Intelligent temperature controller capable of automatically adjusting

Abstract

The invention, which relates to the technical field of temperature control, discloses an automatic-adjustment intelligent temperature controller comprising a power supply module used for supplying power; the temperature detection module is used for temperature sampling and signal processing; the temperature judgment module is used for controlling the sampling control module to start timing work when the sampled temperature exceeds a temperature threshold value; the sampling control module is used for setting a first timing time and a second timing time, circularly outputting a high-level signal and a low-level signal in a timing manner, and adjusting the duration of outputting the low-level signal; the sampling and holding module is used for sampling transmission and sampling and holding of signals; the central control module is used for signal receiving and module control; the temperature change detection module is used for detecting the temperature difference and judging whether the temperature difference exceeds a set temperature difference threshold value or not, and the heating degree of the temperature adjusting module is reduced; and the temperature adjusting module is used for isolating heating treatment. The intelligent temperature controller capable of automatically adjusting can automatically control the temperature adjusting degree and improve the temperature control precision.

Description

Technical Field

[0001] The invention relates to the technical field of temperature control, in particular to an automatically regulating intelligent temperature controller. Background Art

[0002] An intelligent temperature controller is an instrument that can automatically control the temperature according to the required temperature. The intelligent temperature controller in the prior art generally adopts a microcontroller, a temperature sensor, a temperature controller, etc., and detects the temperature. When the temperature does not reach the set temperature threshold, the microcontroller automatically controls the temperature controller to perform heating processing. When the temperature reaches the temperature threshold, the heating work is stopped. However, since the heating rate of the temperature controller is unstable and the heating work may not be stopped in time after the temperature reaches the set temperature threshold, there is a certain gap between the final temperature and the required temperature. The temperature control of the intelligent thermostat is inaccurate and needs to be improved. Summary of the invention

[0003] The embodiment of the present invention provides an automatically adjustable intelligent temperature controller to solve the problems raised in the above background technology.

[0004] According to an embodiment of the present invention, there is provided an automatically adjustable intelligent temperature controller, comprising: a power supply module, a temperature detection module, a temperature judgment module, a central control module, a sampling control module, a sampling and holding module, a temperature change detection module and a temperature adjustment module; A power module, used for receiving AC power and performing rectification, filtering and multi-channel voltage stabilization on the AC power, and outputting a first electric energy and a second electric energy; A temperature detection module, connected to the power module, configured to receive the first electric energy and perform temperature sampling, amplify the sampled signal and output a first detection signal; A temperature judgment module, connected to the temperature detection module, for setting a temperature threshold and outputting a first control signal when a first detection signal is greater than the temperature threshold; A sampling control module, connected to the power supply module, the temperature judgment module and the central control module, for setting a first timing time and a second timing time and performing a cyclic timing operation, outputting a first high-level signal during the first timing time and a first low-level signal during the second timing time when receiving the second electric energy and the first control signal, and adjusting the duration of the second timing time when receiving the first adjustment signal output by the central control module; A sampling and holding module, connected to the sampling control module and the temperature detection module, for sampling and transmitting the first detection signal and outputting a second sampling signal when receiving a first low-level signal, and for holding the sampled signal and outputting a first holding signal when receiving a first high-level signal; A central control module, connected to the temperature detection module and the temperature change detection module, for receiving a first detection signal, outputting a first adjustment signal when receiving a first low-level signal, and adjusting the duty cycle of the first adjustment signal when receiving the first low-level signal for a second time, outputting a second adjustment signal, and adjusting the duty cycle of the second adjustment signal when receiving a second detection signal output by the temperature change detection module; A temperature change detection module, connected to the sampling and holding module, for performing subtraction processing on the input first detection signal and the first holding signal and outputting a first temperature difference signal, setting a temperature difference threshold, and outputting a second detection signal when the first temperature difference signal is greater than the temperature difference threshold, dividing the first temperature difference signal and outputting a third adjustment signal; The temperature adjustment module is connected to the power module, the temperature change detection module and the central control module, and is used to receive AC power and isolate and heat the heater when receiving the second adjustment signal, and reduce the heating rate of the heater when receiving the third adjustment signal.

[0005] As a further solution of the present invention: the power module includes a power interface, a first capacitor, a first converter, a second capacitor and a third capacitor; the temperature detection module includes a first resistor, a first temperature sensor, a second resistor, a third resistor, a first amplifier, a first voltage stabilization source and a fourth resistor; the central control module includes an intelligent controller; Preferably, the first end of the power interface is connected to the first input end of the first converter and is connected to the second end of the power interface and the second input end of the first converter through the first capacitor, the first output end of the first converter is connected to one end of the third capacitor, one end of the second resistor and the fourth end of the first amplifier and is connected to the third end of the first temperature sensor through the first resistor, the second output end of the first converter is connected to the first end of the second capacitor and the sampling control module, the other end of the second resistor is connected to the second end of the first amplifier and is connected to the fifth end of the first amplifier, the first end of the first temperature sensor, the other end of the third capacitor, the ground end of the first converter, the second end of the second capacitor and the ground end through the third resistor, the second end of the first temperature sensor is connected to the third end of the first amplifier, the first end of the first amplifier is connected to the eighth end of the first amplifier through the fourth resistor, and the sixth end of the first amplifier is connected to the IO1 end of the intelligent controller, the sampling and holding module and the temperature judgment module.

[0006] As a further solution of the present invention: the temperature judgment module includes a first potentiometer and a third diode; Preferably, one end of the first potentiometer is connected to the sixth end of the first amplifier, the other end of the first potentiometer is connected to the cathode of the third diode, and the anode of the third diode is connected to the sampling control module.

[0007] As a further solution of the present invention: the sampling control module includes an eighth resistor, a seventh resistor, a first diode, a second diode, a ninth resistor, a fifth capacitor, a first insulated gate field effect transistor, a sixth capacitor, a cycle timer and a first crystal switch tube; Preferably, one end of the eighth resistor is connected to the eighth end of the cycle timer, the collector of the first crystal switch tube and the first end of the second capacitor, the base of the first crystal switch tube is connected to the anode of the third diode, the emitter of the first crystal switch tube is connected to the fourth end of the cycle timer, the third end of the cycle timer is connected to the fourth end of the intelligent controller and the sampling and holding module, the other end of the eighth resistor is connected to the anode of the first diode, the cathode of the second diode and the seventh end of the cycle timer, the cathode of the first diode is connected to one end of the fifth capacitor, the source of the first insulated gate field effect tube, the second end and the sixth end of the cycle timer through the seventh resistor, the anode of the second diode is connected to the drain of the first insulated gate field effect tube through the ninth resistor, the gate of the first insulated gate field effect tube is connected to the IO3 end of the intelligent controller, and the fifth end of the cycle timer is connected to the first end of the cycle timer, the other end of the fifth capacitor and the ground through the sixth capacitor.

[0008] As a further solution of the present invention: the sampling and holding module includes a first operational amplifier, a first control tube, a fourth capacitor, a sixth resistor, a second operational amplifier and a fifth resistor; Preferably, the non-inverting terminal of the first operational amplifier is connected to the sixth terminal of the first amplifier, the inverting terminal of the first operational amplifier is connected to the inverting terminal and the output terminal of the second operational amplifier through the fifth resistor, the non-inverting terminal of the second operational amplifier is connected to the source of the first control tube, the drain of the first control tube is connected to the non-inverting terminal of the second operational amplifier and is grounded in sequence through the fourth capacitor and the sixth resistor, and the gate of the first control tube is connected to the third terminal of the cycle timer.

[0009] As a further solution of the present invention: the temperature change detection module includes a fifteenth resistor, a sixteenth resistor, a third operational amplifier, a seventeenth resistor, a tenth resistor, a second potentiometer, a third potentiometer, a fourth diode and a signal transmission device; Preferably, the inverting end of the third operational amplifier is connected to one end of the seventeenth resistor and is connected to the output end of the second operational amplifier through the fifteenth resistor, the inverting end of the third operational amplifier is connected to one end of the tenth resistor and is connected to the sixth end of the first amplifier through the sixteenth resistor, the output end of the third operational amplifier is connected to the other end of the seventeenth resistor, one end of the third potentiometer and one end of the second potentiometer, the other end and the slider end of the third operational amplifier are both connected to the cathode of the fourth diode, the anode of the fourth diode is connected to the IO5 end of the intelligent controller and the CTRL end of the signal transmission device, the IN end of the signal transmission device is connected to the slider end of the second potentiometer, the other end of the second potentiometer and the other end of the tenth resistor are both grounded, and the OUT end of the signal transmission device is connected to the base of the second transistor switch tube.

