CN106842108A - A kind of portable car-mounted direct current energy meter on-line measuring device - Google Patents
A kind of portable car-mounted direct current energy meter on-line measuring device Download PDFInfo
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- CN106842108A CN106842108A CN201710174419.2A CN201710174419A CN106842108A CN 106842108 A CN106842108 A CN 106842108A CN 201710174419 A CN201710174419 A CN 201710174419A CN 106842108 A CN106842108 A CN 106842108A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
The invention discloses a kind of portable car-mounted direct current energy meter on-line measuring device, including shell, pcb board, external bus, power module, power computation module, data processing module and error sensing module；External bus respectively with power computation module and error sensing module data cube computation；Power module, power computation module, data processing module, error sensing module are arranged on pcb board；Pcb board is arranged in shell；The electric current of the electrokinetic cell that power computation module will be collected, voltage and the power calculated according to Current Voltage are sent to data processing module, and error sensing module will detect that electric energy error pulse output of the invention and the electric energy error input of detection vehicle electric energy meter are sent to data processing module；Data processing module is by obtaining the error amount of electric energy meter after data processing.The error that on-line checking vehicle electric energy meter can be realized compared with existing detection means of the invention, it is not necessary to detected again after electric energy meter is dismantled, and whole detection time is short, it is simple to operate.
Description
Technical field
The present invention relates to Vehicular direct-current electric energy metrical field, particularly a kind of portable car-mounted direct current energy meter on-line checking
Device.
Background technology
Electric automobile application is more and more extensive, charges and changes two kinds of energy management modes of electricity and be likely to turn into following main flow
Mode, or two kinds and deposit.Vehicular direct-current electric energy meter mainly as change battery charging and discharging is measured under power mode one
The mode of kind.And if carrying out the means of account settlement of the electricity charge using vehicle electric energy meter, then the accuracy of its metering and reliability
Just highlight.
Vehicular direct-current electric energy meter is mounted on electric automobile, with the operation of electric automobile, Vehicular direct-current electric energy meter
Error precision can also offset, in order to ensure the accuracy of the test volumes such as voltage, electric current, power, electric energy that vehicle electric energy meter shows,
Can typically use using electric energy meter is removed from electric automobile after a period of time, then on direct-current electric energy meter calibrating device
The accuracy that is detected to determine vehicle electric energy meter and whether normal operation, this kind of method complex operation, electric automobile needs
Entering maintenance store or genuine is carried out, and spends the time long.
The content of the invention
It is an object of the invention to provide a kind of portable car-mounted direct current energy meter on-line measuring device, it is possible to achieve online
Detect the error of vehicle electric energy meter.
The purpose of the present invention realizes that the portable car-mounted direct current energy meter is examined online by such technical scheme
Surveying device includes shell, pcb board, external bus, power module, power computation module, data processing module and error-detecting mould
Block；The pcb board is arranged in shell, the power module, power computation module, data processing module and error sensing module
It is arranged on pcb board；
The power module, it is electrically connected with power computation module, data processing module and error sensing module；
The power computation module, it is connected with data processing module and external bus data respectively, for gathering electric current
Voltage data and power calculation；
Error sensing module, it is connected with data processing module and external bus data respectively, described portable for detecting
The electric energy error pulse output of formula Vehicular direct-current electric energy meter on-line measuring device and the electric energy error input of detection vehicle electric energy meter；
The data processing module, itself and power module, power computation module and error sensing module data cube computation are used for
The data received from power computation module and error sensing module are processed, and is controlled the communication of error sensing module.
Further, the portable car-mounted direct current energy meter on-line measuring device also includes：
Interactive module, the interactive module is located on pcb board；The interactive module includes button and display screen；
The button is arranged on pcb board and shell is provided with button corresponding with button, button and data processing module
Data cube computation, for starting detection and turning over screen function；
The display screen is arranged on shell, and itself and data processing module data cube computation are electrically connected with power module, are used for
Display testing result, detection data, time, calibration parameter.
Further, the power module includes PMU, working battery, Clock battery, stand-by power supply；
The PMU, its respectively with interactive module, power computation module, data processing module, error-detecting
Module electrical connection, working battery, Clock battery and stand-by power supply electrical connection, for realizing to working battery, Clock battery and standby
Powered with the management of power supply and to interactive module, power computation module, data processing module, error sensing module；
The working battery, it is electrically connected with PMU, for giving portable in the case of without externally fed
Vehicular direct-current electric energy meter on-line measuring device is powered；
The stand-by power supply is the external power supply line being connected with vehicle-mounted cigarette lighter, and it is electrically connected in PMU, is used
Powered to portable car-mounted direct current energy meter on-line measuring device in the case of it cannot be powered in working power and be work electricity
Charged in source；
The Clock battery, it is electrically connected with PMU, in the situation without working power and stand-by power supply
Under, preserve the data and error amount of detection and for system clock provides power supply.
Further, the power computation module includes Current Voltage collecting unit, metering units, temperature compensation unit；
The Current Voltage collecting unit, it is connected with metering units and external bus data respectively, with power module electricity
Connection, current value and magnitude of voltage for gathering electrokinetic cell bus；
The metering units, it connects with Current Voltage collecting unit, data processing module, temperature compensation unit data respectively
Connect, electrically connected with power module；Magnitude of voltage and current value for Current Voltage collecting unit to be collected are converted to digital letter
Number, the realtime power and power integral that electrokinetic cell is calculated in real time obtain accumulating electricity；
The temperature compensation unit, itself and metering units data cube computation are electrically connected, for environment temperature with power module
Real-time sampling is carried out, the temperature-compensating to metering units is completed.
Further, the Current Voltage collecting unit includes external current collector, voltage network, conditioning electricity
Road；
The current collector, it is electrically connected with power module by external bus and modulate circuit data cube computation, is used for
The current value that will be collected is sent to modulate circuit by external bus；
The voltage network, its respectively with external bus and modulate circuit data cube computation, for external bus to be adopted
Modulate circuit is resent to after the magnitude of voltage step-down of the electrokinetic cell for collecting；
The modulate circuit, its respectively with external bus and metering units data cube computation, by low-pass filter circuit nurse one's health
Voltage signal, current signal is nursed one's health by the anti-aliasing circuit of difference.
Further, the error sensing module includes CAN communication unit, pulse detecting unit；
The CAN communication unit, itself and data processing module and vehicle electric energy meter data cube computation are electrically connected with power module
Connect, for reading vehicle operating information, vehicle electric energy meter service data and parameter in real time；
The pulse detecting unit, itself and data processing module and vehicle electric energy meter data cube computation, for detect it is described just
Take the electric energy error pulse output of formula Vehicular direct-current electric energy meter on-line measuring device and detect that the electric energy error of vehicle electric energy meter is defeated
Enter.
Further, the external bus includes voltage sample line, CAN communication line, pulse input, current sample line；
The voltage sample line, its respectively with electrokinetic cell both positive and negative polarity and power computation module data cube computation；
The CAN communication line, its respectively with automobile CAN-bus and error sensing module data cube computation, for by vehicle mounted electric
The current value of measurement, magnitude of voltage, performance number are sent to error sensing module to energy table in real time；
The pulse input, it is electrically connected with vehicle electric energy meter pulse interface and error sensing module respectively, for by mistake
Difference detection module is detected to the pulse signal of vehicle electric energy meter；
The current sample line, itself and power computation module data cube computation, the electrokinetic cell electric current for that will collect is total
Current value on line is sent to power computation module.
Further, Far-infrared communication transceiver and external power supply socket are additionally provided with the pcb board；
The infrared communication transceiver, itself and data processing module data cube computation are electrically connected with power module, for by number
The data and result obtained according to processing module are sent in the equipment of acceptable far infrared signal；
The external power supply socket, it is electrically connected with power module, for being examined online in portable car-mounted direct current energy meter
Survey in device and powered in the case of no electricity.
Further, pulse indicator lamp is additionally provided with the pcb board, itself and error sensing module data cube computation, for just
Take when formula Vehicular direct-current electric energy meter on-line measuring device is detected and send low-frequency pulse and operationally send and tested electric energy meter
Electrical energy pulse frequency pulse signal always.
Further, functional indicator light is additionally provided with the pcb board, itself and data processing module data cube computation, by referring to
Show that lamp color shows the different working condition of portable car-mounted direct current energy meter on-line measuring device.
By adopting the above-described technical solution, the present invention has the advantage that：Compared to conventional electric energy meter detection mode,
Need not be entered using electric motor car of the present invention and be detected again after electric energy meter is dismantled after maintenance store or genuine；The present invention can pacify
In electric motor car, it is possible to achieve anywhere and without dismantling electric energy meter just to the real-time detection of electric energy meter, greatly subtract
Operating procedure when detection time and detection is lacked.
Other advantages of the invention, target and feature will be illustrated in the following description to a certain extent, and
And to a certain extent, based on being will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be wanted by following specification and right
Book is sought to realize and obtain.
Brief description of the drawings
Brief description of the drawings of the invention is as follows.
The structural representation of the portable car-mounted direct current energy meter on-line measuring device that Fig. 1 is provided for the present invention；
The company of the module on the pcb board of the portable car-mounted direct current energy meter on-line measuring device that Fig. 2 is provided for the present invention
Connect block diagram；
The PMU circuit of the portable car-mounted direct current energy meter on-line measuring device that Fig. 3 is provided for the present invention
Figure；
The voltage lattice network of the portable car-mounted direct current energy meter on-line measuring device that Fig. 4 is provided for the present invention
Figure；
The LPF of the modulate circuit of the portable car-mounted direct current energy meter on-line measuring device that Fig. 5 is provided for the present invention
Circuit diagram；
The difference of the modulate circuit of the portable car-mounted direct current energy meter on-line measuring device that Fig. 6 is provided for the present invention is anti-mixed
Folded circuit diagram；
The circuit diagram of the metering module of the portable car-mounted direct current energy meter on-line measuring device that Fig. 7 is provided for the present invention；
The temperature compensation unit circuit of the portable car-mounted direct current energy meter on-line measuring device that Fig. 8 is provided for the present invention
Figure；
The CAN communication element circuit figure of the portable car-mounted direct current energy meter on-line measuring device that Fig. 9 is provided for the present invention；
The pulse detection modular circuit of the portable car-mounted direct current energy meter on-line measuring device that Figure 10 is provided for the present invention
Figure；
The display screen circuit diagram of the portable car-mounted direct current energy meter on-line measuring device that Figure 11 is provided for the present invention；
The Clock battery circuit diagram of the portable car-mounted direct current energy meter on-line measuring device that Figure 12 is provided for the present invention；
The data processing module circuit of the portable car-mounted direct current energy meter on-line measuring device that Figure 13 is provided for the present invention
Figure；
The working battery charge protection of the portable car-mounted direct current energy meter on-line measuring device that Figure 14 is provided for the present invention
Circuit diagram.
In Fig. 1：1st, upper lid；2nd, button；3rd, pcb board；4th, display screen；5th, pulse indicator lamp；6th, functional indicator light；7th, it is remote red
Outer communications transceiver；8th, button；9th, working battery；10th, external power supply socket；11st, drain pan；12nd, external power supply line；13rd, voltage
Sampling line positive pole；14th, voltage sample line negative pole；15th, current sample line；16th, pulse input positive pole；17th, pulse input is born
Pole；18th, current collector；19th, electrokinetic cell current bus；20th, current collector DB9 connectors；21st, CAN communication line positive pole；
22nd, CAN communication line negative pole；23rd, external bus.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, portable car-mounted direct current energy meter on-line measuring device, including shell, pcb board 3, power supply mould
Block, interactive module, power computation module, data processing module, error sensing module, external bus 23；Shell includes the He of upper lid 1
Drain pan 11, power module, interactive module, power computation module, data processing module, error sensing module are arranged on pcb board；
Pcb board is arranged in upper lid 1 and drain pan 11, and upper lid 1 and drain pan 11 are closed by screw；
The power module includes PMU, working battery 9, Clock battery, stand-by power supply；
The interactive module includes button 8 and display screen 4；
The power computation module includes Current Voltage collecting unit, metering units, temperature compensation unit；
The Current Voltage collecting unit includes external current collector 18, voltage network, modulate circuit；
The error sensing module includes CAN communication unit, pulse detecting unit；
The external bus includes voltage sample line, CAN communication line, pulse input, current sample line 15；
The voltage sample line includes voltage sample line positive pole 13 and voltage sample line negative pole 14；The CAN communication line bag
Include CAN communication line positive pole 21 and CAN communication line negative pole 22；The pulse input includes that pulse input positive pole 16 and pulse are defeated
Enter line negative pole 17；
PMU respectively with working battery 9, Clock battery, stand-by power supply, current sampler, temperature-compensating list
Unit, display screen 4, data processing module, CAN communication unit and pulse detecting unit electrical connection；For realize to working battery 9,
The management of Clock battery and stand-by power supply and to current sampler, temperature compensation unit, display screen 4, data processing module, CAN
Communication unit and pulse detecting unit are powered；
The working battery 9, it is electrically connected with PMU, for giving portable in the case of without externally fed
Vehicular direct-current electric energy meter on-line measuring device is powered；
The stand-by power supply is the external power supply line 12 being connected with vehicle-mounted cigarette lighter, and it is electrically connected in PMU,
Powered to portable car-mounted direct current energy meter on-line measuring device in the case of for that cannot be powered in working power and be work
Battery 9 is charged；
The Clock battery, it is electrically connected with PMU, in the situation without working power and stand-by power supply
Under, preserve the data and error amount of detection and for system clock provides power supply.
The button 8 is arranged on pcb board 3 and shell is provided with button 2 corresponding with button 8, button 8 and data processing
Module data is connected, for starting detection and turning over screen function；
The display screen 4 is arranged on shell, and itself and data processing module data cube computation are electrically connected with PMU
Connect, for showing testing result, detection data, time, calibration parameter.
The metering units, its respectively with modulate circuit, data processing module, temperature compensation unit data cube computation, with electricity
Source control unit is electrically connected；Magnitude of voltage and current value for that will collect are converted to data signal, and electrokinetic cell is calculated in real time
Realtime power and power integral obtain accumulate electricity；
The temperature compensation unit, itself and metering units data cube computation are electrically connected, for environment with PMU
Temperature carries out real-time sampling, completes the temperature-compensating to metering units.
The Current Voltage collecting unit includes external current collector 18, voltage network, modulate circuit；
The current collector 18, it passes through current sample line 15 and modulate circuit data cube computation, with PMU
Electrical connection, the current value for that will collect is sent to modulate circuit by current acquisition line；
The voltage network, itself and modulate circuit data cube computation, for by voltage acquisition line positive pole and voltage acquisition
Modulate circuit is resent to after the magnitude of voltage step-down of the electrokinetic cell that line negative pole is collected；
The modulate circuit, its respectively with current acquisition line, voltage network and metering units data cube computation, by low
Bandpass filter circuit nurses one's health voltage signal, and current signal is nursed one's health by the anti-aliasing circuit of difference.
The CAN communication unit, itself and data processing module and vehicle electric energy meter data cube computation, with PMU electricity
Connection, for the real-time current value of vehicle electric energy meter, magnitude of voltage, performance number and parameters of electric energy meter information to be sent into data processing
Module；
The pulse detecting unit, itself and data processing module and vehicle electric energy meter data cube computation are electrically connected with power management
Connect, the electric energy error pulse for detecting the portable car-mounted direct current energy meter on-line measuring device is exported and detection vehicle mounted electric
The electric energy error input of energy table.
The voltage sample line positive pole 13, voltage sample line negative pole 14, its respectively with electrokinetic cell both positive and negative polarity and power meter
Calculate module data connection；
The CAN communication line positive pole 21, CAN communication line negative pole 22, its respectively with automobile CAN-bus and CAN communication unit
Data cube computation, error sensing module is sent to for the current value that measures vehicle electric energy meter in real time, magnitude of voltage, performance number；
The pulse input positive pole 16 and pulse input negative pole 17, its respectively with vehicle electric energy meter pulse interface and arteries and veins
Detection unit electrical connection is rushed, the pulse signal of vehicle electric energy meter is detected for error sensing module；
The current sample line 15, itself and power computation module data cube computation, for the electrokinetic cell electric current that will be collected
Current value in bus 19 is sent to power computation module.
Far-infrared communication transceiver 7 and external power supply socket 10 are additionally provided with the pcb board 3；
The infrared communication transceiver, itself and data processing module data cube computation are electrically connected with PMU, are used for
The data and result that data processing module is obtained are sent in the equipment of acceptable far infrared signal；
The external power supply socket 10, it is electrically connected with PMU, in portable car-mounted direct current energy meter
Powered in the case of no electricity in on-line measuring device.
Pulse indicator lamp 5 is additionally provided with the pcb board 3, itself and data processing module data cube computation, for portable car-mounted
Direct current energy meter on-line measuring device sends low-frequency pulse and operationally sends the electric energy arteries and veins with tested electric energy meter when being detected
Rush frequency pulse signal always.
Functional indicator light 6 is additionally provided with the pcb board 3, itself and data processing module data cube computation, by indicator light colors
Show the different working condition of portable car-mounted direct current energy meter on-line measuring device.
After the present apparatus is arranged on automobile and connects the line, the button 2 on lower casing is pressed, start the present apparatus pair
Vehicle electric energy meter is detected；Fig. 3 show PMU circuit diagram, and the chip model for being used is MP3910, power management
Unit control working battery 9 is powered to each parts of device；
The current value of current sensor collection electrokinetic cell bus is simultaneously sent to the LPF of modulate circuit shown in Fig. 5
Circuit；Voltage sample both positive and negative polarity is by magnitude of voltage by the conditioning that is sent to after the voltage network processes shown in Fig. 4 shown in Fig. 6
The anti-aliasing circuit of difference of circuit；Voltage signal and current signal are anti-mixed by modulate circuit low-pass filter circuit and difference respectively
Metering module is sent to after folded circuit；
Fig. 7 show the circuit diagram of metering module, and the chip model for using is STPM32, metering module by voltage signal and
Current signal is AD converted, and Fig. 8 show temperature compensation unit circuit diagram, and the chip model for using is U-LM75, and temperature is mended
Repay unit to compensate the ADC a reference source voltages of metering module, reducing the temperature of AD conversion influences to cause that the ADC after conversion is adopted
Sample value is more accurate；Metering module also obtains realtime power by multiplying, and accumulation electricity is obtained by power integral, and will
Data processing module shown in these data is activations to Figure 13, the chip model for using is STM32F103；
Fig. 9 show the circuit diagram of CAN communication unit, and the chip model for using is ADM3054, and CAN communication unit passes through
CAN communication line measures voltage, electric current, power of electric energy meter etc. and using these data is activations to data processing module as base in real time
This measurement data shows；
Figure 10 show the circuit diagram of pulse detecting unit, and pulse detection module detects electrical energy meter electricity by pulse input
Energy impulse carries out contrasting the error for obtaining electric energy meter with the high-frequency impulse of the present apparatus；
Circuit shown in Figure 11 be the circuit diagram of display screen 4, the chip model for using be 48U509792FUV0 with
YD0850652XXYYMM00, for showing measurement data and error amount etc.；
When working battery 9 without electricity when, by the external power supply line 12 of stand-by power supply be connected to vehicle-mounted cigarette lighter to
The present apparatus is powered while also charged to working battery 9, as shown in figure 14.If both without vehicle-mounted cigarette lighter and working battery 9
When, be connected with the external power supply socket 10 on PCB main board by other power supplys and powered to the present apparatus, working battery 9 do not have electricity,
In the case of not having vehicle-mounted cigarette lighter and other power supplys, the Clock battery shown in Figure 12 provides system clock and guarantor to the present apparatus
Deposit all of measurement data and result.
Be sent in other equipment for detection data and result of the present apparatus etc. by Far-infrared communication transceiver 7, facilitates data
Preserve and analyze；Pulse indicator lamp 5 on pcb board 3 when the present apparatus works by showing electrical energy meter electricity energy impulse frequency,
Low-frequency pulse is shown when the present apparatus is detected；Portable car-mounted direct current is shown by the color of the relay indicating light on pcb board 3
The different working condition of electric energy meter on-line measuring device.
Specific chip model is used only for how teaching those skilled in the art specifically implement this hair in above-described embodiment
It is bright, but be not intended to be only capable of using above-described embodiment chips model, practice can be combined in implementation process to be needed to determine phase
The chip or circuit answered.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of the technical program, it all should cover in the present invention
Right in the middle of.
Claims (10)
1. a kind of portable car-mounted direct current energy meter on-line measuring device, it is characterised in that：Including shell, pcb board, external total
Line, power module, power computation module, data processing module and error sensing module；The pcb board is arranged in shell, outward
Bus is connect to be electrically connected with pcb board；Power module, power computation module, data processing module, error sensing module are arranged on PCB
On plate；
The power module, it is electrically connected with power computation module, data processing module and error sensing module；
The power computation module, it is connected with data processing module and external bus data respectively, for gathering electrokinetic cell
Current and voltage data and power calculation；
Error sensing module, it is connected with data processing module and external bus data respectively, for detecting the portable vehicle
Carry the electric energy error pulse output of direct current energy meter on-line measuring device and the electric energy error input of detection vehicle electric energy meter；
The data processing module, itself and power module, power computation module and error sensing module data cube computation, for will be from
The data that power computation module and error sensing module are received are processed, and control the communication of error sensing module.
2. portable car-mounted direct current energy meter on-line measuring device as claimed in claim 1, it is characterised in that：It is described portable
Vehicular direct-current electric energy meter on-line measuring device also includes：
Interactive module；The interactive module is located on pcb board；The interactive module includes button and display screen；
The button is arranged on pcb board and shell is provided with button corresponding with button, button and data processing module data
Connection, for starting detection and turning over screen function；
The display screen is arranged on shell, and itself and data processing module data cube computation are electrically connected, with power module for showing
Testing result, detection data, time, calibration parameter.
3. portable car-mounted direct current energy meter on-line measuring device as claimed in claim 1, it is characterised in that：The power supply mould
Block includes PMU, working battery, Clock battery, stand-by power supply；
The PMU, its respectively with interactive module, power computation module, data processing module, error sensing module
Electrical connection, working battery, Clock battery and stand-by power supply electrical connection, for realizing to working battery, Clock battery and standby electricity
The management in source and powered to interactive module, power computation module, data processing module, error sensing module；
The working battery, it is electrically connected with PMU, for giving portable car-mounted in the case of without externally fed
Direct current energy meter on-line measuring device is powered；
The stand-by power supply is the external power supply line being connected with vehicle-mounted cigarette lighter, its in PMU electrically connect, for
Working power is powered and for working power is entered in the case of cannot powering to portable car-mounted direct current energy meter on-line measuring device
Row charges；
The Clock battery, it is electrically connected with PMU, in the case of without working power and stand-by power supply, protecting
Deposit the data and error amount of detection and for system clock provides power supply.
4. portable car-mounted direct current energy meter on-line measuring device as claimed in claim 1, it is characterised in that：The power meter
Calculating module includes Current Voltage collecting unit, metering units, temperature compensation unit；
The Current Voltage collecting unit, it is connected with metering units and external bus data, is electrically connected with power module respectively,
Current value and magnitude of voltage for gathering electrokinetic cell bus；
The metering units, its respectively with Current Voltage collecting unit, data processing module, temperature compensation unit data cube computation,
Electrically connected with power module；Magnitude of voltage and current value for Current Voltage collecting unit to be collected are converted to data signal,
The realtime power and power integral for calculating electrokinetic cell in real time obtain accumulating electricity；
The temperature compensation unit, itself and metering units data cube computation are electrically connected, with power module for being carried out to environment temperature
Real-time sampling, completes the temperature-compensating to metering units.
5. portable car-mounted direct current energy meter on-line measuring device as claimed in claim 4, it is characterised in that：The electric current electricity
Pressure collecting unit includes external current collector, voltage network, modulate circuit；
The current collector, it is electrically connected by external bus and modulate circuit data cube computation with power module, for that will adopt
The current value for collecting is sent to modulate circuit by external bus；
The voltage network, its respectively with external bus and modulate circuit data cube computation, for external bus to be collected
Electrokinetic cell magnitude of voltage step-down after be resent to modulate circuit；
The modulate circuit, its respectively with external bus and metering units data cube computation, voltage is nursed one's health by low-pass filter circuit
Signal, current signal is nursed one's health by the anti-aliasing circuit of difference.
6. portable car-mounted direct current energy meter on-line measuring device as claimed in claim 1, it is characterised in that：The error inspection
Surveying module includes CAN communication unit, pulse detecting unit；
The CAN communication unit, itself and data processing module and vehicle electric energy meter data cube computation are electrically connected with power module, are used
In reading vehicle operating information, vehicle electric energy meter service data and parameter in real time；
The pulse detecting unit, itself and data processing module and vehicle electric energy meter data cube computation are described portable for detecting
The electric energy error pulse output of Vehicular direct-current electric energy meter on-line measuring device and the electric energy error input of detection vehicle electric energy meter.
7. portable car-mounted direct current energy meter on-line measuring device as claimed in claim 1, it is characterised in that：It is described external total
Line includes voltage sample line, CAN communication line, pulse input, current sample line；
The voltage sample line, its respectively with electrokinetic cell both positive and negative polarity and power computation module data cube computation；
The CAN communication line, its respectively with automobile CAN-bus and error sensing module data cube computation, for by vehicle electric energy meter
The current value of measurement, magnitude of voltage, performance number are sent to error sensing module in real time；
The pulse input, it is electrically connected with vehicle electric energy meter pulse interface and error sensing module respectively, for error inspection
Module is surveyed to detect the pulse signal of vehicle electric energy meter；
The current sample line, itself and power computation module data cube computation, for the electrokinetic cell current bus that will be collected
Current value be sent to power computation module.
8. any portable car-mounted direct current energy meter on-line measuring device as described in claim 1-7, it is characterised in that：It is described
Far-infrared communication transceiver and external power supply socket are additionally provided with pcb board；
The infrared communication transceiver, itself and data processing module data cube computation are electrically connected, for by data with power module
The data and result that reason module is obtained are sent in the equipment of acceptable far infrared signal；
The external power supply socket, it is electrically connected with power module, in portable car-mounted direct current energy meter on-line checking dress
Powered in the case of putting interior no electricity.
9. portable car-mounted direct current energy meter on-line measuring device as claimed in claim 8, it is characterised in that：The pcb board
On be additionally provided with pulse indicator lamp, itself and error sensing module data cube computation, for portable car-mounted direct current energy meter on-line checking
Device sends low-frequency pulse and operationally sends the pulse letter with the electrical energy pulse frequency of tested electric energy meter always when being detected
Number.
10. portable car-mounted direct current energy meter on-line measuring device as claimed in claim 9, it is characterised in that：The pcb board
On be additionally provided with functional indicator light, itself and data processing module data cube computation show portable car-mounted direct current by indicator light colors
The different working condition of electric energy meter on-line measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174419.2A CN106842108A (en) | 2017-03-22 | 2017-03-22 | A kind of portable car-mounted direct current energy meter on-line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174419.2A CN106842108A (en) | 2017-03-22 | 2017-03-22 | A kind of portable car-mounted direct current energy meter on-line measuring device |
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| CN108362932A (en) * | 2017-09-08 | 2018-08-03 | 广州供电局有限公司 | Electric energy meter battery undervoltage detection device |
| JP2019144246A (en) * | 2018-02-22 | 2019-08-29 | 日置電機株式会社 | Electric power computing device and electric power computing method |
| CN110389253A (en) * | 2019-07-16 | 2019-10-29 | 广州汉光电气股份有限公司 | A kind of metering device and end metering device of three phase electrical parameters |
| CN110389254A (en) * | 2019-07-16 | 2019-10-29 | 广州汉光电气股份有限公司 | A kind of metering device and end metering device of single-phase electrical parameter |
| CN113138362A (en) * | 2021-05-11 | 2021-07-20 | 深圳市先行电气技术有限公司 | Calibration method for automatically compensating electric energy metering error of electric energy meter |
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| CN113138362A (en) * | 2021-05-11 | 2021-07-20 | 深圳市先行电气技术有限公司 | Calibration method for automatically compensating electric energy metering error of electric energy meter |
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