Acoustic emergency stop control device
By using a voice-activated emergency stop control device, which utilizes a PLC controller and noise sensors to detect abnormal situations, the equipment can be stopped quickly and accurately. This solves the problem of equipment not being able to stop in time in existing technologies, and improves safety and the reliability of equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TRIANGLE TIRE
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-21
AI Technical Summary
Existing equipment cannot be stopped in time under abnormal conditions, leading to mechanical injury accidents. Furthermore, existing safety devices cannot quickly trigger emergency stops when there is a sudden malfunction or when personnel are busy with both hands.
Design a voice-activated emergency stop control device, which is connected to a sound signal acquisition circuit, an emergency stop control circuit and a reset circuit through a PLC controller. It uses a noise sensor to detect abnormal conditions and control the equipment to stop, and has a higher priority emergency stop function.
It enables rapid and precise shutdown of equipment under abnormal conditions, reducing the risk of mechanical injury and improving safety and equipment reliability.
Smart Images
Figure CN224536366U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automatic control technology, and in particular to a sound-controlled emergency stop control device that uses sound (decibels) to precisely control the stopping or starting of equipment to ensure safe production. Background Technology
[0002] In the production process, people play a dominant role. As people become more safety-conscious, companies are constantly improving equipment protection and safety devices to reduce various safety risks in the production process. However, mechanical injury accidents can still occur whenever people are involved.
[0003] Although the current equipment boasts a high level of automation, with emergency stop switches, photoelectric switches, and limit switches capable of automatically stopping the equipment in case of malfunctions, safety accidents can still occur during production. The problems with these safety devices are: 1) When the equipment is large or part of a production line, personnel cannot trigger the safety devices immediately in case of malfunctions. Time is of the essence, and the inability to stop the equipment in time can lead to further harm to the operator's personal safety; 2) Sudden malfunctions or failures of the on-site equipment safety devices prevent automatic shutdown; 3) When personnel are operating with both hands, they cannot immediately free their arms to trigger the safety devices. Summary of the Invention
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a voice-controlled emergency stop control device that aims to reduce the occurrence of safety accidents. In case of emergencies, this invention can realize the rapid stopping and precise control of equipment, and minimize the risk of mechanical injury during the production process.
[0005] This utility model achieves its purpose through the following measures: A voice-activated emergency stop control device is characterized by comprising a sound signal acquisition circuit, a controller, an emergency stop control circuit, and a reset circuit. The controller is a PLC controller, connected to the sound signal acquisition circuit, the emergency stop control circuit, and the reset circuit. The sound signal acquisition circuit includes a receiver BM and an internal relay K1. The control terminal of the internal relay K1 is connected to the output terminal of the receiver, and the output terminal of the internal relay K1 is connected to the PLC controller. The emergency stop control circuit includes a safety relay K2, which is connected to the power supply circuit of the electrical equipment, and its control terminal is connected to the PLC controller. The reset circuit includes a reset button S1 connected to the safety relay K2. When the reset button S1 is pressed, the normally open contact of the safety relay K2 closes. Upon receiving the closing signal from the safety relay K2, the PLC controller controls the power supply circuit of the electrical equipment to be turned on.
[0006] The power supply circuit of the electrical equipment described in this utility model is equipped with a relay KM1 connected to the PLC controller, which is used to cut off / close the power supply of the electrical equipment.
[0007] This utility model also includes an original equipment reset button S2 connected to the electrical equipment. The original equipment reset button S2 is connected in series with the safety relay K2. Thus, during the reset operation, the PLC controller performs the reset operation only when both the original equipment reset button S2 and the safety relay K2 are turned on, thereby improving the safety of equipment operation.
[0008] This utility model also includes a start button S4 that connects the PLC controller and the electrical equipment to complete the initial start of the equipment, and a speaker P1 connected to the PLC controller. When the alarm state is triggered, the speaker P1 will emit an audible alarm until the system is reset.
[0009] This utility model also includes a stop button S3, which is connected between the internal relay K1 and the reset button S1, and is used to cut off or open the voice-activated emergency stop control device.
[0010] The receiver described in this utility model is a noise sensor, which can be the XM8165 model. The sensor has a measurement range of 30-130dB and can be used with the XD6765 noise monitoring alarm. The decibel threshold can be set.
[0011] In this invention, the upper end of the normally open contact of the receiver BM is connected to the power supply L1, and the lower end of the normally open contact of the receiver BM is connected to the upper end of the coil of the internal relay K1. The lower end of the coil of the internal relay K1 is connected to the power supply N1. The upper end of the normally closed contact of the internal relay K1 is connected to the power supply L1, and the lower end of the normally closed contact of the internal relay K1 is connected to the upper end of the normally closed contact of S3. The lower end of the normally closed contact of S3 is connected to the upper end of the normally open contact of S1 and the upper end of the normally open contact of the safety relay K2. The lower end of the normally open contact of S1 and the lower end of the normally open contact of the safety relay K2 are connected to the upper end of the coil of K2. The lower end of the coil of the safety relay K2 is connected to the power supply N1. The upper end of the normally closed contact of the safety relay K2 is connected to the power supply L1, and the lower end is connected to the upper end of the coil of the speaker P1. The lower end of the coil of the speaker P1 is connected to the power supply N1. The upper end of the normally open contact of the safety relay K2 is connected to the lower end of S2, and the lower end is connected to the input terminal X1 of the PLC.
[0012] When this utility model is in operation, if the ambient sound level is lower than the decibel level of the sound-activated emergency stop receiver BM, the coil of the internal relay K1 of the sound-activated emergency stop will not activate, and the normally open contact of the sound-activated emergency stop will remain open. After confirming the safety of personnel and equipment and the absence of potential hazards, the operator presses the reset button S1. The coil of safety relay K2 activates, closing its normally open contact and maintaining a self-locking state. The PLC receives the signal from safety relay K2, indicating that the conditions for power-on are met. The PLC prepares for power-on, and the normally open contact of safety relay K2 remains closed. The operator presses the start button S4, energizing coil KM1 via PLC logic output, and the equipment starts. When the ambient sound level exceeds the decibel level of the sound-activated emergency stop receiver, internal sound-activated emergency stop relay K1 activates, opening its normally closed contact. Safety relay K2 is de-energized, opening its normally open contact. The PLC receives the signal indicating the sound-activated emergency stop device has activated, de-energizing coil KM1 via PLC logic output, stopping the equipment. Speaker P1 is energized via the normally closed contact of safety relay K2, emitting an audible alarm. After the equipment stops, the operator may not... If personnel press the S4 start button, safety relay K2 will be in an unreset state, preventing the equipment from starting normally. This avoids misoperation due to personnel being nervous after an accident or unclear about the equipment's safety status. When the ambient sound drops below the decibel level of the sound-activated emergency stop receiver, the operator can press the reset button S1 after ensuring the safety of personnel and equipment. This will cause safety relay K2 to activate again, closing its normally open contact and maintaining a self-locking state. The PLC receives the signal from safety relay K2 and prepares to start up again. When the operator presses the start button S4, the equipment and other electrical appliances KM1 will be restarted. Connecting the normally open contact of safety relay K2 in series into the original equipment emergency stop control signal circuit makes the sound-activated emergency stop device function the same as other emergency stop devices, with its signal priority higher than all other control signals. When the noise reaches the set threshold and is triggered, the equipment will immediately stop regardless of its operating mode or process, and the speaker will sound an alarm.
[0013] Compared with existing technologies, this utility model adds a higher-priority voice-activated emergency stop control device to the existing safety devices of the equipment. This device provides emergency shutdown in case of abnormalities without conflicting with the original safety devices. This mechanism can be switched on and off according to the site conditions, and the sensitivity of the voice-activated emergency stop device can be adjusted according to the volume of the sound. In case of an abnormality, a person only needs to instinctively shout loudly; once the sound reaches the set decibel value, the equipment will automatically stop. It has the following advantages: First, this device does not conflict with the original safety devices; second, it is convenient to use and can be installed near the operator, freeing their hands and eliminating the need to search for or operate the safety devices in emergencies; third, it is more sensitive and faster than the original system's safety devices, enabling rapid control of equipment shutdown; fourth, it is controlled by a PLC system and can complement any emergency stop control device in the original system, providing double protection; fifth, this safety device can be switched on and off according to the actual site conditions without affecting the operation of the original system, reducing the demands on human emergency response in sudden situations, improving the accuracy of emergency shutdown, and reducing the impact on personal safety and property caused by delayed shutdown. Attached Figure Description
[0014] Appendix Figure 1 This is a circuit block diagram of this utility model.
[0015] Appendix Figure 2 This is a circuit schematic diagram of an embodiment of the present invention.
[0016] Appendix Figure 3 This is a wiring diagram of the PLC controller in an embodiment of this utility model.
[0017] Figure labels: 1. Sound signal acquisition circuit; 2. Controller; 3. Emergency stop control circuit; 4. Electrical equipment; 5. Alarm circuit; 6. Receiver BM; 7. Sound-controlled emergency stop internal relay K1; 8. Safety relay K2; 9. Original equipment emergency stop button S2; 10. Stop button S3; 11. Start button S4; 12. Equipment and other electrical appliances KM1; 13. Speaker P1. Detailed implementation method: The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] As attached Figure 1 and appendix Figure 2As shown, this example provides a voice-activated emergency stop control device, comprising a sound signal acquisition circuit 1, a controller 2, an emergency stop control circuit 3, a reset circuit 4, and an electrical device 5. The controller 2 is a PLC controller, connected to the sound signal acquisition circuit 1, the emergency stop control circuit 3, and the reset circuit 4. The reset circuit 4 is connected between the electrical device 5 and the emergency stop control circuit 3. The sound signal acquisition circuit 1 includes a receiver and an internal relay K1. The control terminal of the internal relay K1 is connected to the output terminal of the receiver, and the output terminal of the internal relay K1 is connected to the PLC controller. The emergency stop control circuit 3 includes a safety relay K2, which is connected to the power supply of the electrical device. In the circuit, the normally open contact of safety relay K2 is connected to the PLC controller. The upper end of the normally open contact of receiver BM is connected to power supply L1, and the lower end of the normally open contact of receiver BM is connected to the upper end of coil K1. The lower end of coil K1 is connected to power supply N1. The upper end of normally closed contact K1 is connected to power supply L1, and the lower end of normally closed contact K1 is connected to the upper end of normally closed contact S3. The lower end of normally closed contact S3 is connected to the upper ends of normally open contacts S1 and K2. The lower ends of normally open contacts S1 and K2 are connected to the upper end of coil K2. The lower end of coil K2 is connected to power supply N1. The upper end of normally closed contact K2 is connected to power supply L1, and the lower end is connected to the upper end of coil P1. Coil P1 is connected to power supply N1. The upper end of normally open contact K2 is connected to the lower end of S2, and the lower end is connected to input terminal X1 of the PLC.
[0019] This example also includes an alarm circuit 6, which uses a speaker. When the alarm state is triggered, the speaker P1 will emit an audible alarm until the system is reset. Before powering on, close circuit breaker F1. When the ambient sound level is lower than the decibel level of the sound-activated emergency stop receiver BM, the internal sound-activated emergency stop relay K1 will not activate, and its normally closed contact will remain closed. After confirming that personnel and equipment are safe and there are no potential hazards, the operator presses reset button S1. Safety relay K2 activates, its normally open contact closes, and it remains self-locking. The PLC receives the signal from safety relay K2, indicating that the PLC meets the power-on conditions and prepares for power-on. Meanwhile, the normally open safety relay K2 on the equipment side remains closed. The operator then presses start button S4 to start the equipment and other electrical appliances (KM1). When the ambient sound decibel exceeds the decibel of the sound-activated emergency stop receiver, the internal relay K1 of the sound-activated emergency stop is activated, the normally closed contact of the internal relay K1 is opened, the safety relay K2 is de-energized, the normally open contact of the equipment-side safety relay K2 is opened, the PLC receives the activation signal of the sound-activated emergency stop device after the danger occurs, and the PLC takes action to de-energize and stop the equipment. When the equipment stops, if the operator or unauthorized personnel press the S4 start button, the safety relay K2 will be in an unreset state, and the equipment will not be able to start normally. This avoids misoperation caused by personnel being nervous after an accident or other personnel being unclear about the safety status of the equipment. When the ambient sound level drops below the decibel level of the sound-activated emergency stop receiver, the operator can press the reset button S1 after ensuring the safety of personnel and equipment. This will cause the safety relay K2 to activate again, closing its normally open contact and maintaining a self-locking state. The PLC receives the signal from the safety relay K2 and prepares to start up again. When the operator presses the start button S4, the equipment and other electrical appliances KM1 are restarted.
[0020] The voice-activated emergency stop device proposed in this example has the same function as other emergency stop devices. Its signal priority is higher than all other control signals. When the voice-activated emergency stop is triggered, the equipment will stop immediately regardless of its operating mode or process.
[0021] Compared with existing technologies, this utility model adds a higher-priority voice-activated emergency stop control device to the existing safety devices of the equipment. This device provides emergency shutdown in case of abnormalities without conflicting with the original safety devices. This mechanism can be switched on and off according to the site conditions, and the sensitivity of the voice-activated emergency stop device can be adjusted according to the volume of the sound. In case of an abnormality, a person only needs to instinctively shout loudly; once the sound reaches the set decibel value, the equipment will automatically stop. It has the following advantages: First, this device does not conflict with the original safety devices; second, it is convenient to use and can be installed near the operator, freeing their hands and eliminating the need to search for or operate the safety devices in emergencies; third, it is more sensitive and faster than the original system's safety devices, enabling rapid control of equipment shutdown; fourth, it is controlled by a PLC system and can complement any emergency stop control device in the original system, providing double protection; fifth, this safety device can be switched on and off according to the actual site conditions without affecting the operation of the original system, reducing the demands on human emergency response in sudden situations, improving the accuracy of emergency shutdown, and reducing the impact on personal safety and property caused by delayed shutdown.
Claims
1. A voice-activated emergency stop control device, characterized in that, The device includes a sound signal acquisition circuit, a controller, an emergency stop control circuit, and a reset circuit. The controller is a PLC controller, which is connected to the sound signal acquisition circuit, the emergency stop control circuit, and the reset circuit. The sound signal acquisition circuit includes a receiver BM and an internal relay K1. The control terminal of the internal relay K1 is connected to the output terminal of the receiver, and the output terminal of the internal relay K1 is connected to the PLC controller. The emergency stop control circuit includes a safety relay K2, which is connected to the power supply circuit of the electrical equipment. The control terminal of the safety relay K2 is connected to the PLC controller. The reset circuit includes a reset button S1, which is connected to the safety relay K2. When the reset button S1 is pressed, the normally open contact of the safety relay K2 closes. After receiving the closing signal from the safety relay K2, the PLC controller controls the power supply circuit of the electrical equipment to be turned on.
2. The voice-activated emergency stop control device according to claim 1, characterized in that, The power supply circuit of the electrical equipment is equipped with a relay KM1 connected to the PLC controller, which is used to cut off / close the power supply of the electrical equipment.
3. The voice-activated emergency stop control device according to claim 2, characterized in that, It is also equipped with an original equipment reset button S2 connected to the electrical equipment. The original equipment reset button S2 is connected in series with the safety relay K2. Therefore, during the reset operation, the PLC controller will perform the reset operation only when both the original equipment reset button S2 and the safety relay K2 are turned on, so as to improve the safety of equipment operation.
4. The voice-activated emergency stop control device according to claim 3, characterized in that, It also has a start button S4 that connects the PLC controller to the electrical equipment to complete the initial start of the equipment. It also has a speaker P1 connected to the PLC controller. When the alarm state is triggered, the speaker P1 will emit an audible alarm until the system is reset.
5. A voice-activated emergency stop control device according to claim 4, characterized in that, It is also equipped with a stop button S3, which is connected between the internal relay K1 and the reset button S1, and is used to cut off or open the voice-activated emergency stop control device.
6. A voice-activated emergency stop control device according to claim 5, characterized in that, The receiver is a noise sensor, model XM8165, which has a measurement range of 30-130dB and is paired with a noise monitoring and alarm device XD6765 to set a decibel threshold.
7. A voice-activated emergency stop control device according to claim 6, characterized in that, The upper end of the normally open contact of receiver BM is connected to power supply L1, and the lower end of the normally open contact of receiver BM is connected to the upper end of the coil of internal relay K1. The lower end of the coil of internal relay K1 is connected to power supply N1. The upper end of the normally closed contact of internal relay K1 is connected to power supply L1, and the lower end of the normally closed contact of internal relay K1 is connected to the upper end of the normally closed contact of S3. The lower end of the normally closed contact of S3 is connected to the upper end of the normally open contact of S1 and the upper end of the normally open contact of safety relay K2. The lower end of the normally open contact of S1 and the lower end of the normally open contact of safety relay K2 are connected to the upper end of the coil of K2. The lower end of the coil of safety relay K2 is connected to power supply N1. The upper end of the normally closed contact of safety relay K2 is connected to power supply L1, and the lower end is connected to the upper end of the coil of speaker P1. The lower end of the coil of speaker P1 is connected to power supply N1. The upper end of the normally open contact of safety relay K2 is connected to the lower end of S2, and the lower end is connected to the input terminal X1 of PLC.