A dough mixing machine system

Abstract

The present invention discloses a dough mixer system, wherein the dough mixer hardware system includes an electromechanical device, a controller for controlling the operation of the electromechanical device, and a mobile communication terminal as a remote monitoring device, wherein the mobile communication terminal and the controller are connected to each other through a wireless network system; the electromechanical device includes a mixing barrel, a safety shield, a mixing mechanism, an AC motor, and a reduction transmission mechanism; the controller is electrically connected to the AC motor; and the control system includes control software of the controller and APP monitoring software of the mobile communication terminal. The advantages are: the entire dough mixer system has a novel structure, a highly integrated system, and integrated electromechanical communication. A smart phone is used as a remote monitoring terminal to implement remote real-time monitoring of the operation of the dough mixer through a wireless network; the dough mixer has a high degree of automation, the labor intensity is greatly reduced, and the per capita production efficiency is high; the dough mixing work efficiency and dough mixing quality are improved; and the staff is prevented from monitoring on site for a long time, which is beneficial to physical and mental health.

Description

Technical Field

[0001] The invention relates to a dough mixer, and in particular to a dough mixer system which can be monitored by a remote terminal. Background Art

[0002] As a pasta making machine, dough mixers are widely used in hotels, bakeries, cake shops, cafes, bars, teahouses, families and other occasions. The main function of dough mixers is to mix flour and water evenly. There are vacuum dough mixers and non-vacuum dough mixers. According to their structure, they can be divided into horizontal, vertical, single-axis, double-axis, half-axis, etc. But no matter what kind of structure, dough mixers are basically composed of a mixing cylinder, a spiral stirring hook, a transmission device, an electrical box, a machine base and other parts. The spiral stirring hook is driven by the transmission device to rotate in the mixing cylinder, and the mixing cylinder rotates at a constant speed driven by the transmission device. In this way, the flour in the mixing cylinder is constantly pushed, pulled, kneaded, pressed, fully stirred, and quickly mixed with water, so that the dry flour is evenly hydrated, the gluten is expanded, and it becomes a dough with certain elasticity, elasticity and uniform flow. Although various dough mixers on the market have diverse functions, wide applications and their own characteristics, their dough mixing control systems are all traditional electromechanical control types, without multi-process automatic operation functions and intelligent sensing functions. If staff are required to monitor on site during operation, they can promptly deal with situations such as mechanical pauses caused by changes in the dough mixer's operating conditions, dough overheating, and motor overload, which may cause the dough mixer to stop operating.

[0003] For example, the patent application number of the applicant is "CN201820532126.7" and the name is "Dough Mixer". The dough mixer includes a mixing barrel for holding flour, a turntable for supporting and fixing the mixing barrel and driving the mixing barrel to rotate, a dough-splitting rod and a spiral stirring hook for stirring the flour in the mixing barrel. The turntable and the spiral stirring hook are respectively connected to the same transmission shaft and reduction motor through a set of sprocket transmission devices to achieve synchronous rotation. However, from the perspective of automation, the dough mixer has the following technical defects:

[0004] 1) The dough mixer has a low degree of automation and the labor intensity of the staff is high. Since the dough mixing process usually requires multiple different steps, when the dough mixer is in use, the user must wait for the machine to complete a step and then re-enter the processing parameters to start the next step. This requires more manual monitoring and operation, resulting in low per capita production efficiency;

[0005] 2) When the staff temporarily leave, abnormal conditions may cause the machine to stop running, which cannot be handled in time, resulting in reduced dough kneading efficiency and even affecting dough kneading quality. Although the dough kneading machine has overload automatic shutdown and safety automatic shutdown functions, it does not have overload alarm and safety alarm functions. Therefore, the staff may not be able to detect abnormal conditions such as mechanical pause, dough overheating and motor overload in time due to watching over multiple machines.

[0006] 3) Lack of necessary intelligent functions and sensor flexibility. The current dough mixer does not have a temperature monitoring function, and the current overload detection threshold cannot be adjusted, which is not conducive to remote monitoring.

[0007] 4) The work site is noisy and the working environment is poor. The staff have to monitor on-site for a long time, which is not conducive to their physical and mental health. Summary of the invention

[0008] In order to solve the above-mentioned defects of the existing dough mixer system, the present invention provides a dough mixer control system that sets and monitors working parameters through a smartphone APP.

[0009] To achieve the above object, the solution adopted by the present invention is:

[0010] A dough mixer system includes a dough mixer hardware system, a wireless network system, and a control system; the dough mixer hardware system includes an electromechanical device, a controller for controlling the operation of the electromechanical device, and a mobile communication terminal as a remote monitoring device, and the mobile communication terminal and the controller are connected to each other through the wireless network system; the electromechanical device includes a mixing barrel for containing flour, a safety protection cover arranged on the mixing barrel, a stirring mechanism for mixing dough, an AC motor as a stirring power for mixing dough, and a speed reduction transmission mechanism connecting the stirring mechanism and the AC motor; the controller is electrically connected to the AC motor; and the system is characterized in that:

[0011] The control system includes control software of the controller and APP monitoring software of the mobile communication terminal;

[0012] The controller includes a control circuit, a sensor circuit, and a time / speed / start / stop control panel as a human-machine interaction, wherein the control circuit includes a power supply circuit for powering each circuit, a single-chip microcomputer control unit as a central control unit, a temperature detection circuit, a safety detection circuit as position safety, an overcurrent detection circuit for monitoring the load working current, a power drive circuit for driving the load operation, a solid-state relay timing protection circuit, a solid-state relay for controlling the load, and a communication transceiver as a communication connection; wherein the solid-state relay is arranged in the controller;

[0013] The time / speed / start / stop control panel includes a liquid crystal display circuit, a button circuit, a parameter adjustment circuit, a sound alarm circuit, and a status indication circuit. The liquid crystal display circuit is electrically connected to the output port of the single-chip control unit, the button circuit and the parameter adjustment circuit are both electrically connected to the input port of the single-chip control unit, and the sound alarm circuit and the status indication circuit are both electrically connected to the output port of the power drive circuit;

[0014] The sensor circuit includes a non-contact temperature sensor for the mixing barrel, a limit switch for detecting the opening and closing status of the safety cover, and a current sensor for detecting the current signal of the AC motor; the current sensor is arranged at the power supply terminal of the solid-state relay or the AC motor, and the power supply terminal passes through the current sensor; the limit switch is arranged on the electromechanical device and is linked to the safety cover, and the limit switch is closed when the safety cover is covered on the mixing barrel; the current sensor is electrically connected to the overcurrent detection circuit, and the overcurrent detection circuit is electrically connected to the input port of the single-chip microcomputer control unit; the limit switch is electrically connected to the oversafety detection circuit, and the safety detection circuit is electrically connected to the single-chip microcomputer control unit. The input port of the single-chip control unit is electrically connected; the non-contact temperature sensor is electrically connected to the temperature detection circuit, the temperature detection circuit is electrically connected to the input port of the single-chip control unit, the output port of the single-chip control unit is electrically connected to the input end of the power drive circuit, the output port of the power drive circuit is electrically connected to the input end of the solid-state relay, the output end of the solid-state relay timing protection circuit is electrically connected to the input end of the solid-state relay, and the output end of the solid-state relay is electrically connected to the AC motor; the communication port of the single-chip control unit is electrically connected to the communication transceiver, and the communication transceiver is connected to the wireless signal of the mobile communication terminal through a wireless network.

[0015] The aforementioned mobile communication terminal is a smart phone, and the control software of the controller includes the following control steps: step 1, initializing the single-chip microcomputer control unit, and initializing the internal program of the single-chip microcomputer control unit after the system is started; step 2, receiving the parameter instruction of the smart phone, and first receiving the parameter instruction sent by the smart phone after initialization; step 3, processing the parameter instruction, and performing the corresponding processing program according to the received parameter instruction; step 4, controlling the operation of the dough mixer according to the user parameters, and the single-chip microcomputer control unit outputs the control signal to the power drive circuit through the output port of the single-chip microcomputer control unit according to the various user parameters received, so as to realize the operation control of the AC motor; and repeating step 2;

[0016] Step 5, receiving the panel parameter command. After receiving the parameter command sent by the smart phone and executing it, if there is a command input on the time / speed / start / stop control panel of the controller, then receiving the parameter command input on the time / speed / start / stop control panel, and then repeating the process from step 3 to step 5;

[0017] Step 6: Detect sensor input. The single-chip control unit opens the input terminal corresponding to each sensor, and sequentially obtains temperature data of the non-contact temperature sensor from the temperature detection circuit, obtains switch state data of the limit switch from the safety detection circuit, and obtains current data of the current sensor from the overcurrent detection circuit;

[0018] Step 7, processing sensor data, processing each sensor data in step 6; then repeating the process of step 4;

[0019] Step 8, collecting and displaying the dough mixer state, the single-chip microcomputer control unit collects various operating state parameters of the dough mixer, and outputs each operating state parameter to the liquid crystal display circuit for display;

[0020] Step nine, reporting the dough mixer status to the smart phone, the single chip control unit sends the various operating status parameters of the dough mixer in step eight to the communication transceiver through the communication port, and then the communication transceiver sends them to the smart phone for display via the wireless network; and repeat step eight.

[0021] As an illustration of the above-mentioned scheme, in the above-mentioned technical scheme, the APP monitoring software of the above-mentioned smart phone includes the following functional modules: wireless communication module, information transceiver processing module, upper and lower computer synchronization module, monitoring module, working parameter real-time monitoring module, process parameter editing module, process parameter storage module, and abnormal alarm module; wherein, the wireless communication module is bidirectionally associated with the information transceiver processing module, the information transceiver processing module is bidirectionally associated with the monitoring module, the information transceiver processing module is bidirectionally associated with the upper and lower computer synchronization module, and the monitoring module is unidirectionally associated with the upper and lower computer synchronization module; the monitoring module is unidirectionally associated with the working parameter real-time monitoring module, and the monitoring module is unidirectionally associated with the abnormal alarm module; the monitoring module is unidirectionally associated with the process parameter storage module, the process parameter storage module is bidirectionally associated with the process parameter editing module, and the process parameter editing module is unidirectionally associated with the monitoring module.

[0022] As an illustration of the above scheme, in the above technical scheme, the above power supply circuit includes a same-core power plug of an external 5V DC power supply and a 3.3V voltage-stabilized power supply integrated circuit, the same-core power plug is electrically connected to the 3.3V voltage-stabilized power supply integrated circuit, a filter electrolytic capacitor and a high-frequency filter capacitor are arranged between the same-core power plug and the 3.3V voltage-stabilized power supply integrated circuit, and a filter electrolytic capacitor and a high-frequency filter capacitor are also arranged at the output end of the 3.3V voltage-stabilized power supply integrated circuit; the input end of the 3.3V voltage-stabilized power supply integrated circuit serves as the positive power supply of the system power supply;

[0023] The single-chip control unit includes a 51 series single-chip microcomputer of model STC90C516RC, pins 40 and 20 of the single-chip microcomputer are respectively connected to the positive and negative electrodes of the working power supply, a crystal oscillator is connected between pins 18 and 19 of the single-chip microcomputer, and pin 9 of the single-chip microcomputer is connected to a power-on reset circuit composed of a resistor and a capacitor; pins 32 to 39 of the single-chip microcomputer are all connected to pull-up resistors, and the pull-up resistors are row resistors;

[0024] The temperature detection circuit is arranged in the controller. The temperature detection circuit is a temperature detection processing circuit with an IIC communication function. The temperature detection processing circuit integrates a non-contact temperature sensor. The positive power terminal of the temperature detection processing circuit is connected to the positive pole of the 3.3V power supply, the negative power terminal is grounded, and the IIC communication pin is respectively connected to pin 14 and pin 15 of the single-chip computer;

[0025] The safety detection circuit includes a pull-up resistor, one end of which is connected to the positive electrode of the power supply, and the other end is connected to the input pin 29 of the single-chip microcomputer; one end of the limit switch is grounded, and the other end of the limit switch is connected to the connection between the pull-up resistor and the pin 29 of the single-chip microcomputer;

[0026] As an illustration of the above scheme, in the above technical scheme, the above overcurrent detection circuit includes a signal conversion circuit unit that rectifies the AC current signal and converts it into a voltage signal, and a current signal amplifying circuit that sorts the current signal after converting the voltage signal, wherein the number of signal conversion circuit units corresponds to the number of power phases of the AC motor power supply, and the structure of each phase signal conversion circuit unit is the same, and each phase signal conversion circuit unit includes a current sensor input socket, a rectifier bridge, an isolation diode, and a conversion resistor that converts the current signal into a voltage signal, the current sensor input socket is connected to the input end of the rectifier bridge, the conversion resistor is connected between the positive and negative poles of the output end of the rectifier bridge, and the positive pole of the isolation diode is connected to the positive pole of the output end of the rectifier bridge; the current signal amplifying circuit includes an input resistor, a voltage divider resistor, a filter Wave capacitor, operational amplifier, 3-pin multi-turn tight precision potentiometer, anti-jitter capacitor, output pull-up resistor; wherein, the input resistor and the voltage divider resistor are connected in series to form a voltage divider, the input end of the input resistor is simultaneously connected to the negative electrode of the isolation diode of each phase signal conversion circuit unit, one end of the voltage divider resistor is grounded, the input resistor and the voltage divider resistor are connected in series at the inverting input end of the operational amplifier, and the filter capacitor is connected to the input resistor and the voltage divider resistor in series after being grounded; the two ends of the 3-pin multi-turn tight precision potentiometer are connected between the positive and negative ends of the power supply, the output end of the 3-pin multi-turn tight precision potentiometer is connected to the in-phase input end of the operational amplifier, and the anti-jitter capacitor is connected to the output end of the 3-pin multi-turn tight precision potentiometer after being grounded; the output end of the operational amplifier is connected to pin 17 of the microcontroller and is connected to the positive pole of the power supply through the output pull-up resistor.

[0027] As an illustration of the above scheme, in the above technical scheme, the above power driving circuit includes a power driving integrated circuit of model ULN2803A, wherein the output pin 18 of the power driving integrated circuit is connected to the input pin 2, the output pin 18 is connected to the positive electrode of the power supply through a resistor, the input pins 5 to 8 are connected to the positive electrode of the power supply through their own corresponding pull-up resistors, the input pin 5 is connected to the output pin 1 of the single-chip computer, the input pin 6 is connected to the output pin 3 of the single-chip computer, the input pin 7 is connected to the output pin 5 of the single-chip computer, and the input pin 8 is connected to the output pin 30 of the single-chip computer;

[0028] The solid-state relay timing protection circuit includes a clock generation circuit, a 2-way timing trigger circuit, and a logic processing circuit for processing the single-chip microcomputer output AC motor control signal, wherein the clock generation circuit is mainly composed of a 555 timer integrated circuit, pin 8 of the 555 timer integrated circuit is connected to the power supply, pin 1 is grounded, pin 2 is connected to pin 6 and then grounded through a capacitor, pin 7 is connected to pin 6 through a resistor, pin 7 is connected to the positive pole of the power supply through a resistor, pin 5 is grounded through a capacitor, and pin 4 is connected to pin 18 of the power driver integrated circuit;

[0029] The two timing trigger circuits are both composed of a dual master-slave D-type trigger of model SN7474N. The first timing trigger circuit controls the AC motor to run slowly, and the second timing trigger circuit controls the AC motor to run quickly. In the first timing trigger circuit, the corresponding dual master-slave D-type trigger pins 14, 1, and 13 are all connected to the positive pole of the power supply, pin 7 is grounded, input pin 2 is connected to the output pin 4 of the single-chip microcomputer, output pin 5 is connected to the input pin 12, pin 3 and pin 11 are both connected to the output pin 3 of the 555 timer integrated circuit, and output pin 8 is connected to the input pin 3 of the power driver integrated circuit; in the second timing trigger circuit, the corresponding dual master-slave D-type trigger pins 14, 1, and 13 are all connected to the positive pole of the power supply, pin 7 is grounded, input pin 2 is connected to the output pin 6 of the single-chip microcomputer, output pin 5 is connected to the input pin 12, pin 3 and pin 11 are both connected to the output pin 3 of the 555 timer integrated circuit, and output pin 8 is connected to the input pin 4 of the power driver integrated circuit;

[0030] The logic processing circuit is composed of two NAND gate integrated circuits of model SN7400N; in the first NAND gate integrated circuit, pin 14 is connected to the positive pole of the power supply, pin 7 is grounded, input pin 1, pin 2 and pin 13 are all connected to the output pin 6 of the single-chip microcomputer, input pin 4, pin 5 and pin 12 are all connected to the output pin 4 of the single-chip microcomputer, output pin 6 is connected to input pin 10, output pin 3 is connected to input pin 9 and is also respectively connected to pin 4 and pin 10 of the dual master-slave D-type trigger corresponding to the second timing trigger circuit, and output pin 6 is respectively connected to pin 4 and pin 10 of the dual master-slave D-type trigger corresponding to the first timing trigger circuit; in the second NAND gate integrated circuit, pin 14 is connected to the positive pole of the power supply, pin 7 is grounded, Input terminal pins 1 and 2 are both connected to output terminal pin 2 of the single-chip microcomputer, input terminal pin 4 is connected to output terminal pin 8 of the first NAND gate integrated circuit, input terminal pin 5 is connected to output terminal pin 11 of the first NAND gate integrated circuit, input terminal pins 9 and 10 are both connected to output terminal pin 6, input terminal pin 12 is connected to output terminal pin 8, input terminal pin 13 is connected to output terminal pin 3, and output terminal pin 11 is connected to the input terminal of the power driving integrated circuit through a signal delay circuit. The signal delay circuit is composed of a charging resistor and a charging electrolytic capacitor connected in series, the negative pole of the charging electrolytic capacitor is grounded, the charging resistor is connected to the output terminal pin 11, and the series connection point of the charging resistor and the charging electrolytic capacitor is connected to the input terminal pin 1 of the power driving integrated circuit.

[0031] As an illustration of the above scheme, in the above technical scheme, a level conversion circuit is provided between the above communication transceiver and the single-chip microcomputer, and the level conversion circuit mainly includes a 4-port communication plug, a 3-pin communication power selection jumper, and two NPN transistors; wherein, the C pole of one NPN transistor is connected to pin 4 of the 4-port communication plug, and is connected to the output end of the 3.3V voltage-stabilized power supply integrated circuit through a pull-up resistor, the E pole of the NPN transistor is connected to pin 11 of the single-chip microcomputer, and the B pole of the NPN transistor is connected to the input end of the 3.3V voltage-stabilized power supply integrated circuit through a pull-up resistor; the C pole of the other NPN transistor is connected to pin 10 of the single-chip microcomputer, and is connected to the input end of the 3.3V voltage-stabilized power supply integrated circuit through a pull-up resistor. The E pole of the NPN transistor is connected to the pin 3 of the 4-port communication plug, and the B pole of the NPN transistor is connected to the output end of the 3.3V voltage-stabilized power integrated circuit through a pull-up resistor; the pin 2 of the 4-port communication plug is connected to the power ground wire, the pin 1 of the 4-port communication plug is connected to the pin 2 of the 3-pin communication power selection jumper, the pin 1 of the 3-pin communication power selection jumper is connected to the output end of the 3.3V voltage-stabilized power integrated circuit, and the pin 3 of the 3-pin communication power selection jumper is connected to the input end of the 3.3V voltage-stabilized power integrated circuit, and the 3-pin communication power selection jumper is provided with a plug-in short-circuit sheet for connecting the adjacent pins of the pin 2 of the 3-pin communication power selection jumper; the communication transceiver is electrically connected to the level conversion circuit through the 4-port communication plug.

[0032] As an illustration of the above scheme, in the above technical scheme, the above liquid crystal display circuit includes a brightness adjustment potentiometer and a liquid crystal display module of model 12864, and the pins of the liquid crystal display module are connected as follows: the parallel display data pins 6 to 14 of the liquid crystal display module are respectively connected to the P0 parallel output ports P0.0 to P0.7 of the single-chip microcomputer, pins 1 and 20 are grounded, pins 2 and 19 are connected to the positive pole of the power supply, pins 2 and 19, and pin 3 is connected to the output pin of the brightness adjustment potentiometer, and the two ends of the brightness adjustment potentiometer are respectively connected to pin 18 of the liquid crystal display module and the positive pole of the power supply;

[0033] The button circuit includes two reset button switches for inputting signals for controlling the running speed of the AC motor, namely a fast button and a slow button. One end of the slow button is grounded, and the other end is connected to the positive electrode of the power supply through a pull-up resistor and connected to the output pin 7 of the single-chip computer. One end of the fast button is grounded, and the other end is connected to the positive electrode of the power supply through a pull-up resistor and connected to the output pin 8 of the single-chip computer.

[0034] The parameter adjustment circuit includes a rotary encoder of model FQ14-5Z, wherein pins 1 and 3 of the rotary encoder are both grounded, input pin 2 is connected to output pin 12 of the single-chip microcomputer and connected to the positive pole of the power supply through a pull-up resistor, pin 4 is connected to output pin 16 of the single-chip microcomputer, and pin 5 is respectively connected to output pin 13 of the single-chip microcomputer;

[0035] The sound alarm circuit is an active buzzer, one end of the active buzzer is connected to the power supply, and the other end is connected to the output pin 11 of the power drive integrated circuit;

[0036] The status indication circuit includes four light-emitting diodes, one end of each light-emitting diode is connected to the positive electrode of the power supply through a current-limiting resistor in series, and the four light-emitting diodes respectively indicate four states of the AC motor, namely, a main operation state indicator light, a slow operation state indicator light, a fast operation state indicator light, and an overload operation state indicator light; the other end of the light-emitting diode corresponding to the main operation state indicator light is connected to the output pin 14 of the power driver integrated circuit, the other end of the light-emitting diode corresponding to the slow operation state indicator light is connected to the output pin 13 of the power driver integrated circuit, and the other end of the light-emitting diode corresponding to the fast operation state indicator light is connected to the output pin 12 of the power driver integrated circuit; the other end of the light-emitting diode corresponding to the overload operation state indicator light is connected to the output pin 28 of the single-chip computer.

[0037] As an illustration of the above scheme, in the above technical scheme, the electrical connection between the above control circuit and the time / speed / start / stop control panel is connected by a connector, and a 4-pin socket and a 26-pin socket are provided on the periphery of the single-chip microcomputer. The 4-pin socket is used to connect to the non-contact temperature sensor, and the 26-pin socket is used to connect to the time / speed / start / stop control panel; pin 1 of the 4-pin socket is connected to the positive pole of the 3.3V power supply, pin 2 of the 4-pin socket is grounded, pin 3 of the 4-pin socket is connected to pin 14 of the single-chip microcomputer, and pin 4 of the 4-pin socket is connected to pin 15 of the single-chip microcomputer; among the 26 pins of the 26-pin socket, pin 1 is connected to the positive pole of the power supply, pin 2 is grounded, and the other pins are respectively connected to the corresponding pins of the single-chip microcomputer and the output pins of the power drive integrated circuit.

[0038] As the working principle of the above scheme: the working parameters are set and remotely monitored through the smartphone APP. After the dough mixer control system is started, the single-chip microcomputer completes various initialization actions. The mobile communication terminal connects to the single-chip microcomputer (MCU) in the controller via wireless WiFi. After the single-chip microcomputer receives the start-up command sent by the smartphone (mobile communication terminal) or the start-up command sent on the control panel, it first checks whether the safety protection cover of the mixing barrel is closed and whether the emergency stop switch is closed normally. If normal, the main relay and high-speed / low-speed solid-state relay are turned on to start the machine to operate normally; if abnormal, it is displayed through the display circuit, and the prompt information is on the LCD screen of the LCD display module. At the same time, data is sent to the mobile communication terminal via wireless WiFi and the prompt information is displayed.

[0039] During the normal operation of the dough mixer, if the safety cover of the mixing barrel is accidentally opened or the emergency stop switch is pressed, the microcontroller disconnects the main solid-state relay and the high-speed / low-speed solid-state relay, the machine stops operating, and the breakpoint data is saved until the safety cover of the mixing barrel is closed again and the emergency stop switch is closed normally. The microcontroller receives the start command sent from the mobile communication terminal or the control panel again, then the main solid-state relay and the high-speed / low-speed solid-state relay are connected, and the machine continues to operate normally from the breakpoint.

[0040] The single-chip microcomputer counts down according to the time set by the user, and displays it synchronously on the mobile communication terminal and the LCD screen of the LCD display module. The working parameters can be set by the user through the mobile communication terminal or the control panel before starting the machine. The parameter changes must be made when the machine is in the pause state. The temperature detection circuit detects and collects the flour mixing temperature, and displays it in real time on the LCD screen of the mobile communication terminal and the LCD display module. Once the temperature exceeds the set value, an alarm is issued. The overcurrent detection circuit detects in real time whether the peak value of the power supply current of each phase of the AC motor exceeds the set value. When the overcurrent time exceeds the time set by the program, the active buzzer in the overcurrent detection circuit issues an alarm and disconnects the main solid-state relay and the high-speed / low-speed solid-state relay. Users can also set multi-process working parameters through the smartphone APP, and remotely start the dough mixer to automatically complete the processing of multiple processes.

[0041] From the above, it can be seen that the present invention has the following advantages: the system is highly integrated, and electromechanical communication is integrated. Through the organic combination of software and hardware, commonly used smart phones are integrated as mobile monitoring terminals. The entire dough mixer system has a novel structure and fully utilizes smart phones as remote monitoring terminals combined with wireless networks to implement remote real-time monitoring of the operation of the dough mixer, thereby solving various problems faced in the prior art.

[0042] 1) The dough mixer has a high degree of automation, which greatly reduces the labor intensity of the staff and solves the inconvenience of switching between multiple processes in the dough mixing process. By making full use of smartphones, users do not have to wait until one process is completed before entering the processing parameters to start the next process. They can directly enter the operating parameters of multiple processes, which greatly reduces manual monitoring and operation and greatly improves per capita production efficiency;

[0043] 2) Even if the staff is away temporarily, they can still monitor the current operation of the dough mixer through their smartphones. When an abnormal situation occurs and the operation stops, it can be handled in time to ensure the efficiency and quality of dough mixing. The dough mixer not only has the automatic overload shutdown and safety automatic shutdown functions, but also has overload alarm and safety alarm functions. Therefore, when the staff is watching over multiple machines, they can also detect abnormal situations such as mechanical pauses, dough overheating and motor overload in time;

[0044] 3) It uses intelligent functions, temperature sensors and current sensors to monitor the dough temperature and the working current of the AC motor at any time. The current overload detection parameters are easy to adjust, and the remote monitoring content is richer;

[0045] 4) During the monitoring process, the staff can stay away from the work site, avoiding long-term on-site monitoring and avoiding the impact of loud noise and poor working environment at the work site, which is beneficial to physical and mental health. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a hardware system architecture diagram of the dough mixer of the present invention.

[0047] Figure 2 This is the control step diagram of the control software.

[0048] Figure 3 This is the architecture diagram of the APP monitoring software for mobile communication terminals.

[0049] Figure 4 This is a circuit diagram of the power supply circuit.

[0050] Figure 5 This is the circuit diagram of the microcontroller control unit (including temperature detection circuit and safety detection circuit).

[0051] Figure 6 This is the circuit diagram of the overcurrent detection circuit.

[0052] Figure 7 This is the circuit diagram of the power drive circuit.

[0053] Figure 8 This is the circuit diagram of the solid-state relay timing protection circuit.

[0054] Fig. 9 This is a circuit diagram of a logic processing circuit.

[0055] Fig.10 This is the circuit diagram of the level conversion circuit.

[0056] Fig.11 This is the circuit diagram of the liquid crystal display circuit.

[0057] Fig.12 Circuit diagram of the parameter adjustment circuit.

[0058] Fig.13 This is the circuit diagram of the sound alarm circuit and status indication circuit.

[0059] Description of main figures: 22—hardware system, 23—wireless network system, 24—mobile communication terminal; 32—wireless communication module, 33—information transceiver processing module, 34—upper and lower computer synchronization module, 35—monitoring module, 36—working parameter real-time monitoring module, 37—process parameter editing module, 38—process parameter storage module, 39—abnormal alarm module; 50—single chip microcomputer control unit, 51—sensor circuit, 52—time / speed / start / stop control panel, 53—power supply circuit, 55—temperature detection circuit, 56—safety detection circuit, 57—overcurrent detection circuit, 58—power Driving circuit, 59—solid-state relay timing protection circuit, 60—solid-state relay, 61—communication transceiver, 64—liquid crystal display circuit, 65—button circuit, 66—parameter adjustment circuit, 67—sound alarm circuit, 68—status indication circuit, 70—non-contact temperature sensor, 71—limit switch, 72—current sensor, 73—signal conversion circuit unit, 74—current signal amplification circuit, 76—clock generation circuit, 77—timing trigger circuit, 78—logic processing circuit, 79—level conversion circuit, 80—signal delay circuit, 81—power-on reset circuit, 82—AC motor. DETAILED DESCRIPTION

[0060] The present invention and its beneficial technical effects are further described in detail below in conjunction with the accompanying drawings and preferred embodiments. The suffixes A, B, C, and D of the integrated circuit numbers appearing in the accompanying drawings represent the functional unit circuits of the integrated circuits. For the convenience of expression, network marks are used instead of electrical connection lines in some places in the circuit diagrams in the accompanying drawings. The dough mixer structure of the electromechanical device of the hardware system is prior art, and reference can be made to the utility model patent with the patent application number "CN201820532126.7" and the name "Dough Mixer" applied for by the applicant.

[0061] See also Figure 1A dough mixer system includes a dough mixer hardware system 22, a wireless network system 23, and a control system; the dough mixer hardware system 22 includes an electromechanical device, a controller for controlling the operation of the electromechanical device, and a mobile communication terminal 24 as a remote monitoring device, and the mobile communication terminal 24 and the controller are connected to each other through the wireless network system 23; the electromechanical device includes a mixing barrel for containing flour, a safety shield arranged on the mixing barrel, a mixing mechanism for mixing dough, an AC motor 82 as a mixing power for mixing dough, and a reduction transmission mechanism connecting the mixing mechanism and the AC motor 82; the controller is electrically connected to the AC motor 82; its characteristics are:

[0062] The aforementioned control system includes the control software of the controller and the APP monitoring software of the mobile communication terminal 24;

[0063] See also Figure 1 , the aforementioned controller includes a control circuit, a sensor circuit 51, and a time / speed / start / stop control panel 52 as a human-machine interaction, wherein the control circuit includes a power supply circuit 53 for powering each circuit, a single-chip control unit 50 as a central control unit, a temperature detection circuit 55, a safety detection circuit 56 as position safety, an overcurrent detection circuit 57 for monitoring the load working current, a power drive circuit 58 for driving the load operation, a solid-state relay 60 timing protection circuit 59, a solid-state relay 60 for controlling the load, and a communication transceiver 61 as a communication connection; wherein the solid-state relay 60 is arranged in the controller;

[0064] The time / speed / start / stop control panel 52 includes a liquid crystal display circuit 64, a button circuit 65, a parameter adjustment circuit 66, a sound alarm circuit 67, and a status indication circuit 68. The liquid crystal display circuit 64 is electrically connected to the output port of the single-chip control unit 50, the button circuit 65 and the parameter adjustment circuit 66 are both electrically connected to the input port of the single-chip control unit 50, and the sound alarm circuit 67 and the status indication circuit 68 are both electrically connected to the output port of the power drive circuit 58;

[0065] The sensor circuit 51 includes a non-contact temperature sensor 70 for the mixing barrel, a limit switch 71 for detecting the opening and closing state of the safety shield, and a current sensor 72 for detecting the current signal of the AC motor 82; the current sensor 72 is arranged at the power supply input terminal of the solid-state relay 60 or the AC motor 82, and the power supply input terminal passes through the current sensor 72. Since the current sensor 72 is provided with a conventional circuit structure in the prior art, it is not shown in the figure; the limit switch 71 is arranged on the electromechanical device and is linked to the safety shield. When the safety shield is covered on the mixing barrel, the limit switch 71 is closed; the current sensor 72 is electrically connected to the overcurrent detection circuit 57, and the overcurrent detection circuit 57 is electrically connected to the input port of the single-chip control unit 50; the limit switch 71 is electrically connected to the oversafety detection circuit 56 Electrical connection, the safety detection circuit 56 is electrically connected to the input port of the single-chip control unit 50; the non-contact temperature sensor 70 is electrically connected to the temperature detection circuit 55, the temperature detection circuit 55 is electrically connected to the input port of the single-chip control unit 50, the output port of the single-chip control unit 50 is electrically connected to the input end of the power drive circuit 58, the output port of the power drive circuit 58 is electrically connected to the input end of the solid-state relay 60, the output end of the solid-state relay 60 timing protection circuit 59 is electrically connected to the input end of the solid-state relay 60, and the output end of the solid-state relay 60 is electrically connected to the AC motor 82; the communication port of the single-chip control unit 50 is electrically connected to the communication transceiver 61, and the communication transceiver 61 is connected to the mobile communication terminal 24 wireless signal through a wireless network.

[0066] See also Figure 2 , the aforementioned mobile communication terminal 24 is a smart phone, and the control software of the controller includes the following control steps: step S1, initialization of the single-chip control unit 50, after the system is started, the internal program of the single-chip control unit 50 is initialized; step S2, receiving the parameter instruction of the smart phone, after initialization, first receiving the parameter instruction sent by the smart phone; step S3, processing the parameter instruction, and performing the corresponding processing program according to the received parameter instruction; step S4, controlling the operation of the dough mixer according to the user parameters, the single-chip control unit 50 outputs the control signal to the power drive circuit 58 through the output port of the single-chip control unit 50 according to the various user parameters received, so as to realize the operation control of the AC motor 82; and repeating step S2;

[0067] Step S5, receiving the panel parameter instruction. After receiving the parameter instruction sent by the smart phone and executing it, if there is an instruction input from the time / speed / start / stop control panel 52 of the controller, then receiving the parameter instruction input from the time / speed / start / stop control panel 52, and then repeating the process from step S3 to step S5;

[0068] Step S6, detecting sensor input, the single-chip control unit 50 opens the input terminal corresponding to each sensor, and sequentially obtains the temperature data of the non-contact temperature sensor 70 from the temperature detection circuit 55, obtains the switch state data of the limit switch 71 from the safety detection circuit 56, and obtains the current data of the current sensor 72 from the overcurrent detection circuit 57;

[0069] Step S7, processing sensor data, processing each sensor data in step S6; then repeating the process of step S4;

[0070] Step S8, collecting and displaying the dough mixer state, the single-chip control unit 50 collects various operating state parameters of the dough mixer, and outputs each operating state parameter to the liquid crystal display circuit 64 for display;

[0071] Step S9, reporting the dough mixer status to the smart phone, the single chip control unit 50 sends the various operating status parameters of the dough mixer in step S8 to the communication transceiver 61 through the communication port, and then the communication transceiver 61 sends them to the smart phone for display via the wireless network; and repeat step S8.

[0072] See also Figure 3 The APP monitoring software of the aforementioned smart phone includes the following functional modules: a wireless communication module 32, an information transceiver processing module 33, an upper and lower computer synchronization module 34, a monitoring module 35, a working parameter real-time monitoring module 36, a process parameter editing module 37, a process parameter storage module 38, and an abnormal alarm module 39; wherein the wireless communication module 32 is bidirectionally associated with the information transceiver processing module 33, the information transceiver processing module 33 is bidirectionally associated with the monitoring module 35, the information transceiver processing module 33 is bidirectionally associated with the upper and lower computer synchronization module 34, and the monitoring module 35 is unidirectionally associated with the upper and lower computer synchronization module 34; the monitoring module 35 is unidirectionally associated with the working parameter real-time monitoring module 36, and the monitoring module 35 is unidirectionally associated with the abnormal alarm module 39; the monitoring module 35 is unidirectionally associated with the process parameter storage module 38, the process parameter storage module 38 is bidirectionally associated with the process parameter editing module 37, and the process parameter editing module 37 is unidirectionally associated with the monitoring module 35.

[0073] As a preferred specific implementation circuit, see Figure 4 ,

[0074] The power supply circuit 53 includes a core power plug for an external 5V DC power supply and a 3.3V voltage-stabilized power supply integrated circuit U10. The core power plug J1 is electrically connected to the 3.3V voltage-stabilized power supply integrated circuit U10. A filter electrolytic capacitor C19 and a high-frequency filter capacitor C20 are provided between the core power plug J1 and the 3.3V voltage-stabilized power supply integrated circuit U10. A filter electrolytic capacitor C21 and a high-frequency filter capacitor C22 are also provided at the output end of the 3.3V voltage-stabilized power supply integrated circuit U10. The input end of the 3.3V voltage-stabilized power supply integrated circuit U10 serves as the positive power supply of the system power supply.

[0075] See also Figure 5 The aforementioned single-chip control unit 50 includes a 51 series single-chip microcomputer U1 of model STC90C516RC, pins 40 and 20 of the single-chip microcomputer U1 are respectively connected to the positive and negative electrodes of the working power supply, a crystal oscillator Y1 is connected between pins 18 and 19 of the single-chip microcomputer U1, and a power-on reset circuit 81 composed of a resistor R1 and a capacitor C3 is connected to pin 9 of the single-chip microcomputer U1; pins 32 to 39 of the single-chip microcomputer U1 are all connected to pull-up resistors, and the pull-up resistor is a row resistor RP1;

[0076] See also Figure 5 , the aforementioned temperature detection circuit 55, the temperature detection circuit 55 is arranged in the controller, the temperature detection circuit 55 is a temperature detection processing circuit with IIC communication function, the temperature detection processing circuit integrates the non-contact temperature sensor 70 into one, the positive power terminal of the temperature detection processing circuit is connected to the positive pole of the 3.3V power supply, the negative power terminal is grounded, and the IIC communication pin is respectively connected to the pin 14 and the pin 15 of the single-chip computer U1; the temperature detection circuit 55 can adopt the integrated non-contact temperature sensor 70 with IIC communication function on the existing market;

[0077] See also Figure 5 The aforementioned safety detection circuit 56 includes a pull-up resistor R0, one end of which is connected to the positive electrode of the power supply, and the other end is connected to the input pin 29 of the single-chip microcomputer U1; one end of the limit switch 71S1 is grounded, and the other end of the limit switch 71S1 is connected to the connection between the pull-up resistor R0 and the pin 29 of the single-chip microcomputer U1;

[0078] See also Figure 6The above-mentioned overcurrent detection circuit 57 includes a signal conversion circuit unit 73 that rectifies the AC current signal and converts it into a voltage signal, and a current signal amplifying circuit 74 that sorts out the current signal after converting the voltage signal, wherein the number of the signal conversion circuit units 73 corresponds to the number of power phases of the power supply of the AC motor 82, and the structure of each phase signal conversion circuit unit 73 is the same, and each phase signal conversion circuit unit 73 includes a current sensor 72 input socket J5~J7, a rectifier bridge B1~B3, an isolation diode D1~D3, and a conversion resistor R10~12 that converts the current signal into a voltage signal, the current sensor 72 input socket J5~J7 is connected to the input end of the rectifier bridge B1~B3, the conversion resistor R10~12 is connected between the positive and negative poles of the output end of the rectifier bridge B1~B3, and the positive pole of the isolation diode D1~D3 is connected to the positive pole of the output end of the rectifier bridge B1~B3; the current signal amplifying circuit 74 includes an input resistor R14, a voltage dividing resistor R15R15, and a filter capacitor C15 , operational amplifier U9A, 3-pin multi-turn precision potentiometer VR2, anti-jitter capacitor C16, output pull-up resistor R16; wherein, input resistor R14 and voltage divider resistor R15 are connected in series to form a voltage divider, the input end of input resistor R14 is simultaneously connected to the negative electrode of isolation diodes D1~D3 of each phase signal conversion circuit unit 73, one end of voltage divider resistor R15 is grounded, the input resistor R14 and voltage divider resistor R15 are connected in series to the inverting input end of operational amplifier U9A, and filter capacitor C15 is connected After grounding, it is connected to the connection point where the input resistor R14 and the voltage divider resistor R15 are connected in series; both ends of the 3-pin multi-turn tight precision potentiometer VR2 are connected between the positive and negative ends of the power supply, the output end of the 3-pin multi-turn tight precision potentiometer VR2 is connected to the in-phase input end of the operational amplifier U9A, and the anti-jitter capacitor C16 is connected to the output end of the 3-pin multi-turn tight precision potentiometer VR2 after being grounded; the output end of the operational amplifier U9A is connected to pin 17 of the microcontroller U1, and is connected to the positive pole of the power supply through the output pull-up resistor R16.

[0079] See also Figure 7 The aforementioned power driving circuit 58 includes a power driving integrated circuit U8 of model ULN2803A, wherein the output pin 18 of the power driving integrated circuit U8 is connected to the input pin 2, the output pin 18 is connected to the positive electrode of the power supply through a resistor, the input pins 5 to 8 are connected to the positive electrode of the power supply through their own corresponding pull-up resistors R9, the input pin 5 is connected to the output pin 1 of the single-chip microcomputer U1, the input pin 6 is connected to the output pin 3 of the single-chip microcomputer U1, the input pin 7 is connected to the output pin 5 of the single-chip microcomputer U1, and the input pin 8 is connected to the output pin 30 of the single-chip microcomputer U1;

[0080] See also Figure 8The aforementioned solid-state relay 60 timing protection circuit 59 includes a clock generation circuit 76, a two-way timing trigger circuit 77, and a logic processing circuit 78 for processing the control signal of the AC motor 82 output by the single-chip microcomputer U1, wherein the clock generation circuit 76 is mainly composed of a 555 timer integrated circuit U3, wherein pin 8 of the 555 timer integrated circuit U3 is connected to the power supply, pin 1 is grounded, pin 2 is connected to pin 6 and then to ground through a capacitor C9, pin 7 is connected to pin 6 through a resistor R8, pin 7 is connected to the positive electrode of the power supply through a resistor R7, pin 5 is grounded through a capacitor C7, and pin 4 is connected to pin 18 of the power driver integrated circuit U8;

[0081] The two timing trigger circuits 77 are both composed of dual master-slave D-type flip-flops U7-U8 of model SN7474N. The first timing trigger circuit 77 controls the AC motor 82 to run slowly, and the second timing trigger circuit 77 controls the AC motor 82 to run quickly. In the first timing trigger circuit 77, the corresponding dual master-slave D-type flip-flop U7 pins 14, 1, and 13 are all connected to the positive pole of the power supply, pin 7 is grounded, input pin 2 is connected to output pin 4 of the single-chip microcomputer U1, output pin 5 is connected to input pin 12, and pins 3 and 11 are connected to the 555 timing The output pin 3 of the integrated circuit U3 is connected, and the output pin 8 is connected to the input pin 3 of the power driver integrated circuit U8; in the second timing trigger circuit 77, the corresponding dual master-slave D-type trigger U6 pin 14, pin 1, and pin 13 are all connected to the positive pole of the power supply, pin 7 is grounded, the input pin 2 is connected to the output pin 6 of the single-chip microcomputer U1, the output pin 5 is connected to the input pin 12, pins 3 and 11 are both connected to the output pin 3 of the 555 timer integrated circuit U3, and the output pin 8 is connected to the input pin 4 of the power driver integrated circuit U8;

[0082] See also Fig. 9, the logic processing circuit 78 is composed of two NAND gate integrated circuits U4~U5 of model SN7400N; in the first NAND gate integrated circuit U4, pin 14 is connected to the positive pole of the power supply, pin 7 is grounded, input pin 1, pin 2 and pin 13 are all connected to the output pin 6 of the single-chip microcomputer U1, input pin 4, pin 5 and pin 12 are all connected to the output pin 4 of the single-chip microcomputer U1, output pin 6 is connected to input pin 10, output pin 3 is connected to input pin 9 and is also respectively connected to pin 4 and pin 10 of the dual master-slave D-type flip-flop corresponding to the second timing trigger circuit 77, and output pin 6 is respectively connected to pin 4 and pin 10 of the dual master-slave D-type flip-flop corresponding to the first timing trigger circuit 77; in the second NAND gate integrated circuit U5, pin 14 is connected to the positive pole of the power supply, pin 7 is grounded, input pin 1, pin 2 and pin 13 are all connected to the output pin 6 of the single-chip microcomputer U1, input pin 4, pin 5 and pin 12 are all connected to the output pin 4 of the single-chip microcomputer U1, output pin 6 is connected to input pin 10, output pin 3 is connected to input pin 9 and is also respectively connected to pin 4 and pin 10 of the dual master-slave D-type flip-flop corresponding to the first timing trigger circuit 77; Input pins 1 and 2 are both connected to output pin 2 of single-chip microcomputer U1, input pin 4 is connected to output pin 8 of the first NAND gate integrated circuit, input pin 5 is connected to output pin 11 of the first NAND gate integrated circuit, input pins 9 and 10 are both connected to output pin 6, input pin 12 is connected to output pin 8, input pin 13 is connected to output pin 3, and output pin 11 is connected to the input end of power driver integrated circuit U8 through a signal delay circuit 80, the signal delay circuit 80 is composed of a charging resistor R13 and a charging electrolytic capacitor connected in series, the negative electrode of the charging electrolytic capacitor is grounded, the charging resistor R13 is connected to output pin 11, and the series connection point of the charging resistor R13 and the charging electrolytic capacitor C14 is connected to the input pin 1 of the power driver integrated circuit U8. The signal delay circuit 80 provides a signal delay buffer for the AC motor to switch the working state, and also avoids accidents when it is triggered by mistake.

[0083] See also Fig.10A level conversion circuit 79 is provided between the aforementioned communication transceiver 61 and the single-chip computer U1. The level conversion circuit 79 mainly includes a 4-port communication plug J2, a 3-pin communication power selection jumper J12, and two NPN transistors Q1-Q2; wherein, the C pole of one NPN transistor Q2 is connected to pin 4 of the 4-port communication plug J2, and is connected to the output end of the 3.3V voltage-stabilized power supply integrated circuit U10 through a pull-up resistor R20, the E pole of the NPN transistor is connected to pin 11 of the single-chip computer U1, and the B pole of the NPN transistor is connected to the input end of the 3.3V voltage-stabilized power supply integrated circuit U10 through a pull-up resistor; the C pole of the other NPN transistor is connected to pin 10 of the single-chip computer U1, and is connected to the input end of the 3.3V voltage-stabilized power supply integrated circuit U10 through a pull-up resistor, and the NPN The E pole of the NPN transistor is connected to the pin 3 of the 4-port communication plug J2, and the B pole of the NPN transistor is connected to the output end of the 3.3V voltage-regulated power supply integrated circuit U10 through a pull-up resistor; Pin 2 of the 4-port communication plug J2 is connected to the power ground wire, Pin 1 of the 4-port communication plug J2 is connected to Pin 2 of the 3-pin communication power selection jumper J12, Pin 1 of the 3-pin communication power selection jumper J12 is connected to the output end of the 3.3V voltage-regulated power supply integrated circuit U10, and Pin 3 of the 3-pin communication power selection jumper J12 is connected to the input end of the 3.3V voltage-regulated power supply integrated circuit U10, and the 3-pin communication power selection jumper J12 is provided with a plug-in short-circuit piece for connecting the adjacent pins of Pin 2 of the 3-pin communication power selection jumper J12; The communication transceiver 61 is electrically connected to the level conversion circuit 79 through the 4-port communication plug J2.

[0084] See also Fig.11 The aforementioned liquid crystal display circuit 64 includes a brightness adjustment potentiometer VR1 and a liquid crystal display module LCD1 of model 12864. The pins of the liquid crystal display module LCD1 are connected as follows: the parallel display data pins 6 to 14 of the liquid crystal display module LCD1 are respectively connected to the P0 parallel output ports P0.0 to P0.7 of the single-chip computer U1, pins 1 and 20 are grounded, pins 2 and 19 are connected to the positive pole of the power supply, between pins 2 and 19, pin 3 is connected to the output pin of the brightness adjustment potentiometer VR1, and the two ends of the brightness adjustment potentiometer VR1 are respectively connected to pin 18 of the liquid crystal display module LCD1 and the positive pole of the power supply;

[0085] See also Fig.13The button circuit 65 includes two reset button switches SW1-SW2 for respectively controlling the signal input of the running speed of the AC motor 82, which are a fast button SW1 and a slow button SW2. One end of the slow button SW2 is grounded, and the other end is connected to the positive pole of the power supply through a pull-up resistor R45 and connected to the output pin 7 of the single-chip microcomputer U1. One end of the fast button SW1 is grounded, and the other end is connected to the positive pole of the power supply through a pull-up resistor R46 and connected to the output pin 8 of the single-chip microcomputer U1. When the fast button SW1 and the slow button SW2 are not operated, the AC motor 82 runs at a normal speed, and the dough mixer enters a normal dough mixing state.

[0086] See also Fig.12 , the parameter adjustment circuit 66 includes a rotary encoder U11 of model FQ14-5Z, wherein pins 1 and 3 of the rotary encoder U11 are both grounded, input pin 2 is connected to output pin 12 of the single-chip microcomputer U1 and connected to the positive pole of the power supply through a pull-up resistor R33, pin 4 is connected to output pin 16 of the single-chip microcomputer U1, and pin 5 is respectively connected to output pin 13 of the single-chip microcomputer U1;

[0087] See also Fig.13 , the aforementioned sound alarm circuit 67 is an active buzzer SP1, one end of the active buzzer SP1 is connected to the power supply, and the other end is connected to the output pin 11 of the power driving integrated circuit U8;

[0088] See also Fig.13 The aforementioned status indication circuit 68 includes four light-emitting diodes DS1~DS4, one end of each light-emitting diode is connected to the positive electrode of the power supply through a current-limiting resistor R41~R44 in series, and the four light-emitting diodes DS1~DS4 correspond to four states of the AC motor 82, namely, the main operation status indicator light, the slow operation status indicator light, the fast operation status indicator light, and the overload operation status indicator light; the other end of the light-emitting diode DS4 corresponding to the main operation status indicator light is connected to the output pin 14 of the power driver integrated circuit U8, the other end of the light-emitting diode DS3 corresponding to the slow operation status indicator light is connected to the output pin 13 of the power driver integrated circuit U8, and the other end of the light-emitting diode DS2 corresponding to the fast operation status indicator light is connected to the output pin 12 of the power driver integrated circuit U8; the other end of the light-emitting diode DS1 corresponding to the overload operation status indicator light is connected to the output pin 28 of the single-chip computer U1.

[0089] See also Figure 5 and Fig.13For the convenience of connection, the electrical connection between the aforementioned control circuit and the time / speed / start / stop control panel 52 is connected by a connector. A 4-pin socket and a 26-pin socket are provided on the periphery of the single-chip microcomputer U1. The 4-pin socket is used to connect to the non-contact temperature sensor 70, and the 26-pin socket is used to connect to the time / speed / start / stop control panel 52; Pin 1 of the 4-pin socket is connected to the positive pole of the 3.3V power supply, Pin 2 of the 4-pin socket is grounded, Pin 3 of the 4-pin socket is connected to Pin 14 of the single-chip microcomputer U1, and Pin 4 of the 4-pin socket is connected to Pin 15 of the single-chip microcomputer U1; Among the 26 pins of the 26-pin socket, Pin 1 is connected to the positive pole of the power supply, Pin 2 is grounded, and the other pins are respectively connected to the corresponding pins of the single-chip microcomputer U1 and the output pins of the power driver integrated circuit U8.

[0090] During production, two PCBs can be designed according to the above circuit, that is, the control circuit is made into one PCB as the main control board, and the time / speed / start / stop control panel 52 is made into another PCB as the operation control panel. The aforementioned input or output connectors are set as close to the edge of the PCB as possible for installation or maintenance.

[0091] When using, pour the fabric and water into the mixing bucket, cover the safety cover, start the power, set the relevant process parameters through the mobile phone to start kneading the dough, and remotely monitor the working status of the dough mixer.

[0092] The above description and specific embodiments do not constitute any limitation to the present invention. The present invention is not limited to the specific implementation modes disclosed and described above. Some modifications and variations of the present invention should also fall within the protection scope of the claims of the present invention.

Claims

1. A dough mixer system, comprising a dough mixer hardware system, a wireless network system, and a control system; the dough mixer hardware system comprises an electromechanical device, a controller for controlling the operation of the electromechanical device, and a mobile communication terminal as a remote monitoring device, wherein the mobile communication terminal and the controller are connected to each other through a wireless network system; the electromechanical device comprises a mixing barrel for containing flour, a safety shield provided on the mixing barrel, a stirring mechanism for mixing dough, an AC motor as a stirring power for mixing dough, and a speed reduction transmission mechanism connecting the stirring mechanism and the AC motor; the controller is electrically connected to the AC motor; and the characteristics are: The control system includes control software of the controller and APP monitoring software of the mobile communication terminal; The controller includes a control circuit, a sensor circuit, and a time / speed / start / stop control panel as a human-machine interaction, wherein the control circuit includes a power supply circuit for powering each circuit, a single-chip microcomputer control unit as a central control unit, a temperature detection circuit, a safety detection circuit as position safety, an overcurrent detection circuit for monitoring the load working current, a power drive circuit for driving the load operation, a solid-state relay timing protection circuit, a solid-state relay for controlling the load, and a communication transceiver as a communication connection; wherein the solid-state relay is arranged in the controller; The time / speed / start / stop control panel includes a liquid crystal display circuit, a button circuit, a parameter adjustment circuit, a sound alarm circuit, and a status indication circuit. The liquid crystal display circuit is electrically connected to the output port of the single-chip control unit, the button circuit and the parameter adjustment circuit are both electrically connected to the input port of the single-chip control unit, and the sound alarm circuit and the status indication circuit are both electrically connected to the output port of the power drive circuit; The sensor circuit includes a non-contact temperature sensor for the mixing barrel, a limit switch for detecting the opening and closing status of the safety cover, and a current sensor for detecting the current signal of the AC motor; the current sensor is arranged at the power supply terminal of the solid-state relay or the AC motor, and the power supply terminal passes through the current sensor; the limit switch is arranged on the electromechanical device and is linked to the safety cover, and the limit switch is closed when the safety cover is covered on the mixing barrel; the current sensor is electrically connected to the overcurrent detection circuit, and the overcurrent detection circuit is electrically connected to the input port of the single-chip microcomputer control unit; the limit switch is electrically connected to the oversafety detection circuit, and the safety detection circuit is electrically connected to the single-chip microcomputer control unit. The input port of the single-chip control unit is electrically connected; the non-contact temperature sensor is electrically connected to the temperature detection circuit, the temperature detection circuit is electrically connected to the input port of the single-chip control unit, the output port of the single-chip control unit is electrically connected to the input end of the power drive circuit, the output port of the power drive circuit is electrically connected to the input end of the solid-state relay, the output end of the solid-state relay timing protection circuit is electrically connected to the input end of the solid-state relay, and the output end of the solid-state relay is electrically connected to the AC motor; the communication port of the single-chip control unit is electrically connected to the communication transceiver, and the communication transceiver is connected to the wireless signal of the mobile communication terminal through a wireless network; The mobile communication terminal is a smart phone, and the control software of the controller includes the following control steps: step 1, initializing the single-chip microcomputer control unit, and initializing the internal program of the single-chip microcomputer control unit after the system is started; step 2, receiving the parameter instruction of the smart phone, and first receiving the parameter instruction sent by the smart phone after initialization; step 3, processing the parameter instruction, and performing the corresponding processing program according to the received parameter instruction; step 4, controlling the operation of the dough mixer according to the user parameters, and the single-chip microcomputer control unit outputs the control signal to the power drive circuit through the output port of the single-chip microcomputer control unit according to the various user parameters received, so as to realize the operation control of the AC motor; and repeating step 2; Step 5, receiving the panel parameter command. After receiving the parameter command sent by the smart phone and executing it, if there is a command input on the time / speed / start / stop control panel of the controller, then receiving the parameter command input on the time / speed / start / stop control panel, and then repeating the process from step 3 to step 5; Step 6: Detect sensor input. The single-chip control unit opens the input terminal corresponding to each sensor, and sequentially obtains temperature data of the non-contact temperature sensor from the temperature detection circuit, obtains switch state data of the limit switch from the safety detection circuit, and obtains current data of the current sensor from the overcurrent detection circuit; Step 7, processing sensor data, processing each sensor data in step 6; then repeating the process of step 4; Step 8, collecting and displaying the dough mixer state, the single-chip microcomputer control unit collects various operating state parameters of the dough mixer, and outputs each operating state parameter to the liquid crystal display circuit for display; Step nine, reporting the dough mixer status to the smart phone, the single-chip control unit sends the various operating status parameters of the dough mixer in step eight to the communication transceiver through the communication port, and then the communication transceiver sends them to the smart phone for display through the wireless network; and Repeat step eight.

2. The dough mixer system according to claim 1, characterized in that: The APP monitoring software of the smart phone includes the following functional modules: wireless communication module, information transceiver processing module, upper and lower computer synchronization module, monitoring module, working parameter real-time monitoring module, process parameter editing module, process parameter storage module, and abnormal alarm module; wherein the wireless communication module is bidirectionally associated with the information transceiver processing module, the information transceiver processing module is bidirectionally associated with the monitoring module, the information transceiver processing module is bidirectionally associated with the upper and lower computer synchronization module, and the monitoring module is unidirectionally associated with the upper and lower computer synchronization module; the monitoring module is unidirectionally associated with the working parameter real-time monitoring module, and the monitoring module is unidirectionally associated with the abnormal alarm module; the monitoring module is unidirectionally associated with the process parameter storage module, the process parameter storage module is bidirectionally associated with the process parameter editing module, and the process parameter editing module is unidirectionally associated with the monitoring module.

3. The dough mixer system according to claim 2, characterized in that: The power supply circuit includes a core power plug externally connected to a 5V DC power supply and a 3.3V voltage-stabilized power supply integrated circuit, the core power plug is electrically connected to the 3.3V voltage-stabilized power supply integrated circuit, a filter electrolytic capacitor and a high-frequency filter capacitor are arranged between the core power plug and the 3.3V voltage-stabilized power supply integrated circuit, and a filter electrolytic capacitor and a high-frequency filter capacitor are also arranged at the output end of the 3.3V voltage-stabilized power supply integrated circuit; the input end of the 3.3V voltage-stabilized power supply integrated circuit serves as the positive power supply of the system power supply; The single-chip control unit includes a 51 series single-chip microcomputer of model STC90C516RC, pins 40 and 20 of the single-chip microcomputer are respectively connected to the positive and negative electrodes of the working power supply, a crystal oscillator is connected between pins 18 and 19 of the single-chip microcomputer, and pin 9 of the single-chip microcomputer is connected to a power-on reset circuit composed of a resistor and a capacitor; pins 32 to 39 of the single-chip microcomputer are all connected to pull-up resistors, and the pull-up resistors are row resistors; The temperature detection circuit is arranged in the controller. The temperature detection circuit is a temperature detection processing circuit with an IIC communication function. The temperature detection processing circuit integrates a non-contact temperature sensor. The positive power terminal of the temperature detection processing circuit is connected to the positive pole of the 3.3V power supply, the negative power terminal is grounded, and the IIC communication pin is respectively connected to pin 14 and pin 15 of the single-chip computer; The safety detection circuit includes a pull-up resistor, one end of which is connected to the positive pole of the power supply and the other end is connected to the input pin 29 of the single-chip microcomputer; one end of the limit switch is grounded and the other end of the limit switch is connected to the connection between the pull-up resistor and the pin 29 of the single-chip microcomputer.

4. The dough mixer system according to claim 3, characterized in that: The overcurrent detection circuit includes a signal conversion circuit unit that rectifies the AC current signal and converts it into a voltage signal, and a current signal amplifying circuit that sorts out the current signal after the voltage signal is converted, wherein the number of signal conversion circuit units corresponds to the number of power phases of the AC motor power supply, and the structure of each phase signal conversion circuit unit is the same, and each phase signal conversion circuit unit includes a current sensor input socket, a rectifier bridge, an isolation diode, and a conversion resistor that converts the current signal into a voltage signal, the current sensor input socket is connected to the input end of the rectifier bridge, the conversion resistor is connected between the positive and negative poles of the output end of the rectifier bridge, and the positive pole of the isolation diode is connected to the positive pole of the output end of the rectifier bridge; the current signal amplifying circuit includes an input resistor, a voltage divider resistor, a filter capacitor, and an operational amplifier. , 3-pin multi-turn tight precision potentiometer, anti-jitter capacitor, output pull-up resistor; wherein, the input resistor and the voltage divider resistor are connected in series to form a voltage divider, the input end of the input resistor is simultaneously connected to the negative electrode of the isolation diode of each phase signal conversion circuit unit, one end of the voltage divider resistor is grounded, the input resistor and the voltage divider resistor are connected in series at the inverting input end of the operational amplifier, and the filter capacitor is grounded and connected to the input resistor and the voltage divider resistor in series; both ends of the 3-pin multi-turn tight precision potentiometer are connected between the positive and negative ends of the power supply, the output end of the 3-pin multi-turn tight precision potentiometer is connected to the in-phase input end of the operational amplifier, and the anti-jitter capacitor is grounded and connected to the output end of the 3-pin multi-turn tight precision potentiometer; the output end of the operational amplifier is connected to pin 17 of the microcontroller, and is connected to the positive pole of the power supply through the output pull-up resistor.

5. The dough mixer system according to claim 4, characterized in that: The power driving circuit includes a power driving integrated circuit of model ULN2803A, wherein the output pin 18 of the power driving integrated circuit is connected to the input pin 2, the output pin 18 is connected to the positive electrode of the power supply through a resistor, the input pins 5 to 8 are connected to the positive electrode of the power supply through their own corresponding pull-up resistors, the input pin 5 is connected to the output pin 1 of the single-chip computer, the input pin 6 is connected to the output pin 3 of the single-chip computer, the input pin 7 is connected to the output pin 5 of the single-chip computer, and the input pin 8 is connected to the output pin 30 of the single-chip computer; The solid-state relay timing protection circuit includes a clock generation circuit, a 2-way timing trigger circuit, and a logic processing circuit for processing the single-chip microcomputer output AC motor control signal, wherein the clock generation circuit is mainly composed of a 555 timer integrated circuit, pin 8 of the 555 timer integrated circuit is connected to the power supply, pin 1 is grounded, pin 2 is connected to pin 6 and then grounded through a capacitor, pin 7 is connected to pin 6 through a resistor, pin 7 is connected to the positive pole of the power supply through a resistor, pin 5 is grounded through a capacitor, and pin 4 is connected to pin 18 of the power driver integrated circuit; The two timing trigger circuits are both composed of a dual master-slave D-type trigger of model SN7474N. The first timing trigger circuit controls the AC motor to run slowly, and the second timing trigger circuit controls the AC motor to run quickly. In the first timing trigger circuit, the corresponding dual master-slave D-type trigger pins 14, 1, and 13 are all connected to the positive pole of the power supply, pin 7 is grounded, input pin 2 is connected to the output pin 4 of the single-chip microcomputer, output pin 5 is connected to the input pin 12, pin 3 and pin 11 are both connected to the output pin 3 of the 555 timer integrated circuit, and output pin 8 is connected to the input pin 3 of the power driver integrated circuit; in the second timing trigger circuit, the corresponding dual master-slave D-type trigger pins 14, 1, and 13 are all connected to the positive pole of the power supply, pin 7 is grounded, input pin 2 is connected to the output pin 6 of the single-chip microcomputer, output pin 5 is connected to the input pin 12, pin 3 and pin 11 are both connected to the output pin 3 of the 555 timer integrated circuit, and output pin 8 is connected to the input pin 4 of the power driver integrated circuit; The logic processing circuit is composed of two NAND gate integrated circuits of model SN7400N; in the first NAND gate integrated circuit, pin 14 is connected to the positive pole of the power supply, pin 7 is grounded, input pin 1, pin 2 and pin 13 are all connected to the output pin 6 of the single-chip microcomputer, input pin 4, pin 5 and pin 12 are all connected to the output pin 4 of the single-chip microcomputer, output pin 6 is connected to input pin 10, output pin 3 is connected to input pin 9 and is also respectively connected to pin 4 and pin 10 of the dual master-slave D-type trigger corresponding to the second timing trigger circuit, and output pin 6 is respectively connected to pin 4 and pin 10 of the dual master-slave D-type trigger corresponding to the first timing trigger circuit; in the second NAND gate integrated circuit, pin 14 is connected to the positive pole of the power supply, pin 7 is grounded, Input terminal pins 1 and 2 are both connected to output terminal pin 2 of the single-chip microcomputer, input terminal pin 4 is connected to output terminal pin 8 of the first NAND gate integrated circuit, input terminal pin 5 is connected to output terminal pin 11 of the first NAND gate integrated circuit, input terminal pins 9 and 10 are both connected to output terminal pin 6, input terminal pin 12 is connected to output terminal pin 8, input terminal pin 13 is connected to output terminal pin 3, and output terminal pin 11 is connected to the input terminal of the power driving integrated circuit through a signal delay circuit. The signal delay circuit is composed of a charging resistor and a charging electrolytic capacitor connected in series, the negative pole of the charging electrolytic capacitor is grounded, the charging resistor is connected to the output terminal pin 11, and the series connection point of the charging resistor and the charging electrolytic capacitor is connected to the input terminal pin 1 of the power driving integrated circuit.

6. The dough mixer system according to claim 5, characterized in that: A level conversion circuit is provided between the communication transceiver and the single-chip microcomputer, and the level conversion circuit mainly includes a 4-port communication plug, a 3-pin communication power selection jumper, and two NPN transistors; wherein, the C pole of one NPN transistor is connected to pin 4 of the 4-port communication plug, and is connected to the output end of the 3.3V voltage-stabilized power supply integrated circuit through a pull-up resistor, the E pole of the NPN transistor is connected to pin 11 of the single-chip microcomputer, and the B pole of the NPN transistor is connected to the input end of the 3.3V voltage-stabilized power supply integrated circuit through a pull-up resistor; the C pole of the other NPN transistor is connected to pin 10 of the single-chip microcomputer, and is connected to the input end of the 3.3V voltage-stabilized power supply integrated circuit through a pull-up resistor, and the E pole of the NPN transistor is connected to pin 11 of the single-chip microcomputer, and the B pole of the NPN transistor is connected to the input end of the 3.3V voltage-stabilized power supply integrated circuit through a pull-up resistor. The E pole of the transistor is connected to the pin 3 of the 4-port communication plug, and the B pole of the NPN transistor is connected to the output end of the 3.3V voltage-stabilized power supply integrated circuit through a pull-up resistor; the pin 2 of the 4-port communication plug is connected to the power ground wire, the pin 1 of the 4-port communication plug is connected to the pin 2 of the 3-pin communication power supply selection jumper, the pin 1 of the 3-pin communication power supply selection jumper is connected to the output end of the 3.3V voltage-stabilized power supply integrated circuit, and the pin 3 of the 3-pin communication power supply selection jumper is connected to the input end of the 3.3V voltage-stabilized power supply integrated circuit, and the 3-pin communication power supply selection jumper is provided with a plug-in short-circuit piece for connecting the adjacent pins of the pin 2 of the 3-pin communication power supply selection jumper; the communication transceiver is electrically connected to the level conversion circuit through the 4-port communication plug.

7. The dough mixer system according to claim 6, characterized in that: The liquid crystal display circuit includes a brightness adjustment potentiometer and a liquid crystal display module of model 12864. The pins of the liquid crystal display module are connected as follows: the parallel display data pins 6 to 14 of the liquid crystal display module are respectively connected to the P0 parallel output ports P0.0 to P0.7 of the single-chip microcomputer, pins 1 and 20 are grounded, pins 2 and 19 are connected to the positive pole of the power supply, and between pins 2 and 19, pin 3 is connected to the output pin of the brightness adjustment potentiometer, and the two ends of the brightness adjustment potentiometer are respectively connected to pin 18 of the liquid crystal display module and the positive pole of the power supply; The button circuit includes two reset button switches for inputting signals for controlling the running speed of the AC motor, namely a fast button and a slow button. One end of the slow button is grounded, and the other end is connected to the positive electrode of the power supply through a pull-up resistor and connected to the output pin 7 of the single-chip computer. One end of the fast button is grounded, and the other end is connected to the positive electrode of the power supply through a pull-up resistor and connected to the output pin 8 of the single-chip computer. The parameter adjustment circuit includes a rotary encoder of model FQ14-5Z, wherein pins 1 and 3 of the rotary encoder are both grounded, input pin 2 is connected to output pin 12 of the single-chip microcomputer and connected to the positive pole of the power supply through a pull-up resistor, pin 4 is connected to output pin 16 of the single-chip microcomputer, and pin 5 is respectively connected to output pin 13 of the single-chip microcomputer; The sound alarm circuit is an active buzzer, one end of the active buzzer is connected to the power supply, and the other end is connected to the output pin 11 of the power drive integrated circuit; The status indication circuit includes four light-emitting diodes, one end of each light-emitting diode is connected to the positive electrode of the power supply through a current-limiting resistor in series, and the four light-emitting diodes respectively indicate four states of the AC motor, namely, a main operation state indicator light, a slow operation state indicator light, a fast operation state indicator light, and an overload operation state indicator light; the other end of the light-emitting diode corresponding to the main operation state indicator light is connected to the output pin 14 of the power driver integrated circuit, the other end of the light-emitting diode corresponding to the slow operation state indicator light is connected to the output pin 13 of the power driver integrated circuit, and the other end of the light-emitting diode corresponding to the fast operation state indicator light is connected to the output pin 12 of the power driver integrated circuit; the other end of the light-emitting diode corresponding to the overload operation state indicator light is connected to the output pin 28 of the single-chip computer.

8. The dough mixer system according to claim 7, characterized in that: The electrical connection between the control circuit and the time / speed / start / stop control panel is connected by a connector. A 4-pin socket and a 26-pin socket are arranged on the periphery of the single-chip microcomputer. The 4-pin socket is used to connect to the non-contact temperature sensor, and the 26-pin socket is used to connect to the time / speed / start / stop control panel; Pin 1 of the 4-pin socket is connected to the positive pole of a 3.3V power supply, Pin 2 of the 4-pin socket is grounded, Pin 3 of the 4-pin socket is connected to Pin 14 of the single-chip microcomputer, and Pin 4 of the 4-pin socket is connected to Pin 15 of the single-chip microcomputer; Among the 26 pins of the 26-pin socket, Pin 1 is connected to the positive pole of the power supply, Pin 2 is grounded, and the other pins are respectively connected to the corresponding pins of the single-chip microcomputer and the output pins of the power drive integrated circuit.

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