CN209590636U - A kind of electrical soft fault diagnosis device of analog quantity - Google Patents
A kind of electrical soft fault diagnosis device of analog quantity Download PDFInfo
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- CN209590636U CN209590636U CN201920501125.0U CN201920501125U CN209590636U CN 209590636 U CN209590636 U CN 209590636U CN 201920501125 U CN201920501125 U CN 201920501125U CN 209590636 U CN209590636 U CN 209590636U
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- analog
- current sensor
- analog input
- terminal
- touch screen
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Abstract
The utility model discloses a kind of electrical soft fault diagnosis devices of analog quantity, including DC24V power module, PLC, touch screen, Analog input mModule, analog signal detection circuit, the DC24V power module connects touch screen power end, the communication serial ports of PLC connects with touch screen communication serial ports, another communication serial ports of the PLC connects with Analog input mModule communication serial ports, the Analog input mModule power end connects DC24V power module outlet, Analog input mModule input terminal connects analog signal detection circuit, the present apparatus provides a kind of electrical soft fault diagnosis device of analog quantity, the quick capture and identification to aperiodicity short trouble can be achieved, the present apparatus is flexible in application simple, it is practical.
Description
Technical field
The utility model relates to electric fault detection technique fields, and in particular to a kind of electrical soft fault diagnosis dress of analog quantity
It sets.
Background technique
With the fast development of modern science and technology, industrial control system gradually moves towards automation, intelligent, enlargement；
New technology, new equipment, continues to bring out new process, it is desirable that and worker at the production line is continuously updated scientific knowledge and improves technical level, with
Adapt to the needs of socio-economic development.
PLC centralized control is widely applied in actual production, and electrical control scene is essentially by host computer complete monitoring, In
Apparently live all fault-signals can monitor in real time people, existing as long as scene has any failure host computer that can show
As long as maintenance electrician goes replacement component to debug according to fault message, at all without more high technology contents；Its
It is real not so although most of fault message is able to achieve complete monitoring, to be substantially a little comprehensive fault messages, it can only be to one
Line maintenance electrician one reference in handling failure, field control cabinet give host computer to transmit a comprehensive fault message
When, many electrical components auxiliary contact poor contacts in cabinet, terminal row wiring loosen, field control cable aging broken skin or long-term
Vibration friction etc., is likely to be such failure " arch-criminal ", and fault message always exists not bad processing, can be former according to control
Reason gradually search by reasoning, the most troublesome to be exactly: shutting down suddenly in equipment operation and host computer shows that " so-and-so " unit trip is believed
Breath, it is again automatic after shutdown to restore normal, restart rear normal operation irregularly and above-mentioned phenomenon occurs；When there are also being exactly equipment operation
Occurs protection control route miniature circuit breaker tripping suddenly, in-site measurement is again without breaking phenomena, and trial line charging closes a floodgate normally again, equipment
It reruns and irregularly phenomenon of the failure repeats, here it is the electrical soft faults of maintenance electrician's headache the most；Ground production system
Each test run start and stop completely at least need 40-50 minutes when there is such failure, and failure may be come if it cannot thoroughly exclude
It returns test run to result in one or several classes several times and cannot normally produce, both brings very big fiber crops to normal organization of production in this way
It is tired, but because test run back and forth to large scale equipment caused by impact injury.
For the aperiodicity of industrial control system (cuts in and out) electric signal failure, so far without effective side
Method is monitored, locks, and is still the difficult point in electric control system troubleshooting；Electrically believe for excluding aperiodicity at present
Number failure also relies primarily on empirical method, can not achieve everybody and promotes, it is low to exist simultaneously overhaul efficiency；Investigation method is main one by one
Disadvantage is exactly that maintenance workload is big, and overhaul efficiency is low, has not only delayed production but also has increased to equipment and has damaged；It can not achieve quick diagnosis
The purpose of failure.
According to electric signal transmission form, electric signal failure can be divided into digital quantity signal failure and analog signals event
Hinder two major classes；For analog signals failure, (it is all the letter of consecutive variations that analog signals are in time sum number to the application
Number, refer to the signals such as voltage, electric current, the frequency that various kinds of sensors is sent)；The applicant is concentrated on studies for many years, in conjunction with ten
Several years practical work experiences are devised for the efficient apparatus for searching such electrical soft fault, it can be achieved that aperiodicity short circuit
The quick capture and identification of failure.
Summary of the invention
The purpose of this utility model is to provide a kind of electrical soft fault diagnosis devices of analog quantity, it can be achieved that aperiodicity
The quick capture of open circuit fault and identification, the present apparatus are flexible in application simple, practical.
The technical solution adopted in the utility model is as follows: a kind of electrical soft fault diagnosis device of analog quantity, including DC24V
Power module, PLC, touch screen, Analog input mModule, analog signal detection circuit, it is characterised in that: the DC24V power supply
Module input is separately connected N line and L line, V- and the DC24V power supply of the touch screen power end on live AC220V alternating current
The power end V+ of the 24V- connection of module output end, touch screen is connect with DC24V power module outlet 24V+, and the touch screen is logical
News serial ports is connected by communication cable with the communication serial ports of PLC；Another communication serial ports and Analog input mModule of the PLC is logical
News serial ports connects, and the Analog input mModule L+ terminal connects DC24V power module outlet 24V+, analog quantity input module M
Terminal connects DC24V power module outlet 24V-, Analog input mModule PE terminal ground, Analog input mModule input terminal
Connect analog signal detection circuit；
The analog signal detection circuit is equipped with current sensor S1-S4, the Analog input mModule RA terminal and A+
Terminal accesses the end L+ of current sensor S1, the end M of Analog input mModule a- connection current sensor S1, the mould after being shorted
Analog quantity input module RB terminal and B+ terminal access the end L+ of current sensor S2, Analog input mModule b- connection electricity after being shorted
The end M of flow sensor S2, the Analog input mModule RC terminal and C+ terminal access the end L+ of current sensor S3 after being shorted,
After the end M of Analog input mModule c- connection current sensor S3, the Analog input mModule RD terminal and D+ terminal are shorted
Access the end L+ of current sensor S4, the end M of Analog input mModule d- connection current sensor S4, current sensor S1-S4
The end M be connected in series together, access DC24V power module outlet 24V-, current sensor is caught in extraneous circuit under test, this dress
Circuit under test can be monitored by setting, and PLC receives signal and by operation, pass to touch screen man-machine dialog interface one
Intuitive current values；
The touch screen is used to search detected information, carries out precise positioning to the fault point of appearance and carries out maintenance
Work.
Further, the DC24V power module selects the western SA5024 of moral power, the PLC to select siemens PLC PLC,
The touch screen selects the Kunlun on-state touch screen, and Analog input mModule selects 4 road analog input of Siemens EM231-AI4
Module, the current sensor select the contactless pincerlike current sensor of iridium Thailand ETCR007AD alternating current-direct current.
The application method of the present apparatus, includes the following steps:
(1) by the DC24V power module of the live 220V AC power source access electrical soft fault diagnosis device of analog quantity, it is
Present apparatus power supply；
(2) current sensor S1-S4 card to suspection is had in the possible circuit under test of short circuit respectively；
(3) present apparatus, the electric current of real-time measurement circuit under test are opened；
(4) when occurring irregular short-circuit soft fault in circuit under test, electric current will appear instantaneous abrupt change, current-jump letter
Breath can pass to Analog input mModule by current sensor, after Analog input mModule receives signal, can be converted into
One digital quantity signal, then be input in PLC register, PLC passes to touch screen man-machine dialog interface one directly by operation
The current values of sight；
(5) maintenance personal searches the jump or change information that circuit under test occurred by touch screen, calls history curve
Judge which road is broken down, precise positioning is carried out to the fault point of appearance, and replacement dimension is carried out to component in circuit under test
It repairs.
The utility model has the beneficial effects that: the utility model provide a kind of electrical soft fault diagnosis device of analog quantity and
When field application, other that current sensor S1-S4 card to suspection is had in the possible circuit under test of short circuit, the present apparatus can be to be measured
Circuit is monitored, and current information can pass to Analog input mModule by current sensor, and Analog input mModule receives
After signal, it can be converted into a digital quantity signal, then be input in PLC register, PLC passes to touch screen by operation
One intuitive current values of man-machine dialog interface carry out real-time monitoring record, can rapidly and accurately solve system electrical equipment
All kinds of irregular short-circuit soft faults occurred exclude difficult problem, especially in the system being made of multiple equipment, Neng Gou
Accurate at the first time to obtain online monitoring data, the device design scheme is reasonable, and circuit is simple, oneself power consumption is small, high reliablity,
It is shown with previous experiences method compared with checking method one by one suitable for the on-line monitoring of all kinds of faulty equipments and the locking of fault point
Great advantages and advantage out greatly shorten service work time and maintenance workload, while the device is complicated hidden to excluding
The failure hidden has its unrivaled advantage, and range detects step by step from big to small, and detection failure is convenient and efficient, and can accomplish
It is unattended, after connection, as long as opening the present apparatus when equipment operates normally leaves scene, until failure appearance can
To accurate locking fault point, important guarantee is played for production system stable and continuous.
