CN216210569U - Control system of popcorn maker - Google Patents
Control system of popcorn maker Download PDFInfo
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- CN216210569U CN216210569U CN202122385292.3U CN202122385292U CN216210569U CN 216210569 U CN216210569 U CN 216210569U CN 202122385292 U CN202122385292 U CN 202122385292U CN 216210569 U CN216210569 U CN 216210569U
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Abstract
The utility model provides a control system for a popcorn maker, which comprises a control circuit, a switching circuit, a heater, a current detection circuit, a live wire and a zero wire, wherein the control circuit is connected with the heater; the control circuit is connected with the trigger end of the switch circuit, one end of the switch circuit is connected with the input end of the zero line of the heater, the other end of the switch circuit is connected with the zero line, and the input end of the live line of the heater is connected with the live line; the current detection circuit comprises an amplifying circuit and a sampling circuit, wherein the amplifying circuit is used for sampling the input voltage of the heater and triggering the sampling circuit to be electrified, and the electrified sampling circuit is used for outputting a sampling pulse signal to the control circuit, so that the control circuit outputs a control signal for switching on or switching off the switching circuit according to the sampling pulse signal. According to the utility model, the current detection circuit for collecting the input current pulse signal is arranged in the system, so that the input condition of the heater of the corn popper is monitored in real time, and the heater or the control system is prevented from being damaged due to abnormal input current.
Description
Technical Field
The utility model relates to the technical field of popcorn maker, in particular to a control system of a popcorn maker.
Background
Popcorn is crispy and easily digestible, can be used as daily tasty snacks, and is more and more consumed by people. Currently, commercially available popcorn makers are largely classified into manually attended types of popcorn makers such as commercial large-sized popcorn makers, single-pot popcorn makers, double-pot popcorn makers, and big-gun hand-operated popcorn makers. The preparation of popcorn requires special care. In order to produce a sufficient number of uniformly cooked popcorn kernels, all kernels must be uniformly heated, but the existing popcorn makers are not fully equipped with over-temperature detection and protection functions, which are dangerous during the continuous heating of the popcorn.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide a popcorn maker control system that solves one or more of the problems of the prior art, at least providing a useful alternative or creation.
The utility model provides a control system for a popcorn maker, which comprises a control circuit, a switching circuit, a heater, a current detection circuit, a live wire and a zero wire, wherein the control circuit is connected with the heater;
the control circuit is connected with the trigger end of the switch circuit, the control circuit is used for controlling the switch circuit to be switched on or switched off, one end of the switch circuit is connected with the zero line input end of the heater, the other end of the switch circuit is connected with the zero line, and the live wire input end of the heater is connected with the live wire;
the current detection circuit comprises an amplifying circuit and a sampling circuit, wherein the input end of the amplifying circuit is connected with the live wire input end of the heater, one end of the sampling circuit obtains electricity from the live wire, the other end of the sampling circuit is connected with the control circuit, the output end of the amplifying circuit is connected with the trigger end of the sampling circuit, the amplifying circuit is used for sampling the input voltage of the heater and triggering the sampling circuit to be electrified, and the electrified sampling circuit is used for outputting a sampling pulse signal to the control circuit so that the control circuit outputs a control signal for switching on or switching off the switch circuit according to the sampling pulse signal.
Further, the amplifying circuit comprises a first amplifying sub-circuit and a second amplifying sub-circuit;
the first amplification sub-circuit comprises a first operational amplifier, a sampling resistor, a first resistor, a second resistor and a first diode, and the second amplification sub-circuit comprises a second operational amplifier, a third resistor, a fourth resistor, a fifth resistor and a first capacitor;
the positive input end of the first operational amplifier is connected with the live wire input end of the heater through a first resistor, the negative input end of the first operational amplifier is connected with the live wire, the sampling resistor is connected between the live wire and the live wire input end of the heater, the second resistor is connected with the negative feedback of the first operational amplifier, the anode of the first diode is connected with the output end of the first operational amplifier, and the cathode of the first diode is connected with the positive input end of the second operational amplifier;
the negative input end of the second operational amplifier is connected with the live wire through a third resistor, the fourth resistor is connected with the negative feedback of the second operational amplifier, the first capacitor is connected with the fourth resistor in parallel, and the output end of the second operational amplifier is connected with the sampling circuit through a fifth resistor.
Furthermore, the sampling circuit comprises a sampling optocoupler, a switch tube, a voltage regulator tube, a second diode, a first electrolytic capacitor and a sixth resistor;
the positive pole and the live wire of stabilivolt are connected, the negative pole of stabilivolt is connected with the positive pole of second diode, the one end and the one end of sixth resistance of second diode are connected, the other end and the positive pole of the diode of sampling opto-coupler of sixth resistance are connected, the negative pole of the diode of sampling opto-coupler is connected with the one end of switch tube, the other end and the live wire of switch tube are connected, the trigger end and amplifier circuit's of switch tube output are connected, the one end of the triode of sampling opto-coupler is connected with control circuit good direct current voltage respectively, the other end ground connection of the triode of sampling opto-coupler, the positive pole of first electrolytic capacitor is connected with the negative pole of second diode, the negative pole of first electrolytic capacitor is connected with the positive pole of stabilivolt.
Furthermore, the control system for the popcorn maker further comprises an input rectifying circuit, wherein the input end of the input rectifying circuit is connected with the live wire and the zero line, the output end of the input rectifying circuit is connected with the control circuit, and the input rectifying circuit is used for being connected with alternating current commercial power and outputting direct current voltage to the control circuit.
Furthermore, the control circuit comprises a key module and a microprocessor, the key module is connected with the microprocessor, and the microprocessor is connected with the switch circuit.
Furthermore, the control circuit also comprises an alarm module, and the microprocessor is connected with the alarm module.
Further, the microprocessor selects a PMS152 type chip.
Furthermore, the switch circuit comprises a driving array module and a plurality of relays, the input end of the driving array module is connected with the control circuit, the output end of the driving array module is connected with the electromagnetic end of each relay, and the switch end of one relay is connected between the zero line and the input end of the heater.
Further, the control system of the popcorn maker further comprises an illuminating lamp, a power motor, a heat dissipation fan and a heat preservation pipe, wherein the live wire is respectively connected with the illuminating lamp, the power motor, the heat dissipation fan and the heat preservation pipe, and the zero line is respectively connected with the illuminating lamp, the power motor, the heat dissipation fan and the heat preservation pipe through a switch end of a relay.
The utility model has the beneficial effects that: the system is provided with a current detection circuit for collecting input current pulse signals, so that the input condition of the heater of the popcorn machine is monitored in real time, and the heater or a control system is prevented from being damaged or even generating electricity utilization danger due to abnormal input current.
Drawings
Fig. 1 is a block diagram of a popcorn maker control system according to an embodiment.
Fig. 2 is a circuit schematic of the current sensing circuit of the embodiment of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be further described with reference to the embodiments and the accompanying drawings.
Fig. 1 is a block diagram of a popcorn maker control system according to an embodiment.
Referring to fig. 1, the control system for the popcorn maker includes a control circuit 100, a switching circuit 200, a heater 300, a current detection circuit 400, a live line L and a neutral line N, and can monitor the condition of an input current when the popcorn maker is controlled to make popcorn.
Specifically, the control circuit 100 is connected to the trigger end of the switch circuit 200, the control circuit 100 is configured to control the switch circuit 200 to be turned on or off, one end of the switch circuit 200 is connected to a zero line input end N1 of the heater 300, the other end of the switch circuit 200 is connected to a zero line N, and a live line input end L1 of the heater 300 is connected to a live line L; the current detection circuit 400 comprises an amplifying circuit 410 and a sampling circuit 420, wherein the input end of the amplifying circuit 410 is connected with the live wire input end L1 of the heater 300, one end of the sampling circuit 420 takes power from the live wire L, the other end of the sampling circuit 420 is connected with the control circuit 100, and the output end of the amplifying circuit 410 is connected with the trigger end of the sampling circuit 420. The amplifying circuit 410 is configured to sample an input voltage of the heater 300 and trigger the sampling circuit 420 to be powered on, and the powered sampling circuit 420 is configured to output a sampling pulse signal to the control circuit 100, so that the control circuit 100 outputs a control signal for turning on or off the switching circuit 200 according to the sampling pulse signal.
More specifically, the principle of the control system of the popcorn maker in this embodiment is as follows: the control system of the popcorn maker is powered on through a live wire L and a zero line N, the control circuit 100 outputs a control signal for conducting the switch circuit 200, the switch circuit 200 is conducted, the heater 300 is connected with alternating current commercial power and performs heating action, the amplifying circuit 410 of the current detection circuit 400 collects and amplifies alternating current input voltage of a live wire input end L1 of the heater 300 in real time, the sampling circuit 420 of the current detection circuit 400 obtains power from the live wire L in real time, because the voltages connected to the amplifying circuit 410 and the sampling circuit 420 are both from the live wire L, the signal output by the amplifying circuit 410 triggers the sampling point circuit and the sampling circuit 420 to generate sampling pulse signals synchronously, the triggered sampling point circuit outputs the sampling pulse signals to the control circuit 100, and the control circuit 100 judges whether the current input to the heater 300 is abnormal according to the signal amplitude and the pulse interval of the sampling pulse signals, if it is determined to be abnormal, the control circuit 100 outputs a control signal for turning off the switching circuit 200 to stop the operation of the heater 300.
The specific structure of the control system for the popcorn maker according to this embodiment will be further described below.
Fig. 2 is a circuit schematic of the current sensing circuit of the embodiment of fig. 1.
Referring to fig. 2, the amplifying circuit 410 of the present embodiment includes a first amplifying sub-circuit 411 and a second amplifying sub-circuit 412; the first amplifying sub-circuit 411 includes a first operational amplifier U1, a sampling resistor RS, a first resistor R1, a second resistor R2, and a first diode D1, and the second amplifying sub-circuit 412 includes a second operational amplifier U2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a first capacitor C1.
Specifically, the positive input end of the first operational amplifier U1 is connected with the live wire input end L1 of the heater 300 through a first resistor R1, the negative input end of the first operational amplifier U1 is connected with the live wire L, the sampling resistor RS is connected between the live wire L and the live wire input end L1 of the heater 300, the second resistor R2 is connected with the first operational amplifier U1 in a negative feedback manner, the anode of the first diode D1 is connected with the output end of the first operational amplifier U1, and the cathode of the first diode D1 is connected with the positive input end of the second operational amplifier U2; the negative input end of the second operational amplifier U2 is connected with the live wire L through a third resistor R3, a fourth resistor R4 is in negative feedback connection with the second operational amplifier U2, a first capacitor C1 is connected with the fourth resistor R4 in parallel, and the output end of the second operational amplifier U2 is connected with the sampling circuit 420 through a fifth resistor R5.
In this embodiment, the sampling resistor RS is a constantan wire. The signal sampled by the sampling resistor RS from the live input terminal L1 of the heater 300 has the capability of driving and triggering the trigger terminal of the sampling circuit 420 after the two-stage amplification of the first amplification sub-circuit 411 and the second amplification sub-circuit 412.
The sampling circuit 420 according to the embodiment includes a sampling optocoupler OC, a switching tube Q1, a voltage regulator ZD1, a second diode D2, a first electrolytic capacitor CE1, and a sixth resistor R6.
Specifically, the anode of the voltage regulator tube ZD1 is connected with the live wire L, the cathode of the voltage regulator tube ZD1 is connected with the anode of the second diode D2, one end of the second diode D2 is connected with one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected with the anode of the diode of the sampling optocoupler OC, the cathode of the diode of the sampling optocoupler OC is connected with one end of the switch tube Q1, the other end of the switch tube Q1 is connected with the live wire L, the trigger end of the switch tube Q1 is connected with the output end of the amplifying circuit 410, one end of the triode of the sampling optocoupler OC is respectively connected with the control circuit 100 through direct-current voltage, the other end of the triode of the sampling optocoupler OC is grounded, the anode of the first electrolytic capacitor CE1 is connected with the cathode of the second diode D2, and the cathode of the first electrolytic capacitor CE1 is connected with the anode of the voltage regulator tube ZD 1.
In this embodiment, the control system for popcorn maker further comprises an input rectification circuit 500, an input end of the input rectification circuit 500 is connected to the live line L and the zero line N, an output end of the input rectification circuit 500 is connected to the control circuit 100, and the input rectification circuit 500 is used for accessing the ac mains supply and outputting the dc voltage to the control circuit 100.
The control circuit 100 of the present embodiment includes a key module 110 and a microprocessor 120, wherein the key module 110 is connected to the microprocessor 120, and the microprocessor 120 is connected to the switch circuit 200. Wherein, the microprocessor 120 is a PMS152 type chip; the control circuit 100 further includes an alarm module 130, the microprocessor 120 is connected to the alarm module 130, and when the microprocessor 120 determines that the current of the heater 300 is abnormal, the microprocessor 120 triggers the alarm module 130 to alarm.
The switch circuit 200 described in this embodiment includes a driving array module 210 and a plurality of relays 220, an input end of the driving array module 210 is connected to the control circuit 100, an output end of the driving array module 210 is connected to an electromagnetic end of each relay 220, and a switch end of one relay 220 is connected between the neutral line N and the neutral line input end N1 of the heater 300.
In order to further enrich the functions of the control system of the popcorn maker, the control system of the popcorn maker further comprises an illuminating lamp 600, a power motor 700, a heat radiation fan 800 and a heat preservation pipe 900, wherein the illuminating lamp 600, the power motor 700, the heat radiation fan 800 and the heat preservation pipe 900 are respectively controlled by a microprocessor 120, a live wire L is respectively connected with the illuminating lamp 600, the power motor 700, the heat radiation fan 800 and the heat preservation pipe 900, and a zero wire N is respectively connected with the illuminating lamp 600, the power motor 700, the heat radiation fan 800 and the heat preservation pipe 900 through a switch end of a relay 220.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A control system of a popcorn maker is characterized by comprising a control circuit, a switch circuit, a heater, a current detection circuit, a live wire and a zero wire;
the control circuit is connected with the trigger end of the switch circuit, the control circuit is used for controlling the switch circuit to be switched on or switched off, one end of the switch circuit is connected with the input end of a zero line of the heater, the other end of the switch circuit is connected with the zero line, and the input end of a live wire of the heater is connected with the live wire;
the current detection circuit comprises an amplifying circuit and a sampling circuit, wherein the input end of the amplifying circuit is connected with the live wire input end of the heater, one end of the sampling circuit obtains electricity from the live wire, the other end of the sampling circuit is connected with the control circuit, the output end of the amplifying circuit is connected with the trigger end of the sampling circuit, the amplifying circuit is used for sampling the input voltage of the heater and triggering the sampling circuit to be electrified, and the sampling circuit is used for outputting sampling pulse signals to the control circuit so that the control circuit outputs control signals for switching on or switching off the switch circuit according to the sampling pulse signals.
2. The popcorn maker control system of claim 1, wherein the amplification circuit includes a first amplification sub-circuit and a second amplification sub-circuit;
the first amplification sub-circuit comprises a first operational amplifier, a sampling resistor, a first resistor, a second resistor and a first diode, and the second amplification sub-circuit comprises a second operational amplifier, a third resistor, a fourth resistor, a fifth resistor and a first capacitor;
the positive input end of the first operational amplifier is connected with the live wire input end of the heater through a first resistor, the negative input end of the first operational amplifier is connected with the live wire, the sampling resistor is connected between the live wire and the live wire input end of the heater, the second resistor is in negative feedback connection with the first operational amplifier, the anode of the first diode is connected with the output end of the first operational amplifier, and the cathode of the first diode is connected with the positive input end of the second operational amplifier;
the negative input end of the second operational amplifier is connected with the live wire through a third resistor, the fourth resistor is connected with the second operational amplifier in a negative feedback mode, the first capacitor is connected with the fourth resistor in parallel, and the output end of the second operational amplifier is connected with the sampling circuit through a fifth resistor.
3. The popcorn maker control system according to claim 1, wherein the sampling circuit includes a sampling optocoupler, a switching tube, a voltage regulator tube, a second diode, a first electrolytic capacitor, and a sixth resistor;
the positive pole of stabilivolt is connected with the live wire, the negative pole of stabilivolt is connected with the positive pole of second diode, the one end of second diode is connected with the one end of sixth resistance, the other end of sixth resistance is connected with the positive pole of the diode of sampling opto-coupler, the negative pole of the diode of sampling opto-coupler is connected with the one end of switch tube, the other end of switch tube is connected with the live wire, the trigger end of switch tube is connected with amplifier circuit's output, the one end of the triode of sampling opto-coupler is connected with the good direct current voltage of control circuit respectively, the other end ground connection of the triode of sampling opto-coupler, the positive pole of first electrolytic capacitor is connected with the negative pole of second diode, the negative pole of first electrolytic capacitor is connected with the positive pole of stabilivolt.
4. The popcorn maker control system according to claim 1, further comprising an input rectification circuit, wherein an input end of the input rectification circuit is connected to the live line and the neutral line, an output end of the input rectification circuit is connected to the control circuit, and the input rectification circuit is used for receiving an ac mains supply and outputting a dc voltage to the control circuit.
5. The popcorn maker control system of claim 1, wherein said control circuit includes a button module and a microprocessor, said button module being connected to said microprocessor, said microprocessor being connected to a switch circuit.
6. The popcorn maker control system of claim 5, wherein said control circuit further comprises an alarm module, said microprocessor being connected to said alarm module.
7. The popcorn maker control system of claim 5 or 6, wherein said microprocessor is a PMS152 chip.
8. The popcorn maker control system according to claim 1, wherein said switching circuit includes a drive array module and a plurality of relays, an input of said drive array module being connected to said control circuit, an output of said drive array module being connected to an electromagnetic terminal of each relay, a switching terminal of one of said relays being connected between the neutral line and the neutral line input of the heater.
9. The popcorn maker control system according to claim 8, further comprising an illumination lamp, a power motor, a heat dissipation fan, and a heat preservation pipe, wherein the live wire is connected to the illumination lamp, the power motor, the heat dissipation fan, and the heat preservation pipe, and the zero wire is connected to the illumination lamp, the power motor, the heat dissipation fan, and the heat preservation pipe through a switch end of a relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122385292.3U CN216210569U (en) | 2021-09-29 | 2021-09-29 | Control system of popcorn maker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122385292.3U CN216210569U (en) | 2021-09-29 | 2021-09-29 | Control system of popcorn maker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216210569U true CN216210569U (en) | 2022-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122385292.3U Active CN216210569U (en) | 2021-09-29 | 2021-09-29 | Control system of popcorn maker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216210569U (en) |
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2021
- 2021-09-29 CN CN202122385292.3U patent/CN216210569U/en active Active
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