Wireless crossing early warning equipment and crossing comprehensive early warning system

Abstract

The invention relates to the technical field of rail transit, and provides wireless crossing early warning equipment and a crossing comprehensive early warning system.The wireless crossing early warning equipment comprises a wireless early warning host and a first external interface connected with the wireless early warning host, and the first external interface is used for obtaining wired early warning signals of wired crossing early warning equipment and sending the wired early warning signals to the wireless early warning host; the wireless early-warning host is used for receiving the wireless early-warning information and the wired early-warning signal, the wireless early-warning information is incomplete, and the wired early-warning signal is a non-equipment fault early-warning signal, and the wireless early-warning host is used for transmitting the wireless early-warning information and the wired early-warning signal to the wireless early-warning host. And generating crossing early warning information based on the wireless early warning information and the wired early warning signal, wherein the condition that the wireless early warning information is incomplete includes the condition that the kilometer post and / or the speed are / is missing. According to the invention, the crossing early warning information can be generated in combination with the wireless early warning information and the relatively accurate and stable wired early warning signal, so that the crossing early warning information is more accurate, and early warning can be relatively stably performed.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a wireless crossing warning device and a comprehensive crossing warning system. Background Art

[0002] Railway crossings have always been a weak link in railway safety, with frequent accidents threatening the safety of people's lives and property. When a train approaches, in order to ensure safety, it is necessary to take necessary measures and equipment to promptly notify people near the railway crossing to avoid the train.

[0003] At present, railway crossing warning equipment is mainly divided into two categories: wired crossing warning equipment and wireless crossing warning equipment. However, the two warning equipment operate independently and their information cannot be communicated. When the wireless crossing warning equipment is in an abnormal working state (such as incomplete warning information or warning information interfered by the outside world), the warning is inaccurate, and the wired crossing warning equipment only provides a rough warning signal and cannot provide specific warning information (specific warning information such as train number, distance and duration). In short, the existing wired crossing warning equipment and wireless crossing warning equipment cannot provide accurate warning information relatively stably. Summary of the invention

[0004] The present invention provides a wireless crossing warning device and a comprehensive crossing warning system, which are used to solve the technical problem that both the wired crossing warning device and the wireless crossing warning device in the prior art cannot provide accurate warning information relatively stably.

[0005] The present invention provides a wireless crossing warning device, comprising: a wireless warning host and a first external interface connected to the wireless warning host, the first external interface being used to obtain a wired warning signal of a wired crossing warning device, and transmitting the wired warning signal to the wireless warning host, the wireless warning host being used to generate crossing warning information based on the wireless warning information and the wired warning signal when receiving wireless warning information and the wired warning signal, and the wireless warning information is incomplete, and the wired warning signal is a non-equipment failure warning signal, wherein the incomplete wireless warning information includes the situation where a kilometer mark and / or speed is missing.

[0006] According to a wireless crossing warning device provided by the present invention, the wireless warning host is used to generate the crossing warning information based on the wired warning signal and the wireless warning information when the received wired warning signal indicates that a train is approaching.

[0007] According to a wireless crossing warning device provided by the present invention, when the wired warning signal received by the wireless warning host is an uplink approach warning signal or a downlink approach warning signal, and the kilometer mark in the wireless warning information is missing, the wireless warning host generates uplink and downlink warning information based on the uplink and downlink warning signals, generates the crossing warning information based on the uplink and downlink warning information and the wireless warning information, and sends the crossing warning information to the display screen and the speaker of the wireless crossing warning device. The wireless warning host is also used to display the crossing warning information in the uplink display area or the downlink display area of ​​the display screen interface based on the uplink and downlink directions determined by the uplink and downlink warning information.

[0008] According to a wireless crossing warning device provided by the present invention, when the wired warning signal received by the wireless warning host is an up approach warning signal or a down approach warning signal, and the wireless warning information includes a kilometer mark but lacks a speed, the wireless warning host determines a first up and down direction based on the kilometer mark, generates up and down warning information based on the up approach warning signal or the down approach warning signal, generates the crossing warning information based on the up and down warning information and the wireless warning information, and sends the crossing warning information to a display screen and a speaker of the wireless crossing warning device; the wireless warning host is further used to display the crossing warning information in an up display area or a down display area corresponding to a second up and down direction determined in the up and down warning information based on the second up and down direction in the display screen interface; When the first uplink and downlink directions are consistent with the second uplink and downlink directions, the crossing warning information at least includes the distance; otherwise, the train number, distance and duration in the crossing warning information are all empty.

[0009] According to a wireless crossing warning device provided by the present invention, when the wired warning signal received by the wireless warning host is a manual approach warning signal, and the kilometer mark and / or speed are missing in the wireless warning information, the wireless warning host is used to generate train approach warning information based on the manual approach warning signal, generate the crossing warning information based on the train approach warning information and the wireless warning information, and send the crossing warning information to the display screen and speaker of the wireless crossing warning device, and display the crossing warning information in both the upper display area and the lower display area of ​​the display screen interface.

[0010] According to a wireless crossing warning device provided by the present invention, the wireless warning host is also used to generate the crossing warning information based on the received wireless warning information when the received wired warning signal is an equipment failure signal of the wired crossing warning device.

[0011] According to a wireless crossing warning device provided by the present invention, the wireless warning host is also used to generate the crossing warning information based on the complete wireless warning information when the complete wireless warning information is received and the kilometer mark in the wireless warning information is within the kilometer mark range of the center of the crossing.

[0012] According to a wireless crossing warning device provided by the present invention, the wireless warning host is also used to generate the crossing warning information based on the wired warning signal when the wired warning signal is received but the wireless warning information is not received; or to determine that the wireless warning information is interference information when the wireless warning information is received but the wired warning signal is not received.

[0013] The present invention also provides a comprehensive crossing warning system, comprising: a wired crossing warning device and any of the wireless crossing warning devices described above, wherein the wired crossing warning device comprises: a wired warning host and a second external interface connected to the wired warning host.

[0014] The first external interface is connected to the second external interface via a signal line, and the second external interface sends the wired warning signal obtained by the wired warning host to the first external interface via the signal line.

[0015] According to a comprehensive warning system for a road crossing provided by the present invention, the second external interface includes: a common dry contact and a plurality of wired warning signal dry contacts, each wired warning signal dry contact can be connected to the common dry contact in an on-off manner, the first external interface includes: a GPIO pin corresponding to each of the wired warning signal dry contacts, the wireless warning host includes a plurality of level signal detection circuits, and each level signal detection circuit is connected to a GPIO pin respectively.

[0016] The wireless crossing warning device and the comprehensive crossing warning system provided by the present invention have a first external interface connected to the wired crossing warning device in the wireless crossing warning device, and the wired warning signal of the wired crossing warning device is obtained through the first external interface. The wireless warning host receives the wired warning signal, and when the received wireless warning information is incomplete and the wired warning signal is not a warning signal for equipment failure, the crossing warning information is generated by combining the wireless warning information and the wired warning signal. Since the wired crossing warning device detects trains through sensors installed beside the track, the accuracy and reliability of the wired warning signal are higher, and the wired warning signal will not be interfered by the signal, and the wired warning signal can be transmitted stably. Therefore, the crossing warning information combining the wireless warning information and the wired warning signal is more accurate and can make warnings relatively stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the wireless crossing warning device provided by the present invention.

[0019] Figure 2 It is a structural schematic diagram of the wired crossing warning device provided by the present invention.

[0020] Figure 3 It is a structural schematic diagram of the comprehensive warning system for a crossing provided by the present invention.

[0021] Figure numerals: 100: wireless crossing warning device; 101: wireless warning host; 102: first external interface; 103: display screen; 104: speaker; 105: antenna system; 106: crossing battery; 107: storage unit; 200: wired crossing warning device; 201: wired warning host; 202: second external interface; 203: track sensor; 204: crossing signal. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The wireless crossing warning device of the embodiment of the present invention is as follows: Figure 1As shown, it includes: a wireless warning host 101 and a first external interface 102 connected to the wireless warning host 101. Of course, the wireless crossing warning device also includes: a display screen 103, a speaker 104, an antenna system 105, a crossing battery 106 and a storage unit 107. Among them, the crossing battery 106 supplies power to the wireless warning host 101, the display screen 103, the speaker 104 and the antenna system 105; the antenna system 105 is used to receive wireless warning information periodically sent by trains near the crossing, the wireless warning host 101 usually generates crossing warning information based on the wireless warning information, and displays the crossing warning information on the display screen 103, the speaker 104 is used to broadcast the crossing warning information, and the storage unit 107 is used to store the wireless warning information and the crossing warning information. Specifically, the wireless warning information includes: train number, kilometer mark and speed (train speed), and the crossing warning information includes: up and down information, train number, distance (real-time distance between the train and the crossing) and duration (time for the train to reach the crossing), where the distance can be calculated based on the received kilometer mark and the kilometer mark at the crossing location, and the duration is calculated based on the distance and speed. The wireless warning host 101 can determine the up and down direction of the train according to the change rule of the kilometer mark. When the kilometer mark changes from large to small, it is in the up direction, and when it changes from small to large, it is in the down direction.

[0024] In this embodiment, the first external interface 102 is used to obtain the wired warning signal of the wired crossing warning device, and transmit the wired warning signal to the wireless warning host 101. The wireless warning host 101 is used to generate crossing warning information based on the wireless warning information and the wired warning signal when receiving the wireless warning information and the wired warning signal, and the wireless warning information is incomplete, and the wired warning signal is not a device failure warning signal. The incomplete wireless warning information includes the situation where the kilometer mark and / or speed are missing (that is, the kilometer mark is missing, the speed is missing, or both the kilometer mark and the speed are missing).

[0025] Since wireless crossing warning equipment may be subject to signal interference, some data items in the received wireless warning information may be missing, such as kilometer marks and / or speed. For wireless warning information with missing data items, the crossing warning information is generated in combination with the wired warning signal, making the final generated crossing warning information more accurate.

[0026] It should be noted that: the crossing warning information is more accurate does not mean that each data item is completely and accurately warned. For missing data items, if both the wired warning signal and the wireless warning information cannot be restored, there is no need to display or broadcast the warning for the missing data items to avoid false alarms, and to ensure accurate warnings for the remaining data items as much as possible. For the received wired warning signal, the wireless warning host 101 also sends the wired warning signal and the wireless warning information to the storage unit 107 for storage in the form of logs.

[0027] In the wireless crossing warning device of this embodiment, a first external interface 102 connected to the wired crossing warning device is provided, and the wired warning signal of the wired crossing warning device is obtained through the first external interface 102. The wireless warning host 101 receives the wired warning signal, and when the received wireless warning information is incomplete, the wired warning signal is not a warning signal for equipment failure. The crossing warning information is generated by combining the wireless warning information and the wired warning signal. Since the wired crossing warning device detects the train through a sensor installed beside the track, the accuracy and reliability of the wired warning signal are higher, and the wired warning signal will not be affected by signal interference, and the wired warning signal can be transmitted stably. Therefore, the crossing warning information combining the wireless warning information and the wired warning signal is more accurate and can make warnings relatively stably.

[0028] In some embodiments, the wireless warning host 101 is used to generate the crossing warning information based on the wired warning signal and the wireless warning information when the received wired warning signal indicates that a train is approaching. Since the wireless crossing warning device will only issue an alert when a train is approaching a crossing, when the wired warning signal indicates that a train is approaching, the wireless warning host 101 generates the crossing warning information based on the wired warning signal and the wireless warning information to achieve the purpose of effective warning.

[0029] In some embodiments, when the wired warning signal received by the wireless warning host 101 is an uplink approach warning signal or a downlink approach warning signal, and the kilometer mark in the wireless warning information is missing, the wireless warning host 101 generates uplink and downlink warning information (uplink warning information or downlink warning information) based on the uplink and downlink warning signals or the downlink approach warning signals, and generates the crossing warning information based on the uplink and downlink warning information and the wireless warning information (it should be noted that: since the kilometer mark is missing, the distance and duration in the generated crossing warning information are both empty, if there is a train number, the train number is displayed, otherwise, the train number is also empty), sends the crossing warning information to the display screen 103 and the speaker 104 of the wireless crossing warning device, and displays the crossing warning information in the uplink display area or the downlink display area of ​​the display screen 103 interface.

[0030] For example, when the wireless warning host 101 receives an upward approach warning signal, and the kilometer mark in the wireless warning information is missing, the upward warning information is generated based on the upward approach warning signal, and the crossing warning information generated in combination with the wireless warning information is: upward approach, train number: "XXXXX" (if the train number is also invalid, it is displayed as "NULL"), distance: "NULL", duration: "NULL", because the kilometer mark is missing, the distance and duration in the generated crossing warning information are both empty, but according to the upward approach warning signal, it is determined that the train is approaching upward. Therefore, the wireless warning host 101 controls the speaker 104 to broadcast "upward approach" and displays the above crossing warning information in the upward display area of ​​the display screen 103 interface.

[0031] In the wireless warning information periodically issued by the train, the kilometer mark and speed change with the movement of the train and need to be obtained in real time. If the kilometer mark and / or speed are missing, it means that the received wireless warning information may be interference information on adjacent lines, and may be inconsistent with the actual warning information. In this case, a more accurate wired warning signal is used to determine the up and down directions of the train, and then the crossing warning information is generated in combination with the non-missing data items in the wireless warning information, so that the crossing warning information is more accurate.

[0032] In some embodiments, when the wired warning signal received by the wireless warning host 101 is an uplink approach warning signal or a downlink approach warning signal, and the wireless warning information includes a kilometer mark but lacks a speed, the wireless warning host 101 determines the first uplink and downlink directions based on the kilometer mark, generates uplink and downlink warning information based on the uplink and downlink warning signal or the downlink approach warning signal, generates the crossing warning information based on the uplink and downlink warning information and the wireless warning information, and sends the crossing warning information to the display screen and speaker of the wireless crossing warning device.

[0033] The wireless warning host 101 is also used to display the crossing warning information in an uplink display area or a downlink display area corresponding to the second uplink and downlink directions determined in the uplink and downlink warning information based on the second uplink and downlink directions.

[0034] When the first up and down directions are consistent with the second up and down directions, the crossing warning information at least includes the distance, otherwise, the train number, distance and duration in the crossing warning information are all empty. That is, the wireless warning host 101 is used to determine whether the first up and down directions are consistent with the second up and down directions. When they are consistent, the generated crossing warning information includes: up approaching or down approaching, train number: "XXXXX" (valid or empty according to actual conditions), distance: "XXXXX", duration: "NULL" (due to the lack of speed, duration is empty); when they are inconsistent, the generated crossing warning information includes: up approaching or down approaching, train number: "NULL", distance: "NULL", duration: "NULL".

[0035] In this embodiment, the first up and down directions of the train are determined by the changing pattern of the kilometer mark in the wireless warning information. When the first up and down directions determined according to the kilometer mark are consistent with the second up and down directions in the up and down warning information, it means that the received wireless warning information is the wireless warning information issued by the train that is about to arrive at the target crossing, and there is no problem with the kilometer mark. It is considered that the train number is a valid train number. At this time, the crossing warning information is: up approaching or down approaching, train number "XXXXX", distance: "XXXXX", duration: "NULL"; if the first up and down directions determined according to the kilometer mark are inconsistent with the second up and down directions in the up and down warning information, it means that the received wireless warning information may come from the locomotive on the adjacent line near the crossing, not the locomotive that actually passes through the crossing. Therefore, the crossing warning information is: up approaching or down approaching, train number "NULL", distance: "NULL", duration: "NULL".

[0036] In this embodiment, by verifying the uplink and downlink directions, the valid data items in the wireless warning information can be further confirmed, so that the generated crossing warning information is more accurate and a more accurate warning is achieved.

[0037] In some embodiments, when the wired warning signal received by the wireless warning host 101 is a manual approach warning signal, and the kilometer mark and / or speed are missing in the wireless warning information, the wireless warning host 101 is used to generate train approach warning information based on the manual approach warning signal, generate the crossing warning information based on the train approach warning information and the wireless warning information, and send the crossing warning information to the display screen and speaker of the wireless crossing warning device, and display the crossing warning information in both the upper display area and the lower display area of ​​the display screen interface.

[0038] Specifically, after receiving the manual approach warning signal, the wireless warning host 101 generates the train approach warning information based on the manual approach warning signal, and generates the crossing warning information in combination with the wireless warning information. The crossing warning information is: train approaching, train number "XXXXX" (if the train number is also invalid, it is displayed as "NULL"), distance: "NULL", duration: "NULL", for example: the kilometer mark is missing, so the distance and duration in the generated crossing warning information are both empty, and the above-mentioned crossing warning information is displayed in the upper display area and the lower display area of ​​the display screen 103 interface, and the speaker 104 is controlled to broadcast "train approaching". In this embodiment, since the up and down directions of the train cannot be determined, the above-mentioned crossing warning information is displayed in the upper display area and the lower display area of ​​the display screen 103 interface to remind the staff to pay attention to the direction of the train.

[0039] In some embodiments, the wireless warning host is also used to generate the crossing warning information based on the received wireless warning information when the received wired warning signal is an equipment failure signal of the wired crossing warning device.

[0040] Specifically, since the wired crossing warning device fails, the wired warning signal cannot be used as a reference, and the crossing warning information can only be generated based on the wireless warning information. When the wireless warning host 101 receives the wireless warning information, it can issue a warning based on the wireless warning information. Further, when the wireless warning host 101 receives the equipment failure warning signal sent by the wired crossing warning device, the speaker 104 is controlled to broadcast the failure information to remind relevant staff to perform inspection and maintenance.

[0041] In some embodiments, the wireless warning host 101 is also used to generate the crossing warning information based on the complete wireless warning information when the complete wireless warning information is received and the kilometer mark in the wireless warning information is within the kilometer mark range of the crossing center.

[0042] Specifically, since the wireless warning host 101 has received complete wireless warning information, i.e., warning information with valid train number, kilometer mark and speed, and the range of kilometer mark in the complete wireless warning information is within the kilometer mark range of the crossing center (e.g., within 3.5 kilometers of the crossing center), it means that the complete wireless warning information is the wireless warning information issued by the locomotive approaching the crossing. In this scenario, it is not necessary to rely on the wired warning signal to issue a warning. The wireless warning host 101 determines whether the train is approaching upward or downward according to the change rule of the kilometer mark in the complete wireless warning information. For example, in the case of approaching upward, the upward display area of ​​the display screen 103 interface displays: approaching upward, train number: "XXXXX", distance: "XXX", duration: "XXX", and controls the speaker 104 to broadcast "approaching upward".

[0043] In this embodiment, when the wireless warning host 101 receives complete wireless warning information, it considers that the received wireless warning information is accurate and effective, and does not need to refer to the wired warning signal, but directly issues a warning, thereby achieving fast and accurate warning.

[0044] It should be noted that: in the wireless warning information received by the wireless warning host 101, if only the train number is missing, and the kilometer mark and speed are not missing, the wireless warning information can be considered complete, because the kilometer mark and speed are obtained in real time as the train moves. As long as both the kilometer mark and the speed are not missing, it means that the wireless warning information sent by the train is valid. At this time, the upper display area of ​​the display screen 103 interface displays: Upward approach, train number: "NULL", distance: "XXX", duration: "XXX".

[0045] In some embodiments, the wireless warning host 101 is also used to generate the crossing warning information based on the wired warning signal when the wired warning signal is received but the wireless warning information is not received.

[0046] Specifically, failure to receive the wireless warning information may be due to a lack of power or anomaly in the train's locomotive radio (LBJ) or the train having no locomotive radio. In this case, the crossing warning information is generated only based on the wired warning signal. For example, when the wireless warning host 101 receives an uplink approach warning signal or a downlink approach warning signal (the locomotive is less than 2 km away from the crossing), it generates uplink and downlink warning information (uplink warning information or downlink warning information), and controls the speaker 104 to broadcast "uplink approaching" or "downlink approaching" according to the uplink warning information or the downlink warning information. The uplink display area or the downlink display area of ​​the interface of the display screen 103 displays: uplink approaching or downlink approaching, train number: "NULL", distance: "NULL", duration: "NULL", and stores the uplink approaching warning signal or the downlink approaching warning signal.

[0047] For another example: when the wireless early warning host 101 receives a manual approach warning signal, it generates a train approach warning information according to the manual approach warning signal, controls the speaker 104 to broadcast "train approaching" according to the train approach warning information, and displays in the upper display area and the lower display area of ​​the interface of the display screen 103: train approaching, train number: "NULL", distance: "NULL", duration: "NULL", and stores the manual approach warning signal.

[0048] When the wireless warning information is received and the wired warning signal is not received, the wireless warning information is determined to be interference information. Specifically, even if the wired crossing warning device fails, a device failure warning signal will be sent to the wireless crossing warning device. Therefore, when the wired warning signal is not received but the wireless warning information is received, it indicates that the wireless warning information is interference information of vehicles on the adjacent track of the crossing and is not processed.

[0049] The comprehensive warning system for road crossings provided by the present invention is described below. The comprehensive warning system for road crossings described below is a comprehensive system based on the wireless road crossing warning device described above.

[0050] like Figure 2 and 3 As shown, the integrated crossing warning system of the embodiment of the present invention includes: a wired crossing warning device 200 and a wireless crossing warning device 100 of the above embodiment, wherein the wired crossing warning device 200 includes: a wired warning host 201 and a second external interface 202 connected to the wired warning host 201, and of course, the wired crossing warning device 200 also includes: a track sensor 203 and two crossing signals 204. Among them, the track sensor 203 adopts a magnetoelectric sensor to convert the movement speed of the train wheel into an induced potential output in the coil, that is, directly converts the mechanical energy of the wheel edge into an electrical signal output, does not require an external power supply to work, and is a passive sensor widely used in locomotive axle counter detection equipment, locomotive speed measuring equipment and crossing alarm equipment. Two crossing signals 204, the two crossing signals 204 include two red signal lights, one white signal light and a speaker. The white light is on in the standby state, and the two red signal lights are alternately lit in the alarm state, and the speaker plays a safety reminder sound of the train passing.

[0051] In this embodiment, the first external interface 102 is connected to the second external interface 202 via a signal line, and the second external interface 202 sends the wired warning signal obtained by the wired warning host 201 to the first external interface 102 via the signal line. Specifically, the wired warning host 201 transmits the obtained wired warning signal to the wireless warning host 101 via the second external interface 202, the signal line and the first external interface 102.

[0052] In the integrated crossing warning system of this embodiment, the wired crossing warning device 200 and the wireless crossing warning device 100 of the above embodiment are connected through an interface, and the wireless warning host 101 obtains the wired warning signal of the wired crossing warning device through the first external interface 102 and the second external interface 202, and generates crossing warning information in combination with the wireless warning information sent by the received train. Since the wired crossing warning device detects the train through a sensor installed beside the track, the accuracy and reliability of the wired warning signal are higher, and the wired warning signal will not be interfered by the signal, and the wired warning signal can be transmitted stably. Therefore, the crossing warning information combining the wireless warning information and the wired warning signal is more accurate and can make warnings relatively stably.

[0053] In some embodiments, the second external interface 202 includes: a common dry contact and a plurality of wired warning signal dry contacts, each wired warning signal dry contact can be connected to the common dry contact, the first external interface includes: a GPIO pin corresponding to each of the wired warning signal dry contacts, the wireless warning host includes a plurality of level signal detection circuits, each level signal detection circuit is connected to a GPIO pin. The level signal detection circuit is used to detect high and low levels, and a comparator circuit can be used.

[0054] Dry contact: Different from wet contact, it refers to a non-electrical, mechanical contact, usually composed of two or more metal contacts. When these contacts are closed or open, they can indicate the switch state. Dry contacts transmit signals by physical release or separation. When the contacts are closed, the circuit is connected; when the contacts are open, the circuit is disconnected. This transmission method does not rely on current or voltage, so it is called a "dry" node. It is usually used to indicate the operating status, location information or safety status of the equipment.

[0055] In this embodiment, four signal dry contacts and one common dry contact may be provided in the second external interface 202, and each signal dry contact and common dry contact have a detection circuit for detecting the wired warning signal of the wired crossing warning device 200. There are four dry contact identification circuits on the interface board of the wireless warning host 101, each of which is connected to a GPIO pin of the first external interface 102, and four types of wired warning signals, namely "upward approach warning signal", "downward approach warning signal", "manual approach warning signal" and "equipment status signal (fault or normal)", are identified respectively through different identification circuits. See Table 1 and Table 2 below for details.

[0056] Table 1 Dry contact names and meanings

[0057] Table 2 Correspondence between dry contact and GPIO pin detection

[0058] In this embodiment, the wireless crossing warning device 100 detects the wired warning signal of the wired crossing warning device 200 by means of dry contacts, and can reliably detect the wired warning signal. The interface circuit is simple to implement and has low cost.

[0059] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0060] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wireless crossing warning device, characterized in that: include: A wireless warning host and a first external interface connected to the wireless warning host, the first external interface is used to obtain a wired warning signal of a wired crossing warning device and transmit the wired warning signal to the wireless warning host, the wireless warning host is used to generate crossing warning information based on the wireless warning information and the wired warning signal when receiving the wireless warning information and the wired warning signal, and the wireless warning information is incomplete and the wired warning signal is a non-equipment failure warning signal, wherein the incomplete wireless warning information includes the missing kilometer mark and / or speed.

2. The wireless crossing warning device according to claim 1, characterized in that: The wireless warning host is used to generate the crossing warning information based on the wired warning signal and the wireless warning information when the received wired warning signal indicates that a train is approaching.

3. The wireless crossing warning device according to claim 2, characterized in that: When the wired warning signal received by the wireless warning host is an uplink approach warning signal or a downlink approach warning signal, and the kilometer mark in the wireless warning information is missing, the wireless warning host generates uplink and downlink warning information based on the uplink and downlink warning signal, generates the crossing warning information based on the uplink and downlink warning information and the wireless warning information, and sends the crossing warning information to the display screen and speaker of the wireless crossing warning device. The wireless warning host is also used to display the crossing warning information in the uplink display area or the downlink display area of ​​the display screen interface based on the uplink and downlink directions determined by the uplink and downlink warning information.

4. The wireless crossing warning device according to claim 2, characterized in that: In the case where the wired warning signal received by the wireless warning host is an up approach warning signal or a down approach warning signal, and the wireless warning information includes a kilometer mark but lacks a speed, the wireless warning host determines a first up and down direction based on the kilometer mark, generates up and down warning information based on the up approach warning signal or the down approach warning signal, generates the crossing warning information based on the up and down warning information and the wireless warning information, and sends the crossing warning information to the display screen and the speaker of the wireless crossing warning device; the wireless warning host is also used to display the crossing warning information in an up display area or a down display area corresponding to the second up and down directions determined in the up and down warning information in the display screen interface based on the second up and down directions; When the first uplink and downlink directions are consistent with the second uplink and downlink directions, the crossing warning information at least includes the distance; otherwise, the train number, distance and duration in the crossing warning information are all empty.

5. The wireless crossing warning device according to claim 2, characterized in that: When the wired warning signal received by the wireless warning host is a manual approach warning signal, and the kilometer mark and / or speed are missing in the wireless warning information, the wireless warning host is used to generate train approach warning information based on the manual approach warning signal, generate the crossing warning information based on the train approach warning information and the wireless warning information, send the crossing warning information to the display screen and speaker of the wireless crossing warning device, and display the crossing warning information in both the upper display area and the lower display area of ​​the display screen interface.

6. The wireless crossing warning device according to any one of claims 1 to 5, characterized in that: The wireless warning host is also used to generate the crossing warning information based on the received wireless warning information when the received wired warning signal is an equipment failure signal of the wired crossing warning device.

7. The wireless crossing warning device according to any one of claims 1 to 5, characterized in that: The wireless warning host is also used to generate the crossing warning information based on the complete wireless warning information when the complete wireless warning information is received and the kilometer mark in the wireless warning information is within the kilometer mark range of the crossing center.

8. The wireless crossing warning device according to any one of claims 1 to 5, characterized in that: The wireless warning host is also used to generate the crossing warning information based on the wired warning signal when the wired warning signal is received but the wireless warning information is not received; or to determine that the wireless warning information is interference information when the wireless warning information is received but the wired warning signal is not received.

9. A comprehensive warning system for a crossing, characterized in that: include: A wired crossing warning device and a wireless crossing warning device as claimed in any one of claims 1 to 8, wherein the wired crossing warning device comprises: a wired warning host and a second external interface connected to the wired warning host; The first external interface is connected to the second external interface via a signal line, and the second external interface sends the wired warning signal obtained by the wired warning host to the first external interface via the signal line.

10. The comprehensive warning system for crossing according to claim 9 is characterized in that: The second external interface includes: a common dry contact and multiple wired warning signal dry contacts, each wired warning signal dry contact can be connected to the common dry contact in an on-off manner, the first external interface includes: a GPIO pin corresponding to each of the wired warning signal dry contacts, the wireless warning host includes multiple level signal detection circuits, each level signal detection circuit is connected to a GPIO pin respectively.

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