Abstract: An obstacle determination device mounted on a mining work machine determines whether the state of the mining work machine is a state immediately after progressing or a normal travel state; selects, as a distance threshold provided to determine a non-obstacle, a starting distance threshold if in the state immediately after starting, or a normal distance threshold if in the normal travel state; extracts obstacle candidates on the basis of the result of comparison of the distance at which an obstacle candidate was initially detected with the distance threshold; selects a starting reflection intensity threshold if the state immediately after starting, or a normal reflection intensity threshold if in the normal travel state; excludes non-obstacles on the basis of the result of comparison of the reception strength of the reflection wave of the remaining obstacle candidates with the reflection intensity threshold; and outputs the remaining obstacle candidates as obstacles.

Abstract: An electrically-driven mining vehicle includes an obstacle detector, a speed detector, and an alarm. The alarm outputs a first warning, which urges an operator of the electrically-driven mining vehicle to operate a regenerative brake pedal that actuates only the regenerative brake device, and a second warning, which urges the operator to operate a cooperative brake pedal that uses the regenerative brake device and the mechanical brake device in combination. If the travel speed of the vehicle is included in a low speed range in which no difference can be considered to exist in distance between a first braking distance upon actuation of only the regenerative brake device and a second braking distance upon operation of a cooperative braking, a signal for performing the first warning is outputted earlier by at least a warning time interval.

Abstract: An off-road dump truck includes a vehicle body, a peripheral recognition device, and an obstacle discrimination device. The peripheral recognition device detects obstacle candidates in front of the vehicle body. The obstacle discrimination device classifies the obstacle candidates, which were detected by the peripheral recognition device, into obstacles and non-obstacles and outputs, as obstacles, the obstacle candidates classified as obstacles. The obstacle discrimination device includes a travel state determination section, a distance filter section, and a reflection intensity filter section. The travel state determination section determines whether each obstacle candidate is a moving object or a stationary object. The distance filter section compares a distance, where the stationary object was first detected, with a distance threshold.

Abstract: An off-road dump truck includes a vehicle body, a peripheral recognition device, and an obstacle discrimination device. The peripheral recognition device detects obstacle candidates in front of the vehicle body. The obstacle discrimination device classifies the obstacle candidates, which were detected by the peripheral recognition device, into obstacles and non-obstacles and outputs, as obstacles, the obstacle candidates classified as obstacles. The obstacle discrimination device includes a travel state determination section, a distance filter section, and a reflection intensity filter section. The travel state determination section determines whether each obstacle candidate is a moving object or a stationary object. The distance filter section compares a distance, where the stationary object was first detected, with a distance threshold.

Abstract: An obstacle determination device mounted on an own vehicle determines whether the state of the own vehicle is a state immediately after progressing or a normal travel state ;selects, as a distance threshold provided to determine a non-obstacle, a starting distance threshold if in the state immediately after starting, or a normal distance threshold if in the normal travel state; extracts obstacle candidates on the basis of the result of comparison of the distance at which an obstacle candidate was initially detected with the distance threshold; selects a starting reflection intensity threshold if the state immediately after starting ,or a normal reflection intensity threshold if in the normal travel state; excludes non-obstacles on the basis of the result of comparison of the reception strength of the reflection wave of the remaining obstacle candidates with the reflection intensity threshold; and outputs the remaining obstacle candidates as obstacles.

Abstract: An electrically-driven mining vehicle includes an obstacle detector, a speed detector, and an alarm. The alarm outputs a first warning, which urges an operator of the electrically-driven mining vehicle to operate a regenerative brake pedal that actuates only the regenerative brake device, and a second warning, which urges the operator to operate a cooperative brake pedal that uses the regenerative brake device and the mechanical brake device in combination. If the travel speed of the vehicle is included in a low speed range in which no difference can be considered to exist in distance between a first braking distance upon actuation of only the regenerative brake device and a second braking distance upon operation of a cooperative braking, a signal for performing the first warning is outputted earlier by at least a warning time interval.

Abstract: A braking distance control device employed for an electrically driven work vehicle includes a safety vehicle speed calculation unit that calculates a safety vehicle speed at which a braking distance provided by use of an electric brake device becomes less than or equal to a threshold value, based on gradient information, payload information, road surface friction information, vehicle speed information, and a braking torque characteristic of electric motors: a critical vehicle speed for deceleration calculation unit that calculates a critical vehicle speed for deceleration at which deceleration provided by use of the electric brake device becomes less than or equal to a threshold value; and an operation judgment unit 14 that judges a setting of notification, based on pedal operation amounts.

Abstract: A braking distance control device employed for an electrically driven work vehicle includes a safety vehicle speed calculation unit 9 that calculates a safety vehicle speed at which a braking distance provided by use of an electric brake device becomes less than or equal to a threshold value, based on gradient information, payload information, road surface friction information, vehicle speed information, and a braking torque characteristic of electric motors.