阅读说明：本技术 道岔控制电路及道岔控制系统 (Turnout control circuit and turnout control system ) 是由 王有康 于 2019-11-29 设计创作，主要内容包括：本发明提供一种道岔控制电路及道岔控制系统,该道岔控制电路包括：转辙电路,用于控制转辙电机完成道岔定位去反位或反位去定位操作；锁闭电路,用于控制锁闭电机完成道岔解锁或锁闭；表示电路,用于产生表示道岔位置的信号；以及自动开闭器,包括多排接点,每排接点分别设置在所述转辙电路、锁闭电路和表示电路其中之一中,所述自动开闭器与道岔连接,并且响应于道岔转辙位置和/或锁闭状态控制各排接点的导通,从而使转辙电路、锁闭电路和表示电路连通或断开。该道岔控制电路及道岔控制系统减少各模块电路的交互节点,使控制逻辑更清晰简单,并且使用自动开闭器代替行程开关,相对每个位置安装行程开关降低了成本。(The invention provides a switch control circuit and a switch control system, wherein the switch control circuit comprises: the switch circuit is used for controlling the switch motor to complete turnout positioning and reversing or reversing and positioning operation; the locking circuit is used for controlling the locking motor to unlock or lock the turnout; a representation circuit for generating a signal representing the position of the switch; and an automatic switch including a plurality of rows of contacts each disposed in one of the switch circuit, the locking circuit and the indication circuit, the automatic switch being connected to the switch and controlling the conduction of the rows of contacts in response to a switch position and/or a locking state of the switch to connect or disconnect the switch circuit, the locking circuit and the indication circuit. The turnout control circuit and the turnout control system reduce the interactive nodes of each module circuit, make the control logic clearer and simpler, and use the automatic shutter to replace the travel switch, so that the cost is reduced by installing the travel switch at each position.)

1. A switch control circuit, comprising:

the switch circuit is used for controlling a switch motor to complete turnout positioning and reversing or reversing and positioning operations;

the locking circuit is used for controlling the locking motor to unlock or lock the turnout;

a representation circuit for generating a signal representative of a switch position; and

and an automatic switch including a plurality of rows of contacts, each row of contacts being disposed in one of the switch circuit, the locking circuit and the indication circuit, the automatic switch being connected to the switch and controlling the conduction of the rows of contacts in response to a switch position and/or a locking state of the switch to connect or disconnect the switch circuit, the locking circuit and the indication circuit.

2. The switch control circuit as claimed in claim 1, further comprising:

at least one switch, each of which is provided in one of a switch circuit locking circuit and a presentation circuit, and two contacts of which are connected by a set of contacts of the automatic switch, so that the switch is turned on in response to conduction of the set of contacts of the automatic switch.

3. The switch control circuit as claimed in claim 2, wherein said automatic shutter comprises first through eighth rows of contacts, each row of contacts comprising sets 1 and 2 of contacts, each set of contacts comprising two contacts, at least one switch comprising first through third switches, each said switch comprising two contacts, wherein,

the 1 st group of connection points of the first row of connection points are arranged between the positive pole of the execution power supply and the first positive connection point of the switch motor, and the 2 nd group of connection points of the first row of connection points are connected in series with the 2 nd group of connection points of the third row of connection points to form a first branch of the representation circuit;

the 1 st group of connecting points of the second row of connecting points are arranged between the positive pole of the execution power supply and the first positive connecting point of the locking motor, and the 2 nd group of connecting points of the second row of connecting points are connected in series with the 2 nd group of connecting points of the fourth row of connecting points to form a second branch of the representation circuit;

the 1 st group of connecting points of the third row of connecting points are arranged between the positive pole of the execution power supply and the first positive connecting point of the locking motor and are connected with the 1 st group of connecting points of the second row of connecting points in parallel;

the 1 st group of connection points of the fourth row of connection points are arranged between the positive electrode of the execution power supply and a second positive connection point of the switch motor;

the fifth row of contacts is arranged between the positive pole of the execution power supply and the second positive pole contact of the locking motor;

two joints of the 1 st group of joints of the sixth row of joints are respectively connected with two joints of a third switch, when the 1 st group of joints of the sixth row of joints are conducted, the third switch is closed, and when the 1 st group of joints of the sixth row of joints are disconnected, the third switch is disconnected;

two contacts of a group 2 contact of the sixth row of contacts are respectively connected with two contacts of the second switch, when the group 2 contact of the sixth row of contacts is conducted, the second switch is closed, and when the group 2 contact of the sixth row of contacts is disconnected, the second switch is disconnected;

the 1 st group of connection points of the seventh row of connection points are suspended, two connection points of the 2 nd group of connection points are respectively connected with two connection points of the first switch, when the 2 nd group of connection points of the seventh row of connection points are conducted, the first switch is closed, and when the 2 nd group of connection points of the seventh row of connection points are disconnected, the first switch is disconnected;

the eighth row of contacts is disposed between the positive power supply and the first positive contact of the locking motor, and is connected in series with the 1 st group of contacts of the second row of contacts and the 1 st group of contacts of the third row of contacts.

4. The switch control circuit as claimed in claim 3, wherein the action logic of said automatic shutter is:

when the turnout is locked, the fifth row of contacts and the seventh row of contacts of the automatic switch are conducted, and the sixth row of contacts and the eighth row of contacts are disconnected;

when the turnout is unlocked, the fifth row of contacts and the seventh row of contacts of the automatic switch are disconnected, and the sixth row of contacts and the eighth row of contacts are conducted;

when the turnout is positioned at the positioning position, the first row of contact points and the third row of contact points of the automatic switch are conducted, and the second row of contact points and the fourth row of contact points are disconnected;

when the turnout is located at the reverse position, the first row of contact points and the third row of contact points of the automatic switch are disconnected, and the second row of contact points and the fourth row of contact points are conducted;

in the process that the turnout is turned from the positioning position to the reverse position, when the turnout starts to switch, the third row of contacts of the automatic switch are switched to the fourth row of contacts, and when the turnout is switched, the first row of contacts of the automatic switch are switched to the second row of contacts;

in the process that the turnout is turned to the positioning position from the inverted position, when the turnout starts to switch, the first row of contacts of the automatic switch are switched to the second row of contacts, and when the turnout is switched, the fourth row of contacts of the automatic switch are switched to the third row of contacts;

in the turnout unlocking process, when turnout unlocking is started, a seventh row of contacts of the automatic switch are switched to an eighth row of contacts, and when turnout unlocking is finished, a fifth row of contacts of the automatic switch are switched to a sixth row of contacts;

in the turnout locking process, when the turnout is locked to a half, the sixth row of contacts of the automatic switch are connected to the fifth row of contacts, and when the turnout is switched, the eighth row of contacts of the automatic switch are connected to the seventh row of contacts.

