Signal machine flashing monitoring method and system based on full-electronic interlocking

Abstract

The invention provides a signal machine flashing light monitoring method and system based on full-electronic interlocking, the monitoring method is applied to a monitoring system comprising an interlocking machine and a flashing light power supply, and the monitoring method specifically comprises the steps that in response to a control demand, the interlocking machine outputs a flashing light driving signal to a signal machine, and the signal machine is driven to execute flashing light; filament current and on-off state of each lamp position of the signal machine are collected in real time, and signal machine flashing fault detection is carried out according to the filament current and on-off state of each lamp position; and when a signal machine flashing light fault is detected, the fault type is identified according to a fault detection result, and a corresponding operation and maintenance strategy is formulated. According to the invention, through real-time acquisition and linkage analysis of two parameters of filament current and on-off state, flashing lamp fault identification requirements under full-electronic interlocking are met, the problem of misjudgment caused by frequent fluctuation of current is avoided, other fault types possibly existing in the flashing lamp control process can be further covered, the fault missed judgment risk is reduced, and the working efficiency is improved. And the safety of flashing display of the signal lamp is ensured.

Description

Technical Field

[0001] This invention relates to the field of rail transit signal control technology, and in particular to a method and system for monitoring the flashing lights of signal lights based on fully electronic interlocking. Background Technology

[0002] In traditional relay interlocking systems, signal flashing control is primarily achieved through relay combinations. First, a flashing relay generates a pulse power supply to drive a signal flashing relay. Then, a flashing relay corresponding to a specific signal light triggers the light to flash. Simultaneously, a flashing monitoring relay monitors the operational status in real time to ensure the safety and accuracy of the flashing display. Monitoring the operational status of signal flashing primarily focuses on filament breakage faults. This is achieved by recording the average filament current at each light position during flashing and comparing it to a set threshold. However, this approach is relatively simplistic in terms of data and fault monitoring, easily overlooking other faults that may exist during signal flashing control.

[0003] With the technological upgrade of rail transit signaling systems, they have gradually evolved from computer interlocking to fully electronic interlocking. The control method of signal lighting circuits has also gradually changed from traditional relay combination control to direct drive by fully electronic boards on the interlocking machine. As the drive control method of signal lighting circuits changes, the flashing light operation characteristics under fully electronic interlocking drive change to flashing lights alternating on and off with a fixed duty cycle. Within a fixed time period, the filament current frequently switches between high and low values. Under these circumstances, the traditional method of fault detection based on average filament current cannot accurately determine the true state of the flashing light filament. Fault detection based on a single current dimension cannot achieve comprehensive monitoring of signal flashing lights, easily leading to missed or incorrect fault detection. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies that use average current to detect flashing signal light faults, which are unsuitable for fully electronic interlocking control of flashing lights and have a single fault detection dimension, making them prone to missed or incorrect fault detection. This invention provides a flashing signal light monitoring method and system based on fully electronic interlocking. Through real-time acquisition and linkage analysis of dual parameters—filament current and on / off state—it adapts to the fault identification requirements of flashing lights under fully electronic interlocking, avoids misjudgments caused by frequent current fluctuations, and further covers other fault types that may exist during flashing light control, reducing the risk of missed fault detection and ensuring the safety of flashing signal light displays.

[0005] The objective of this invention is achieved through the following technical solution: Signal flashing light monitoring method based on fully electronic interlocking includes: In response to control requirements, the interlocking machine outputs a flashing light drive signal to the signal machine, which then drives the signal machine to flash the lights. Real-time acquisition of filament current and on / off status of each lamp position of the signal, and detection of signal flashing faults based on filament current and on / off status of each lamp position; When a signal light flashing fault is detected, the fault type is identified based on the fault detection results, and corresponding operation and maintenance strategies are formulated.

[0006] Furthermore, in response to a control request, the interlocking machine outputs a flashing light drive signal to the signal controller, driving the signal controller to flash the lights, including: Based on vehicle control commands and corresponding lighting control mapping rules, identify the control requirements for signal flashing light control; In response to control requirements, the interlocking system generates a corresponding flashing light drive signal and outputs it to the signal controller; The signal controller controls the on / off state and flashing mode of the corresponding light position according to the flashing light drive signal, and executes the flashing action.

