Low-voltage unipolar electric field

Abstract

The utility model relates to the technical field of electric field preservation, in particular to a low-voltage unipolar electric field. The low-voltage electric field is used for preserving freshness, the master control loop and the input loop are connected with the low-voltage electric field, the master control loop is located on site and comprises a PLC (programmable logic controller), a relay module and a temperature and humidity sensor, and the PLC receives temperature and humidity information of the site through the temperature and humidity sensor and transmits the temperature and humidity information to the input loop. The relay module is connected with the low-voltage electric field, so that the low-voltage electric field is controlled to release negative ions for fresh keeping; the input loop is located at the background and comprises a touch screen, and the touch screen is connected with the PLC through a screen switch and a fresh-keeping switch. According to the utility model, the master control loop and the input loop are added, and the low-voltage electric field is controlled by the PLC to release negative ions according to the temperature and humidity information, so that the fresh-keeping environment is accurately adjusted, and the field fresh-keeping effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric field preservation technology, specifically to a low-voltage unipolar electric field. Background Technology

[0002] Traditional food preservation methods, such as refrigeration and modified atmosphere packaging, while extending shelf life, face challenges such as high energy consumption and limited preservation effects. To address these issues, engineers are constantly exploring new preservation technologies. For example, Chinese patent CN118489675A proposes a method for preserving Phalaenopsis cut flowers using a low-voltage electrostatic field to activate a hypochlorous acid electrolytic preservative solution. This method creates a negative ion environment through a low-voltage electrostatic field, altering the electric field distribution on the cut flower surface, activating the activity of hypochlorous acid electrolysis, killing bacteria, reducing microbial contamination, and minimizing water loss through the weak adsorption force of the electric field, maintaining a low cellular respiration level, and preserving the cut flower's water metabolism. However, existing electric field preservation systems are complex to operate and lack precise control of the preservation environment, requiring further optimization. Utility Model Content

[0003] The technical problem to be solved by this invention is to overcome the shortcomings of the prior art and provide a low-voltage unipolar electric field.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A low-voltage monopole electric field includes a low-voltage electric field for food preservation, and a main control circuit and an input circuit connected to the low-voltage electric field, wherein:

[0006] The main control circuit, located on-site, includes a PLC controller, a relay module, and a temperature and humidity sensor. The PLC controller receives temperature and humidity information from the field through the temperature and humidity sensor and connects to the low-voltage electric field through the relay module, thereby controlling the low-voltage electric field to release negative ions for preservation.

[0007] The input circuit, located in the background, includes a touch screen, which is connected to the PLC controller via a screen switch and a preservation switch; below the touch screen are indicator lights I and II, which are also connected to the PLC controller.

[0008] This technical solution improves the on-site preservation effect by adding a main control circuit and an input circuit, and using a PLC controller to control the release of negative ions from a low-voltage electric field based on temperature and humidity information. Specifically, the low-voltage electric field releases negative ions, which act on the air and food surface within the storage space. These negative ions purify the air, inhibit bacterial growth, and slow down food oxidation, thus extending the shelf life of the food. Temperature and humidity sensors monitor the temperature and humidity of the storage space in real time and feed the data back to the PLC controller. A relay module acts as an actuator, controlling the switching and intensity of the low-voltage electric field according to the PLC controller's settings. The PLC controller dynamically adjusts the operating parameters of the low-voltage electric field based on preset preservation conditions and real-time temperature and humidity data. For example, when the temperature and humidity exceed the preset range, the PLC controller increases the intensity of the electric field to enhance the preservation effect. Indicator lights I and II display the system's operating status; for example, indicator light I indicates that the preservation status is satisfactory, while indicator light II indicates that the preservation status is unsatisfactory. Users can conveniently set and adjust preservation parameters via a touchscreen, and the system can automatically adjust the electric field state based on real-time temperature and humidity data to achieve the best preservation effect.

[0009] In addition, the low-voltage unipolar electric field proposed in this utility model also has the following additional technical features:

[0010] According to one embodiment of the present invention, the low-voltage electric field includes at least a low-voltage pulsed electric field I and a low-voltage pulsed electric field II, wherein the pulsed electric field intensity of the low-voltage pulsed electric field I and the low-voltage pulsed electric field II ranges from 20 to 1000 kV / m and the pulse frequency ranges from 50 to 200 Hz.

[0011] This technical solution optimizes the preservation effect by setting a low-voltage electric field that includes at least two low-voltage pulse electric fields and specifying the range of pulse electric field strength and frequency.

[0012] According to one embodiment of the present invention, the main control circuit further includes a power supply module, which is electrically connected to the low-voltage electric field, the PLC controller, the relay module, and the touch screen.

[0013] This technical solution provides power support for the low-voltage electric field, PLC controller, relay module and touch screen by adding a power module to the main control circuit.

[0014] According to one embodiment of the present invention, the low-voltage electric field is a low-voltage pulse generator, and the PLC controller includes a high-voltage side electrode plate and a low-voltage side electrode. Negative ions for preservation are released by generating an arc discharge between the high-voltage side electrode plate and the low-voltage side electrode connected to the power module.

[0015] This technical solution uses a low-voltage electric field as a low-voltage pulse generator, and utilizes the high-voltage side electrode plate and low-voltage side electrode in the PLC controller to generate an arc discharge to release negative ions, thereby achieving the preservation function.

[0016] According to one embodiment of the present invention, the PLC controller is also connected to an atomizer, a heating wire, and a sterilization device; the PLC controller adjusts the humidity, temperature, and sterilization status of the site through the atomizer, heating wire, and sterilization device.

[0017] This technical solution connects the atomizer, heating wire, and sterilization device through a PLC controller to adjust the humidity, temperature, and sterilization status on-site, thereby improving the preservation effect.

[0018] According to one embodiment of the present invention, indicator light I and indicator light II are used to indicate whether the preservation is qualified or unqualified on site; indicator light I is a green indicator light and indicator light II is a red indicator light.

[0019] This technical solution uses indicator lights I and II to indicate whether the preservation is up to standard or not, providing intuitive feedback on the preservation status.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] By adding a main control circuit and an input circuit, and using a PLC controller to control the release of negative ions from a low-voltage electric field based on temperature and humidity information, the preservation environment can be precisely adjusted, thereby improving the on-site preservation effect. Attached Figure Description

[0022] Figure 1 This is one of the electrical connection diagrams of this utility model.

[0023] Figure 2 This is the second electrical connection diagram of this utility model.

[0024] In the diagram: 1. Low-voltage electric field; 11. Low-voltage pulse electric field I; 12. Low-voltage pulse electric field II; 2. Main control circuit; 21. PLC controller; 22. Power supply module; 23. Relay module; 24. Temperature and humidity sensor; 3. Input circuit; 31. Touch screen; 32. Screen switch; 33. Freshness preservation switch; 34. Indicator light I; 35. Indicator light II. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides a low-voltage unipolar electric field, including a low-voltage electric field 1 for preservation, and a main control circuit 2 and an input circuit 3 connected to the low-voltage electric field 1, wherein:

[0028] The main control circuit 2, located on-site, includes a PLC controller 21, a relay module 23, and a temperature and humidity sensor 24. The PLC controller 21 receives the temperature and humidity information on-site through the temperature and humidity sensor 24 and is connected to the low-voltage electric field 1 through the relay module 23, thereby controlling the low-voltage electric field 1 to release negative ions for preservation.

[0029] Input circuit 3, located in the background, includes a touch screen 31, which is connected to the PLC controller 21 via a screen switch 32 and a preservation switch 33; below the touch screen 31 are indicator lights I 34 and II 35, which are connected to the PLC controller 21.

[0030] like Figure 1 and Figure 2 As shown, this technical solution increases the main control circuit 2 and the input circuit 3, and uses the PLC controller 21 to control the low-voltage electric field 1 to release negative ions according to the temperature and humidity information, thereby achieving precise adjustment of the preservation environment and improving the on-site preservation effect. Specifically, the low-voltage electric field 1 releases negative ions, which act on the air and food surface within the storage space. These negative ions purify the air, inhibit bacterial growth, and slow down food oxidation, thus extending the shelf life of the food. The temperature and humidity sensor 24 monitors the temperature and humidity of the storage space in real time and feeds the data back to the PLC controller 21. The relay module 23 acts as an actuator, controlling the switching and intensity of the low-voltage electric field 1 according to the PLC controller 21. The PLC controller 21 dynamically adjusts the operating parameters of the low-voltage electric field 1 based on preset preservation conditions and real-time monitored temperature and humidity data. For example, when the temperature and humidity exceed the preset range, the PLC controller 21 increases the intensity of the electric field to enhance the preservation effect. Indicator lights I 34 and II 35 display the system's operating status. For example, indicator light I 34 indicates that the preservation status is acceptable, while indicator light II 35 indicates that the preservation status is unacceptable. Users can conveniently set and adjust preservation parameters via the touchscreen 31, and the system can automatically adjust the electric field state based on real-time monitored temperature and humidity data to achieve the best preservation effect.

[0031] In addition, the low-voltage unipolar electric field proposed in this utility model also has the following additional technical features:

[0032] According to one embodiment of the present invention, the low-voltage electric field 1 includes at least a low-voltage pulsed electric field I11 and a low-voltage pulsed electric field II12, wherein the pulsed electric field intensity of the low-voltage pulsed electric field I11 and the low-voltage pulsed electric field II12 ranges from 20 to 1000 kV / m and the pulse frequency ranges from 50 to 200 Hz.

[0033] This technical solution optimizes the preservation effect by setting the low-voltage electric field 1 to include at least two low-voltage pulse electric fields and specifying the range of pulse electric field strength and frequency.

[0034] According to one embodiment of the present invention, the main control circuit 2 further includes a power supply module 22, which is electrically connected to the low-voltage electric field 1, the PLC controller 21, the relay module 23, and the touch screen 31.

[0035] This technical solution provides power support for the low-voltage electric field 1, PLC controller 21, relay module 23 and touch screen 31 by adding a power module 22 to the main control circuit 2.

[0036] According to one embodiment of the present invention, the low-voltage electric field 1 is a low-voltage pulse generator, and the PLC controller 21 includes a high-voltage side electrode plate and a low-voltage side electrode. The negative ions for preservation are released by generating an arc discharge between the high-voltage side electrode plate and the low-voltage side electrode connected to the power module 22.

[0037] This technical solution uses the low-voltage electric field 1 as a low-voltage pulse generator, and utilizes the high-voltage side electrode plate and low-voltage side electrode in the PLC controller 21 to generate an arc discharge to release negative ions, thereby achieving the preservation function.

[0038] According to one embodiment of the present invention, the PLC controller 21 is also connected to an atomizer, a heating wire, and a sterilization device; the PLC controller 21 adjusts the humidity, temperature, and sterilization status of the site through the atomizer, heating wire, and sterilization device.

[0039] This technical solution connects the atomizer, heating wire, and sterilization device to the PLC controller 21 to adjust the humidity, temperature, and sterilization status on site, thereby improving the preservation effect.

[0040] According to one embodiment of the present invention, indicator light I 34 and indicator light II 35 are used to indicate whether the preservation is qualified or not on site; indicator light I 34 is a green indicator light and indicator light II 35 is a red indicator light.

[0041] This technical solution uses indicator lights I34 and II35 to indicate whether the preservation is qualified or not, providing intuitive feedback on the preservation status.

[0042] The usage process of the above embodiments is as follows: Figure 1 and Figure 2 As shown, the temperature and humidity sensor 24 monitors the temperature and humidity information of the storage space in real time and feeds the data back to the PLC controller 21. The PLC controller 21 dynamically adjusts the operating parameters of the low-voltage electric field 1 according to the preset preservation conditions and the real-time monitored temperature and humidity data. The low-voltage electric field 1 includes at least two low-voltage pulse electric fields, which release negative ions to act on the air and food surface in the storage space. The negative ions have the functions of purifying the air, inhibiting bacterial growth, and slowing down food oxidation. The relay module 23 acts as an actuator to control the switching of the low-voltage electric field 1 according to the instructions of the PLC controller 21. The system increases the electric field strength when the temperature and humidity exceed the preset range to enhance the preservation effect. Simultaneously, the system displays the preservation status as qualified or unqualified via green indicator light I 34 and red indicator light II 35. Users can conveniently set and adjust preservation parameters via the touchscreen 31. Furthermore, the PLC controller 21 is connected to an atomizer, heating wire, and sterilization device to regulate humidity, temperature, and sterilization conditions, thereby improving the preservation effect. The entire system achieves optimized regulation of the preservation environment and extends the shelf life of food through precise temperature and humidity monitoring and electric field control.

[0043] It should be noted that this utility model only improves the hardware electrical components and does not make any improvements to the software algorithm. The algorithms of PLC controller 21 and touch screen 31 are both conventional technologies. This utility model meets the requirements for protection of the object.

[0044] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A low-voltage unipolar electric field, characterized in that, It includes a low-voltage electric field (1) for preservation, and a main control circuit (2) and an input circuit (3) connected to the low-voltage electric field (1), wherein: The main control circuit (2) is located on site and includes a PLC controller (21), a relay module (23) and a temperature and humidity sensor (24). The PLC controller (21) receives the temperature and humidity information on site through the temperature and humidity sensor (24) and is connected to the low-voltage electric field (1) through the relay module (23) to control the low-voltage electric field (1) to release negative ions for preservation. The input circuit (3) is located in the background and includes a touch screen (31). The touch screen (31) is connected to the PLC controller (21) through a screen switch (32) and a preservation switch (33). Below the touch screen (31) are indicator lights I (34) and II (35) connected to the PLC controller (21).

2. The low-voltage monopole electric field as described in claim 1, characterized in that, The low-voltage electric field (1) includes at least a low-voltage pulsed electric field I (11) and a low-voltage pulsed electric field II (12), wherein the pulsed electric field intensity of the low-voltage pulsed electric field I (11) and the low-voltage pulsed electric field II (12) ranges from 20 to 1000 kV / m and the pulse frequency ranges from 50 to 200 Hz.

3. The low-voltage monopole electric field as described in claim 1, characterized in that, The main control circuit (2) also includes a power supply module (22), which is electrically connected to the low-voltage electric field (1), the PLC controller (21), the relay module (23), and the touch screen (31).

4. The low-voltage monopole electric field as described in claim 3, characterized in that, The low-voltage electric field (1) is a low-voltage pulse generator. The PLC controller (21) includes a high-voltage side electrode plate and a low-voltage side electrode. It releases negative ions for preservation by generating an arc discharge between the high-voltage side electrode plate and the low-voltage side electrode connected to the power module (22).

5. The low-voltage monopole electric field as described in claim 1, characterized in that, The PLC controller (21) is also connected to an atomizer, a heating wire, and a sterilization device; the PLC controller (21) adjusts the humidity, temperature, and sterilization status of the site through the atomizer, heating wire, and sterilization device.

6. The low-voltage monopole electric field as described in claim 1, characterized in that, The indicator lights I (34) and II (35) are used to indicate whether the food preservation is qualified or not on site; indicator light I (34) is a green indicator light and indicator light II (35) is a red indicator light.

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