been performed regularly.
The first electrical switching unit is connected to the first switch blade 11 of the switch blade frame 10 through a first control rod CR1 and the second electrical switching unit is connected to the second switch blade 12 of the switching blade frame 10 through a second control rod CR2.
Said first control rod CR1 and said second control rod CR2 receive movement from the switch blades 11, 12 of the switch blade frame 10, and said first electrical switching unit and said second electrical switching unit provide a confirmation (on the basis of the plurality of electrical contacts which is closed by the respective electrical switching unit) that the movement of the control rods MR1, MR2 has been performed regularly.
If the movement of the control rods MR1, MR2 has been completed regularly, it means that the movement of the switch blade frame 10 has been completed regularly.
Said detecting system comprises:

a first acquiring device AD1 to be positioned in the switch machine MC configured to move said switch blade frame 10 between said first position and said second position;
a second acquiring device AD2 to be positioned in a control plant CS to control the movement of said switch blade frame 10 through said switch machine MC.

In the example that is described, the second acquiring device AD2 is positioned in an electrical cabinet EC of the control plant CS.
The control plant CS is distant from the switch machine MC.
In particular, the control plant CS can be several kilometers away from the control plant MC.
In fact, the control plant CS can be located inside a railway station.
With reference to the fist acquiring device AD1, said first acquiring device AD1 comprises:

▪ at least a first acquiring module AM11 for acquiring a first voltage polarity associated with a control voltage identifying the position of said switch blade frame 10, and
▪ a first control unit CU1 configured to:
- o acquire said first voltage polarity from said first acquiring module AM11, and
- o send said first voltage polarity to said second acquiring device AD2.

With reference to the second acquiring device AD2, the second acquiring device AD2 comprises:

▪ at least one further first acquiring module AM21 for acquiring a further first voltage polarity associated with said control voltage; and
▪ a second control unit CU2 configured to:
- o receive said first voltage polarity (sent from the first acquiring device AD1),
- o acquire said further first voltage polarity from said further first acquiring module AM21,
- o compare said first voltage polarity with said further first voltage polarity,
- o if said first voltage polarity is different from said further first voltage polarity, generate a first alarm signal to indicate that the position of said switch blade frame 10 is incorrect.

In other words, if the first voltage polarity is different from said further first voltage polarity means that the position of the switch blade from 10 identified through the first voltage polarity acquired by the first acquiring device AD1 present in the switch machine MC does not corresponds to the position of the switching blade frame 10 identified through the further first voltage polarity acquired by the second acquiring device AD2 present in the control plant CS.
On the other hand, if the first voltage polarity acquired by the first acquiring device AD1 in the switch machine MC is equal to the further first voltage polarity acquired by the second acquiring device AD2 in the control plant CS (distant from the switch machine), the position of the switch blade frame 10 on the ground identified through the first voltage polarity acquired by the first acquiring device AD1 corresponds to the position of the switch blade frame 10 identified in the control plant CS through the further first voltage polarity acquired by the second acquiring device AD2, otherwise a first alarm signal is generated.
The first acquiring device AD1 comprises a first CC-CC converter indicated with the reference PM1 configured to receive a direct supply voltage from said control plant CS to power said first acquiring device AD1, and to convert said direct supply voltage into a first direct supply voltage.
In other words, said first acquiring module AM11 and said first control unit CU1 are powered by the first direct supply voltage, i.e. by the direct supply voltage output from the first DC-DC converter PM1.
The second acquiring device AD2 comprises a second CC-CC converter indicated with the reference PM2 configured to receive a direct supply voltage from said control plant CS to power said further first acquiring module AM21 and said second control unit CU2, and to convert said direct supply voltage into a second direct supply voltage.
In other words, said further first acquiring module AM21 and said second control unit U2 are powered by the second direct voltage supply, i.e. by the direct supply voltage output from the second CC-CC converter PM2.
In the example that is described, the direct supply voltage is equal to 48V.
This first direct supply voltage is equal to 5V.
Furthermore, in the example that is described, the second direct supply voltage is equal to the first direct supply voltage and therefore is equal to 5V.
However, the first direct supply voltage does not need to be equal to the second direct supply voltage.
It is preferable that the detecting system object of the invention performs a further comparison between a second voltage polarity (different from the first voltage polarity) acquired by the first acquiring device AD1 with a further second voltage polarity (different from the further first voltage polarity) acquired by the second acquiring device AD2.
To perform a further comparison, the first acquiring device AD1 can comprise a second acquiring module AM12 for acquiring a second voltage polarity associated with said direct supply voltage and the first control unit CU1 of said first acquiring device AD1 can be configured to:

o acquire said second voltage polarity from said second acquiring module AM12, and
o send said second voltage polarity to said second acquiring device AD2.

The second acquiring module AM12 is powered by the first direct supply voltage, i.e. by the direct supply voltage output from the first CC-CC converter PM1.
The second acquiring device AD2 can comprise a further second acquiring module AM22 for acquiring a further second voltage polarity associated with said direct supply voltage, and said second control unit CU2 can be configured to:

o receive said second voltage polarity (sent from the first acquiring device AD1),
o acquire said further second voltage polarity from said further second acquiring module AM22,
o compare said second voltage polarity with said further second voltage polarity,
o if said second voltage polarity is different from said further second voltage polarity, generate a second alarm signal to indicate a wiring error.

In other words, if the second voltage polarity is different from said further second voltage polarity, it means that an error was made in connecting one or more electrical cables to the switch machine MC and/or the control plant CS.
In fact, incorrect wiring can be caused by an operator when connecting the electrical cables to the switch machine MC and/or the control plant CS.
On the other hand, if the second voltage polarity acquired by the first acquiring device AD1 in the switch machine MC is equal to said further second voltage polarity acquired by the control plant CS (distant from the switch machine MC), it means that there is no wiring error.
The absence of a wiring error guarantees the correct functioning of the detecting system (i.e. of the first acquiring device AD1 and the second acquiring device AD2), as well as compliance with the electrical conformity of the detection system with respect to an electrical circuit connecting the switch machine MC and the control plant CS.
The further second acquiring module AM22 is powered by the second direct supply voltage, i.e. by the direct supply voltage output from the second CC-CC converter PM2.
The switch machine MC comprises a plurality of electrical clamps.
With reference to the first voltage polarity associated with to said control voltage, said first voltage polarity is acquired by said first acquiring module AM11 between a first electrical clamp 1 and a second electrical clamp 2 of said plurality of electrical clamps.
With reference to the second voltage polarity associated with said direct supply voltage, said second voltage polarity is acquired between a third electrical clamp 3 and a fourth electrical clamp 4 of said plurality of electrical clamps.
The control plant CS comprises a plurality of further electrical clamps.
With reference to the further first voltage polarity associates with said control voltage, said further first voltage polarity is acquired by said further first acquiring module AM21 between a further first electrical clamp 1' and a further second electrical clamp 2' of said further plurality of electrical clamps.
With reference to the further second voltage polarity associated with said direct supply voltage, said further second voltage polarity is acquired between a further third electrical clamp 3' and a further fourth electrical clamp 4' of said plurality of further electrical clamps.
In particular, each of said electrical clamps of the plurality of electrical clamps included in the switch machine MC is connected to a respective further electrical clamp of the plurality of the further electrical clamps included in the control plant CS.
The detecting system comprises a first electrical cable C1 for connecting the first electrical clamp 1 and the further first electrical clamp 1' and a second electrical cable C2 for connecting the second electrical clamp 2 and the further second electrical clamp 2'.
It is preferable that the detecting system comprises a third electrical cable C3 for connecting the third electrical clamp 3 and the further electrical clamp 3' and a fourth electrical cable C4 for connecting the fourth electrical clamp 4 and the further fourth electrical clamp 4'.
In other words, the detecting system object of the invention verifies if the first voltage polarity associated with the control voltage present between the first electrical clamp 1 and the second electrical clamp 2 arranged in the switch machine MC is equal to the further first voltage polarity associated with the same control voltage present between said further first electrical clamp 1' (connected to said first electrical clamp 1' through the first electrical cable C1) and said further second electrical clamp 4' (connected to said second electrical clamp 2 through the second electrical cable C2) arranged in the control plant CS.
Furthermore, it is preferable that the detecting system object of the invention verifies if the second voltage polarity associated with the direct supply voltage present between the third electrical clamp 3 and the fourth electrical clamp 4 arranged in the switch machine MC is equal to the further second voltage polarity associated with the same direct supply voltage present between said further third electrical clamp 3' (connected to said third electrical clamp 3 through the third electrical cable C3) and said further fourth electrical clamp 4' (connected to said fourth electrical clamp 4 through the fourth electrical cable C4) arranged in the control plant CS.
The communication between the first acquiring device AD1 and said second acquiring device AD2 is a power line communication.
In particular, said first voltage polarity is sent from said first acquiring device AD1 to said second acquiring device AD2 through said first electronical cable C1 and said second electrical cable C2.
The first control unit CU1 of the first acquiring device AD1 can comprise a first controller CT1 and a power line modulator MD.
The first controller CT1 is configured to send to said power line modulator MD a signal containing said first voltage polarity (when only the first voltage polarity is acquired by the first acquiring device AD1) or a signal containing said first voltage polarity and said second voltage polarity (when the first voltage polarity and the second voltage polarity are acquired by the first acquiring device AD1).
The power line modulator MD is connected to said first controller CT1, as well as to said first electrical clamp 1 and to said second electrical clamp 2 of said plurality of electrical clamps, and is configured to receive said signal and to frequency modulate said signal, so as to obtain a frequency modulated signal, and to send said frequency modulated signal on said first electrical cable C1 and on said second electrical cable C2.
The frequency modulation performed by the said power line modulator MD is an FSK (Frequency Shift Keying) modulation.
The second control unit CU2 of the second acquiring device AD2 can comprise a power line demodulator DM and a second controller CT2.
The power line demodulator DM is connected to said second controller CT2, as well as to said further first electrical clamp 1' and to said further second electrical clamp 2' of said plurality of further electrical clamps, and is configured to receive said frequency modulated signal sent from the first acquiring device AD1, demodulate said frequency modulated signal so as to obtain a demodulated signal, and send said demodulated signal to said second controller CTU
Said second controller CT2 is configured to receive said demodulated signal and to obtain said first voltage polarity or the first voltage polarity and the second voltage polarity, based on the information contained in the demodulated signal.
As said, the frequency modulated signal can contain only said first voltage polarity, when only the first voltage polarity is acquired by the first acquiring device AD1, or can contain said first voltage polarity and said second voltage polarity, when the first voltage polarity and the second voltage polarity are acquired by the first acquiring device AD1.
Consequently, the demodulated signal can contain said first voltage polarity or can contain said first voltage polarity and said second voltage polarity, based on the information contained in the frequency modulated signal.
Advantageously, the detecting system can comprise a displaying device DD for displaying data
It is preferable that said displaying device DD is included in the second acquiring device AD2.
Said displaying device DD is connected to said second controller CT2 of said second control unit CU2.
In a first alternative, the second controller CT2 of said second control unit CU2 can be configured to send to said displaying device DD said first voltage polarity and said further first voltage polarity when (only) the first voltage polarity is acquired by the first acquiring device AD1 and (only) the further first voltage polarity is acquired by the second acquiring device AD2.
In said first alternative, said displaying device DD can be configured to display said first voltage polarity and said further first voltage polarity.
In a second alternative, the second controller CT2 of said second control unit CU2 can be configured to send to said displaying device DD said first voltage polarity and said second voltage polarity, when said first voltage polarity and said second voltage polarity are acquired by the first acquiring device AD1, as well as said further first voltage polarity and said further second voltage polarity, when said further first voltage polarity and said further second voltage polarity are acquired by the second acquiring device AD2.
In said second alternative, said displaying device DD can be configured to display said first voltage polarity and said second voltage polarity, said further first voltage polarity and said further second voltage polarity.
Furthermore, said displaying device DD can be connected to said second CC-CC converter PM2, so that the second direct supply voltage (i.e. the supply voltage output from the second converter PM2) powers said displaying device DD.
The detecting system can comprise alarm means (not shown) and said second control unit CU2 can be connected to said alarm means and configured to send an alarm means to said alarm means and activate said alarm means.
In particular, in a first alternative, when only the first voltage polarity is acquired by the first acquiring device AD1 and only the further first voltage polarity is acquired by the second acquiring device AD2, said second control unit CU2 can be configured to:

o send first alarm signal to said alarm means and activate said alarm means when said first voltage polarity is different from said further first voltage polarity.

In a second alternative, when the first voltage polarity an the second voltage polarity are acquired by the first acquiring device AD1, and the further first voltage polarity and the further second voltage polarity are acquired by the second acquiring device AD2, said second control unit CU2 can be configured to:

o send said first alarm signal to said alarm means and activate said alarm means when said first voltage polarity is different from said further first voltage polarity, and
o send said second alarm signal to said alarm means and activate said alarm means when said second voltage polarity is different from said further second voltage polarity.

The detecting system object of the present invention can comprise said switch machine MC and said control plant CS.

Advantages

A first advantage of the system object of the invention is given by the possibility of automatically detecting the position of a switch blade frame.
A further advantage is given by the possibility of generating at least one first alarm signal when a first voltage polarity acquired by the first acquiring device AD1 in the switch machine MC does not correspond to a further first voltage polarity acquired by the second acquiring device AD2 in the control plant CS, i.e. when the position of the switch blade frame 10 identified by said first voltage polarity does not correspond to the position of the switch blade frame 10 identified by said further first voltage polarity.
The present invention has been described for illustrative, but not limitative purposes, according to its preferred embodiments, but it is to be understood that variations and/or modifications can be carried out by a skilled in the art, without departing from the scope thereof, as defined according to enclosed claims.

Claims

Detecting system for detecting the position of a switch blade frame (10) of a turnout, wherein said switch blade frame (10) is of the type comprising a first switch blade (11) and a second switch blade (12) and is movable between a first position, in which said first switch blade (11) contacts a first railway track to allow a railway vehicle too follow a first path, and a second position, in which said second switch blade (12) contacts a second railway track to allow said railway vehicle to follow a second path, said detecting system comprising:
- a first acquiring device (AD1) to be positioned in a switch machine (MC) configured to move said switch blade frame (10) between said first position and said second position;

- a second acquiring device (AD2) to be positioned in a control plant (CS) to control the movement of said switch blade frame (10) through said switch machine (MC), said control plant (CS) being spaced from said switch machine (MC),
wherein
said first acquiring device (AD1) comprises:
at least a first acquiring module (AM11) for acquiring a first voltage polarity associated with a control voltage identifying the position of said switch blade frame (10); and

a first control unit (CU1) configured to:
o acquire said first voltage polarity from said first acquiring module (AM11),

o send said first voltage polarity to said second acquiring device (AD2),

said second acquiring device (AD2) comprises:
at least one further first acquiring module (AM21) for acquiring a further first voltage polarity associated with said control voltage; and

a second control unit (CU2) configured to:
o receive said first voltage polarity,

o acquire said further first voltage polarity from said further first acquiring module (AM21),

o compare said first voltage polarity with said further first voltage polarity,

o if said first voltage polarity is different from said further first voltage polarity, generate a first alarm signal to indicate that the position of said switch blade frame (10) is incorrect.
Detecting system according to claim 1, wherein
said first acquiring device (AD1) comprises:
a first DC-DC converter (PM1) configured to receive a direct supply voltage transferred from said control plant (CS) to said first acquiring device (AD1) in order to power said first acquiring device (AD1), and to convert said direct supply voltage in a first direct supply voltage, and

a second acquiring module (AM12) for acquiring a second voltage polarity associated with said direct supply voltage,

wherein

said first control unit (CU1) of said first acquiring device (AD1) is configured to:
o acquire said second voltage polarity from said second acquiring module (AM12), and

o send said second voltage polarity to said second acquiring device (AD2),

wherein

said second acquiring device (AD2) comprises:
a second DC-DC converter CC-CC (PM2) configured to receive a direct supply voltage transferred from said control plant (CS) to said second acquiring device (AD2) in order to power said second acquiring device (AD2), and to convert said direct supply voltage in a second direct supply voltage, and

a further second acquiring module (AM22) for acquiring a further second voltage polarity associated with said direct supply voltage,

wherein

said second control unit (CU2) is configured to:
o receive said second voltage polarity,

o acquire said further second voltage polarity from said further second acquiring module (AM22),

o compare said second voltage polarity with said further second voltage polarity,

o if said second voltage polarity is different from said further second voltage polarity, generate a second alarm signal to indicate a wiring error.
Detecting system according to claim 1, wherein
said first voltage polarity associated with said control voltage is acquired by said first acquiring module (AM11) between a first electrical clamp (1) and a second electrical clamp (2) of a plurality of electrical clamps of said switch machine (MC), and

said further first voltage polarity associated with said control voltage is acquired by said further first acquiring module (AM21) between a further first electrical clamp (1') and a further second electrical clamp (2') of a plurality of further electrical clamps of said control plant (CS),

wherein

said detecting system comprises:
a first electrical cable (C1) for connecting said first electrical clamp (1) of said plurality of electrical clamps and said further first electrical clamp (1') of said plurality of further electrical clamps, and

a second electrical cable (C2) for connecting said second electrical clamp (2) of said plurality of electrical clamps and said further second electrical clamp (2') of said plurality of said further electrical clamps.
Detecting system according to claim 2, wherein
said first voltage polarity associated with said control voltage is acquired by said first acquiring module (AM11) between a first electrical clamp (1) and a second electrical clamp (2) of a plurality of electrical clamps of said switch machine (MC), and said second voltage polarity associated with said direct supply voltage is acquired by said first acquiring module (AM11) between a third electrical clamp (3) and a fourth electrical clamp (4) of said plurality of electrical clamps of said switch machine (MC), and

said further first voltage polarity associated with said control voltage is acquired by said further first acquiring module (AM21) between a further first electrical clamp (1') and a further second electrical clamp (2') of a plurality of further electrical clamps of said control plant (CS), and said further second voltage polarity associated with said direct supply voltage is acquired between a further third electrical clamp (3') and a further fourth electrical clamp (4') of said plurality of further electrical clamps,

wherein

said detecting system comprises:
a first electrical cable (C1) for connecting said first electrical clamp (1) of said plurality of electrical clamps and said further first electrical clamp (1') of said plurality of further electrical clamps,

a second electrical cable (C2) for connecting said second electrical clamp (2) of said plurality of electrical clamps and said further second electrical clamp (2') of said plurality of said further electrical clamps,

a third electrical cable (C3) for connecting said third electrical clamp (3) of said plurality of electrical clamps and said further third electrical clamp (3') of said plurality of further electrical clamps, and

a fourth electrical cable (C4) for connecting said fourth electrical clamp (4) of said plurality of electrical clamps and said further fourth electrical clamp (4') of said plurality of further electrical clamp.
Detecting system according to claim 3, wherein
said first control unit (CU1) comprises a first controller (CT1) and a power line modulator (MD), wherein said first controller (CT1) is configured to send a signal containing said first voltage polarity to said power line modulator (M), and said power line modulator (M) is connected to said first controller (CT1), as well as to said first electrical clamp (1) and to said second electrical clamp (2) of said plurality of electrical clamps, and is configured to receive said signal and to frequency modulate said signal, so as to obtain a frequency modulated signal, and to send said frequency modulated signal on said first electrical cable (C1) and on said second electrical cable (C2), and

wherein

said second control unit (CU2) comprises a second controller (CT2) and a power line demodulator (DM), wherein said power line demodulator (DM) is connected to said second controller (CT2), as well as to said further first electrical clamp (1') and to said further second electrical clamp (2') of said plurality of further electrical clamps, and is configured to receive said frequency modulated signal, demodulate said frequency modulated signal so as to obtain a demodulated signal, and send said demodulated signal to said second controller (CT2), and wherein said second controller (CT2) is configured to receive said demodulated signal and to obtain said first voltage polarity.
Detecting system according to claim 4, wherein
said first control unit (CU1) comprises a first controller (CT1) and a power line modulator (M), wherein said first controller (CT1) is configured to send a signal containing said first voltage polarity and said second voltage polarity to said power line modulator (M), and said power line modulator (M) is connected to said first controller (CT1), as well as to said first electrical clamp (1) and to said second electrical clamp (2) of said plurality of electrical clamps, and is configured to receive said signal and frequency modulate said signal, so as to obtain a frequency modulated signal, and to obtain said frequency modulated signal on said first electrical cable (C1) and on said second electrical cable (C2), and

wherein

said second control unit (UC2) comprises a second controller (CT2) and a power line demodulator (DM), wherein said power line demodulator (DM) is connected to said second controller (CT2), as well as to said further first electrical clamp (1') and to said further second electrical clamp (2') of said plurality of further electrical clamps, and is configured to receive said frequency modulated signal, demodulate said frequency modulated signal so as to obtain a demodulated signal, and to send said frequency modulated signal to said second controller (CT2), and wherein said second controller (CT2) is configured to receive said demodulated signal and to obtain said first voltage polarity and said second voltage polarity.
Detecting system according to claims 5 or 6, wherein the frequency modulation performed by said power line modulator (M) is an FSK modulation.
Detecting system according to any one of claims 2-7, wherein said direct supply voltage is equal to 48V.
Detecting system according to claim 1, wherein
said detecting system comprises a displaying device (DD) for displaying data; said displaying device (DD) being preferably included in said second acquiring device (AD2), and

wherein

said second control unit (CU2) is configured to send to said displaying device (DD) said first voltage polarity and said further first voltage polarity.
Detecting system according to claim 2, wherein
said detecting system comprises a displaying device (DD) for displaying data; said displaying device (DD) being preferably included in said second acquiring device (AD2), and

wherein

said second control unit (CU2) is configured to send to said displaying device (DD) said first voltage polarity, said further first voltage polarity, as well as said second voltage polarity and said further second voltage polarity.
Detecting system according to claim 1, wherein said detecting system comprises alarm means and said second control unit (UC2) is connected to said alarm means and configured to:
o send first alarm signal to said alarm means and activate said alarm means when said first voltage polarity is different from said further first voltage polarity.
Detecting system according to claim 2, wherein said detecting system comprises alarm means and said second control unit (UC2) is connected to said alarm means and configured to:
o send said first alarm signal to said alarm means and activate said alarm means when said first voltage polarity is different from said further first voltage polarity, and

o send said second alarm signal to said alarm means and activate said alarm means when said second voltage polarity is different from said further second voltage polarity.