Intelligent lactating sow feeding system and method based on ingestion mutual feedback

Abstract

The invention discloses a lactating sow intelligent feeding system and method based on ingestion mutual feedback, the system comprises a background control unit and a plurality of automatic feeding devices, each automatic feeding device comprises an automatic feeding control module, an automatic discharging mechanism, a touch sensing module and a water level detection module, the automatic discharging mechanism is used for conveying pig feed into the feeding trough; the background control unit is used for sending a feeding instruction to the automatic feeding device; in the feeding process of each meal, the background control unit sends the total feeding amount of the meal to the automatic feeding device; the background control unit is further used for dynamically adjusting the total feeding amount of subsequent meals according to the relation between the total pig feed amount conveyed into the feeding trough by the automatic discharging mechanism in each meal and the total feeding amount. The system can track the actual ingestion and drinking conditions of the sows, automatically adjust the feeding amount according to an ingestion data feedback mechanism, dynamically respond to the actual feeding requirements of the sows, improve the feed utilization rate, reduce feed waste and promote cost reduction and efficiency improvement of a large-scale pig farm.

Description

Technical Field

[0001] The present invention relates to a breeding feeding device and method, and particularly to an intelligent feeding system and method for lactating sows based on feeding interaction feedback. Background Art

[0002] With the increasing emphasis on production efficiency in modern pig farming, especially in the nutritional requirements and feeding accuracy of lactating sows, traditional feeding cannot monitor their feeding and drinking conditions in real time, easily causing problems such as feed waste and low feed utilization rate.

[0003] Although some intelligent feeding devices for sows have been proposed and put into use at present, these devices can, to a certain extent, achieve precise feeding of the amount of feed for sows and help improve the basic management level of feeding. However, most intelligent feeding devices only rely on preset feeding amounts for feeding, lacking a real-time monitoring and feedback mechanism for the actual feeding situation of sows. The device cannot make corresponding adjustments to change the feeding amount in a timely manner according to the feedback. This static feeding method not only reduces the utilization efficiency of feed but also may lead to feed waste, increasing the breeding cost, and thus affecting the production performance and breeding benefits of sows. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned existing problems and provide an intelligent feeding system for lactating sows based on feeding interaction feedback. This feeding system can track the actual feeding and drinking conditions of sows, automatically adjust the feeding amount according to the feeding data feedback mechanism, dynamically respond to the actual feeding needs of sows, improve the feed utilization rate and reduce feed waste, and promote cost reduction and efficiency increase in large-scale pig farms.

[0005] Another purpose of the present invention is to provide an intelligent feeding method for lactating sows based on feeding interaction feedback.

[0006] To meet the purpose of the present invention, the following technical solutions are adopted:

[0007] An intelligent feeding system for lactating sows based on feeding interaction feedback includes a background control unit and a plurality of automatic feeding devices. Among them, the automatic feeding device includes an automatic feeding control module, an automatic feeding mechanism, a touch sensing module, and a water level detection module. The automatic feeding mechanism is used to convey pig food to the feeding trough;

[0008] The background control unit is used to send a feeding instruction to the automatic feeding device;

[0009] During the feeding process of each meal, the background control unit sends the total feeding amount of this meal to the automatic feeding device; the touch sensing module is used to detect the feeding demand signal of the sow, and the automatic feeding mechanism transports a fixed amount of pig food into the trough according to the valid feeding demand signal detected by the touch sensing module. Each time a valid feeding demand signal is obtained, and the total amount of pig food transported into the trough by the automatic feeding mechanism for each meal is not greater than the total feeding amount;

[0010] The water level detection module is used to detect the liquid level of the pig food in the trough. When the liquid level of the pig food in the trough reaches the set height, the automatic feeding mechanism stops feeding;

[0011] The background control unit is also used to dynamically adjust the total feeding amount of subsequent meals according to the relationship between the total amount of pig food transported into the trough by the automatic feeding mechanism and the total feeding amount in each meal.

[0012] Preferably, the automatic feeding mechanism includes a feed feeding mechanism and an automatic water feeding mechanism; the feed feeding mechanism includes a screw conveyor and a driving motor. The screw conveyor is arranged in the feeding pipe and is used to rotate and push the material to be transported along the pipe, and is fixedly connected to the output shaft of the driving motor. The driving motor is used to provide the driving force for rotation; the automatic water feeding mechanism includes a water source regulating device for controlling the on-off of the water source, and the water source regulating device includes an electromagnetic valve.

[0013] Preferably, the touch sensing module includes a touch rod and a touch signal transmitter. Among them, the touch rod is used to detect the feeding demand signal of the sow, and the touch signal transmitter is used to send the feeding demand signal to the automatic feeding device.

[0014] Further, the touch rod can move in the vertical direction, and the valid feeding demand signal includes a signal that the touch rod moves vertically by a distance greater than or equal to the set distance.

[0015] Preferably, the valid feeding demand signal is a signal that the touch rod moves when the touch sensing module is within the response window period and the time since the last valid feeding demand signal is generated exceeds the set time.

[0016] Preferably, during the process that the automatic feeding mechanism obtains a valid feeding demand signal and transports a fixed amount of pig food into the trough, if the water level detection module detects that the liquid level of the pig food in the trough reaches the set height, the automatic feeding mechanism ends the feeding action within the cycle of this valid feeding demand signal and waits for the next valid feeding demand signal.

[0017] Preferably, the water level detection module includes a water level sensor and a water level signal transmitter; among them, the water level sensor is used to detect whether the water level in the trough reaches the preset height; the water level signal transmitter is used to send the water level signal to the automatic feeding device.

[0018] Preferably, the background control unit is further configured to display the feedback on the feed intake and water intake of sows by all the automatic feeding devices; the automatic feeding device calculates the actual feed intake and water intake of sows by the rotation speed and rotation time of the driving motor and the opening time of the solenoid valve in the water source regulating device, and sends the data to the background control unit, and the background control unit displays the feedback on the feed intake and water intake of sows by the automatic feeding device and calculates the total feeding amount for the next meal.

[0019] An intelligent feeding method for lactating sows based on feeding interaction feedback implemented by using the above-mentioned intelligent feeding system for lactating sows based on feeding interaction feedback includes the following steps:

[0020] The background control unit sends a feeding instruction for a single meal to the automatic feeding device, and the feeding instruction includes the total feeding amount for this meal;

[0021] The automatic feeding device receives the feeding instruction and performs the feeding work; during the feeding process of each meal, the touch sensing module continuously detects the feeding demand signal of the sow, and the automatic feeding mechanism conveys a fixed amount of pig feed into the feed trough every time it obtains a valid feeding demand signal detected by the touch sensing module, and the total amount of pig feed conveyed into the feed trough by the automatic feeding mechanism for each meal is not greater than the total feeding amount; the water level detection module continuously detects the liquid level of the pig feed in the feed trough, and when the liquid level of the pig feed in the feed trough reaches the set height, the automatic feeding mechanism stops feeding;

[0022] The background control unit dynamically adjusts the total feeding amount for subsequent meals according to the relationship between the total amount of pig feed conveyed into the feed trough by the automatic feeding mechanism and the total feeding amount for each meal.

[0023] Preferably, the total feeding amount includes the feed amount and the water amount; the way for the background control unit to dynamically adjust the total feeding amount for subsequent meals is:

[0024] Calculate the feed amount fed per meal:

[0025]

[0026] In the formula, Q p is the feed amount fed per meal, ε represents the feed density correction coefficient, μ represents the proportion of the individual feeding and fattening adjustment increment or decrement, T is the number of days after parturition, N p is the normal feeding amount per meal, F p is the individual feeding and fattening feeding amount; S p is the feeding compensation for other factors;

[0027] Calculate the feed feeding amount per unit time of the feed feeding mechanism:

[0028] Q1 = π·r2 ·v·p·ρ1

[0029] Wherein, Q1 is the feed feeding amount per unit time; r is the diameter of the spiral conveying rod; v is the rotational speed of the driving motor; p is the pitch of the spiral conveying rod; ρ1 is the density of the feed;

[0030] Calculate the effective touch times required to complete the feeding of all feeds for a single meal:

[0031]

[0032] Wherein, N is the effective touch times required to complete the feeding of all feeds for a single meal; among which 4.5 is a parameter selected based on experimental data to help convert it into a reasonable touch times for single - meal feeding;

[0033] Calculate the feed amount to be fed for the next meal:

[0034]

[0035] Wherein, Q p+1 is the feed amount to be fed for the next meal; n is the effective touch times of this meal recorded; i is the feed amount increase - decrease coefficient;

[0036] Based on the feed amount to be fed for the next meal and the water - to - feed ratio of the feed amount and the water amount for each meal, calculate the water amount for the next meal, and calculate the total feeding amount for the next meal from the feed amount to be fed for the next meal and the water amount for the next meal.

[0037] The present invention has the following beneficial effects compared with the prior art:

[0038] 1. The feeding method of the present invention is based on the effective feeding demand signal of the sow detected by the touch - sensing module. Each time an effective feeding demand signal is obtained, a fixed amount of pig food is conveyed to the feeding trough, and the total amount of pig food conveyed to the feeding trough by the automatic feeding mechanism for each meal is not greater than the total feeding amount, so as to reduce feed waste.

[0039] 2. The present invention uses the water - level detection module to detect the total amount of pig food in the feeding trough. When the water - level height of the pig food in the feeding trough reaches the set height, the automatic feeding mechanism does not feed or supply water; thus, the total amount of pig food in the feeding trough can be controlled, and it can avoid the situation that non - real effective feeding demand signals lead to excessive conveyance of pig food. This signal is superimposed with the signal of the touch - sensing module, which can more truly reflect the real feeding demand of the sow and avoid waste.

[0040] 3. The present invention can also dynamically adjust the total feeding amount of sows. The background control unit dynamically adjusts the total feeding amount of subsequent meals according to the relationship between the total amount of pig food conveyed by the automatic feeding mechanism into the feeding trough in each meal and the total feeding amount, so as to dynamically respond to the actual feeding needs of sows, adjust the total feeding amount of sows, individually adjust the feeding curve of sows, and improve the utilization rate of feed. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic block diagram of a specific embodiment of an intelligent feeding system for lactating sows based on feeding interaction feedback of the present invention.

[0042] Figure 2 It is a data transmission connection diagram of an intelligent feeding system and method for lactating sows based on feeding interaction feedback of the present invention.

[0043] Figure 3 It is a schematic structural diagram of a specific embodiment of an intelligent feeding system for lactating sows based on feeding interaction feedback of the present invention.

[0044] Figure 4 It is a working flowchart of an intelligent feeding system and method for lactating sows based on feeding interaction feedback of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0046] Embodiment 1

[0047] Refer to Figures 1-4 , an intelligent feeding system for lactating sows based on feeding interaction feedback in this embodiment includes a background control unit 1 and a plurality of automatic feeding devices. Among them, the automatic feeding device includes an automatic feeding control module 2, an automatic feeding mechanism, a touch sensing module, and a water level detection module. The automatic feeding mechanism is used to convey pig food into the feeding trough. The automatic feeding control module 2 is used to communicate with the automatic feeding mechanism, the touch sensing module, and the water level detection module, and control the operation of the automatic feeding mechanism.

[0048] The background control unit is used to send a feeding instruction to the automatic feeding device. The background control unit has functions of receiving signals, information processing, and information display. For example, it can be a smart phone, a tablet computer, a laptop computer, etc. The feeding personnel can input the preset total feeding amount of this meal into the background control unit 1. When the preset feeding time arrives, the background control unit 1 sends the feeding instruction to each automatic feeding device according to the preset total feeding amount of this meal to start the feeding work.

[0049] The touch sensing module is used to detect the feeding demand signal of the sow. The touch sensing module includes a touch rod 4 and a touch signal transmitter. Among them, the touch rod 4 is used to detect the feeding demand signal of the sow, and the touch signal transmitter is used to send the feeding demand signal to the automatic feeding device. During the intelligent feeding process of the sow, the sow will be trained for the feeding demand behavior adaptively first. When the sow needs to eat, it will spontaneously touch the touch rod 4 and release the feeding demand signal.

