本发明系具有：位置检测部11：再生状态检测部13，检测是否为使用再生煞车的状态；路线信息保持部14，用以保持使用煞车的可能性较高的区间之信息；空气余量算出部15，算出空气槽之空气余量；以及压缩机控制部12，用以控制压缩机；压缩机控制部12系在当列车在与使用煞车的可能性较高的区间之间的距离为一定值以下的地点行驶中且未使用再生煞车的再生准备状态下，当空气余量成为0%时使压缩机开始压缩空气的生成；在使用再生煞车的再生状态下，当空气余量未达100%时使压缩机生成压缩空气；在通常状态下，当空气余量成为比0%大的第1临限值时使压缩机开始生成压缩空气，当空气余量成为比第1临限值大且比100%小的第2临限值时使压缩机结束生成压缩空气。

This invention provides a train information management device which includes a position detector 11, a regeneration state detector 13 for detecting the state in which a regeneration brake is being applied, a route information retaining unit 14 which retains information about the section having a high possibility of applying the brake, an air remaining amount computing unit 15 for computing the air remaining amount in an air tank, and a compressor controlling unit 12 for controlling a compressor. When the train is travelling through a place which is a distance of below a certain value away from a section having a high possibility of applying the brake, and is in the state of regeneration-ready in which the regeneration brake is not being applied, the compressor controlling unit 12 causes the compressor to start the production of compressed air when the air remaining amount becomes 0%. And, in the state that the regeneration brake is being applied, the compressor is caused to produce the compressed air when the air remaining amount is less than 100%. In the ordinary state, the compressor is caused to start the production of the compressed air when the air remaining amount reaches a first threshold value larger than 0%, and the compressor is caused to end the production of the compressed air when the air remaining amount reaches a second threshold value larger than the first threshold value and smaller than 100%.