3 results about "Effective height" patented technology

A system and a procedure are provided to simplify the safe transport of a work machine. During the transport phase of the work machine, in which it is positioned relative to a transport vehicle, an instantaneous effective height of the work machine, for example, relative to the ground surface, is determined. The instantaneous effective height can be based, for example, on the position of a work tool assembly, which is determined based on the recorded relative positions of the various components. An intervention state for the transport phase can be determined, at least partially, based on the effective height of the work machine, for example, by comparing it with a threshold value that may correspond to a possible minimum effective height for this type of machine.Output signals can be automatically generated to perform a predefined intervention in a current transport plan that corresponds to the specific intervention state.

The application discloses an absolute gravimeter and a measuring method capable of measuring absolute gravity or gravity vertical gradient. The absolute gravimeter comprises a vacuum falling body system, an upper support adjusting system, a laser interference system, a vibration isolation system and a lower support adjusting system. The vacuum falling body system and the vibration isolation system are designed as cavities with interchangeability of the same connection interface, so that the positions of the two systems in the instrument erection process of different measurement modes are interchanged. The falling body prism in the vacuum falling body system and the reference prism in the vibration isolation system are both designed as a combination of bidirectional pyramidal prisms. In a high position measurement mode, the vacuum falling body system is above and the vibration isolation system is below, and the absolute gravity value at the high position is measured; in a low position measurement mode, the vibration isolation system is above and the vacuum falling body system is below, and the absolute gravity value at the low position is measured. The absolute gravity values at the high position and the low position are obtained through the two measurement modes respectively, and the effective height corresponding to the falling body is recorded, so that the measurement of the gravity vertical gradient is realized.

The application provides a multi-mode railway wireless signal coverage simulation calculation acceleration method and system, relates to the field of railway wireless communication technology, and comprises the following steps: acquiring simulation basic data including terrain, position and device parameters; secondly, calculating the distance between a mobile station and a base station and the effective height of an antenna; then, quickly obtaining a signal propagation loss value by inquiring a preset propagation loss value table; then, dynamically determining a sector simulation calculation region according to a preset minimum receiving level threshold value and the loss value; finally, only executing coverage simulation calculation in the sector region to generate an accelerated wireless signal coverage simulation result. The application replaces complex real-time calculation by table lookup and combines dynamic region control, thereby significantly reducing redundant calculation, greatly improving simulation efficiency while ensuring accuracy.