CN112441069B - Turnout position detection system, method and readable storage medium - Google Patents
Turnout position detection system, method and readable storage medium Download PDFInfo
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- CN112441069B CN112441069B CN201910810532.4A CN201910810532A CN112441069B CN 112441069 B CN112441069 B CN 112441069B CN 201910810532 A CN201910810532 A CN 201910810532A CN 112441069 B CN112441069 B CN 112441069B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
- B61L5/107—Locking mechanisms for points; Means for indicating the setting of points electrical control of points position
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Abstract
In the system, first, a first control device may generate a first position signal according to switching states of a first turnout positioning limit switch, a first turnout reversal limit switch, and N first locking limit switches. Meanwhile, the second control device can also generate corresponding trigger signals according to the switch states of the second turnout positioning limit switch, the second turnout inversion limit switch and the N second locking limit switches, then the second control device sends the trigger signals to the first control device so that the first control device generates corresponding second position signals based on the trigger signals, and finally the first control device determines the position of the turnout according to the first position signals and the second position signals. So, confirm the position of switch through the comparison of two return circuits signal, improve the degree of accuracy to switch position detection, guarantee the safety that the train traveles in the switch.
Description
Technical Field
The present disclosure relates to the field of traffic track technologies, and in particular, to a turnout position detection system, a turnout position detection method, and a readable storage medium.
Background
In rail transit systems, the track of some vehicle systems is a single track, and the connections between the various loops for the track are made by alternating switches. How to carry out intellectual detection system to the position of switch high-efficiently is more and more taken attention to by people. At present, a switch motor is mainly adopted to drive a trolley and a turnout beam to move, when the trolley reaches a specified turnout position, the trolley touches a position switch, the position switch acts and provides a signal to a Programmable Logic Controller (PLC). And the PLC controls the switch motor to stop running so as to realize the switch of the turnout. Meanwhile, the PLC outputs corresponding position signals through a control strategy prestored in the PLC so as to realize the purpose of detecting the position of the turnout. However, when the switch position is detected by the above method, there is a possibility that the switch position is erroneously detected. Therefore, in the related art, the detection of the switch position is inaccurate.
Disclosure of Invention
An object of the present disclosure is to provide a switch position detection system, method and readable storage medium to improve the accuracy of switch position detection.
In order to achieve the above object, the present disclosure provides a switch position detection system including:
the turnout locking device comprises N locking devices, a first locking limiting switch and a second locking limiting switch, wherein the N locking devices are arranged on the turnout, each locking device comprises the first locking limiting switch and the second locking limiting switch, when the turnout is in a locking state, the N first locking limiting switches and the N second locking limiting switches are closed, and N is an integer greater than or equal to 1;
the first turnout positioning limit switch and the second turnout positioning limit switch are both arranged on a preset positioning ground and are used for being closed when the locking state is a positioning locking state;
the first turnout reverse position limit switch and the second turnout reverse position limit switch are both arranged on a preset reverse position ground and are used for being closed when the locking state is a reverse locking state;
the first control device is respectively connected with the first turnout positioning limit switch, the first turnout reversal limit switch and the N first locking limit switches and is used for generating corresponding first position signals according to the switching states of the first turnout positioning limit switch, the first turnout reversal limit switch and the N first locking limit switches;
the second control device is respectively connected with the second turnout positioning limit switch, the second turnout inversion limit switch and the N second locking limit switches and is used for generating corresponding trigger signals according to the switch states of the second turnout positioning limit switch, the second turnout inversion limit switch and the N second locking limit switches;
the first control device is further configured to be connected to the second control device, and configured to generate a corresponding second position signal according to a trigger signal generated by the second control device, and determine the position information of the turnout according to the first position signal and the second position signal.
Optionally, the first control device is further configured to determine the position information of the switch when the first position signal and the second position signal are consistent.
Optionally, the first position signal comprises a first position location signal and a first anti-position location signal, and the second position signal comprises a second position location signal and a second anti-position location signal;
the first control device is used for generating the first positioning position signal when the switch states of the first turnout positioning limit switch and the N first locking limit switches are both closed states, and generating the first reverse position signal when the switch states of the first turnout reverse position limit switch and the N first locking limit switches are both closed states;
the second control device is used for generating a trigger signal for representing that the switch is in place when the switch states of the second turnout positioning limit switch and the N second locking limit switches are both closed states, and generating a trigger signal for representing that the switch is in place when the switch states of the second turnout reversing limit switch and the N second locking limit switches are both closed states;
the first control device is used for generating the second positioning position signal when receiving the trigger signal for representing the positioning in place, determining that the turnout is positioned when the first position signal is the first positioning position signal, generating the second inversion position signal when receiving the trigger signal for representing the inversion in place, and determining that the turnout is positioned in the inversion when the first position signal is the first inversion position signal.
