Computer interlocking and signal lamp double-channel connection and signal lamp light source test method

Abstract

The invention discloses a computer interlocking and signal lamp dual-channel connection and signal lamp light source test method, which does not need to add hardware, realizes and optimizes a connection channel and realizes real-time monitoring of a signal lamp by relying on existing equipment, and is particularly suitable for the condition that an outdoor execution cabinet is arranged in full-electronic interlocking. According to the invention, the fault discovery speed is improved, efficient and accurate light source state monitoring and management are realized, the operation and maintenance efficiency is improved, the safety is high, the driving safety rule is strictly followed, and the normal driving is not influenced in the detection process. In a word, the reliability and the maintenance efficiency of the railway signal system are improved, and particularly, the method has great application value in maintenance of the signal system.

Description

Technical Field

[0001] The invention relates to the technical field of railway signals, and in particular to a method for connecting a computer interlocking with a signal light in two channels and testing a signal light source. Background Art

[0002] The reliability of the railway signal system is directly related to driving safety and efficiency. As a key component, the reliable operation of the signal lights (bulbs) of the signal machine is crucial. In the existing equipment, the control of the signal lights of each signal machine (there are several signal lights on a signal machine) is independent, but the alarm is combined. Generally, multiple signal machines in the area are connected through a pair of buses, and the alarm is on the centralized monitoring equipment in the equipment room. The disadvantage of this solution is that since there is only one pair of bus cables, only one signal light in the area can be alarmed at the same time. If multiple signal light failures occur continuously, the subsequent alarm status cannot be returned to the centralized monitoring equipment, and the supervision function cannot be effectively played. There is a possibility that multiple failures may occur and cannot be discovered in time to affect the use.

[0003] In addition, when there is a fault alarm, the signal lights need to be replaced and tested to see if they are intact. In the implementation process of the existing technology, route testing is required, which has the problems of long waiting time for maintenance points and long testing time, especially when testing multiple signal lights. The workload is large. After the test is completed, when the route is cancelled, there is also the problem of delayed unlocking due to the approaching train. The route unlocking waiting time may affect the subsequent train reception operation. The existing methods mainly rely on the reliability of signal lights, and there is room for improvement; there is a lack of fast and efficient verification methods after the signal lights are repaired and replaced, which affects the reliability and maintainability of railway transportation. Summary of the invention

[0004] The purpose of the present invention is to provide a computer interlocking and signal light dual-channel connection and signal light light source testing method, which not only has a comprehensive and complete alarm, but also can verify whether the signal light replacement work of the signal machine is completed in a relatively short time, quickly and efficiently identify whether the faulty signal light has been restored, shorten maintenance time, and reduce the on-site maintenance burden.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A dual-channel connection method of a computer interlocking and a signal light, comprising:

[0007] Connect each signal unit to the signal lights on each signal one by one;

[0008] The signal module of the computer interlocking system is connected to each signal unit to form a first channel, and the lighting and extinguishing of the signal light are controlled and supervised through the first channel; the acquisition module of the computer interlocking system is connected to each signal unit to form a second channel, and the fault status of the signal light is supervised through the second channel.

[0009] A signal light source testing method, which realizes the computer interlocking and signal light dual-channel connection through the above method, and then performs the signal light source testing, comprising the steps of:

[0010] Receive a signal light test command through the first channel, determine whether the signal light to be tested meets the test conditions, if the test conditions are met, determine whether the signal light to be tested is a train signal light, if so, divide the signal lights of the train signal light into multiple groups, and use a group lighting strategy to test, and generate a signal light drive output logic variable, if not, test the signal lights of the signal light to be tested together, and generate a signal light drive output logic variable;

[0011] Convert the signal light drive output logic variable into actual control output, and output it through the first channel by the signal module;

[0012] The acquisition module is used to monitor the fault status of the signal light through the second channel, determine the test result of the signal light, and display it through the display terminal.

[0013] It can be seen from the technical solution provided by the present invention that no additional hardware is needed, and it can be realized by relying on existing equipment, optimizing the connection channel, and realizing real-time monitoring of signal lights. It is particularly suitable for the situation where an outdoor execution cabinet is set up for full electronic interlocking. The present invention improves the speed of fault discovery, realizes efficient and accurate light source status monitoring and management, improves operation and maintenance efficiency, has high safety, strictly abides by driving safety rules, and ensures that the detection process does not affect normal driving. In short, the present invention improves the reliability and maintenance efficiency of the railway signal system, and has great application value, especially for the maintenance of the signal system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0015] Figure 1 A schematic diagram of a dual-channel connection method of a computer interlocking and a signal light provided by an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of a signal light source testing method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 protection scope of the present invention.

[0018] First, the terms that may be used in this article are explained as follows:

[0019] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y means both “X” or “Y” and “X and Y”.

[0020] The terms "include", "comprises", "contains", "has" or other descriptions with similar semantics should be interpreted as non-exclusive inclusion. For example, including certain technical feature elements (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or products, etc.) should be interpreted as including not only certain technical feature elements explicitly listed, but also other technical feature elements known in the art that are not explicitly listed.

[0021] The term "consisting of..." means excluding any technical feature elements not explicitly listed. If this term is used in a claim, it will make the claim closed, so that it does not contain technical feature elements other than the technical feature elements explicitly listed, except for the conventional impurities related to them. If this term only appears in a clause of a claim, it only limits the elements explicitly listed in the clause, and the elements recorded in other clauses are not excluded from the overall claim.

[0022] Unless otherwise specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0023] The following is a detailed description of a computer interlocking and signal light dual-channel connection and signal light light source test method provided by the present invention. The contents not described in detail in the embodiments of the present invention belong to the prior art known to professional and technical personnel in the field. If no specific conditions are specified in the embodiments of the present invention, the conventional conditions in the field or the conditions recommended by the manufacturer are followed. If the manufacturer is not specified in the reagents or instruments used in the embodiments of the present invention, they are all conventional products that can be purchased commercially.

[0024] Embodiment 1

[0025] The embodiment of the present invention provides a dual-channel connection method of a computer interlocking and a signal light. Figure 1 It is a schematic diagram of the above connection method, which mainly includes: connecting each signal unit with the signal light on each signal one-to-one; connecting the signal module of the computer interlocking system with each signal unit to form a first channel, and controlling and supervising the lighting and extinguishing of the signal light through the first channel; connecting the acquisition module of the computer interlocking system with each signal unit to form a second channel, and supervising the fault status of the signal light through the second channel.

[0026] In the method provided by the embodiment of the present invention, a dual channel is constructed between the computer interlocking system and each signal light, the first channel (channel 1) is a control and display channel, and the second channel (channel 2) is a fault monitoring channel. A logic host, a signal module, a collection module, and a display terminal are set in the computer interlocking system, and the signal module and the collection module are respectively connected to the logic host, and the logic host displays the status of each signal light through the display terminal. In the first channel, the signal module is connected to the signal unit set next to the signal through a cable (for example, a 2-core AC220V cable) to control the lighting and extinguishing of the signal light. The signal module is connected to the signal unit, and the signal unit is connected to the signal light. In the second channel, the collection module is set with a 1-core collection common line, which is connected to all signal units in the area to provide a common return line for collecting information. The collection module is connected to each signal unit through a cable (for example, a 1-core DC48V cable), and cooperates with the collection common line to complete the supervision of the status of the signal light. The logic host is connected to the signal module and the collection module, and issues control commands and receives display information. The logic host is connected to the display terminal, and the logic host receives the operation command of the display terminal and uploads the status of the signal light.

[0027] like Figure 1As shown, the signal module includes multiple channels, each of which is connected to a signal unit to form a first channel. For example, one signal module can be connected to 16 signal units, and one signal unit is connected to a signal light; each channel of the signal module is provided with two connected ports, both of which are connected to the signal unit. The acquisition module includes multiple channels (for example, 16 channels), each of which is connected to a signal unit to form a second channel; each channel of the acquisition module is provided with two connected ports, one of which is connected to the signal unit, and the other is connected to the acquisition common line.

[0028] In the first channel, the signal module controls and monitors whether the signal light is on or off by outputting or cutting off the voltage. At the same time, in the second channel, the acquisition module monitors whether the signal light fails by retrieving the internal relay state of the signal unit. Specifically: one of the two ports of the first channel is the positive terminal and the other is the negative terminal. If the signal module receives the command to turn on the light, it outputs the voltage; if the signal module does not receive the command to turn on the light, it does not output the voltage; the acquisition common return line is the outgoing end, and the current returns to the acquisition module after passing through the signal unit. The acquisition module side is the return end. The internal state of the signal unit is judged by whether there is current on the acquisition module side; when the control signal light is off, the corresponding port of the signal module does not output voltage, and the acquisition module retrieves the internal relay state of the signal unit through the corresponding port to monitor whether the corresponding signal light fails. When the control signal light is on, the two ports of the signal module output voltage to supply power to the signal light, and the signal light changes to the lighting state; if the signal light fails, the two ports of the acquisition module retrieve the state to monitor that the corresponding signal light has failed, and the fault state is fed back to the logic host.

[0029] Through the above method, the signal light fault display can be refined to each individual signal light, and the specific fault situation can be reported through the display terminal. For example, when a specific signal light (such as a red light or a green light) fails, the display terminal adds a red circle image outside the corresponding signal icon and prompts "<Station><Signal><Signal Light> Fault", realizing the complete display of the display terminal.

[0030] Embodiment 2

[0031] The embodiment of the present invention provides a signal light source testing method. First, based on the method provided in the above embodiment, a dual-channel connection between a computer interlocking and a signal light is realized, and then a signal light source test is performed. The steps mainly include: receiving a signal machine test command through a first channel to determine whether the signal machine to be tested meets the test conditions. If the test conditions are met, it is determined whether the signal machine to be tested is a train signal machine. If so, the signal lights of the train signal machine are divided into multiple groups, and a group lighting strategy is adopted for testing to generate a signal light drive output logic variable. If not, the signal lights of the signal machine to be tested are tested together to generate a signal light drive output logic variable; the signal light drive output logic variable is converted into an actual control output, and output by the signal module through the first channel; the acquisition module is used to monitor the fault state of the signal light through the second channel, the signal light test result is determined, and displayed through the display terminal.

[0032] Furthermore, before receiving the signal light test command through the first channel, it is necessary to process the display information, which mainly includes: receiving the display information of each signal light through the first channel, and judging whether to send a light-off display to the display terminal or to display according to the signal display principle according to whether the current state of the signal light is a test state.

[0033] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the method provided by the embodiment of the present invention is described in detail with reference to specific embodiments below.

[0034] During the maintenance of traffic lights, after manually replacing the traffic lights, it is impossible to determine whether the traffic lights have been installed properly and whether the replacement work has been completed because there may be no current flowing at the time. The existing method is to ask the duty officer to test the traffic lights by processing the access and lighting the corresponding traffic lights. This method can generally only test 1-2 traffic lights at a time, which is inefficient and requires meeting the prerequisites for processing the access. Therefore, a more convenient method is needed to test whether the traffic lights are intact, especially when replacing multiple traffic lights, in order to improve the test efficiency, shorten the maintenance time, and reduce the burden of on-site maintenance.

[0035] In the test method provided by the embodiment of the present invention, a special test of the signal light is realized. The method utilizes the integrated equipment and channels of the above interlocking system and the signal machine, introduces a light source test command, and allows the dispatch center or the local control room to quickly test the status of each signal light of the signal machine without interfering with normal use. Figure 2 Demonstrates the overall logic and principles.

[0036] The entire logic processing process includes four stages: indication reception, command issuance and logic processing, output, and display of terminal fault status.

[0037] 1. Indicates receipt.

[0038] The computer interlocking system operates in cycles, usually 250ms per cycle. In each cycle, it first receives and processes information, then receives and processes commands, then performs logical operations, and finally performs control output.

[0039] According to this principle, the information of each signal light is received sequentially through the first channel, and according to whether the current state of the signal machine to which the signal light belongs is in the test state, it is determined whether to send the light off display to the display terminal or display it according to the signal display principle. At the same time, the fault information of the signal light is received through the second channel, and the newly received fault information is compared with the existing information. The display content of the display terminal is controlled in combination with the comparison result. If the alarm information is in the normal state, the alarm map of the existing signal machine is cleared. If the alarm information still exists, the alarm map is maintained.

[0040] 2. Command issuance and logical processing.

[0041] Receive the signal test command from the first channel, and perform light source tests on the train signal, shunting signal, advance signal and repeat signal respectively by issuing different commands. After the information processing is completed, the test command begins to be processed. Determine whether the signal to be tested meets the test conditions, that is, whether the signal is not operating, and whether there is no car in the approach section; if the signal is not operating, and there is no car in the approach section, the test conditions are met. Specifically: For the test commands of the repeat signal and the advance signal, the status of the train signal is judged. First, it is determined whether the train signal has participated in the driving operation. The principle of judgment is whether the train signal is the beginning of the approach or slip section, and whether the guide signal has been opened. Secondly, the occupancy of the approach section of the train signal is determined. The test command is not allowed to be issued when the train approaches to ensure driving safety. When both the beginning and the approach section of the signal meet the conditions, the test command can be executed.

[0042] Those skilled in the art will understand that train signals, shunting signals, advance signals and repeater signals are different types of signals, and different types of signals contain different combinations of signal lights. For example, a train signal contains five types of signal lights: red, yellow, green, yellow and white.

[0043] For the same signal, in order to avoid the impact on the power supply caused by lighting all the signal lights at the same time, a group lighting strategy is adopted to reduce the system load. When the number of signal lights of a signal light is more than 4, it is divided into two groups for testing. For train signal lights, it generally includes 5-8 signal lights, the upper part is the first group, and the lower part is the second group. The staff can make specific divisions according to the actual situation. For example, the 1st to 4th are divided into the first group (the corresponding bits are recorded as bit0~bit3), and the 5th to 8th are divided into the second group (the corresponding bits are recorded as bit4~bit7). When testing each group, the first set time (for example, 3 seconds) is maintained on, in order to facilitate visual inspection and automatic identification of the system, and not to occupy the signal light for a long time.

[0044] Specifically: logically determine whether the signal is a train signal. If it is a train signal, execute the test method of lighting the signal lights in groups, divide the signal lights into two groups, record the grouping status through the grouping variable LPTTMS, and set the grouping variable LPTTMS to 2; if it is not a train signal, set the grouping variable LPTTMS to 1. Determine the light source test type through the command value, and set the corresponding bit of the signal test flag LPTST (for example, the train signal corresponds to bit 1) to 1 according to different light source test types. For the train signal, the signal light drive output variable OLPTJ sets the bit corresponding to each signal light to 1 according to the first group of light positions. For example, in combination with the above example, bit0-bit3 is set to 1 here, indicating that the corresponding signal light is lit, and setting it to 0 means turning off the light and maintaining the first set time (for example, 3 seconds). The signal lights of bit0-bit3 are controlled to light up through the signal light drive output variable OLPTJ; after the first set time is reached, the bit corresponding to each signal light in the signal light drive output variable OLPTJ is set to 0, the second set time (for example, 2 seconds) is paused, and the grouping variable LPTTMS is reduced by 1. Determine whether the grouping variable LPTTMS is 0; if LPTTMS is not 0, continue to test the next group, and execute the loop to set the train signal light drive output variable OLPTJ to set the bit corresponding to each signal light to 1 according to the next group of light positions. For example, in combination with the above example, bit4-bit7 is set to 1 here; if LPTTMS is 0, the test of the train signal is completed, and the corresponding bit of the signal test flag LPTST is set to 0. For non-train signals, no group test is performed, that is, all signal lights are tested together: the corresponding bit of the signal test flag LPTST (for example, bit2 for non-train signals) is set to 1, and the signal light drive output variable OLPTJ corresponding to all signal light bits is set to 1. For example, in combination with the above example, bit0-bit7 is set to 1 here, and the first set time is maintained. After the timing ends, bit2 of LPTST is set to 0. Since the test process takes a period of time, the test logic will continue for multiple control cycles until LPTST is 0 and ends.

[0045] 3. Control output.

[0046] Before the end of each control cycle, the calculation interlocking system converts the signal light drive output logic variable into the actual control output, and the signal module outputs the voltage to the corresponding signal light through the first channel.

[0047] 4. Display terminal fault status.

[0048] The solution provided by the embodiment of the present invention can automatically identify the lighted signal light, determine whether the signal light is intact, and automatically clear the fault prompt after repair without manual reconfirmation. During the light source test, the logic unit uploads the display terminal to the off light display.

[0049] Specifically, for the control of lighting the first group of signal lights, if the return is normal, the return result is recorded as normal, otherwise it is recorded as abnormal, and the next group of signal lights are controlled to light up; after the multiple groups of signal lights are lit up in sequence, the display terminal accumulates the return results of the multiple groups, determines the final test result and displays it, if all are normal, clears the alarm map, and the test is completed. When the test is completed, the signal display map on the display terminal returns to the same display as the outdoor one.

[0050] In the solution provided by the embodiment of the present invention, the interlocking relationship between the light source test logic and the interlocking logic is described as follows:

[0051] (1) The interlocking relationship between the light source test logic and the existing lighting logic.

[0052] The operator responds to the outdoor maintenance request and sends a specific command to the logic host on the display terminal. The logic host needs to break through the existing lighting logic and control the corresponding signal lights to light up for 3 seconds according to the specific light source test lighting logic. During this period, it is necessary to avoid conflicts with the existing lighting logic.

[0053] The existing signal display is mainly driven by computer interlocking LXJ (train signal relay), YXJ (guide signal relay), ZXJ (main line relay), TXJ (through route relay), and the control circuit built by these relays is used to light up the corresponding signal lights. The control output and display of the light source test are specific lighting logic, which is different from the existing signal display lighting rules. The displayed light combination is not a meaningful signal display. Therefore, when the light source test is executed, it is necessary to bypass the existing signal display control logic and execute special logic to light up the signal light; and the interlocking logic cannot be judged as a chaotic display, and fail-safe measures cannot be executed.

[0054] Another problem is that the existing lighting logic will control the signal machine to light up the prohibition light, such as the red light, when there is no control output. Therefore, when performing the light source test, it is necessary to shield the output of the existing red light through the light source test status value.

[0055] (2) Interlocking conditions between light source test and other interlocking functions.

[0056] For the logical conditions of the light source test, the driving operation is not performed, including not the route start, not the protected route period, not the target signal, and not the side protection signal. The light source test function is disabled during the use of the signal. Conversely, during the light source test, it is prohibited to use the signal to handle the route or provide side protection.

[0057] For ease of understanding, an example of the light source test command operation process is provided below.

[0058] In this example, the entire process from issuing a light source test command to executing it is described in detail. The specific steps are as follows:

[0059] (1) Signal light failure: Assume that the train signal (numbered S1) and the shunting signal D1 at a station fail successively. On the operation terminal, the fault map is displayed outside the graphic symbols of the S1 and D1 signals. After the dispatcher finds the fault alarm, he notifies the maintenance personnel to carry out repairs.

[0060] (2) Test command initiation: Maintenance personnel arrive at the scene and replace the faulty signal lights one by one. Then, they contact the dispatcher to request a light source test. The dispatcher selects the light source test function for signal S1 or S1's repeater signal or advance signal on the display terminal and clicks Confirm.

[0061] (3) Command transmission: The display terminal software generates the S1 light source test command packet, which contains information such as the signal machine number, test command code, and execution timestamp, and transmits it to the logic unit.

[0062] (4) Signal response: After receiving the command, the logic unit immediately parses the signal S1 and confirms that the current state of the signal meets the execution conditions (i.e., it is not related to vehicle operation). After confirmation, the logic unit sends a lighting command sequence to the signal light.

[0063] (5) Group lighting test: The train signal S1 lights up the signal lights in groups according to the preset logic. The signal module first lights up the signal lights 1, 2, 3, and 4 and monitors them. They are lit for 3 seconds, and the acquisition module collects the fault status of the signal lights 1, 2, 3, and 4. Then, the signal module lights up the remaining signal lights.

[0064] (6) Fault determination and feedback: Finally, comprehensively determine the status of all signal lights. If they are all normal, clear the fault display on the display terminal. If the signal light is still faulty, the system automatically records the fault information and maintains the fault display next to the signal icon. After the repair is completed, the light source test command can be sent again for retesting to verify the repair status again.

[0065] (7) Shunting signal light source test: For shunting signal D1, the dispatcher will issue a light source test command on D1, and all the signal lights of the shunting signal will light up for 3 seconds at a time. The acquisition module will collect the status of the signal lights. The status of all signal lights will be comprehensively judged. If they are all normal, the fault display on the display terminal will be cleared.

[0066] (8) Protection against misoperation: The light source test command is operated by entering a password to avoid misoperation caused by accidental mouse touch.

[0067] The dual-channel connection and signal light source test solution provided by the present invention is for signal machines, and dual channels are constructed between the interlocking system and each signal light to solve the problem of multiple signal light fault alarms. After the signal light is replaced, the integrity of each signal light of a signal machine can be quickly and completely tested, and the fault information of the computer interlocking human-machine interface can be automatically calculated to provide a judgment on whether the maintenance work is completed. The above solution not only has comprehensive and complete alarms, but also can verify whether the signal light replacement work of the signal machine is completed in a relatively short time, quickly and efficiently identify whether the faulty signal light has been restored, shorten maintenance time, and reduce the burden of on-site maintenance.

[0068] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above embodiments can be implemented by software, or by means of software plus necessary general hardware platforms. Based on such understanding, the technical solutions of the above embodiments can be embodied in the form of software products, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0069] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A dual-channel connection method for computer interlocking and signal lights, characterized in that: include: Connect each signal unit to the signal lights on each signal one by one; The signal module of the computer interlocking system is connected to each signal unit to form a first channel, and the lighting and extinguishing of the signal light are controlled and supervised through the first channel; the acquisition module of the computer interlocking system is connected to each signal unit to form a second channel, and the fault status of the signal light is supervised through the second channel.

2. A computer interlocking and signal light dual-channel connection method according to claim 1, characterized in that: The signal module of the computer interlocking system is connected to each signal unit to form a first channel, and the lighting and extinguishing of the signal light are controlled and supervised through the first channel, including: The signal module comprises multiple channels, each of which is connected to a signal machine unit to form a first channel; Each channel of the signal module is provided with two connection ports, both ports are connected to the signal machine unit. When the control signal light is off, the corresponding port of the signal module does not output voltage. When the control signal light is on, the corresponding two ports of the signal module output voltage.

3. A computer interlocking and signal light dual-channel connection method according to claim 1, characterized in that: Connect the acquisition module of the computer interlocking system with each signal unit to form a second channel. The monitoring of the signal light fault status through the second channel includes: The acquisition module comprises multiple channels, each of which is connected to a signal unit to form a second channel; Each channel of the acquisition module is equipped with two connection ports, one of which is connected to the signal unit and the other is connected to the acquisition common line; When the control signal light is off, the acquisition module retrieves the internal relay status of the signal unit through the corresponding port to monitor whether the corresponding signal light is faulty; when the control signal light is on, if the signal light is faulty, the acquisition module retrieves the status through the two ports to monitor that the corresponding signal light is off, thereby determining that the signal light is faulty.

4. A method for connecting a computer interlocking and a signal light via two channels according to any one of claims 1 to 3, characterized in that: The computer interlocking system further comprises: a logic host and a display terminal. The signal module and the acquisition module are respectively connected to the logic host. The logic host displays the status of each signal light through the display terminal.

5. A signal light source testing method, characterized in that: The method described in any one of claims 1 to 4 is used to realize the dual-channel connection between the computer interlocking and the signal light, and then the signal light source test is performed, the steps comprising: Receive a signal light test command through the first channel, determine whether the signal light to be tested meets the test conditions, if the test conditions are met, determine whether the signal light to be tested is a train signal light, if so, divide the signal lights of the train signal light into multiple groups, and adopt a group lighting strategy for testing, and generate a signal light drive output logic variable, if not, test the signal lights of the signal light to be tested together, and generate a signal light drive output logic variable; Convert the signal light drive output logic variable into actual control output, and output it through the first channel by the signal module; The acquisition module is used to monitor the fault status of the signal light through the second channel, determine the test result of the signal light, and display it through the display terminal.

6. A signal light source testing method according to claim 5, characterized in that: The step of determining whether the signal to be tested meets the test conditions includes: Determine whether there is no vehicle operation at the signal and whether there is no vehicle in the approach section; if there is no vehicle operation at the signal and there is no vehicle in the approach section, the test conditions are met.

7. A signal light source testing method according to claim 5, characterized in that: The method of dividing the signal lights of the train signal into multiple groups and adopting a group lighting strategy for testing includes: For train signals, set the corresponding bit of the signal test flag LPTST to 1; Divide the traffic lights into two groups, record the grouping status through the grouping variable LPTTMS, and set the grouping variable LPTTMS to 2; The signal light drive output variable OLPTJ sets the bit corresponding to each signal light to 1 according to the first group of light positions, and maintains the first set time. After the first set time is reached, the bit corresponding to each signal light in the signal light drive output variable OLPTJ is set to 0, the second set time is paused, and the grouping variable LPTTMS is reduced by 1; Determine whether the grouping variable LPTTMS is 0; if LPTTMS is not 0, continue to test the next group, and loop to set the train signal light drive output variable OLPTJ to 1 according to the next group of light positions; if LPTTMS is 0, the test of the train signal is completed, and the corresponding bit of the signal test flag LPTST is set to 0.

8. A signal light source testing method according to claim 5, characterized in that: The step of testing the signal lights of the signal to be tested includes: For non-train signals, set the corresponding bit of the signal test flag LPTST to 1; The signal light drive output variable OLPTJ corresponding to all signal light bits is set to 1, and the first set time is maintained. After the timing is over, the corresponding bit of the signal light test flag LPTST is set to 0.

9. A signal light source testing method according to claim 5, characterized in that: The method further includes: receiving the signal machine test command through the first channel; The display information of each signal light is received through the first channel, and according to whether the current state of the signal light is in the test state, it is determined whether to send a light-off display to the display terminal or to display it according to the signal display principle; the fault information is received through the second channel and compared with the existing information, and the display content of the display terminal is controlled based on the comparison result.

10. A method for testing a light bulb light source according to claim 9, characterized in that: Determining the signal light test result of the signal light includes: For controlling the lighting of the first group of signal lights, if the information is returned normally, the returned result is recorded as normal, otherwise it is recorded as abnormal and the next group of signal lights are controlled to light up. After completing the sequential control of lighting up multiple groups of signal lights, the display terminal accumulates the returned results of all groups, determines the final test result and displays it. If they are all normal, the alarm map is cleared and the detection is completed.

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