[0010] As a further solution of the present invention: the temperature adjustment module includes a first thyristor, an eleventh resistor, a twelfth resistor, a seventh capacitor, a bidirectional optocoupler, a second insulated gate field effect transistor, a fourteenth resistor, a second crystal switch tube, a thirteenth resistor and a second voltage stabilization source; Preferably, one end of the first thyristor is connected to the first end of the power interface and is connected to one end of the seventh capacitor and one end of the twelfth resistor through an eleventh resistor, the other end of the twelfth resistor is connected to the first input end of the bidirectional optocoupler, the first output end of the bidirectional optocoupler is connected to the control end of the first thyristor, the first end of the heater is connected to the second end of the power interface, the other end of the first thyristor is connected to the other end of the seventh capacitor and the second end of the heater, the second input end of the bidirectional optocoupler is connected to the IO2 end of the first control, the second output end of the bidirectional optocoupler is connected to the drain of the second insulated gate field effect transistor, the gate of the second insulated gate field effect transistor is connected to the collector of the second crystal switch tube and is connected to the second voltage stabilizing source through a thirteenth resistor, the emitter of the second crystal switch tube is connected to the source of the second insulated gate field effect tube and the ground through a fourteenth resistor, and the base of the second crystal switch tube is connected to the OUT end of the signal transmission device.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the automatically adjustable intelligent temperature controller of the present invention performs temperature detection and signal processing through the temperature detection module, and the temperature judgment module judges whether the temperature reaches the set temperature threshold, and when the set temperature threshold is reached, the sampling control module cyclically controls the sampling transmission time and the sampling holding time of the sampling holding, and in the sampling holding state, the temperature change detection module performs temperature difference detection, and then judges the temperature change rate within the sampling holding time, and when the temperature change exceeds the set temperature difference threshold, automatically reduces the heating degree of the temperature adjustment module, and when the temperature change does not exceed the temperature difference threshold, the sampling transmission time will be further extended, and then the temperature change degree is judged, the temperature adjustment degree is controlled, and the temperature control accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0013] Figure 1 A schematic block diagram of a principle of an automatically adjustable intelligent temperature controller provided by an embodiment of the present invention.

[0014] Figure 2 A circuit diagram of an automatically adjustable intelligent temperature controller provided by an embodiment of the present invention.

[0015] Figure 3 A circuit diagram of a temperature change detection module provided in an embodiment of the present invention.

[0016] Figure 4 A circuit diagram of a temperature adjustment module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In one embodiment, see Figure 1 , an automatically adjustable intelligent temperature controller, comprising: a power module 1, a temperature detection module 2, a temperature judgment module 3, a central control module 4, a sampling control module 5, a sampling and holding module 6, a temperature change detection module 7 and a temperature adjustment module 8; Specifically, the power module 1 is used to receive AC power and perform rectification, filtering and multi-channel voltage stabilization on the AC power to output the first power and the second power; The temperature detection module 2 is connected to the power module 1, and is used to receive the first electric energy and perform temperature sampling, amplify the sampled signal and output a first detection signal; A temperature judgment module 3, connected to the temperature detection module 2, for setting a temperature threshold and outputting a first control signal when a first detection signal is greater than the temperature threshold; The sampling control module 5 is connected to the power supply module 1, the temperature judgment module 3 and the central control module 4, and is used to set the first timing time and the second timing time and perform cyclic timing work. When receiving the second electric energy and the first control signal, the first high-level signal is output during the first timing time, and the first low-level signal is output during the second timing time. When receiving the first adjustment signal output by the central control module 4, the duration of the second timing time is adjusted; The sampling and holding module 6 is connected to the sampling control module 5 and the temperature detection module 2, and is used for sampling and transmitting the first detection signal and outputting the second sampling signal when receiving the first low-level signal, and for holding the sampled signal and outputting the first holding signal when receiving the first high-level signal; The central control module 4 is connected to the temperature detection module 2 and the temperature change detection module 7, and is used to receive the first detection signal, output a first adjustment signal when receiving the first low-level signal, and adjust the duty cycle of the first adjustment signal when receiving the first low-level signal for the second time, output a second adjustment signal, and adjust the duty cycle of the second adjustment signal when receiving the second detection signal output by the temperature change detection module 7; The temperature change detection module 7 is connected to the sampling and holding module 6, and is used to perform subtraction processing on the input first detection signal and the first holding signal and output a first temperature difference signal, set a temperature difference threshold, and output a second detection signal when the first temperature difference signal is greater than the temperature difference threshold, divide the first temperature difference signal and output a third adjustment signal; The temperature adjustment module 8 is connected to the power module 1, the temperature change detection module 7 and the central control module 4, and is used to receive AC power and isolate and heat the heater when receiving the second adjustment signal, and reduce the heating rate of the heater when receiving the third adjustment signal.

[0019] In a specific embodiment, the power supply module 1 can adopt a power supply circuit composed of a power supply interface, a capacitor and a converter, can be connected to AC power and perform rectification, filtering and multi-channel voltage stabilization on the AC power; the temperature detection module 2 can adopt a temperature detection circuit composed of a temperature sensor, a resistor and a positive and negative pressure source, can perform temperature detection and amplify and filter the temperature detection signal; the temperature judgment module 3 can adopt a temperature judgment circuit composed of a potentiometer and a diode, can set a temperature threshold, and judge whether the sampled signal is greater than the temperature threshold, and the temperature threshold is lower than the required heating temperature; the central control module 4 can adopt a central control circuit composed of a single-chip microcomputer, which integrates many components such as an operator, a controller, a memory and an input and output device to realize signal processing, data storage, module control, timing control and other functions; the sampling control module 5 can adopt a sampling control circuit composed of a timer, a diode, a field effect transistor, a capacitor, etc., which can set a first timing time and a second Timing time, in the first timing time, a signal in a high-level state is output, and in the second timing time, a signal in a low-level state is output, and cyclic timing control is performed; the above-mentioned sampling and holding module 6 can adopt a sampling and holding circuit composed of a capacitor, a field effect tube, an operational amplifier, etc., and can sample and transmit the input signal, or sample and hold the input signal; the above-mentioned temperature change detection module 7 can sample a temperature change detection circuit composed of a resistor, an operational amplifier, a potentiometer, a diode, etc., and can perform subtraction processing on the signal output by the temperature detection module 2 and the signal sampled and held output by the sampling and holding module 6 to obtain the temperature difference, and determine whether the temperature difference is greater than the set temperature difference threshold and adjust the heating degree of the temperature adjustment module 8; the above-mentioned temperature adjustment module 8 can adopt a temperature adjustment circuit composed of a heater, a thyristor, a photocoupler, a field effect tube, etc., which can be controlled by the central control module 4 and perform heating work, and the heating degree can also be controlled by the temperature change detection module 7.

[0020] In another embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The power module 1 includes a power interface, a first capacitor C1, a first converter T1, a second capacitor C2 and a third capacitor C3; the temperature detection module 2 includes a first resistor R1, a first temperature sensor PT1, a second resistor R2, a third resistor R3, a first amplifier U2, a first voltage regulator VCC1 and a fourth resistor R4; the central control module 4 includes an intelligent controller U1; Specifically, the first end of the power interface is connected to the first input end of the first converter T1 and is connected to the second end of the power interface and the second input end of the first converter T1 through the first capacitor C1. The first output end of the first converter T1 is connected to one end of the third capacitor C3, one end of the second resistor R2 and the fourth end of the first amplifier U2 and is connected to the third end of the first temperature sensor PT1 through the first resistor R1. The second output end of the first converter T1 is connected to the first end of the second capacitor C2 and the sampling control module 5. The other end of the second resistor R2 is connected to the second end of the first amplifier U2 and is connected to the fifth end of the first amplifier U2, the first end of the first temperature sensor PT1, the other end of the third capacitor C3, the ground end of the first converter T1, the second end of the second capacitor C2 and the ground end through the third resistor R3. The second end of the first temperature sensor PT1 is connected to the third end of the first amplifier U2. The first end of the first amplifier U2 is connected to the eighth end of the first amplifier U2 through the fourth resistor R4. The sixth end of the first amplifier U2 is connected to the IO1 end of the intelligent controller U1, the sampling and holding module 6 and the temperature judgment module 3.

[0021] In a specific embodiment, the first converter T1 may be composed of a rectifier and a plurality of voltage regulators; the first temperature sensor PT1 may be a PT1000 temperature sensor; and the first amplifier U2 may be an AD623AR instrument amplifier.

[0022] Furthermore, the temperature determination module 3 includes a first potentiometer RP1 and a third diode D3; Specifically, one end of the first potentiometer RP1 is connected to the sixth end of the first amplifier U2 , the other end of the first potentiometer RP1 is connected to the cathode of the third diode D3 , and the anode of the third diode D3 is connected to the sampling control module 5 .

[0023] In a specific embodiment, the third diode D3 and the first potentiometer RP1 set the temperature threshold.

[0024] Further, the sampling control module 5 includes an eighth resistor R8, a seventh resistor R7, a first diode D1, a second diode D2, a ninth resistor R9, a fifth capacitor C5, a first insulated gate field effect transistor Q1, a sixth capacitor C6, a cycle timer U3 and a first crystal switch tube V1; Specifically, one end of the eighth resistor R8 is connected to the eighth end of the cycle timer U3, the collector of the first crystal switch tube V1 and the first end of the second capacitor C2, the base of the first crystal switch tube V1 is connected to the anode of the third diode D3, the emitter of the first crystal switch tube V1 is connected to the fourth end of the cycle timer U3, the third end of the cycle timer U3 is connected to the fourth end of the intelligent controller U1 and the sampling and holding module 6, and the other end of the eighth resistor R8 is connected to the anode of the first diode D1, the cathode of the second diode D2 and the cycle timer U3 The cathode of the first diode D1 is connected to one end of the fifth capacitor C5, the source of the first insulated gate field effect transistor Q1, the second end and the sixth end of the cycle timer U3 through the seventh resistor R7, the anode of the second diode D2 is connected to the drain of the first insulated gate field effect transistor Q1 through the ninth resistor R9, the gate of the first insulated gate field effect transistor Q1 is connected to the IO3 end of the intelligent controller U1, and the fifth end of the cycle timer U3 is connected to the first end of the cycle timer U3, the other end of the fifth capacitor C5 and the ground through the sixth capacitor C6.

[0025] In a specific embodiment, the above-mentioned cycle timer U3 can use NE555 chip; the above-mentioned first insulated gate field effect transistor Q1 can use N-channel field effect transistor, and cooperate with the ninth resistor R9 to set the second timing time; the above-mentioned seventh resistor R7 sets the first timing time; the above-mentioned first crystal switch tube V1 can use NPN transistor.

[0026] Further, the sampling and holding module 6 includes a first operational amplifier OP1, a first control tube M1, a fourth capacitor C4, a sixth resistor R6, a second operational amplifier OP2 and a fifth resistor R5; Specifically, the non-inverting end of the first operational amplifier OP1 is connected to the sixth end of the first amplifier U2, the inverting end of the first operational amplifier OP1 is connected to the inverting end and the output end of the second operational amplifier OP2 through the fifth resistor R5, the non-inverting end of the second operational amplifier OP2 is connected to the source of the first control tube M1, the drain of the first control tube M1 is connected to the non-inverting end of the second operational amplifier OP2 and is grounded through the fourth capacitor C4 and the sixth resistor R6 in sequence, and the gate of the first control tube M1 is connected to the third end of the cycle timer U3.

[0027] In a specific embodiment, both the first operational amplifier OP1 and the second operational amplifier OP2 may be OP07 operational amplifiers; the fourth capacitor C4 and the sixth resistor R6 perform signal sampling processing; the first control tube M1 may be a P-channel junction field effect tube. When the first control tube M1 is turned on, the fourth capacitor C4 and the sixth resistor R6 are in a sampling transmission state; when the first control tube M1 is turned off, the fourth capacitor C4 and the sixth resistor R6 are in a sampling and holding state.

[0028] Further, the temperature change detection module 7 includes a fifteenth resistor R15, a sixteenth resistor R16, a third operational amplifier OP3, a seventeenth resistor R17, a tenth resistor R10, a second potentiometer RP2, a third potentiometer RP3, a fourth diode D4 and a signal transmission device U5; Specifically, the inverting end of the third operational amplifier OP3 is connected to one end of the seventeenth resistor R17 and is connected to the output end of the second operational amplifier OP2 through the fifteenth resistor R15, the inverting end of the third operational amplifier OP3 is connected to one end of the tenth resistor R10 and is connected to the sixth end of the first amplifier U2 through the sixteenth resistor R16, the output end of the third operational amplifier OP3 is connected to the other end of the seventeenth resistor R17, one end of the third potentiometer RP3 and one end of the second potentiometer RP2, the other end and the slider end of the third operational amplifier OP3 are both connected to the cathode of the fourth diode D4, the anode of the fourth diode D4 is connected to the IO5 end of the intelligent controller U1 and the CTRL end of the signal transmission device U5, the IN end of the signal transmission device U5 is connected to the slider end of the second potentiometer RP2, the other end of the second potentiometer RP2 and the other end of the tenth resistor R10 are both grounded, and the OUT end of the signal transmission device U5 is connected to the base of the second transistor switch tube V2.

[0029] In a specific embodiment, the third operational amplifier OP3 may use an OP07 operational amplifier, and cooperate with the fifteenth resistor R15, the sixteenth resistor R16, the seventeenth resistor R17 and the tenth resistor R10 to perform subtraction processing; the fourth diode D4 and the third potentiometer RP3 set the temperature difference threshold; the signal transmission device U5 may use a CD4066 chip.

[0030] Further, the temperature adjustment module 8 includes a first thyristor S1, an eleventh resistor R11, a twelfth resistor R12, a seventh capacitor C7, a bidirectional optocoupler U4, a second insulated gate field effect transistor Q2, a fourteenth resistor R14, a second crystal switch tube V2, a thirteenth resistor R13 and a second voltage regulator VCC2; Specifically, one end of the first thyristor S1 is connected to the first end of the power interface and is connected to one end of the seventh capacitor C7 and one end of the twelfth resistor R12 through the eleventh resistor R11, the other end of the twelfth resistor R12 is connected to the first input end of the bidirectional optocoupler U4, the first output end of the bidirectional optocoupler U4 is connected to the control end of the first thyristor S1, the first end of the heater is connected to the second end of the power interface, the other end of the first thyristor S1 is connected to the other end of the seventh capacitor C7 and the second end of the heater, the second input end of the bidirectional optocoupler U4 is connected to the IO2 end of the first control, the second output end of the bidirectional optocoupler U4 is connected to the drain of the second insulated gate field effect transistor Q2, the gate of the second insulated gate field effect transistor Q2 is connected to the collector of the second crystal switch tube V2 and is connected to the second voltage regulator VCC2 through the thirteenth resistor R13, the emitter of the second crystal switch tube V2 is connected to the source of the second insulated gate field effect transistor Q2 and the ground end through the fourteenth resistor R14, and the base of the second crystal switch tube V2 is connected to the OUT end of the signal transmission device U5.

[0031] In a specific embodiment, the first thyristor S1 can be a bidirectional thyristor; the bidirectional optocoupler U4 can be a MOC3041 bidirectional photocoupler; the second insulated gate field effect transistor Q2 can be an N-channel field effect transistor; and the second crystal switch tube V2 can be an NPN transistor.

[0032] In an automatic regulating intelligent temperature controller of the present embodiment, AC power is connected through a power interface, and the IO2 end of the intelligent controller U1 drives the bidirectional optical coupler U4 to turn on, and then controls the first thyristor S1 to turn on, so that the heater is powered and performs heating work, and the first converter T1, the first capacitor C1, the second capacitor C2 and the third capacitor perform rectification, filtering and multi-channel voltage stabilization on the AC power, so that the first temperature sensor PT1 performs temperature sampling, and cooperates with the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the first amplifier U2 to amplify the sampled signal so that it can be received by the IO2 end of the intelligent controller U1. When the temperature signal processed by the first amplifier U2 is greater than the first potentiometer RP1, the temperature sensor PT1 performs temperature sampling, and the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the first amplifier U2 perform amplification processing on the sampled signal ... When the temperature threshold set by the third diode D3 is reached, that is, the temperature heated by the heater is about to reach the required temperature, the first crystal switch tube V1 is turned on, so that the cycle timer U3 starts to perform timing work, and the seventh resistor R7 adjusts the time when the cycle timer U3 outputs the first high-level signal, and the IO3 end of the intelligent controller U1 drives the first insulated gate field effect transistor Q1 to turn on, and the ninth resistor R9 and the first insulated gate field effect transistor Q1 adjust the time when the cycle timer U3 outputs the first low-level signal, so that the first control tube M1 is turned on when receiving the first low-level signal, and the fourth capacitor C4 cooperates with the sixth resistor R6, the first operational amplifier OP1, the second operational amplifier OP2 and the fifth resistor R5 to perform signal sampling processing and directly The first control tube M1 is cut off when it receives the first high-level signal for the first time, so that the fourth capacitor C4 and the sixth resistor R6 hold the sampled signal and output it through the second operational amplifier OP2. During the signal holding period, the third operational amplifier OP3 cooperates with the fifteenth resistor R15, the sixteenth resistor R16, the seventeenth resistor R17 and the tenth resistor R10 to perform subtraction processing on the real-time sampled signal and the held signal. If the temperature difference obtained by subtraction is greater than the temperature difference threshold set by the fourth diode D4 and the third potentiometer RP3, it means that the temperature rises faster during the holding period. At this time, the signal transmission device U5 is turned on, and the obtained temperature difference is divided by the second potentiometer RP2 to trigger the second crystal. The body switch tube V2 is turned on, and then the signal transmitted by the bidirectional optocoupler U4 is reduced, the conduction degree of the first thyristor S1 is reduced, and the heating temperature of the heater is reduced. Since the temperature increase of the heater will cause its heating rate to become faster, if the temperature difference does not exceed the temperature difference threshold and the temperature does not reach the required level when the first control tube M1 receives the first low-level signal for the first time, the IO3 end of the intelligent controller U1 will change the conduction degree of the first insulated gate field effect tube Q1, and then increase the duration of the cycle timer U3 outputting the first low-level signal, extend the sampling transmission time, and increase the heating time, so that when the first low-level signal is output again, the temperature rate detection is performed again, and after the temperature difference exceeds the temperature difference threshold, the heating temperature of the heater is automatically reduced.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatically adjustable intelligent thermostat, characterized in that: The automatic regulating intelligent temperature controller comprises: a power supply module, a temperature detection module, a temperature judgment module, a central control module, a sampling control module, a sampling and holding module, a temperature change detection module and a temperature regulating module; The power supply module is used to receive AC power and perform rectification, filtering and multi-channel voltage stabilization on the AC power to output the first power and the second power; The temperature detection module is connected to the power module, and is used to receive the first electric energy and perform temperature sampling, amplify the sampled signal and output a first detection signal; The temperature judgment module is connected to the temperature detection module and is used to set a temperature threshold and output a first control signal when the first detection signal is greater than the temperature threshold; The sampling control module is connected to the power supply module, the temperature judgment module and the central control module, and is used to set the first timing time and the second timing time and perform cyclic timing work. When receiving the second electric energy and the first control signal, it outputs a first high-level signal during the first timing time, and outputs a first low-level signal during the second timing time. When receiving the first adjustment signal output by the central control module, it adjusts the duration of the second timing time; The sampling and holding module is connected to the sampling control module and the temperature detection module, and is used to sample and transmit the first detection signal and output the second sampling signal when receiving the first low-level signal, and to hold the sampled signal and output the first holding signal when receiving the first high-level signal; The central control module is connected to the temperature detection module and the temperature change detection module, and is used to receive a first detection signal, output a first adjustment signal when receiving a first low-level signal, and adjust the duty cycle of the first adjustment signal when receiving the first low-level signal for the second time, output a second adjustment signal, and adjust the duty cycle of the second adjustment signal when receiving a second detection signal output by the temperature change detection module; The temperature change detection module is connected to the sampling and holding module, and is used to perform subtraction processing on the input first detection signal and the first holding signal and output a first temperature difference signal, set a temperature difference threshold, and when the first temperature difference signal is greater than the temperature difference threshold, output a second detection signal, divide the first temperature difference signal and output a third adjustment signal; The temperature adjustment module is connected to the power module, the temperature change detection module and the central control module, and is used to receive AC power and isolate and heat the heater when receiving the second adjustment signal, and reduce the heating rate of the heater when receiving the third adjustment signal.

2. The automatic regulating intelligent thermostat according to claim 1, characterized in that: The power module includes a power interface, a first capacitor, a first converter, a second capacitor and a third capacitor; the temperature detection module includes a first resistor, a first temperature sensor, a second resistor, a third resistor, a first amplifier, a first voltage stabilization source and a fourth resistor; the central control module includes an intelligent controller; The first end of the power interface is connected to the first input end of the first converter and is connected to the second end of the power interface and the second input end of the first converter through the first capacitor. The first output end of the first converter is connected to one end of the third capacitor, one end of the second resistor and the fourth end of the first amplifier and is connected to the third end of the first temperature sensor through the first resistor. The second output end of the first converter is connected to the first end of the second capacitor and the sampling control module. The other end of the second resistor is connected to the second end of the first amplifier and is connected to the fifth end of the first amplifier, the first end of the first temperature sensor, the other end of the third capacitor, the ground end of the first converter, the second end of the second capacitor and the ground end through the third resistor. The second end of the first temperature sensor is connected to the third end of the first amplifier. The first end of the first amplifier is connected to the eighth end of the first amplifier through the fourth resistor. The sixth end of the first amplifier is connected to the IO1 end of the intelligent controller, the sampling and holding module and the temperature judgment module.

3. The automatic regulating intelligent thermostat according to claim 2, characterized in that: The temperature judgment module includes a first potentiometer and a third diode; One end of the first potentiometer is connected to the sixth end of the first amplifier, the other end of the first potentiometer is connected to the cathode of the third diode, and the anode of the third diode is connected to the sampling control module.

4. The automatic regulating intelligent thermostat according to claim 3, characterized in that: The sampling control module includes an eighth resistor, a seventh resistor, a first diode, a second diode, a ninth resistor, a fifth capacitor, a first insulated gate field effect transistor, a sixth capacitor, a cycle timer and a first crystal switch tube; One end of the eighth resistor is connected to the eighth end of the cycle timer, the collector of the first crystal switch tube and the first end of the second capacitor, the base of the first crystal switch tube is connected to the anode of the third diode, the emitter of the first crystal switch tube is connected to the fourth end of the cycle timer, the third end of the cycle timer is connected to the fourth end of the intelligent controller and the sampling and holding module, the other end of the eighth resistor is connected to the anode of the first diode, the cathode of the second diode and the seventh end of the cycle timer, the cathode of the first diode is connected to one end of the fifth capacitor, the source of the first insulated gate field effect tube, the second end and the sixth end of the cycle timer through the seventh resistor, the anode of the second diode is connected to the drain of the first insulated gate field effect tube through the ninth resistor, the gate of the first insulated gate field effect tube is connected to the IO3 end of the intelligent controller, and the fifth end of the cycle timer is connected to the first end of the cycle timer, the other end of the fifth capacitor and the ground through the sixth capacitor.

5. The automatic regulating intelligent thermostat according to claim 4, characterized in that: The sampling and holding module includes a first operational amplifier, a first control tube, a fourth capacitor, a sixth resistor, a second operational amplifier and a fifth resistor; The non-inverting terminal of the first operational amplifier is connected to the sixth terminal of the first amplifier, the inverting terminal of the first operational amplifier is connected to the inverting terminal and the output terminal of the second operational amplifier through the fifth resistor, the non-inverting terminal of the second operational amplifier is connected to the source of the first control tube, the drain of the first control tube is connected to the non-inverting terminal of the second operational amplifier and is grounded through the fourth capacitor and the sixth resistor in sequence, and the gate of the first control tube is connected to the third terminal of the cycle timer.

6. The automatic regulating intelligent thermostat according to claim 5, characterized in that: The temperature change detection module includes a fifteenth resistor, a sixteenth resistor, a third operational amplifier, a seventeenth resistor, a tenth resistor, a second potentiometer, a third potentiometer, a fourth diode and a signal transmission device; The inverting end of the third operational amplifier is connected to one end of the seventeenth resistor and is connected to the output end of the second operational amplifier through the fifteenth resistor, the non-inverting end of the third operational amplifier is connected to one end of the tenth resistor and is connected to the sixth end of the first amplifier through the sixteenth resistor, the output end of the third operational amplifier is connected to the other end of the seventeenth resistor, one end of the third potentiometer and one end of the second potentiometer, the other end and the slider end of the third operational amplifier are both connected to the cathode of the fourth diode, the anode of the fourth diode is connected to the IO5 end of the intelligent controller and the CTRL end of the signal transmission device, the IN end of the signal transmission device is connected to the slider end of the second potentiometer, the other end of the second potentiometer and the other end of the tenth resistor are both grounded, and the OUT end of the signal transmission device is connected to the base of the second crystal switch tube.

7. The automatic regulating intelligent thermostat according to claim 6, characterized in that: The temperature adjustment module includes a first thyristor, an eleventh resistor, a twelfth resistor, a seventh capacitor, a bidirectional optocoupler, a second insulated gate field effect transistor, a fourteenth resistor, a second crystal switch tube, a thirteenth resistor and a second voltage stabilization source; One end of the first thyristor is connected to the first end of the power interface and is connected to one end of the seventh capacitor and one end of the twelfth resistor through an eleventh resistor, the other end of the twelfth resistor is connected to the first input end of the bidirectional optocoupler, the first output end of the bidirectional optocoupler is connected to the control end of the first thyristor, the first end of the heater is connected to the second end of the power interface, the other end of the first thyristor is connected to the other end of the seventh capacitor and the second end of the heater, the second input end of the bidirectional optocoupler is connected to the IO2 end of the first control, the second output end of the bidirectional optocoupler is connected to the drain of the second insulated gate field effect transistor, the gate of the second insulated gate field effect transistor is connected to the collector of the second crystal switch tube and is connected to the second voltage stabilizing source through a thirteenth resistor, the emitter of the second crystal switch tube is connected to the source of the second insulated gate field effect tube and the ground through a fourteenth resistor, and the base of the second crystal switch tube is connected to the OUT end of the signal transmission device.

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