Robot system

1. A robot system, comprising:

a robot body configured to perform a work;

a start-of-work detector configured to detect a start of the work when an end effector of the robot body is located above the start-of-work detector;

an end-of-work detector configured to detect an end of the work when the end effector of the robot body is located above the end-of-work detector;

a processor programmed to:

control operation of the robot body according to a command of an operator;

acquire, based on information from the start-of-work and end-of work detectors, at least one of an amount of work performed by the robot body and a speed of work performed by the robot body; and

acquire motivation information for motivating the operator so that the operator increases an amount of work or a speed of work of the robot body, the motivation information being based on at least one of the amount of work performed by the robot body and the speed of work performed by the robot body;

a manipulator configured to send the operator command to the processor according to manipulation by the operator; and

a motivation information presenter configured to present to the operator the acquired motivation information.

2. The robot system of claim 1 , wherein the work performed by the robot body is a given work performed repeatedly.

3. The robot system of claim 1 , wherein the motivation information includes at least one of:

the amount of work performed by the robot body;

the speed of work performed by the robot body;

a yield that is a total manufacturing retail price or a total manufacturing amount of articles produced by the work performed by the robot body;

a wage to be paid for the total manufacturing amount of articles produced by the work performed by the robot body;

a position given to the operator who has achieved a given high level in the amount of work or the speed of work performed by the robot body;

a title for praising a large amount of work or a high speed of work performed by the robot body;

a sound effect that changes according to the amount of work or the speed of work performed by the robot body and reminds the operator about money;

an image that changes according to the amount of work or the speed of work performed by the robot body and reminds the operator about money; and

a ranking of the amount of work and the speed of work performed by the robot body of an arbitrary one of a plurality of the robot systems.

4. The robot system of claim 1 , wherein a robot including the robot body and the processor has:

a manual mode in which the processor is programmed to control the operation of the robot body according to the operator command;

an automatic mode in which the processor is programmed to control the operation of the robot body according to a given operation program; and

a correctable automatic mode in which the processor is programmed to control the operation of the robot body according to the operator command and the given operation program, and

wherein the processor is programmed to correct the given operation program so as to reflect the operator command in the correctable automatic mode and to use the corrected given operation program thereafter in the correctable automatic mode, instead of the given operation program.

5. The robot system of claim 1 , wherein the processor is further programmed to:

output an automatic operating command according to a basic operation program;

output an automatic operation correcting command based on a machine learning; and

add the automatic operating command, the automatic operation correcting command, and the operator command and output an operating command, and

wherein the processor carries out the machine learning by associating (i) a command obtained by adding the automatic operating command to the operator command with (ii) position data of the end effector of the robot body and data of a force applied to the end effector.

6. The robot system of claim 1 , further comprising:

a work imager configured to image the work performed by the robot body; and

a work image display configured to display a work image that is an image of the work performed by the robot body imaged by the work imager.

7. The robot system of claim 6 , further comprising a communication network through which a transmission of the operator command from the manipulator to the processor, a transmission of the work image from the work imager to the work image display, and a transmission of the motivation information from the processor to the motivation information presenter are performed.

8. The robot system of claim 1 , wherein each of the start- of-work detector and the end-of-work detector is a proximity sensor or a contact sensor that detects the end effector of the robot body.