5. The switch control circuit as claimed in claim 2 or 3, further comprising:

a relay assembly comprising a plurality of relays, a plurality of said relays and at least one said switch constituting a starting circuit of said switch, lock or indicating circuit for switching said switch, lock or indicating circuit on or off.

6. The switch control circuit as claimed in claim 1, further comprising:

and the interface circuit is used for being connected with the superior system so as to receive the instruction of the superior system or feed back the position of the turnout to the superior system and the system.

7. The switch control circuit of claim 1, wherein the circuit elements of the switch, lock or indication circuit are disposed in a switch cabinet, switch motor box or lock motor box.

8. The switch control circuit as claimed in claim 7, further comprising:

a cable box comprising a plurality of cables through which circuit elements in the switch cabinets are connected with circuit elements in the switch motor box.

9. A switch control system, comprising:

the signal interlocking system is used for issuing a turnout operation instruction and receiving a turnout position indicating signal;

a switch system comprising the switch control circuit of any one of claims 1-8 for controlling a switch motor or a locking motor to accomplish switching and locking of a switch.

10. The switch control system of claim 9, wherein the switch system controls the action of the switch motor based on the switching distance of a swing arm and the action of a locking motor based on the position of a locking mechanism, wherein the switching distance of the swing arm and the position of the locking mechanism are represented by an automatic shutter in the switch control circuit.

Technical Field

The invention relates to the technical field of turnout conversion control, in particular to a turnout control circuit and a turnout control system.

Background

With the increasing demand of various cities for rail transportation, rail transportation systems such as subways, light rails, straddle type monorail and rubber-tyred trams gradually appear in the field of vision of the public, and become the first choice transportation means for traveling. The medium-low traffic system such as straddle type monorail, rubber-tyred tramcar and the like has the advantages of low manufacturing cost, short construction period, small occupied area and the like, and the construction requirements of various cities are increasingly improved. Compared with the traditional large iron and subway, the medium and low traffic system focuses on the light weight and the intellectualization of system equipment.

The switch system is a line connection device for switching a rolling stock from one track to another track, and plays an important role in a rail transit line. The current turnout control process of the straddle type monorail line is as follows: the signal interlocking system issues an operation instruction to the turnout system, the turnout system controls the driving motor to drive the swing arm to rotate, the swing arm drives the track beam to move to a specified position, the track beam limit baffle touches the limit switch, the limit switch outputs a correct position to the turnout system, the turnout system controls the driving motor to stop driving, the turnout system controls the locking motor to lock, the locking motor drives the mechanical structure to complete mechanical action, and the mechanical structure enters a specified position to complete mechanical locking. In the turnout system, a turnout position indicating signal is output by adopting a safety relay, a Programmable Logic Controller (PLC) drives an output relay, and the action condition of the relay is that the turnout reaches a required position and a turnout locking mechanism completes locking. Switch location, counterpoint, unblock, locking state discernment through set up travel switch in every position, PLC gathers travel switch's contact and discerns the switch state.

Such a switch system has the following problems:

firstly, the position of a turnout is represented by touching a limit switch by a limit baffle on the turnout to trigger a limit switch contact to close and output a signal, and the mode depends on a mechanical collision mode, so that the equipment is greatly damaged, and the accuracy is influenced after long-term abrasion; in addition, because the travel switch is exposed and installed outdoors, the travel switch is free of any protective measures and is easily influenced by external factors, such as manual accidental touch, falling object accidental touch and the like.

Secondly, when the turnout is unlocked and locked, the limit switch is firstly needed to send position information to the turnout control system, and the locking motor is controlled by the locking circuit to execute after the turnout system is processed, so that the mode needs to arrange a travel switch at each position, the logic is complex, and the circuit design is complex; moreover, the wiring harness is numerous in actual engineering application, the equipment is difficult to install and maintain, and the cost is high;

and thirdly, the development of rail transit intellectualization, informatization and light weight is not facilitated.

Therefore, it is necessary to provide a switch control circuit and a switch control system to solve the above problems.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a turnout control circuit and a turnout control system, which can reduce the number of interaction nodes of each module circuit, make the control logic clearer and simpler, and reduce the cost by using an automatic switch to replace a travel switch and installing the travel switch in each position.

In order to overcome the problems existing at present, the invention provides, in one aspect, a switch control circuit comprising:

the switch circuit is used for controlling a switch motor to complete turnout positioning and reversing or reversing and positioning operations;

the locking circuit is used for controlling the locking motor to unlock or lock the turnout;

a representation circuit for generating a signal representative of a switch position; and

and an automatic switch including a plurality of rows of contacts, each row of contacts being disposed in one of the switch circuit, the locking circuit and the indication circuit, the automatic switch being connected to the switch and controlling the conduction of the rows of contacts in response to a switch position and/or a locking state of the switch to connect or disconnect the switch circuit, the locking circuit and the indication circuit.

In one embodiment of the present invention, further comprising:

at least one switch, each of said switches being disposed in one of a switch circuit locking circuit and a presentation circuit, and two contacts of said switch being connected by a set of contacts of said automatic switch so that said switch conducts in response to conduction of said set of contacts of said automatic switch.

