CN208270643U - A kind of ac voltage detection circuit, equipment and food cooking machine - Google Patents
A kind of ac voltage detection circuit, equipment and food cooking machine Download PDFInfo
- Publication number
- CN208270643U CN208270643U CN201820540233.4U CN201820540233U CN208270643U CN 208270643 U CN208270643 U CN 208270643U CN 201820540233 U CN201820540233 U CN 201820540233U CN 208270643 U CN208270643 U CN 208270643U
- Authority
- CN
- China
- Prior art keywords
- voltage
- detection
- direct current
- unit
- component
- 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
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a kind of ac voltage detection circuits, comprising: the AC rectification is direct current, the direct current is sent to the rectification unit of detection unit by the alternating current for receiving isolated power supply output；The direct current is received, current limliting processing is carried out to the direct current, the detection unit of detection voltage is obtained according to current limliting treated direct current；The processing unit of the voltage of the alternating current is determined according to the detection voltage.The invention also discloses a kind of alternating voltage detection device and food cooking machines.
Description
Technical field
The utility model relates to voltage detecting technology more particularly to a kind of ac voltage detection circuits, equipment and food material
Reason machine.
Background technique
Currently, the household appliances such as soy bean milk making machine generally heat food by the way of heat-generating pipe heating, it is described
The heating power of heat-generating pipe is determined by operating voltage.Since the household appliances such as soy bean milk making machine generally all have anti-spilling structure, to meet
Safety standard, mostly uses greatly isolating switch power scheme, and this scheme causes the detection of the line voltage of input certain
It is difficult.
In the prior art, the household appliance does not have voltage detection unit generally, but relies on corresponding process control
Operation under various voltages；Alternatively, the household appliance carries out voltage detecting using voltage transformer, but due to the alternating current of input
Overtension, the requirement for voltage sensor is relatively high, and testing cost is larger.
Utility model content
In view of this, the utility model embodiment is intended to provide a kind of ac voltage detection circuit, equipment and food cooking
Machine.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
The utility model embodiment provides a kind of ac voltage detection circuit, and the circuit includes:
The AC rectification is direct current, the direct current is sent to by the alternating current for receiving isolated power supply output
The rectification unit of detection unit；
The direct current is received, current limliting processing is carried out to the direct current, treated that direct current is examined according to current limliting
Survey the detection unit of voltage；
The processing unit of the voltage of the alternating current is determined according to the detection voltage.
In above scheme, the detection unit, comprising: first assembly, the second component and third component；The first assembly
One end connect the rectification unit, the other end connects second component and the third component；
The detection voltage is described in the tie point output of the first assembly, second component and the third component
The voltage of current limliting treated direct current.
In above scheme, the first assembly, comprising: a resistance, alternatively, at least two series connections and/or parallel connection
The resistance of connection；
Second component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel；
The third component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel.
In above scheme, the processing unit, comprising: analog-to-digital conversion is carried out to the detection voltage, obtains the detection
The analog-digital converter of the digital signal of voltage；And
The voltage that the direct current before current limliting processing is determined according to the digital signal of the detection voltage, according to the limit
The voltage of the direct current before stream process determines the processor of the voltage of the alternating current.
In above scheme, the circuit, further includes: the filter that the direct current of rectification unit output is filtered
Wave unit.
In above scheme, the filter unit, comprising: the direct current of rectification unit output is filtered
First capacitor；
The filter unit, further includes: treated that direct current is filtered to the detection unit current limliting
Two capacitors.
In above scheme, the resistance value of the resistance value of the first assembly, the resistance value of second component and the third component
Ratio be 20:10:1.
In above scheme, the capacitance value range of the first capacitor is 1uF~10uF；
The capacitance value range of second capacitor is 1uF~10uF.
In above scheme, the rectification unit includes: diode；Described diode one end connects the isolated power supply, separately
One end connects the detection unit.
