1 / 8

GENERATING HHP-8 SYSTEM ALARMS USING MEAP

GENERATING HHP-8 SYSTEM ALARMS USING MEAP. MULTI-FUNCTION DISPLAYS.

sanjiv
Télécharger la présentation

GENERATING HHP-8 SYSTEM ALARMS USING MEAP

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GENERATING HHP-8 SYSTEM ALARMS USING MEAP

  2. MULTI-FUNCTION DISPLAYS • Display of equipment status, events, faults, and alarms for use by the engineer is made possible through the use of Multi-Functions Displays (MFDs) which obtain information from the onboard computers (CMU, BCC, MPU, WSCC, etc.) via the LON network. • As it is not practical to display every parameter, variable, event, or alarm; indications were most likely limited during design to those that were believed to be most pertinent and useful to the engineer. • Experience has shown that situations arise during operation which are not easily (if at all) recognizable with the existing MFD indications, leading to increased delay minutes and terminations. Examples of this include, but are not limited to, delays caused by low battery voltage, low main reservoir pressure, MCB maintaining circuit failures, FIP loss, and HT Configuration KO.

  3. LIMITATIONS OF SERIAL CMU DATA • The current HHP-8 locomotive MEAP system currently relies on a serial connection between the MEAP box and the onboard Car Monitoring Unit (CMU). • The serial connection allows for the collection of events that were gathered from the onboard computers (MPU, BCC, WSCC, etc.) and stored by the CMU. • Since the data connection for MEAP is separate from the LON network, information can (and does) exist on the LON that is not monitored by the MEAP system. This means that not all of the information displayed for the engineer can be detected by MEAP and conversely, not all of the events monitored by MEAP are displayed to the engineer.

  4. USING MEAP TO PROVIDE MFD ALARMS • By connecting the MEAP box to the LON network, it becomes possible to do the following: • Monitor messages between the various onboard computers for information that is not currently provided by, nor included in, existing CMU events. • Send messages to the MFD to indicate the presence of abnormal situations and, where necessary, steps to address the issue. • Adding windows services to the MEAP box allows for the creation of modifiable logic that can be applied to the information that is received from the LON. • As situations are identified in which insufficient information is available for the engineer to assess and recover, they can be defined within the program running on the MEAP box to provide the necessary additional information to the engineer via the MFD.

  5. MEAP GENERATED ALARMS LOW BATTERY VOLTAGE • Battery voltage is only displayed on the fireman-side cab screen, which is not monitored by the engineer during operation. • Using MEAP, the engineer can now receive an indication in the alarm window showing that the battery voltage is operating below definable set-points. • Text color can be used to display severity and additional information can be included such as “Notify CNOC” and “Stop at Station”.

  6. MEAP GENERATED ALARMS (CONT.) BATTERY NOT CHARGING • A “Batter Charger Fault” is generated in the propulsion system computer (MPU) but does not get recorded by or stored in the CMU. • The engineer has no current indication that the battery chargers are operating. • Using battery voltage and current values from the LON, MEAP can now provide a message to the engineer via the alarm window that indicates when the chargers are offline.

  7. MEAP GENERATED ALARMS (CONT.) LOW MAIN RESERVOIR • No indication of main reservoir pressure is currently displayed for the engineer. • Using LON variables, the MEAP can send a warning to the engineer that informs when pressure has dropped below a definable set-point. • The picture below shows a message sent when pressure dropped below 115 psig.

  8. MEAP GENERATED ALARMS (CONT.) FIP LOSS • No indication of FIP loss is currently displayed for the engineer. • Using LON variables, MEAP can send monitor the status of the FIP network and provide a warning to the engineer via the MFD when a FIP LOSS has occurred. MCB MAINTAINING CIRCUIT FAILURE • Failures of the MCB maintaining circuit are not identifiable on the MFD, but will prevent the MCB from closing. • Using LON variables, MEAP can monitor the status of the MCB maintaining circuit fault and provide a warning to the engineer via the MFD.

More Related