Mowing systems include a mower and, optionally, a remote control unit such as a handheld unit, between which may be provided 1- or 2-way communications. Components and features are included in the mower, the remote control unit, or both to enhance the safety, functionality, or user experience of the system's user/operator. One aspect relates to monitoring a tilt angle of the mower, and defining or executing different system responses as a function of different first and second conditions that relate to the tilt angle. Another aspect relates to automatic adjustment of a speed setting of the mower's drive system as a function of a power takeoff (PTO) unit of the mower.

An engine-driven brush cutter (100) equipped with a safety device (42) that includes an acceleration sensor unit (24) attached to a drive unit (4) in an aslant orientation such that a detection axis (DA) of the sensor unit (24) inclines by an angle (θ1) relative to the up-and-down direction (V) of the brush cutter (100). This inclined orientation of the detection axis (DA) contributes to lowering the sensitivity of the sensor unit (24) to engine vibration to which the safety device should not be sensitive so much.

An engine-driven brush cutter (100) equipped with a safety device (42) that includes an acceleration sensor unit (24) attached to a drive unit (4) in an aslant orientation such that a detection axis (DA) of the sensor unit (24) inclines by an angle (θ1) relative to the up-and-down direction (V) of the brush cutter (100). This inclined orientation of the detection axis (DA) contributes to lowering the sensitivity of the sensor unit (24) to engine vibration to which the safety device should not be sensitive so much.

An engine-driven brush cutter (100) equipped with a safety device (42) that includes an acceleration sensor unit (24) attached to a drive unit (4) in an aslant orientation such that a detection axis (DA) of the sensor unit (24) inclines by an angle (θ1) relative to the right-and-left direction (R-L) of the brush cutter (100). This inclined orientation of the detection axis (DA) contributes to lowering the sensitivity of the sensor unit (24) to impulses in the direction parallel to a moving direction of a cutting blade (40) operated by an operator at work.

An engine-driven brush cutter (100) equipped with a safety device (42) that includes an acceleration sensor unit (24) attached to a drive unit (4) in an aslant orientation such that a detection axis (DA) of the sensor unit (24) inclines by an angle (θ1) relative to the right-and-left direction (R-L) of the brush cutter (100). This inclined orientation of the detection axis (DA) contributes to lowering the sensitivity of the sensor unit (24) to impulses in the direction parallel to a moving direction of a cutting blade (40) operated by an operator at work.

In accordance with an example embodiment, an agricultural vehicle may include first and second harvesting devices connected to the agricultural vehicle. The agricultural vehicle may include a sensor which detects whether the agricultural vehicle is traveling in an operational or non-operational direction. The agricultural vehicle may include a lift controller in communication with the sensor and the first and second harvesting devices. The lift controller may automatically reposition the first and second harvesting devices into non-operating positions when the lift controller determines an intention to move the agricultural vehicle in a non-operational direction.

A robotic vehicle may include control circuitry configured to execute stored instructions to direct operation of the robotic vehicle on a defined area, and an electrical resistance sensor in communication with the control circuitry. The electrical resistance sensor may be configured to detect motion indicative of a lift event and a collision event using a single sensor.

Systems for improving fire safety in agricultural machinery are configured for detecting, at least partially controlling, and/or suppressing adverse fire-related conditions. The adverse fire-related conditions can include sparks, embers, and/or flames in the agricultural machinery.

An obstacle detection system for an agricultural work vehicle includes: an obstacle estimation unit 52 that estimates a region in a field based on a detection signal from an obstacle sensor 21 in which region an obstacle is present, and outputs obstacle present region information; an image capturing unit 22 that outputs a captured image of the field; an obstacle detection unit 54 that detects the obstacle from an input image and outputs obstacle detection information; and an image preprocessing unit 53 that generates, as an image to be input to the obstacle detection unit 54, a trimmed image obtained by trimming the captured image so as to include the region in which the obstacle is present, based on the obstacle present region information and shooting-angle-of-view information regarding the image capturing unit 22.

Aspects hereof relate to a control system for a terrain working vehicle having an operator protection apparatus. In some aspects, the control system instructs and ceases an actuation of the operator protection apparatus to and between a raised position and a lowered position.