The utility model embodiment provides a kind of alternating voltage detection device, and the equipment includes: any of the above item institute
The ac voltage detection circuit stated.
The utility model embodiment provides a kind of food cooking machine, and the food cooking machine includes: any of the above item institute
The ac voltage detection circuit stated.
A kind of ac voltage detection circuit, equipment provided by the utility model embodiment and food cooking machine, comprising: connect
The AC rectification is direct current, the direct current is sent to detection unit by the alternating current for receiving isolated power supply output
Rectification unit；The direct current is received, current limliting processing is carried out to the direct current, treated that direct current is examined according to current limliting
Survey the detection unit of voltage；The processing unit of the voltage of the alternating current is determined according to the detection voltage.The utility model is real
The scheme for applying example offer obtains the lower detection voltage of voltage value by detection unit, through the processing unit according to
The voltage that detection voltage deduces the alternating current realizes the quick detection of alternating voltage on the basis of reducing testing cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of ac voltage detection circuit provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of another ac voltage detection circuit provided by the embodiment of the utility model.
Specific embodiment
In the utility model embodiment, ac voltage detection circuit, comprising: the alternating current of isolated power supply output is received, it will
The AC rectification is direct current, and the direct current is sent to the rectification unit of detection unit；The direct current is received, it is right
The direct current carries out current limliting processing, according to the detection unit of current limliting treated direct current obtains detection voltage；According to described
Detection voltage determines the processing unit of the voltage of the alternating current.
The utility model is further described in more detail below with reference to embodiment.
Fig. 1 is a kind of structural schematic diagram of ac voltage detection circuit provided by the embodiment of the utility model；Such as Fig. 1 institute
Show, the ac voltage detection circuit, comprising: rectification unit 101, detection unit 102 and processing unit 103；Wherein,
The AC rectification is direct current for receiving the alternating current of isolated power supply output by the rectification unit 101
The direct current is sent to the detection unit by electricity；
Specifically, the isolated power supply can use transformer, such as isolating transformer；The rectification unit may include:
Diode；
The AC rectification is direct current, by institute for receiving the alternating current of isolated power supply output by the diode
It states direct current and is sent to the detection unit.
The detection unit 102 carries out current limliting processing to the direct current, according to current limliting for receiving the direct current
Treated, and direct current obtains detection voltage；
Specifically, the detection unit, comprising: first assembly, the second component and third component；The one of the first assembly
End connects the rectification unit, and the other end connects second component and the third component；
The detection voltage is described in the tie point output of the first assembly, second component and the third component
The voltage of current limliting treated direct current.
Specifically, one end of the first assembly connects the rectification unit, that is, connects the anode of the diode, remembers
Do the first signaling point；The other end of the first assembly is separately connected second component and third component, the first assembly
The other end be denoted as second signal point, i.e., the described tie point, the detection unit exports the detection from the second signal point
Voltage.
Here, the first assembly, comprising: resistance, alternatively, at least two are connected in series and/or are connected in parallel
Resistance；
Second component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel；
The third component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel.
The processing unit 103, for determining the voltage of the direct current before current limliting processing according to the detection voltage,
The voltage of the direct current before being handled according to the current limliting determines the voltage of the alternating current.
Specifically, the processing unit 103, comprising: analog-digital converter and processor；Wherein,
The analog-digital converter obtains the number of the detection voltage for carrying out analog-to-digital conversion to the detection voltage
Signal；
The processor, for determining the direct current before current limliting processing according to the digital signal of the detection voltage
The voltage of voltage, the direct current before being handled according to the current limliting determines the voltage of the alternating current.
Specifically, the processor can preserve the resistance value of the first assembly, the resistance value of second component, institute
State the resistance value of third component；The processor can be according to the resistance value of the first assembly, resistance value of second component, described
The resistance value of third component and the detection voltage determine the voltage of the direct current before the current limliting processing.
