CN108957139A - A kind of multichannel resistance measuring instrument - Google Patents
A kind of multichannel resistance measuring instrument Download PDFInfo
- Publication number
- CN108957139A CN108957139A CN201811051452.7A CN201811051452A CN108957139A CN 108957139 A CN108957139 A CN 108957139A CN 201811051452 A CN201811051452 A CN 201811051452A CN 108957139 A CN108957139 A CN 108957139A
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- circuit
- circuit board
- controlling unit
- resistance measuring
- usb
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- 238000005259 measurement Methods 0.000 claims abstract description 24
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims description 9
- 230000006870 function Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000012790 confirmation Methods 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000270722 Crocodylidae Species 0.000 description 1
- 102100029768 Histone-lysine N-methyltransferase SETD1A Human genes 0.000 description 1
- 101000865038 Homo sapiens Histone-lysine N-methyltransferase SETD1A Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention belongs to electronic measuring technology fields, specifically design a kind of multichannel resistance measuring instrument.In the present invention, liquid crystal touch display screen is directly inserted in control circuit board by plug；Micro USB socket one end is connected in control circuit board, and the other end is for connecting external power supply；USB socket one end is connected in control circuit board, and the other end is for connecting External memory equipment；Ground line one end is shelved with host machine to be connect, and the other end is connected in control circuit board；Shell is for encapsulating control circuit board, liquid crystal touch display screen, Micro USB socket, USB socket.The present invention can efficiently, quickly solve the problems, such as the measurement of aisle resistance in large number of engine speed signal path.
Description
Technical field
The invention belongs to electronic measuring technology fields, specifically design a kind of multichannel resistance measuring instrument.
Background technique
Measuring resistance, there are commonly bridge method, electric resistance partial pressure method, electric current testings etc..Electric resistance partial pressure method measuring resistance realizes ratio
It is easier to, cost is relatively low, is current using a kind of relatively more extensive resistance measurement method, common digital multimeter is generally all adopted
The measurement of resistance is realized with electric resistance partial pressure method.In specific work process, it is necessary to by the channel electricity for measuring tach signal channel
Resistance is to judge whether the speed probe inside host is intact.Since host number is numerous, digital multimeter can only measure every time
The aisle resistance in one tach signal channel measures the aisle resistance of engine speed signal path with digital multimeter, work
Amount is very big, and working efficiency is very low.
With the aisle resistance of ordinary numbers multimeter measurement centrifuge speed signal path, 2 people, one group of cooperating is needed,
One people is responsible for measuring resistance, and another people records measurement result, and test pencil and measuring point are easy to poor contact, lead to measurement result
Error is larger, and measurement result is also required to manually be judged one by one, and working efficiency polar region is low, and human cost is higher.
The measuring device of 20 resistance still can be disposably measured on domestic market without one kind.
Summary of the invention
Present invention solves the technical problem that: the present invention provides a kind of multichannel resistance measuring instrument, can efficiently, quickly solve
The measurement problem of aisle resistance in certainly large number of engine speed signal path.
The technical solution adopted by the present invention:
A kind of multichannel resistance measuring instrument, including plug, connection, control circuit board, liquid crystal touch display screen, Micro
USB socket, USB socket, ground line, shell；One end of plug and connection is by being welded to connect, the other end of connection and control
Circuit board connection processed；Control circuit board is connected with liquid crystal touch display screen, Micro USB socket, USB socket, ground line respectively
It connects.
Liquid crystal touch display screen is directly inserted in control circuit board by plug；Micro USB socket one end is connected to control
On circuit board processed, the other end is for connecting external power supply；USB socket one end is connected in control circuit board, and the other end is for connecting
Connect External memory equipment；Ground line one end is shelved with host machine to be connect, and the other end is connected in control circuit board；Shell is for sealing
Fill control circuit board, liquid crystal touch display screen, Micro USB socket, USB socket.
The socket that the plug is shelved with host matches.
The control circuit board includes resistance measuring circuit, ARM controlling unit circuit, USB-A interface circuit, channel switching
Control circuit, Micro USB-B interface circuit, LCD display interface circuit；
Resistance measuring circuit passes through the route and ARM controlling unit circuit and channel control switching circuit in control circuit board
It is connected, receives the resistance signal from channel control switching circuit, and send measurement result to ARM controlling unit circuit；
ARM controlling unit circuit includes embedded ARM processor, is mainly responsible for the functions such as data processing, storage, communication,
It is connect by the route on circuit board with resistance measuring circuit, USB-A interface circuit, channel control switching circuit, Micro USB-B
Mouth circuit, the connection of LCD display interface circuit, receive and connect from resistance measuring circuit, USB-A interface circuit, Micro USB-B
The data of mouth circuit, LCD display interface circuit, and connect to USB-A interface circuit, channel control switching circuit, LCD display
Mouth circuit sends data；
USB-A interface circuit imports the data being stored in ARM controlling unit in computer, while can also pass through it
It receives computer and is sent to ARM controlling unit circuit, be connected by the route on circuit board with ARM controlling unit circuit；
Channel control switching circuit, including 4 integrated chips and several resistance, capacitor are responsible for cutting for 20 Measurement channels
It changes, is connected by the route on circuit board with resistance measuring circuit and ARM controlling unit circuit, received single from ARM control
The control signal of first circuit transmits resistance signal to resistance measuring circuit；
Micro USB-B interface circuit further includes charging circuit, by it can for multichannel resistance measuring instrument charging and
Working power is provided, Micro USB-B interface circuit passes through the route and resistance measuring circuit, ARM controlling unit on circuit board
Circuit, USB-A interface circuit, channel control switching circuit, the connection of LCD display interface circuit；
LCD display interface circuit is the communication interface between LCD display and ARM controlling unit, is responsible for LCD display
Data communication between ARM controlling unit passes through the route and ARM controlling unit circuit and Micro USB-B on circuit board
Interface circuit connection.
It include application layer and device drive layer in the arm processor, application layer software is mainly responsible for data analysis and place
Reason, driving layer software are added data acquisition module, resistance detection channel control module, the LCD screen display driving mould of dma mode by AD
The touch acquisition drive module composition of block, touch screen.
Measurement work needs to select the address of tested host before starting, host address setting include group address selection key (1),
Sector address selection key (2), column address selection key (3), truncation group address selection key (4), function key (5)；Group address selection
Key (1) is for selecting group address, and sector address selection key (2) is selected for sector address, and column address selection key (3) is for selecting
Select column address, truncation group address selection key (4) for selecting truncation group address, function key (5) include Set, OK, Save 3 by
Key, Set key for select unit, section, column, truncation group address, after press OK key confirmation address, automatically generate filename,
Then start measurement resistance to press SAVE key after the aisle resistance measurement of one truncation group All hosts, can will measure
As a result it is stored in corresponding file.
Beneficial effects of the present invention:
A kind of multichannel resistance measuring instrument provided by the invention, can greatly increase rate working efficiency, save manpower at
This, generates good economic benefit.
Detailed description of the invention
Fig. 1 is a kind of multichannel resistance measuring instrument structural schematic diagram provided by the invention；
Fig. 2 is control circuit board structural schematic diagram of the present invention；
Fig. 3 is host address set interface figure；
In figure: 1- group address selection key；2- sector address selection key；3- column address selection key；Group address choosing is truncated in 4-
Select key；5- function key.
Specific embodiment
It is further detailed to a kind of multichannel resistance measuring instrument work provided by the invention in the following with reference to the drawings and specific embodiments
It describes in detail bright.
As shown in Figure 1, a kind of multichannel resistance measuring instrument provided by the invention, including 20 core plugs, 20 core connections, control
Circuit board processed, liquid crystal touch display screen, Micro USB socket, USB socket, ground line, shell；
One end of 20 core plugs and 20 core connections is by being welded to connect, the other end and control circuit board of 20 core connections
Connection；Control circuit board is connected with liquid crystal touch display screen, Micro USB socket, USB socket, ground line respectively；Liquid crystal touching
Display screen is touched to be directly inserted in control circuit board by the plug of an ID50 type；Micro USB socket one end is directly welded at
In control circuit board, the other end is for connecting external power supply；USB socket one end is directly welded in control circuit board, the other end
For connecting External memory equipment；There is a crocodile clip in ground line one end, can be directly sandwiched in the earth stud that host machine is shelved
On, the other end is directly welded in control circuit board；Metal shell for encapsulate control circuit board, liquid crystal touch display screen,
Micro USB socket, USB socket.
The 20 core sockets that 20 core plugs are shelved with host match.
As shown in Fig. 2, control circuit board includes 1- resistance measuring circuit, 2-ARM control unit circuit, 3-USB-A interface
Circuit, the channel 4- control switching circuit, 5-Micro USB-B interface circuit, 6-LCD display screen interface circuit；
Wherein resistance measuring circuit measures resistance using common electric resistance partial pressure method, and main devices are resistance and capacitor, leads to
The route crossed in control circuit board is connected with ARM controlling unit circuit and channel control switching circuit, and reception is cut from channel
The resistance signal of control circuit is changed, and sends measurement result to ARM controlling unit circuit；
ARM controlling unit circuit mainly includes STM32F427 type embedded ARM processor, is mainly responsible for data processing, deposits
The functions such as storage, communication pass through the route and resistance measuring circuit, USB-A interface circuit, channel switching control electricity on circuit board
Road, Micro USB-B interface circuit, the connection of LCD display interface circuit are received from resistance measuring circuit, USB-A interface electricity
Road, Micro USB-B interface circuit, LCD display interface circuit data, and to USB-A interface circuit, channel switching control
Circuit, LCD display interface circuit send data；
USB-A interface circuit is the usb circuit of a standard, can will be stored in ARM controlling unit by it
Data import computer in, while can also by it receive computer be sent to ARM controlling unit circuit, pass through circuit board
On route be connected with ARM controlling unit circuit；
Channel control switching circuit, including 4 integrated chips and several resistance, capacitor are responsible for cutting for 20 Measurement channels
It changes, is connected by the route on circuit board with resistance measuring circuit and ARM controlling unit circuit, received single from ARM control
The control signal of first circuit transmits resistance signal to resistance measuring circuit；
Micro USB-B interface circuit further includes charging circuit, by it can for multichannel resistance measuring instrument charging and
Working power is provided, Micro USB-B interface circuit passes through the route and resistance measuring circuit, ARM controlling unit on circuit board
Circuit, USB-A interface circuit, channel control switching circuit, the connection of LCD display interface circuit；
LCD display interface circuit is the communication interface between LCD display and ARM controlling unit, is responsible for LCD display
Data communication between ARM controlling unit passes through the route and ARM controlling unit circuit and Micro USB-B on circuit board
Interface circuit connection.
Measurement result stores in one file as unit of stage group, and filename is with unit, section, column, truncation group
Address is named, and subsequent data processing is convenient for, and therefore, measurement work needs to select the address of tested host before starting, host
Location set interface is as shown in Figure 3.There is operation interface shown in Fig. 3 after pressing Set1 key, in figure in 1 region of group address selection key
There are J01-J16 totally 16 keys, for selecting group address, there are QD1-QD4 totally 4 keys in 2 section of sector address selection key,
It is selected for sector address, has A, B, C, D4 keys in 3 region of column address selection key, for selecting column address, truncation group
There are JD1-JD4 totally 4 keys in 4 region of location selection key, for selecting truncation group address, Set, OK, Save in 5 region of function key
Totally 3 keys can start to select unit, section, column, truncation group address, OK key confirmation ground is pressed after selection after pressing Set
Location, automatically generates filename, then starts measurement resistance and presses after the aisle resistance measurement of one truncation group All hosts
Measurement result can be stored in corresponding file by lower SAVE key.
There is special-purpose software in the arm processor of multichannel resistance measuring instrument, software includes application layer and device drive layer, is answered
It is mainly responsible for data analysis and processing with layer software, driving layer software is added data acquisition module, the resistance detection of dma mode by AD
The touch of channel control module, LCD screen driver module, touch screen acquires drive module composition.
Claims (6)
1. a kind of multichannel resistance measuring instrument, it is characterised in that: shown including plug, connection, control circuit board, LCD touch
Screen, Micro USB socket, USB socket, ground line, shell；One end of plug and connection, which passes through, to be welded to connect, connection
The other end is connect with control circuit board；Control circuit board respectively with liquid crystal touch display screen, Micro USB socket, USB socket,
Ground line is connected.
2. a kind of multichannel resistance measuring instrument according to claim 1, it is characterised in that: liquid crystal touch display screen is by inserting
Head is directly inserted in control circuit board；Micro USB socket one end is connected in control circuit board, and the other end is for connecting outside
Power supply；USB socket one end is connected in control circuit board, and the other end is for connecting External memory equipment；It is grounded one end and master
Machine machine shelves connection, and the other end is connected in control circuit board；Shell for encapsulate control circuit board, liquid crystal touch display screen,
Micro USB socket, USB socket.
3. a kind of multichannel resistance measuring instrument according to claim 2, it is characterised in that: the plug and host are shelved
Socket match.
4. a kind of multichannel resistance measuring instrument according to claim 2, it is characterised in that: the control circuit board includes electricity
Hinder measuring circuit, ARM controlling unit circuit, USB-A interface circuit, channel control switching circuit, Micro USB-B interface electricity
Road, LCD display interface circuit；
Resistance measuring circuit is connected by the route in control circuit board with ARM controlling unit circuit and channel control switching circuit
It connects, receives the resistance signal from channel control switching circuit, and send measurement result to ARM controlling unit circuit；
ARM controlling unit circuit includes embedded ARM processor, is mainly responsible for the functions such as data processing, storage, communication, passes through
Route and resistance measuring circuit, USB-A interface circuit, channel control switching circuit, Micro USB-B interface electricity on circuit board
Road, the connection of LCD display interface circuit are received from resistance measuring circuit, USB-A interface circuit, Micro USB-B interface electricity
Road, LCD display interface circuit data, and to USB-A interface circuit, channel control switching circuit, LCD display interface electricity
Road sends data；
USB-A interface circuit imports the data being stored in ARM controlling unit in computer, while can also be received by it
Computer is sent to ARM controlling unit circuit, is connected by the route on circuit board with ARM controlling unit circuit；
Channel control switching circuit, including 4 integrated chips and several resistance, capacitor are responsible for the switching of 20 Measurement channels, lead to
Route on oversampling circuit plate is connected with resistance measuring circuit and ARM controlling unit circuit, receives and comes from ARM controlling unit circuit
Control signal, to resistance measuring circuit transmit resistance signal；
Micro USB-B interface circuit further includes charging circuit, can charge and provide for multichannel resistance measuring instrument by it
Working power, Micro USB-B interface circuit by route on circuit board and resistance measuring circuit, ARM controlling unit circuit,
USB-A interface circuit, channel control switching circuit, the connection of LCD display interface circuit；
LCD display interface circuit is the communication interface between LCD display and ARM controlling unit, be responsible for LCD display with
Data communication between ARM controlling unit is connect by the route on circuit board with ARM controlling unit circuit and Micro USB-B
Mouth circuit connection.
5. a kind of multichannel resistance measuring instrument according to claim 4, it is characterised in that: include in the arm processor
Application layer and device drive layer, application layer software are mainly responsible for data analysis and processing, layer software are driven to add dma mode by AD
The touch of data acquisition module, resistance detection channel control module, LCD screen driver module, touch screen acquires drive module
Composition.
6. a kind of multichannel resistance measuring instrument according to claim 5, it is characterised in that: measurement work needs to select before starting
The address of tested host, host address setting include group address selection key (1), sector address selection key (2), column address selection
Key (3), truncation group address selection key (4), function key (5)；Group address selection key (1) is for selecting group address, section
Location selection key (2) is selected for sector address, and column address selection key (3) is truncated group address selection key (4) for selecting column address
For selecting that group address is truncated, function key (5) includes 3 keys of Set, OK, Save, Set key for select unit, section,
Column, truncation group address, after press OK key confirmation address, automatically generate filename, then start measure resistance, a truncation group
After the aisle resistance measurement of All hosts, SAVE key is pressed, measurement result can be stored in corresponding file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051452.7A CN108957139A (en) | 2018-09-10 | 2018-09-10 | A kind of multichannel resistance measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051452.7A CN108957139A (en) | 2018-09-10 | 2018-09-10 | A kind of multichannel resistance measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108957139A true CN108957139A (en) | 2018-12-07 |
Family
ID=64475193
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| CN201811051452.7A Pending CN108957139A (en) | 2018-09-10 | 2018-09-10 | A kind of multichannel resistance measuring instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051300Y (en) * | 2007-07-03 | 2008-04-23 | 江苏斯菲尔电气有限公司 | Multi-function power meter with radio data transmission communication interface |
| KR20130068354A (en) * | 2011-12-15 | 2013-06-26 | 삼성전자주식회사 | Channel switching device, impedance measuring system, and controlling method thereof |
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| CN203606411U (en) * | 2013-11-25 | 2014-05-21 | 中国人民解放军63908部队 | ARM-based portable detector |
| CN105675995A (en) * | 2016-02-01 | 2016-06-15 | 凯迈(洛阳)电子有限公司 | Embedded multi-channel automatic resistance measurement module |
| CN106771632A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Multi-channel DC resistance meter |
| CN106824568A (en) * | 2016-11-18 | 2017-06-13 | 中核兰州铀浓缩有限公司 | Centrifugation cascade main plot section blow-washing method |
| CN108008191A (en) * | 2017-11-06 | 2018-05-08 | 湖北三江航天万峰科技发展有限公司 | A kind of precision aid of Minitype resistance |
| CN209102806U (en) * | 2018-09-10 | 2019-07-12 | 中核陕西铀浓缩有限公司 | A kind of multichannel resistance measuring instrument |
-
2018
- 2018-09-10 CN CN201811051452.7A patent/CN108957139A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051300Y (en) * | 2007-07-03 | 2008-04-23 | 江苏斯菲尔电气有限公司 | Multi-function power meter with radio data transmission communication interface |
| KR20130068354A (en) * | 2011-12-15 | 2013-06-26 | 삼성전자주식회사 | Channel switching device, impedance measuring system, and controlling method thereof |
| CN103558487A (en) * | 2013-08-08 | 2014-02-05 | 江西洪都航空工业集团有限责任公司 | Initiating explosive device circuit detection system |
| CN203606411U (en) * | 2013-11-25 | 2014-05-21 | 中国人民解放军63908部队 | ARM-based portable detector |
| CN105675995A (en) * | 2016-02-01 | 2016-06-15 | 凯迈(洛阳)电子有限公司 | Embedded multi-channel automatic resistance measurement module |
| CN106824568A (en) * | 2016-11-18 | 2017-06-13 | 中核兰州铀浓缩有限公司 | Centrifugation cascade main plot section blow-washing method |
| CN106771632A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Multi-channel DC resistance meter |
| CN108008191A (en) * | 2017-11-06 | 2018-05-08 | 湖北三江航天万峰科技发展有限公司 | A kind of precision aid of Minitype resistance |
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