Optionally, the first control device is a programmable logic controller PLC, and the second control device includes a plurality of safety relays;
the PLC is respectively connected with the first turnout positioning limit switch, the first turnout reverse position limit switch and the N first locking limit switches through N +2 pins;
a coil of the safety relay KA1 is connected with the second turnout positioning limit switch and used for being electrified when the second turnout positioning limit switch is closed to trigger the normally open contact of the safety relay KA1 to be closed;
a coil of the safety relay KA2 is connected with the N second locking limit switches and is used for being electrified when the N second locking limit switches are closed to trigger the normally open contact of the safety relay KA2 to be closed;
a coil of the safety relay KA3 is connected with a normally open contact of the safety relay KA1 and a normally open contact of the safety relay KA2, and is used for generating a trigger signal for triggering the normally open contact of the safety relay KA3 to be closed when the normally open contact of the safety relay KA1 and the normally open contact of the safety relay KA2 are both closed;
a coil of the safety relay KA4 is connected with the second turnout reverse position limit switch and used for being electrified when the second turnout reverse position limit switch is closed to trigger a normally open contact of the safety relay KA4 to be closed;
a coil of the safety relay KA5 is connected with a normally open contact of the safety relay KA2 and a normally open contact of the safety relay KA4, and is used for electrifying when the normally open contact of the safety relay KA2 and the normally open contact of the safety relay KA4 are both closed to generate a trigger signal for triggering the normally open contact of the safety relay KA5 to be closed;
the PLC is also connected with the normally open contact of the safety relay KA3 and the normally open contact of the safety relay KA5 through two input pins respectively, and is used for generating a corresponding second position signal according to the triggering signal sent by the safety relay KA3 or the safety relay KA5 and used for triggering the normally open contact to be closed.
Optionally, the system further comprises: safety relay KA6 and safety relay KA 7;
PLC through two output pin respectively with safety relay KA 6's coil with safety relay KA 7's coil links to each other, is used for the positional information sign of switch when the switch is located the location, control safety relay KA 6's coil circular telegram, in order to trigger safety relay KA6 normally open contact is closed, and the positional information sign of switch when the switch is located the counterpoint, control safety relay KA 7's coil circular telegram, in order to trigger safety relay KA 7's normally open contact is closed.
Optionally, the normally open contact of the safety relay KA3 is connected in series between the output pin of the PLC and the coil of the full relay KA6, and the normally open contact of the safety relay KA5 is connected in series between the output pin of the PLC and the coil of the full relay KA 7.
Optionally, the system further comprises: an alarm device;
and the first control device is connected with the alarm device and used for controlling the alarm device to output alarm information when the first position signal is inconsistent with the second position signal so as to prompt a user that the turnout is abnormal.
The disclosure also provides a turnout position detection method, wherein N locking devices are arranged on the turnout, and each locking device comprises a first locking limit switch and a second locking limit switch; the first turnout positioning limit switch and the second turnout positioning limit switch are arranged on a preset positioning ground; the first turnout reverse position limit switch and the second turnout reverse position limit switch are arranged on a preset reverse position ground; the method comprises the following steps:
acquiring the switching states of the first turnout positioning limit switch, the second turnout positioning limit switch, the first turnout reverse limit switch, the second turnout reverse limit switch, N first locking limit switches and N second locking limit switches;
generating corresponding first position signals according to the switch states of the first turnout positioning limit switch, the first turnout reverse position limit switch and the N first locking limit switches;
generating corresponding second position signals according to the states of the second turnout positioning limit switch, the second turnout reverse position limit switch and the N second locking limit switches;
and determining the position information of the turnout according to the first position signal and the second position signal.
Optionally, the determining the position information of the switch according to the first position signal and the second position signal includes:
judging whether the first position signal and the second position signal are consistent;
and if the first position signal is consistent with the second position signal, determining the position information of the turnout.
The present disclosure also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method provided by the present disclosure.
Through the technical scheme, firstly, the first control device can generate corresponding first position signals according to the switch states of the first turnout positioning limit switch, the first turnout reversed position limit switch and the N first locking limit switches, and the first position signals are used for representing signals of whether the turnout is positioned or reversed. Meanwhile, the second control device can also generate corresponding trigger signals according to the switch states of the second turnout positioning limit switch, the second turnout inversion limit switch and the N second locking limit switches, then the second control device sends the trigger signals to the first control device, so that the first control device generates corresponding second position signals based on the trigger signals, the second position signals are also used for representing whether the turnout is positioned or inverted, and finally the first control device determines the position of the turnout according to the first position signals and the second position signals. Like this, according to above-mentioned mode, can be divided into two the way with the limit switch's of setting on the switch signal, the limit switch signal of the same way directly obtains first position signal through first controlling means processing, another way limit switch signal is handled through first controlling means after second controlling means earlier and is obtained second position signal, afterwards, according to first position signal and second position signal, confirm the position information of switch, so, confirm the position of switch through the comparison of two return circuits signal, thereby can reduce and lead to the false retrieval to the switch position because of one of them signal return circuit appears unusually, improve the degree of accuracy to switch position detection, guarantee the safety that the train traveles in the switch.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a block diagram of a switch position detection system according to an exemplary embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a switch position detection system according to an exemplary embodiment of the present disclosure.
Fig. 3 is a schematic diagram of a PLC input pin according to an exemplary embodiment of the present disclosure.
FIG. 4 is a schematic illustration of a second control device according to an exemplary embodiment of the present disclosure.
Fig. 5 is a schematic diagram of a PLC output pin according to an exemplary embodiment of the present disclosure.
Fig. 6 is a flowchart of a switch position detection method according to an exemplary embodiment of the present disclosure.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
To solve the problems in the related art, the present disclosure provides a switch position detection system, method, and readable storage medium. Fig. 1 is a block diagram of a switch position detection system according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the system may include: n number of locking devices 10, where N is an integer greater than or equal to 1.
In the present disclosure, the N locking devices 10 are disposed on the switch, and in one embodiment, the N locking devices 10 are respectively in one-to-one correspondence with N switch nodes on the switch, that is, the number of the locking devices 10 is the same as the number of the switch nodes to the switch. If there are four points, there are four corresponding locking devices 10. In another embodiment, the number of locking devices 10 is different from the number of switch nodes. Illustratively, the switch nodes are four, the number of locking devices 10 may be three or five, and so on. In the present disclosure, the number of the locking devices 10 is not particularly limited.
Each of the N locking devices 10 includes a first locking limit switch and a second locking limit switch. In general, after a switch reaches a predetermined position, in order to fix the switch from moving, a limit switch on the switch may be locked with a lock device predetermined on the ground, that is, the limit switch is closed. Therefore, in the present disclosure, when the switch is in the locked state, the N first locking limit switches and the N second locking limit switches are both closed.
It should be noted that the track manager will predefine the location and the flipping of the switches. For example, one of the multiple strands of tracks may be defined as positioning and the other strands of tracks may be defined as inversion. In this disclosure, for ease of description, it is default that the traffic track comprises two tracks, one track defined as positioning and the other track defined as inversion. In addition, the case where the traffic track includes a multi-strand track (for example, three strands, five strands, etc.) is also applicable to the present disclosure, and in particular, the positioning and the inversion of the turnout may be defined by itself according to actual requirements, and is not particularly limited in the present disclosure.
In order to detect whether the switch is in the positioning or the reverse position, in the present disclosure, as shown in fig. 1, the system further includes: the turnout junction positioning device comprises a first turnout positioning limit switch 20, a second turnout positioning limit switch 30, a first turnout reverse limit switch 40 and a second turnout reverse limit switch 50. Wherein, first switch location limit switch 20, second switch location limit switch 30, first switch counterpoint limit switch 40, second switch counterpoint limit switch 50 can include a plurality of limit switch respectively, only use first switch location limit switch 20, second switch location limit switch 30, first switch counterpoint limit switch 40, second switch counterpoint limit switch 50 to include a limit switch in this disclosure for the example explain.
The first turnout positioning limit switch 20 and the second turnout positioning limit switch 30 are both arranged on a preset positioning ground and are closed when the turnout is in a positioning locking state. The first turnout reverse position limit switch 40 and the second turnout reverse position limit switch 50 are both arranged on a preset reverse position ground and are used for being closed when the turnout locking state is a reverse locking state.
As shown in fig. 1, the system may further include: a first control device 60 and a second control device 70. The first control device 60 is connected to the first turnout positioning limit switch 20, the first turnout reversal limit switch 40, and the N first locking limit switches, and is configured to generate corresponding first position signals according to the switching states of the first turnout positioning limit switch 20, the first turnout reversal limit switch 40, and the N first locking limit switches.
The second control device 70 is connected to the second switch positioning limit switch 30, the second switch reverse limit switch 50 and the N second locking limit switches, respectively, and is configured to generate corresponding trigger signals according to the switching states of the second switch positioning limit switch 30, the second switch reverse limit switch 50 and the N second locking limit switches.
The first control device 60 is further configured to be connected to the second control device 70, and configured to generate a corresponding second position signal according to the trigger signal generated by the second control device 70, and determine the position information of the switch according to the first position signal and the second position signal.
In the disclosure, first, the first control device may generate a corresponding first position signal according to the switch states of the first turnout positioning limit switch, the first turnout inversion limit switch and the N first locking limit switches, and the first position signal is used for indicating whether the turnout is positioned or inverted. Meanwhile, the second control device can also generate corresponding trigger signals according to the switch states of the second turnout positioning limit switch, the second turnout inversion limit switch and the N second locking limit switches, then the second control device sends the trigger signals to the first control device, so that the first control device generates corresponding second position signals based on the trigger signals, the second position signals are also used for representing whether the turnout is positioned or inverted, and finally the first control device determines the position of the turnout according to the first position signals and the second position signals. Like this, according to above-mentioned mode, can be with setting up the limit switch signal on the switch divide into two the tunnel, the limit switch signal of the same way directly obtains first position signal through first controlling means processing, another way limit switch signal is handled through first controlling means after second controlling means earlier and is obtained second position signal, afterwards, according to first position signal and second position signal, confirm the position information of switch, so, confirm the position of switch through the comparison of two return circuits signal, thereby can reduce because of one of them signal return circuit appears unusually leading to the false retrieval to the switch position, improve the degree of accuracy that detects the switch position, guarantee the safety that the train traveles in the switch.
Optionally, the first control device 60 is configured to determine the position information of the switch when the first position signal and the second position signal coincide.
Specifically, as described above, the first position signal includes a first position location signal and a first flip position signal, and the second position signal includes a second position location signal and a second flip position signal. The first control device 60 is configured to generate the first positioning position signal when the switching states of the first turnout positioning limit switch 20 and the N first locking limit switches are both the closed states, and generate the first reverse position signal when the switching states of the first turnout reverse position limit switch 40 and the N first locking limit switches are both the closed states. The second control device 70 is configured to generate a trigger signal indicating that the switch positions are in place when the switch states of the second switch positioning limit switch 30 and the N second locking limit switches are both closed states, and generate a trigger signal indicating that the switch positions are in place when the switch states of the second switch reversing limit switch 50 and the N second locking limit switches are both closed states.
Correspondingly, the first control device 60 is further configured to generate a second positioning position signal when receiving the trigger signal generated by the second control device 70 and indicating that the switch is positioned in place, and determine that the switch is positioned when the first position signal is the first positioning position signal, and generate a second flipping position signal when receiving the trigger signal generated by the second control device 70 and indicating that the switch is flipped in place, and determine that the switch is flipped when the first position signal is the first flipping position signal.
In practical application, when a turnout is in fault, for example, when the turnout arrives at a fixed position, one of the first turnout positioning limit switch and the second turnout positioning limit switch is not normally closed, which may cause inconsistency between the first position signal and the second position signal, therefore, in the disclosure, in order to facilitate a user to timely know that the turnout is in fault, the system may further include an alarm device. Specifically, the first control device 60 is connected to the alarm device, and is configured to control the alarm device to output alarm information to prompt the user that the turnout is abnormal when the first position signal is inconsistent with the second position signal. Wherein, the alarm communication device can be at least one of an acoustic alarm device, an optical alarm device and an acousto-optic alarm device. The present disclosure does not specifically limit this.
Therefore, when a first position signal determined according to the switching conditions of the first turnout positioning limit switch, the first turnout inversion limit switch and the N first locking limit switches is consistent with a second position signal determined according to the switching conditions of the second turnout positioning limit switch, the second turnout inversion limit switch and the N second locking limit switches, the first control device determines the position of the turnout so as to improve the accuracy of turnout position detection. When the first position signal is inconsistent with the second position signal, the alarm device is controlled to output an alarm signal, so that a user can know that the turnout is in failure in time, and the intellectualization of turnout position detection is improved.
The switch position detection system provided by the present disclosure is described below in a complete embodiment.
The first control device 60 may be a programmable logic controller PLC and the second control device 70 includes a plurality of safety relays. The PLC is respectively connected with the first turnout positioning limit switch, the first turnout reverse position limit switch and the N first locking limit switches through N +2 pins;
a coil of the safety relay KA1 is connected with the second turnout positioning limit switch and is used for being electrified when the second turnout positioning limit switch is closed to trigger the normally open contact of the safety relay KA1 to be closed; a coil of the safety relay KA2 is connected with the N second locking limit switches and is used for being electrified when the N second locking limit switches are closed to trigger the normally open contact of the safety relay KA2 to be closed; a coil of the safety relay KA3 is connected with a normally open contact of the safety relay KA1 and a normally open contact of the safety relay KA2, and is used for electrifying when the normally open contact of the safety relay KA1 and the normally open contact of the safety relay KA2 are both closed to generate a trigger signal for triggering the normally open contact of the safety relay KA3 to be closed; a coil of the safety relay KA4 is connected with the second turnout reverse position limit switch and used for being electrified when the second turnout reverse position limit switch is closed to trigger the normally open contact of the safety relay KA4 to be closed; a coil of the safety relay KA5 is connected with a normally open contact of the safety relay KA2 and a normally open contact of the safety relay KA4, and is used for electrifying when the normally open contact of the safety relay KA2 and the normally open contact of the safety relay KA4 are both closed to generate a trigger signal for triggering the normally open contact to be closed;
the PLC is also connected with a normally open contact of the safety relay KA3 and a normally open contact of the safety relay KA5 through two input pins respectively, and is used for generating a corresponding second position signal according to the triggering signal sent by the safety relay KA3 or the safety relay KA5 and used for triggering the normally open contact to be closed.
First, a specific embodiment in which the first control device generates the first position signal will be described.
For example, as shown in fig. 2, it is assumed that the number of the locking devices is four, and the four first locking limit switches are SQ1, SQ2, SQ3 and SQ4, the first fork positioning limit switch is SQ5, and the first fork flip limit switch is SQ 6. The PLC can be connected to SQ1, SQ2, SQ3, SQ4, SQ5 and SQ6 through six input pins, respectively. Specifically, as shown IN fig. 3, SQ1 is connected to an input pin IN0 of the PLC, SQ2 is connected to an input pin IN1 of the PLC, SQ3 is connected to an input pin IN2 of the PLC, SQ4 is connected to an input pin IN3 of the PLC, SQ5 is connected to an input pin IN4 of the PLC, and SQ6 is connected to an input pin IN5 of the PLC. IN this way, when SQ1 to SQ5 are all IN the closed state, a closing signal can be input into the PLC through the input pins IN0 to IN 4. Thus, the PLC may generate the first seating position signal when it detects that the switch-on signal is input to its input pins IN0 through IN4, and may generate the first inversion position signal when it detects that the switch-on signal is input to its input pins IN0 through IN3 and IN 5.
Next, a specific embodiment in which the second control device generates a corresponding trigger signal and the first control device generates the second position signal based on the trigger signal will be described.
Assuming that the number of locking devices is still four and that the four second locking limit switches are SQ7, SQ8, SQ9 and SQ10 respectively, the second switch positioning limit switch is SQ11 and the second switch reverse limit switch is SQ12, the second control device may comprise five safety relays KA1-KA 5. As shown in fig. 2, the safety relay KA1 is connected with SQ11 and is used for triggering the closing of a normally open contact of the second turnout positioning limit switch SQ11 when the second turnout positioning limit switch SQ11 is closed; the safety relay KA2 is connected with the SQ7, the SQ8, the SQ9 and the SQ10 and is used for triggering the normally open contacts to be closed when the SQ7-SQ10 are closed; the safety relay KA3 is connected with the safety relay KA1 and the safety relay KA2 and is used for generating a trigger signal for triggering the normally open contacts of the safety relay KA1 and the safety relay KA2 to be closed when the normally open contacts are closed; the safety relay KA4 is connected with SQ12 and is used for triggering the normally open contact of the second turnout reverse position limit switch SQ12 to be closed; the safety relay KA5 is connected with the safety relay KA2 and the safety relay KA4 and is used for generating a trigger signal for triggering the normally open contacts of the safety relay KA2 and the safety relay KA4 to be closed when the normally open contacts are closed.
Specifically, as shown in fig. 4, the safety relay KA1 may be connected to SQ11 through its coil (the coil of the safety relay is represented by a rectangle in fig. 4), so that when SQ11 is closed, the coil of the safety relay KA1 is energized so that its normally open contacts are closed; the safety relay KA2 can be connected with SQ7, SQ8, SQ9 and SQ10 in series through a coil, so that when the SQ7, the SQ8, the SQ9 and the SQ10 are closed, the coil of the safety relay KA2 is electrified to trigger the normally open contact of the safety relay KA2 to be closed; a normally open contact of the safety relay KA1 is connected with a normally open contact of the safety relay KA2 and a coil of the safety relay KA3, so that when the normally open contact of the safety relay KA1 and the normally open contact of the safety relay KA2 are both closed, the coil of the safety relay KA3 is electrified, the normally open contact of the safety relay KA3 can be triggered to be closed, namely the safety relay KA3 generates a trigger signal for triggering the normally open contact of the safety relay KA3 to be closed; the safety relay KA4 can be connected with SQ12 through a coil, so that when SQ12 is closed, the coil of the safety relay KA4 is electrified to trigger the normally open contact of the safety relay to be closed; similarly, the normally open contact of safety relay KA2 and the normally open contact of safety relay KA4 are connected with the coil of safety relay KA5, so, when the normally open contact of safety relay KA2 and the normally open contact of safety relay KA4 are all closed, the normally open contact of safety relay KA5 is triggered in the coil circular telegram of safety relay KA5 to be closed, namely, safety relay KA5 generates a trigger signal for triggering the closing of the normally open contact.
As shown IN fig. 3, the normally open contact of the safety relay KA3 and the normally open contact of the safety relay KA5 are connected to input pins IN6 and IN7 of the PLC, respectively. The PLC is also used for generating a corresponding second position signal according to a trigger signal which is sent by the safety relay KA3 or the safety relay KA5 and triggers the normally open contact of the safety relay to be closed. It should be noted that the number of input pins of the PLC may be more than eight, and some input pins may be in an idle state.
For example, if the PLC detects that the input pin IN6 has a trigger signal for triggering the normally open contact of the safety relay KA3 to close, a second positioning position signal is generated according to the trigger signal; and if the PLC detects that the input pin IN7 has a trigger signal for triggering the normally open contact of the safety relay KA5 to be closed, generating a second reversal position signal according to the trigger signal.
Finally, a specific manner of determining the switch position information by the PLC will be explained.
As shown in FIG. 2, the system may also include a safety relay KA6 and a safety relay KA 7. Wherein, PLC links to each other with safety relay KA 6's coil and safety relay KA 7's coil respectively through two output pin for when the positional information of switch represents the switch and is located the location, control safety relay KA 6's coil circular telegram, closed with the normally open contact who triggers safety relay KA6, and, when the positional information of switch represents the switch and is located the reversal, control safety relay KA 7's coil circular telegram, closed with the normally open contact who triggers safety relay KA 7. Therefore, a user or a track manager can know the position information of the turnout through the closed states of the normally open contacts of the safety relay KA6 and the safety relay KA 7.
In addition, in order to avoid the situation that the normally open contacts of the safety relay KA6 and the safety relay KA7 are closed by mistake, in the present disclosure, as shown in fig. 2, the safety relay KA3 may be connected in series between the output pin of the PLC and the safety relay KA6, and the safety relay KA5 may be connected in series between the output pin of the PLC and the safety relay KA 7. Illustratively, as shown in fig. 5, the normally open contact of the safety relay KA3 is connected in series between the output pin OUT0 of the PLC and the coil of the safety relay KA6, and the normally open contact of the safety relay KA5 is connected in series between the output pin OUT2 of the PLC and the coil of the safety relay KA 7. It should be noted that there are a plurality of output pins of the PLC shown in fig. 5, and only the output pin OUT0 and the output pin OUT2 are used in the present disclosure, and the other output pins are in an idle state, and the output pins in the idle state may be connected to other devices, such as the alarm device (not shown in fig. 5) described above.
As described above, when safety relay KA 3's normally open contact was closed, the second position signal that PLC generated was the second locating position signal, and, be first locating position signal and when second position signal was the second locating position signal at first position signal, PLC control safety relay KA 6's coil circular telegram was closed in order to trigger its normally open contact, consequently, in this disclosure, establish ties above-mentioned safety relay KA 3's normally open contact between PLC's output pin and safety relay KA6 coil, so, only when safety relay KA 3's normally open contact was closed, PLC could control safety relay KA 6's normally open contact was closed. Similarly, the normally open contact of the safety relay KA5 is connected in series between the output pin of the PLC and the coil of the safety relay KA7, and only when the normally open contact of the safety relay KA5 is closed, the PLC can control the coil of the safety relay KA7 to be electrified so as to trigger the normally open contact to be closed. Therefore, the false closing condition of normally open contacts of the safety relay KA6 and the safety relay KA7 can be avoided, and the accuracy of detecting the turnout position is further improved.
It should be noted that the normally open contact of the safety relay is used in the disclosure for illustration, and those skilled in the art should understand that the normally closed contact of the safety relay may also be used in the switch position detection system provided in the disclosure, but the control strategy is slightly different. For example, if the safety relay KA1 is connected to the second switch positioning limit switch SQ11 through its normally closed contact, the set control strategy may be that the normally closed contact of the safety relay KA1 is opened when SQ11 is closed, and correspondingly, the normally closed contact of the safety relay KA3 is also opened, so that the PLC may receive a trigger signal for opening the normally closed contact through the input pin IN6, and the preset control strategy may be that the PLC receives a trigger signal for opening the normally closed contact through the input pin IN6, generates a second positioning position signal, and so on. The embodiment of detecting the position of the turnout by using the normally closed contact of the safety relay in the system is not described in detail herein.
Based on the same inventive concept, the present disclosure also provides a switch position detection method, as shown in fig. 6, which may include the following steps.
In step 61, obtaining the switch states of the first turnout positioning limit switch, the second turnout positioning limit switch, the first turnout reversal limit switch, the second turnout reversal limit switch, the N first locking limit switches and the N second locking limit switches;
in step 62, generating corresponding first position signals according to the switch states of the first turnout positioning limit switch, the first turnout reversal limit switch and the N first locking limit switches;
in step 63, generating corresponding second position signals according to the states of the second turnout positioning limit switch, the second turnout reverse position limit switch and the N second locking limit switches;
in step 64, position information of the switch is determined based on the first position signal and the second position signal.
Optionally, the determining the position information of the switch according to the first position signal and the second position signal includes:
judging whether the first position signal and the second position signal are consistent;
and if the first position signal is consistent with the second position signal, determining the position information of the turnout.
Optionally, the determining the position information of the turnout includes determining the position information of the turnout if the first position signal and the second position signal are consistent, where the determining the position information includes:
generating the first positioning position signal when the switching states of the first turnout positioning limit switch and the N first locking limit switches are both closed states, and generating the first reverse position signal when the switching states of the first turnout reverse position limit switch and the N first locking limit switches are both closed states;
generating a trigger signal for representing that the switch is in place when the switch states of the second turnout positioning limit switch and the N second locking limit switches are both closed states, and generating a trigger signal for representing that the switch is in place when the switch states of the second turnout reverse position limit switch and the N second locking limit switches are both closed states;
when the trigger signal representing the positioning in place is received, the second positioning position signal is generated, the turnout is determined to be positioned when the first position signal is the first positioning position signal, the second inversion position signal is generated when the trigger signal representing the inversion in place is received, and the turnout is determined to be inverted when the first position signal is the first inversion position signal.
Optionally, the method further comprises:
and when the first position signal is inconsistent with the second position signal, outputting alarm information to prompt a user that the turnout is abnormal.
The details of the steps in the above embodiments have been described in detail in relation to the embodiments of the system and will not be elaborated upon here.
Based on the same inventive concept, the present disclosure also provides a computer-readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of the switch position detection method.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A switch position detection system, comprising:
the turnout locking device comprises N locking devices, a first locking limiting switch and a second locking limiting switch, wherein the N locking devices are arranged on the turnout, each locking device comprises the first locking limiting switch and the second locking limiting switch, when the turnout is in a locking state, the N first locking limiting switches and the N second locking limiting switches are closed, and N is an integer greater than or equal to 1;
the first turnout positioning limit switch and the second turnout positioning limit switch are both arranged on a preset positioning ground and are used for being closed when the locking state is a positioning locking state;
the first turnout reverse position limit switch and the second turnout reverse position limit switch are both arranged on a preset reverse position ground and are used for being closed when the locking state is a reverse locking state;
the first control device is a Programmable Logic Controller (PLC), is respectively connected with the first fork positioning limit switch, the first fork reverse position limit switch and the N first locking limit switches, and is used for generating corresponding first position signals according to the switching states of the first fork positioning limit switch, the first fork reverse position limit switch and the N first locking limit switches;
the second control device comprises a plurality of safety relays which are respectively connected with the second turnout positioning limit switch, the second turnout reverse limit switch and the N second locking limit switches and used for generating corresponding trigger signals according to the switch states of the second turnout positioning limit switch, the second turnout reverse limit switch and the N second locking limit switches;
the first control device is further configured to be connected to the second control device, and configured to generate a corresponding second position signal according to a trigger signal generated by the second control device, and determine the position information of the turnout according to the first position signal and the second position signal.
2. The system of claim 1, wherein the first control device is further configured to determine position information of the switch when the first position signal and the second position signal coincide.
3. The system of claim 2, wherein the first position signal comprises a first position location signal and a first position reversal signal, and the second position signal comprises a second position location signal and a second position reversal signal;
the first control device is used for generating the first positioning position signal when the switch states of the first turnout positioning limit switch and the N first locking limit switches are both closed states, and generating the first reverse position signal when the switch states of the first turnout reverse position limit switch and the N first locking limit switches are both closed states;
the second control device is used for generating a trigger signal for representing that the switch is in place when the switch states of the second turnout positioning limit switch and the N second locking limit switches are both closed states, and generating a trigger signal for representing that the switch is in place when the switch states of the second turnout reversing limit switch and the N second locking limit switches are both closed states;
the first control device is used for generating the second positioning position signal when receiving the trigger signal for representing the positioning in place, determining that the turnout is positioned when the first position signal is the first positioning position signal, generating the second inversion position signal when receiving the trigger signal for representing the inversion in place, and determining that the turnout is positioned in the inversion when the first position signal is the first inversion position signal.
