CN110825137A - Triple protection intelligent fire box temperature controller - Google Patents
Triple protection intelligent fire box temperature controller Download PDFInfo
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- CN110825137A CN110825137A CN201911217630.3A CN201911217630A CN110825137A CN 110825137 A CN110825137 A CN 110825137A CN 201911217630 A CN201911217630 A CN 201911217630A CN 110825137 A CN110825137 A CN 110825137A
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 58
- 239000010703 silicon Substances 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 230000006698 induction Effects 0.000 claims abstract description 24
- 230000011664 signaling Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
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- Automation & Control Theory (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a triple-protection intelligent fire box temperature controller, which comprises a heating device for converting electric energy of an external power supply into heat energy; the circuit breaker and the silicon controlled chip are used for controlling the power-on and power-off of the heating device; the temperature sensor is used for identifying and acquiring temperature information of heat energy generated by the heat generating device; the face recognition camera is used for recognizing a human face which generates an induction signal when a human body is in a preset position range; the microprocessor is used for acquiring the temperature information and the induction signal, controlling the relay and the silicon controlled chip to act according to the temperature digital information and the induction signal and a preset program rule; and the resistance-capacitance voltage reduction circuit is used for reducing the voltage of the alternating current of the external power supply and converting the alternating current into direct current so as to supply power to the microprocessor, the relay, the silicon controlled rectifier chip and the face recognition camera, and the indicating lamp. Compared with the related technology, the triple protection intelligent fire box temperature controller has good safety and reliability and saves energy.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of electronic devices, and particularly relates to an intelligent fire box temperature controller with triple protection.
[ background of the invention ]
The intelligent temperature controller which takes a single chip microcomputer as a central processing unit appears in the conventional birdcage type warmer and an electric fire box.
For example, regard as the intelligent temperature controller of switching device with the relay, its control circuit is simple, but the relay has the rack life-span, and probably the contact back appears, and the butt fusion is in the same place, and unable normal bounce leads to the fact the potential safety hazard.
For another example, the silicon controlled rectifier chip is used as an intelligent temperature controller of the relay, the service life is long, the control is simple, but after the silicon controlled rectifier chip is broken down, the temperature cannot be controlled, and the potential safety hazard can be caused.
Therefore, there is a need to provide a new triple protection intelligent fire box temperature controller to overcome the above technical problems.
[ summary of the invention ]
The invention aims to provide a triple-protection intelligent fire box temperature controller with good safety and reliability.
In order to solve the technical problem, the invention provides a triple protection intelligent fire box temperature controller, which comprises:
the heating device is used for converting electric energy of an external power supply into heat energy;
the relay connects the heating device with an external power supply and is used for controlling the power-on and power-off of the heating device;
the controllable silicon chip is connected in series between the relay and the heating device and is used for controlling the power-on and power-off of the heating device;
the face recognition camera is over against a preset position range which takes the triple-protection intelligent fire box temperature controller as a center, and is used for recognizing that an induction signal is generated when a person is in the preset position range;
the temperature sensor is used for identifying and acquiring temperature information of heat energy generated by the heat generating device;
the microprocessor is respectively connected with the temperature sensor, the relay, the silicon controlled chip and the face recognition camera and is used for acquiring the temperature information and the induction signal and controlling the relay and the silicon controlled chip to act according to the temperature information and the induction signal and a preset program rule;
the resistance-capacitance voltage reduction circuit is connected with an external power supply and used for reducing the alternating current of the external power supply and converting the alternating current into direct current so as to supply power to the microprocessor, the relay, the silicon controlled rectifier chip and the face recognition camera; and the number of the first and second groups,
and the indicating lamp is electrically connected with the microprocessor, and the microprocessor controls the indicating lamp to work according to the working conditions of the relay and the silicon controlled rectifier chip and a preset rule.
Preferably, the heating device is a resistance wire or a heating sheet.
Preferably, the microprocessor is an SN2711-8 single chip microcomputer.
Preferably, the temperature sensor is a negative temperature coefficient thermistor.
Preferably, when the microprocessor identifies that the temperature information is greater than a first threshold temperature, the microprocessor controls the silicon controlled chip to turn off a power supply of the heating device; when the microprocessor identifies that the temperature information is greater than a second threshold temperature, the microprocessor controls the relay to turn off the power supply of the heating device; wherein the first threshold temperature is less than the second threshold temperature.
Preferably, the first threshold temperature is 45 ℃ and the second threshold temperature is 75 ℃.
Preferably, after receiving the induction signal, the microprocessor controls the relay to be powered on in an attracting mode, and simultaneously controls the silicon controlled chip to be powered on and last for a first preset time; after the microprocessor times the time exceeds a first preset time and does not receive the induction signal again within the first preset time, the microprocessor controls the silicon controlled chip to close and power off; and after the microprocessor controls the silicon controlled chip to be turned off and power off, the microprocessor does not receive the induction signal again within second preset time, and then controls the relay to be powered off.
Preferably, the first preset time is 5-10 minutes, and the second preset time is 30-60 minutes.
Compared with the prior art, the triple protection intelligent fire box temperature controller drives the relay and the silicon controlled rectifier chip according to the preset rule through the microprocessor to control the temperature of the heating device, and controls the silicon controlled rectifier chip to turn off the power supply of the heating device if the temperature exceeds the first threshold value, so that the occurrence of fire is avoided, the safety and the reliability are improved, the silicon controlled rectifier chip and the relay are electrified simultaneously, and the silicon controlled rectifier chip is used as a switch to form first double protection; when the silicon controlled chip fails and the temperature continues to rise to a second threshold temperature, the relay is controlled to be turned off and power off, complete power off is realized, second protection is formed, and safety and reliability are further improved; in addition, the microprocessor receives the induction signal to drive the relay and the silicon controlled chip to jointly control the working time of the heating device, so that the working time control of the heating device after people leave is realized, and the third protection is formed, on one hand, the fire caused by the fact that people leave and are not powered off is avoided, the safety and the reliability are effectively improved, and meanwhile, the purposes of power-off and energy saving are also realized.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a block diagram of a triple protection intelligent fire box temperature controller according to an embodiment of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a triple protection intelligent fire box temperature controller 100, comprising: heating device 1, relay 2, silicon controlled chip 3, face identification camera 4, temperature sensor 5, microprocessor 6, resistance-capacitance step-down circuit 7 and pilot lamp 8.
The heating device 1 is used for converting electric energy of an external power supply (e.g., commercial power) into heat energy after being connected with the external power supply. In this embodiment, the heating device 1 is a resistance wire or a heating sheet.
The relay 2 connects the heating device 1 with an external power supply and is used for controlling the electrification and the outage of the heating device 1. In the present embodiment, the relay 2 is a commercially available conventional relay, and may be used as it is.
The silicon controlled chip 3 is connected in series between the relay 2 and the heating device 1 and is used for controlling the power-on and power-off of the heating device 1.
The face recognition camera 4 is right opposite to a preset position range taking the triple-protection intelligent fire box temperature controller as a center and is used for recognizing that a sensing signal is generated when a person is in the preset position range. In this embodiment, the face recognition camera generates an induction signal if it recognizes that a moving object exists, such as a high level. The face recognition camera 4 is a product sold in the market at present and can be directly used. When the face recognition camera 4 is used, a face can be input in advance, and when the recognized face does not accord with the input face information, no induction signal can be generated. Use face identification camera 4 further can improve the control accuracy, for example when having the pet near the electric fire case in the family, then can not produce the sensing signal simultaneously, can only produce the sensing signal when the people has to be close to.
The temperature sensor 5 is used for identifying and acquiring temperature information of heat energy generated by the heating device 1. For example, the temperature at the preset position is recognized in real time by the temperature sensor 5.
In this embodiment, the temperature sensor 5 employs a negative temperature coefficient thermistor (NTC), and its operating principle is to collect temperature information and then transfer the temperature to a resistance value, and transfer the real-time voltage to the microprocessor through a voltage dividing circuit.
The microprocessor 6 is respectively connected with the temperature sensor 5, the relay 2, the silicon controlled chip 3 and the face recognition camera 4 and is used for collecting the temperature information and the induction signal and controlling the action of the relay 2 and the silicon controlled chip 3 according to the temperature information and the induction signal and a preset program rule.
For example, in the embodiment, a SN2711-8 single chip microcomputer of john is used as the main control MCU microprocessor, the temperature information is converted into digital information through an analog-to-digital conversion IO port, a temperature control rule (such as a preset threshold temperature) and a time control rule (such as a preset time) are written in a program by programming, and the power-on and power-off of the heating device 1 are controlled according to the preset rule by the degree.
The resistance-capacitance voltage reduction circuit 7 is connected with an external power supply and used for reducing the voltage of the alternating current of the external power supply and converting the alternating current into direct current so as to supply power to the microprocessor 6, the relay 2, the silicon controlled chip 3 and the face recognition camera 4.
In this embodiment, the rc step-down circuit 7 is formed by a CBB capacitor and a resistor, and converts 220V ac power of an external power supply into 12V or 5V dc power.
It should be noted that, in the present invention, the heating device 1, the relay 2, the silicon controlled chip 3, the face recognition camera 4, the temperature sensor 5, the microprocessor 6, the resistance-capacitance voltage reduction circuit 7, and the indicator light 8 are all conventional electronic devices.
The preset rules in the microprocessor 6 include:
and when the microprocessor 6 identifies that the temperature information is greater than the first threshold temperature, the silicon controlled chip 3 is controlled to turn off the power supply of the heating device 1. Specifically, a trigger pin G pole of the silicon controlled chip 3 is input with a low level, so that the silicon controlled chip 3 is turned off and is powered off.
And when the microprocessor 6 identifies that the temperature information is greater than a second threshold temperature, the relay 4 is controlled to turn off the power supply of the heating device 1. Wherein the first threshold temperature is less than the second threshold temperature. For example, in the present embodiment, the first threshold temperature is 45 ℃ and the second threshold temperature is 75 ℃. Of course, not limited thereto.
In the control, the silicon controlled chip 3 realizes first heavy protection; when the silicon controlled rectifier 3 is broken down by a short circuit or the silicon controlled rectifier 3 is overheated due to overhigh temperature and cannot be normally closed, the temperature of the electric fire box rises uncontrollably, under the condition, a first threshold temperature is set, once the temperature sensor 5 identifies that the temperature reaches the first threshold temperature, the microprocessor 6 disconnects the relay 2, so that the possibility that the temperature does not rise any more and a fire disaster occurs is achieved, and secondary protection is achieved.
Preferably, after receiving the sensing signal, the microprocessor 6 controls the relay 2 to be powered on in an attracting mode, and controls the silicon controlled chip 3 to be powered on and continue for a first preset time. After the microprocessor 6 times the time exceeds the first preset time and does not receive the induction signal again within the first preset time, the silicon controlled chip 3 is controlled to be powered off; and after the microprocessor controls the silicon controlled chip 3 to be turned off and the power is cut off, the microprocessor does not receive the induction signal again within a second preset time, and then controls the relay 2 to be cut off, namely, the power is completely cut off, so that the third protection is realized.
In this embodiment, for example, the first preset time is set to be 5 to 10 minutes, and the second preset time is set to be 30 to 60 minutes.
In the above control, in the specific application, when a person is in the preset identification range of the face recognition camera 4, the face recognition camera 4 successfully recognizes the face, a high level is generated, and when the microprocessor 6 receives the high level, the relay 2 and the silicon controlled chip 3 are controlled to be connected and powered on for the first preset time, namely 5-10 minutes, and the sound generating device 1 generates heat for 5-10 minutes. If the microprocessor 6 does not receive the high level after the time, the silicon controlled chip 3 is disconnected and powered off, so that the heating device 1 does not heat any more.
If the silicon controlled chip 3 is closed for a second preset time, such as 30-60 minutes, taking 30 minutes as an example for illustration, in the time, the person again walks into the recognition area and is recognized by the face recognition camera 4 to generate a high level, the microprocessor controls the silicon controlled chip 3 to be connected and electrified after receiving the high level, so that the heating device 1 automatically continues to heat. If the time exceeds 30 minutes, the person is considered to leave for a long time if the person face is not recognized, the microprocessor 6 still does not receive the induction signal in the time, the silicon controlled chip 3 is controlled to be disconnected, and meanwhile the relay 2 is also controlled to be switched off, namely the whole product is switched off, so that the safety is ensured. Face identification camera 4 can effectually avoid moving object like the pet to move the conflagration hidden danger that the heating of circular telegram and cause when being close to the fire box by mistake, and fail safe nature is better.
It should be noted that, the relay 2 is powered on in an attracting mode, only one on-off action is needed in each heating process, no matter how long the heating duration is, the relay is powered on in an attracting mode, the relay is powered on in a disconnecting mode, the relay is powered off in a disconnecting mode, and after the relay 2 is powered on in an attracting mode, other disconnecting and connecting modes of the intermediate temperature control are all executed by the silicon controlled chip 3.
The indicator light 8 is electrically connected with the microprocessor 6, and the microprocessor 6 controls the indicator light 8 to work according to preset rules according to the working conditions of the relay 2 and the silicon controlled chip 3. For example, when microprocessor 6 control silicon controlled rectifier chip 3 and relay 2 all turn off the outage after, then send the instruction and give pilot lamp 8 makes pilot lamp 8 blink to remind the user fire box thoroughly to turn off, can not start through face identification camera 4 again, need restart triple protection intelligence fire box thermostat 100 again, in order to realize restarting. The indicator light 8 can be arranged on the face recognition camera 4 and also can be arranged at other prominent positions.
Compared with the prior art, the triple protection intelligent fire box temperature controller drives the relay and the silicon controlled rectifier chip according to the preset rule through the microprocessor to control the temperature of the heating device, and controls the silicon controlled rectifier chip to turn off the power supply of the heating device if the temperature exceeds the first threshold value, so that the occurrence of fire is avoided, the safety and the reliability are improved, the silicon controlled rectifier chip and the relay are electrified simultaneously, and the silicon controlled rectifier chip is used as a switch to form first double protection; when the silicon controlled chip fails and the temperature continues to rise to a second threshold temperature, the relay is controlled to be turned off and power off, complete power off is realized, second protection is formed, and safety and reliability are further improved; in addition, the microprocessor receives the induction signal to drive the relay and the silicon controlled chip to jointly control the working time of the heating device, so that the working time control of the heating device after people leave is realized, and the third protection is formed, on one hand, the fire caused by the fact that people leave and are not powered off is avoided, the safety and the reliability are effectively improved, and meanwhile, the purposes of power-off and energy saving are also realized.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a triple protection intelligence fire box thermostat which characterized in that includes:
the heating device is used for converting electric energy of an external power supply into heat energy;
the relay connects the heating device with an external power supply and is used for controlling the power-on and power-off of the heating device;
the controllable silicon chip is connected in series between the relay and the heating device and is used for controlling the power-on and power-off of the heating device;
the face recognition camera is over against a preset position range which takes the triple-protection intelligent fire box temperature controller as a center, and is used for recognizing that an induction signal is generated when a person is in the preset position range;
the temperature sensor is used for identifying and acquiring temperature information of heat energy generated by the heat generating device;
the microprocessor is respectively connected with the temperature sensor, the relay, the silicon controlled chip and the face recognition camera and is used for acquiring the temperature information and the induction signal and controlling the relay and the silicon controlled chip to act according to the temperature information and the induction signal and a preset program rule;
the resistance-capacitance voltage reduction circuit is connected with an external power supply and used for reducing the alternating current of the external power supply and converting the alternating current into direct current so as to supply power to the microprocessor, the relay, the silicon controlled rectifier chip and the face recognition camera; and the number of the first and second groups,
and the indicating lamp is electrically connected with the microprocessor, and the microprocessor controls the indicating lamp to work according to the working conditions of the relay and the silicon controlled rectifier chip and a preset rule.
2. The triple-protection intelligent fire box temperature controller according to claim 1, wherein the heating device is a resistance wire or a heating sheet.
3. The triple protection intelligent fire box temperature controller of claim 1, wherein the microprocessor is an SN2711-8 single chip microcomputer.
4. The triple-protection intelligent fire box temperature controller according to claim 1, wherein the temperature sensor is a negative temperature coefficient thermistor.
5. The triple-protection intelligent fire box temperature controller according to claim 1, wherein the microprocessor controls the silicon controlled chip to turn off the power supply of the heating device when recognizing that the temperature information is greater than a first threshold temperature; when the microprocessor identifies that the temperature information is greater than a second threshold temperature, the microprocessor controls the relay to turn off the power supply of the heating device; wherein the first threshold temperature is less than the second threshold temperature.
6. The triple-protection intelligent fire box temperature controller according to claim 5, wherein the first threshold temperature is 45 ℃ and the second threshold temperature is 75 ℃.
7. The triple-protection intelligent fire box temperature controller according to claim 5, wherein the microprocessor controls the relay to be powered on in an attraction mode and controls the silicon controlled chip to be powered on for a first preset time after receiving the induction signal; after the microprocessor times the time exceeds a first preset time and does not receive the induction signal again within the first preset time, the microprocessor controls the silicon controlled chip to close and power off; and after the microprocessor controls the silicon controlled chip to be turned off and power off, the microprocessor does not receive the induction signal again within second preset time, and then controls the relay to be powered off.
8. The triple-protection intelligent fire box temperature controller according to claim 7, wherein the first preset time is 5-10 minutes, and the second preset time is 30-60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911217630.3A CN110825137A (en) | 2019-12-03 | 2019-12-03 | Triple protection intelligent fire box temperature controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911217630.3A CN110825137A (en) | 2019-12-03 | 2019-12-03 | Triple protection intelligent fire box temperature controller |
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| CN110825137A true CN110825137A (en) | 2020-02-21 |
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| CN201911217630.3A Pending CN110825137A (en) | 2019-12-03 | 2019-12-03 | Triple protection intelligent fire box temperature controller |
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| CN109996118A (en) * | 2019-03-28 | 2019-07-09 | 深圳创维－Rgb电子有限公司 | A kind of control method of operating conditions of TV set, television set and storage medium |
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2019
- 2019-12-03 CN CN201911217630.3A patent/CN110825137A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742184A (en) * | 2008-11-07 | 2010-06-16 | 深圳Tcl新技术有限公司 | Energy-saving television set |
| CN102064812A (en) * | 2010-12-30 | 2011-05-18 | 广东盈科电子有限公司 | Inducing device for distinguishing person or object at close distance |
| CN202630236U (en) * | 2012-06-13 | 2012-12-26 | 彭大喜 | Constant temperature control device for indoor electric heater |
| CN102982822A (en) * | 2012-11-19 | 2013-03-20 | Tcl通力电子（惠州）有限公司 | Audio and video playing device and control method thereof |
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