Livestock breeding constant temperature control system

Abstract

The invention belongs to the field of livestock breeding, and discloses a livestock breeding constant temperature control system which comprises a temperature control device, a temperature detection device, a heating device and a protection device, the temperature control device is electrically connected with the environment temperature detection device and the heating device, and the temperature control device comprises a temperature adjusting module and a data display module. The heating device comprises a heating plate and a heating circuit, the protection device is a metal net shell and is detachably fixed on the ground surface, the temperature detection device and the heating device are detachably wrapped in the protection device, and meanwhile, a heating program is set according to a certain method to ensure that the heating plate reaches a constant temperature in a relatively open environment. Compared with a traditional constant temperature control device, the device has the advantages of temperature control, lightning stroke resistance, livestock electric shock prevention and the like, and is low in manufacturing cost, simple and easy to install.

Description

Technical Field:

[0001] The present invention belongs to the field of livestock breeding, and specifically relates to a constant temperature control system for livestock breeding. Background Art:

[0002] In recent years, the quantity and scale of livestock breeding have been continuously expanding. The temperature in the breeding shed has an important impact on the growth and health of livestock. Especially in the cold winter in the north, when the temperature in the breeding shed is too low, it is extremely fatal to livestock, especially the young of livestock. Therefore, a constant temperature device is needed to ensure that the breeding shed is at a suitable temperature. However, the existing constant temperature devices basically have the following problems:

[0003] 1. Due to the different specific environmental temperatures every day, it is necessary to adjust according to the environmental temperature. General constant temperature devices are commonly used in indoor enclosed spaces, and the external environmental temperature fluctuates little. While the common constant temperature products for the external use on the market have a single temperature control, without multiple heating temperature curves, resulting in inaccurate temperature control.

[0004] 2. It is not lightning-proof and is easily penetrated by lightning. Without a voltage detection feedback circuit, the livestock being heated is prone to electric shock, and it is not power-saving and is prone to long-term heating.

[0005] 3. At the same time, the temperature heating and environmental temperature detection devices are exposed in the breeding shed and are in direct contact with livestock, and are easily damaged by livestock.

[0006] 4. The constant temperature devices that are simple to install and use and inexpensive have overly simple functions, while the devices that can provide perfect constant temperature functions are overly expensive.

[0007] For example, as disclosed in the patent with the publication number CN113142080A, "A Constant Temperature Water Tank for Livestock Drinking" provides a constant temperature water tank including a water tank body with an open top, and also includes a controller, a first temperature control probe, a heating plate, and a solenoid valve. The first temperature control probe is used to detect the real-time water temperature in the water tank body and send the real-time water temperature to the controller. A water temperature threshold is preset in the controller, and the controller controls the heating plate or the drain valve to open according to the real-time water temperature. The constant temperature device of this invention is mainly applied to a relatively enclosed water tank, the external environment of the heating device is relatively stable, and the constant temperature curve is relatively single, and it cannot be applied to a semi-open breeding shed with large temperature changes.

[0008] For example, as disclosed in the patent with the publication number CN110250020A, "A Livestock Breeding Shed Based on a Fresh Air System and with Real-Time Deodorization" provides a breeding shed. The side wall partition inside and the water specific heat capacity inside the water and wind aggregation box of the livestock breeding shed based on the fresh air system and with real-time deodorization are large, which is convenient for constant temperature control of the temperature in summer and winter. This invention controls the temperature of a semi-open breeding shed based on the water and wind, but it cannot well guarantee the temperature in an environment that needs to be heated to maintain a constant temperature.

[0009] Therefore, how to provide a constant temperature control system for livestock breeding, through the relationship formula between environmental temperature and heating power, within a certain range of environmental temperature, accurately control the heating curve, that is, can detect the environmental temperature in the space of the breeding house at any time, ensure that the set constant temperature can be accurately reached, and achieve precise control of the temperature in the livestock breeding environment. Summary of the Invention:

[0010] The present invention aims at the deficiencies of the prior art and provides a constant temperature control system for livestock breeding.

[0011] Based on the principle and characteristics of metal heating and heat dissipation, on the basis of the original simple constant temperature heating device, the present invention guides constant temperature control with theory. At the same time, the temperature heating and environmental temperature detection devices are in the breeding house and will not be in direct contact with livestock, thus preventing damage by livestock. It can better achieve more precise temperature control of the constant temperature control system for livestock breeding and better carry out livestock breeding.

[0012] The technical solution adopted is as follows:

[0013] A constant temperature control system for livestock breeding includes a temperature control device, an environmental temperature detection device, a heating device and a protection device. The temperature control device is electrically connected to the environmental temperature detection device and the heating device respectively. The temperature control device includes a temperature adjustment module and a data display module. The heating device includes a heating plate and a heating circuit. The heating circuit is electrically connected to the heating plate, and the heating plate is heated through the heating circuit. The protection device is a metal shell, which is detachably fixed on the ground surface. The environmental temperature detection device and the heating device are detachably wrapped in the protection device. The heating device and the environmental temperature detection device are in one-to-one correspondence and are laid in the area that needs to be heated in the breeding house. The heating steps are as follows:

[0014] Step 1): Set the constant temperature T0 to which the heating plate needs to be heated through the temperature adjustment module;

[0015] Step 2): The environmental temperature detection device transmits the environmental temperature around the heating plate in the breeding house to the temperature control device every once in a while;

[0016] Step 3): The temperature control device sets the heating gear according to the current environmental temperature T1 and sets the heating power according to the heating gear;

[0017] Step 4): After the heating plate of the heating device is heated to the constant temperature, when the environmental temperature T1 is higher than the constant temperature by a certain range, the temperature control device stops power supply. When the environmental temperature T1 is not higher than the constant temperature by a certain range, continue to heat with the electric heating power reset in step 3) to maintain the constant temperature.

[0018] The specific period of time described in step 2) is 4 - 6 minutes.

[0019] When the ambient temperature is 13 - 35°C, in step 3), through the formula: The relationship between the heating electric power P and the specific heat capacity C of the heating plate, the density ρ of the heating plate, the volume V of the heating plate, the time t0 for the heating plate to be heated from the current temperature to the constant temperature, the current ambient temperature T1 and the set constant temperature T0 of the heating plate can be obtained, where K is the constant of electric power conversion loss.

[0020] When the ambient temperature is 13 - 35°C, the constant of electric power conversion loss K is 1.015 - 1.031.

[0021] When the ambient temperature exceeds 25°C, the temperature control device is set to the low heating gear, and the heating time t0 of the low heating gear is twice that of the medium heating gear; when the ambient temperature is 22 - 25°C, the temperature control device is set to the medium heating gear, and the heating time t0 of the medium heating gear is twice that of the high heating gear; when the ambient temperature is less than 22°C, the temperature control device is set to the high heating gear, and the time t0 for the heating plate to be heated from the ambient temperature to the constant temperature is 4 - 6 minutes.

[0022] The material of the heating plate is graphene, and the specific heat capacity C of the heating plate, the density ρ of the heating plate, and the volume V of the heating plate can be obtained. According to the gear set by the current temperature control device to determine the heating time t0, the constant temperature T0 set by the temperature adjustment module, and the current ambient temperature T1 detected by the ambient temperature detection device, through the formula The temperature control device sets the heating electric power P according to the current ambient temperature T1 and the constant temperature T0 set in step 1), and runs for the electric power P and the time t0 to heat the heating plate from the ambient temperature to the constant temperature.

[0023] Each time the temperature control device receives the ambient temperature signal from the ambient temperature detection device, the ambient temperature signal is an integer. When the ambient temperature changes by more than 1°C, the heating electric power P is readjusted. When the ambient temperature exceeds the ambient temperature required for the current heating gear, the heating gear is readjusted.

[0024] The certain range of the constant temperature in step 4) is 2 - 4°C; each time the temperature control device receives the ambient temperature signal from the ambient temperature detection device, the ambient temperature signal is an integer. When the ambient temperature changes by more than 1°C, according to the formula The reset electric heating power adjusts the electric heating power P by adjusting the value of T0 - T1 while keeping the value of t0 unchanged; when the ambient temperature exceeds the ambient temperature required for the current heating gear, the reset electric heating power adjusts the electric heating power P by adjusting the value of T0 - T1 and t0, and then conducts heating to maintain the constant temperature of the heating plate.

[0025] The heating circuit includes a feedback circuit that automatically detects the load, and the input voltage range of the heating circuit can be 65 - 260V.

[0026] The livestock breeding constant temperature control system disclosed by the present invention can be set in the breeding house space as needed, and several livestock breeding constant temperature control systems disclosed by the present invention can be added in one breeding house space according to the size of the breeding house space and the change of the local ambient temperature, realizing the effective control of the ambient temperature in the breeding house space; meanwhile, it also has the following beneficial effects:

[0027] 1. Through the relationship formula between the ambient temperature and the heating power, the heating curve can be accurately controlled within a certain ambient temperature range to ensure that the set constant temperature can be accurately reached;

[0028] 2. According to the heat dissipation formula of the heating plate, within a certain ambient temperature range, the heat dissipation speed of the heating plate can be accurately determined. Without a complex temperature detection device, the interval time can be determined to ensure that the temperature of the heating plate fluctuates within a certain range of the set constant temperature, and electricity can be saved;

[0029] 3. The heating plate and the ambient temperature detection device are wrapped with a protection device, which can effectively avoid damage by livestock.

[0030] 4. The current feedback circuit can effectively detect whether the heating circuit is normal and avoid electric shock to livestock.

[0031] 5. The wide circuit voltage can more effectively prevent the circuit from being broken down by lightning. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the solutions in the present application, the following will briefly introduce the drawings required for the description of the embodiments of the present application. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is the electrical connection diagram of a livestock breeding constant temperature control system described in the embodiments of the present invention.

[0034] Figure 2 It is the schematic diagram of the heating device and the ambient temperature detection device of a livestock breeding constant temperature control system described in the embodiments of the present invention.

[0035] The reference signs in the accompanying drawings are: 1 - protection device, 2 - ambient temperature detection device, 3 - heating plate. Detailed implementation manners:

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0037] Embodiment 1

[0038] A constant-temperature control system for livestock breeding disclosed in this Embodiment 1, when the ambient temperature range in the breeding house space is 20 °C, a constant-temperature control system for livestock breeding provided in a certain breeding house space of the present invention includes a temperature control device, an ambient temperature detection device 2, a heating device and a protection device 1. The temperature control device is electrically connected to the ambient temperature detection device and the heating device respectively. The temperature control device includes a temperature adjustment module and a data display module. The heating device includes a heating plate 3 and a heating circuit, and the heating circuit is electrically connected to the heating plate 3. The heating plate is heated through the heating circuit. The protection device is a metal shell, and the protection device is detachably fixed on the ground surface in the breeding house. The ambient temperature detection device 2 and the heating device are detachably wrapped by the protection device. An ambient temperature detection device 2 and a heating device are laid in a heated area of the breeding house. The heating steps are as follows:

[0039] Step 1): Set the constant temperature T0 to be heated by the heating plate 3 through the temperature adjustment module to 35 °C;

[0040] Step 2): The ambient temperature detection device 2 transmits the ambient temperature around the heating device in the breeding house to the temperature control device every once in a while;

[0041] Step 3): The temperature control device sets the heating gear according to the current ambient temperature in the breeding house space and sets the heating power according to the heating gear;

[0042] Step 4): After the heating plate 3 is heated to the constant temperature, when the ambient temperature T1 is higher than the constant temperature by a certain range, the temperature control device stops power supply. When the ambient temperature T1 is not higher than the constant temperature by a certain range, continue to heat with the electric heating power reset in Step 3) to maintain the constant temperature;

[0043] The "once in a while" mentioned in Step 2) is specifically 5 minutes.

[0044] When the ambient temperature is 20°C, in step 3), through the formula: The relationship between the heating electric power P, the specific heat capacity C of the heating plate, the density ρ of the heating plate, the volume V of the heating plate, the time t0 for the heating plate to heat from the current temperature to the constant temperature, the current ambient temperature T1, and the set constant temperature T0 of the heating plate can be obtained, where K is the constant of the electric power conversion loss.

[0045] When the ambient temperature is 20°C, the temperature control device is set to the high heating gear, and the time t0 for the heating plate 3 to heat from the ambient temperature to the constant temperature is 5 minutes; the constant K of the electric power conversion loss is 1.021.

[0046] The material of the heating plate 3 is graphene, and the specific heat capacity C of the heating plate can be obtained as 1400 J / (kg·°C), the density ρ of the heating plate is 2.2 g / cm 3 、the volume V of the heating plate is 3060 cm 3 , according to the gear set by the current temperature control device, the heating time t0 is determined to be 5 minutes, the constant temperature T0 set by the temperature adjustment module is 35°C, and the current ambient temperature T1 detected by the ambient temperature detection device 2 is 20°C. Through the formula The heating electric power P set by the temperature control device is taken as an integer of 480 W. With the electric heating power P and the running time of 5 minutes, theoretically, the heating plate 3 is heated from the ambient temperature of 20°C to the constant temperature of 35°C, and actually it is heated to 34.8°C.

[0047] The central temperature on the surface of the heating plate 3 has reached the constant temperature range. According to the temperature signal transmitted by the ambient temperature detection device 2, the currently actually detected ambient temperature T1 in the breeding shed is 30°C, and the temperature adjustment device adjusts the electric heating power P to continue heating. The certain range of the constant temperature in step 4) is 3°C; the temperature adjustment device sets the heating gear to the low heating gear. According to the formula The re-set electric heating power is to adjust the value of T0 - T1 to 4.8, take the integer as 5, and the value of t0 is 20. After adjusting the electric heating power P to 40 W and running the ambient temperature detection device in step 2) for 5 minutes, theoretically, the central temperature on the surface of the heating plate 3 is 36.05°C, and actually it is heated to 36°C, and the ambient temperature is actually detected as 32°C.

[0048] Every 5 minutes, the temperature control device adjusts the heating electric power according to the ambient temperature. When the ambient temperature T1 is higher than a certain range of the constant temperature, the temperature control device stops power supply. When the ambient temperature T1 is not higher than a certain range of the constant temperature, it continues to heat with the re-set electric heating power in step 3) to maintain the constant temperature.

[0049] The following table shows the actual measurement table of the central temperature on the surface of the heating plate 3 and the ambient temperature varying with the heating time when the initial ambient temperature in the embodiment of the present invention is 20°C, as shown in Table 1:

[0050]

[0051] Note: The parts not described in the following embodiments are the same as those described in the above specific embodiment 1. It can be seen from the technical solution disclosed in Embodiment 1 that when the temperature condition in the livestock breeding environment is relatively low, according to the formula in the above method of the present invention, the heating device in the livestock breeding constant temperature control system of the present invention can be adjusted to the high gear heating device state, so as to quickly heat up the livestock breeding environment. Several sets of the livestock breeding constant temperature control system of the present invention can be provided in the breeding house space of this embodiment.

[0052] Embodiment 2

[0053] A livestock breeding constant temperature control system disclosed in this Embodiment 2. When the ambient temperature range in the breeding house space is 25°C, a livestock breeding constant temperature control system of the present invention provided in a certain breeding house space includes a temperature control device, an ambient temperature detection device 2, a heating device and a protection device 1. The temperature control device is electrically connected to the ambient temperature detection device and the heating device respectively. The temperature control device includes a temperature adjustment module and a data display module. The heating device includes a heating plate 3 and a heating circuit. The heating circuit is electrically connected to the heating plate 3, and the heating plate is heated through the heating circuit. The protection device is a metal shell, and the protection device is detachably fixed on the ground surface in the breeding house. The ambient temperature detection device 2 and the heating device are detachably wrapped by the protection device. An ambient temperature detection device 2 and a heating device are laid in a heating required area of the breeding house. The heating steps are as follows:

[0054] Step 1): Set the constant temperature T0 to be heated by the heating plate 3 to 35°C through the temperature adjustment module;

[0055] Step 2): The ambient temperature detection device 2 transmits the ambient temperature around the heating device in the breeding house to the temperature control device every once in a while;

[0056] Step 3): The temperature control device sets the heating gear according to the current ambient temperature in the breeding house space and sets the heating power according to the heating gear;

[0057] Step 4): After the heating plate 3 is heated to the constant temperature, when the ambient temperature T1 is higher than the constant temperature within a certain range, the temperature control device stops power supply. When the ambient temperature T1 is not higher than the constant temperature within a certain range, continue to heat with the electric heating power reset in Step 3) to maintain the constant temperature;

[0058] The specific period of time described in step 2) is 5 minutes.

[0059] When the ambient temperature is 20°C, in step 3), through the formula: The relationship between the heating electric power P and the specific heat capacity C of the heating plate, the density ρ of the heating plate, the volume V of the heating plate, the time t0 for the heating plate to heat from the current temperature to the constant temperature, the current ambient temperature T1 and the set constant temperature T0 of the heating plate can be obtained, where K is the constant of electric heating power conversion loss.

[0060] When the ambient temperature is 25°C, the temperature control device is set to the high heating gear. The time t0 for the heating plate to heat from the ambient temperature to the constant temperature is 10 minutes; the constant of electric heating power conversion loss K is 1.021.

[0061] The material of the heating plate 3 is graphene. The specific heat capacity C of the heating plate can be obtained as 1400 J / (kg·°C), the density ρ of the heating plate is 2.2 g / cm 3 ³, the volume V of the heating plate is 3060 cm 3 ³. According to the gear set by the current temperature control device, the heating time t0 is determined to be 10 minutes, the constant temperature T0 set by the temperature adjustment module is 35°C, and the current ambient temperature T1 detected by the ambient temperature detection device 2 is 25°C. Through the formula The heating electric power P set by the temperature control device is taken as an integer of 160 W. With the electric heating power P and the running time of 10 minutes, theoretically, the heating plate 3 is heated from the ambient temperature to the constant temperature of 35°C. The actual central temperature on the surface of the heating plate is 34.5°C.

[0062] The central temperature on the surface of the heating plate has reached the constant temperature range. According to the temperature signal transmitted by the ambient temperature detection device, the current ambient temperature T1 is 32.5°C, and the temperature adjustment device adjusts the electric heating power P to continue heating. The certain range of the constant temperature in step 4) is 3°C; the temperature adjustment device sets the heating gear to the low heating gear. According to the formula The re-set electric heating power is to adjust the value of T0 - T1 to 3, while the value of t0 is 20. The electric heating power P is adjusted to 24 W. After running for 5 minutes with the ambient temperature detection device in step 2), the central temperature on the surface of the heating plate 3 is 35.25°C, the actual central temperature on the surface of the heating plate is 34.5°C, and the ambient temperature is 33°C.

[0063] Every 5 minutes, the temperature control device adjusts the heating electric power according to the ambient temperature. When the ambient temperature T1 is higher than a certain range of the constant temperature, the temperature control device stops power supply. When the ambient temperature T1 is not higher than a certain range of the constant temperature, it continues to heat with the re-set electric heating power in step 3) to maintain the constant temperature.

[0064] The following is the actual measurement table of the central temperature on the surface of the heating plate 3 and the ambient temperature varying with the heating time when the initial ambient temperature is 25°C in the embodiments of the present invention.

[0065] As shown in Table 2:

[0066]

[0067] Embodiment 3

[0068] A constant temperature control system for livestock breeding disclosed in this Embodiment 3. When the ambient temperature range in the breeding house space is 28°C, a constant temperature control system for livestock breeding provided in the present invention in a certain breeding house space includes a temperature control device, an ambient temperature detection device 2, a heating device, and a protection device 1. The temperature control device is electrically connected to the ambient temperature detection device and the heating device respectively. The temperature control device includes a temperature adjustment module and a data display module. The heating device includes a heating plate 3 and a heating circuit, and the heating circuit is electrically connected to the heating plate 3 to heat the heating plate through the heating circuit. The protection device is a metal shell, and the protection device is detachably fixed on the ground surface in the breeding house. The ambient temperature detection device 2 and the heating device are detachably wrapped in the protection device. An ambient temperature detection device 2 and a heating device are laid in a heated area of the breeding house. The heating steps are as follows:

[0069] Step 1): Set the constant temperature T0 to be heated by the heating plate 3 to 35°C through the temperature adjustment module;

[0070] Step 2): The ambient temperature detection device 2 transmits the ambient temperature around the heating device in the breeding house to the temperature control device every once in a while;

[0071] Step 3): The temperature control device sets the heating gear according to the current ambient temperature in the breeding house space and sets the heating power according to the heating gear;

[0072] Step 4): After the heating plate 3 is heated to the constant temperature, when the ambient temperature T1 is higher than the constant temperature by a certain range, the temperature control device stops power supply. When the ambient temperature T1 is not higher than the constant temperature by a certain range, continue to heat with the electric heating power reset in Step 3) to maintain the constant temperature;

[0073] The specific time in Step 2) is 5 minutes.

[0074] When the ambient temperature is 20°C, in Step 3), through the formula: The relationship between the heating electric power P and the specific heat capacity C of the heating plate, the density ρ of the heating plate, the volume V of the heating plate, the time t0 for the heating plate to be heated from the current temperature to the constant temperature, the current ambient temperature T1, and the set constant temperature T0 of the heating plate can be obtained, where K is the constant of electric heating power conversion loss.

[0075] When the ambient temperature is 28 °C, the temperature control device is set to the high heating gear. The time t0 for the heating plate 3 to heat from the ambient temperature to a constant temperature is 20 minutes; the electrothermal power conversion loss constant K is 1.021.

[0076] The material of the heating plate 3 is graphene. The specific heat capacity C of the heating plate can be obtained as 1400 J / (kg·°C), the density ρ of the heating plate is 2.2 g / cm 3 and the volume V of the heating plate is 3060 cm 3 , determining that the heating time t0 is 20 minutes according to the gear set by the current temperature control device, the constant temperature T0 set by the temperature adjustment module is 35 °C, and the current ambient temperature T1 detected by the ambient temperature detection device 2 is 28 °C. Through the formula The heating electric power P set by the temperature control device is taken as an integer of 56 W. With the electric heating power P and an operation time of 20 minutes, theoretically, the heating plate 3 is heated from the ambient temperature to a constant temperature of 35 °C, and the actual central temperature of the heating plate surface is 34.5 °C.

[0077] The central temperature of the heating plate 3 surface has reached the constant temperature range. According to the temperature signal transmitted by the ambient temperature detection device 2, the current ambient temperature T1 is 31.5 °C, and the temperature adjustment device adjusts the electric heating power P to continue heating. The certain range of the constant temperature in step 4) is 3 °C; the temperature adjustment device sets the heating gear to the low heating gear. According to the formula The re-set electric heating power is to adjust the value of T0 - T1 to 4, and the value of t0 is 20. After adjusting the electric heating power P to 32 W and running the ambient temperature detection device in step 2) for 5 minutes, theoretically, the central temperature of the heating plate surface is 35.5 °C, the actual central temperature of the heating plate surface is 35 °C, and the ambient temperature is 29.5 °C.

[0078] Every 5 minutes, the temperature control device adjusts the heating electric power according to the ambient temperature. When the ambient temperature T1 is higher than a certain range of the constant temperature, the temperature control device stops power supply. When the ambient temperature T1 is not higher than a certain range of the constant temperature, it continues to heat with the electric heating power re-set in step 3) to maintain the constant temperature.

[0079] The following is the actual measurement table of the central temperature of the heating plate surface and the ambient temperature changing with the heating time in the embodiment of the present invention when the initial ambient temperature is 25 °C, as shown in Table 3:

[0080]

Claims

1. A livestock breeding constant temperature control system, comprising a temperature control device, an ambient temperature detection device, a heating device and a protection device, wherein the temperature control device is electrically connected to the ambient temperature detection device and the heating device respectively, and is characterized in that, The temperature control device includes a temperature adjustment module and a data display module. The heating device includes a heating plate and a heating circuit. The heating circuit is electrically connected to the heating plate, and the heating plate is heated through the heating circuit. The protection device is a metal shell, which is detachably fixed to the ground surface. The ambient temperature detection device and the heating device are detachably wrapped in the protection device. The heating steps are as follows: Step 1): Set the constant temperature T0 to which the heating plate is to be heated through the temperature adjustment module; Step 2): The ambient temperature detection device transmits the ambient temperature around the heating plate in the breeding house to the temperature control device every once in a while; Step 3): The temperature control device sets the electric heating power according to the current ambient temperature T1; Step 4): After the heating plate of the heating device is heated to the constant temperature, when the ambient temperature T1 is higher than the constant temperature by a certain range, the temperature control device stops power supply. When the ambient temperature T1 is not higher than the constant temperature by a certain range, continue to heat with the electric heating power reset in Step 3) to maintain the constant temperature.

2. The livestock breeding constant temperature control system according to claim 1, characterized in that, The "once in a while" in Step 2) is specifically 4 - 6 minutes.

3. The livestock breeding constant temperature control system according to claim 1, characterized in that, In Step 3), the temperature control device sets the electric heating power according to the current ambient temperature T1, specifically: 1) When the ambient temperature is 13 - 35 °C, in step 3), through the formula: the relationship between the heating electric power P and the specific heat capacity C of the heating plate, the density ρ of the heating plate, the volume V of the heating plate, the time t0 for the heating plate to heat from the current temperature to the constant temperature, the current ambient temperature T1 and the set constant temperature T0 of the heating plate can be obtained, where K is the constant of the electric power conversion loss; 2) When the ambient temperature T1 exceeds 25°C, the temperature control device is set to the low heating gear, and the heating time t0 of the low heating gear is twice that of the medium heating gear; when the ambient temperature T1 is 22 - 25°C, the temperature control device is set to the medium heating gear, and the heating time t0 of the medium heating gear is twice that of the high heating gear; when the ambient temperature T1 is less than 22°C, the temperature control device is set to the high heating gear, and the time t0 for the heating plate to heat from the ambient temperature to the constant temperature is 4 - 6 minutes; 3) By the formula The temperature control device sets the heating electric power P according to the current ambient temperature T1 and the constant temperature T0 set in step 1).

4. The livestock breeding constant temperature control system according to claim 3, characterized in that, When the ambient temperature is 13 - 35°C, the electric heating power conversion loss constant K is 1.015 - 1.

031.

5. The livestock breeding constant temperature control system according to claim 1, wherein, The "certain range" of the constant temperature in Step 4) is specifically 2 - 4°C.

6. The livestock breeding constant temperature control system according to claim 1, characterized in that, The material of the heating plate is graphene.

7. The livestock breeding constant temperature control system according to claim 1, characterized in that, The heating circuit includes a feedback circuit for automatically detecting the load, and the input voltage range of the heating circuit can be 65 - 260V.

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