Switch machine representation information digitization device

Abstract

Disclosed in the present invention is a switch machine representation information digitization device, relating to the technical field of switch machine functional components. A plurality of state identification parts are used for performing reciprocating motion within a preset range along with the switching of a turnout so as to reflect the position state of turnout switch rails; a group of position detection sensors is disposed on each of two sides of each state identification part so as to detect whether the position detection sensors are close to a corresponding state identification part and determine the position of the state identification part; the groups of position detection sensors are electrically connected to a state detection unit, and the state detection unit is used for obtaining position information of each state identification part outputted by each group of position detection sensors, and encoding the position information to obtain digitized switch machine representation information. By directly obtaining and transmitting digitized position information of each state identification part, the present invention simplifies the collection of and transmission circuit of representation information, reduces the interference rate and the fault rate, and improves the transmission accuracy of representation information.

Description

A digital device for displaying information of switch machine Technical Field

[0001] The present application relates to the technical field of switch machine functional components, and in particular to a device for digitizing switch machine information. Background Art

[0002] Generally, turnout machines are key infrastructure equipment for railways and rail transit. One of their key safety functions is to use display information to feedback the position status of the turnout. The interlocking system determines the display information of the signal machine based on the display information of the turnout machine, thereby realizing the control relationship between the turnout, route and signal machine.

[0003] In the prior art, as a turnout is switched, an automatic switch is typically used within the switch machine to automatically connect or disconnect the motor circuit and the indicator circuit. The switch indication information of the automatic switch accurately reflects the different stages of the turnout. Therefore, the automatic switch indication information is typically reflected by a circuit signal indicating the regular connection or disconnection of the indicating contacts in the indicating circuit. The circuit signal indicating the connection or disconnection of the contacts requires the energization of a reverse position indicating relay or a position indicating relay for transmission.

[0004] However, the existing analog circuits for information signal transmission contain many devices, have long transmission lines, are susceptible to interference in electrical signal transmission, and are time-consuming to troubleshoot. Switch circuit failures account for a very high proportion of railway signal failures, and the transmission accuracy of information is low, seriously affecting railway transportation efficiency. Summary of the Invention

[0005] Based on this, it is necessary to provide a switch machine information digitization device to address the above technical problems.

[0006] This manual adopts the following technical solutions:

[0007] This specification provides a device for digitizing switch machine information, including:

[0008] Multiple state identification parts are used to reciprocate within a preset range as the switch is switched to reflect the different processes and states of the switch switching;

[0009] Multiple sets of position detection sensors, one set of position detection sensors is provided on both sides of each state identification component, each set of position detection sensors is used to detect the distance between itself and the corresponding state identification component and output digital position information of the corresponding state identification component; wherein, when the state identification component moves toward the corresponding position detection sensor to a preset approach threshold or moves away from the corresponding position detection sensor to a preset distance threshold, first position information is output; otherwise, second position information is output;

[0010] The state detection unit is electrically connected to each group of position detection sensors and is used to respectively obtain the position information of each state identification component output by each group of position detection sensors, and encode each position information to obtain digital switch machine representation information.

[0011] Optionally, the plurality of state identification parts include: a left state identification part and a right state identification part;

[0012] When the switch locking mechanism is in different states of pulled-in locking, switching, and extended locking, the left state identification part and the right state identification part move to the corresponding preset positions respectively, and are controlled by the indicating rod connected to the switch in the pulled-in locking and extended locking states. If the indicating rod does not move into place, the left state identification part and the right state identification part cannot move to the preset positions corresponding to the pulled-in locking and extended locking states respectively.

[0013] Optionally, the multiple groups of position detection sensors include: four groups of position detection sensors;

[0014] The first group of position detection sensors and the second group of position detection sensors are arranged on both sides of the left state identification part, and are used to determine the position of the left state identification part;

[0015] The third group of position detection sensors and the fourth group of position detection sensors are arranged on both sides of the right state identification part and are used to determine the position of the right state identification part.

[0016] Optionally, when the state identification part moves toward the corresponding position detection sensor to a preset proximity threshold, the corresponding position detection sensor switches from outputting the second position information to outputting the first position information; when the state identification part moves away from the corresponding position detection sensor to a preset distance threshold, the corresponding position detection sensor switches from outputting the first position information to outputting the second position information;

[0017] Among them, the first position information represents that the position detection sensor can detect its corresponding state identification part, and the corresponding state identification part is within a preset range close to it; the second position information represents that the position detection sensor cannot detect its corresponding state identification part, and the corresponding state identification part is within a preset range far away from it.

[0018] Optionally, the first position information and the second position information output by the position detection sensor are digital quantities or analog quantities;

[0019] When the first position information and the second position information are digital quantities, the state detection unit encodes the digital quantities to obtain digital switch machine representation information;

[0020] When the first position information and the second position information are analog quantities, the state detection unit samples the analog quantities in real time, performs analog-to-digital conversion, and then encodes them to obtain digital switch machine representation information.

[0021] Optionally, when the state detection unit encodes the first position information and the second position information, a binary number "1" corresponds to the first position information and a binary number "0" corresponds to the second position information; or,

[0022] The binary number "0" corresponds to the first position information, and the binary number "1" corresponds to the second position information; or,

[0023] The first position information is corresponding to the preset multi-bit binary number arrangement, and the second position information is corresponding to the bit-by-bit inversion result of the preset multi-bit binary number arrangement.

[0024] Optionally, the state detection unit arranges the code sequence of each position information in a positive order from the first group of position detection sensors to the fourth group of position detection sensors to obtain digital switch machine representation information; or,

[0025] The state detection unit arranges the code sequence of each position information in the reverse order from the fourth group of position detection sensors to the first group of position detection sensors to obtain digital switch machine representation information; or,

[0026] The position information is arranged in a code sequence according to a preset arrangement order to obtain digital switch machine representation information.

[0027] Optionally, each group of position detection sensors includes a plurality of position detection sensors;

[0028] Each group of position detection sensors uses the majority voting result of the respective outputs of the plurality of position detection sensors as the output of each group of position detection sensors; or

[0029] The state detection unit obtains the position information output by each position detection sensor, and for each group of position detection sensors, uses the majority voting result of the outputs of the plurality of position detection sensors contained therein as the output of the group of position detection sensors.

[0030] Optionally, the status detection unit is further used to perform validity detection on the encoded switch representation information based on multiple preset valid switch information, and to issue an alarm when the encoded switch representation information is invalid, wherein the multiple preset valid switch information correspond to different processes of turnout conversion.

[0031] Optionally, the status detection unit is also used to obtain the generation time information when the switch representation information is generated or its effective deadline information, the switch information to which the switch representation information belongs, and the turnout information to which the switch representation information belongs, and respectively add the preset positions relative to the switch representation information to form the final digitized switch representation information.

[0032] Optionally, the status detection unit is also used to use the encoded switch machine representation information as the current representation information, and determine whether the previous representation information of the current representation information to the current representation information meets the preset effective switch conversion. If so, the current representation information is output, wherein the previous representation information is different from the current representation information.

[0033] At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects:

[0034] Multiple state identification parts are used to reciprocate within a preset range as the switch is switched to reflect the position status of the switch point rail. A group of position detection sensors are provided on both sides of each state identification part to detect whether it is close to the corresponding state identification part and determine the position of the state identification part. Each group of position detection sensors is electrically connected to the state detection unit. The state detection unit is used to respectively obtain the position information of each state identification part output by each group of position detection sensors, and encode each position information to obtain digital switch machine representation information.

[0035] The present invention uses a position detection sensor to directly detect the moving position of each state identification part to obtain the position information of each state identification part. The position information of each state identification part can be encoded and directly transmitted subsequently, which simplifies the collection and transmission circuit of the switch machine indication information, reduces the interference rate and failure rate, and improves the transmission accuracy of the switch machine indication information, thereby improving the railway transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0037] FIG1 is a schematic diagram of a device for digitizing switch machine information provided in this specification;

[0038] FIG2 is a schematic diagram of a state identification component motion detection provided in this specification;

[0039] FIG3 is a schematic diagram of data flow in a switch machine information digitization device provided in this specification. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of this specification more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this specification and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] At present, the existing analog circuits for information signal transmission contain many devices, have long transmission lines, are susceptible to interference in electrical signal transmission, and are time-consuming to troubleshoot. Switch circuit failures account for a very high proportion of railway signal failures.

[0042] For example, if the state identification component in an automatic switch fails to make contact with the contacts, even if the status identification component has swung to the appropriate position, the signal displayed by the switch will not correspond to it. Another example is that because the circuit signal transmission path for display information involves multiple devices, if some of them malfunction, it will take a long time to troubleshoot the problem. Therefore, a device for digitizing switch display information is urgently needed to simplify the acquisition and transmission of display information.

[0043] The following describes in detail the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0044] FIG1 is a schematic diagram of a switch machine information digitization device in this specification, as can be seen from FIG1 , comprising:

[0045] Multiple state identification components 100 are configured to reciprocate within a preset range as the switch is switched. For example, they may swing back and forth or translate back and forth to reflect the different stages of the switch switching. The state identification component 100 is a component within the switch that directly reflects the changes in the switch switching, locking, and unlocking states. It can correspond to the unlocking, switching, contacting, locking, and other states of the switch. For example, the contact frame that mounts the moving contact or the control component that controls the contact switching in an existing switch typically swings within a certain angle range or translates back and forth within a certain stroke. The state identification component is typically a component within the switch indication mechanism or is controlled by the switch indication mechanism. When the switch locking mechanism is in the different states of retracted locking, switching, and extended locking, the state identification component moves to a specified position respectively. In the retracted locking and extended locking states, it is controlled by the indicator rod connected to the switch. If the indicator rod has not moved into place, the state identification component cannot move to the specified position corresponding to the retracted locking and extended locking states.

[0046] Multiple sets of position detection sensors 200 are provided on both sides of each state identification component 100. These sensors 200 are used to detect the distance between themselves and the corresponding state identification component 100 and output the position information of the corresponding state identification component 100. The position detection sensors can be contact sensors or proximity sensors, depending on the needs and not limited in this specification.

[0047] Specifically, in one or more embodiments of the present specification, the position detection sensor 200 may represent the position of the corresponding state identification component 100 through a digital value or an analog value.

[0048] If the position detection sensor 200 outputs a digital quantity to represent the position of the state identification part 100, the state identification part 100 outputs the first position information when it moves toward the corresponding position detection sensor 200 to a preset proximity threshold or moves away from the corresponding position detection sensor 200 to a preset distance threshold, otherwise it outputs the second position information.

[0049] Of course, the position detection sensor 200 can continuously detect the distance between it and the corresponding state identification part in real time, output information related to the distance, and output information state changes when the distance decreases to approach the threshold and increases to move away from the threshold.

[0050] Specifically, when the state identification part 100 moves toward the corresponding position detection sensor 200 to a preset proximity threshold, the corresponding position detection sensor 200 switches from outputting the second position information to outputting the first position information. Thereafter, the state identification part 100 continues to move in the same direction to the extreme position, and the corresponding position detection sensor 200 continues to output the first position information.

[0051] When the status identification component 100 moves away from the corresponding position detection sensor 200 to a predetermined distance threshold, the corresponding position detection sensor 200 switches from outputting the first position information to outputting the second position information. The status identification component 100 then continues to move in the same direction to the limit position, and the corresponding position detection sensor 200 continues to output the second position information.

[0052] Each position detection sensor 200 has a preset proximity threshold and a preset distance threshold relative to each state identification component 100. The preset distance threshold is located farther from the position detection sensor than the preset proximity threshold, as shown in FIG2 .

[0053] Figure 2 is a schematic diagram of motion detection of a state identification part in this specification. The position of the state identification part is not shown in the figure, but the state identification part reciprocates within the range of R4. For the position detection sensor on the left, when the state identification part is within the range of R1, the position detection sensor outputs the first position information, and when the state identification part is within the range of R3, the position detection sensor outputs the second position information.

[0054] When the status identification component is within range R2, the position detection sensor's output is related to the range the status identification component was in before entering R2. The output of the position detection sensor remains consistent with the range it was in before entering R2. For example, if the status identification component was within range R1 before entering R2, the output remains within R1. If the status identification component was within range R3 before entering R2, the output remains within R3. The right position detection sensor operates similarly to the left and will not be further described.

