CN209280909U - The automatic calibration tool in eight channels - Google Patents
The automatic calibration tool in eight channels Download PDFInfo
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- CN209280909U CN209280909U CN201821939566.0U CN201821939566U CN209280909U CN 209280909 U CN209280909 U CN 209280909U CN 201821939566 U CN201821939566 U CN 201821939566U CN 209280909 U CN209280909 U CN 209280909U
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Abstract
The utility model relates to the technical fields of control circuit, and in particular to a kind of automatic calibration tool in eight channels.It is integrated with control MCU, channel hop module, communication module and the power circuit for powering for modules in the automatic calibration tool in eight channels, current wiring terminal and voltage wiring terminal for accessing eight paths lines are connected with after the channel hop module；The communication module includes channel switch-over control signal input terminal and channel switch-over control signal output end, its channel switch-over control signal output end is connect with the channel switch-over control signal receiving end of control MCU, the control MCU includes that interchannel jumps control signal output, and the interchannel jumps control signal output and connect with channel hop module.The automatic calibration tool in eight channels uses eight paths, for every paths using two relays come switching electric current, a relay switches voltage, and a relay controls multimeter access, and the automatic Current Voltage for carrying out eight channels is calibrated.
Description
Technical field
The utility model relates to the technical fields of control circuit, and in particular to a kind of automatic calibration tool in eight channels.
Background technique
Battery detection equipment need to carry out equipment Alignment to improve equipment precision.Battery detection equipment is using four-wire system come to electricity
Pond carries out charge and discharge electro-detection, four lines be respectively electric current just, electric current is negative, voltage just and voltage negative.To improve equipment precision, need pair
Battery detection equipment carries out channel calibration, therefore to carry out correcting current and voltage calibration to No. 1 to No. 8 channel of equipment.?
When being performed for more than multimeter current range and being calibrated, need to seal in standard 1m Ω at battery detection equipment channel current positive and negative
Current divider, then single channel calibration is carried out with multimeter detection current divider both end voltage cooperation upper computer software, channel has been calibrated
It is calibrated at the rear next channel of replacement, until eight channel current calibrations are completed.After having carried out current channel calibration, setting
A resistance value and power resistance appropriate and positive and negative in resistance both ends access device voltage are sealed between standby channel current positive and negative anodes
Pole and multimeter detect voltage, carry out voltage calibration by cooperation host computer, such eight channels of complicated replacement and behaviour
Calibration command is assigned as host computer to complete eight channel calibrations.Such calibration method low efficiency, manual switching channel into
Increase risk of error.
Utility model content
For the purpose of this utility model aiming at the defect of the prior art, providing one kind can be to the electric current of battery detection equipment
A key calibration is carried out with voltage, jumps channel automatically, switches voltage calibration from correcting current automatically, automatically switches multimeter access
The automatic calibration tool in eight channels.
The utility model one kind eight channels automatic calibration tool, be integrated in the automatic calibration tool in eight channels control MCU,
Channel hop module, communication module and the power circuit for powering for modules are connected with after the channel hop module
For accessing eight paths lines to detect the current wiring terminal of electric current and for accessing eight paths lines to detect the electricity of voltage
Crimp line terminals；
The communication module includes channel switch-over control signal input terminal and channel switch-over control signal output end, channel
Switch-over control signal output end is connect with the channel switch-over control signal receiving end of control MCU, and the interchannel of the control MCU is jumped
Turn control signal output to connect with channel hop module.
More preferred, the channel hop module includes that channel switches total relay, current channel relay group and electricity
Pressure passageway relay group, the current channel relay group include that eight Dui Yu, the eight road current channel that is arranged in parallel is one-to-one
Current channel relay, the voltage channel relay group include that eight Ge Yu, the eight road voltage channel that is arranged in parallel is one-to-one
Voltage channel relay is serially connected with a current wiring terminal, each voltage after each current channel relay
A voltage wiring terminal is serially connected with after the relay of channel；The voltage/current channel switch-over control signal output of the control MCU
The input terminal for switching total relay with channel is held to connect, the channel switches the output end and current channel relay of total relay
Group connection, the interchannel jump control signal output and connect with current channel relay group and voltage channel relay group.