Detailed description of the invention
Fig. 1 is the member connection structure schematic diagram of the electrical soft fault diagnosis device of analog quantity.
Fig. 2 is the circuit connection diagram of the electrical soft fault diagnosis device of analog quantity.
Fig. 3 is Analog input mModule partial enlarged view.
Fig. 4 is the circuit connection diagram of the analog signal detection circuit of the utility model embodiment.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with attached drawing pair
The utility model is further detailed, as described below, is merely intended for describing the technical solutions of the present application, but not for limiting the present application.
A kind of electrical soft fault diagnosis device of analog quantity, as shown in Figure 1, include DC24V power module, PLC, touch screen,
Analog input mModule, analog signal detection circuit, as shown in Fig. 2, the DC24V power module input terminal is separately connected scene
N line and L line, V- and DC24V the power module outlet 24V- of the touch screen power end are connect on AC220V alternating current, are touched
The power end V+ of screen is connect with DC24V power module outlet 24V+, and the touch screen communication serial ports passes through communication cable and PLC
Communication serial ports connect；Another communication serial ports of the PLC connects with Analog input mModule communication serial ports, and PLC is by PLC ontology
Power supply is directly powered, and the Analog input mModule L+ terminal connects DC24V power module outlet 24V+, analog quantity input module
M terminal connects DC24V power module outlet 24V-, Analog input mModule PE terminal ground, Analog input mModule input
End connection analog signal detection circuit；
As shown in figure 3, the analog signal detection circuit is equipped with current sensor S1-S4, the Analog input mModule
RA terminal and A+ terminal access the end L+ of current sensor S1 after being shorted, Analog input mModule a- connection current sensor S1's
The end M, the Analog input mModule RB terminal and B+ terminal access the end L+ of current sensor S2, analog input mould after being shorted
The end M of block b- connection current sensor S2, the Analog input mModule RC terminal and C+ terminal access current sense after being shorted
The end L+ of device S3, the end M of Analog input mModule c- connection current sensor S3, the Analog input mModule RD terminal and D+
Terminal accesses the end L+ of current sensor S4, the end M of Analog input mModule d- connection current sensor S4 after being shorted, electric current passes
The end M of sensor S1-S4 is connected in series together, and accesses DC24V power module outlet 24V-, current sensor is caught in electricity to be measured
Road, the present apparatus can be monitored circuit under test, and the signal that circuit under test can be will test by current sensor passes to
Analog input mModule after Analog input mModule receives signal, can be converted into a digital quantity signal, then be input to
In PLC register, PLC passes to one intuitive current values of touch screen man-machine dialog interface by operation, and electricity occurs in observation
Whether stream generates jump, that is, can determine whether that surveyed branch is that short-circuit soft fault all occur；
The touch screen is used to search detected information, carries out precise positioning to the fault point of appearance and carries out maintenance
Work.
Further, the DC24V power module selects the western SA5024 of moral power, the PLC to select siemens PLC PLC,
The touch screen selects the Kunlun on-state touch screen, and Analog input mModule selects 4 road analog input of Siemens EM231-AI4
Module, the current sensor select the contactless pincerlike current sensor of iridium Thailand ETCR007AD alternating current-direct current.
The application method of the present apparatus, characterized by the following steps:
(1) by the DC24V power module of the live 220V AC power source access electrical soft fault diagnosis device of analog quantity, it is
Present apparatus power supply；
(2) current sensor S1-S4 card to suspection is had in the possible circuit under test of short circuit respectively；
(3) present apparatus, the electric current of real-time measurement circuit under test are opened；
(4) when occurring irregular short-circuit soft fault in circuit under test, electric current will appear instantaneous abrupt change, current-jump letter
Breath can pass to Analog input mModule by current sensor, after Analog input mModule receives signal, can be converted into
One digital quantity signal, then be input in PLC register, PLC passes to touch screen man-machine dialog interface one directly by operation
The current values of sight；
(5) maintenance personal searches the jump or change information that circuit under test occurred by touch screen, calls history curve
Judge which road is broken down, precise positioning is carried out to the fault point of appearance, and replacement dimension is carried out to component in circuit under test
It repairs.
Embodiment 1
As shown in figure 4,4 slowdown monitoring circuits to be checked of existing 220V power supply, carry out electrical soft fault inspection to it using the present apparatus
It surveys, the specific steps are as follows:
(1) by the DC24V power module of the live 220V AC power source access electrical soft fault diagnosis device of analog quantity, it is
Present apparatus power supply；
(2) as shown in figure 4, other have current sensor S1-S4 card to suspection in the possible circuit under test 1-4 of short circuit；
(3) present apparatus is opened, the signal that circuit under test can be will test by current sensor passes to analog input
Module after Analog input mModule receives signal, can be converted into a digital quantity signal, then be input in PLC register,
PLC passes to one intuitive current values of touch screen man-machine dialog interface by operation；
(4) when occurring irregular short-circuit soft fault in circuit under test 1, electric current will appear instantaneous abrupt change in circuit 1, electricity
Stream jump information can be converted to a kind of signal by current sensor S1, pass to Analog input mModule, analog input mould
After block receives signal, it can be converted into a digital quantity signal, then be input in PLC register, PLC is by operation to touch
The current values of man-machine dialog interface one jump of screen；
(5) there is overcurrent jump information by the detected circuit under test 1 of touch screen lookup in maintenance personal, to out
Existing fault point carries out precise positioning, and carries out repair and replacement to component in circuit under test 1.
Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art
It says, still technical solution documented by foregoing embodiments can be carried out and be modified, or to part of technical characteristic
It is equivalently replaced, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of electrical soft fault diagnosis device of analog quantity, including DC24V power module, PLC, touch screen, analog input mould
Block, analog signal detection circuit, it is characterised in that: the DC24V power module input terminal is separately connected live AC220V exchange
N line and L line, V- and DC24V the power module outlet 24V- of the touch screen power end are connect on electricity, the power end of touch screen
V+ is connect with DC24V power module outlet 24V+, and the touch screen communication serial ports passes through the communication serial ports of communication cable and PLC
Connect；Another communication serial ports of the PLC connects with Analog input mModule communication serial ports, the end the Analog input mModule L+
Son connection DC24V power module outlet 24V+, analog quantity input module M terminal connect DC24V power module outlet 24V-, mould
Analog quantity input module PE terminal ground, Analog input mModule input terminal connect analog signal detection circuit；
The analog signal detection circuit is equipped with current sensor S1-S4, the Analog input mModule RA terminal and A+ terminal
The end L+ of current sensor S1, the end M of Analog input mModule a- connection current sensor S1, the analog quantity are accessed after short circuit
Input module RB terminal and B+ terminal access the end L+ of current sensor S2 after being shorted, Analog input mModule b- connection electric current passes
The end M of sensor S2, the Analog input mModule RC terminal and C+ terminal access the end L+ of current sensor S3, simulation after being shorted
The end M of input module c- connection current sensor S3 is measured, the Analog input mModule RD terminal accesses after being shorted with D+ terminal
The end L+ of current sensor S4, the end M of Analog input mModule d- connection current sensor S4, the end M of current sensor S1-S4
It is connected in series together, accesses DC24V power module outlet 24V-, current sensor is caught in extraneous circuit under test, and the present apparatus is
Real-time monitoring can be carried out to circuit under test, PLC receives signal and by operation, passes to touch screen man-machine dialog interface one
Intuitive current values；
The touch screen is used to search detected information, carries out precise positioning to the fault point of appearance and carries out maintenance mans
Make.
2. the electrical soft fault diagnosis device of analog quantity according to claim 1, it is characterised in that: the DC24V power supply mould
Block selects the western SA5024 of moral power, the PLC to select siemens PLC PLC, and the touch screen selects the Kunlun on-state touch screen,
Analog input mModule selects 4 road Analog input mModule of Siemens EM231-AI4, and the current sensor selects iridium safe
The contactless pincerlike current sensor of ETCR007AD alternating current-direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920501125.0U CN209590636U (en) | 2019-04-15 | 2019-04-15 | A kind of electrical soft fault diagnosis device of analog quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920501125.0U CN209590636U (en) | 2019-04-15 | 2019-04-15 | A kind of electrical soft fault diagnosis device of analog quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209590636U true CN209590636U (en) | 2019-11-05 |
Family
ID=68346302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920501125.0U Expired - Fee Related CN209590636U (en) | 2019-04-15 | 2019-04-15 | A kind of electrical soft fault diagnosis device of analog quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209590636U (en) |
-
2019
- 2019-04-15 CN CN201920501125.0U patent/CN209590636U/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: 20191105 Termination date: 20200415 |
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| CF01 | Termination of patent right due to non-payment of annual fee |