[0007] Furthermore, the real-time acquisition of filament current and on / off status of each lamp position of the signal, and the detection of signal flashing faults based on the filament current and on / off status of each lamp position, includes: The signal controller identifies the running lamp position based on the flashing light drive signal, collects the filament current of each running lamp position in real time, and records the on / off timing of each running lamp position simultaneously. Based on a preset current threshold, filament faults are detected by the filament current of each operating lamp position. Based on the filament fault detection results, the flashing light power supply fault of the signal machine is detected according to the on / off timing of each operating lamp position.

[0008] Furthermore, the step of detecting filament faults based on the filament current of each operating lamp position according to a preset current threshold includes: The filament current value of each operating lamp position is compared with a preset current threshold, which is the filament breakage current threshold. Count the number of times the filament current value of each operating lamp position falls below the filament breakage current threshold per unit time; When the filament current value of a running lamp position falls below the filament breakage current threshold a predetermined number of times within a unit of time, it is determined that there is a filament breakage fault in the flashing lamp.

[0009] Furthermore, the method of detecting filament faults based on the filament current of each operating lamp position according to a preset current threshold also includes: The filament current value of each operating lamp position is compared with a preset current threshold, which is an overcurrent threshold. The duration of overcurrent exceeding the overcurrent threshold for each operating lamp position is recorded. When the continuous overcurrent time of a running lamp reaches the preset overcurrent time threshold, it is determined that there is a filament overcurrent fault.

[0010] Furthermore, the method of detecting filament faults based on the filament current of each operating lamp position according to a preset current threshold also includes: The filament current value of each operating lamp position is compared with a preset current threshold, which includes a filament breakage current threshold and a lamp lighting current threshold. The duration of continuous half-brightness when the filament current value of each operating lamp position is lower than the lighting current threshold but higher than the filament breakage current threshold is recorded. If the continuous half-brightness time of a running lamp exceeds the preset half-brightness time threshold, it is determined that there is a filament half-brightness fault.

[0011] Furthermore, the detection of flashing power supply faults in the signal system, based on the filament fault detection results and the on / off timing of each operating lamp position, includes: When no filament fault is detected, the standard on / off sequence of each operating lamp position is obtained based on the flashing drive signal; The consistency between the on / off timing of each operating lamp position and the corresponding standard on / off timing is verified. If the on / off timing of one operating lamp fails the consistency check, it is determined that there is a flashing lamp power supply fault.

[0012] Furthermore, the step of identifying the fault type based on the fault detection results and formulating corresponding operation and maintenance strategies includes: Based on the fault detection results, identify the fault type and determine the fault level of the current fault according to the fault type; Based on the fault level and fault type, match the processing time limit and maintenance measures to obtain the maintenance strategy; Based on the fault detection results, corresponding fault codes are generated, and fault alarms are issued based on the fault codes and operation and maintenance policies.

[0013] A signal flashing light monitoring system based on fully electronic interlocking, used to execute any of the above-mentioned signal flashing light monitoring methods based on fully electronic interlocking, is connected to a signal with several light positions, including: The interlocking unit includes a drive module, a signal acquisition module, and a fault identification module; The drive module is used to respond to control requirements by outputting a flashing light drive signal to the signal controller, thereby driving the signal controller to flash the lights. The signal acquisition module is used to acquire the filament current and on / off status of each lamp position of the signal machine in real time; The interlocking calculation module is used to detect signal light flashing faults based on the filament current and on / off status of each lamp position. When a signal light flashing fault is detected, the module identifies the fault type based on the fault detection results, formulates corresponding operation and maintenance strategies, and generates corresponding fault codes. The flashing light power supply is used to alternately power on and off the signal in a pulse manner.

[0014] Furthermore, the interlocking mechanism also includes: The alarm module is used to generate fault alarms based on fault codes and operation and maintenance policies.

[0015] The beneficial effects of this invention are: Addressing the characteristics of alternating on / off flashing lights with a fixed duty cycle and frequent current fluctuations under fully electronic interlocking, this system no longer relies on fuzzy judgments based on average current values. Instead, it adapts fault identification to current fluctuation scenarios by using filament current and on / off status, avoiding misjudgments in fully electronic interlocking flashing light control. Furthermore, by pre-setting multiple thresholds such as broken filament current threshold, overcurrent threshold, and lighting current threshold, combined with quantitative analysis methods such as fault count statistics and duration determination within a unit of time, it accurately identifies broken filament faults while comprehensively covering filament-related faults such as filament overcurrent and half-lit filaments. Simultaneously, by verifying the consistency of the on / off timing with standard timing, it further detects flashing light power supply faults after ruling out filament faults, achieving comprehensive fault detection for flashing light control. Moreover, by identifying fault types, classifying fault levels, matching maintenance measures, and generating fault codes and alarms, it clarifies the handling time limits and operating procedures for different faults, improving the efficiency of fault handling in signal flashing light control and ensuring the safety of signal flashing light control. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a process of the present invention; Figure 2 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0017] The components include: 1. Interlocking machine, 11. Drive module, 12. Signal acquisition module, 13. Fault identification module, 14. Alarm module, 2. Flashing power supply, and 3. Signal device. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example: Signal flashing light monitoring method based on fully electronic interlocking, such as Figure 1 As shown, it includes: In response to control requirements, the interlocking machine outputs a flashing light drive signal to the signal machine, which then drives the signal machine to flash the lights. Real-time acquisition of filament current and on / off status of each lamp position of the signal, and detection of signal flashing faults based on filament current and on / off status of each lamp position; When a signal light flashing fault is detected, the fault type is identified based on the fault detection results, and corresponding operation and maintenance strategies are formulated.

[0020] In the scenario of fully electronic interlocking flashing light control, the flashing light control logic is centralized control of the interlocking machine and direct drive of the board. The signal machine, as the execution unit, does not have the ability to independently judge the flashing light demand. It cannot identify the flashing light scenario in rail transit operation, nor can it independently generate the flashing light sequence.

[0021] Therefore, when the rail transit signaling system generates a flashing light control requirement, such as when a signal needs to flash for signal guidance or fault warning on a specific line, the interlocking machine, as the control unit, will actively generate and output a corresponding flashing light drive signal to the signal. The flashing light drive signal directly instructs the signal to execute the flashing light action. Wherein, in response to control requirements, the interlocking machine outputs a flashing light drive signal to the signal controller, driving the signal controller to execute flashing light operation, including: Based on vehicle control commands and corresponding lighting control mapping rules, identify the control requirements for signal flashing light control; In response to control requirements, the interlocking system generates a corresponding flashing light drive signal and outputs it to the signal controller; The signal controller controls the on / off state and flashing mode of the corresponding light position according to the flashing light drive signal, and executes the flashing action.

[0022] Upon receiving a vehicle control command, the system first filters out vehicle control commands that require flashing lights by matching keywords related to flashing light control, such as yellow light and flashing lights.

[0023] Then, based on the vehicle control command, the corresponding light control mapping rule is matched from the preset light control mapping rule library to determine the flashing requirements corresponding to the vehicle control command. The flashing requirements specifically include the target light position, flashing mode, and duration.

[0024] Upon receiving a flashing light request, the interlocking machine outputs a corresponding flashing light drive signal to enable the signal circuit. To illuminate the flashing light, the drive signal is set to a stable high level; to extinguish the flashing light, it is set to a low level. The generated drive signal is transmitted directionally to the target signal via a hardwired link to drive the corresponding signal to perform the flashing action. Each light position on the target signal is equipped with a corresponding drive port. When transmitting the drive signal to the target signal, the interlocking machine can further select the target signal's drive port to transmit the flashing drive signal based on the target light position in the flashing light request, thereby driving the corresponding light position to flash.

[0025] Furthermore, the flashing power supply of the fully electronic interlocking system has multiple sets of switchable frequency units, which correspond to the flashing mode requirements commonly found in rail transit scenarios. The activation logic of each frequency unit is bound to the lighting control mapping rules. While generating a stable high-level drive signal, the interlocking machine will trigger the signal to activate the corresponding frequency flashing power supply through another control signal.

[0026] Based on the basic flashing frequency provided by the flash power supply, the duty cycle of the signal lights can be adjusted by further combining timing pulse superposition. Specifically, during a stable high-level period, high-frequency, small-amplitude timing pulses can be sent to the signal to control the high-frequency switching of the solid-state switching elements inside the signal. This, in conjunction with external energy storage components, adjusts the actual on / off duration of the signal circuit, thereby refining the duty cycle parameters of the flashing mode while maintaining a fixed flash power supply frequency.

[0027] Due to the characteristic of the signal lights in a fully electronic interlocking system to alternately turn on and off with a fixed duty cycle, the filament current will fluctuate frequently between high and low or zero values ​​during the flashing process. If only the average current is collected for fault detection, it is easily affected by the low current when the light is off, which will reduce the average current value and lead to a misjudgment of filament breakage fault. Moreover, it cannot cover other faults in the flashing control.

[0028] Therefore, during the flashing of the signal lights, the filament current value and the on / off status are collected simultaneously. By linking the filament current value and the on / off timing, comprehensive fault detection of the flashing light control can be achieved.

[0029] The real-time acquisition of filament current and on / off status of each lamp position of the signal, and the detection of signal flashing faults based on the filament current and on / off status of each lamp position, includes: The signal controller identifies the running lamp position based on the flashing light drive signal, collects the filament current of each running lamp position in real time, and records the on / off timing of each running lamp position simultaneously. Based on a preset current threshold, filament faults are detected by the filament current of each operating lamp position. Based on the filament fault detection results, the flashing light power supply fault of the signal machine is detected according to the on / off timing of each operating lamp position.

[0030] First, locate the running lamp position using the flashing light drive signal to avoid invalid acquisition of non-flashing lamp positions and reduce resource waste.

[0031] After determining the operating light position, the corresponding filament current is collected by a current sensor connected in series in the signal light position circuit. The collection frequency matches the flashing cycle, and the current value and timestamp of each collection must be recorded synchronously. At the same time, a photoelectric sensor installed next to the operating light position collects the on / off status of the operating light position in real time, and the switching time is marked with a timestamp.

[0032] During flashing light control, when the filament is functioning normally, the filament current at the operating position will stabilize within the normal lighting range. When the number of broken or damaged filaments reaches a certain threshold, the current will significantly decrease to below the broken filament boundary value. When the filament is short-circuited or the power supply is abnormal, the current will exceed the overcurrent threshold. When partial damage occurs, the current will fall between the normal lighting value and the broken filament boundary value. Based on the correlation between the filament's operating state and the circuit current, corresponding preset current thresholds are set for common faults such as broken filaments, half-brightness, and overcurrent faults that frequently occur during signal flashing light control, in order to achieve corresponding fault detection.

[0033] For filament breakage faults, the method of detecting filament faults based on a preset current threshold and by measuring the filament current at each operating lamp position includes: The filament current value of each operating lamp position is compared with a preset current threshold, which is the filament breakage current threshold. Count the number of times the filament current value of each operating lamp position falls below the filament breakage current threshold per unit time; When the filament current value of a running lamp position falls below the filament breakage current threshold a predetermined number of times within a unit of time, it is determined that there is a filament breakage fault in the flashing lamp.

[0034] The filament breakage current threshold is set as the critical current when the number of filaments completely break or the number of damaged filaments reaches a certain level, and can be set in conjunction with the rated operating current of the signal light position.

[0035] Furthermore, considering that in fully electronically interlocked flashlight control, the flashlights alternately turn on and off with a certain duty cycle, resulting in frequent changes in current value per unit time, with some flashlights remaining at low or zero values ​​for extended periods, a method is used to determine if a flashlight filament fault exists by counting the number of times the filament current value falls below the filament breakage current threshold per unit time. The specific unit time and predetermined threshold number are set according to the flashlight frequency.

[0036] For overcurrent faults, the method of detecting filament faults based on a preset current threshold and the filament current of each operating lamp position also includes: The filament current value of each operating lamp position is compared with a preset current threshold, which is an overcurrent threshold. The duration of overcurrent exceeding the overcurrent threshold for each operating lamp position is recorded. When the continuous overcurrent time of a running lamp reaches the preset overcurrent time threshold, it is determined that there is a filament overcurrent fault.

[0037] The overcurrent threshold is the upper limit of the safe operating current of the filament. For example, for a lamp with a rated current of 3A, the overcurrent threshold is set to 5A. Exceeding this value will cause the filament to overheat and burn out or the circuit to trip.

[0038] Since fluctuations in grid voltage and the start-up and shutdown of adjacent equipment can cause momentary overcurrent exceeding the overcurrent threshold, these fluctuations do not cause substantial damage to the filament and do not need to be considered a fault. Therefore, the duration of overcurrent when the filament current exceeds the overcurrent threshold is statistically analyzed and compared with the corresponding preset overcurrent time threshold. When the duration of overcurrent reaches the corresponding threshold, the current overcurrent condition is determined to be a persistent problem, and an overcurrent fault exists. The preset overcurrent time threshold can be set according to actual needs.

[0039] For half-brightness faults, the method of detecting filament faults based on the filament current of each operating lamp position according to a preset current threshold also includes: The filament current value of each operating lamp position is compared with a preset current threshold, which includes a filament breakage current threshold and a lamp lighting current threshold. The duration of continuous half-brightness when the filament current value of each operating lamp position is lower than the lighting current threshold but higher than the filament breakage current threshold is recorded. If the continuous half-brightness time of a running lamp exceeds the preset half-brightness time threshold, it is determined that there is a filament half-brightness fault.

[0040] While a partially lit lamp due to filament damage may not cause an immediate malfunction, it is generally a precursor to a broken filament and requires an alarm. Therefore, a lighting current threshold is set based on the minimum current required for normal lamp illumination, and this threshold, combined with the set broken filament current threshold, is used to detect partially lit lamps.

[0041] Considering that the filament current may be temporarily in the half-bright range due to factors such as the moment the lamp is started or a brief voltage drop, this is a normal phenomenon and does not need to be judged as a fault. Therefore, the duration of the half-bright range is counted. If the duration of the half-bright range exceeds the preset half-bright time threshold, it can be determined that the filament is partially damaged. Although it is not completely broken, the brightness no longer meets the relevant signal display requirements, and there is a half-bright fault.

[0042] If there is a filament problem at the flash unit, such as a broken filament causing no light or half-brightness causing abnormal brightness, the abnormal on / off timing is caused by the filament itself, not the flash power supply. Performing power supply fault detection simultaneously could lead to misdiagnosis. Therefore, further flash power supply fault detection should be triggered based on the filament fault detection results.

[0043] The step of detecting flashing power supply faults in the signal controller based on the filament fault detection results and the on / off timing of each operating lamp position includes: When no filament fault is detected, the standard on / off sequence of each operating lamp position is obtained based on the flashing drive signal; The consistency between the on / off timing of each operating lamp position and the corresponding standard on / off timing is verified. If the on / off timing of one operating lamp fails the consistency check, it is determined that there is a flashing lamp power supply fault.

[0044] The flashing drive signal already includes preset flashing control parameters, such as flashing frequency and duty cycle. Based on the flashing control parameters, a standard on / off sequence for each operating lamp position is constructed, including the on / off cycle, single on duration, single off duration, and switching time reference.

[0045] Based on the constructed standard on / off timing sequence, the consistency of the collected on / off timing sequence is checked. The corresponding on / off period, duty cycle and switching time are compared. If the deviation of any parameter exceeds the preset corresponding threshold, the consistency check is judged to have failed.

[0046] Assuming filament faults have been ruled out and the lamp's own luminous capability is normal, the key to controlling the flash sequence lies in the power supply rhythm of the flash power supply. The core function of the flash power supply is to output periodic pulsating current, which drives the lamp to light up or off by switching the current on and off. If the power supply malfunctions, it will directly cause the power supply rhythm received by the lamp to deviate from the standard, thus resulting in a discrepancy between the actual flash sequence and the standard sequence.

[0047] Therefore, if the consistency check fails, it can be determined that there is a power supply fault in the flashing light.

[0048] After completing the corresponding fault detection, if the corresponding fault is identified, in order to avoid affecting the operation of rail transit, it is necessary to further combine the fault detection results to build a corresponding operation and maintenance strategy to quickly handle the fault.

[0049] The step of identifying the fault type based on the fault detection results and formulating corresponding operation and maintenance strategies includes: Based on the fault detection results, identify the fault type and determine the fault level of the current fault according to the fault type; Based on the fault level and fault type, match the processing time limit and maintenance measures to obtain the maintenance strategy; Based on the fault detection results, corresponding fault codes are generated, and fault alarms are issued based on the fault codes and operation and maintenance policies.

[0050] The current fault type is determined based on the current threshold triggering condition in filament fault detection and the timing verification result in power supply fault detection. The fault level of the current fault is obtained according to the preset mapping relationship between fault type and fault level.

[0051] The fault levels specifically include Level 1 faults and Level 2 faults. Level 1 faults are those that directly affect driving safety and cause signal display failure, including filament breakage faults and flashing light power supply faults. Level 2 faults are those that do not affect signal transmission but only pose performance risks, including filament overcurrent faults and filament half-brightness faults.

[0052] The processing time limit is matched according to the fault level. For a level 1 fault, the signal display will fail, and delays may cause train misjudgments. Therefore, a shorter processing time limit needs to be set. For level 2 faults, since it is not allowed to affect the signal function at the moment, maintenance can be carried out in conjunction with the operation intervals, and the processing time limit can be appropriately extended.

[0053] Furthermore, corresponding maintenance measures should be matched according to the corresponding fault type. It should be noted that for filament breakage faults, flash power supply faults, and filament overcurrent faults, in order to avoid the expansion of their impact, the corresponding flash drive signal should be cut off immediately when the relevant fault is detected, and then corresponding maintenance measures for handling the corresponding fault should be formulated in the future.

[0054] Among them, for filament breakage faults, the maintenance measures include matching and replacing the filament assembly at the faulty lamp position.

[0055] For filament overcurrent faults, corresponding maintenance measures should be taken to check whether the power supply circuit is short-circuited.

[0056] For a filament half-brightness fault, the number of damaged filament assemblies inside the lamp position is matched and detected. If the proportion of damaged filament assemblies exceeds the corresponding proportion threshold, the filament assemblies are replaced. If the proportion does not exceed the threshold, the lamp position lens is cleaned.

[0057] For flash power supply failures, the maintenance measures to replace the flash power supply should be implemented accordingly.

[0058] Further, a fault code is generated based on the fault detection results. The fault code includes a fault type identifier, a fault lamp position identifier, and a fault characteristic identifier. Based on the fault code and the operation and maintenance policy, a corresponding alarm is issued to prompt the operation and maintenance personnel to carry out fault handling.

[0059] Specifically, the alarm for signal light malfunction can be triggered by displaying the corresponding fault code and maintenance strategy on the human-machine interface of the interlocking machine and issuing the corresponding audible and visual alarm.

[0060] Another aspect of this embodiment also provides a signal flashing light monitoring system based on fully electronic interlocking, which is connected to a signal 3 with several light positions, such as... Figure 2 As shown, it includes: Interlocking unit 1 includes a drive module 11, a signal acquisition module 12, and a fault identification module 13; The drive module is used to respond to control requirements by outputting a flashing light drive signal to the signal controller, thereby driving the signal controller to flash the lights. The signal acquisition module is used to acquire the filament current and on / off status of each lamp position of the signal machine in real time; The interlocking calculation module is used to detect signal light flashing faults based on the filament current and on / off status of each lamp position. When a signal light flashing fault is detected, the module identifies the fault type based on the fault detection results, formulates corresponding operation and maintenance strategies, and generates corresponding fault codes. Flashing light power supply 2 is used to alternately power on and off the signal in a pulse manner.

[0061] The interlocking mechanism also includes: Alarm module 14 is used to generate fault alarms based on fault codes and operation and maintenance policies.

[0062] The drive module, signal acquisition module, fault identification module, and alarm module are all installed on the interlocking machine. The signal acquisition module includes a current sensor and a photoelectric sensor, which can collect the filament current and on / off status of each lamp position of the signal.

[0063] Both the drive module and the fault identification module are microprocessors, computers, or other devices with corresponding data processing capabilities. They carry relevant algorithm programs for drive signal generation and fault identification, and are equipped with corresponding communication interfaces. They can be connected to corresponding databases to obtain the required data, and can also receive external instructions to identify control requirements.

[0064] The alarm module includes an audible and visual alarm, which can issue a corresponding audible and visual alarm when a fault is detected.

[0065] The flash power supply is an AC power source that can alternately power on and off in a pulse mode, and it is equipped with multiple switchable frequency units, allowing the output frequency to be adjusted as needed.

[0066] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A signal light flashing monitoring method based on fully electronic interlocking, characterized in that, include: In response to control requirements, the interlocking machine outputs a flashing light drive signal to the signal machine, which then drives the signal machine to flash the lights. Real-time acquisition of filament current and on / off status of each lamp position of the signal, and detection of signal flashing faults based on filament current and on / off status of each lamp position; When a signal light flashing fault is detected, the fault type is identified based on the fault detection results, and corresponding operation and maintenance strategies are formulated.

2. The signal light monitoring method based on fully electronic interlocking according to claim 1, characterized in that, In response to a control request, the interlocking machine outputs a flashing light drive signal to the signal controller, driving the signal controller to flash the lights, including: Based on vehicle control commands and corresponding lighting control mapping rules, identify the control requirements for signal flashing light control; In response to control requirements, the interlocking system generates a corresponding flashing light drive signal and outputs it to the signal controller; The signal controller controls the on / off state and flashing mode of the corresponding light position according to the flashing light drive signal, and executes the flashing action.

3. The signal light monitoring method based on fully electronic interlocking according to claim 1, characterized in that, The real-time acquisition of filament current and on / off status of each lamp position of the signal, and the detection of signal flashing faults based on the filament current and on / off status of each lamp position, includes: The signal controller identifies the running lamp position based on the flashing light drive signal, collects the filament current of each running lamp position in real time, and records the on / off timing of each running lamp position simultaneously. Based on a preset current threshold, filament faults are detected by the filament current of each operating lamp position. Based on the filament fault detection results, the flashing light power supply fault of the signal machine is detected according to the on / off timing of each operating lamp position.

4. The signal light monitoring method based on fully electronic interlocking according to claim 3, characterized in that, The method of detecting filament faults based on the filament current of each operating lamp position, using a preset current threshold, includes: The filament current value of each operating lamp position is compared with a preset current threshold, which is the filament breakage current threshold. Count the number of times the filament current value of each operating lamp position falls below the filament breakage current threshold per unit time; When the filament current value of a running lamp position falls below the filament breakage current threshold a predetermined number of times within a unit of time, it is determined that there is a filament breakage fault in the flashing lamp.

5. The signal light monitoring method based on fully electronic interlocking according to claim 3, characterized in that, The method of detecting filament faults based on the filament current of each operating lamp position according to a preset current threshold also includes: The filament current value of each operating lamp position is compared with a preset current threshold, which is an overcurrent threshold. The duration of overcurrent exceeding the overcurrent threshold for each operating lamp position is recorded. When the continuous overcurrent time of a running lamp reaches the preset overcurrent time threshold, it is determined that there is a filament overcurrent fault.

6. The signal light monitoring method based on fully electronic interlocking according to claim 3, characterized in that, The method of detecting filament faults based on the filament current of each operating lamp position according to a preset current threshold also includes: The filament current value of each operating lamp position is compared with a preset current threshold, which includes a filament breakage current threshold and a lamp lighting current threshold. The duration of continuous half-brightness when the filament current value of each operating lamp position is lower than the lighting current threshold but higher than the filament breakage current threshold is recorded. If the continuous half-brightness time of a running lamp exceeds the preset half-brightness time threshold, it is determined that there is a filament half-brightness fault.

7. The signal light monitoring method based on fully electronic interlocking according to claim 3, characterized in that, The method of combining filament fault detection results and detecting flashing power supply faults of the signal horn based on the on / off timing of each operating lamp position includes: When no filament fault is detected, the standard on / off sequence of each operating lamp position is obtained based on the flashing drive signal; The consistency between the on / off timing of each operating lamp position and the corresponding standard on / off timing is verified. If the on / off timing of one operating lamp fails the consistency check, it is determined that there is a flashing lamp power supply fault.

8. The signal light monitoring method based on fully electronic interlocking according to claim 1, characterized in that, The process of identifying fault types based on fault detection results and formulating corresponding operation and maintenance strategies includes: Based on the fault detection results, identify the fault type and determine the fault level of the current fault according to the fault type; Based on the fault level and fault type, match the processing time limit and maintenance measures to obtain the maintenance strategy; Based on the fault detection results, corresponding fault codes are generated, and fault alarms are issued based on the fault codes and operation and maintenance policies.

9. A signal light flashing monitoring system based on fully electronic interlocking, used to execute the signal light flashing monitoring method based on fully electronic interlocking as described in any one of claims 1 to 8, connected to a signal with a plurality of light positions, characterized in that, include: The interlocking unit includes a drive module, a signal acquisition module, and a fault identification module; The drive module is used to respond to control requirements by outputting a flashing light drive signal to the signal controller, thereby driving the signal controller to flash the lights. The signal acquisition module is used to acquire the filament current and on / off status of each lamp position of the signal machine in real time; The interlocking calculation module is used to detect signal light flashing faults based on the filament current and on / off status of each lamp position. When a signal light flashing fault is detected, the module identifies the fault type based on the fault detection results, formulates corresponding operation and maintenance strategies, and generates corresponding fault codes. The flashing light power supply is used to alternately power on and off the signal in a pulse manner.

10. The signal light monitoring system based on fully electronic interlocking as described in claim 9, characterized in that, The interlocking mechanism also includes: The alarm module is used to generate fault alarms based on fault codes and operation and maintenance policies.

Images