CN208888674U - A kind of heating apparatus - Google Patents
A kind of heating apparatus Download PDFInfo
- Publication number
- CN208888674U CN208888674U CN201821930679.4U CN201821930679U CN208888674U CN 208888674 U CN208888674 U CN 208888674U CN 201821930679 U CN201821930679 U CN 201821930679U CN 208888674 U CN208888674 U CN 208888674U
- Authority
- CN
- China
- Prior art keywords
- heating
- amplifier
- hysteresis comparator
- heating apparatus
- comparator circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Resistance Heating (AREA)
Abstract
The utility model discloses a kind of heating apparatus, including Switching Power Supply, four tunnels of output end point of the Switching Power Supply: the sequentially connected DC-DC power source of the first via, single-chip microcontroller, metal-oxide-semiconductor switch controller, voltage regulator circuit, hysteresis comparator circuit, heating control pipe, heating coil；Second tunnel is sequentially connected current-limiting resistance, voltage regulator circuit；Third road is sequentially connected heating control pipe, heating coil；4th tunnel connects metal-oxide-semiconductor switch controller；The output end of the metal-oxide-semiconductor switch controller is also connect with heating coil, the output end of the voltage regulator circuit is also connected with temperature sensor, amplifier in-phase end in hysteresis comparator circuit connects reference voltage, temperature sensor is connected to the reverse input end of the amplifier in hysteresis comparator circuit, and the output end of the amplifier in hysteresis comparator circuit is connected to the in-phase end of amplifier by feedback resistance.The utility model heats coil and does not need to provide ground wire from system using PWM square wave as the virtual earth of voltage regulator circuit.
Description
Technical field
The utility model relates to field of medical device, in particular to a kind of heating apparatus.
Background technique
Equipment with heating apparatus will usually heat power supply line and working grounding cable needed for coil, in addition temperature sensor
Required power supply and temperature sensor connection, line required for complete equipment is more, and processing technology is more troublesome, and goes out
The probability now to break increases.
Therefore, for have heating function equipment, how with less connecting line realization heating function, be particularly useful
's.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the prior arts and deficiency, provide a kind of heating apparatus, PWM square wave
As the virtual earth of voltage regulator circuit, heats coil and do not need to provide ground wire from system.
The purpose of this utility model is realized by the following technical solution:
A kind of heating apparatus, including Switching Power Supply, four tunnels of output end point of the Switching Power Supply: the first via is sequentially connected
DC-DC power source, single-chip microcontroller, metal-oxide-semiconductor switch controller, voltage regulator circuit, hysteresis comparator circuit, heating control pipe, heating coil；The
Two tunnels are sequentially connected current-limiting resistance, (this road is to generate power supply to provide electricity to temperature sensor and hysteresis comparator circuit to voltage regulator circuit
Source DC12V)；Third road is sequentially connected heating control pipe, heating coil；4th tunnel connects metal-oxide-semiconductor switch controller；The MOS
The output end of pipe switch controller is also connect with heating coil, and the output end of the voltage regulator circuit is also connected with temperature sensor,
Amplifier in-phase end in hysteresis comparator circuit connects reference voltage, and temperature sensor is connected to the reversed of the amplifier in hysteresis comparator circuit
The output end of input terminal, the amplifier in hysteresis comparator circuit is connected to the in-phase end of amplifier by feedback resistance.
The DC-DC power source is connected to the VCC of single-chip microcontroller, and the DC-DC power source uses LM2576-ADJ module.
The single-chip microcontroller includes common 51 chip, ARM chip.
The model of the metal-oxide-semiconductor switch controller includes IRF540, LL024N.
The resistance value of the current-limiting resistance is 1000 ohm.
The voltage regulator circuit is made of zener diode and capacitor, the model BZT52C12 of the zener diode.Electricity
Appearance parameter is 1uF.
The model of the heating control pipe includes triode S9012, BC857.
The hysteresis comparator circuit uses amplifier LM393 module.
The temperature sensor uses thermistor MTG1395F103F.
The heating coil is silicone rubber heating line.Its resistance is 100 ohm.
The working principle of the utility model is as follows:
Switching Power Supply provides DC24V, and DC24V is by DC-DC power source, voltage 3.3V needed for generating single-chip microcontroller work；It is single
The PWM mouth of piece machine generates control signal to the control terminal of metal-oxide-semiconductor switching circuit, and metal-oxide-semiconductor switch controller generates a 0V~24V
PWM square wave；PWM square wave is connected to heating coil all the way, as a control line of heating coil, adjusts PWM value, realizes heating
Reach different rate of warming；PWM square wave another way is connected to voltage regulator circuit, the virtual earth as voltage regulator circuit；The source of voltage regulator circuit
Voltage is coupled to the cathode of voltage-stabiliser tube from Switching Power Supply 24V behind 1000 Europe of current-limiting resistance, and the anode of voltage-stabiliser tube is even
To PWM square wave, virtual earth of the PWM square wave as voltage regulator circuit at this time；Voltage regulator circuit provides DC12V to temperature sensor and sluggish ratio
Compared with circuit；Amplifier in-phase end in hysteresis comparator circuit connects reference voltage, and temperature sensor is connected to the reverse input end of amplifier, fortune
The output end put is connected to the in-phase end of amplifier by feedback resistance 100K, guarantees the stability of heating circuit work, adds when normal
Wen Shi, the collected voltage of temperature sensor compare with reference voltage, and amplifier exports low level, i.e. hysteresis comparator circuit output is low
Level, heating control pipe conducting, 24V are communicated to heating coil, and heating coil normally heats, when heating coil is warmed to alarm temperature
When spending, the collected voltage of temperature sensor compares with reference voltage, and amplifier exports high level, i.e. hysteresis comparator circuit output is high
Level, heating control pipe cut-off, 24V are not communicated to heating coil, and heating coil stops heating.It is sluggish more electric due to using
Road, in this start process, even if heating coil temperature drops to 25 degree, since the lockover of hysteresis comparator circuit is with reference to electricity
It is flat, so that output is always maintained at high level, or else will do it heating work, into heating protected mode, unless power-off weight again
New booting.Demand of the single-chip microcontroller according to user to rate of warming, single-chip microcontroller provide corresponding PWM, and PWM square wave is connected to heating wire
Circle realizes the control of rate of warming, to realize a kind of heating apparatus as the control terminal of heating coil.
The utility model compared with prior art, is had the following advantages and beneficial effects:
The utility model realizes that heating and heating defencive function, the ground wire for heating control module are not required to less connecting line
It wants system to be provided separately, realizes that the mode of virtual earth is realized by heating control line.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of heating apparatus described in the utility model.
Specific embodiment
The present invention will be further described in detail with reference to the embodiments and the accompanying drawings, but the implementation of the utility model
Mode is without being limited thereto.
Such as Fig. 1, a kind of heating apparatus, including Switching Power Supply, four tunnels of output end point of the Switching Power Supply: the first via is successively
The DC-DC power source of connection, single-chip microcontroller, metal-oxide-semiconductor switch controller, voltage regulator circuit, hysteresis comparator circuit, heating control pipe, heating
Coil；Second tunnel is sequentially connected current-limiting resistance, (this road is to generate power supply to temperature sensor and hysteresis comparator circuit to voltage regulator circuit
There is provided power supply DC12V)；Third road is sequentially connected heating control pipe, heating coil；4th tunnel connects metal-oxide-semiconductor switch controller；Institute
The output end for stating metal-oxide-semiconductor switch controller is also connect with heating coil, and the output end of the voltage regulator circuit is also connected with temperature biography
Sensor, the amplifier in-phase end in hysteresis comparator circuit connect reference voltage, and temperature sensor is connected to the amplifier in hysteresis comparator circuit
Reverse input end, the output end of the amplifier in hysteresis comparator circuit is connected to the in-phase end of amplifier by feedback resistance.
The DC-DC power source is connected to the VCC of single-chip microcontroller, and the DC-DC power source uses LM2576-ADJ module.
The single-chip microcontroller includes common 51 chip, ARM chip.
The model of the metal-oxide-semiconductor switch controller includes IRF540, LL024N.
The resistance value of the current-limiting resistance is 1000 ohm.
The voltage regulator circuit is made of zener diode and capacitor, the model BZT52C12 of the zener diode.Electricity
Appearance parameter is 1uF.
The model of the heating control pipe includes triode S9012, BC857.
The hysteresis comparator circuit uses amplifier LM393 module.
The temperature sensor uses thermistor MTG1395F103F.
The heating coil is silicone rubber heating line.Its resistance is 100 ohm.
The working principle of the utility model is as follows:
Switching Power Supply provides DC24V, and DC24V is by DC-DC power source, voltage 3.3V needed for generating single-chip microcontroller work；It is single
The PWM mouth of piece machine generates control signal to the control terminal of metal-oxide-semiconductor switching circuit, and metal-oxide-semiconductor switch controller generates a 0V~24V
PWM square wave；PWM square wave is connected to heating coil all the way, as a control line of heating coil, adjusts PWM value, realizes heating
Reach different rate of warming；PWM square wave another way is connected to voltage regulator circuit, the virtual earth as voltage regulator circuit；The source of voltage regulator circuit
Voltage is coupled to the cathode of voltage-stabiliser tube from Switching Power Supply 24V behind 1000 Europe of current-limiting resistance, and the anode of voltage-stabiliser tube is even
To PWM square wave, virtual earth of the PWM square wave as voltage regulator circuit at this time；Voltage regulator circuit provides DC12V to temperature sensor and sluggish ratio
Compared with circuit；Amplifier in-phase end in hysteresis comparator circuit connects reference voltage, and temperature sensor is connected to the reverse input end of amplifier, fortune
The output end put is connected to the in-phase end of amplifier by feedback resistance 100K, guarantees the stability of heating circuit work, adds when normal
Wen Shi, the collected voltage of temperature sensor compare with reference voltage, and amplifier exports low level, i.e. hysteresis comparator circuit output is low
Level, heating control pipe conducting, 24V are communicated to heating coil, and heating coil normally heats, when heating coil is warmed to alarm temperature
When spending, the collected voltage of temperature sensor compares with reference voltage, and amplifier exports high level, i.e. hysteresis comparator circuit output is high
Level, heating control pipe cut-off, 24V are not communicated to heating coil, and heating coil stops heating.It is sluggish more electric due to using
Road, in this start process, even if heating coil temperature drops to 25 degree, since the lockover of hysteresis comparator circuit is with reference to electricity
It is flat, so that output is always maintained at high level, or else will do it heating work, into heating protected mode, unless power-off weight again
New booting.Demand of the single-chip microcontroller according to user to rate of warming, single-chip microcontroller provide corresponding PWM, and PWM square wave is connected to heating wire
Circle realizes the control of rate of warming, to realize a kind of heating apparatus as the control terminal of heating coil.
It should be noted that above-mentioned working principle is to further illustrate the utility model using the trend of signal as clue
A kind of connection relationship of each building block of the heating apparatus, make those skilled in the art when implementing the utility model more
It is clear, conveniently to add, but the improvement for not representing the technical solution of the utility model is on software, the technology of the utility model
The improvement of scheme is in the overall architecture of whole device, although technical solution is related to single-chip microcontroller and other controllers,
But what it was executed is all routine operation, and component selected by the utility model is also that existing component (also gives specific
Model), the improvement of the technical solution of the utility model is how these existing components are built into a device,
It creates point to be in structure, therefore is the protection object for belonging to utility model patent.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (10)
1. a kind of heating apparatus, it is characterised in that: including Switching Power Supply, four tunnels of output end point of the Switching Power Supply: the first via
Sequentially connected DC-DC power source, single-chip microcontroller, metal-oxide-semiconductor switch controller, voltage regulator circuit, hysteresis comparator circuit, heating control pipe,
Heat coil；Second tunnel is sequentially connected current-limiting resistance, voltage regulator circuit；Third road is sequentially connected heating control pipe, heating coil；The
Four tunnels connect metal-oxide-semiconductor switch controller；The output end of the metal-oxide-semiconductor switch controller is also connect with heating coil, the pressure stabilizing
The output end of circuit is also connected with temperature sensor, and the amplifier in-phase end in hysteresis comparator circuit connects reference voltage, temperature sensing
Device is connected to the reverse input end of the amplifier in hysteresis comparator circuit, and the output end of the amplifier in hysteresis comparator circuit passes through feedback electricity
Resistance is connected to the in-phase end of amplifier.
2. heating apparatus according to claim 1, it is characterised in that: the DC-DC power source is connected to the VCC of single-chip microcontroller, described
DC-DC power source uses LM2576-ADJ module.
3. heating apparatus according to claim 1, it is characterised in that: the single-chip microcontroller includes common 51 chip, ARM chip.
4. heating apparatus according to claim 1, it is characterised in that: the model of the metal-oxide-semiconductor switch controller includes
IRF540、LL024N。
5. heating apparatus according to claim 1, it is characterised in that: the resistance value of the current-limiting resistance is 1000 ohm.
6. heating apparatus according to claim 1, it is characterised in that: the voltage regulator circuit is by zener diode and capacitance group
At the model BZT52C12 of the zener diode.
7. heating apparatus according to claim 1, it is characterised in that: the model of the heating control pipe includes triode
S9012、BC857。
8. heating apparatus according to claim 1, it is characterised in that: the hysteresis comparator circuit uses amplifier LM393 module.
9. heating apparatus according to claim 1, it is characterised in that: the temperature sensor uses thermistor
MTG1395F103F。
10. heating apparatus according to claim 1, it is characterised in that: the heating coil is silicone rubber heating line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930679.4U CN208888674U (en) | 2018-11-22 | 2018-11-22 | A kind of heating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930679.4U CN208888674U (en) | 2018-11-22 | 2018-11-22 | A kind of heating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208888674U true CN208888674U (en) | 2019-05-21 |
Family
ID=66518497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821930679.4U Active CN208888674U (en) | 2018-11-22 | 2018-11-22 | A kind of heating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208888674U (en) |
-
2018
- 2018-11-22 CN CN201821930679.4U patent/CN208888674U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206602453U (en) | The starting protection circuit of DC DC modular power sources | |
| CN102005718A (en) | Protector for electronic load and electronic load system | |
| CN208539785U (en) | A kind of negative voltage regulator circuit | |
| CN107359786A (en) | A kind of soft starting circuit for Switching Power Supply | |
| CN206751392U (en) | A kind of medical molecular sieve central oxygen machine oxygen-supplying amount regulating system | |
| CN208888674U (en) | A kind of heating apparatus | |
| CN105007668B (en) | LED light adjusting systems | |
| CN103872890B (en) | Switching power supply circuit with short-circuit protection function | |
| CN108613390A (en) | Remote control hot water apparatus based on wechat small routine | |
| CN204667623U (en) | Remote controller | |
| CN102920357A (en) | Working circuit of electronic oven | |
| CN202916554U (en) | Heater for uniformly heating irregular liquid crystal display | |
| CN204668646U (en) | A kind of Multifunction timed controls socket | |
| CN204835969U (en) | Relay control circuit during resistance -capacitance steps down | |
| CN107702298A (en) | It is provided with the air cooler intelligent power supply control system of triggering enhancing circuit | |
| CN207083011U (en) | A kind of soft starting circuit for Switching Power Supply | |
| CN201877787U (en) | Three-phase power detection protection circuit for ecological house | |
| CN201878385U (en) | Automatic dimming circuit of ecological house | |
| CN208782477U (en) | Anti- bonding circuit and intelligent socket when a kind of relay control capacitive load | |
| CN201449566U (en) | Electronic intelligent temperature controller | |
| CN201878082U (en) | Brush motor control circuit of ecological house | |
| CN203759562U (en) | Water temperature control system | |
| CN202981667U (en) | Working circuit of electric oven | |
| CN104456863B (en) | Humidifier and control method and circuit thereof | |
| CN201878008U (en) | Driving circuit with adjustable power supply for ecological room |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |