CN102810239A - Accident prevention system and method - Google Patents

Abstract

The invention provides an accident prevention system, which is used on a machine station. The accident prevention system comprises a hand detection module and a control module. The hand detection module is used for detecting images which are obtained when a camera shoots possible reaching operation range of a cutter of the machine station, so as to judge whether the images obtained through shooting comprise a hand or not. The control module is used for sending control signals to a switching device connected between the machine station and an external power supply when the images obtained through shooting comprise the hand, so as to cut the connection between the machine station and the external power supply. The accident prevention system can prevent the machine station from injuring the hand of an operator. The invention also provides an accident prevention method.

Description

Accident prevention system and method

technical field

The invention relates to an accident prevention system and method.

Background technique

When the operator is operating a machine such as a punching machine, if he accidentally extends his hand into the possible working range of the tool in the machine, it is very likely that the operator's hand will be accidentally cut or pinched by the tool Wait for an accident.

Contents of the invention

In view of the above, it is necessary to provide an accident prevention system and method capable of avoiding accidental injury to the operator's hands.

An accident prevention system used in a machine, the accident prevention system includes:

A hand detection module is used to detect the image obtained by shooting the possible working range of the tool of the machine by a camera, so as to determine whether the captured image contains a hand; and

A control module, used to send a control signal to a switch device connected between the machine table and an external power supply when the captured image contains hands, so as to cut off the connection between the machine table and the external power supply .

A method of accident prevention, including:

Detecting step: Detecting the image obtained by shooting the possible operating range of the tool of the machine by a camera, so as to determine whether the captured image contains a hand; and

Controlling step: sending a control signal to a switch device connected between the machine table and an external power supply when the captured image contains hands, so as to cut off the connection between the machine table and the external power supply.

The above-mentioned accident prevention system and method use the camera to shoot the possible working range of the tool, and use the hand detection module to detect whether the captured image contains a hand. When the captured image contains a hand Then, the control module timely controls the switch device to cut off the connection between the machine table and the external power supply, so as to avoid the machine table from causing harm to the operator.

Description of drawings

Fig. 1 is a block diagram of a preferred embodiment of the accident prevention system of the present invention.

Fig. 2 is a flowchart of a preferred embodiment of the accident prevention method of the present invention.

Description of main component symbols

Machine 1 External power supply 2 accident prevention system 3 Hand Image Storage Module 10 hand detection module 12 control module 15 Camera 16 switchgear 18 alarm device 19

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:

Please refer to FIG. 1 , the accident prevention system 3 of the present invention is applied to a machine 1 to prevent the hand of the operator from being injured by the machine 1 when the operator misuses it. A preferred embodiment of the accident prevention system 3 includes a hand image storage module 10 , a hand detection module 12 and a control module 15 .

The hand image storage module 10 stores a large number of hand images of various postures without background patterns, such as images of the front of the palm, the side of the palm, and making a fist.

The machine 1 is equipped with a camera 16 for photographing the possible working range of the tool of the machine 1 and transmitting the photographed images to the hand detection module 12 . The hand detection module 12 is used for comparing the obtained image with a large number of hand images stored in the hand image storage module 10 to determine whether the captured image contains a hand. Of course, the hand detection module 12 can also use other known detection techniques to detect the captured image to determine whether the image contains a hand.

If the hand detection module 12 detects that the captured image contains a hand, it means that the operator's hand is placed within the reachable operating range of the cutting tool. Work may cause injury to the operator's hands. At this time, the control module 15 sends a control signal to the switch device 18 of the machine 1 . The switch device 18 of the machine 1 is connected between the machine 1 and the external power source 2 for cutting off and restoring the connection between the machine 1 and the external power source 2 . When the switch device 18 receives the control signal from the control module 15, the switch device 18 immediately cuts off the connection between the machine 1 and the external power source 2 to avoid harm to the operator.

At the same time, an alarm device 19 (such as an indicator light) can also be provided on the machine platform 1. When the captured image contains hands, the control module 15 also sends the control signal to the alarm device 19 at the same time, so that the alarm When the device 19 starts to work, the operator can be reminded that the action at this moment belongs to a dangerous action.

Please refer to Fig. 2, the preferred embodiment of accident prevention method of the present invention comprises the following steps:

Step S1 : The camera 16 takes pictures of the possible working range of the tool of the machine 1 , and transmits the captured images to the hand detection module 12 .

Step S2: The hand detection module 12 compares the image captured by the camera 16 with a large number of hand images stored in the hand image storage module 10 to determine whether the captured image contains a hand. If the captured image contains hands, step S3 is executed. If the captured image does not contain hands, return to step S1.

Step S3: the control module 15 sends a control signal to the switch device 18 of the machine 1 . The switch device 18 immediately cuts off the connection between the machine platform 1 and the external power source 2, so as to avoid injury to the operator.

Step S4: The control module 15 sends the control signal to the alarm device 19, so that the alarm device 19 starts to work, that is, to remind the operator that the action at this time is a dangerous action.

The above-mentioned accident prevention system and method use the camera 16 to take pictures of the possible working range of the tool, and use the hand detection module 12 to detect whether the captured image contains hands. At the end, the control module 15 controls the switch device 18 to cut off the connection between the machine 1 and the external power supply 2 in time, so as to avoid the machine 1 from causing harm to the operator. At the same time, the control module 15 also controls the alarm device 19 to start working, so as to remind the operator that the action at this time is a dangerous action.

Claims (6)

1. An accident prevention system used in a machine, the accident prevention system includes: A hand detection module is used to detect the image obtained by shooting the possible working range of the tool of the machine by a camera, so as to determine whether the captured image contains a hand; and A control module, used to send a control signal to a switch device connected between the machine table and an external power supply when the captured image contains hands, so as to cut off the connection between the machine table and the external power supply . 2. Accident prevention system as claimed in claim 1, is characterized in that: described accident prevention system also comprises a hand image storage module, is stored with some hand images of various postures in this hand image storage module, and this hand image storage module The part detection module is used for comparing the captured image with several hand images stored in the hand image storage module to determine whether the captured image contains a hand. 3. The accident prevention system according to claim 1, wherein the control module is further configured to send a control signal to an alarm device to make the alarm device alarm when the captured image contains a hand. 4. A method of preventing accidents, comprising: Detecting step: Detecting the image obtained by shooting the possible operating range of the tool of the machine by a camera, so as to determine whether the captured image contains a hand; and Controlling step: sending a control signal to a switch device connected between the machine table and an external power supply when the captured image contains hands, so as to cut off the connection between the machine table and the external power supply. 5. The accident prevention method according to claim 4, characterized in that: the "detection step" comprises: By comparing the captured image with a large number of hand images in various poses, it is judged whether the captured image contains a hand. 6. The accident prevention method according to claim 4, characterized in that: the accident prevention method further comprises: A control signal is sent to an alarm device to make the alarm device start working.

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