Here, the ratio of the resistance value of the resistance value of the first assembly, the resistance value of second component and the third component
It can be 20:10:1.
Can also be preserved in the processor isolated power supply information (such as described isolated power supply use transformer
When, preserve the number of turns of the transformer), so that the processor can be according to the voltage of the direct current and the letter of transformer
Breath determines the voltage of the alternating current.
In practical applications, the processor can by central processing unit (CPU, Central Processing Unit),
Digital signal processor (DSP, Digital Signal Processor), micro-control unit (MCU, Microcontroller
Unit) or programmable gate array (FPGA, Field-Programmable Gate Array) is realized.
Specifically, the circuit, further includes: filter unit；
The filter unit, the direct current for exporting to the rectification unit are filtered.
Specifically, the filter unit, comprising: first capacitor, direct current for being exported to the rectification unit into
Row filtering processing；
The filter unit can also include: the second capacitor, for the detection unit current limliting treated direct current
It is filtered.
Here, the capacitance value range of the first capacitor is 1uF~10uF；The capacitance value range of second capacitor
For 1uF~10uF.
Fig. 2 is the structural schematic diagram of another ac voltage detection circuit provided by the embodiment of the utility model；Such as Fig. 2 institute
Show, the circuit, comprising: rectification unit, detection unit and processing unit；Wherein,
The rectification unit connects isolated power supply, and the isolated power supply is transformer, and the transformer is used to filter with prime
Wave capacitor forms filter circuit and provides energy for rear class；And energy is provided for pair side in off state.
Here, the front end of the transformer can connect the switching power supply using isolation scheme, the transformer pair
Electric main carries out power supply conversion, and the power supply for converting acquisition is supplied to back-end circuit.
Specifically, the rectification unit, comprising: diode D1, for receiving the alternating current of the transformer output, by institute
Stating AC rectification is direct current, and the direct current is sent to the detection unit.
Specifically, the detection unit carries out current limliting processing to the direct current for receiving the direct current, according to
Current limliting treated direct current obtains detection voltage；
Here, the detection unit, comprising: first assembly, the second component, third component；The first assembly includes the
One resistance R1, second component includes second resistance R2, and the third component includes 3rd resistor R3；The first resistor R1
One end (being denoted as the first signaling point) connect the anode of the diode D1, the other end of the first resistor R1 (is denoted as second
Signaling point) the connection second resistance R2 and 3rd resistor R3, the second resistance R2 other end connection circuit power supply electricity
It presses (VCC), the other end ground connection of the 3rd resistor R3；Here, the second signal point is that the processing unit is examined
Survey the port of voltage.
Specifically, the processing unit, comprising: analog-digital converter and processor；
The detection voltage is carried out analog-to-digital conversion, obtains institute by the analog-digital converter for acquiring the detection voltage
It states the digital signal of detection voltage and is sent to the processor；
The processor, for determining the direct current before current limliting processing according to the digital signal of the detection voltage
The voltage of voltage, the direct current before being handled according to the current limliting determines the voltage of the alternating current.
It should be noted that the processor is when circuit constructs, the processor is determining and saves the first resistor
Resistance value, the resistance value of the second resistance, the resistance value of the 3rd resistor；The processor can be according to the resistance of the first resistor
Value, the resistance value of the second resistance, the resistance value of the 3rd resistor and the detection voltage determine described straight before current limliting processing
The voltage of galvanic electricity.
Here, the information (the number of turns of such as transformer) that the transformer can also be pre-saved in the processor, from
And the transformer can determine the voltage of the alternating current according to the voltage of the direct current and the information of the transformer.
The processor can also connect a display unit, for showing the electricity of the detection voltage, the direct current
The variation of the voltage value of pressure and/or the alternating current.
Specifically, the circuit can also include: filter unit；
The filter unit may include: capacitor C1, and the direct current for exporting to the diode D1 is filtered place
Reason.
The filter unit can also include: electrolytic capacitor EC1, for the detection unit current limliting, that treated to be straight
Galvanic electricity is filtered.
It in the present embodiment, is filtered by the filter unit, obtains stable voltage for detecting the electricity of alternating current
Pressure.Wherein, the value of electrolytic capacitor EC1 is bigger, and the waveform of the detection voltage of acquisition is more stable, but when it reaches stable
Between it is longer；The value of electrolytic capacitor EC1 is smaller, and the waveform of the detection voltage of acquisition is more unstable, but it reaches relatively steady
The fixed time is shorter.Under normal circumstances, the capacitance of electrolytic capacitor EC1 can take between 1uF~10uF.
Specifically, the circuit can also include: the 4th resistance R4；The 4th resistance R4 is connected to the diode
Between D1 and the first resistor R1, the 4th resistance R4 is mainly used for current limliting.
A kind of alternating voltage detection device is additionally provided in the utility model embodiment, the equipment includes a kind of alternating current
Press detection circuit；The circuit includes: rectification unit, detection unit and processing unit；Wherein,
The AC rectification is direct current for receiving the alternating current of isolated power supply output by the rectification unit, will
The direct current is sent to the detection unit；
The detection unit carries out current limliting processing to the direct current, is handled according to current limliting for receiving the direct current
Direct current afterwards obtains detection voltage；
The processing unit, for determining the voltage of the alternating current according to the detection voltage.
Specifically, the detection unit, comprising: first assembly, the second component and third component；The one of the first assembly
End connects the rectification unit, and the other end connects second component and the third component；
The detection voltage is described in the tie point output of the first assembly, second component and the third component
The voltage of current limliting treated direct current.
Specifically, the first assembly, comprising: a resistance, alternatively, at least two are connected in series and/or are connected in parallel
Resistance；
Second component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel；
The third component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel.
Specifically, the processing unit, for determining the direct current before current limliting processing according to the detection voltage
The voltage of voltage, the direct current before being handled according to the current limliting determines the voltage of the alternating current.
Specifically, the processing unit, comprising: analog-digital converter and processor；
The analog-digital converter obtains the number of the detection voltage for carrying out analog-to-digital conversion to the detection voltage
Signal；
The processor, for determining the direct current before current limliting processing according to the digital signal of the detection voltage
The voltage of voltage, the direct current before being handled according to the current limliting determines the voltage of the alternating current.
Specifically, the circuit, further includes: filter unit；
The filter unit, the direct current for exporting to the rectification unit are filtered.
Specifically, the filter unit, comprising: first capacitor, the direct current for exporting to the rectification unit carry out
Filtering processing；
The filter unit, further includes: the second capacitor, for being carried out to the detection unit current limliting treated direct current
Filtering processing.
Specifically, the ratio of the resistance value of the resistance value of the first assembly, the resistance value of second component and the third component
Example can be 20:10:1.
Specifically, the capacitance value range of the first capacitor is 1uF~10uF；
The capacitance value range of second capacitor is 1uF~10uF.
Additionally provide a kind of food cooking machine in the utility model embodiment, the food cooking machine can for soy bean milk making machine,
The electric appliances such as blender, wall-breaking machine, rice cooker or pressure cooker.
The food cooking machine includes: a kind of ac voltage detection circuit；The circuit includes: rectification unit, detection list
Member and processing unit；Wherein,
The AC rectification is direct current for receiving the alternating current of isolated power supply output by the rectification unit, will
The direct current is sent to the detection unit；
The detection unit carries out current limliting processing to the direct current, is handled according to current limliting for receiving the direct current
Direct current afterwards obtains detection voltage；
The processing unit, for determining the voltage of the alternating current according to the detection voltage.
Specifically, the detection unit, comprising: first assembly, the second component and third component；The one of the first assembly
End connects the rectification unit, and the other end connects second component and the third component；
The detection voltage is described in the tie point output of the first assembly, second component and the third component
The voltage of current limliting treated direct current.
Specifically, the first assembly, comprising: a resistance, alternatively, at least two are connected in series and/or are connected in parallel
Resistance；
Second component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel；
The third component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel.
Specifically, the processing unit, for determining the direct current before current limliting processing according to the detection voltage
The voltage of voltage, the direct current before being handled according to the current limliting determines the voltage of the alternating current.
Specifically, the processing unit, comprising: analog-digital converter and processor；
The analog-digital converter obtains the number of the detection voltage for carrying out analog-to-digital conversion to the detection voltage
Signal；
The processor, for determining the direct current before current limliting processing according to the digital signal of the detection voltage
The voltage of voltage, the direct current before being handled according to the current limliting determines the voltage of the alternating current.
Specifically, the circuit, further includes: filter unit；
The filter unit, the direct current for exporting to the rectification unit are filtered.
Specifically, the filter unit, comprising: first capacitor, the direct current for exporting to the rectification unit carry out
Filtering processing；
The filter unit, further includes: the second capacitor, for being carried out to the detection unit current limliting treated direct current
Filtering processing.
Specifically, the ratio of the resistance value of the resistance value of the first assembly, the resistance value of second component and the third component
Example can be 20:10:1.
Specifically, the capacitance value range of the first capacitor is 1uF~10uF；
The capacitance value range of second capacitor is 1uF~10uF.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range, any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model.
Claims (11)
1. a kind of ac voltage detection circuit, which is characterized in that the circuit includes:
The AC rectification is direct current, the direct current is sent to detection by the alternating current for receiving isolated power supply output
The rectification unit of unit；
The direct current is received, current limliting processing is carried out to the direct current, detection electricity is obtained according to current limliting treated direct current
The detection unit of pressure；
The processing unit of the voltage of the alternating current is determined according to the detection voltage.
2. circuit according to claim 1, which is characterized in that the detection unit, comprising: first assembly, the second component
With third component；One end of the first assembly connects the rectification unit, and the other end connects second component and described the
Three components；
The detection voltage is that the tie point of the first assembly, second component and the third component exports the current limliting
The voltage of treated direct current.
3. circuit according to claim 2, which is characterized in that the first assembly, comprising: a resistance, alternatively, at least
Two resistance for being connected in series and/or being connected in parallel；
Second component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel；
The third component, comprising: a resistance, alternatively, at least two resistance for being connected in series and/or being connected in parallel.
4. circuit according to claim 1, which is characterized in that the processing unit, comprising: carried out to the detection voltage
Analog-to-digital conversion obtains the analog-digital converter of the digital signal of the detection voltage；And
The voltage that the direct current before current limliting processing is determined according to the digital signal of the detection voltage, at the current limliting
The voltage of the direct current before reason determines the processor of the voltage of the alternating current.
5. circuit according to claim 1, which is characterized in that the circuit, further includes: to rectification unit output
The filter unit that direct current is filtered.
6. circuit according to claim 5, which is characterized in that the filter unit, comprising: exported to the rectification unit
The first capacitor that is filtered of direct current；
The filter unit, further includes: to the detection unit current limliting treated the second electricity that direct current is filtered
Hold.
7. circuit according to claim 3, which is characterized in that the resistance of the resistance value of the first assembly, second component
The ratio of value and the resistance value of the third component is 20:10:1.
8. circuit according to claim 6, which is characterized in that the capacitance value range of the first capacitor be 1uF~
10uF；
The capacitance value range of second capacitor is 1uF~10uF.
9. circuit according to claim 1, which is characterized in that the rectification unit includes: diode；The diode one
End connects the isolated power supply, and the other end connects the detection unit.
10. a kind of alternating voltage detection device, which is characterized in that the equipment includes: that claim 1 to 9 is described in any item
Ac voltage detection circuit.
11. a kind of food cooking machine, which is characterized in that the food cooking machine includes: that claim 1 to 9 is described in any item
Ac voltage detection circuit.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820540233.4U CN208270643U (en) | 2018-04-16 | 2018-04-16 | A kind of ac voltage detection circuit, equipment and food cooking machine |
| US16/763,007 US20200383522A1 (en) | 2018-02-09 | 2018-08-08 | Cooking appliance and control method thereof |
| PCT/CN2018/099361 WO2019153676A1 (en) | 2018-02-09 | 2018-08-08 | Cooking utensil and control method therefor |
| JP2020530323A JP6972347B2 (en) | 2018-02-09 | 2018-08-08 | Cookware and its control method |
| KR1020207013989A KR102318715B1 (en) | 2018-02-09 | 2018-08-08 | Cooking utensil and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820540233.4U CN208270643U (en) | 2018-04-16 | 2018-04-16 | A kind of ac voltage detection circuit, equipment and food cooking machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208270643U true CN208270643U (en) | 2018-12-21 |
Family
ID=64676405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820540233.4U Active CN208270643U (en) | 2018-02-09 | 2018-04-16 | A kind of ac voltage detection circuit, equipment and food cooking machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208270643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736004A (en) * | 2020-07-21 | 2020-10-02 | 追创科技(苏州)有限公司 | Alternating voltage detection circuit and electronic device |
-
2018
- 2018-04-16 CN CN201820540233.4U patent/CN208270643U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736004A (en) * | 2020-07-21 | 2020-10-02 | 追创科技(苏州)有限公司 | Alternating voltage detection circuit and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105451385B (en) | The cooking equipment for having overcurrent protection function | |
| CN202583311U (en) | Alternating current zero-crossing detection circuit | |
| CN103675424B (en) | Zero passage and standby zero-power-consumption key press detecting circuit, washing machine | |
| WO2010066096A1 (en) | Voltage and current surge protective method and its circuit for induction cooker | |
| TW201336352A (en) | Static electricity removal device and control circuit | |
| CN104578743B (en) | Power-supplying circuit | |
| CN213843381U (en) | Alternating voltage sampling and zero-crossing detection circuit based on current transformer | |
| CN208270643U (en) | A kind of ac voltage detection circuit, equipment and food cooking machine | |
| CN201594121U (en) | Current leakage detecting device | |
| CN103675670A (en) | Pressure switch state detection circuit, circuit board, and electric heating product with circuit board | |
| CN105403790A (en) | Serially-connected arc fault detection circuit and serially-connected arc fault detection method | |
| CN105344007B (en) | The detection device and its ecg equipment of electrocardio pacemaker impulse signal | |
| CN203705517U (en) | Voltage detection circuit, circuit board provided with same, heating equipment and electric heating product | |
| CN202059334U (en) | Constant power output magnetron sputtering coating power supply | |
| CN204575724U (en) | The testing circuit of ac supply signal and heating arrangement | |
| CN203707029U (en) | Relay action response and delay detection circuit, circuit board and electrothermal product comprising same | |
| CN103698576A (en) | Voltage detection circuit, circuit board provided with same, heating equipment and electric heating product | |
| CN208636374U (en) | A kind of a-c cycle detection circuit | |
| CN106707067A (en) | Universal security detection system for electric appliances | |
| CN103151833B (en) | A kind of electricity anti-theft method and anti-electricity-theft device | |
| CN110389248A (en) | A kind of ac voltage detection circuit, equipment, method and storage medium | |
| CN103675672A (en) | Pressure switch state detection circuit, circuit board, and electric heating product with circuit board | |
| CN206639087U (en) | A kind of power compensating circuit of IH rice cookers constantan wire | |
| CN203455397U (en) | Voltage surge detection circuit for food processing machine and soybean milk machine using voltage surge detection circuit | |
| CN203723931U (en) | An anti-interference food processor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |