Motor operation monitoring and protecting device for granary

Abstract

The utility model relates to the technical field of granary motor monitoring, in particular to a motor operation monitoring protection device for a granary, which comprises a parameter monitoring mechanism and a remote alarm mechanism, and is characterized in that the parameter monitoring mechanism comprises a first controller, a sensor set, a first communication module and a relay; the first controller is respectively connected with the sensor set and the first communication module; the sensor set comprises a temperature sensor used for collecting the operation temperature of the motor, a current sensor used for collecting the operation current of the motor, and a voltage sensor used for collecting the operation voltage of the motor. The input end of the relay is connected with the output end of the first controller, and the output end of the relay is connected with the output end of the motor power supply; the remote alarm mechanism comprises a second controller, a second communication module and an alarm; the second controller is electrically connected with the second communication module and the alarm. The parameter monitoring mechanism and the remote alarm mechanism are in communication connection through the first communication module and the second communication module.

Description

Technical Field

[0001] The utility model relates to the technical field of granary motor monitoring, in particular to a motor operation monitoring and protection device for a granary. Background Art

[0002] In the field of grain storage and management, the motor systems of grain silos play a vital role. They are responsible for driving key equipment such as ventilation, dehumidification, and temperature control, ensuring a stable and safe grain storage environment. However, motor failures are common during operation due to factors such as long operation, overload, voltage fluctuations, or excessive ambient temperatures. This can not only damage the equipment but also cause safety hazards such as fires, posing a serious threat to food security and grain silo facilities.

[0003] Although existing motor monitoring and protection devices can monitor parameters in granaries, they generally have the following problems:

[0004] Most existing monitoring devices can only monitor a certain parameter of the motor (such as temperature or current) and cannot fully monitor the operating status of the motor.

[0005] Many monitoring devices do not have remote alarm functions. Once a motor fails, manual inspection and processing are required on site, and timely early warning is impossible. Utility Model Content

[0006] The technical problem solved by the utility model is to provide a motor operation monitoring and protection device for a granary, which can realize comprehensive detection of the motor operation status and realize remote alarm function, greatly improving the timeliness and comprehensiveness of the operation safety warning of the motor in the granary.

[0007] The utility model provides a basic solution: a motor operation monitoring and protection device for a granary, comprising a parameter monitoring mechanism and a remote alarm mechanism, wherein the parameter monitoring mechanism comprises a first controller, a sensor set, a first communication module, and a relay; the first controller is connected to the sensor set and the first communication module respectively; the sensor set comprises a temperature sensor for collecting the motor operating temperature, a current sensor for collecting the motor operating current, and a voltage sensor for collecting the motor operating voltage; the input end of the relay is connected to the output end of the first controller, and the output end of the relay is connected to the output end of the motor power supply;

[0008] The remote alarm mechanism includes a second controller, a second communication module and an alarm; the second controller is electrically connected to the second communication module and the alarm respectively;

[0009] The parameter monitoring mechanism and the remote alarm mechanism are communicatively connected via a first communication module and a second communication module.

[0010] The principle and advantage of the present utility model are as follows: in this solution, the temperature sensor, current sensor and voltage sensor in the sensor set monitor the operating parameters of the motor in real time and transmit these data to the first controller. The first controller receives the data from the sensor and determines whether the motor is in normal working condition based on the preset threshold value. If it is detected that the operating parameters of the motor are out of the normal range (for example, the temperature is too high, the current is too large or the voltage is unstable), the first controller will trigger the relay to cut off the power supply of the motor to prevent the motor from being damaged or causing safety accidents such as fire. The first controller sends the alarm signal to the remote alarm mechanism through the first communication module so as to notify the relevant personnel in time. The second controller in the remote alarm mechanism is used to receive the alarm signal transmitted by the first communication module through the second communication module and start the alarm to alarm, thereby realizing remote monitoring and early warning of abnormalities in the operation of the motor.

[0011] In this solution, a sensor set is set up to achieve comprehensive monitoring of multiple parameters of the operating status of the motor in the granary. The remote alarm function is realized through the communication connection between the parameter monitoring mechanism and the remote alarm mechanism, that is, the comprehensive detection of the motor operating status is achieved while the remote alarm function is realized, which greatly improves the timeliness and comprehensiveness of the operation safety warning of the motor in the granary.

[0012] Furthermore, the temperature sensor is fixed to the motor via a fixing member, and the temperature sensor is in contact with the motor.

[0013] Beneficial effect: The temperature sensor is fixed to the motor through a fixing piece, and the temperature sensor is also in contact with the motor, thereby achieving accurate detection of the temperature of the motor.

[0014] Furthermore, the fixing member is a high temperature resistant adhesive material.

[0015] Furthermore, the fixing member comprises an upper clip, a lower clip, a connecting shaft and a torsion spring; the upper clip and the lower clip are both provided with through holes, the connecting shaft passes through the corresponding through holes to connect the upper clip and the lower clip together, one end of the torsion spring is fixedly connected to the upper clip, and the other end of the torsion spring is fixedly connected to the lower clip;

[0016] The upper clip is provided with a mounting groove for placing the temperature sensor, and the temperature sensor extends out of the mounting groove.

[0017] Benefits: The upper and lower clamps are connected by a connecting shaft and can be easily opened and closed, facilitating installation and removal of the temperature sensor. The clamping force provided by the torsion spring ensures a tight fit between the upper and lower clamps, securing the temperature sensor securely. The mounting groove design on the upper clamp ensures close contact between the temperature sensor and the motor heat sink, improving measurement accuracy. The distance between the upper and lower clamps can be adjusted to accommodate temperature sensors of varying sizes, enhancing versatility.

[0018] Furthermore, a thermal pad is provided between the temperature sensor and the motor.

[0019] Beneficial Effects: The thermal pad has excellent thermal conductivity and can effectively transfer heat from the motor surface to the temperature sensor, thereby improving temperature monitoring accuracy. Air is a poor conductor of heat, so the thermal pad can eliminate the air layer between the sensor and the motor, improving heat transfer efficiency. Good contact and uniform heat distribution can reduce measurement errors, allowing the temperature sensor to more accurately reflect the actual motor temperature. The thermal pad can also absorb some vibration and impact on the motor surface, reducing mechanical stress on the temperature sensor and extending its service life.

[0020] Furthermore, the first communication module and the second communication module are both wireless communication modules.

[0021] Beneficial effects: Wireless communication does not require wiring and is easy to install.

[0022] Furthermore, the wireless communication module includes one or more of a WiFi module, a Bluetooth module, a ZigBee module, and a Lora module.

[0023] Beneficial effects: Multiple networking modes, greater versatility.

[0024] Furthermore, the alarm includes a warning light and a buzzer.

[0025] Beneficial effect: Dual prompts through sound and light tubes ensure that remote managers can receive alarm reminders.

[0026] Furthermore, it also includes a delay module and a button electrically connected to the second controller.

[0027] Beneficial effect: In this solution, the second controller in the remote alarm mechanism is used to receive the alarm signal transmitted by the first communication module through the second communication module, and after starting the alarm to sound the alarm, the delay module is started to delay for a period of time. If during the delay, the remote management personnel receives the corresponding alarm, then presses the button. The second controller is used to detect that the button is pressed during the delay process, then turn off the alarm, otherwise the alarm will continue. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a logic block diagram of the motor operation monitoring and protection device for a granary in Example 1 of the present utility model.

[0029] Figure 2 This is a schematic structural diagram of the fixing member in Example 1 of the present utility model. DETAILED DESCRIPTION

[0030] The following is further described in detail through specific implementation methods:

[0031] The symbols in the drawings of the specification include: upper clamping piece 1, lower clamping piece 2, and connecting shaft 3.

[0032] The embodiment is basically as shown in the attached Figure 1 and Figure 2 As shown: A motor operation monitoring and protection device for a granary, including a parameter monitoring mechanism and a remote alarm mechanism, the parameter monitoring mechanism including a first controller, a sensor set, a first communication module and a relay; the first controller is connected to the sensor set and the first communication module respectively, the sensor set includes a temperature sensor for collecting the motor operating temperature, a current sensor for collecting the motor operating current and a voltage sensor for collecting the motor operating voltage; the input end of the relay is connected to the output end of the first controller, and the output end of the relay is connected to the output end of the motor power supply.

[0033] The temperature sensor is fixed to the motor via a fixing member, and the temperature sensor is in contact with the motor. In this embodiment, the fixing member comprises an upper clip 1, a lower clip 2, a connecting shaft 3, and a torsion spring. Both the upper clip 1 and the lower clip 2 are provided with through holes, and the connecting shaft 3 passes through the corresponding through holes to connect the upper clip 1 and the lower clip 2 together. One end of the torsion spring is fixedly connected to the upper clip 1, and the other end of the torsion spring is fixedly connected to the lower clip 2.

[0034] The upper clip 1 has a mounting slot for a temperature sensor, which extends beyond the mounting slot. In this embodiment, a thermal pad is positioned between the temperature sensor and the motor to enhance its sensitivity in monitoring the motor's operating temperature. In another embodiment, the fixing member is a high-temperature-resistant adhesive, such as epoxy resin glue.

[0035] The remote alarm mechanism includes a second controller, a delay module, a button, a second communication module and an alarm; the second controller is electrically connected to the second communication module, the delay module, the button and the alarm respectively; in this embodiment, an alarm is also provided on the parameter monitoring mechanism. Through the setting of the alarm, it is convenient for remote management personnel to find the location of the motor with abnormal parameter operation as soon as possible when performing motor repair or maintenance.

[0036] The parameter monitoring mechanism and the remote alarm mechanism are connected to each other through a first communication module and a second communication module. The first communication module and the second communication module are both wireless communication modules, and the wireless communication modules include one or more of a WiFi module, a Bluetooth module, a ZigBee module, and a Lora module. In this embodiment, WiFi modules are used.

[0037] First, install each sensor on the motor. Specifically, clamp the temperature sensor on the heat sink of the motor through a fixing piece so that the temperature sensor is in contact with the heat sink of the motor. Of course, if it is set in other places, it can also be fixed by a fixing piece.

[0038] The first controller in the parameter monitoring mechanism is configured to monitor the motor's operating temperature, current, and voltage in real time using a temperature sensor, a current sensor, and a voltage sensor. When the corresponding operating temperature, current, and voltage exceed corresponding preset thresholds (e.g., excessive temperature, excessive current, or unstable voltage), the first controller triggers a relay to cut off the motor's power supply to prevent damage to the motor or fire or other safety hazards. The first controller also transmits an alarm signal to a remote alarm mechanism via a first communication module for timely notification of relevant personnel. The second controller in the remote alarm mechanism receives the alarm signal transmitted by the first communication module via a second communication module, activates an alarm, and then activates a delay module for a period of time. If a remote administrator receives the corresponding alarm during the delay period and presses a button, the second controller detects that the button has been pressed during the delay period and turns off the alarm; otherwise, the alarm continues.

[0039] The first controller and the second controller can both be single-chip microcomputers or programmable logic controllers (PLCs). In this embodiment, both use STM32 series single-chip microcomputers, specifically STM32H7 high-performance series single-chip microcomputers. The temperature sensor uses a Pt100, the current sensor uses an ACS758 Hall effect sensor, and the voltage sensor uses a PT100 voltage transformer. The alarm includes a buzzer and a warning light, which is a red LED. The delay module can be implemented using a timer built into the single-chip microcomputer, or using a 555 chip and its external circuitry. In this embodiment, the timer inside the single-chip microcomputer is used, and the delay duration is 10 seconds.

[0040] The above are only embodiments of the present utility model. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A motor operation monitoring and protection device for a granary, characterized by: The system comprises a parameter monitoring mechanism and a remote alarm mechanism, wherein the parameter monitoring mechanism comprises a first controller, a sensor set, a first communication module, and a relay; the first controller is connected to the sensor set and the first communication module respectively; the sensor set comprises a temperature sensor for collecting the operating temperature of the motor, a current sensor for collecting the operating current of the motor, and a voltage sensor for collecting the operating voltage of the motor; the input end of the relay is connected to the output end of the first controller, and the output end of the relay is connected to the output end of the motor power supply; The remote alarm mechanism includes a second controller, a second communication module and an alarm; the second controller is electrically connected to the second communication module and the alarm respectively; The parameter monitoring mechanism and the remote alarm mechanism are communicatively connected via a first communication module and a second communication module.

2. The motor operation monitoring and protection device for a granary according to claim 1, characterized in that: The temperature sensor is fixed on the motor through a fixing piece, and the temperature sensor is in contact with the motor.

3. The motor operation monitoring and protection device for a granary according to claim 2, characterized in that: The fixing piece is a high temperature resistant adhesive material.

4. The motor operation monitoring and protection device for a granary according to claim 2, characterized in that: The fixing member comprises an upper clip, a lower clip, a connecting shaft and a torsion spring; the upper clip and the lower clip are both provided with through holes, the connecting shaft passes through the corresponding through holes to connect the upper clip and the lower clip together, one end of the torsion spring is fixedly connected to the upper clip, and the other end of the torsion spring is fixedly connected to the lower clip; The upper clip is provided with a mounting groove for placing the temperature sensor, and the temperature sensor extends out of the mounting groove.

5. The motor operation monitoring and protection device for a granary according to claim 4, characterized in that: A thermal pad is provided between the temperature sensor and the motor.

6. The motor operation monitoring and protection device for a granary according to claim 5, characterized in that: The first communication module and the second communication module are both wireless communication modules.

7. The motor operation monitoring and protection device for a granary according to claim 6, characterized in that: The wireless communication module includes one or more of a WiFi module, a Bluetooth module, a ZigBee module, and a Lora module.

8. The motor operation monitoring and protection device for a granary according to claim 7, characterized in that: The alarm includes a warning light and a buzzer.

9. The motor operation monitoring and protection device for a granary according to claim 8, characterized in that: It also includes a delay module and a button electrically connected to the second controller.

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