More preferred, the control MCU is chip U4, and it is chip U4's that its interchannel, which jumps control signal output,
Pin CX1~CX7, the signal of pin CX1~CX7 output are converted into low and high level signal drawing from chip U1 through chip U1
Foot X1~X7 output, eight current channel relays are connect with pin X1~X7 of U1 respectively, eight voltage channels
Relay is connect with pin X1~X7 of U1 respectively.
More preferred, the voltage/current channel switch-over control signal output end of the control MCU is pin CX9, described
The signal of pin CX9 output is converted into low and high level signal through chip U3 and exports from the pin X9 of chip U3, the channel switching
Total relay is connect with the pin X9 of chip U3.
More preferred, the power circuit includes the rectifier bridge for connecting transformer output end, the rectifier bridge
Anode has been sequentially connected in series voltage-stablizer U5, voltage-stablizer U6 and voltage-stablizer U7, and the cathode of the rectifier bridge is in series with voltage-stablizer U8, described
The input terminal and output end of voltage-stablizer U5 is connected separately with filter capacitor C7 and filter capacitor C5, the input terminal of the voltage-stablizer U8
It is connected separately with filter capacitor C14 and filter capacitor C15 with output end, is in series between the output end and ground of the voltage-stablizer U7
Resistance R15 and light emitting diode D21.
More preferred, the structure of eight pairs of current channel relays is identical, and each pair of current channel relay is equal
What the current channel relay connecting including one with current wiring terminal anode and one connect with current wiring terminal cathode
Current channel relay.
It is more preferred, relay K10 is equipped in the automatic calibration tool in eight channels, the automatic calibration tool in eight channels is equipped with
It is born for accessing the multimeter connecting terminal of multimeter, the current divider connecting terminal for accessing current divider and for accessing resistance
The input terminal of the ohmic load connecting terminal of load, the relay K10 is connect with multimeter connecting terminal, output end and current divider
Connecting terminal is connected with ohmic load connecting terminal.
More preferred, the communication module is chip U2, and the chip U2 receives the logical of computer input by pin RX
Road switch-over control signal, and exported the channel switch-over control signal to the RX pin of control MCU by the pin RX of chip U3.
The utility model has the following beneficial effects: the automatic calibration tool in eight channels uses eight paths, every paths use two
A relay carrys out switching electric current, a relay switches voltage, and a relay controls multimeter access, passes through host computer
Communication between battery detection equipment carrys out switching channel selection, to realize the switching and 1 of current channel and voltage channel
Number channel is jumped to No. 8 interchannels, realizes the calibration in 8 channels.This tooling correcting current uses external current divider, voltage calibration
Using outer connecting resistance, after opening channel calibration, it is soft that host computer is uploaded to by data after multimeter detection load both end voltage
Part successively carries out the Current Voltage calibration in eight channels.
Detailed description of the invention
Fig. 1 is the automatic calibration tool internal links functional block diagram in eight channel of the utility model；
Fig. 2 is the circuit diagram of control MCU in the automatic calibration tool in eight channel of the utility model；
Fig. 3 is the circuit diagram of communication module in the automatic calibration tool in eight channel of the utility model；
Fig. 4 is one in the total relay of the utility model channel hop module internal passage switching, current channel relay group
Divide the connection circuit diagram of current channel relay；
Fig. 5 is another part current channel relay in current channel relay group in the utility model channel hop module
Connection circuit diagram；
Fig. 6 is the connection circuit diagram of voltage channel relay group in the utility model channel hop module；
Fig. 7 is the circuit diagram of the utility model power supply；
Fig. 8 is that the automatic calibration tool in eight channel of the utility model uses wiring diagram.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, convenient for being well understood
The utility model, but they do not constitute the utility model and limit.
As shown in Figure 1, a kind of automatic calibration tool in eight channels, be integrated in the automatic calibration tool in eight channels control MCU,
Channel hop module, communication module and the power circuit for powering for modules are connected with after the channel hop module
For accessing the current wiring terminal and voltage wiring terminal of eight paths lines.
As shown in Fig. 2, communication module U2 model TL082, it includes channel switch-over control signal input terminal (the 3 of TL082
Pin) and channel switch-over control signal output end (1 pin of TL082), control signal input connects from the RX of data-interface J4
The data and control signal (including channel switch-over control signal) that computer issues are received, chip U3 (model is then sent to
ULN2003 4 pins), then the channel switch-over control signal is sent to control MCU by 13 pin RX.And control MCU output
Control signal include but is not limited to that interchannel jumps control signal and voltage/current channel switch-over control signal.
As shown in figure 3, controlling MCU as chip U4, model STM32F103RCT6, its interchannel jumps control signal
Pin CX1~CX7 that output end is chip U4, the signal of pin CX1~CX7 output are converted into low and high level through chip U1
Signal is exported from pin X1~X7 of chip U1.And voltage/current channel switch-over control signal is exported through 62 pin CX9 to chip
U3, then low and high level is converted by chip U3 and is exported from its 13 pins.
Channel hop module includes that channel switches total relay, current channel relay group and voltage channel relay group.
Current channel relay group includes the one-to-one current channel relay of eight Dui Yu, eight road current channel being arranged in parallel, and eight pairs
The structure of the current channel relay is identical, each pair of current channel relay include one with current wiring terminal just
The current channel relay and a current channel relay being connect with current wiring terminal cathode of pole connection.Voltage channel after
Electric appliance group includes the one-to-one voltage channel relay of eight Ge Yu, eight road voltage channel being arranged in parallel, and each electric current is logical
It is serially connected with a current wiring terminal after road relay, is serially connected with a voltage link after each voltage channel relay
Terminal.
As shown in figures 4-6, interchannel jumps control signal output and current channel relay group and voltage channel relay
The connection of device group.Eight current channel relays are connect with pin X1~X7 of U1 respectively, eight voltage channel relays
Device is connect with pin X1~X7 of U1 respectively.Current wiring terminal be P1~P8, each current wiring terminal include anode and
Cathode, if current wiring terminal P1 includes anode I3+&V3+ and cathode I3-&V3-, the contact of current channel relay K1~K8
Switch ends are separately connected channel and switch the end IN of total relay K9 switch contacts and the anode of current wiring terminal P1~P8, electricity
Coil connection+12v the voltage of circulation road relay K1~K8 and pin X1~X7 pin of U1.Current channel relay K11~
The switch contacts both ends of K18 are separately connected the end I-&V of multimeter connecting terminal P9 and the cathode of current wiring terminal P1~P8,
Coil connection+12v the voltage of current channel relay K11~K18 and pin X1~X7 pin of U1.Voltage wiring terminal is J9
~J16, voltage channel relay are K19~K26, two of each voltage wiring terminal inputs respectively with each voltage channel after
The OUT1 of electric appliance is connected with OUT2.The coil both ends of voltage wiring terminal are separately connected+12v voltage and pin X1~X7 of U1 draws
Foot.
Relay K10 is equipped in the automatic calibration tool in eight channels, the automatic calibration tool in eight channels is equipped with for accessing ten thousand
With the battery terminal P9 of table 10, multimeter connecting terminal J2, the current divider connecting terminal J1 for accessing current divider 8 and use
In the ohmic load connecting terminal P10 of access ohmic load 4.The input terminal IN1 and IN2 and multimeter terminals of relay K10
The V+ of sub- J2 is connected with V-, and output end OUT1 and OUT2 are connect with the R1+ and R1- of ohmic load connecting terminal P10 respectively,
OUT1_A and OUT2_A is connect with current divider connecting terminal J1.Channel switches the end OUT_A of total relay K9 switch contacts and divides
The end the IN connection of device connecting terminal J1 is flowed, channel switches total relay K9 coil both ends connection+12v voltage and the pin X9 of U3 draws
Foot.The OUT terminal of current divider connecting terminal J1 is connect with the BRT+ of battery terminal P9.Channel switches the shutdown of total relay K9
Correcting current mode or voltage calibration mode are allowed hand over, and relay K10 is used in correcting current mode or voltage calibration mould
When formula, the voltage of current divider 8 and ohmic load 4 is detected as needed.
As shown in fig. 7, power circuit includes the rectifier bridge D20, the rectifier bridge D20 for connecting transformer output end J5
Anode be sequentially connected in series voltage-stablizer U5, voltage-stablizer U6 and voltage-stablizer U7, the cathode of the rectifier bridge D20 is in series with voltage-stablizer
The input terminal and output end of U8, the voltage-stablizer U5 are connected separately with filter capacitor C7 and filter capacitor C5, the voltage-stablizer U8
Input terminal and output end be connected separately with the output end and ground of filter capacitor C14 and filter capacitor C15, the voltage-stablizer U7
Between be in series with resistance R15 and light emitting diode D21.Wherein ,+15v the voltage that voltage-stablizer U5 is used to input is converted into+12v electricity
Pressure the output, -15v voltage that voltage-stablizer U8 is used to input are converted into -12v voltage output.Voltage-stablizer U6 is used for+12v voltage
It is converted into+5v voltage output, voltage-stablizer U7 is used to convert+3.3v voltage output for+5v voltage.
As shown in figure 8, the automatic calibration tool 3 in eight channels is examined by eight paths lines 2 and first serial connection 6 and battery
Measurement equipment 1 connect, connect by second serial connection 12 with computer 5, by multimeter connecting line 9 connection multimeter 10, ten thousand
It is connect by third serial port communication line 11 with computer 5 with table 10, the automatic calibration tool 3 in eight channels is connected by current divider channel line 7
It is connected to current divider 8.After accessing the present apparatus by the way of Fig. 8, channel debugging calibration command is assigned by computer upper computer software, from
After dynamic calibrator (-ter) unit captures order, corresponding channel is connected, interchannel has electric current and flows through, if carrying out correcting current, ten thousand
8 both end voltage of current divider can be acquired with table 10, computer 5 is then uploaded to by RS232 serial ports and is handled, if carrying out voltage
Calibration has corresponding relay for multimeter 10 and accesses 4 both ends of ohmic load, and multimeter 10 can acquire 4 liang of ohmic load
End voltage is uploaded to computer 5 and carries out data processing, completes eight channel calibrations with this.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. a kind of automatic calibration tool in eight channels, it is characterised in that: be integrated in the automatic calibration tool in eight channels control MCU,
Channel hop module, communication module and the power circuit for powering for modules are connected with after the channel hop module
For accessing eight paths lines to detect the current wiring terminal of electric current and for accessing eight paths lines to detect the electricity of voltage
Crimp line terminals；
The communication module includes channel switch-over control signal input terminal and channel switch-over control signal output end, channel switching
Control signal output is connect with the channel switch-over control signal receiving end of control MCU, and the interchannel of the control MCU jumps control
Signal output end processed is connect with channel hop module.
2. the automatic calibration tool in eight channels according to claim 1, it is characterised in that: the channel hop module includes logical
Road switches total relay, current channel relay group and voltage channel relay group, and the current channel relay group includes simultaneously
Join the one-to-one current channel relay of eight Dui Yu, eight road current channel of setting, the voltage channel relay group includes simultaneously
The one-to-one voltage channel relay of eight Ge Yu, eight road voltage channel for joining setting, after each current channel relay
It is serially connected with a current wiring terminal, is serially connected with a voltage wiring terminal after each voltage channel relay；The control
The voltage/current channel switch-over control signal output end of MCU processed is connect with the input terminal that channel switches total relay, the channel
The output end for switching total relay is connect with current channel relay group, and the interchannel jumps control signal output and electric current
Channel relay group is connected with voltage channel relay group.
3. the automatic calibration tool in eight channels according to claim 2, it is characterised in that: the control MCU is chip U4, it
Interchannel jump pin CX1~CX7 that control signal output is chip U4, the signal warp of pin CX1~CX7 output
Chip U1 be converted into low and high level signal from pin X1~X7 of chip U1 export, eight current channel relays respectively with
Pin X1~X7 connection of U1, eight voltage channel relays are connect with pin X1~X7 of U1 respectively.
4. the automatic calibration tool in eight channels according to claim 3, it is characterised in that: the voltage/current of the control MCU
Channel switch-over control signal output end is pin CX9, and the signal of the pin CX9 output is converted into low and high level letter through chip U3
Number from the pin X9 of chip U3 export, the channel switches total relay and connect with the pin X9 of chip U3.
5. the automatic calibration tool in eight channels according to claim 1, it is characterised in that: the power circuit includes for connecting
The rectifier bridge of transformer output end is connect, the anode of the rectifier bridge has been sequentially connected in series voltage-stablizer U5, voltage-stablizer U6 and voltage-stablizer U7,
The cathode of the rectifier bridge is in series with voltage-stablizer U8, and the input terminal and output end of the voltage-stablizer U5 is connected separately with filter capacitor
The input terminal and output end of C7 and filter capacitor C5, the voltage-stablizer U8 are connected separately with filter capacitor C14 and filter capacitor
C15 is in series with resistance R15 and light emitting diode D21 between the output end and ground of the voltage-stablizer U7.
6. the automatic calibration tool in eight channels according to claim 2, it is characterised in that: eight pairs of current channel relays
Structure it is identical, each pair of current channel relay include the current channel being connect with current wiring terminal anode after
Electric appliance and a current channel relay being connect with current wiring terminal cathode.
7. the automatic calibration tool in eight channels according to claim 2, it is characterised in that: set in the automatic calibration tool in eight channels
There is a relay K10, the automatic calibration tool in eight channels is equipped with multimeter connecting terminal for accessing multimeter, for accessing point
Flow the current divider connecting terminal of device and the ohmic load connecting terminal for accessing ohmic load, the input of the relay K10
End is connect with multimeter connecting terminal, and output end is connect with current divider connecting terminal and ohmic load connecting terminal.
8. the automatic calibration tool in eight channels according to claim 4, it is characterised in that: the communication module is chip U2,
The chip U2 receives the channel switch-over control signal of computer input by pin RX, and is led to this by the pin RX of chip U3
Road switch-over control signal is exported to the RX pin of control MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821939566.0U CN209280909U (en) | 2018-11-23 | 2018-11-23 | The automatic calibration tool in eight channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821939566.0U CN209280909U (en) | 2018-11-23 | 2018-11-23 | The automatic calibration tool in eight channels |
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| Publication Number | Publication Date |
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| CN209280909U true CN209280909U (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821939566.0U Active CN209280909U (en) | 2018-11-23 | 2018-11-23 | The automatic calibration tool in eight channels |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305490A (en) * | 2020-10-30 | 2021-02-02 | 海南电网有限责任公司 | Multiloop automatic switching control equipment |
| CN115684933A (en) * | 2022-11-11 | 2023-02-03 | 东莞光亚智能科技有限公司 | Parallel calibration tool for lithium battery formation and capacity grading equipment |
-
2018
- 2018-11-23 CN CN201821939566.0U patent/CN209280909U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305490A (en) * | 2020-10-30 | 2021-02-02 | 海南电网有限责任公司 | Multiloop automatic switching control equipment |
| CN115684933A (en) * | 2022-11-11 | 2023-02-03 | 东莞光亚智能科技有限公司 | Parallel calibration tool for lithium battery formation and capacity grading equipment |
| CN115684933B (en) * | 2022-11-11 | 2023-08-25 | 东莞光亚智能科技有限公司 | Parallel calibration tool for lithium battery formation component equipment |
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