[0055] Among them, the first position information indicates that the position detection sensor can detect its corresponding state identification part, and the corresponding state identification part is within a preset range close to it; the second position information indicates that the position detection sensor cannot detect its corresponding state identification part, and the corresponding state identification part is within a preset range far away from it.

[0056] The first and second position information output by the position detection sensor 200 can be digital or analog. If the position detection sensor 200 outputs an analog quantity to represent the position of the status identification component 100, the position detection sensor 200 can output different level values ​​corresponding to the first and second position information, respectively, in accordance with the principles shown in FIG2 , or other values ​​corresponding to the first and second position information, respectively, or information related to the distance of the position sensor. In this case, the status detection unit 300 can obtain the analog quantity output by the position detection sensor 200, sample the analog quantity in real time, perform analog-to-digital conversion, and then determine whether the position detection sensor 200 can detect the corresponding status identification component 100 based on a preset threshold, thereby encoding the analog quantity into a digital quantity.

[0057] In one or more embodiments of the present specification, the state identification part 100 may include a left state identification part 101 and a right state identification part 102, so that the two state identification parts respectively reflect the different processes of the switch connected to the switch during the conversion process, specifically reflecting the position status of the point rails on both sides of the switch or the position status of the movable heart rail.

[0058] Accordingly, in one or more embodiments of the present specification, the plurality of position detection sensor groups 200 may include four position detection sensor groups. As shown in FIG1 , a first position detection sensor group 201 and a second position detection sensor group 202 may be provided on the left and right sides of the left state identification component 101, respectively, to determine the position of the left state identification component 101. Similarly, a third position detection sensor group 203 and a fourth position detection sensor group 204 may be provided on the left and right sides of the right state identification component 102, respectively, to determine the position of the right state identification component 102.

[0059] Furthermore, in one or more embodiments of the present specification, to prevent false detections caused by a single position detection sensor due to unexpected factors, each group of position detection sensors 200 may include three position detection sensors, forming a three-choose-two configuration. Each group of position detection sensors 200 uses the majority vote of the three position detection sensors' respective outputs as the output of each group of position detection sensors 200. This further improves the accuracy of the position detection sensors' output of the position information of the status identification component 100. Of course, in actual applications, each group of position detection sensors may include multiple position detection sensors. The specific number can be determined as needed and is not limited in this specification. Preferably, each group of position detection sensors may include an odd number of position detection sensors.

[0060] As shown in Figure 2, each state identification component 100 has the following possible states: centered, moved to the left, and moved to the right. When the state identification component 100 is centered, the position detection sensors 200 on its left and right sides cannot detect the state identification component 100. When the state identification component 100 moves to the left and the distance from the left position detection sensor equals a preset proximity threshold, the position detection sensor 200 on its left side can detect the state identification component 100. When the state identification component 100 moves away from the left position detection sensor to a distance equal to the preset distance threshold, the position detection sensor 200 on its left side cannot detect the state identification component 100.

[0061] Corresponding to the effective position conversion of the switch rail in the turnout conversion, the effective conversion of the switch machine mechanical structure can be determined, thereby obtaining the schematic diagram of the normal output information of the four groups of position detection sensors shown in Table 1.

[0062] Table 1 Schematic diagram of normal output information of four groups of position sensors

[0063] The state detection unit 300 is electrically connected to each group of position detection sensors, and is used to respectively obtain the position information of each state identification component output by each group of position detection sensors, and encode each position information to obtain digital switch machine representation information.

[0064] Therefore, the state detection unit 300 may encode the position information of the state identification component 100 detected by each position sensor 200 in a binary number, thereby digitally encoding and outputting the position information.

[0065] In one or more embodiments of this specification, the state detection unit 300 may encode the first position information with a binary number "1" corresponding to the first position information and the second position information with a binary number "0" corresponding to the second position information. Corresponding to the embodiment of Table 1 above, the state detection unit 300 may obtain the first position information or the second position information output by each group of position detection sensors and encode it to obtain the four-bit binary codes shown in Table 2 below. Table 2 is a schematic table of four groups of position sensor output information corresponding to a four-bit binary number in this specification.

[0066] Table 2 Schematic diagram of four groups of position sensor output information corresponding to four-bit binary numbers

[0067] For example, in one or more embodiments of the present specification, the state detection unit 300 may arrange the position information in a positive order from the first group of position detection sensors 201 to the fourth group of position detection sensors 204 to obtain digital switch machine representation information, as shown in Table 2 above. Alternatively, the state detection unit 300 may arrange the position information in a reverse order from the fourth group of position detection sensors 204 to the first group of position detection sensors 201 to obtain digital switch machine representation information, that is, encode the four-bit binary numbers in reverse order as shown in Table 2 above, or may arrange the position information in another preset order to obtain digital switch machine representation information.

[0068] Furthermore, in one or more embodiments of the present specification, the state detection unit 300 may also use the switch machine representation information obtained by encoding the position information of each state identification part 100 output by each group of position detection sensors 200 as the current representation information, and determine whether the switch from the previous representation information of the current representation information to the current representation information complies with or corresponds to the preset effective switch conversion. If so, it means that the current representation information is correct and the current representation information can be output. If not, it means that the current representation information is incorrect, and there may be a fault or transmission error, and fault information can be output.

[0069] In other words, the state detection unit 300 can determine the rationality of changes in digital representation information. Based on the sequential nature of the switch machine's operating process and state changes, it lists all reasonable information from the valid information of each set of position detection sensors in a fixed sequence to the next valid information, that is, the previous representation information is different from the current representation information. When the representation information output by each set of position detection sensors in a fixed sequence changes, it is compared with all the reasonable information listed. If the change is not reasonable, the representation information is not output and an alarm is issued.

[0070] The corresponding relationship between the current state corresponding to the current representation information and the previous state corresponding to the previous representation information is shown in Table 3. Table 3 is a schematic table of the matching relationship between the current state and the previous state in this specification.

[0071] Table 3 Schematic diagram of the matching relationship between the current state and the previous state

[0072] Correspondingly, this specification also provides a schematic diagram of the matching relationship of digital representation information represented by "1" and "0", as shown in Table 4. Table 4 is a schematic table of the matching relationship between current representation information and previous representation information in this specification.

[0073] Table 4 Schematic diagram of the matching relationship between the current representation information and the previous representation information

[0074] In one or more embodiments of the present specification, the validity of the current representation information may be first checked. That is, when the information is digitally represented by "1" or "0," the current representation information may be checked against the valid codes shown in Table 2 to determine whether it corresponds to one of the codes. If not, the current representation information is invalid, and a fault message may be output. Specifically, using Table 2 as an example, the valid codes shown in Table 2 may be used as preset valid switch information, and the encoded switch representation information may be checked for validity. If the encoded switch representation information is invalid, an alarm may be issued. Multiple preset valid switch information correspond to different stages of the switch switching process.

[0075] If a valid code is found in Table 2, the conversion validity can be further verified based on the previous representation of the current information. Continuing with the example of digital information representation, Table 4 can be used to determine whether a valid conversion has been made from the previous representation to the current information. If so, the current representation is a valid code that complies with the conversion rules, and the current switch information can be output. If a valid conversion is not found, the current representation does not comply with the conversion rules, and a fault message can be output. This two-step verification fully determines whether there has been interference or equipment failure during the transmission of the current representation, improving the accuracy of the information transmission.

[0076] That is to say, the status detection unit 300 can judge the validity of the digital representation information obtained by encoding, list all valid information according to the correct information of each group of position detection sensors in a fixed order corresponding to the different processes and states of the switch machine, and compare and detect the information of each group of position detection sensors in a fixed order with the valid information of each group of position detection sensors in a fixed order. When the digital representation information obtained by encoding the information of each group of position detection sensors in a fixed order is not valid information, the representation information cannot be output and an alarm is issued.

[0077] Based on the switch machine representation information digitization device shown in Figure 1, multiple state identification parts are used to swing within a preset range as the switch is switched to reflect the position status of the switch point rail. Two groups of position detection sensors are set on both sides of each state identification part to detect whether it is close to the corresponding state identification part and determine the position of the state identification part. Each group of position detection sensors is electrically connected to the state detection unit. The state detection unit is used to respectively obtain the digital position information of each state identification part output by each group of position detection sensors, and encode it to obtain digital switch machine representation information.

[0078] The present invention uses a position detection sensor to directly detect the moving position of each state identification part to obtain the position information of each state identification part. Subsequently, the digital position information of each state identification part can be encoded and directly transmitted, which simplifies the collection and transmission circuit of the representation information, reduces the interference rate and failure rate, and improves the transmission accuracy of the representation information, thereby improving the efficiency of railway transportation.

[0079] Furthermore, if only one binary digit is used to indicate whether each set of position detection sensors 200 can detect the state identification component 100, a device failure or transmission failure may cause the original four-digit binary digit to be mistakenly changed to another four-digit binary digit in a simple manner, thereby causing a subsequent misjudgment of the switch switching situation. For example, "0000" can be changed to "0001" by changing only the last digit, or to "1000" by changing only the first digit. For another example, "1001" can be changed to "1000" by changing only the last digit, and so on.

[0080] In one or more embodiments of the present specification, the state detection unit 300 may encode and represent the first position information or the second position information output by the four sets of position detection sensors 200 using a predetermined multi-bit binary number arrangement. Specifically, the predetermined multi-bit binary number arrangement corresponds to the first position information, and the bit-by-bit inversion of the predetermined multi-bit binary number arrangement corresponds to the second position information. In other words, the multi-bit binary number may be used to indicate whether each set of position detection sensors 200 can detect the state identification component 100.

[0081] For example, using two binary digits, the state detection unit 300 can correspond to the first position information as "11" and the second position information as "00." This corresponds to the representation in Table 2, resulting in the four sets of position sensor output information corresponding to the eight-bit binary digits shown in Table 5.

[0082] Table 5 Schematic diagram of four sets of position sensor output information corresponding to eight-bit binary numbers

[0083] As can be seen from Table 5, compared to Table 2, more binary bits need to be changed when erroneously changing from one valid code to another, or when converting from an invalid code to a valid code. Clearly, the probability of changing multiple bits to a valid code is much lower than the probability of changing only one bit. Representing the position sensor output information using multiple binary digits further improves the accuracy of digitally represented information transmission. Of course, the above is merely an example. In actual applications, the selection of several binary digits to represent the position sensor output information, as well as the binary digit arrangement used to indicate the detection or non-detection of the status identification component, can be determined as needed and are not limited in this specification.

[0084] Correspondingly, when represented by two binary digits, each group of position detection sensors 200 may also include multiple position detection sensors, and the majority voting result of each position detection sensor included in each group is used as the output result of the group of position detection sensors 200, so as to further improve the accuracy of obtaining the representation information.

[0085] Table 6 Schematic diagram of the correspondence between the current information and the previous information under eight-bit binary numbers

[0086] At the same time, before outputting the encoded switch indication information, the status detection unit 300 can also determine whether the current indication information matches the previously recorded indication information, based on the matching relationship between the current indication information and the previously recorded indication information. If so, the current switch indication information is output. This is shown in Table 6. Table 6 is a schematic table of the correspondence between the current indication information and the previously recorded indication information in an eight-bit binary format, as used in this specification. By combining various embodiments, the accuracy of acquiring and transmitting switch indication information can be improved in various ways.

[0087] Furthermore, in one or more embodiments of the present specification, the state detection unit 300 may digitally represent the first position information or the second position information output by the four sets of position detection sensors 200 using a preset arrangement of multi-bit binary numbers. For ease of description, the letters "A" and "B" are used to represent the arrangement of the preset multi-bit binary numbers, corresponding to the first position information and the second position information, respectively. The multi-bit binary numbers represented by "A" and "B" are the result of bit-by-bit inversion of each other. Of course, the specific arrangement of the preset multi-bit binary numbers can be determined as needed and is not limited by this specification.

[0088] Corresponding to the representation method in Table 2 above, a schematic table of four sets of position sensor output information corresponding to multi-bit binary numbers represented by letters as shown in Table 7 can be obtained.

[0089] Table 7 Schematic diagram of four groups of position sensor output information corresponding to multi-bit binary numbers represented by letters

[0090] At the same time, before outputting the encoded switch indication information, the status detection unit 300 may also determine whether the current indication information matches the previously recorded indication information, based on the matching relationship between the current indication information and the previously recorded indication information. If so, the current switch indication information is output. This is shown in Table 8. Table 8 is a schematic table illustrating the correspondence between the current indication information and the previously recorded indication information for a multi-digit binary number represented by an alphabetical character in this specification. By combining various embodiments, the accuracy of acquiring and transmitting switch indication information can be improved in various ways.

[0091] Table 8 Schematic diagram of the correspondence between the current information and the previous information under the multi-bit binary number represented by letters

[0092] Of course, the above is only an exemplary representation of a multi-digit binary number represented by a letter. In actual applications, how many binary digits are selected to represent the output information of the position sensor, and what kind of binary number arrangement is used to represent whether the status identification part can be detected or not, can all be determined according to needs, and this manual does not impose any restrictions on this.

[0093] In one or more embodiments of the present specification, when determining whether the switch from the previous representation information of the current representation information to the current representation information complies with the preset valid switch transition, the state detection unit 300 may first read the digital switch machine representation information at the previous moment, store it, and mark it as the previous representation information, then read the digital switch machine representation information at the current moment, store it, and mark it as the current representation information, then compare whether the previous representation information and the current representation information are the same. If they are the same, the digital switch machine representation information at the next moment is read until it is different from the previous representation information. Then, it is determined whether the switch from the previous representation information of the current representation information to the current representation information complies with the preset valid switch transition. If it is, the current representation information is stored, marked as the previous representation information, and read again. If it is not, it is determined that the current digital switch machine representation information is incorrect and there may be a fault. The state detection unit 300 may issue an alarm and manually perform troubleshooting.

[0094] Furthermore, in one or more embodiments of the present specification, the status detection unit 300 is also used to obtain the generation time information when the switch representation information is generated or its effective deadline information, the switch information to which the switch representation information belongs, and the turnout information to which the switch representation information belongs, and add them to the preset positions relative to the switch representation information to form the final digitized switch representation information.

[0095] In one or more embodiments of this specification, this specification also provides a data flow diagram of a switch machine indication information digitization device, as shown in Figure 3. As shown in Figure 3, the switch machine indication information digitization device may include a left state identification component 1, a right state identification component 2, a first group of position detection sensors 3, a second group of position detection sensors 4, a third group of position detection sensors 5, and a fourth group of position detection sensors 6. Each group of position detection sensors may include three detection modules 7 and a state detection unit 9.

[0096] Among them, the three detection modules 7 in each group of position detection sensors form a three-out-of-two structure 8, and each group of position detection sensors is electrically connected to the status detection unit 9. The status detection unit 9 obtains the digital position information of the status identification parts from each group of position detection units, and encodes it to obtain the digital representation information 10 of the switch machine.

[0097] The present invention digitizes switch information, facilitating its transmission. The digitized information obtained by the status detection unit can be transmitted over long distances, enhancing anti-interference capabilities. The acquisition and transmission of switch information eliminates the need for analog circuits and supporting equipment, preventing failures resulting from equipment or device failures. Furthermore, direct communication between the switch information and the interlocking system is possible. Compared to the original position and reverse position information, the digitized switch information can convey more information about the switch's status, improving the accuracy of the switch status display and the reliability of the switch information.

[0098] It should also be noted that the terms "include", "comprises" or any other variations thereof in this specification are intended to cover non-exclusive inclusion, that is, in addition to the elements listed in this specification, other elements that are not explicitly listed may also be included.

[0099] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0100] The foregoing is merely an example of the present invention and is not intended to limit the present invention. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A device for digitizing switch machine information, characterized in that: include: Multiple state identification parts are used to reciprocate within a preset range as the turnout is switched to reflect the different processes and states of the turnout switching; Multiple groups of position detection sensors, each state identification part is provided with a group of position detection sensors on both sides, each group of position detection sensors is used to detect the distance between itself and the corresponding state identification part and output the position information of the corresponding state identification part; wherein, when the state identification part moves toward the corresponding position detection sensor to a preset approach threshold or moves away from the corresponding position detection sensor to a preset distance threshold, the first position information is output, otherwise, the second position information is output; The state detection unit is electrically connected to each group of position detection sensors, and is used to respectively obtain the position information of each state identification part output by each group of position detection sensors, and encode each position information to obtain digital switch machine representation information.

2. The switch machine display information digitization device according to claim 1, characterized in that: The plurality of state identification parts include: a left state identification part and a right state identification part; When the switch machine locking mechanism is in different states of pulled-in locking, switching, and extended locking, the left state identification part and the right state identification part move to the corresponding preset positions respectively, and are controlled by the indicating rod connected to the turnout in the pulled-in locking and extended locking states. If the indicating rod does not move into place, the left state identification part and the right state identification part cannot move to the preset positions corresponding to the pulled-in locking and extended locking states respectively.

3. The device for digitizing switch machine information according to claim 2, characterized in that: The multiple groups of position detection sensors include: four groups of position detection sensors; The first group of position detection sensors and the second group of position detection sensors are arranged on both sides of the left state identification part, and are used to determine the position of the left state identification part; The third group of position detection sensors and the fourth group of position detection sensors are arranged on both sides of the right state identification part and are used to determine the position of the right state identification part.

4. The device for digitizing switch machine information according to claim 1, characterized in that: When the state identification part moves toward the corresponding position detection sensor to a preset approach threshold, the corresponding position detection sensor switches from outputting the second position information to outputting the first position information; when the state identification part moves away from the corresponding position detection sensor to a preset away threshold, the corresponding position detection sensor switches from outputting the first position information to outputting the second position information; Among them, the first position information represents that the position detection sensor can detect its corresponding state identification part, and the corresponding state identification part is within a preset range close to it, and the second position information represents that the position detection sensor cannot detect its corresponding state identification part, and the corresponding state identification part is within a preset range far away from it.

5. The device for digitizing switch machine information according to claim 1, characterized in that: The first position information and the second position information output by the position detection sensor are digital quantities or analog quantities; When the first position information and the second position information are digital quantities, the state detection unit encodes the digital quantities to obtain digital switch machine representation information; When the first position information and the second position information are analog quantities, the state detection unit samples the analog quantities in real time, performs analog-to-digital conversion, and then performs encoding to obtain digital switch machine representation information.

6. The switch machine display information digitization device according to claim 1, characterized in that: When the state detection unit encodes the first position information and the second position information, a binary number "1" corresponds to the first position information, and a binary number "0" corresponds to the second position information; or, The binary number "0" corresponds to the first position information, and the binary number "1" corresponds to the second position information; or, The first position information is corresponding to a preset multi-bit binary number arrangement, and the second position information is corresponding to a bit-by-bit inversion result of the preset multi-bit binary number arrangement.

7. The device for digitizing switch machine information according to claim 3, characterized in that: The state detection unit arranges the code sequence of each position information in a positive order from the first group of position detection sensors to the fourth group of position detection sensors to obtain digital switch machine representation information; or, The state detection unit arranges the code sequence of each position information in the reverse order from the fourth group of position detection sensors to the first group of position detection sensors to obtain digital switch machine representation information; or, The code sequence of each position information is arranged according to a preset arrangement order to obtain digital switch machine representation information.

8. The device for digitizing switch machine information according to claim 1, characterized in that: Each group of position detection sensors includes a plurality of position detection sensors; Each group of position detection sensors uses the majority voting result of the respective outputs of the plurality of position detection sensors as the output of each group of position detection sensors; or, The state detection unit obtains the position information output by each position detection sensor, and for each group of position detection sensors, uses the majority voting result of the outputs of the plurality of position detection sensors included in the group as the output of the group of position detection sensors.

9. The switch machine display information digitization device according to claim 1, characterized in that: The state detection unit is also used to perform validity detection on the coded switch representation information according to multiple preset valid switch information, and to issue an alarm when the coded switch representation information is invalid, wherein the multiple preset valid switch information corresponds to different processes of turnout conversion.

10. The device for digitizing switch machine information according to claim 9, characterized in that: The state detection unit is also used to obtain the generation time information when the switch machine representation information is generated or its effective deadline information, the switch machine information to which the switch machine representation information belongs, and the turnout information to which the switch machine representation information belongs, and add them to the preset positions relative to the switch machine representation information respectively to form the final digitized switch machine representation information.

11. The device for digitizing switch machine information according to claim 1, characterized in that: The state detection unit is also used to use the encoded switch machine representation information as the current representation information, and determine whether the switch from the previous representation information of the current representation information to the current representation information complies with the preset effective switch conversion. If so, the current representation information is output, wherein the previous representation information is different from the current representation information.

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