In one embodiment of the invention, the automatic shutter comprises a first to an eighth row of contacts, each row of contacts comprising a 1 st and a 2 nd group of contacts, each group of contacts comprising two contacts, at least one switch comprising a first to a third switch, each of said switches comprising two contacts, wherein,

the 1 st group of connection points of the first row of connection points are arranged between the positive pole of the execution power supply and the first positive connection point of the switch motor, and the 2 nd group of connection points of the first row of connection points are connected in series with the 2 nd group of connection points of the third row of connection points to form a first branch of the representation circuit;

the 1 st group of connecting points of the second row of connecting points are arranged between the positive pole of the execution power supply and the first positive connecting point of the locking motor, and the 2 nd group of connecting points of the second row of connecting points are connected in series with the 2 nd group of connecting points of the fourth row of connecting points to form a second branch of the representation circuit;

the 1 st group of connecting points of the third row of connecting points are arranged between the positive pole of the execution power supply and the first positive connecting point of the locking motor and are connected with the 1 st group of connecting points of the second row of connecting points in parallel;

the 1 st group of connection points of the fourth row of connection points are arranged between the positive electrode of the execution power supply and a second positive connection point of the switch motor;

the fifth row of contacts is arranged between the positive pole of the execution power supply and the second positive pole contact of the locking motor;

two joints of the 1 st group of joints of the sixth row of joints are respectively connected with two joints of a third switch, when the 1 st group of joints of the sixth row of joints are conducted, the third switch is closed, and when the 1 st group of joints of the sixth row of joints are disconnected, the third switch is disconnected;

two contacts of a group 2 contact of the sixth row of contacts are respectively connected with two contacts of the second switch, when the group 2 contact of the sixth row of contacts is conducted, the second switch is closed, and when the group 2 contact of the sixth row of contacts is disconnected, the second switch is disconnected;

the 1 st group of connection points of the seventh row of connection points are suspended, two connection points of the 2 nd group of connection points are respectively connected with two connection points of the first switch, when the 2 nd group of connection points of the seventh row of connection points are conducted, the first switch is closed, and when the 2 nd group of connection points of the seventh row of connection points are disconnected, the first switch is disconnected;

the eighth row of contacts is disposed between the positive power supply and the first positive contact of the locking motor, and is connected in series with the 1 st group of contacts of the second row of contacts and the 1 st group of contacts of the third row of contacts.

In one embodiment of the present invention, the action logic of the automatic shutter is:

when the turnout is locked, the fifth row of contacts and the seventh row of contacts of the automatic switch are conducted, and the sixth row of contacts and the eighth row of contacts are disconnected;

when the turnout is unlocked, the fifth row of contacts and the seventh row of contacts of the automatic switch are disconnected, and the sixth row of contacts and the eighth row of contacts are conducted;

when the turnout is positioned at the positioning position, the first row of contact points and the third row of contact points of the automatic switch are conducted, and the second row of contact points and the fourth row of contact points are disconnected;

when the turnout is located at the reverse position, the first row of contact points and the third row of contact points of the automatic switch are disconnected, and the second row of contact points and the fourth row of contact points are conducted;

in the process that the turnout is turned from the positioning position to the reverse position, when the turnout starts to switch, the third row of contacts of the automatic switch are switched to the fourth row of contacts, and when the turnout is switched, the first row of contacts of the automatic switch are switched to the second row of contacts;

in the process that the turnout is turned to the positioning position from the inverted position, when the turnout starts to switch, the first row of contacts of the automatic switch are switched to the second row of contacts, and when the turnout is switched, the fourth row of contacts of the automatic switch are switched to the third row of contacts;

in the turnout unlocking process, when turnout unlocking is started, a seventh row of contacts of the automatic switch are switched to an eighth row of contacts, and when turnout unlocking is finished, a fifth row of contacts of the automatic switch are switched to a sixth row of contacts;

in the turnout locking process, when the turnout is locked to a half, the sixth row of contacts of the automatic switch are connected to the fifth row of contacts, and when the turnout is switched, the eighth row of contacts of the automatic switch are connected to the seventh row of contacts.

In one embodiment of the present invention, further comprising:

a relay assembly comprising a plurality of relays, a plurality of said relays and at least one said switch constituting a starting circuit of said switch, lock or indicating circuit for switching said switch, lock or indicating circuit on or off.

In one embodiment of the present invention, further comprising:

and the interface circuit is used for being connected with the superior system so as to receive the instruction of the superior system or feed back the position of the turnout to the superior system and the system.

In one embodiment of the invention, the switch circuit, the locking circuit or the circuit elements in the indicating circuit are arranged in a switch control cabinet, a switch motor box or a locking motor box.

In one embodiment of the present invention, further comprising:

a cable box comprising a plurality of cables through which circuit elements in the switch cabinets are connected with circuit elements in the switch motor box.

In another aspect, the present invention further provides a switch control system, which includes:

the signal interlocking system is used for issuing a turnout operation instruction and receiving a turnout position indicating signal;

and the turnout system comprises the turnout control circuit and is used for controlling the switch motor or the locking motor so as to complete the switching and locking of the turnout.

In one embodiment of the invention, the switch system controls the action of the switch motor according to the switching distance of a swing arm and the action of a locking motor according to the position of a locking mechanism, wherein the switching distance of the swing arm and the position of the locking mechanism are represented by an automatic shutter in the switch control circuit.

According to the switch control circuit and the switch control system of the present invention, the switch position and/or the locking state of the switch are indicated by using the automatic switch instead of the travel switch, and the contact of the automatic switch is provided in the switch circuit, the locking circuit and the indicating circuit, when the contacts of the automatic switch control the conduction of each row of contacts in response to the switch position and/or the locking state of the turnout, the switch circuit, the locking circuit and the indicating circuit are connected or disconnected, thus realizing the interaction of each circuit module through the automatic switch, thereby reducing the interactive nodes of each module circuit, making the control logic clearer and simpler, and using the automatic switch to replace the travel switch, reducing the cost by installing the travel switch corresponding to each position, and the automatic shutter does not need outdoor installation, can directly install in the switch board, has reduced the installation volume and has installed the degree of difficulty.

Drawings

The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In the drawings:

FIG. 1 shows a schematic block diagram of a switch control system according to an embodiment of the present invention;

figure 2 shows a schematic circuit diagram of a switch control circuit according to an embodiment of the present invention;

FIG. 3 shows a schematic circuit diagram representing a circuit according to an embodiment of the invention;

FIG. 4 shows a schematic circuit diagram of a switch circuit according to an embodiment of the invention;

FIG. 5 shows a schematic circuit diagram of a latch circuit according to an embodiment of the invention;

FIG. 6 shows a schematic circuit diagram of an interface circuit according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a relay combination of a switch control cabinet according to an embodiment of the invention;

figure 8 shows a schematic view of an operating panel of a switch control cabinet according to an embodiment of the invention;

FIG. 9 is a schematic diagram of the switch control circuit of FIG. 2 when the switch is unlocked in the flip position;

figure 10 shows a circuit schematic of the switch control circuit of figure 2 when the switch is unlocked in the quarto position.

100 turnout control system

101 signal interlocking system

102 switch system

103 switch motor

104 locking motor

200 turnout control circuit

201 switch control cabinet

202 cable box

203 switch cabinet

204 locking case

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention described herein without inventive step, shall fall within the scope of protection of the invention.

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.

In order to provide a thorough understanding of the present invention, detailed steps and detailed structures will be set forth in the following description in order to explain the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

Before the introduction, the meaning of the terms in this text is explained.

TYJF agreement repeat relay

DCJF: position-removing operating relay

FCJF: anti-reversal operation relay

QQJ field request relay

ZTJ State Relay

TJ: time relay (3 seconds)

DBJ positioning indicating relay

FBJ reverse position indicating relay

1DQJ:1 starting relay

2DQJ:2 starting relay

JSJ unlocking relay

BB transformer

ZTJ state indicating relay

DCJ: fixed operation relay

FCJ: reverse operation relay

JCJ: switch checking relay

DCA: fixed control button

FCA: reverse operation button

Figure 1 shows a schematic block diagram of a switch control system according to an embodiment of the present invention.

As shown in fig. 1, the switch control system 100 disclosed in this embodiment includes a signal interlock system 101, a switch system 102, a switch motor 103, and a locking motor 104.

The signal interlocking system 101 is used for issuing a turnout operation instruction to the turnout system 101 so as to enable the turnout system to execute corresponding operation; and receives switch position indication signals from the switch system 102 to learn the switch position and latching status. For example, the signal interlock system 101 may include a plurality of computers and an input/output unit, where a system formed by the plurality of computers is configured to generate a switch operation command and receive a switch position indication signal, and the input/output unit is configured to issue the switch operation command to the switch system, and specifically may operate a relay in the switch system by the switch operation command, so as to enable the switch system to perform an action corresponding to the switch operation command; and receiving a turnout indication signal of the turnout system, sending the turnout indication signal to a computer, and displaying corresponding indication on a display interface by the computer according to the turnout indication signal.

The switch system 102 includes a switch control circuit and corresponding components for controlling the switch motor 103 to complete the switch of the switch according to the switch operation command of the signal interlock system 101, and controlling the locking motor 104 to complete the locking of the switch, and simultaneously generating a switch indication signal according to the switch position.

Specifically, the switch system 102 controls the action of the switch motor 103 according to the switching distance of the swing arm, and controls the action of the lock motor 104 according to the position of the lock mechanism. For example, when the switching distance of the swing arm indicates that switching is complete, the switch system 102 stops driving the switch motor 103, and when the position of the locking mechanism indicates that locking is complete, the switch system 102 stops driving the locking motor 104.

In this embodiment, the switch control circuit includes an automatic shutter, and the switching distance of the swing arm and the position of the locking mechanism are represented by the automatic shutter in the switch control circuit. That is, in the present embodiment, the automatic switch is used instead of the travel switch to indicate the position of the turnout, so that the mechanical structure logic that can be realized is utilized to make the automatic switch have a logical relationship with the turnout switching distance and the position of the locking mechanism, thereby controlling the operation of the automatic switch, and the automatic switch is incorporated into the locking circuit of the turnout control circuit to realize the direct interaction between the turnout starting circuit and the locking circuit, without installing the travel switch at each position of the outdoor turnout.

As an operation example, the operation process of the turnout control system 100 in this embodiment is that the signal interlock system 101 issues an operation command to the turnout system 102, the turnout system 102 controls the switch motor 103 to drive, the switch motor 103 drives the swing arm to rotate so as to perform turnout switching, the turnout system 102 performs processing according to the distance of the swing arm switching, for example, when the distance of the swing arm switching indicates that the turnout switching is in place, the turnout system 102 controls the switch motor 103 to stop driving, then the turnout system 102 controls the locking motor 104 to perform locking, the locking motor 102 drives the locking structure to complete mechanical operation, and the locking mechanism enters a specified position to complete mechanical locking.

According to the turnout control system, the action of the switch motor is controlled according to the switching distance of the swing arm, and the action of the locking motor is controlled according to the position of the locking mechanism, so that compared with a mode of using a travel switch and a limit baffle, the turnout control system avoids the problems of great damage to equipment and influence on accuracy after long-term abrasion in a mode of mechanical collision, and is not easily influenced by external factors due to the fact that the turnout control system can be installed in a control cabinet. Furthermore, the logic and circuit design of the method is relatively simple, the number of wiring harnesses in actual engineering application is reduced, the difficulty of equipment installation and maintenance is reduced, and the cost is reduced. In addition, be favorable to realizing track intellectuality, informationization and lightweight.

Figure 2 shows a schematic circuit diagram of a switch control circuit according to an embodiment of the present invention; FIG. 3 is a schematic circuit diagram of a representative circuit in the switch control circuit shown in FIG. 2; figure 4 shows a schematic circuit diagram of a switch circuit in the switch control circuit shown in figure 2; fig. 5 shows a schematic circuit diagram of a locking circuit in the switch control circuit shown in fig. 2. FIG. 6 shows a schematic circuit diagram of an interface circuit according to an embodiment of the invention; FIG. 7 is a schematic diagram of a relay combination of a switch control cabinet according to an embodiment of the invention; figure 8 shows a schematic view of an operation panel of a switch control cabinet according to an embodiment of the invention.

The switch control circuit implemented according to the invention is described below with reference to fig. 2 to 8.

