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Vigilance control device

Listing ID #4125494

  • Supply Type Manufacturer, Exporter, Supplier
Preferred Buyer From : All over the world

Vigilance Control Device (VCD) is a microcontroller based safety device which will automatically apply penalty brakes in case the driver is incapacitated. Similar operation is available in older....
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Company Information

  • Member Since 18 Years
  • Nature of Business Retailer
  • Year of Establishment 1989

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Vigilance Control Device (VCD) is a microcontroller based safety device which will automatically apply penalty brakes in case the driver is incapacitated. Similar operation is available in older locomotives in the form of Deadman’s Lever.
Operating Principle
Installed on locomotive, VCD gives cyclic warning to the driver. Based on drivers reaction to this warning (in terms of any of the pre-defined sets of actions to be done by the driver), the system automatically resets the alerting cycle. In case, the driver fails to acknowledge the initial alert signals, a set of additional alert indications are given. Even failing to respond to these additional alert signals also will result in automatic application of penalty brakes.
Some of the pre-defined set of actions to reset Alerter cycle can include:

  • Change of notch position/ Master Handle Reverser
  • Increase / decrease of level of dynamic braking
  • Normal application of formation brakes
  • Operation of locomotive horn
  • Operation of sanding valves
  • Pressing of VCD reset button
  • Other customized actions based upon locomotive type

These pre-defined set of actions are regularly monitored by VCD system and VCD cycle is reset whenever any of the above actions takes place.
In case the driver fails to acknowledge the Alerter warning signal during initial time period (say 60 sec), an additional indication in form of blinking LED will be given for a pre-defined time. After the predefined time if acknowledgement is not yet received, an additional audio alarm is given. If the driver further fails to acknowledge the alarm, automatic application of brakes will take place and Engine is brought to IDLE speed.



Company Details close-icon

Medha Servo Drives Pvt. Ltd., founded in 1984, is focused on rail transportation. Since inception, Medha has used Research and Development as a tool for success and today we are proud to be known for our product range, domain knowledge, design expertise, quality and manufacturing capabilities. Starting from humble beginning, over the last 30 years our company has grown to employ over 2000 talented people whose commitment has led to a sales revenue of INR 10.5 billion (approximately USD 162 million) for the year 2016-17, with the revenues growing at the rate of 27% year over year (CAGR) for the past ten years. Medha’s vision is to become world leader in railway products and to achieve this we specialise in three areas, Control Electronics, Power Electronics and safety critical Signalling.
We have designed and manufactured various world-class high-tech electronics products for application on locomotives, coaches, railway stations and yards. We specialise in designing and engineering our products to withstand shock and vibration, wide temperature variations, and electrical disturbances that are typical of harsh locomotive environment. Our strength lies in designing, customising and integrating systems that involve multiple functional domains such as control electronics, power electronics, fail safety and mechanical construction. Medha’s R&D Centre is 500 people strong and has all the infrastructure required for developing sophisticated products. Medha has also achieved CMMI Level 3 certification for well defined design processes for new product development. We are working towards CMMI Level 5 certification by further improving our design processes.
At Medha, our products, our people and our approach to business are held to only the highest standards. We build quality into our products by following well designed processes and implementing end-to-end manufacturing. We profoundly believe in professional management at all levels and strictly follow Quality Assurance System as per IRIS and ISO 9001:2008 standard. Medha was awarded IRIS and ISO 9001:2008 certificate by DNV GL Assessors accredited by NABCB and established a reputation for quality products and excellent after sales service. Our quality policy has been, ‘We are committed to provide reliable products and services meeting customer expectations and applicable statutory and regulatory requirements with excellence in performance and cost effectiveness through a continually improving Business Management System'.
Medha’s motto being ‘translating technology into innovative solutions’, our employees believe in making our customers’ lives better by designing better products and improving existing products. To us, the idea of innovation extends beyond building a product. We continue to train our customers and service the product throughout the design life of a product (typically 10 – 20 years).
Medha’s R&D Centre, R&D Centre Unit II, and Manufacturing Unit, located in three different areas, are built over a combined area of about 18 acres of land in the heart of industrial areas near Hyderabad, India. These state-of-the-art facilities encompass the capability to research, design, develop, manufacture, service and provide in-field product support.
In 2007, Medha started a charitable institution by the name of ‘Medha Charitable Trust’ for the upliftment of poor students. It is the goal of the trust to improve the lives of these students by supporting them throughout their education and helping them become self sufficient in the long run. The trust has touched the lives of more than 20,00,000 students in various schools so far since its establishment.
  • Nature of Business Manufacturer / Exporter / Supplier / Retailer
  • Number of Employees 400 - 450
  • Year of Establishment 1989
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Seller Contact Details
  • Seller Medha Servo Drives Privite Limited
  • Address Nacharam, Hyderabad, Telangana
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