4. The system of claim 1,
the PLC is respectively connected with the first turnout positioning limit switch, the first turnout reverse position limit switch and the N first locking limit switches through N +2 pins;
a coil of the safety relay KA1 is connected with the second turnout positioning limit switch and used for being electrified when the second turnout positioning limit switch is closed to trigger the normally open contact of the safety relay KA1 to be closed;
a coil of the safety relay KA2 is connected with the N second locking limit switches and is used for being electrified when the N second locking limit switches are closed to trigger the normally open contact of the safety relay KA2 to be closed;
a coil of the safety relay KA3 is connected with a normally open contact of the safety relay KA1 and a normally open contact of the safety relay KA2, and is used for electrifying when the normally open contact of the safety relay KA1 and the normally open contact of the safety relay KA2 are both closed to generate a trigger signal for triggering the normally open contact of the safety relay KA3 to be closed;
a coil of the safety relay KA4 is connected with the second turnout reverse position limit switch and used for being electrified when the second turnout reverse position limit switch is closed to trigger a normally open contact of the safety relay KA4 to be closed;
a coil of the safety relay KA5 is connected with a normally open contact of the safety relay KA2 and a normally open contact of the safety relay KA4, and is used for electrifying when the normally open contact of the safety relay KA2 and the normally open contact of the safety relay KA4 are both closed to generate a trigger signal for triggering the normally open contact of the safety relay KA5 to be closed;
the PLC is also connected with the normally open contact of the safety relay KA3 and the normally open contact of the safety relay KA5 through two input pins respectively, and is used for generating a corresponding second position signal according to the triggering signal sent by the safety relay KA3 or the safety relay KA5 and used for triggering the normally open contact to be closed.
5. The system of claim 4, further comprising: safety relay KA6 and safety relay KA 7;
PLC through two output pin respectively with safety relay KA 6's coil with safety relay KA 7's coil links to each other, is used for the positional information sign of switch when the switch is located the location, control safety relay KA 6's coil circular telegram, in order to trigger safety relay KA 6's normally open contact is closed, and the positional information sign of switch when the switch is located the counterpoint, control safety relay KA 7's coil circular telegram, in order to trigger safety relay KA 7's normally open contact is closed.
6. The system of claim 5, characterized in that the normally open contact of the safety relay KA3 is connected in series between the output pin of the PLC and the coil of the full relay KA6, and the normally open contact of the safety relay KA5 is connected in series between the output pin of the PLC and the coil of the full relay KA 7.
7. The system of claim 1, further comprising: an alarm device;
and the first control device is connected with the alarm device and used for controlling the alarm device to output alarm information when the first position signal is inconsistent with the second position signal so as to prompt a user that the turnout is abnormal.
8. A turnout position detection method is characterized in that N locking devices are arranged on a turnout, and each locking device comprises a first locking limit switch and a second locking limit switch; the first turnout positioning limit switch and the second turnout positioning limit switch are arranged on a preset positioning ground; the first turnout reverse position limit switch and the second turnout reverse position limit switch are arranged on a preset reverse position ground; the method comprises the following steps:
acquiring the switching states of the first turnout positioning limit switch, the second turnout positioning limit switch, the first turnout reverse limit switch, the second turnout reverse limit switch, N first locking limit switches and N second locking limit switches;
generating corresponding first position signals by a first control device according to the switching states of the first turnout positioning limit switch, the first turnout reverse position limit switch and the N first locking limit switches, wherein the first control device is a Programmable Logic Controller (PLC);
generating corresponding trigger signals by a second control device according to the switch states of the second turnout positioning limit switch, the second turnout reverse limit switch and the N second locking limit switches, wherein the second control device comprises a plurality of safety relays;
and the first control device generates a corresponding second position signal according to the trigger signal, and determines the position information of the turnout according to the first position signal and the second position signal.
9. The method of claim 8, wherein determining the location information of the switch based on the first location signal and the second location signal comprises:
judging whether the first position signal and the second position signal are consistent;
and if the first position signal is consistent with the second position signal, determining the position information of the turnout.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as claimed in claim 8 or 9.
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| CN201910810532.4A CN112441069B (en) | 2019-08-29 | 2019-08-29 | Turnout position detection system, method and readable storage medium |
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| US7946538B1 (en) * | 2009-12-09 | 2011-05-24 | Donald Coy Beaman | External point spring locking device |
| CN103587553B (en) * | 2013-10-17 | 2015-10-28 | 上海亨钧科技有限公司 | A kind of control of hydraulic switches and expression system |
| JP6719194B2 (en) * | 2014-11-15 | 2020-07-08 | 日本信号株式会社 | Lock deviation detector and lock deviation detection method |
| CN206589904U (en) * | 2016-12-30 | 2017-10-27 | 比亚迪股份有限公司 | The trouble position information detection systems that clear the way more |
| CN107891884B (en) * | 2017-09-20 | 2020-03-20 | 浙江众合科技股份有限公司 | Full-electronic switch position detection device |
| CN107826143A (en) * | 2017-12-05 | 2018-03-23 | 北京和利时***工程有限公司 | A kind of all-electronin track switch control module |
| CN108032870A (en) * | 2017-12-06 | 2018-05-15 | 南京恩瑞特实业有限公司 | Track switch control module and its all-electronic implementation method |
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