PantoInspect
PantoInspect is a Danish supplier of automated wayside pantograph monitoring systems — trackside installations that inspect the current collectors of passing trains, used by European infrastructure managers to catch pantograph damage before it brings down the overhead line.
The company traces its automated pantograph inspection technology to a development partnership with Banedanmark, the Danish rail infrastructure manager, starting around 2008. Its work sits within pantograph and catenary monitoring, where equipment mounted beside the track assesses the condition of pantographs during normal running rather than in the depot.
The operating company is registered in Copenhagen as Image House PantoInspect A/S, with Image House Holding A/S as its parent and 12 employees on record. The wider group trades under the name Image House Technology Group.
Core product: PantoSystem
PantoSystem is a wayside pantograph inspection platform combining 3D laser triangulation with camera and LiDAR (light detection and ranging) sensing, and machine learning-based damage detection. It is a sensors and measurement application in which the full measurement has to be completed in the fraction of a second a train takes to pass the gantry.
PantoInspect specifies the PantoScanner unit for train speeds of 350 km/h and a measurement resolution of 1 mm.
Detection covers damage to carbon strips and other mechanical defects on the pantograph head, with the aim of preventing teardown of overhead contact line equipment.
The accompanying software suite provides a web-based client, automated alarm handling, and API (application programming interface) access for integration with operators’ asset management systems.
Market position
PantoInspect’s own reference material lists Deutsche Bahn, RATP (Régie Autonome des Transports Parisiens), Infrabel, Sydney Trains, Network Rail, Banedanmark and Taiwan Railway Corporation — the Taiwan Railways Administration until its conversion into a state-owned company on 1 January 2024 — among the infrastructure managers and operators using its equipment, and carries customer statements from Infrabel and Sydney Trains describing damaged pantographs identified and taken out of service before they could break the overhead wire or disrupt services.
In 2022 the company entered a strategic alliance with engineering consultancy Ricardo covering North and Latin America, where the pantograph monitoring system is marketed under Ricardo’s PanMon name.
Current activity
In Poland, PKP Polskie Linie Kolejowe (PLK), the national infrastructure manager, operates the technology under the name DSAP — Detekcja Stanów Awaryjnych Pantografów, or pantograph fault-state detection. The first installation entered service in December 2022 and covers the Warszawa–Katowice line and the Warszawa–Grodzisk Mazowiecki suburban line; the civil works were carried out by Zakład Robót Komunikacyjnych – DOM w Poznaniu.
PLK reported that the system checked more than 110,000 trains and close to 146,000 pantographs during 2023, identified irregular pantograph condition on 6.3 per cent of scanned trains, and issued 318 urgent notifications to operators. Its busiest single day, 28 November 2023, covered 395 trains and 533 pantographs.
A second DSAP site, near Różyny in Pomerania on the Warszawa Wschodnia–Gdańsk Główny and Zajączkowo Tczewskie–Pruszcz Gdański lines, was contracted in 2024 with a maintenance commitment running to the end of 2027. PLK has said it intends to extend the system to further major junctions on the network.
