A monitoring system for an industrial microwave oven and a monitoring method thereof

Abstract

A monitoring system for an industrial microwave oven and its monitoring method, which relates to the field of industrial microwave oven monitoring. In order to solve the defects that existing industrial microwave ovens cannot monitor whether a living body enters, cannot monitor whether there is material dumping, and cannot monitor the operating state of the industrial microwave oven at any time, the present invention adopts an anti-microwave shell arranged outside the converter. The anti-microwave shell is arranged inside the industrial microwave oven. The converter is arranged within the capture range of an image capture device. The image capture device is bidirectionally communicatively connected to a data processor. The data processor is bidirectionally communicatively connected to a control terminal. The control terminal is bidirectionally communicatively connected to a user. The present invention is mainly used for monitoring the working environment inside the industrial microwave oven.

Description

Technical Field

[0001] The present invention relates to the field of industrial microwave oven monitoring, and particularly to a monitoring system and a monitoring method for an industrial microwave oven. Background Art

[0002] During the use of existing large tunnel-type industrial microwave ovens, when materials are loaded, the front and rear furnace doors need to be closed to turn on the microwave. If someone enters the furnace for maintenance or other animals accidentally enter the furnace, and the person closing the furnace door does not know and closes the furnace door, the people or other animals inside the furnace will be in great danger. Since there is signal shielding inside and outside the furnace cavity, and there is a large amount of microwave inside the furnace, people inside the furnace cannot communicate with the outside world through communication tools. The only way is to knock on the furnace door and shout loudly. However, large tunnel-type industrial microwave ovens are huge in size. If no one near the outside of the furnace door discovers, then both people and other animals will be in life danger.

[0003] Secondly, after the furnace door is opened, the materials follow the transmission device to enter and exit the furnace cavity in sequence. When individual materials are dumped during the transmission process, it will cause damage to the waveguide or other furnace internal devices at the dumping point. The transmission device cannot sense it and still continues to operate. The transmission device will strongly drag the dumped materials, resulting in severe damage to a long row of waveguides or other furnace internal devices inside the furnace.

[0004] Moreover, it is very difficult to install an anti-dumping device inside the furnace. Because once the microwave is started, the microwave power inside the furnace reaches dozens of kilowatts, or even more than 100 kilowatts. Such a high-intensity microwave energy will damage the sensor or interfere with the sensor. Therefore, the sensor and its transmission line need to be protected against microwaves, which is very difficult. Currently, it is very rare to install an anti-dumping sensor inside large tunnel-type industrial microwave ovens.

[0005] When a fire breaks out inside the industrial microwave oven, it will only be discovered by the staff after the fire grows and thick smoke overflows, causing extensive equipment damage and burning a large amount of materials.

[0006] Currently, the operating state data information of large tunnel-type industrial microwave ovens is collected in the control cabinet or on the console, including the temperature inside the furnace, the quantity of materials to be dried, the working state of the microwave generating source, the working state of the air circulation fan inside the furnace, and the wind pressure, wind speed, and cooling air temperature generated by the cooling fan, etc. All are displayed on the touch screen or computer monitor of the control cabinet or console. In this way, manual monitoring is limited to a certain control cabinet or console, and it is impossible to manually monitor the operating conditions of the equipment at any time and anywhere.

[0007] Therefore, there is a need for a monitoring system and a monitoring method that can be installed inside the industrial microwave oven, can be applicable to the microwave environment, and can timely identify the entry of living bodies into the industrial microwave oven. Summary of the Invention

[0008] In order to solve the defects that existing industrial microwave ovens cannot monitor whether a living being enters, cannot monitor whether there is material dumping, and cannot monitor the operating state of industrial microwave ovens at any time, the present invention provides a monitoring system and a monitoring method that can be arranged inside an industrial microwave oven, can be applicable to a microwave environment, and can timely identify when a living being enters the industrial microwave oven.

[0009] A monitoring system for an industrial microwave oven according to the present invention includes in-oven equipment, out-of-oven equipment, and control room equipment; the in-oven equipment includes a converter and an image capturer; the out-of-oven equipment includes a data processor and a display device; the control room includes a control terminal; an anti-microwave housing is arranged outside the converter, the anti-microwave housing is arranged inside the industrial microwave oven, the converter is arranged within the capture range of the image capturer, the image capturer is bidirectionally communicatively connected to the data processor, the data processor is bidirectionally communicatively connected to the control terminal, and the control terminal is bidirectionally communicatively connected to the user.

[0010] Further: the converter includes a converter itself and a microwave energy sensor, and the output end of the microwave energy sensor is connected to the input end of the converter itself, and is used for converting the microwave energy signal received by the microwave energy sensor into electric energy and analyzing its intensity.

[0011] Further: the converter further includes a temperature sensor, and the output end of the temperature sensor is connected to the input end of the converter itself, and is used for receiving the temperature inside the oven collected by the temperature sensor.

[0012] Further: the in-oven equipment further includes an optical signal transmitter, and the output end of the converter is displayed through the optical signal transmitter, and the image capturer captures the optical signal emitted by the optical signal transmitter.

[0013] Further: the anti-microwave housing is provided with dot matrix holes, the optical signal transmitter is arranged in a light-emitting diode dot matrix and corresponds one by one to the dot matrix holes opened in the anti-microwave housing, and is used for displaying temperature values and microwave energy values, and the position of the light-emitting diode dot matrix is within the capture range of the image capturer.

[0014] Further: the optical signal transmitter uses a light-emitting diode.

[0015] Further: the control room further includes an encrypted wireless signal transmitter, the control terminal is connected to the user through the encrypted wireless signal transmitter, and the control terminal is a host computer.

[0016] Further: the out-of-oven equipment further includes an external controller, and the external controller is bidirectionally communicatively connected to the data processor.

[0017] Further: The external controller includes a PLC, a touch screen, an external temperature sensor, a humidity sensor, a wind speed sensor, a warning light and / or a buzzer.

[0018] The monitoring method of a monitoring system for an industrial microwave oven disclosed by the present invention specifically includes the following steps:

[0019] S1: Use a converter to obtain the microwave energy in the furnace and convert it into electric energy to supply power to the converter, and display the collected signals through an optical signal transmitter.

[0020] S2: Use an image capturer to capture the optical signals and image signals of the optical signal transmitter.

[0021] S3: Use a data processor to process the captured signals and display them through a display device, and at the same time upload the captured signals to a control terminal.

[0022] S4: The control terminal processes the obtained signals and feeds back the processing results to the data processor; at the same time, sends the information to an encrypted wireless signal transmitter for display.

[0023] The beneficial effects of the present invention are:

[0024] The present invention uses an image capturer and a converter that can be applicable to the microwave environment to convert the working conditions in the industrial microwave oven into electrical signals and upload them to a data processor. The external controller also uploads the obtained information to the data processor. The data processor packages the data and uploads it to the control terminal. Moreover, the data processor displays the information in the furnace (such as whether there is a living body, microwave intensity, temperature, etc.) and the information measured by the external controller on the display device. The control terminal also displays the data received from the data processor on the screen of the control terminal, and sends a command to the data processor, and the data processor then transmits it to the image capturer.

[0025] The present invention can also judge whether the temperature in the furnace exceeds a preset threshold according to the temperature signal; if the temperature has exceeded the preset threshold, compare the image signals in the furnace to judge whether a fire has occurred. Description of the Drawings

[0026] Figure 1 is a monitoring system for an industrial microwave oven;

[0027] Figure 2 is a schematic structural diagram of a microwave-proof outer shell with dot matrix holes;

[0028] Figure 3 is a schematic structural diagram of the equipment in the furnace;

[0029] Figure 4 is a flowchart of the monitoring method of a monitoring system for an industrial microwave oven. Detailed implementation manners

[0030] The following are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. The following embodiments are only used to explain the present invention and cannot be construed as a limitation of the present invention. The protection scope of the present invention should be subject to the protection scope of the claims. The embodiments of the present invention are described in detail below. For the convenience of describing the present invention and simplifying the description, the technical terms used in the specification of the present invention should be interpreted in a broad sense, including but not limited to conventional substitution schemes not mentioned in this application, and including both direct implementation methods and indirect implementation methods.

[0031] Embodiment 1

[0032] Combined with Figure 1 - Figure 2 To illustrate this embodiment, a monitoring system for an industrial microwave oven disclosed in this embodiment includes in-furnace equipment, out-of-furnace equipment, and control room equipment; the in-furnace equipment includes a converter and an image capturer; the out-of-furnace equipment includes a data processor and a display device; the control room includes a control terminal; an anti-microwave housing is arranged outside the converter, the anti-microwave housing is arranged inside the industrial microwave oven, the converter is arranged within the capture range of the image capturer, the image capturer is bidirectionally communicatively connected to the data processor, the data processor is bidirectionally communicatively connected to the control terminal, and the control terminal is bidirectionally communicatively connected to the user.

[0033] As Figure 3 shown, the number of the converters is set according to actual needs, as long as it is arranged within the capture range of the image capturer and meets the requirement that it can be recognized by the image capturer. The image capturer can adapt to the microwave environment, and converts the material image signal in the industrial microwave oven into an electrical signal through the image capturer. The image capturer judges the material state and whether there is a living body in the furnace according to the acquired image signal. The image capturer can adopt an industrial camera or a camera resistant to microwaves. The display device can adopt an LED dot matrix screen or other display screens. The out-of-furnace equipment can be arranged on the furnace top or on the side wall, and is specifically adjusted flexibly according to actual situations.