As shown in fig. 2 to 5, the switch control circuit 200 disclosed in this embodiment is a single-switch five-wire control circuit, which totally uses 7 gravity-type safety relays, that is, a de-positioning operating relay DCJF, a de-inversion operating relay FCJF, a start-up relay lDQJ, a two start-up relay 2DQJ, a switch positioning indicating relay DBJ, a switch inversion indicating relay FBJ, a switch unlocking relay JSJ, and three switches, where the first switch includes contacts K1 and K2, the second switch includes contacts K3 and K4, the third switch includes contacts K5 and K6, and an automatic switch (black origin position in fig. 2 indicates a contact of the automatic switch) includes first to eighth rows of contacts, each row of contacts includes two groups of contacts, and each group of contacts includes two contacts; the circuit elements are arranged in a switch control cabinet 201, a switch motor box 203 and a locking motor box 204, the circuit elements in the switch control cabinet 201 are connected with the circuit elements in the switch motor box 203 through cables in a cable box 202, a cable line X1 is a reverse operation control signal line, an X2 is a fixed operation control signal line, an X3 switch position represents a signal line, an X4 is a switch position represents a return line, and an X5 is a control return line.

The excitation coil, the 7 th group and the 8 th group of contacts of the starting relay 1DQJ, the excitation coil, the 1 st group and the 2 nd group of contacts (11, 12, 13, 21, 22, 23) of the two starting relays 2DQJ, the 1 st group of contacts of the de-positioning control relay DCJF, the 1 st group of contacts of the de-inversion control relay FCJF, second switches K3 and K4, third switches K5 and K6, the 1 st group of contacts (11, 12) of the first row of contacts of the automatic switch, the 1 st group of contacts (41 and 42) of the fourth row of contacts, the first overshoot protection switch and the second overshoot protection switch form a switch circuit, and the switch circuit is used for controlling the switch motor to complete switch positioning de-inversion or anti-inversion de-positioning operation. The turnout positioning and anti-reversing operation means that the turnout is switched from a positioning position to an anti-reversing position, and the turnout anti-reversing and positioning operation means that the turnout is switched from the anti-reversing position to the positioning position. The specific connection relationship of the switch circuit is that 1, 3 contacts of the excitation coil of a starting relay 1DQJ are respectively connected with an execution power supply positive electrode DZ220V and a power supply positive electrode KZ (for example, 24V), 2, 4 contacts are respectively connected with a contact K3 of a second switch and 11 contacts in a group 1 contact of a second starting relay 2 DQJ; 12 contacts in the 1 st group of contacts of the two starting relays 2DQJ are connected with the 1 st contact in the 1 st group of contacts of the reverse position control relay FCJF and the 1 st contact in the 7 th group of contacts of the one starting relay 1DQJ, 13 contacts in the 1 st group of contacts of the two starting relays 2DQJ are connected with the 1 st contact in the 1 st group of contacts of the reverse position control relay DCJF and the 1 st contact in the 8 th group of contacts of the one starting relay 1DQJ, the 2 nd contact in the 1 st group of contacts of the reverse position control relay FCJF and the 2 nd contact in the 1 st group of contacts of the reverse position control relay DCJF are connected with the negative electrode KZ of the power supply, the 2 nd contact in the 7 th group of contacts of the one starting relay 1DQJ and the 2 nd contact in the 8 th group of the one starting relay 1DQJ are respectively connected with the 3 and 1 contacts of the excitation coil of the two starting relays 2DQJ, the 2 and 4 contacts of the excitation coil of the two starting relay 2DQJ are connected with the 3K 6, the K5 contact of the third switch is connected to the positive power supply electrode KZ. The contact K4 of the second switch is connected with the 21 contact in the 2 nd group of contacts of the two starting relays 2DQJ, the 22 and 23 contacts in the 2 nd group of contacts of the two starting relays 2DQJ are respectively connected with the contact 11 in the 1 st group of contacts of the first row of contacts of the automatic shutter and the contact 41 in the 1 st group of contacts of the fourth row of contacts through cables X1 and X2, the contact 12 in the 1 st group of contacts of the first row of contacts of the automatic shutter and the contact 42 in the 1 st group of contacts of the fourth row of contacts are respectively connected with the first positive contact 6 and the second positive contact 5 of the switch motor through the overshoot protection switches (3 and 4) and the overshoot protection switches (1 and 2), and the negative contact of the switch motor is connected with the execution power supply negative pole DF 220V. Contacts K3 and K4 of the second switch are connected to group 2 contacts (63, 64) of the sixth row of contacts of the automatic switch, respectively, and contacts K5 and K6 of the third switch are connected to group 1 contacts (61, 62) of the sixth row of contacts of the automatic switch, respectively.

The 6 th group of contacts of a starting relay 1DQJ, remove the 2 nd group of contacts of location control relay DCJF, remove 2 nd group of contacts of counterpoint control relay FCJF, the excitation coil and the 1 st group of contacts of unblock relay JSJ, automatic switch fifth row of contacts and eighth row of contacts, the first group of contacts (21, 22) of second row of contacts and the first group of contacts (31, 32) of third row of contacts constitute the locking circuit, the locking circuit is used for controlling the locking motor to accomplish switch unblock or locking, the locking circuit includes unblock branch road and locking branch. The connection relation of the unlocking branch is as follows: the 1 st contact of the 6 th group of contacts of a starting relay 1DQJ is connected with a power supply positive electrode KZ, the 2 nd contact is connected with the 1 contact of an excitation coil of an unlocking relay JSJ, the 2 contact of the excitation coil of the unlocking relay JSJ is connected with a power supply negative electrode to form an excitation circuit of the unlocking relay JSJ, the 3 contacts of the excitation coil of the unlocking relay JSJ are connected with an execution power supply positive electrode DZ220V, and the 4 contacts are connected with a second positive electrode contact 6 of a locking motor through the 1 st group of contacts of the JSJ and a fifth row of contacts of an automatic shutter. The locking branch comprises a de-positioning control locking branch and a de-inversion control locking branch, a 2 nd group of connection points of a de-positioning control relay DCJF and a first group of connection points (31, 32) of a third row of connection points of an automatic shutter are connected in series to form the de-positioning control locking branch, a 2 nd group of connection points of a de-inversion control relay FCJF and a first group of connection points (21, 22) of a second row of connection points of the automatic shutter are connected in series to form the de-inversion control locking branch, the de-positioning control locking branch and the de-inversion control locking branch are connected in parallel, one end of the de-inversion control relay FCJF is connected with an execution power supply positive electrode DZ220V, the other end of the de-positioning control locking branch is connected with a first positive electrode connection point 4 of a locking motor through an automatic shutter eighth row of connection points, and a negative.

The switch positioning indicating relay DBJ, the switch reverse indicating relay FBJ, the transformer BB, the slide rheostat, the 3 rd group contact of the two starting relays 2DQJ, the 2 nd group contacts (13, 14) of the first row of contacts of the automatic switch, the 2 nd group contacts (23, 24) of the second row of contacts, the 2 nd group contacts (33, 34) of the third row of contacts, the 2 nd group contacts (43, 44) of the fourth row of contacts, and the first switches (K1, K2) form an indicating circuit for generating signals indicating switch positions. The connection relationship of the representation circuit is as follows: the switch positioning shows that one end of an excitation coil of a relay DBJ is connected with a contact of a transformer 3, the other end of the excitation coil of the relay DBJ is connected with 32 contacts in a third group of contacts of two starting relays 2DQJ, the switch reverse position shows that one end of the excitation coil of a relay FBJ is connected with the contact of the transformer 3, the other end of the excitation coil of the relay FBJ is connected with 33 contacts in the third group of contacts of two starting relays 2DQJ, 31 contacts in the third group of contacts of two starting relays 2DQJ are connected with a K1 contact of a first switch, the K2 contact of the first switch is connected with a contact of an automatic switch through a cable X3, wherein the second group of contacts of the first row and the third row of contacts of the automatic switch are connected in series, one end of the series; the second set of contacts of the second and fourth rows of contacts are connected in series, with one end of the series connected to cable X3 and the other end connected to cable X4, cable X4 being connected to the 4 contacts of the voltage BB via a sliding varistor. The 1 and 2 contacts of the transformer BB are connected to the positive power supply electrode KZ220V and the negative power supply electrode KF220V, respectively.

In the switch control circuit, the delocalization operating relay DCJF, the delocalization operating relay FCJF, the one-start relay lDQJ, the two-start relay 2DQJ, and the first to third switches constitute a start circuit of the switch circuit, the lock circuit, or the indicating circuit, for turning on or off the switch circuit, the lock circuit, or the indicating circuit.

In the above switch control circuit, the switch is connected to a part of the contact points of the automatic switch, and is turned on in response to conduction of the part of the contact points of the automatic switch. The automatic shutter is also connected to the points and controls the conduction of the rows of contacts in response to the point position and/or the locking state of the points, thereby making or breaking the switch circuit, the locking circuit and the indication circuit.

Specifically, in the present embodiment, the position of the switch is indicated by using the automatic switch instead of the travel switch, and the logic relationship between the automatic switch and the switch distance and the locking condition of the switch is realized by using the realizable mechanical structure logic, so as to control the action of the automatic switch.

In this embodiment, the action logic of the automatic shutter is:

when the turnout is locked, the fifth row of contacts and the seventh row of contacts of the automatic switch are conducted, and the sixth row of contacts and the eighth row of contacts are disconnected;

when the turnout is unlocked, the fifth row of contacts and the seventh row of contacts of the automatic switch are disconnected, and the sixth row of contacts and the eighth row of contacts are conducted;

when the turnout is positioned at the positioning position, the first row of contact points and the third row of contact points of the automatic switch are conducted, and the second row of contact points and the fourth row of contact points are disconnected;

when the turnout is located at the reverse position, the first row of contact points and the third row of contact points of the automatic switch are disconnected, and the second row of contact points and the fourth row of contact points are conducted;

in the process that the turnout is turned from the positioning position to the reverse position, when the turnout starts to switch, the third row of contacts of the automatic switch are switched to the fourth row of contacts, when the turnout is switched, the first row of contacts of the automatic switch are switched to the second row of contacts, wherein the fact that the third row of contacts of the automatic switch are switched to the fourth row of contacts means that the automatic switch is switched from the third row of contacts to the fourth row of contacts, and the following similar meanings are the same;

in the process that the turnout is turned to a positioning position from an inverted position, when the turnout starts to switch, a first row of contacts of the automatic switch are switched to a second row of contacts, when the turnout is completed, a fourth row of contacts of the automatic switch are switched to a third row of contacts, wherein the starting to switch means that a mechanical action buffer time of 1 second, for example, is provided before a turnout sliding block moves;

in the turnout unlocking process, when turnout unlocking is started, a seventh row of contacts of the automatic switch are switched to an eighth row of contacts, and when turnout unlocking is finished, a fifth row of contacts of the automatic switch are switched to a sixth row of contacts;

in the turnout locking process, when the turnout is locked to a half, the sixth row of contacts of the automatic switch are connected to the fifth row of contacts, and when the turnout is switched, the eighth row of contacts of the automatic switch are connected to the seventh row of contacts.

The switch control circuit of this embodiment further includes an interface circuit for connecting with a superior system (e.g., the signal interlock system in fig. 1) to receive commands from the superior system or to feed back the position of the switch to the superior and the system. Fig. 6 shows a schematic circuit diagram of an interface circuit according to an embodiment of the invention. As shown in fig. 6, the interface circuit of the present embodiment includes a plurality of relays, and the connection relationship between the relays is as shown in fig. 6, which is not described herein again. The function of each relay of the turnout control circuit of the embodiment can be seen in fig. 7, wherein the upper part of the relays belong to an interface layer to complete the interaction with an upper layer system, and the lower part of the relays belong to a logic layer to complete the control of the turnout control circuit.

The turnout control circuit of the embodiment can receive the instruction of the upper layer system through the interface circuit, perform corresponding action according to the upper layer instruction, and also can be controlled by operating the control panel by field operators. An example of a field panel is shown in fig. 8.

The principle of the switch control circuit of the embodiment is as follows:

first, the function of a start relay 1DQJ (normal 1DQJ ↓): 1DQJ ×) as the front contact, is one of the conditions for communicating the conduction of the switch circuit and the latch circuit. Herein ↓ represents a relay spiral, and ↓ represents a relay suction, which causes the circuit to be on when sucked, and causes the circuit to be off when dropped. Wherein the content of the first and second substances,

(1) positioning de-inversion operation

Excitation time: when the control is centralized (i.e. the control of the upper system) or under the control of the field, the operation of removing the reverse position is carried out. FCJF ≠ 1, the excitation circuit of communication 1DQJ, and the excitation circuit of 1DQJ are KZ-protection switches-1 DQJ3_ 4-2 DQJ11_ 12-FCJF 11_ 12-KF.

Excitation circuit disconnection timing: when the switch is unlocked, the contact of the 6 th row 61_62 of the automatic switch is switched on, the third switches K5-K6 are switched on, the coil 2DQJ3_4 is electrified to be switched to the pole, the contact 2DQJ11_12 in the 1DQJ exciting circuit is switched off, and the 1DQJ exciting circuit is de-electrified.

Self-closing time: when the switch is unlocked, the contact 63_64 of the row 6 contact of the automatic switch is connected, the second switches K3-K4 are connected, the 2DQJ3_4 coil is electrified, the 2DQJ contact 21_22 is connected, and the self-closing circuit of the 1DQJ1_2 coil is communicated, and the self-closing circuit of the 1DQJ1_2 coil is as follows: DZ 220V-power switch-1 DQJ1_ 2-K3 _ K4-2 DQJ21_ 22-FZ _ X1-automatic shutter 11_ 12-overshoot protection switch 3_ 4-switch motor M-FZ _ X5-DF 220V.

The time for cutting off the self-closing circuit: when the turnout is switched to the reverse position, the turnout is not locked. When the automatic switch is opened from the 1 st row to the 2 nd row, the contact of the automatic switch 11_12 is opened, the 1DQJ1_2 is lost from the closed circuit, and the switch motor is lost to stop operation.

(2) Reversed de-positioning

Excitation time: when the control is centralized or under field control, the control carries out the delocalization operation, namely DCJF ≠ 1, the excitation circuit of communication 1DQJ, and the excitation circuit of communication 1DQJ are KZ-protection switches-1 DQJ3_ 4-2 DQJ11_ 13-DCJF 11_ 12-KF.

Excitation circuit disconnection timing: when the switch is unlocked, the contact of the 6 th row 61_62(K5-K6) of the automatic switch is switched on, the 2DQJ1_2 coil is electrified to change the pole, the 2DQJ11_13 contact in the 1DQJ excitation circuit is switched off, and the 1DQJ excitation circuit is de-electrified.

Self-closing time: when the switch is unlocked, the contact of the 6 th row 63_64(K3-K4) of the automatic switch is switched on, the 2DQJ1_2 coil is electrified to be a transfer electrode, and the 2DQJ contact 21_23 is switched on. A self-closing circuit communicating with coil 1DQJ1_2 (DZ 220V-power switch-1 DQJ1_ 2-K3 _ K4-2 DQJ21_ 23-FZ _ X2-automatic shutter 41_ 42-overshoot protection switch 1_ 2-switch motor M-FZ _ X5-DF 220V).

The time for cutting off the self-closing circuit: when the turnout is switched to the positioning position, the turnout is not locked. When the automatic switch is turned from row 4 to row 3, the contact of the automatic switch 41_42 is opened, the 1DQJ1_2 is lost from the closed circuit, and the switch motor is stopped.

Second, the function of the second start relay 2DQJ: 2DQJ has two poles, and by switching the switch state, it can realize the phase change of the switch DC switcher, and switch the exciting circuit of the circuit relay and cut off the exciting circuit of 1 DQJ.

The pole switching time is as follows: when the device is controlled in a centralized or field mode, the device performs manipulation action, and FCJF ↓orDCJF ℃. When the switch is unlocked, the row 6 of the automatic switch is closed, the contact 61_62 is closed, the third switches K5-K6 are turned on, and the polarity of 2DQJ is changed.

FCJF ↓, orientation → contra-position reversal:

KZ—K5_K6—2DQJ3_4—1DQJ71_72—FCJF11_12—KF。

DCJF ↓, reverse position → orientation rotor:

KZ—K5_K6—2DQJ1_2—1DQJ81_82—DCJF11_12—KF。

thirdly, unlocking the relay JSJ: as an important condition for communicating the unlocking circuit of the locking motor.

Excitation time: when the steering motion FCJF ≠ or DCJF ℃, < 1 > 1DQJ ℃ ≧ is executed under centralized or field control, the excitation circuit through the 1DQJ61_62 contact communicates with the JSJ1_2 coil, and the excitation circuit through the JSJ1_2 coil is: KZ-1 DQJ 61-62-KF.

Communicating switch motor circuit opportunities: when JSJ ≠ is made, it communicates JSJ43_4 coil and lock motor circuit, KZ — JSJ43_ 4-JSJ 11_ 12-automatic shutter 51_ 53-automatic shutter 53_ 54-lock motor M-KF, through JSJ11_12 front contact and automatic shutter row 5 contact.

Timing for cutting off the switch motor circuit: when the switch is unlocked completely and the 5 th row of the automatic switch is opened to the 6 th row, the contact of the automatic switch 51_53/53_54 is opened, the JSJ43_4 coil is powered off, and the locking motor is powered off to stop rotating.

The falling time is as follows: when the turnout is switched in place once, the turnout is not locked. 1DQJ3_4 self-closing coil is powered off and falls, 1DQJ ↓ causes JSJ1_2 excitation coil to be powered off, JSJ ↓.

As an example of operation, the operation of the switch control circuit 200 according to the present embodiment will be described with a positioning operation to a reverse operation. Wherein "meshed" means sucking up and "↓" means dropping. The process of positioning and manipulating to the reverse position comprises the following steps:

first, the "turnout off-center" maneuver is performed by a commissioning person or an ATS, specifically, for centralized control, the process is: JSJ ↓ -DCJ ↓/FCJ ↓ -ZTJ ↓ -FCJF ↓, to the field control process: DCA press-ZTJ ↓ -FCJF ×.

Then, the logic layer acts: FCJF ↓ -1 DQJ3-4 × -JSJ ×, communication locking motor unblock circuit.

And then, the locking motor is unlocked, and the unlocking is finished. Contacts of 6 th row (K3_ K4/K5_ K6) and 8 th row (locking circuit) of the automatic switch are switched on, and contacts of 5 th row (unlocking circuit) and 7 th row (K1_ K2-DBJ ↓) are switched off;

subsequently, K5_ K6 is turned on, and FCJF ↓ -1 DQJ3-4 ℃,. sup.2 2DQJ3_4 is caused to rotate in electric direction.

Next, K3_ K4 is turned on, 2DQJ is switched to the pole, and is communicated to the reverse switching circuit, DZ 220V-power switch-1 DQJ1_ 2-K3 _ K4-2 DQJ21_ 22-FZ _ X1-automatic shutter 11_ 12-overshoot protection switch 3_ 4-switching motor M-FZ _ X5-DF 220V.

Then, the switch is turned to the reverse position, the automatic switch is communicated with the 4 th row (41_42) and the 2 nd row (21_22), the 1 st row (11_12) and the 3 rd row (31_32) are disconnected, and the switch motor stops operating.

Then, the automatic shutter 21_22 communicates with the FCJF ≠ to communicate with the latch circuit of the latch motor, and the latch motor performs the latch operation. KZ — FCJF21_22 — automatic shutter 21_22 — automatic shutter 81_82 — automatic shutter 83_84 — locking motor M — KF.

Then, the locking motor is locked, and the locking is completed. The automatic shutter has contacts in row 6 (K3_ K4/K5_ K6) and row 8 (latch circuit) opened, and contacts in row 5 (latch circuit) and row 7 (K1_ K2-FBJ ≠ opened).

Then, after the switch has completed one positioning operation to reverse the switch, the automatic shutter K1_ K2 is turned on by 2DQJ switching, and therefore FBJ ≠ g. BB 3-FBJ 1_ 4-2 DQJ31_ 33-K1 _ K2-FZ _ X3-automatic shutter 23_ 2-automatic shutter 43_ 44-FZ _ X4-sliding rheostat-BB 4.

And finally, the FBJ ↓ -FBJF ↓, the signal interlocking system collects the FBJF ×) state and gives a human-computer interface inversion representation.

According to the turnout control circuit of the embodiment, the automatic switch is used for communicating the turnout position with the switch circuit, the locking circuit and the indicating circuit, so that interaction nodes among all module circuits are reduced, the control logic is clearer and simpler, and because the operation action is strictly executed according to the logic definition, if a fault occurs, the on-line beam-feeding maintenance is not needed, and the problem point can be rapidly determined by combining the maintenance document. The following describes an example of the failure analysis of the switch control circuit according to the present embodiment with reference to fig. 9 and 10.

Figure 9 shows a schematic diagram of the switch control circuit of figure 2 when the switch is unlocked in the flip position.

As shown in fig. 9, the failure phenomenon: the turnout is operated from a positioning position to a reverse position, and when the turnout is normally unlocked and is transferred to the reverse position, the locking motor does not execute locking action.

And (3) loss of table analysis:

the turnout does not complete the whole switching action, the switching overtime FCJF ↓isinterlocked with the switching overtime FCJF ↓withoutcollecting the turnout position information, and turnout loss table information is given.

And (3) fault analysis:

contact failure of automatic switch, burning out of locking motor, circuit breaking, power failure, etc

Emergency fault processing:

firstly, a reverse operation command is given to the turnout again, and if the FCJF ≠ g, the locking motor does not act. And the joint gives a positioning operation command to the turnout again, and if the DCJF ↓ -1 DQJ × -2 DQJ turns to the pole, the turnout is positioned and switched.

Then, if the switch is switched from the flip position to the positioning position and the locking is completed, and the positioning indication information is given, the flip locking circuit failure in the locking circuit (FCJF and the portion where the second row first area contact points 21, 22 of the automatic shutter are located) is described; if the turnout is switched from the reverse position to the positioning position and is not locked, the fault of the whole locking circuit, the positioning reverse locking common part circuit or the fault of the positioning reverse locking respective locking circuit is indicated.

Figure 10 shows a circuit schematic of the switch control circuit of figure 2 when the switch is unlocked in the quarto position.

As shown in fig. 10, the failure phenomenon: the turnout is operated from a positioning position to a reverse position, and when the turnout is turned to midway, the turnout stops acting.

And (3) loss of table analysis:

the turnout does not complete the whole switching action, the switching overtime FCJF ↓isinterlocked with the switching overtime FCJF ↓withoutcollecting the turnout position information, and turnout loss table information is given.

And (3) fault analysis:

poor contact of automatic switch contacts, burning out of a switch motor, circuit breaking, power loss and the like.

Emergency fault processing:

firstly, a positioning operation command is given to the turnout, the turnout is turned to the original position, and if DCJF ↓ -1 DQJ × -2 DQJ pole turning-turnout positioning switching is carried out.

Then, if the turnout is switched from the quarto position to the positioning position, and locking is completed, and positioning indication information is given, a part of reversal point switch circuit faults in the whole switch circuit are explained (the 22 contact of 2DQJ is connected with the 3 and 4 contact parts of the overshoot protection switch); if the turnout does not act at the position of four switches, the circuit in the whole switch, the common part of the positioning reversal switch circuit or the respective part of the positioning reversal switch circuit are indicated to have faults.

The switch control circuit according to the embodiment has the following advantages:

from the angle of circuit safety control, the scheme reduces interaction nodes among all module circuits, makes control logic clearer and simpler, and accords with the lightweight design principle.

Two, from equipment fixing and cost angle, intelligent automatic switch is lower than every position installation travel switch's cost to but direct mount need not outdoor installation in the switch control cabinet, reduces the installation volume and the installation degree of difficulty.

From the aspects of operation and maintenance and safety, the intelligent equipment is strictly executed according to logic definition, so that the whole system is safer and more stable; if the fault occurs, the maintenance on the upper beam is not needed, and the problem point can be rapidly determined by combining the maintenance document.

It should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present invention should not be construed to reflect the intent: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

The above description is only for the specific embodiment of the present invention or the description thereof, and the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.