CN107561365A - Detect the monitor station of insulaion resistance - Google Patents
Detect the monitor station of insulaion resistance Download PDFInfo
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- CN107561365A CN107561365A CN201710697223.1A CN201710697223A CN107561365A CN 107561365 A CN107561365 A CN 107561365A CN 201710697223 A CN201710697223 A CN 201710697223A CN 107561365 A CN107561365 A CN 107561365A
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Abstract
The invention discloses the monitor station of detection insulaion resistance, it is connected including resistance measuring module with control process module, control process module is connected with interface module, the insulation resistance data detected is sent to control process module and handled by resistance measuring module, the control information that the control process module receiving interface module is sent, and transmit the result after processing to interface module, detection electric bridge is provided with the resistance measuring module, insulaion resistance detection is carried out by detecting electric bridge.The resistance measuring module includes AFE(analog front end) and analog-to-digital conversion module, the AFE(analog front end) receives the signal that control process module is sent and insulation resistance data is acquired, by the signal of collection after analog-to-digital conversion module is handled, the data after processing are sent to control process module.
Description
Technical field
The present invention relates to a kind of detection device, and in particular to detects the monitor station of insulaion 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 insulaion 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.The present invention is by control module pair
AFE(analog front end) is controlled, and realizes accurate detection.
The content of the invention
The technical problems to be solved by the invention be it is preceding insulaion resistance is detected, can only detect exhausted in smaller range
Edge resistance value, it is impossible to change test side as needed and carry out accurate detection on a large scale, and it is an object of the present invention to provide detection insulaion resistance
Monitor station, solve the problems, such as above-mentioned.
The present invention is achieved through the following technical solutions：
The monitor station of insulaion resistance is detected, including resistance measuring module is connected with control process module, control process module
It is connected with interface module, the insulation resistance data detected is sent to control process module and handled by resistance measuring module,
The control information that the control process module receiving interface module is sent, and the result after processing is transmitted to interface module, institute
State and detection electric bridge is provided with resistance measuring module, insulaion resistance detection is carried out by detecting electric bridge.
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 control process module is sent is acquired to insulation resistance data, and the signal of collection is handled by analog-to-digital conversion module
Afterwards, the data after processing are sent to control process module.
Further, the AFE(analog front end) includes cable connector, relay array, constant-current source, detection electric bridge and program control put
Big device, the cable connector gathers insulation resistance data, and sends data in relay array, and relay array passes through control
Processing module processed is adjusted, and the data of transmission are sent to detection electric bridge, and constant-current source is connected with detection electric bridge, detects electric bridge
Data after processing are sent into programmable amplifier, and sent by programmable amplifier to analog-to-digital conversion module, it is described program control
Amplifier receives the adjustment that control process module is amplified multiple.The measurement of insulaion resistance needs to survey under 250V high pressure
Amount, and need measure multiple conducting wires two-by-two between insulaion resistance, therefore use electric bridge zeroing method test.
Further, the control process module includes memory modules, flash memory module, processing module, display module, described
Memory modules are connected with processing module, and flash memory module is connected with processing module, and processing module sends the data after processing to aobvious
Show that module is shown, interface module is connected with processing module, carries out data exchange.
Further, CAN interface and RS485 interfaces are provided with the interface module, CAN interface is by resistance measurement
Module sends test instruction, after being detected by resistance measuring module, sends to host computer；The RS485 interfaces are in resistance
After measurement module obtains measured data, after control process resume module, send to host computer.The system passes through CAN
Test command is sent, after tested measurement equipment receives order and responds, self-test information is sent automatically by CAN, this
After system receives these information, shown immediately on screen.System shows testing result using LCD, using LCD
The mode of liquid crystal display shows, which advantage is intuitive display, the informative of display, shortcoming be seen under strong light it is not bery clear
Chu.
The present invention compared with prior art, has the following advantages and advantages：
1st, the monitor station of present invention detection insulaion resistance, interface data exchange is carried out by two kinds of buses, number can be ensured
It is accurate according to transmitting；
2nd, the monitor station of present invention detection insulaion resistance, AFE(analog front end) is controlled by processing module, can be according to user's need
It is adjusted；
3rd, the monitor station of present invention detection insulaion resistance, can allow user intuitively to enter to machine operation by LCD
Row understands.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is present system flow chart.
Fig. 2 is AFE(analog front end) system flow chart of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in Figure 1, 2, the monitor station of present invention detection insulaion resistance, the monitor station of insulaion resistance, including resistance are detected
Measurement module is connected with control process module, control process module is connected with interface module, and resistance measuring module will detect
Insulation resistance data sends to control process module and handled, the control that the control process module receiving interface module is sent
Information, and the result after processing is transmitted to interface module, detection electric bridge is provided with the resistance measuring module, passes through detection
Electric bridge carries out insulaion resistance detection.
The resistance measuring module includes AFE(analog front end) and analog-to-digital conversion module, and the AFE(analog front end) receives control process mould
The signal that block is sent is acquired to insulation resistance data, by the signal of collection after analog-to-digital conversion module is handled, will be handled
Data afterwards are sent to control process module.
The AFE(analog front end) includes cable connector, relay array, constant-current source, detection electric bridge and programmable amplifier, described
Cable connector gathers insulation resistance data, and sends data in relay array, and relay array passes through control process mould
Block is adjusted, and the data of transmission are sent to detection electric bridge, and constant-current source is connected with detection electric bridge, after detection electric bridge will be handled
Data send into programmable amplifier, and sent by programmable amplifier to analog-to-digital conversion module, the programmable amplifier connects
Receive the adjustment that control process module is amplified multiple.The measurement of insulaion resistance needs to measure under 250V high pressure, and needs
Insulaion resistance between measuring multiple conducting wires two-by-two, therefore use electric bridge zeroing method test.
The control process module includes memory modules, flash memory module, processing module, display module, the memory modules
It is connected with processing module, flash memory module is connected with processing module, and the data after processing are sent to display module by processing module
Row display, interface module are connected with processing module, carry out data exchange.
CAN interface and RS485 interfaces are provided with the interface module, CAN interface to resistance measuring module by sending
Test instruction, after being detected by resistance measuring module, sends to host computer；The RS485 interfaces are in resistance measuring module
After obtaining measured data, after control process resume module, send to host computer.The system sends test by CAN
Order, after tested measurement equipment receives order and responds, self-test information is sent automatically by CAN, the system receives
To after these information, shown immediately on screen.System shows testing result using LCD, using the side of LCD liquid crystal displays
Formula shows which advantage is intuitive display, and the informative of display, shortcoming is to see not will be apparent that under strong light.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (5)
1. detect the monitor station of insulaion resistance, it is characterised in that be connected, control with control process module including resistance measuring module
Processing module is connected with interface module, and the insulation resistance data detected is sent to control process module by resistance measuring module
Row processing, the control information that the control process module receiving interface module is sent, and the result after processing is transmitted to interface
Module, detection electric bridge is provided with the resistance measuring module, insulaion resistance detection is carried out by detecting electric bridge.
2. the monitor station of detection insulaion resistance according to claim 1, it is characterised in that the resistance measuring module includes
AFE(analog front end) and analog-to-digital conversion module, the AFE(analog front end) receive the signal that control process module is sent and insulation resistance data are entered
Row collection, by the signal of collection after analog-to-digital conversion module is handled, the data after processing are sent to control process module.
3. the monitor station of detection insulaion resistance according to claim 2, it is characterised in that the AFE(analog front end) includes cable
Joint, relay array, constant-current source, detection electric bridge and programmable amplifier, the cable connector gather insulation resistance data, and will
In data transfer to relay array, relay array is adjusted by control process module, by the data of transmission send to
Detecting in electric bridge, constant-current source is connected with detection electric bridge, and detection electric bridge sends the data after processing into programmable amplifier, and by
Programmable amplifier is sent to analog-to-digital conversion module, and the programmable amplifier receives the tune that control process module is amplified multiple
It is whole.
4. the monitor station of detection insulaion resistance according to claim 1, it is characterised in that the control process module includes
Memory modules, flash memory module, processing module, display module, the memory modules are connected with processing module, flash memory module and processing
Module is connected, and the data after processing are sent to display module and shown by processing module, and interface module is connected with processing module,
Carry out data exchange.
5. the monitor station of detection insulaion resistance according to claim 1, it is characterised in that be provided with the interface module
CAN interface and RS485 interfaces, CAN interface are carried out by sending test instruction to resistance measuring module by resistance measuring module
After detection, send to host computer；The RS485 interfaces are after resistance measuring module obtains measured data, by control process mould
After block processing, send to host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710697223.1A CN107561365A (en) | 2017-08-15 | 2017-08-15 | Detect the monitor station of insulaion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710697223.1A CN107561365A (en) | 2017-08-15 | 2017-08-15 | Detect the monitor station of insulaion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107561365A true CN107561365A (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710697223.1A Pending CN107561365A (en) | 2017-08-15 | 2017-08-15 | Detect the monitor station of insulaion resistance |
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| CN (1) | CN107561365A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096839Y (en) * | 2007-10-18 | 2008-08-06 | 武汉铁工科技发展有限公司 | An AC electromotor insulation resistance detection device |
| CN103427875A (en) * | 2012-08-03 | 2013-12-04 | 万高(杭州)科技有限公司 | Analog front end system of coaxial cable broadband access |
| CN204832351U (en) * | 2015-08-24 | 2015-12-02 | 湖北三江航天万峰科技发展有限公司 | Small resistance and insulation resistance's integrated tester |
| CN204925251U (en) * | 2015-09-02 | 2015-12-30 | 武汉国电西高电气有限公司 | Marching type insulation resistance testing arrangement |
-
2017
- 2017-08-15 CN CN201710697223.1A patent/CN107561365A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096839Y (en) * | 2007-10-18 | 2008-08-06 | 武汉铁工科技发展有限公司 | An AC electromotor insulation resistance detection device |
| CN103427875A (en) * | 2012-08-03 | 2013-12-04 | 万高(杭州)科技有限公司 | Analog front end system of coaxial cable broadband access |
| CN204832351U (en) * | 2015-08-24 | 2015-12-02 | 湖北三江航天万峰科技发展有限公司 | Small resistance and insulation resistance's integrated tester |
| CN204925251U (en) * | 2015-09-02 | 2015-12-30 | 武汉国电西高电气有限公司 | Marching type insulation resistance testing arrangement |
Non-Patent Citations (1)
| Title |
|---|
| 幸玲等: "双路PV输入的光伏并网逆变器中绝缘电阻检测方案比较及实验结果分析", 《电子世界》 * |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180109 |
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| RJ01 | Rejection of invention patent application after publication |