CN207036959U - A kind of detection device for detecting conducting resistance - Google Patents
A kind of detection device for detecting conducting resistance Download PDFInfo
- Publication number
- CN207036959U CN207036959U CN201720909814.6U CN201720909814U CN207036959U CN 207036959 U CN207036959 U CN 207036959U CN 201720909814 U CN201720909814 U CN 201720909814U CN 207036959 U CN207036959 U CN 207036959U
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- module
- processing module
- main control
- data
- conducting resistance
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Abstract
The utility model discloses a kind of detection device for detecting conducting resistance, it is connected including resistance measuring module with main control processing module, main control processing module is connected with interface module, the conducting resistance data detected are sent to main control processing module and handled by resistance measuring module, the control information that the main control processing module receiving interface module is sent, and the result after processing is transmitted to interface module.The resistance measuring module includes AFE(analog front end) and analog-to-digital conversion module, the AFE(analog front end) receives the signal that main control processing module is sent and conducting resistance data is acquired, by the signal of collection after analog-to-digital conversion module is handled, the data after processing are sent to main control processing module.
Description
Technical field
It the utility model is related to a kind of detection device, and in particular to a kind of detection device for detecting conducting resistance.
Background technology
The measurement of resistance value is generally straightforward.But for the measurement of very small resistance, we must careful attention I
The hypothesis done.For specific geometry, such as electric wire, Kelvin methods are point-device.It can use similar
Method measures the body resistivity of Uniform Sample and surface resistivity, but used formula is different.In these cases, it is necessary to
Consider probe spacing and sample thickness.Only precision can not be ensured in itself with Kelvin methods.If it is laid out and connects number
Change, the resistance for the non-homogeneous geometry that is difficult to calculate to a nicety.
One of most important characteristics of MOSFET are exactly the conducting resistance (RDS (on)) of drain-to-source.In encapsulation completion
It is very simple that RDS (on) is measured afterwards, but the value is measured with wafer form and has more its advantage.Originally it is that utility model is to pass through control
Module is controlled to AFE(analog front end), realizes accurate detection.
Utility model content
Technical problem to be solved in the utility model is that conducting resistance is detected at present, can only detect smaller range
Interior conduction resistance value, it is impossible to change test side as needed and carry out large-scale accurate detection, the purpose of this utility model exists
In providing a kind of detection device for detecting conducting resistance, solve the problems, such as above-mentioned.
The utility model is achieved through the following technical solutions：
A kind of detection device for detecting conducting resistance, including resistance measuring module are connected with main control processing module, master control
Processing module processed is connected with interface module, and the conducting resistance data detected are sent to main control and handle mould by resistance measuring module
Block is handled, the control information that the main control processing module receiving interface module is sent, and the result after processing is transmitted
To interface module.
Further, the resistance measuring module includes AFE(analog front end) and analog-to-digital conversion module, and the AFE(analog front end) receives
The signal that main control processing module is sent is acquired to conducting resistance data, by the signal of collection by analog-to-digital conversion module
After reason, the data after processing are sent to main control processing module.
Further, the AFE(analog front end) includes cable connector, relay array, constant-current source, modulate circuit and program control put
Big device, the cable connector gathers conducting resistance data, and sends data in relay array, and relay array passes through master
Control process module is adjusted, and the data of transmission are sent to modulate circuit, and constant-current source is connected with modulate circuit, conditioning electricity
Road sends the data after processing into programmable amplifier, and is sent by programmable amplifier to analog-to-digital conversion module, the journey
Control amplifier receives the adjustment that main control processing module is amplified multiple.
Further, the main control processing module includes memory modules, flash memory module, processing module, display module, institute
Memory modules are stated to be connected with processing module, flash memory module is connected with processing module, processing module by the data after processing send to
Display module is shown that interface module is connected with processing module, carries out data exchange.
Further, the interface module includes CAN drivers, RS485 drivers, CAN drivers and RS485 drivers
It is connected respectively using different bus systems with processing module.
Main control processing module in the utility model uses polycaryon processor, can carry out the place of different pieces of information simultaneously
Reason, using fixed processing system, can be run independently of FPGA, and processing module is started when resetting, just as appointing
What device or ASSP based on processor is the same.Processing module is used as " system master unit ", available for controlling FPGA
Configuration, realize that complete or part reconfigures function to FPGA during operation to realize.Inside possesses this two kinds always
Lane controller, this two kinds of buses are may make up plus driver in outside, CAN drivers therein send survey using CAN
Examination order, after tested measurement equipment receives order and responds, self-test information is sent automatically by CAN, the system connects
After receiving these information, show, while store into system storage on display module immediately.RS485 therein
Driver is divided into two-way, and all the way for control process module, another way is used to send detection information to host computer.
The utility model compared with prior art, has the following advantages and advantages：
1st, a kind of detection device for detecting conducting resistance of the utility model, interface data exchange is carried out by two kinds of buses,
It can ensure that data transfer is accurate；
2nd, a kind of detection device for detecting conducting resistance of the utility model, AFE(analog front end) is controlled by processing module, can
Need to be adjusted according to user；
3rd, a kind of detection device for detecting conducting resistance of the utility model, is provided with display module, facilitates user to understand and sets
Standby state.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, the restriction to the utility model embodiment is not formed.In the accompanying drawings：
Fig. 1 is Tthe utility model system connection diagram.
Fig. 2 is the utility model AFE(analog front end) connection diagram.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, it is not intended as to restriction of the present utility model.
Embodiment
As shown in figure 1, a kind of detection device for detecting conducting resistance of the utility model, a kind of detection for detecting conducting resistance
Equipment, including resistance measuring module are connected with main control processing module, and main control processing module is connected with interface module, and resistance is surveyed
Amount module, which sends the conducting resistance data detected to main control processing module, to be handled, and the main control processing module connects
The control information that interface module is sent is received, and the result after processing is transmitted to interface module.
The resistance measuring module includes AFE(analog front end) and analog-to-digital conversion module, and the AFE(analog front end) receives main control processing
The signal that module is sent is acquired to conducting resistance data, by the signal of collection after analog-to-digital conversion module is handled, will be located
Data after reason are sent to main control processing module.According to technical requirements, we select the Zynq of Xilinx companiesTM-7000
Serial SOC is as primary processor, ZynqTM- 7000 family devices are hard by the software programmable ability of processor and FPGA's
Part programmability realizes perfect adaptation, and unmatched systematic function, spirit are realized with system advantages such as low-power consumption and low costs
Activity, scalability.Different from traditional SoC processing solution, the flexible programmable logic of Zynq-7000 devices can be realized
Optimization and differentiation function, allow designer as follows according to the requirement of major applications addition peripheral hardware and accelerator, featureDouble-core CortexTM- A9 MPCore processors.Fixed processing system, it can be run independently of FPGA.Processing
Device is started when resetting, just as any device or ASSP based on processor.Processor is used as " system master list
Member ", available for the configuration of control FPGA, realize that complete or part is matched somebody with somebody again to FPGA during operation to realize
Put function.Standard development flow provides a known programmed environment for software developer.
The AFE(analog front end) includes cable connector, relay array, constant-current source, modulate circuit and programmable amplifier, described
Cable connector gathers conducting resistance data, and sends data in relay array, and relay array is handled by main control
Module is adjusted, and the data of transmission are sent to modulate circuit, and constant-current source is connected with modulate circuit, and modulate circuit will be handled
Data afterwards are sent into programmable amplifier, and are sent by programmable amplifier to analog-to-digital conversion module, the programmable amplifier
Receive the adjustment that main control processing module is amplified multiple.
The main control processing module includes memory modules, flash memory module, processing module, display module, the internal memory mould
Block is connected with processing module, and flash memory module is connected with processing module, and processing module sends the data after processing to display module
It has been shown that, interface module is connected with processing module, carries out data exchange.
The interface module includes CAN drivers, RS485 drivers, and CAN drivers and RS485 drivers use respectively
Different bus systems are connected with processing module.CAN test datas flow to：Detecting system is by CAN to tested measurement equipment
Send test command；Self-test information is returned to detecting system by equipment under test；System shows self-test information by LCD screen, together
When by detection information data Cun Chudao memories；If host computer needs synchronously to check detection information or checked stored
Good data, detection data can be upload the data to host computer by RS485；If desired by the data of storage in screen
Upper playback, the data of storage can be subjected to playback by LCD by data and shown.Possess two-way RS485, be to be used to control all the way
Processing module, communicated all the way with host computer in addition, detection information is sent to host computer.1 road RS485 of control process module, is adopted
With order sending method, after processing module receives order and responds, self-test information is sent from trend detecting system, this is
System receives information and shown on a display screen, while is stored in memory.RS485 upload data be mainly：
CAN equipment self-inspection surveys data, RS485 bus apparatus Autonomous test data, conducting resistance detection data, insulated electro
Hindering and detect data, the data test flow direction of the storage information data RS485 in memory is similar with CAN test, therefore not
Repeat again
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, it is all within the spirit and principles of the utility model, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of the utility model.
Claims (5)
1. a kind of detection device for detecting conducting resistance, it is characterised in that including resistance measuring module and main control processing module
Connection, main control processing module are connected with interface module, and resistance measuring module sends the conducting resistance data detected to master
Control process module is handled, the control information that the main control processing module receiving interface module is sent, and by after processing
Result transmit to interface module.
A kind of 2. detection device for detecting conducting resistance according to claim 1, it is characterised in that the resistance measurement mould
Block includes AFE(analog front end) and analog-to-digital conversion module, and the AFE(analog front end) receives the signal of main control processing module transmission to electric conduction
Resistance data are acquired, and by the signal of collection after analog-to-digital conversion module is handled, the data after processing are sent to main control
In processing module.
A kind of 3. detection device for detecting conducting resistance according to claim 2, it is characterised in that the AFE(analog front end) bag
Cable connector, relay array, constant-current source, modulate circuit and programmable amplifier are included, the cable connector gathers conducting resistance number
According to, and send data in relay array, relay array is adjusted by main control processing module, by the number of transmission
According to sending to modulate circuit, constant-current source is connected with modulate circuit, and modulate circuit sends the data after processing to programming amplifying
In device, and sent by programmable amplifier to analog-to-digital conversion module, the programmable amplifier receives main control processing module and carried out
The adjustment of multiplication factor.
A kind of 4. detection device for detecting conducting resistance according to claim 1, it is characterised in that the main control processing
Module includes memory modules, flash memory module, processing module, display module, and the memory modules are connected with processing module, flash memory mould
Block is connected with processing module, and the data after processing are sent to display module and shown by processing module, interface module and processing
Module connects, and carries out data exchange.
A kind of 5. detection device for detecting conducting resistance according to claim 1, it is characterised in that the interface module bag
CAN drivers, RS485 drivers are included, CAN drivers and RS485 drivers are respectively using different bus systems and processing mould
Block connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720909814.6U CN207036959U (en) | 2017-07-25 | 2017-07-25 | A kind of detection device for detecting conducting resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720909814.6U CN207036959U (en) | 2017-07-25 | 2017-07-25 | A kind of detection device for detecting conducting resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207036959U true CN207036959U (en) | 2018-02-23 |
Family
ID=61462554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720909814.6U Expired - Fee Related CN207036959U (en) | 2017-07-25 | 2017-07-25 | A kind of detection device for detecting conducting resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207036959U (en) |
-
2017
- 2017-07-25 CN CN201720909814.6U patent/CN207036959U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20180725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |