Jema, Future Solutions ›

Future Solutions

Jema, an Irizar Group company, operates in power electronics with applications in network and transport quality, in sectors as diverse as buses and coaches, renewables and BESS, nuclear fusion and particle accelerators. Jema also offers solutions in power supplies for Big Science, renewable energy, storage and smart grids.

In the bus and coach sector, Jema is noteworthy for the application of multiplexed electronic architecture that provides every system with intelligence to provide new functionality and facilitate vehicle diagnostics. Also of note are the AEB-LDW driving assistance systems, the HMI control and console and battery module monitoring for charging management.

The firm’s strategy is currently geared towards the development of solutions to improve efficiency and diagnosis of on-board electronics in Irizar vehicles in order to reduce the consumption of electricity, thereby reducing CO2 emissions.

Efficient electronic solutions

Jema has developed solutions for lower consumption of the interior lighting of buses manufactured by Irizar. Jema has also worked on improving the manufacture of electronic control unit operating in aggressive environments (heat, moisture condensation, etc.), both in the processes and in the materials used to protect the electronics, all with the aim of increasing their efficiency and sustainability.

In-vehicle electronic diagnostics

Another development line is improvements in the diagnosis of ECUS or control boxes for urban buses through the UDS (Unified Diagnostic System). Improvements that have been implemented in solutions that Irizar e-mobility, Masats and Hispacold currently offer their customers. The UDS is a communication protocol used in automation based on several ISO regulations. It aims to facilitate off-board diagnosis, using a series of “UDS services” between the client (PC) and the servers (ECUs). These “UDS services” can be used, for example, to read the fault memory or to reprogram the ECU. An additional advantage of the UDS is that the diagnostic functions are implemented on the client rather than on the ECUs, thus enabling the complexity of the latter to be reduced.

Jema is also working on new generations of electronics consisting of several ECUs in a master-slave configuration that will have a human and electronic interface HMI. It is a novel project in that Jema has developed both electronics systems as a single solution applicable to a range of vehicle types, thus guaranteeing the versatility of their electronic solutions.

To this end, the words of Javier Romero, head of the electronics division at Jema Energy, are very revealing: “Jema is committed to continuous updates and improvements in its electronics products, so that it can offer its customers the best solutions on the market”

New projects: AMYA and BMS 2.0

The AMYA project consists of new generations of on-board door and ramp drive control boxes manufactured by Masats. Complying with customer integrity and security requirements in electronics specifications is an exciting challenge for Jema. The first prototypes are currently being completed and the first units of the series will be delivered by the end of 2021.

In terms of electromobility, Jema is still involved in the development of electronic control and monitoring solutions for new generations of BMS batteries, together with CIDETEC. The BMS is the competitive advantage of batteries in heavyduty electric vehicles. In other words, the BMS electronics are what determines the responses enables the battery’s service useful battery to be optimised and extended, thus making it more efficient.

In 2021, Jema launched the first units of the second generation of BMS on the market.