[0050] The touch rod 4 can move in the vertical direction. When the sow touches the touch rod 4, the touch rod 4 will move upward, thereby generating a feeding demand signal. In order to filter out the false signals caused by accidental touches, the signals of the upward movement of the touch rod 4 are screened to select the effective feeding demand signals. The effective feeding demand signals include the signals that the touch rod 4 moves vertically by a distance greater than or equal to the set distance, that is, the effective feeding demand signal is triggered only when the touch rod 4 moves vertically by a distance greater than or equal to the set distance. At the same time, the above signals should occur within the response window period (i.e., the specified meal time period), and, after a valid feeding demand signal is generated, other touch signals occurring within the cycle of the valid feeding demand signal should also be regarded as false signals, that is, when the valid feeding demand signal is that the touch sensing module is within the response window period and the time from the last generation of the valid feeding demand signal exceeds the set time, the signal that the touch rod moves more than the set distance.

[0051] Specifically, if the moving distance of the touch rod 4 is small, there is a possibility of accidental touch caused by non-active feeding. Therefore, a reasonable moving distance is set. When the moving distance of the touch rod 4 is greater than or equal to this set value, it is considered an effective feeding demand signal. At the same time, after an effective touch, there may also be a problem of generating invalid signals due to continuous touches many times. Therefore, a touch interval time is set, that is, a certain time after the generation of an effective feeding demand signal. The touch signals generated within this touch interval time are regarded as invalid signals. For example, the touch interval time of the touch sensing module can be set to 10 seconds. During the response window period, if it is detected that there are multiple consecutive touches in a short time, the system will judge whether these touches occur within the set touch interval time. If the touch occurs within the touch interval time, all detected touch behaviors are determined to be invalid feeding demand signals; if the touch occurs outside the touch interval time, this touch is determined to be an effective feeding demand signal and enters a new touch interval time cycle. The advantage of adopting the above scheme is that it can avoid the pigs from easily having accidental touch behaviors and then generating interfering feeding demand signals.

[0052] According to the effective feeding demand signal detected by the touch induction module, each time the automatic feeding mechanism obtains an effective feeding demand signal, it conveys a fixed amount of pig food into the feeding trough. The pig food includes feed and water, and the total amount of pig food conveyed into the feeding trough by the automatic feeding mechanism for each meal is not greater than the total feeding amount.

[0053] The automatic feeding mechanism includes a feed feeding mechanism 3 and an automatic water feeding mechanism. The feed feeding mechanism 3 includes a hopper, a screw conveyor 3-1, and a driving motor 3-2. The screw conveyor 3-1 is arranged in the feeding pipeline and is used to rotate and push materials to be conveyed along the pipeline. It is fixedly connected to the output shaft of the driving motor 3-2, and the driving motor 3-2 is used to provide the driving force for rotation. The automatic water feeding mechanism includes a water source regulating device for controlling the on-off of the water source, and the water source regulating device includes a solenoid valve 5.

[0054] When the automatic feeding mechanism conveys a fixed amount of pig food into the feeding trough, it realizes the feeding of a fixed amount of feed by controlling the rotation speed and rotation time of the driving motor 3-2.

[0055] The feeding of a fixed amount of water is realized by controlling the opening and closing time of the solenoid valve 5 in the water source regulating device.

[0056] The background control unit 1 is also used to display the feedback on the feeding and drinking situation of sows of all automatic feeding devices; the automatic feeding mechanism calculates the actual feed intake and water intake of sows by controlling the rotation speed and rotation time of the driving motor 3-2 and the opening and closing time of the solenoid valve 5 in the water source regulating device, and sends the data to the background control unit 1. After processing the data, the background control unit 1 displays the data in the form of a chart on the display screen to more intuitively display the actual feeding and drinking situation of sows.

[0057] When the automatic feeding mechanism is working, after receiving an effective feeding demand signal from the touch induction module, it conveys a fixed amount of pig food into the feeding trough; during the feeding process of each meal, the sum of the amounts of pig food conveyed into the feeding trough multiple times is the total amount of pig food actually fed for this meal, and this total amount of pig food is not greater than the total feeding amount.

[0058] The water level detection module is used to detect the liquid level of pig food in the feeding trough. The water level detection module includes a water level sensor 6 and a water level signal transmitter; among them, the water level sensor 6 is used to detect whether the water level in the feeding trough reaches the preset height; the water level signal transmitter is used to send the water level signal to the automatic feeding device.

[0059] If the water level detection module detects that the liquid level of the pig food in the trough reaches the set height, the automatic feeding mechanism ends the feeding action within the current effective feeding demand signal cycle and waits for the next effective feeding demand signal. The purpose is to control the total amount of pig food in the trough, avoid overfeeding of pig food, and prevent the occurrence of false effective feeding demand signals that may lead to excessive conveyance of pig food. This signal is superimposed with the signal of the touch rod 4, which can more truly reflect the real feeding demand of sows and avoid waste.

[0060] The background control unit 1 is also used to dynamically adjust the feeding total amount of subsequent meals according to the relationship between the total amount of pig food conveyed by the automatic feeding mechanism into the trough and the feeding total amount in each meal, so as to be able to dynamically respond to the actual feeding demand of sows, individually adjust the feeding curve of sows, and improve the utilization rate of feed.

[0061] Embodiment 2

[0062] An intelligent feeding method for lactating sows based on feeding interaction feedback of the present invention includes the following steps:

[0063] The background control unit 1 sends a feeding instruction for a single meal to the automatic feeding device, and the feeding instruction includes the feeding total amount of this meal;

[0064] The automatic feeding device receives the feeding instruction and performs the feeding work; during the feeding process of each meal, the touch sensing module continuously detects the feeding demand signal of the sow. According to the effective feeding demand signal detected by the touch sensing module, each time an effective feeding demand signal is obtained, the automatic feeding mechanism controls the rotation speed and rotation time of the driving motor 3-2 and the opening and closing time of the solenoid valve 5 in the water source regulating device to convey a fixed amount of pig food into the trough, and the total amount of pig food conveyed by the automatic feeding mechanism into the trough in each meal does not exceed the feeding total amount; the water level detection module continuously detects the liquid level of the pig food in the trough. When the liquid level of the pig food in the trough reaches the set height, the water level signal transmitter sends a stop feeding signal to the automatic feeding mechanism, and the automatic feeding mechanism stops feeding;

[0065] The background control unit 1 dynamically adjusts the feeding total amount of subsequent meals according to the relationship between the total amount of pig food conveyed by the automatic feeding mechanism into the trough and the feeding total amount in each meal.

[0066] As an adjustment strategy, if the total amount of pig food for consecutive meals is equal to the total feeding amount, the background control unit 1 increases the total feeding amount for the next meal; if the total amount of pig food for consecutive meals is less than the total feeding amount and reaches a set ratio, the total feeding amount for the next meal is reduced. For example, if the total amount of pig food for three consecutive meals is equal to the total feeding amount, the background control unit 1 increases the total feeding amount for the next meal according to a set ratio. If the total amount of pig food for consecutive meals is less than the total feeding amount and not lower than the normal set value, the total feeding amount for the next meal remains unchanged; if it is less than the normal set value but not less than the minimum set value, the background control unit 1 reduces the total feeding amount for the next meal according to a set ratio; if it is less than the minimum set value, the background control unit 1 issues an alarm prompt to remind the management staff to conduct inspections and interventions. Specifically, if the total amount of pig food for three consecutive meals is equal to the preset total feeding amount, the background control unit 1 increases the total feeding amount for the next meal by 10%; if the total amount of pig food for three consecutive meals is less than the preset total feeding amount and not lower than 90% or more of the preset total feeding amount, the total feeding amount for the next meal remains unchanged; if the preset total amount of pig food for three consecutive meals is less than 90% but higher than 75% of the preset total feeding amount, the background control unit 1 reduces the total feeding amount for the next meal by 10%; if it is less than 75% of the preset total feeding amount, the background control unit 1 issues an alarm prompt to remind the management staff to conduct inspections and interventions.

[0067] In addition, the total feeding amount for subsequent meals can be calculated in the following way. The total feeding amount includes the feed amount and the water amount.

[0068] Calculate the feed amount fed per meal:

[0069]

[0070] In the formula, Q p is the feed amount fed per meal, ε represents the feed density correction coefficient, μ represents the proportion of the individual feeding and fattening adjustment increase or decrease, T is the number of days after parturition, N p is the normal amount to be fed per meal, F p is the individual feeding and fattening feeding amount; S p is the feeding compensation for other factors;

[0071] Calculate the feed feeding amount per unit time of the feed feeding mechanism:

[0072] Q1 = π·r 2 ·v·p·ρ1

[0073] In the formula, Q1 is the feed feeding amount per unit time; r is the diameter of the spiral conveyor rod; v is the rotational speed of the driving motor; p is the pitch of the spiral conveyor rod; ρ1 is the density of the feed;

[0074] Calculate the effective number of touches required to complete all feed discharging for a single meal:

[0075]

[0076] In the formula, N is the effective number of touches required to complete all feed discharging for a single meal; among which, 4.5 is a parameter selected based on experimental data to help convert it into a reasonable number of touches for single-meal feeding;

[0077] Calculate the feed amount for the next meal:

[0078]

[0079] In the formula, Q p+1 is the feed amount for the next meal; n is the effective number of touches recorded for this meal; i is the coefficient for increasing or decreasing the feed amount. Among them, according to the physiological state of the sow (gestation age, lactation weeks), the preset coefficient reference value i0 is matched, and based on the parameter and the preset weight factor, the coefficient i for increasing or decreasing the feed amount is dynamically calculated. For example, the initial value of i for lactating sows is set to 0.15. If the backfat thickness of sows in the late pregnancy is lower than the standard, then i increases by 0.05 to promote nutritional reserve.

[0080] Calculate the water amount for the next meal based on the feed amount for the next meal and the water-to-feed ratio of the feed amount and water amount for each meal.

[0081] Specifically, the relationship between the water amount for each meal and the feed amount for each meal is:

[0082]

[0083] Among them, Q s is the water amount for each meal; Q2 is the water amount of the automatic water supply mechanism per unit time, and its calculation method is:

[0084]

[0085] In the formula, Q2 is the water amount of the automatic water supply mechanism per unit time; α is the flow coefficient of the solenoid valve; β is the water-to-feed ratio optimization coefficient, 0 < β ≤ 1; η is the water pressure value of the water pipe; ρ2 is the density of the fluid.

[0086] The above is the preferred implementation mode of the present invention. However, the implementation mode of the present invention is not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An intelligent feeding system for lactating sows based on feeding interaction includes a background control unit and several automatic feeding devices, where, The automatic feeding device includes an automatic feeding control module, an automatic feeding mechanism, a touch sensing module, and a water level detection module. The automatic feeding mechanism is used to convey pig food into the feeding trough. It is characterized in that: The background control unit is used to send a feeding instruction to the automatic feeding device; During the feeding process of each meal, the background control unit sends the total feeding amount of this meal to the automatic feeding device. The touch sensing module is used to detect the feeding demand signal of the sow. According to the valid feeding demand signal detected by the touch sensing module, each time a valid feeding demand signal is obtained, a fixed amount of pig food is conveyed into the feeding trough, and the total amount of pig food conveyed into the feeding trough by the automatic feeding mechanism for each meal is not greater than the total feeding amount; The water level detection module is used to detect the liquid level of the pig food in the feeding trough. When the liquid level of the pig food in the feeding trough reaches the set height, the automatic feeding mechanism stops feeding; The background control unit is also used to dynamically adjust the total feeding amount of subsequent meals according to the relationship between the total amount of pig food conveyed into the feeding trough by the automatic feeding mechanism and the total feeding amount in each meal.

2. The intelligent feeding system for lactating sows based on foraging interaction as claimed in claim 1, wherein The automatic feeding mechanism includes a feed feeding mechanism and an automatic water feeding mechanism. The feed feeding mechanism includes a screw conveyor and a driving motor. The screw conveyor is arranged in the feeding pipe and is used to rotate and push the material to be conveyed along the pipe, and is fixedly connected to the output shaft of the driving motor. The driving motor is used to provide the driving force for rotation. The automatic water feeding mechanism includes a water source regulating device for controlling the on-off of the water source. The water source regulating device includes an electromagnetic valve.

3. The intelligent feeding system for lactating sows based on feeding interaction according to claim 1, characterized in that The touch sensing module includes a touch rod and a touch signal transmitter. Among them, the touch rod is used to detect the feeding demand signal of the sow, and the touch signal transmitter is used to send the feeding demand signal to the automatic feeding device.

4. The intelligent feeding system for lactating sows based on feeding interaction according to claim 3, characterized in that, The touch rod can move in the vertical direction. The valid feeding demand signal includes the signal that the touch rod moves vertically by a distance greater than or equal to the set distance.

5. The intelligent feeding system for lactating sows based on foraging interaction according to claim 4, characterized in that, The valid feeding demand signal is the signal that the touch rod moves when the touch sensing module is within the response window period and the time since the last valid feeding demand signal is generated exceeds the set time.

6. The intelligent feeding system for lactating sows based on foraging interaction according to claim 1 or 5, characterized in that, During the process that the automatic feeding mechanism obtains a valid feeding demand signal and conveys a fixed amount of pig food into the feeding trough, if the water level detection module detects that the liquid level of the pig food in the feeding trough reaches the set height, the automatic feeding mechanism ends the feeding action within the current valid feeding demand signal cycle and waits for the next valid feeding demand signal.

7. An intelligent feeding system for lactating sows based on feeding interaction according to claim 1, characterized in that, The water level detection module includes a water level sensor and a water level signal transmitter. Among them, the water level sensor is used to detect whether the water level in the feeding trough reaches the preset height. The water level signal transmitter is used to send the water level signal to the automatic feeding device.

8. An intelligent feeding system for lactating sows based on feeding interaction according to claim 2, characterized in that The background control unit is also used to display the feedback on the feeding and drinking situation of the sows of all automatic feeding devices. The automatic feeding device calculates the actual feeding amount and drinking amount of the sows through the rotation speed and rotation time of the driving motor and the opening and closing time of the electromagnetic valve in the water source regulating device, and sends the data to the background control unit. The background control unit displays the feedback on the feeding and drinking situation of the sows of the automatic feeding device and calculates the total feeding amount of the next meal.

9. An intelligent feeding method for lactating sows based on feeding interaction realized by using the intelligent feeding system for lactating sows based on feeding interaction according to any one of claims 1-8, characterized in that, Including the following steps: The background control unit sends a feeding instruction for a single meal to the automatic feeding device, and the feeding instruction includes the total feeding amount for this meal; The automatic feeding device receives the feeding instruction and performs the feeding work; during the feeding process of each meal, the touch sensing module continuously detects the feeding demand signal of the sow, and the automatic feeding mechanism conveys a fixed amount of pig food into the feed trough each time it obtains a valid feeding demand signal detected by the touch sensing module, and the total amount of pig food conveyed by the automatic feeding mechanism into the feed trough for each meal does not exceed the total feeding amount; the water level detection module continuously detects the liquid level of the pig food in the feed trough, and when the liquid level of the pig food in the feed trough reaches the set height, the automatic feeding mechanism stops feeding; The background control unit dynamically adjusts the total feeding amount of subsequent meals according to the relationship between the total amount of pig food conveyed by the automatic feeding mechanism into the feed trough in each meal and the total feeding amount.

10. The intelligent feeding method for lactating sows based on feeding interaction according to claim 9, characterized in that The total feeding amount includes the feed amount and the water amount; the way for the background control unit to dynamically adjust the total feeding amount of subsequent meals is: Calculate the feed amount fed in each meal: Where, Q p is the feed amount fed per meal, ε represents the feed density correction coefficient, μ represents the proportion of the individual feeding and fattening increase or decrease amount, T is the number of days after parturition, N p is the normal amount that should be fed per meal, F p is the individual feeding and fattening feeding amount; S p is the feeding compensation for other factors; Calculate the feed feeding amount per unit time of the feed feeding mechanism: Q1 = π·r 2 ·v·p·ρ1 In the formula, Q1 is the feed feeding amount per unit time; r is the diameter of the spiral conveyor rod; v is the rotation speed of the drive motor; p is the pitch of the spiral conveyor rod; ρ1 is the density of the feed; Calculate the effective touch times required to complete all feed feeding in a single meal: In the formula, N is the effective touch times required to complete all feed feeding in a single meal; Among them, 4.5 is a parameter selected based on experimental data to help convert it into a reasonable touch times for single meal feeding; Calculate the feed amount for the next meal: Where Q p+1 is the feed amount for the next meal; n is the number of effective touches recorded for this meal; i is the coefficient for increasing or decreasing the feed amount; Based on the feed amount for the next meal and the water-to-feed ratio of the feed amount and water amount in each meal, calculate the water amount for the next meal, and calculate the total feeding amount for the next meal from the feed amount for the next meal and the water amount for the next meal.

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