CN106020035A - Four-way analog input device based on CIB-BUS bus - Google Patents
Four-way analog input device based on CIB-BUS bus Download PDFInfo
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- CN106020035A CN106020035A CN201610478431.8A CN201610478431A CN106020035A CN 106020035 A CN106020035 A CN 106020035A CN 201610478431 A CN201610478431 A CN 201610478431A CN 106020035 A CN106020035 A CN 106020035A
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- Prior art keywords
- resistance
- bus
- input
- operational amplifier
- analog input
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21001—Analog input
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
The invention discloses a four-way analog input device based on a CIB-BUS bus. The input device comprises a control bus, a DC power source, a bus coupler, a main chip, a ten-bit D/A conversion circuit and a four-way analog input conversion circuit, wherein the control bus is connected with the bus coupler, the bus coupler is connected with the main chip, the DC power source is separately connected with the control bus, the bus coupler and the main chip, the main chip is further connected with the ten-bit D/A conversion circuit, and the ten-bit D/A conversion circuit is connected with the four-way analog input conversion circuit. The input device is advantaged in that the control bus is employed, four-way independent analog input detection can be realized, 0-5/10V and 4-20mA standard input signals can be received, ten-bit A/D conversion precision is realized, association control on AI values can be set, any output equipment associated with the input device can be controlled, software calibration of detection values can be realized, and an automatic report threshold value can be set.
Description
Technical field
The present invention relates to technical field of electrical automation control, be specifically related to a kind of based on CIB-BUS
Four road analog input devices of bus mastering mode.
Background technology
CIB-BUS bus is a kind of field bus technique, for by the central air-conditioning in building, electricity
The equipment such as air cock, lighting, energy conservation, video monitoring, security protection, environmental monitoring
Integrate, by unified network bus structure and control platform, it is achieved to these equipment
Centralized Monitoring and management.
In prior art, cannot to realize 4 tunnel separate analogue amounts defeated for analog input device based on bus
Enter detection, it is impossible to AI value is arranged association control, it is impossible to the outut device associated by control.
Such as, Chinese patent literature CN201156201Y discloses a kind of mould based on CAN
Analog quantity input equipment, including housing 1, circuit board 2 and electric connector 3, connects external bus and company
The electric connector 3 connecing spot sensor is separately mounted to the two ends of housing 1, and respectively with circuit board 2
Two ends are connected, and the electric connector wherein connecting external bus uses redundant fashion, can connect two
The outside CAN of bar.When module is operated in open space and unshielded measure, housing 1 uses
Rubber seal (between case lid and housing body), electric connector 3 uses watertight connector.Institute
The circuit board stated is arranged on the base plate of enclosure interior, and its circuit includes DC source, redundant bus
Interface circuit, CAN interface circuit, single-chip microcomputer (including software), filtering isolation circuit, sampling with
Testing circuit (BIT) in A/D change-over circuit, address setting circuit and machine, wherein, DC source will
The supply voltage of input is converted into the running voltage of internal circuit, it is provided that to other internal circuit;Superfluous
Remaining bus interface circuit provides the CAN interface of internal single channel and the CAN of outside two-way redundancy
Between connection;CAN interface circuit is from redundant bus interface information, the information received
Give single-chip microcomputer;Sensor signal is filtered, isolates and level translation by filtering isolation circuit,
Give sampling and A/D change-over circuit;Sampling and A/D change-over circuit are converted into digital quantity analog quantity
After give single-chip microcomputer;Address setting circuit is directly connected with single-chip microcomputer with BIT circuit.
Summary of the invention
It is an object of the invention to provide a kind of four road analog input dresses based on CIB-BUS bus
Put, it is achieved the curtage signal in docking entry loop detects, by 10 in module
A/D ALT-CH alternate channel, is converted into the digital quantity of corresponding ratio, input signal may select 5V, 10V or
4-20mA Three models, and sent to controlling in bus by bus coupler.
For achieving the above object, four tunnel analog quantitys based on CIB-BUS bus of the present invention are defeated
Enter device and include that control bus, DC source, bus coupler, main control chip, 10 D/A turn
Changing circuit and four road analog input change-over circuits, described control bus is with bus coupler even
Connecing, bus coupler is connected with main control chip, and DC source couples with control bus, bus respectively
Device and main control chip connect, and main control chip is also connected with 10 D/A change-over circuits, and 10 D/A turn
Change circuit and four road analog input change-over circuits connect.
Described DC source is for changing the unidirectional current controlling bus offer through power conversion chip
Use for+5V power supply supply bus coupler and main control chip.
Described bus coupler is used for being responsible for and controls bus communication, receives from controlling bus
Communication signal is also transferred to main control chip, and is sent to the response signal of main control chip control bus
On.
Described main control chip is used for receiving the communication command from controlling bus, and according to command context
Four road analog input change-over circuits are controlled.
Described 10 D/A change-over circuits are used for being responsible for converting analog signals into digital signal.
Described four road analog input change-over circuits for independent control input four road analog quantity voltages or
Current signal, it is selective that signal arranges total 5V, 10V and 4-20mA Three models.
Described main control chip is connected with communication signal converter, communication signal converter and bus level
Transducer collectively constitutes bus coupler, the PTD2 foot of main control chip and the second resistance and display lamp
Series connection, the second resistance and display lamp constitute operation indicating member, and the PTD3 foot of main control chip passes through
Feeler switch ground connection.
First input pin of the input terminal of described four road analog input change-over circuits and the 15th electricity
Resistance connects, and the other end of the 15th resistance is connected to the input in the same direction of the first operational amplifier;Letter
Number input is connected between the 15th resistance and the first input pin of input terminal;Input terminal
First input pin is used for inputting 4-20mA current signal;Second input pin of input terminal and the tenth
Seven resistance connect, the other end ground connection of the 17th resistance;Second input pin of input terminal is for defeated
Enter 0-5V voltage signal;3rd input pin ground connection of input terminal;4th input pin of input terminal
It is connected with the 13rd resistance;4th input pin of input terminal is used for inputting 0-10V DC voltage letter
Number;The other end of the 13rd resistance is connected to the input in the same direction and the 12nd of the second operational amplifier
Between resistance;The other end of the 12nd resistance connects the outfan of the first operational amplifier;18th
Electric capacity be connected to the outfan of the first operational amplifier and the first operational amplifier reverse input end it
Between;14th resistance is connected to the outfan of the first operational amplifier and the anti-of the first operational amplifier
Between input;One end of 19th electric capacity is connected to the 15th resistance and the first operational amplifier
Input in the same direction between;The other end ground connection of the 19th electric capacity;+ 18V power supply is the second computing
Amplifier provides voltage, and the 11st resistance one end connects the reverse input end of the second operational amplifier,
The other end of the 11st resistance is connected between signal output part and the tenth resistance;Tenth resistance another
One end connects the outfan of the second operational amplifier;17th electric capacity one end be connected to the tenth resistance with
Between the outfan of the second operational amplifier, the other end of the 17th electric capacity is connected to the 11st resistance
And between the reverse input end of the second operational amplifier;Signal output part is also connected with test port;
First operational amplifier, the second operational amplifier, the tenth resistance, the 11st resistance, the 12nd electricity
Resistance, the 13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th electricity
Appearance, the 18th electric capacity and the 19th electric capacity constitute voltage conversion circuit, are changed by analog input signal
Become 0-5V d. c. voltage signal, input main control chip, it is achieved four road analog input detections.
Present invention have the advantage that four tunnel simulations based on CIB-BUS bus of the present invention
Amount input equipment compared with prior art, uses the mode controlling bus, it is possible to realize 4 roads independent
The input detection of analog quantity, can connect 0~5V/10V, 4~20mA standard input signal, 10 A/D
Conversion accuracy, and AI value can be arranged association control, controlled by input equipment of the present invention
Make its associated any outut device, detected value can be carried out software calibration and arranging and automatically report
Threshold value.
Accompanying drawing explanation
Fig. 1 is the knot of four road analog input devices based on CIB-BUS bus of the present invention
Structure block diagram.
Fig. 2 is the circuit theory schematic diagram of main control chip of the present invention (MCU).
Fig. 3 is the principle schematic of four tunnel road analog input change-over circuits of the present invention.
Detailed description of the invention
Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
As it is shown in figure 1, four road analog input dresses based on CIB-BUS bus of the present invention
Put and include controlling bus 1, DC source 2, bus coupler 3, main control chip (MCU) 4,10
Position D/A change-over circuit 5 and four road analog input change-over circuits 6, described control bus 1 and bus
Bonder 3 connects, and bus coupler 3 is connected with main control chip 4, and DC source 2 is total with control respectively
Line 1, bus coupler 3 and main control chip 4 connect, main control chip 4 also with 10 D/A change-over circuits 5
Connecting, 10 D/A change-over circuits 5 are connected with four road analog input change-over circuits 6.
Described control bus is a kind of bus intelligent control system, and this control bus can connect many
Planting between functional module, and module is linkage, can become again the intelligent body of an independent operating.
Described DC source 2 is for turning the unidirectional current that control bus 1 provides through power conversion chip
It is changed to+5V power supply supply bus coupler 3 and main control chip 4 uses.
Described bus coupler is used for and controls bus communication, receives from the communication controlling bus
Signal is also transferred to main control chip, and is sent to the response signal of main control chip control in bus.
Described main control chip is used for receiving the communication command from controlling bus, and according to command context
Four road analog input change-over circuits are controlled.
Described 10 D/A change-over circuits 5 are used for being responsible for converting analog signals into digital signal.
Described four road analog input change-over circuits 6 control input four road analog quantity voltages for independent
Or current signal, it is selective that signal arranges total 5V, 10V and 4-20mA Three models.5V mould
Formula is used for exporting 0-5V d. c. voltage signal;10V pattern is used for exporting 0-10V d. c. voltage signal;
4-20mA pattern is used for exporting 4-20mA DC current signal.
As in figure 2 it is shown, described main control chip (MCU) uses the MC9S08AW32 of Freescale
Single-chip microcomputer U1 is main control chip, and MC9S08AW32 single-chip microcomputer U1 and communication signal converter U2 is even
Connecing, communication signal converter U2 and bus level transducer U5 collectively constitutes bus coupler,
The PTD2 foot of MC9S08AW32 single-chip microcomputer U1 and the second resistance R2 and display lamp LED1 series connection,
Second resistance R2 and display lamp LED1 constitutes operation indicating member, MC9S08AW32 single-chip microcomputer U1
PTD3 foot by feeler switch K1 ground connection.
As it is shown on figure 3, described four road analog input change-over circuits 6 can input three kinds of simulation letters
Number, including: 4-20mA DC current signal;0-5V d. c. voltage signal and 0-10V unidirectional current
Pressure signal.In Fig. 3, first input of the input terminal J5 of four road analog input change-over circuits 6
Foot and the 15th resistance R15 connect, and the other end of the 15th resistance R15 is connected to the first computing and puts
The input in the same direction of big device U6B;Signal input part AI1 is connected to the 15th resistance R15 and input
Between first input pin of terminal J5;First input pin of input terminal J5 is used for inputting 4-20mA
Current signal;Second input pin of input terminal J5 and the 17th resistance R17 connect, the 17th electricity
The other end ground connection of resistance R17;Second input pin of input terminal J5 is used for inputting 0-5V voltage letter
Number;The 3rd input pin ground connection of input terminal J5;4th input pin of input terminal J5 and the 13rd
Resistance R13 connects;4th input pin of input terminal J5 is used for inputting 0-10V DC voltage letter
Number;The other end of the 13rd resistance R13 is connected to the input in the same direction of the second operational amplifier U6A
And between the 12nd resistance R12;The other end of the 12nd resistance R12 connects the first operational amplifier
The outfan of U6B;18th electric capacity C18 be connected to the outfan of the first operational amplifier U6B with
Between the reverse input end of the first operational amplifier U6B;14th resistance R14 is connected to the first fortune
Calculate between outfan and the reverse input end of the first operational amplifier U6B of amplifier U6B;Tenth
One end of nine electric capacity C19 is connected to the 15th resistance R15 and the first operational amplifier U6B in the same direction
Between input;The other end ground connection of the 19th electric capacity C19;+ 18V power supply is the second operation amplifier
Device U6A provides voltage, the 11st resistance R11 one end to connect the anti-of the second operational amplifier U6A
To input, the other end of the 11st resistance is connected to signal output part ADAI and the tenth resistance
Between R10;The other end of the tenth resistance R10 connects the outfan of the second operational amplifier U6A;
17th electric capacity C17 one end is connected to the tenth resistance R10 and the output of the second operational amplifier U6A
Between end, the other end of the 17th electric capacity C17 is connected to the 11st resistance R11 and the second computing is put
Between the reverse input end of big device U6A;Signal output part ADAI is also with test port TP1 even
Connect;First operational amplifier U6B, the second operational amplifier U6A, the tenth resistance R10, the tenth
One resistance R11, the 12nd resistance R12, the 13rd resistance R13, the 14th resistance R14, the tenth
Five resistance R15, the 16th resistance R16, the 17th electric capacity C17, the 18th electric capacity C18 and
19 electric capacity C19 constitute voltage conversion circuit, and analog input signal is converted into 0-5V DC voltage
Signal, ADAI1, ADAI2, ADAI3 or ADAI4 foot (see Fig. 2) of input MCU,
Realize four road analog input detections.
Although, the most the present invention has been made detailed with general explanation and specific embodiment
Describing, but on the basis of the present invention, can make some modifications or improvements it, this is to this area skill
It is apparent from for art personnel.Therefore, done without departing from theon the basis of the spirit of the present invention
These modifications or improvements, belong to the scope of protection of present invention.
Claims (8)
1. four road analog input devices based on CIB-BUS bus, it is characterised in that
Described four road analog input devices include controlling bus, DC source, bus coupler, master control
Chip, 10 D/A change-over circuits and four road analog input change-over circuits, described control bus
Being connected with bus coupler, bus coupler is connected with main control chip, DC source respectively with control
Bus, bus coupler and main control chip connect, and main control chip is also with 10 D/A change-over circuits even
Connecing, 10 D/A change-over circuits and four road analog input change-over circuits connect.
Four road analog input devices the most as claimed in claim 1, it is characterised in that described
DC source is for being converted to+5V power supply by the unidirectional current controlling bus offer through power conversion chip
Supply bus coupler and main control chip use.
Four road analog input devices the most as claimed in claim 2, it is characterised in that described
Bus coupler is used for and controls bus communication, receives from controlling the communication signal of bus and transmitting
To main control chip, and it is sent to the response signal of main control chip control in bus.
Four road analog input devices the most as claimed in claim 3, it is characterised in that described master
Control chip is for receiving from the communication command controlling bus, and simulates four tunnels according to command context
Amount input change-over circuit is controlled.
Four road analog input devices the most as claimed in claim 4, it is characterised in that described 10
Position D/A change-over circuit is used for being responsible for converting analog signals into digital signal.
Four road analog input devices the most as claimed in claim 5, it is characterised in that described four
Road analog input change-over circuit controls input four road analog quantity voltage or current signals for independent,
It is selective that signal arranges total 5V, 10V and 4-20mA Three models.
Four road analog input devices the most as claimed in claim 6, it is characterised in that described master
Control chip is connected with communication signal converter, and communication signal converter is common with bus level transducer
Composition bus coupler, the PTD2 foot of main control chip and the second resistance and display lamp series connection, second
Resistance and display lamp constitute operation indicating member, and the PTD3 foot of main control chip passes through feeler switch ground connection.
Four road analog input devices the most as claimed in claim 7, it is characterised in that described four
First input pin of the input terminal of road analog input change-over circuit and the 15th resistance connect, the
The other end of 15 resistance is connected to the input in the same direction of the first operational amplifier;Signal input part is even
Receive between the 15th resistance and the first input pin of input terminal;First input pin of input terminal
For inputting 4-20mA current signal;Second input pin of input terminal and the 17th resistance connect,
The other end ground connection of the 17th resistance;Second input pin of input terminal is used for inputting 0-5V voltage letter
Number;3rd input pin ground connection of input terminal;4th input pin of input terminal and the 13rd resistance
Connect;4th input pin of input terminal is used for inputting 0-10V d. c. voltage signal;13rd electricity
The other end of resistance is connected between the input in the same direction of the second operational amplifier and the 12nd resistance;The
The other end of 12 resistance connects the outfan of the first operational amplifier;18th electric capacity is connected to
Between outfan and the reverse input end of the first operational amplifier of one operational amplifier;14th electricity
Resistance be connected to the outfan of the first operational amplifier and the first operational amplifier reverse input end it
Between;One end of 19th electric capacity is connected to the input in the same direction of the 15th resistance and the first operational amplifier
Between end;The other end ground connection of the 19th electric capacity;+ 18V power supply provides electricity for the second operational amplifier
Pressure, the 11st resistance one end connects the reverse input end of the second operational amplifier, the 11st resistance
The other end is connected between signal output part and the tenth resistance;The other end of the tenth resistance connects second
The outfan of operational amplifier;17th electric capacity one end is connected to the tenth resistance and the second operation amplifier
Between the outfan of device, the other end of the 17th electric capacity is connected to the 11st resistance and the second computing is put
Between the reverse input end of big device;Signal output part is also connected with test port;First operation amplifier
Device, the second operational amplifier, the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd electricity
Resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th electric capacity, the 18th electric capacity
Constitute voltage conversion circuit with the 19th electric capacity, analog input signal is converted into 0-5V DC voltage
Signal, inputs main control chip, it is achieved four road analog input detections.
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CN201610478431.8A CN106020035A (en) | 2016-06-27 | 2016-06-27 | Four-way analog input device based on CIB-BUS bus |
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CN201610478431.8A CN106020035A (en) | 2016-06-27 | 2016-06-27 | Four-way analog input device based on CIB-BUS bus |
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