CN110333408A - A kind of multi-way switching values scanning-detecting system - Google Patents
A kind of multi-way switching values scanning-detecting system Download PDFInfo
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- CN110333408A CN110333408A CN201910617692.7A CN201910617692A CN110333408A CN 110333408 A CN110333408 A CN 110333408A CN 201910617692 A CN201910617692 A CN 201910617692A CN 110333408 A CN110333408 A CN 110333408A
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- 238000010619 multiway switching Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 238000004891 communication Methods 0.000 claims abstract description 36
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 14
- 238000007493 shaping process Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
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- General Engineering & Computer Science (AREA)
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- Programmable Controllers (AREA)
Abstract
A kind of multi-way switching values scanning-detecting system, including detection control unit, detection control unit and input filter, isolation, shaping circuit and output isolation, driving circuit connection, make to input, delivery outlet is worked with scanning mode, repeating query detects each way switch amount state, and testing result is handled, detection control unit is connected with switching value position display circuit simultaneously, the column locations of display switch amount movement, it is connect with RS232 serial communication circuit, realize the communication function with host computer, it is connect with 485 telecommunication circuit of two-way, the communication function with PLC and two detection system cascade operation is realized respectively.The present invention is comprehensive to realize multi-way switching values Scanning Detction, realizes the good results such as detection is flexible, reliable, number is more and small in size, at low cost, transmitting range is remote.
Description
Technical field
The present invention relates to detection, control technology field, in particular to a kind of multi-way switching values scanning-detecting systems.
Background technique
In modern industrial production and scientific research process, it is often necessary to detection switch amount signal intensity, then according to each
The information such as a on-off model variation relation judgement working condition, influence factor, abnormal factors.Such as in industry measurement and control system
In, it needs to detect the switching signal of the equipment such as electromagnetic relay, auxiliary switch generation, carries out judgement to make corresponding control
Strategy.Basic on-off model may be implemented in some data collecting cards or corresponding digital quantity expansion module currently on the market
Detection demand, but to up to tens the tunnels even real-time detection of the on-off model on roads up to a hundred, there are no special applications, and
As detection number increases cost and volume and all greatly improves, field connection also very complicated.On the other hand, switching value is grown
When Distance Transmission, it is easy to be caused transmission signal to be distorted or be distorted by extraneous electromagnetic interference；And switching value passes through length
Cable single-termination enters microprocessor, due to the line impedance and voltage drop of cable, limits the distance of the cable.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of multi-way switching values Scanning Detctions
System, comprehensive to realize multi-way switching values Scanning Detction, with detecting, flexible, reliable, number is more and small in size, at low cost, passes
It send apart from the good results such as remote.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of multi-way switching values scanning-detecting system, including detection control unit 3, detection control unit 3 and input filter,
Isolation, shaping circuit 1 and output isolation, driving circuit 2 connect, and input, delivery outlet is made to work with scanning mode, and repeating query detection is each
Way switch amount state, and testing result is handled, while detection control unit 3 is connected with switching value position display circuit 4,
The column locations of display switch amount movement, connect with RS232 serial communication circuit 5, realize the communication function with host computer,
It is connect with 485 telecommunication circuit 6 of two-way, realizes the communication function with PLC and two detection system cascade operation respectively.
The output isolation, driving circuit 2, are isolated and are amplified to the output signal of detection control unit.
The detection control unit 3 controls Scanning Detction mode, and shows testing result, while will test result with logical
The mode of news sends PLC to or host computer is monitored control.
The RS232 serial communication circuit 5, including RS232 level shifting circuit and serial line interface are swept for providing
The communication interface of detection system and host computer is retouched, realizes real time monitoring scanning system testing result.
The two-way RS485 telecommunication circuit, including RS485 level shifting circuit and serial line interface, provide respectively
The communication interface of the communication interface and two scanning-detecting system cascade operations of scanning-detecting system and PLC.
Beneficial effects of the present invention:
1, the present invention provides a kind of multi-way switching values scanning-detecting systems, comprehensive to realize multi-way switching values Scanning Detction,
Realize the good results such as detection is flexible, reliable, number is more and small in size, at low cost, transmitting range is remote.
2, the present invention provides a kind of multi-way switching values scanning-detecting system, pass through the input filter, isolation, shaping
Circuit and output isolation, driving circuit guarantee that the input of detecting and controlling system, output signal are complete, reliable.
3, the present invention provides a kind of multi-way switching values scanning-detecting systems, by the detection control unit with software
The mode of programming controls Scanning Detction mode, and shows testing result, while will test result and sending PLC in a communication manner
Or host computer is monitored control.It realizes rank scanning detection control using cleverly software programming, using less
Hardware interface detects the on-off model of more number.
4, the present invention provides a kind of multi-way switching values scanning-detecting system, by the two-way RS485 telecommunication circuit,
The communication interface of scanning-detecting system and PLC and the communication interface of two scanning-detecting system cascade operations are provided respectively.This
Using RS485 bus as on-off model input channel, the differential communication mode of one side RS485 bus can inhibit system
External interference signal improves transmission quality；On the other hand, it is transmitted due to on-off model using low frequency signal, it can be identical
Under the conditions of greatly improve its transmission range.Moreover, the cascade operation mode of two detection systems can make the switching value detected
Number is multiplied.
5, the present invention provides a kind of multi-way switching values scanning-detecting system, can 2 sets of systems work at the same time realization to 384 tunnels
The monitoring of switching value controls, and 3 sets of systems work at the same time the monitoring control etc. realized to 768 way switch amounts.
Detailed description of the invention
Fig. 1 is the circuit diagram of input filter of the present invention, isolation, shaping circuit.
Fig. 2 is the circuit diagram of the present invention for exporting isolation, driving circuit.
Fig. 3 is the circuit diagram of detection control unit of the present invention.
Fig. 4 is the circuit diagram of switching value position of the present invention display circuit.
Fig. 5 is the circuit diagram of RS232 serial communication circuit of the present invention.
Fig. 6 is the circuit diagram of two-way RS485 telecommunication circuit of the present invention.
Fig. 7 is wire frame diagram of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in fig. 7, the present invention provides a kind of multi-way switching values scanning-detecting system, including detection control unit 3, inspection
Survey control unit 3 and input filter, be isolated, shaping circuit and 1 output isolation, driving circuit 2 connect, make to input, delivery outlet with
Scanning mode work, repeating query detects each way switch amount state, and handles testing result, at the same detection control unit 3 with
Switching value position display circuit 4 is connected, and the column locations of display switch amount movement are connect with RS232 serial communication circuit 5, real
It now with the communication function of host computer, connect with 485 telecommunication circuit 6 of two-way, realizes and PLC and two detection system respectively
The communication function of cascade operation.
A kind of multi-way switching values scanning-detecting system can also two detection system cascade operations, realize to 192
The monitoring of way switch amount controls.Can also 2 sets of systems work at the same time and realize the monitorings of 384 way switch amounts is controlled, 3 sets of systems are simultaneously
Monitoring control to 768 way switch amounts etc. is realized in work.
Preferably, the input filter, isolation, shaping circuit 1 and output isolation, driving circuit 2 provide reliable defeated
Enter, output signal.
Preferably, the detection control unit 3, controls Scanning Detction mode in a manner of software programming, and shows inspection
It surveys as a result, will test result simultaneously sends PLC or host computer progress long-distance monitor and control in a communication manner.
Preferably, the RS232 serial communication circuit 5 includes RS232 level shifting circuit and serial line interface, is used
In providing the communication interface of scanning-detecting system and host computer, the real-time monitoring and control to detection system is realized.
Preferably, 485 telecommunication circuit of two-way includes RS485 level shifting circuit and serial line interface, difference
The communication interface of scanning-detecting system and PLC and the communication interface of two scanning-detecting system cascade operations are provided.
As shown in Figure 1, X1 is one of 8 tunnel input signals, R in the input filter, isolation, shaping circuit 123、
C23Constitute RC filter circuit.U13For optocoupler, Phototube Coupling is carried out to input signal, is connect for reducing interference and protection input
Mouthful.U2CFor Schmidt trigger, further shaping is carried out to input signal, improves the quality of input signal.The variable connector
Amount scanning-detecting system shares 8 tunnels detection input port, therefore has 8, same circuit.
On the basis of above situation, another embodiment, the output is isolated, in driving circuit 2, as shown in Fig. 2, U10
For optocoupler, Phototube Coupling is carried out to output signal, protects output interface.VT11For triode, output signal put into power
Greatly, output signal anti-interference ability is improved.The multi-way switching values scanning-detecting system shares 12 tunnels detection delivery outlet, therefore has same
12, the circuit of sample.
On the basis of above situation, another embodiment, the detection control unit 3 includes digital programmable device
STC12C5A60S2, electrification reset circuit, clock circuit, electric source filter circuit.As shown in figure 3, U9For digital programmable device
STC12C5A60S2 can complete detection scan control by way of software programming, and position is shown, serial communication, and RS485 is logical
The functions such as letter.S6、R22、C17Constitute key reset circuit and electrification reset, powered on moment C17Pass through R22Charging, RST are high electricity
It is flat, it is pulled low after charging complete, realizes power-on reset function, key S6It presses RST to be raised, realizes key reset function.Y2、
C18、C21Clock circuit is constituted, provides oscillation frequency for STC12C5A60S2 work, wherein Y2For no source crystal oscillator, C18、C21To rise
Shake capacitor.C19、C20Constitute electric source filter circuit.
On the basis of above situation, another embodiment, the position display circuit 4 includes that driving unit and display are single
Member.As shown in figure 4, VT2、VT4、VT5For charactron common end driving triode, increase display driving current.DS1Altogether for three
Positive charactron, the row number (1~12) where left side front two is used to show step switch amount in line-column matrix, third position is used from left to right
Line number (1~8) where display step switch amount in line-column matrix, the display number by observing three Digital sum pipes can determine
Position where step switch amount in line-column matrix.
On the basis of above situation, another embodiment, in the RS232 serial communication circuit 5, as shown in figure 5, U6
For MAX232 electrical level transferring chip, the main conversion realized Transistor-Transistor Logic level and arrive RS232 level, thus realize STC12C5A60S2 with
The communication function of computer.VL9、VL10To communicate indicator light, when data is received, RXD is low level, VL10Indicator light is bright；
When sending out data, TXD is low level, VL99Indicator light is bright.CN4 is 9 needle serial port connectors, can be by one with Serial Port Line and computer
Connection is realized to scanning-detecting system condition monitoring function.
On the basis of above situation, another embodiment, in the two-way RS485 telecommunication circuit 6, as shown in fig. 6, U5
For MAX485 electrical level transferring chip, the main conversion realized Transistor-Transistor Logic level and arrive RS485 level, thus realize STC12C5A60S2 with
The communication function of PLC and cascade detection working method.VL3、VL5To communicate indicator light, when data is received, RXD2 is low
Level, VL5Indicator light is bright；When sending out data, TXD2 is low level, VL3Indicator light is bright.CN3 is 9 needle serial port connectors, can be passed through
Piece 485 buses are connected to PLC or another cascade scanning detection system.The multi-way switching values scanning-detecting system is total
There is two-way RS485 communicating circuit, all the way for connecting with PLC, all the way for connecting and composing grade with another scanning-detecting system
Join working method, therefore has 2, same circuit.
The detection system shares 8 tunnel input ports, and 12 road delivery outlets work according to rank scanning mode, and detectable 96 tunnels are opened
Guan Liang, and show testing result, while can will test that result sends PLC in a communication manner or host computer is monitored
Control.Can also two detection system cascade operations, realize and the monitorings of 192 way switch amounts controlled.It can also 2 sets of systems while work
Realize that the monitoring to 384 way switch amounts controls, 3 sets of systems work at the same time the monitoring control etc. realized to 768 way switch amounts.And
And this detection system uses RS485 bus as on-off model input channel, the differential communication mode of one side RS485 bus
It can inhibit external interference signal, improve transmission quality；On the other hand, it is transmitted due to on-off model using low frequency signal, it can
To greatly improve its transmission range under the same conditions.It is taken in Phototube Coupling equipment and software by increasing at input equipment end
The measures such as corresponding stabilization can guarantee to communicate accuracy completely.
Claims (5)
1. a kind of multi-way switching values scanning-detecting system, which is characterized in that including detection control unit (3), detection control unit
(3) with input filter, be isolated, shaping circuit (1) and output isolation, driving circuit (2) connect, make that input, delivery outlet to be to scan
Mode works, and repeating query detects each way switch amount state, and handles testing result, at the same detection control unit (3) with open
Pass measures position display circuit (4) and is connected, and the column locations of display switch amount movement are connect with RS232 serial communication circuit (5),
Realize and the communication function of host computer, result can be will test and be transferred to computer, realize long-range monitoring, also with two-way 485
The communication function with PLC and two detection system cascade operation is realized in telecommunication circuit (6) connection respectively.
2. a kind of multi-way switching values scanning-detecting system according to claim 1, which is characterized in that the output every
From, driving circuit (2), the output signal of detection control unit is isolated and is amplified.
3. a kind of multi-way switching values scanning-detecting system according to claim 1, which is characterized in that the detection control
Unit (3) controls Scanning Detction mode, and shows testing result, at the same will test result send in a communication manner PLC or
Host computer is monitored control.
4. a kind of multi-way switching values scanning-detecting system according to claim 1, which is characterized in that the RS232 serial ports
Telecommunication circuit (5), including RS232 level shifting circuit and serial line interface, by provide scanning-detecting system and it is upper based on
The communication interface of calculation machine realizes real time monitoring scanning system testing result.
5. a kind of multi-way switching values scanning-detecting system according to claim 1, which is characterized in that the two-way
RS485 telecommunication circuit, including RS485 level shifting circuit and serial line interface provide scanning-detecting system and PLC respectively
The communication interface of communication interface and two scanning-detecting system cascade operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617692.7A CN110333408A (en) | 2019-07-10 | 2019-07-10 | A kind of multi-way switching values scanning-detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617692.7A CN110333408A (en) | 2019-07-10 | 2019-07-10 | A kind of multi-way switching values scanning-detecting system |
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| CN110333408A true CN110333408A (en) | 2019-10-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203551704U (en) * | 2013-11-08 | 2014-04-16 | 乐清市人和电气科技有限公司 | Single-phase multifunctional meter |
| CN105974855A (en) * | 2016-07-22 | 2016-09-28 | 安徽亚辉电气自动化有限公司 | Monitoring and control system of switch state comprehensive indicating device |
| CN107797010A (en) * | 2017-11-30 | 2018-03-13 | 兰州交通大学 | A kind of automatic bow-lowering STS system test set |
| CN109116238A (en) * | 2018-06-05 | 2019-01-01 | 安徽锐能科技有限公司 | Automatic addressing method for battery management system |
| CN210626575U (en) * | 2019-07-10 | 2020-05-26 | 陕西高科电力电子有限责任公司 | Multi-way switching value scanning detection system |
-
2019
- 2019-07-10 CN CN201910617692.7A patent/CN110333408A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203551704U (en) * | 2013-11-08 | 2014-04-16 | 乐清市人和电气科技有限公司 | Single-phase multifunctional meter |
| CN105974855A (en) * | 2016-07-22 | 2016-09-28 | 安徽亚辉电气自动化有限公司 | Monitoring and control system of switch state comprehensive indicating device |
| CN107797010A (en) * | 2017-11-30 | 2018-03-13 | 兰州交通大学 | A kind of automatic bow-lowering STS system test set |
| CN109116238A (en) * | 2018-06-05 | 2019-01-01 | 安徽锐能科技有限公司 | Automatic addressing method for battery management system |
| CN210626575U (en) * | 2019-07-10 | 2020-05-26 | 陕西高科电力电子有限责任公司 | Multi-way switching value scanning detection system |
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