[0034] This embodiment further includes a temperature sensor, and the output end of the temperature sensor is communicatively connected to the input end of the converter. Judge whether the temperature in the furnace exceeds a preset threshold according to the temperature signal; if the temperature has exceeded the preset threshold, compare the in-furnace image signal to judge whether a fire has occurred. If the threshold is not exceeded, there is no need to start the fire judgment.

[0035] Meanwhile, the external signals obtained by the existing external controller of the microwave setting are also transmitted to the data processor for analysis and calculation to obtain whether the working states of all working components are normal. Finally, all the data after analysis and calculation by the data processor are sent to the control terminal, so as to realize remote safety monitoring of the microwave environment in the industrial microwave oven and prevent people and other living things from being inside the oven. The external controller includes a PLC, a touch screen and / or an external sensor, etc.

[0036] The control terminal can also be sent to a mobile phone or a mobile communication tool through an encrypted wireless transmitter. The decryption software referred to in this embodiment installed on the mobile communication function tool is decrypted and then displayed on the mobile communication tool.

[0037] To prevent equipment damage caused by material dumping; add an alarm function after a fire breaks out in the industrial microwave oven; including alarm structures such as warning lights and buzzers, the alarm function for the fire can be realized; by collecting the working data of each component of the industrial microwave oven, flexible Internet of Things and human-machine networking are achieved, which is convenient for staff to monitor the industrial microwave oven anytime and anywhere, making the operation of the industrial microwave oven safer and more reliable.

[0038] The anti-microwave housing set in this embodiment is an anti-microwave metal housing. The anti-microwave metal housing is an approximately closed metal container, which is used to protect electronic devices such as cameras and sensors from being damaged by microwaves. The openings for communication between the anti-microwave metal housing and the outside must meet the requirement that the opening diameter is less than 1 / 4 of the microwave wavelength, so that microwaves will not enter the anti-microwave metal housing, thus protecting the internal electronic devices. The round hole with a diameter less than 1 / 4 of the microwave wavelength fully meets the diameter requirements of the observation port needed by the camera of the image capturer, and is also sufficient to meet the access holes for other signal lines. The microwave frequency in the tunnel-type industrial microwave oven is generally 2450 MHz, so an aperture less than 30 mm is sufficient, and it is very easy to select an image capturer with a viewing aperture of less than 20 mm. It is usually made of materials with good electrical conductivity and shielding performance such as steel, copper, aluminum, and alloys, which can effectively prevent microwave radiation from damaging the internal image capturer or temperature sensor.

[0039] This embodiment also includes a converter, which converts microwave energy into electrical energy to supply power to the temperature sensor, microwave energy sensor, display or visible light signal transmission device. The microwave energy converter includes a microwave receiving antenna, a radio frequency rectification circuit, a filtering and voltage stabilizing circuit, etc. After the microwave antenna receives microwave energy and converts it into electrical energy, unstable direct current is obtained through the radio frequency rectification circuit, and then through the filtering circuit to make the direct current stable. Finally, the required voltage source is obtained through the voltage stabilizing circuit. Except that the antenna of the converter is placed naked in the microwave environment, other components are also installed in the microwave shielding box.

[0040] The temperature sensor and the microwave energy sensor transmit signals to a display device or a visible light signal transmitting device. Then, a digital signal or a visible light signal of a certain frequency emitted by the transducer is obtained by an image capturer. Subsequently, a computer analyzes the signals to obtain the temperature value and the microwave energy value. The temperature sensor selects a sensor with a metal shell, and the signal is conducted through a shielded wire. For the microwave energy sensor, except for the component that senses microwave energy being exposed to the microwave environment, the other components are installed in a microwave shielding box, and the signal is conducted through a shielded wire.

[0041] In this embodiment, a visible light signal transmitting device is also provided. An illuminating light bead can be selected to assist the camera of the image capturer in photographing the furnace interior environment, thereby improving the clarity and image quality of the furnace interior image and avoiding misjudgment by the subsequent data processor.

[0042] In this embodiment, the metal shell has dot matrix holes, and the visible light signal transmitting device is arranged in a light-emitting diode dot matrix. The light-emitting diode dot matrix directly displays the temperature value and the microwave energy value. Then, the image capturer directly acquires the data, and then the data processor directly calculates the data to obtain communication data and sends the communication data to an encrypted wireless signal transmitter.

[0043] The optical signal transmitter is used to send out the data obtained by the temperature sensor and the microwave energy sensor through an optical signal emitter, including a conversion device for converting the signal into a clock signal and a pulse signal, a driving device, a light-emitting diode representing the clock signal, a light-emitting diode representing the pulse high and low levels, and a metal shell with holes. To shield microwaves and prevent damage to electronic devices, the diameter of the holes is much smaller than 1 / 4 of the wavelength of the microwave. The signal sending and expressing method is as follows: The light-emitting diode representing the clock signal alternately lights and extinguishes to represent 1 and 0, and the speed of alternation represents the clock frequency. The light-emitting diode representing the pulse high and low levels lights and extinguishes to represent 1 and 0. When it lights, if the light-emitting diode representing the clock lights once and then extinguishes, it represents 1. If the light-emitting diode representing the clock lights twice before extinguishing, it represents 11. Similarly, 0 and 00 can also be represented; and so on. Then, it can also be directly observed on the camera, and then the data is sent to the control terminal.

[0044] Embodiment 2

[0045] Combined with Embodiment 1 and Figure 3 This embodiment will be described. A monitoring method for a monitoring system of an industrial microwave oven disclosed in this embodiment specifically includes the following steps:

[0046] S1: Use a transducer to obtain the microwave energy in the furnace and convert it into electrical energy, supply electrical energy to the transducer, and display the collected signal through an optical signal transmitter;

[0047] S2: Use an image capturer to capture the optical signal and the image signal of the optical signal transmitter;

[0048] S3: Use a data processor to process the captured signal, display it through a display device, and upload the captured signal to the control terminal at the same time;

[0049] S4: The control terminal processes the obtained signal and feeds back the processing result to the data processor; at the same time, send the information to the encrypted wireless signal transmitter for display.

Claims

1. A monitoring system for industrial microwave ovens, characterized in that: The invention comprises equipment inside the furnace, equipment outside the furnace, and equipment in a control room; the equipment inside the furnace comprises a converter and an image capturer; the equipment outside the furnace comprises a data processor and a display device; the control room comprises a control terminal; a microwave-proof shell is arranged on the outer side of the converter, the microwave-proof shell is arranged inside the industrial microwave oven, the converter is arranged within the capture range of the image capturer, the image capturer is connected to the data processor in a two-way communication manner, the data processor is connected to the control terminal in a two-way communication manner, and the control terminal is connected to the user in a two-way communication manner; The furnace equipment further comprises an optical signal transmitter, the output end of the converter is displayed via the optical signal transmitter, and the image capturer captures the optical signal emitted by the optical signal transmitter; The microwave-proof shell is provided with dot matrix holes, and the optical signal transmitter is arranged with a light-emitting diode dot matrix and corresponds one-to-one with the dot matrix holes provided in the microwave-proof shell, and is used to display temperature values ​​and microwave energy values, and the position of the light-emitting diode dot matrix is ​​within the capture range of the image capturer.

2. A monitoring system for industrial microwave ovens according to claim 1, characterized in that: The converter includes a converter unit and a microwave energy sensor. The output end of the microwave energy sensor is connected to the input end of the converter unit to convert the microwave energy signal received by the microwave energy sensor into electrical energy and analyze its intensity.

3. A monitoring system for industrial microwave ovens according to claim 1, characterized in that: The converter also includes a temperature sensor, the output end of which is connected to the input end of the converter to receive the furnace temperature collected by the temperature sensor.

4. A monitoring system for industrial microwave ovens according to claim 1, characterized in that: The optical signal transmitter adopts a light emitting diode.

5. A monitoring system for industrial microwave ovens according to claim 1, characterized in that: The control room also includes an encrypted wireless signal transmitter, and the control terminal is connected to the user via the encrypted wireless signal transmitter, and the control terminal is a host computer.

6. A monitoring system for industrial microwave ovens according to claim 1, characterized in that: The external device further comprises an external controller, and the external controller is connected to the data processor for bidirectional communication.

7. A monitoring system for industrial microwave ovens according to claim 6, characterized in that: The external controller includes a PLC, a touch screen, an external temperature sensor, a humidity sensor, a wind speed sensor, a warning light and / or a buzzer.

8. A monitoring method for an industrial microwave oven monitoring system based on any one of claims 1 to 7, characterized in that: The specific steps include: S1: Use a converter to obtain microwave energy in the furnace and convert it into electrical energy, supply electrical energy to the converter, and display the collected signal through an optical signal transmitter; S2: using an image capturer to capture the optical signal and image signal of the optical signal transmitter; S3: Processing the captured signal using a data processor, displaying it through a display device, and uploading the captured signal to a control terminal; S4: The control terminal processes the obtained signal and feeds back the processing result to the data processor; at the same time, the information is sent to the encrypted wireless signal transmitter for display.

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