CN208872847U - A kind of dry and wet node acquisition circuit module - Google Patents
A kind of dry and wet node acquisition circuit module Download PDFInfo
- Publication number
- CN208872847U CN208872847U CN201821453373.4U CN201821453373U CN208872847U CN 208872847 U CN208872847 U CN 208872847U CN 201821453373 U CN201821453373 U CN 201821453373U CN 208872847 U CN208872847 U CN 208872847U
- Authority
- CN
- China
- Prior art keywords
- circuit
- dry
- resistance
- power supply
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
A kind of dry and wet node acquisition circuit module involved by the utility model, including isolated power supply power supply circuit, part main control chip circuit, connector interface circuit and dry and wet node Acquisition Circuit；The output end with isolated power supply power supply circuit, the output end connection of connector interface circuit, part main control chip circuit are connect dry and wet node Acquisition Circuit with dry and wet node Acquisition Circuit respectively.When work, when connector interface circuit is connect with external sensor module, external signal is worked by dry and wet node Acquisition Circuit acquisition process.In this circuit arrangement, since zener diode D3 has the one-way conduction pressure stabilization function of 24V, the crosstalk voltage of external sensor module can be prevented excessive, to improve the accuracy of acquisition data, and versatile.Since diode D2 has one-way conduction effect, prevents the crosstalk voltage of external sensor module from flowing backward by acquisition conducting wire input to isolation VCC_DI power supply, so that the utility model be made to have precision high, facilitate the function of management.
Description
[technical field]
The utility model relates to a kind of simple and practical dry and wet node Acquisition Circuit moulds for industrial computer mainboard field
Block.
[background technique]
With social development in science and technology, industrial products control application it is more and more, especially to accuracy, stability, in real time
Property industrial products require also be increasingly stringenter.Such as: traditional small-sized sensing module, manually using this small-sized sensing module and
Collecting data information, due to the limitation of personal monitoring, not only low efficiency, in management while being easy to appear the technologies such as human error
Defect.
[utility model content]
In view of this, the technical problem to be solved by the utility model is to provide a kind of dry and wet sections using pure hardware circuit
Point acquisition circuit module, which not only has acquisition range wide, can centralized control, integrated signal isolation circuit resists dry
It disturbs that ability is strong, ensure that simple, low in cost, the versatile feature of the accuracy of acquisition data, circuit, but also there is essence
Degree is high, can real-time monitoring acquire data, facilitate the function of management.
Above-mentioned technical problem, the technical solution adopted in the utility model are solved thus are as follows: a kind of dry and wet node Acquisition Circuit
Module comprising isolated power supply power supply circuit, part main control chip circuit, connector interface circuit and the acquisition of dry and wet node
Circuit；The dry and wet node Acquisition Circuit output end with isolated power supply power supply circuit respectively, the output of connector interface circuit
End connection, the part main control chip circuit are connect with dry and wet node Acquisition Circuit.
It further limits, the part main control chip circuit includes main control chip U1, the electricity being connected on main control chip U1
It is in parallel to hold C7 and resistance R7, the capacitor C6, the capacitor C7 being connected on the one end resistance R7 and resistance R7.
It further limits, the isolated power supply power supply circuit includes power supply chip U2, is connected on power supply chip U2
Capacitor C1, capacitor C2, the capacitor C1, capacitor C2 be in parallel with power supply chip U2；The electricity being connected on power supply chip U2
Hold C3, capacitor C4, resistance R1, the capacitor C3, capacitor C4, resistance R1 is in parallel with power supply chip U2.
It further limiting, the dry and wet node Acquisition Circuit includes triode D1, the resistance R2 being connected on triode D1,
The resistance R3 being connected on triode D1, the metal-oxide-semiconductor Q1 being connected on triode D1, the resistance R4 being connected on metal-oxide-semiconductor Q1, even
It is connected to the diode D2 of the resistance R4 other end, in addition, the capacitor C5 being connected on metal-oxide-semiconductor Q1, resistance R6, zener diode D3,
Resistance R5；The capacitor C5, resistance R6, zener diode D3 are connected in parallel on respectively on metal-oxide-semiconductor Q1, and the resistance R5 is connected to electricity
It hinders between R6 and zener diode D3.
It further limits, the connector interface circuit includes interface end DIIN1, is connected on interface end DIIN1
Power end VCC_DI and signal end GND_DI.
The advantageous effects of the utility model: because the technical program using the dry and wet node Acquisition Circuit respectively with every
Output end from power-supplying circuit, the output end connection of connector interface circuit, the part main control chip circuit and dry and wet
The connection of node Acquisition Circuit, and constitute the acquisition circuit module.When work, when connector interface circuit and external sensor mould
When block connects, after the part main control chip circuit works on power, the external signal is acquired by dry and wet node Acquisition Circuit
Handle work.In this circuit arrangement, since zener diode D3 has the one-way conduction pressure stabilization function of 24V, external biography can be prevented
The crosstalk voltage of sensor module is excessive, the breakdown components such as metal-oxide-semiconductor Q1, to have acquisition range wide, can centralized control, integrate
The characteristics of signal isolation circuit, strong antijamming capability, ensure that the accuracy of acquisition data, circuit are simple, low in cost, general
Property is strong.Since diode D2 has one-way conduction effect, it is therefore prevented that the crosstalk voltage of external sensor module passes through acquisition conducting wire
Isolation VCC_DI power supply is arrived in input reverse irrigation, it is ensured that the circuit stability of industrial host, it is high with precision, and it can real-time monitoring acquisition number
According to facilitating the function of management.
With reference to the accompanying drawings and examples, the technical solution of the utility model is described in further detail.
[Detailed description of the invention]
Fig. 1 is the frame principle figure of dry and wet node acquisition circuit module in the utility model；
Fig. 2 is the circuit diagram of part main control chip circuit in the utility model；
Fig. 3 is the circuit diagram that power-supplying circuit is isolated in the utility model；
Fig. 4 is the circuit diagram of dry and wet node Acquisition Circuit in the utility model.
[specific embodiment]
In order to be clearer and more clear technical problem to be solved in the utility model, technical solution and beneficial effect, with
Under in conjunction with the accompanying drawings and embodiments, the utility model is described in further detail.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
Shown in please refer to figs. 1 to 4, illustrate a kind of dry and wet node acquisition circuit module below with reference to embodiment comprising
Isolated power supply power supply circuit, part main control chip circuit, connector interface circuit and dry and wet node Acquisition Circuit.It is described dry
The output end with isolated power supply power supply circuit, the output end connection of connector interface circuit are described respectively for wet node Acquisition Circuit
Part main control chip circuit is connect with dry and wet node Acquisition Circuit.
The part main control chip circuit includes main control chip U1, capacitor C7 and the resistance being connected on main control chip U1
R7, the capacitor C6, the capacitor C7 being connected on the one end resistance R7 and resistance R7 are in parallel.The isolated power supply power supply circuit includes
Power supply chip U2, the capacitor C1 being connected on power supply chip U2, capacitor C2, the capacitor C1, capacitor C2 divide and for battery cores
Piece U2 is in parallel；The capacitor C3 being connected on power supply chip U2, capacitor C4, resistance R1, the capacitor C3, capacitor C4, resistance
R1 is in parallel with power supply chip U2.The dry and wet node Acquisition Circuit includes triode D1, the resistance R2 being connected on triode D1,
The resistance R3 being connected on triode D1, the metal-oxide-semiconductor Q1 being connected on triode D1, the resistance R4 being connected on metal-oxide-semiconductor Q1, even
It is connected to the diode D2 of the resistance R4 other end, in addition, the capacitor C5 being connected on metal-oxide-semiconductor Q1, resistance R6, zener diode D3,
Resistance R5；The capacitor C5, resistance R6, zener diode D3 are connected in parallel on respectively on metal-oxide-semiconductor Q1, and the resistance R5 is connected to electricity
It hinders between R6 and zener diode D3.The connector interface circuit includes interface end DIIN1, is connected to interface end
Power end VCC_DI and signal end GND_DI on DIIN1.
Connector interface circuit is connected in external sensor module by conducting wire, when industrial computer mainboard works on power
Afterwards, external signal is begun through to be acquired by dry and wet node Acquisition Circuit by conducting wire and be perceived, and zener diode D3 has the list of 24V
To conducting pressure stabilization function, it is therefore prevented that the crosstalk voltage of external sensor module is excessive, causes punch through the components such as metal-oxide-semiconductor Q1, and two
Pole pipe D2 have one-way conduction effect, it is therefore prevented that the crosstalk voltage of external sensor module by acquisition conducting wire input flow backward arrive every
From VCC_DI power supply, industrial host is protected.Dry and wet node acquisition circuit module acquisition dry contact and wet contact in the present embodiment
Two kinds of signal working methods.
When outside acquisition signal is dry contact signal, it is abnormality that outside, which is low state, and external sensor module is
Normally open, it is high state that the end the DIIN1 acquisition in dry and wet node Acquisition Circuit at this time is external, the end VCC_DI by resistance R4 and
Resistance R6 arrives ground terminal.Grid voltage by metal-oxide-semiconductor Q1 known to Ohm's law is 2.5V, the at this time source electrode of metal-oxide-semiconductor Q1 and leakage
Pole conducting, and triode D1 is light-coupled isolation module, with being conducting to due to the source electrode and drain electrode of metal-oxide-semiconductor Q1, inside triode D1
Light emitting diode is started to work, and is off state inside triode D1, DI1 acquires signal level and pulled up by resistance R2 at this time
3.3V high level, the voltage of main control chip GPIO1 acquisition are 3.3V, are high level, equipment is normal.When abnormal conditions occur,
External sensor module be closed state, external level 0, VCC_DI by resistance R4 and resistance R5 be divided to ground, cross ohm
The grid voltage of metal-oxide-semiconductor Q1 is 0.69V known to law, and the source electrode and drain electrode of metal-oxide-semiconductor Q1 cannot be connected, at this time inside triode D1
Light emitting diode does not work, triode ON inside triode D1, and DI1 acquisition signal level is pulled down to low level, master control core
It is low level that piece GPIO1, which collects voltage, detects abnormal state, issues alarm.
When outside acquisition signal is wet contact signal, it is abnormality that outside, which is high state, and external sensor module is
Normally open, the external DIIN1 acquisition in dry and wet node Acquisition Circuit at this time is low state, external level 0, VCC_DI process
Resistance R4 and resistance R5 is divided to the end interface end DIIN1, and the grid voltage for crossing metal-oxide-semiconductor Q1 known to Ohm's law is 0.69V, MOS
The source electrode and drain electrode of pipe Q1 cannot be connected, and triode D1 interior light emitting diodes do not work at this time, triode inside triode D1
Conducting, DI1 acquisition signal level are pulled down to low level, and it is low level that main control chip GPIO1, which collects voltage, working properly.
When abnormal conditions occur, external sensor module is closed state, and external input high state level, VCC_DI is by resistance R4
With resistance R6 to ground, the grid voltage by metal-oxide-semiconductor Q1 known to Ohm's law is 2.5V, at this time the source electrode and drain electrode of metal-oxide-semiconductor Q1
Conducting, triode D1 interior light emitting diodes are started to work, and triode cut-off inside triode D1, DI1 acquires signal electricity at this time
Flat to pull up 3.3V high level by R2, it is 3.3V that main control chip GPIO1, which collects voltage, is high level, detects abnormal state,
Issue alarm.
In conclusion because the technical program using the dry and wet node Acquisition Circuit respectively with isolated power supply power supply circuit
Output end, the output end connection of connector interface circuit, the part main control chip circuit are connect with dry and wet node Acquisition Circuit,
And constitute the acquisition circuit module.When work, when connector interface circuit is connect with external sensor module, the part
After main control chip circuit works on power, the external signal is worked by dry and wet node Acquisition Circuit acquisition process.In this circuit
In, since zener diode D3 has the one-way conduction pressure stabilization function of 24V, the crosstalk voltage of external sensor module can be prevented
It is excessive, the breakdown components such as metal-oxide-semiconductor Q1, to have acquisition range wide, can centralized control, integrated signal isolation circuit resists dry
Disturb the strong feature of ability, it is ensured that acquire the accuracy of data, and circuit is simple, at low cost, versatile.Since diode D2 has
There is one-way conduction effect, prevents the crosstalk voltage of external sensor module from flowing backward by acquisition conducting wire input to isolation VCC_DI electricity
Source, it is ensured that the circuit stability of industrial host, and have precision high, can real-time monitoring acquire data, facilitate the function of management.
Above by reference to the preferred embodiment of Detailed description of the invention the utility model, not thereby limit to the right of the utility model
Range.Those skilled in the art do not depart from made any modification, equivalent replacement in the scope of the utility model and essence and change
Into should all be within the interest field of the utility model.
Claims (5)
1. a kind of dry and wet node acquisition circuit module comprising isolated power supply power supply circuit, part main control chip circuit, connector
Interface circuit and dry and wet node Acquisition Circuit；It is characterized by: the dry and wet node Acquisition Circuit is supplied with isolated power supply respectively
The output end of circuit, the output end connection of connector interface circuit, the part main control chip circuit and dry and wet node acquire
Circuit connection.
2. a kind of dry and wet node acquisition circuit module according to claim 1, it is characterised in that: the part main control chip electricity
Road includes main control chip U1, the capacitor C7 and resistance R7 being connected on main control chip U1, the capacitor being connected on the one end resistance R7
C6, the capacitor C7 and resistance R7 are in parallel.
3. a kind of dry and wet node acquisition circuit module according to claim 1, it is characterised in that: the isolated power supply power supply electricity
Road includes power supply chip U2, the capacitor C1 being connected on power supply chip U2, capacitor C2, the capacitor C1, capacitor C2 and confession
Electrical chip U2 is in parallel；The capacitor C3 being connected on power supply chip U2, capacitor C4, resistance R1, the capacitor C3, capacitor C4,
Resistance R1 is in parallel with power supply chip U2.
4. a kind of dry and wet node acquisition circuit module according to claim 1, it is characterised in that: the dry and wet node acquisition electricity
Road includes triode D1, the resistance R2 being connected on triode D1, and the resistance R3 being connected on triode D1 is connected to triode
Metal-oxide-semiconductor Q1 on D1, the resistance R4 being connected on metal-oxide-semiconductor Q1 are connected to the diode D2 of the resistance R4 other end, in addition, connection
In the capacitor C5 on metal-oxide-semiconductor Q1, resistance R6, zener diode D3, resistance R5；The capacitor C5, resistance R6, zener diode D3
It is connected in parallel on metal-oxide-semiconductor Q1 respectively, the resistance R5 is connected between resistance R6 and zener diode D3.
5. a kind of dry and wet node acquisition circuit module according to claim 1, it is characterised in that: the connector interface circuit
Including interface end DIIN1, the power end VCC_DI and signal end GND_DI that are connected on interface end DIIN1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821453373.4U CN208872847U (en) | 2018-09-06 | 2018-09-06 | A kind of dry and wet node acquisition circuit module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821453373.4U CN208872847U (en) | 2018-09-06 | 2018-09-06 | A kind of dry and wet node acquisition circuit module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208872847U true CN208872847U (en) | 2019-05-17 |
Family
ID=66466873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821453373.4U Active CN208872847U (en) | 2018-09-06 | 2018-09-06 | A kind of dry and wet node acquisition circuit module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208872847U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907735A (en) * | 2019-12-08 | 2020-03-24 | 国网河南省电力公司洛阳供电公司 | Modular primary equipment simulation system |
| CN112783042A (en) * | 2020-12-31 | 2021-05-11 | 瑞斯康达科技发展股份有限公司 | Signal acquisition circuit and acquisition method |
| WO2023045068A1 (en) * | 2021-09-27 | 2023-03-30 | 广州市保伦电子有限公司 | Dry and wet node acquisition circuit having protection and line monitoring functions |
-
2018
- 2018-09-06 CN CN201821453373.4U patent/CN208872847U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907735A (en) * | 2019-12-08 | 2020-03-24 | 国网河南省电力公司洛阳供电公司 | Modular primary equipment simulation system |
| CN112783042A (en) * | 2020-12-31 | 2021-05-11 | 瑞斯康达科技发展股份有限公司 | Signal acquisition circuit and acquisition method |
| WO2023045068A1 (en) * | 2021-09-27 | 2023-03-30 | 广州市保伦电子有限公司 | Dry and wet node acquisition circuit having protection and line monitoring functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208872847U (en) | A kind of dry and wet node acquisition circuit module | |
| CN104253459A (en) | USB device with power supply mode switching function | |
| CN205692368U (en) | A kind of wireless multi-environmental parameter recording transmitter | |
| CN204287446U (en) | A kind of power-fail detection circuit | |
| CN103792923A (en) | Method for detecting and controlling sets of power supplies of main board through digital chips | |
| CN104065125A (en) | Electronic product charging system | |
| CN205959015U (en) | Multichannel analog quantity collector and water pump intelligent gateway who makes with this collector | |
| CN107681638A (en) | Power supply protection equipment for ship electronic chart system | |
| CN202383491U (en) | Slave power supply and valve control circuit of M-BUS | |
| CN104777436A (en) | Novel alternating current power supply monitoring device | |
| CN105700599A (en) | Voltage regulation device for electronic equipment | |
| CN105471421B (en) | A kind of level shifting circuit | |
| CN205787055U (en) | A kind of electric voltage exception fluctuation monitoring and recording instrument | |
| CN105974176B (en) | A kind of USB Type-C volometer and its detection method | |
| CN205656575U (en) | Computer constant voltage power supply circuit | |
| CN104660249B (en) | Two-wire system fieldbus and its interface circuit | |
| CN102508508A (en) | Programmable power circuit of meter bus slave | |
| CN208460009U (en) | A kind of data acquisition parsing plate and data collector adapting to industrial flow meter | |
| CN203203765U (en) | Water leakage alarm device for underwater autonomous unmanned vehicle | |
| CN207114626U (en) | Double loop exchanges transmitter | |
| CN209214766U (en) | A kind of illumination sensing circuit | |
| CN201118442Y (en) | A low-voltage power circuit | |
| CN204633748U (en) | A kind of mixed-voltage electric power system 3.3V and 5V device two-way communication circuit | |
| CN104571091A (en) | Controller fault detection system of intelligent transmitter | |
| CN110429694A (en) | A kind of method and device preventing the concatenated dry cell reversal connection of 4 sections |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |