CN205941649U - Wireless digital multimeter of charging - Google Patents
Wireless digital multimeter of charging Download PDFInfo
- Publication number
- CN205941649U CN205941649U CN201620891202.4U CN201620891202U CN205941649U CN 205941649 U CN205941649 U CN 205941649U CN 201620891202 U CN201620891202 U CN 201620891202U CN 205941649 U CN205941649 U CN 205941649U
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- module
- input
- wireless charging
- outfan
- digital multimeter
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Abstract
The utility model relates to a digital multimeter, more specifically says, relates to a wireless digital multimeter of charging. Including the wireless module of charging, rechargeable battery, electric quantity detection module, central controller, IV conversion module, root mean square value conversion module, AD conversion module, resistance measurement module, diode polarity measured module and character display screen, rechargeable battery's input is being connected to the output of the wireless module of charging, central controller's input is being connected to rechargeable battery's output, electric quantity detection module's input is being connected to rechargeable battery's output, central controller's input is being connected to electric quantity detection module's output, root mean square value conversion module's input is being connected to IV conversion module's output, AD conversion module's input is being connected to root mean square value conversion module's output. The utility model discloses control is accurate, can measuring current, multiple electricity volume parameters such as voltage, resistance to can wirelessly charge and show self battery power.
Description
Technical field
This utility model relates generally to digital multimeter, more particularly, it relates to a kind of digital multimeter of wireless charging.
Background technology
Digital multimeter is a kind of multifunctional electronic measuring instrument, generally comprises the work(such as ammeter, voltmeter, ohmmeter
Can, otherwise referred to as multimeter, use tricks more, universal metre, or avometer.Digital multimeter is typically used for basic fault and examines
Disconnected portable unit, also has the device being placed in workbench, and usual resolution can generally achieve five to six, is in electric measurement
The electronic machine that must go up.General digital multimeter carries for convenience and battery is usually used as electric energy supply, disposably
Battery easy to use but can waste of resource pollution environment, rechargeable battery environmental protection but change and charge inconvenience.The design aims to solve the problem that
The power supply underaction of digital multimeter, battery electric quantity is difficult the problems such as observe, and designs a kind of digital multimeter of wireless charging.
Its precise control, can measure the electricity such as DC current, DC voltage, alternating current, alternating voltage, resistance and diode polarity
Amount parameter, is shown by alphanumeric display.Can charge to the rechargeable battery of itself by wireless charging module, and can examine
Survey and show self residual electricity, convenient use.
Utility model content
This utility model is mainly solving the technical problems that provide a kind of digital multimeter of wireless charging.It controls accurate
Really, the electrical quantities parameter such as DC current, DC voltage, alternating current, alternating voltage, resistance and diode polarity can be measured,
Shown by alphanumeric display.Can charge to the rechargeable battery of itself by wireless charging module, and can detect and show
Show self residual electricity, convenient use.
For solving above-mentioned technical problem, a kind of digital multimeter of wireless charging of this utility model includes wireless charging mould
Block, rechargeable battery, electric power detection module, central controller, I/V modular converter, root-mean-square value modular converter, A/D modular converter,
Resistance measuring module, diode polarity measurement module and alphanumeric display.Its precise control, can measure multiple electrical quantities ginsengs
Number, and can wireless charging and display its cells electricity.
Wherein, the outfan of described wireless charging module is connected to the input of rechargeable battery；Described rechargeable battery defeated
Go out the input that end is connected to central controller；The outfan of described rechargeable battery is connected to the input of electric power detection module；
The outfan of described electric power detection module is connected to the input of central controller；The outfan of described I/V modular converter connects
The input of root-mean-square value modular converter；The outfan of described root-mean-square value modular converter is connected to the defeated of A/D modular converter
Enter end；The outfan of described resistance measuring module is connected to the input of A/D modular converter；The output of described A/D modular converter
End is connected to the input of central controller；The outfan of described diode polarity measurement module is connected to the defeated of central controller
Enter end；The outfan of described central controller is connected to the input of alphanumeric display.
Optimize further as of the present utility model, wireless described in a kind of digital multimeter of wireless charging of this utility model
Charging module adopts LM7805 type voltage stabilizing chip.
Optimize further as of the present utility model, central authorities described in a kind of digital multimeter of wireless charging of this utility model
Controller adopts AT89C52 type single-chip microcomputer.
Optimize further as of the present utility model, A/D described in a kind of digital multimeter of wireless charging of this utility model
Modular converter adopts ADC0809 type modulus conversion chip.
Optimize further as of the present utility model, electricity described in a kind of digital multimeter of wireless charging of this utility model
Detection module adopts FAN4010 type electric current induction amplifier.
Optimize further as of the present utility model, I/V described in a kind of digital multimeter of wireless charging of this utility model
Modular converter adopts RCV420 type electric current annular receiver chip.
Optimize further as of the present utility model, mean square described in a kind of digital multimeter of wireless charging of this utility model
Root modular converter adopts AD536A type Root Mean square Converter.
Control effect：A kind of digital multimeter of wireless charging of this utility model, its precise control, unidirectional current can be measured
The electrical quantities parameter such as stream, DC voltage, alternating current, alternating voltage, resistance and diode polarity, is shown by alphanumeric display
Out.Can charge to the rechargeable battery of itself by wireless charging module, and can detect and show self residual electricity, convenient
Use.
Brief description
The utility model is described in more detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is a kind of digital multimeter hardware structure diagram of wireless charging of this utility model.
Fig. 2 is a kind of schematic diagram of the digital multimeter central controller of wireless charging of this utility model.
Fig. 3 is a kind of schematic diagram of the digital multimeter wireless charging module of wireless charging of this utility model.
Fig. 4 is a kind of schematic diagram of the digital multimeter electric power detection module of wireless charging of this utility model.
Fig. 5 is a kind of schematic diagram of the digital multimeter A/D modular converter of wireless charging of this utility model.
Fig. 6 is a kind of schematic diagram of the digital multimeter I/V modular converter of wireless charging of this utility model.
Fig. 7 is a kind of schematic diagram of the digital multimeter root-mean-square value modular converter of wireless charging of this utility model.
Fig. 8 is a kind of schematic diagram of the digital multimeter resistance measuring module of wireless charging of this utility model.
Fig. 9 is a kind of schematic diagram of the digital multimeter alphanumeric display of wireless charging of this utility model.
Specific embodiment
Specific embodiment one：
In conjunction with Fig. 1,2,3,4,5,6,7,8,9, present embodiment, a kind of numeral ten thousand of wireless charging of this utility model are described
Include wireless charging module with table, rechargeable battery, electric power detection module, central controller, I/V modular converter, root-mean-square value turn
Die change block, A/D modular converter, resistance measuring module, diode polarity measurement module and alphanumeric display, its precise control, energy
Enough electrical quantities parameters such as measurement DC current, DC voltage, alternating current, alternating voltage, resistance and diode polarity, by word
Symbol display screen shows.Can charge to the rechargeable battery of itself by wireless charging module, and can detect and show itself
Dump energy, convenient use.
The outfan of wherein said wireless charging module is connected to the input of rechargeable battery, and wireless charging module being capable of profit
Pass through electromagnetic conversion principle wirelessly transmitting electrical energy with primary and secondary coil, and 220V alternating voltage is converted into DC voltage, supply unit
The voltage requirements of part.
The outfan of described rechargeable battery is connected to the input of central controller, during the outfan of rechargeable battery is connected to
The VCC pin of centre controller, rechargeable battery rises as the energy storage device of digital multimeter, the power storage that charging module is received
Come, provide electric energy for whole system.
The outfan of described rechargeable battery is connected to the input of electric power detection module, and the outfan of rechargeable battery is connected to
The VI end of electric power detection module, electric power detection module can be according to the charge status of rechargeable battery, and cumulative calculation goes out the electricity that charges
The dump energy in pond, battery level information is passed to central controller.
The outfan of described I/V modular converter is connected to the input of root-mean-square value modular converter, I/V modular converter
BEVFB pin is connected to the VID pin of root-mean-square value modular converter, and current signal can be converted into corresponding to by I/V modular converter
Voltage signal, maintain the properties such as the cycle of primary current, exported in the form of analog voltage, survey in order to further
Amount and calculating.
The outfan of described root-mean-square value modular converter is connected to the input of A/D modular converter, root-mean-square value modulus of conversion
The OUT pin of block is connected to the IN0 pin of A/D modular converter, and root-mean-square value modular converter can be to the cyclical signal of input
Take root-mean-square value, calculate the virtual value of alternating voltage, alternating voltage is exported with the DC voltage form of virtual value, in order to
Further measurement and calculating.
The outfan of described resistance measuring module is connected to the input of A/D modular converter, the output of resistance measuring module
End is connected to the IN1 pin of A/D modular converter, and resistance measuring module measures the magnitude of voltage on testing resistance, according to circuit partial pressure
Law, calculates the resistance of testing resistance, and resistance measuring module is exported in the form of analog voltage.
The outfan of described A/D modular converter is connected to the input of central controller, and the D0～D7 of A/D modular converter draws
Foot is connected to PC0～PC7 pin of central controller, and A/D modular converter is responsible for will be defeated for the measurement modules such as voltage, electric current, resistance
The analog voltage signal going out is reduced into original signal numerical value, and the numerical value of signal is sent to central control with 8 bit digital forms
Device, carries out last signal parameter reduction.
Specific embodiment two：
In conjunction with Fig. 1,2,3,4,5,6,7,8,9, present embodiment is described, described wireless charging module adopts LM7805 model
Chip, this chip is circuit of three-terminal voltage-stabilizing integrated, and function-stable can be adjusted to supply voltage, by 220V photovoltaic conversion
Become galvanic current pressure, meet the power supply needs of some equipment in system and element.
Specific embodiment three：
In conjunction with Fig. 1,2,3,4,5,6,7,8,9, present embodiment is described, described central controller adopts AT89C52 type monolithic
Machine, central controller is by integrated for the major part of microcomputer one-chip microcomputer on a single die, cost
Low and powerful is it is adaptable to the design of this control system needs.
Specific embodiment four：
In conjunction with Fig. 1,2,3,4,5,6,7,8,9, present embodiment is described, described electric power detection module adopts FAN4010 type electricity
Stream induction amplifier, this sensor is a kind of electric current induction amplifier designing for battery power supply system, can be to the power of circuit
It is monitored, cumulative calculation goes out electric quantity consumption, battery is not charged and interfere, low cost high precision.
Specific embodiment five：
In conjunction with Fig. 1,2,3,4,5,6,7,8,9, present embodiment is described, described I/V modular converter adopts RCV420 type electric current
The input signal of electric current can be converted into the voltage output signal of 0～5V, have very high sexual valence by torus receiver chip
Than.
Specific embodiment six：
In conjunction with Fig. 1,2,3,4,5,6,7,8,9, present embodiment is described, described root value modular converter adopts AD536A type
Root Mean square Converter, this chip can execute root-mean-square direct current and change, and can calculate that to comprise direct current equal with the complicated wave form exchanging
Square root-mean-square value, has higher precision.
Operation principle：
A kind of digital multimeter of wireless charging of the design, can measure alternating voltage, alternating current, DC voltage, straight
The electrical quantities parameters such as stream electric current, resistance and diode polarity.DC current and alternating current are first sent into I/V modular converter and are converted into
Voltage signal, ensure that the periodicity of alternating current during this.Voltage signal after conversion for the current signal, entrance can
To process the root-mean-square value modular converter of alternating voltage, the root-mean-square value calculating periodic signal is virtual value.Finally will be mean square
The analog DC voltage signal of root modular converter output sends into the concrete numerical value that A/D modular converter man calculates initial parameter, with 8
Position digital signal sends central controller to.Resistance measuring module make use of circuit voltage divider principle, by measuring in measured resistance
Voltage calculate resistance value.By alphanumeric display, numerical value is shown after being processed by central controller.Primary and secondary coil can be passed through
Using electromagnetic induction principle wireless transmission electric energy, it is that rechargeable battery charges.Charging can also be detected by way of detecting power
The dump energy of battery, is shown by display screen.
Although with preferred embodiment disclosure as above, it is not limited to this utility model to this utility model, appoint
What person skilled in the art, without departing from spirit and scope of the present utility model, can do various change and modify, therefore
Protection domain of the present utility model should be by being defined that claims are defined.
Claims (7)
1. a kind of digital multimeter of wireless charging is it is characterised in that the digital multimeter of described wireless charging includes wireless charging
Electric module, rechargeable battery, electric power detection module, central controller, I/V modular converter, root-mean-square value modular converter, A/D conversion
Module, resistance measuring module, diode polarity measurement module and alphanumeric display, the outfan of described wireless charging module connects
The input of rechargeable battery；The outfan of described rechargeable battery is connected to the input of central controller；Described rechargeable battery
Outfan be connected to the input of electric power detection module；The outfan of described electric power detection module is connected to central controller
Input；The outfan of described I/V modular converter is connected to the input of root-mean-square value modular converter；Described root-mean-square value conversion
The outfan of module is connected to the input of A/D modular converter；The outfan of described resistance measuring module is connected to A/D modulus of conversion
The input of block；The outfan of described A/D modular converter is connected to the input of central controller；Described diode polarity measurement
The outfan of module is connected to the input of central controller；The outfan of described central controller is connected to alphanumeric display
Input.
2. a kind of wireless charging according to claim 1 digital multimeter it is characterised in that：Described wireless charging module
Using LM7805 type voltage stabilizing chip.
3. a kind of wireless charging according to claim 1 digital multimeter it is characterised in that：Described central controller is adopted
With AT89C52 type single-chip microcomputer.
4. a kind of wireless charging according to claim 1 digital multimeter it is characterised in that：Described A/D modular converter
Using ADC0809 type modulus conversion chip.
5. a kind of wireless charging according to claim 1 digital multimeter it is characterised in that：Described electric power detection module
Using FAN4010 type electric current induction amplifier.
6. a kind of wireless charging according to claim 1 digital multimeter it is characterised in that：Described I/V modular converter
Using RCV420 type electric current annular receiver chip.
7. a kind of wireless charging according to claim 1 digital multimeter it is characterised in that：Described root-mean-square value conversion
Module adopts AD536A type Root Mean square Converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620891202.4U CN205941649U (en) | 2016-08-17 | 2016-08-17 | Wireless digital multimeter of charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620891202.4U CN205941649U (en) | 2016-08-17 | 2016-08-17 | Wireless digital multimeter of charging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205941649U true CN205941649U (en) | 2017-02-08 |
Family
ID=57917977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620891202.4U Expired - Fee Related CN205941649U (en) | 2016-08-17 | 2016-08-17 | Wireless digital multimeter of charging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205941649U (en) |
-
2016
- 2016-08-17 CN CN201620891202.4U patent/CN205941649U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20180817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |