CN102650854A - Input/output passage multiplexing intelligent controller - Google Patents
Input/output passage multiplexing intelligent controller Download PDFInfo
- Publication number
- CN102650854A CN102650854A CN2012101216413A CN201210121641A CN102650854A CN 102650854 A CN102650854 A CN 102650854A CN 2012101216413 A CN2012101216413 A CN 2012101216413A CN 201210121641 A CN201210121641 A CN 201210121641A CN 102650854 A CN102650854 A CN 102650854A
- Authority
- CN
- China
- Prior art keywords
- unit
- signal
- input
- links
- intelligent controller
- 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.)
- Pending
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses an input/output passage multiplexing intelligent controller which comprises an input measuring device and a central control device connected with the input measuring device, wherein the input measuring device comprises a signal conversion unit connected with an external signal input passage, and a constant-current source selection unit connected with the signal conversion unit; and the central control device comprises a measuring and sampling unit connected with the signal conversion unit, and a passage configuration unit respectively connected with the signal conversion unit and the constant-current source selection unit. With the adoption of the invention, the same passage can be multiplexed to measure different input signals including current, voltage, thermistance, photoresistance, dry contacts and the like, and passages can be converted manually or automatically to measure signals at different moments, without manually jumping wires. Therefore, the input/output passage multiplexing intelligent controller has the characteristic of convenience in application, flexibility and diversification, high performance price ratio, high efficiency, low alternation cost and wide application range.
Description
Technical field
The present invention relates to the building intelligent monitoring technology, particularly relate to the multiplexing intelligent controller of IO channel.
Background technology
Building automation system is the important component part of modern architecture, in intelligent building, green building and low-carbon (LC) building, has very important effect, and will become one of the basic system in wisdom city.The major control object that all kinds of electromechanical equipment and facility are building automation system in the buildings.Scale according to buildings differs, and wherein the quantity of electromechanical equipment and facility and control require to have than big difference.The control point quantity of common buildings building automation system can reach tens thousand of at most about 2000～3000, and is distributed in each floor and the corner in building.These control points have related to electric system (high voltage power distribution, power transformation, low-voltage distribution, emergency power generation), illuminator (operating illumination, emergency lighting, artistic lighting, obstacle illumination, floodlighting etc.), environmental system (air-conditioning and Cooling and Heat Source, ventilation, environmental monitoring and control, water supply and drainage, sanitary outfit, wastewater treatment), consume system, security system, traffic and transportation system and the broadcast system etc. of building.Not only electrical parameter such as monitor current, voltage also need pass through sensor, like thermistor, monitors some non-electrical quantitys.
In the conventional art, in same measurement passage, can only measure a kind of signal, so, in a building intelligent system, need the monitoring point of One's name is legion, even, same electromechanical equipment is also needed a plurality of monitoring points, to implement monitoring to unlike signal.Like this, caused building intelligent system huge and complicated, the control point layout is loaded down with trivial details and difficult in maintenance.For measuring the various signals type, in the conventional art a little improved plan be, come the manual physical circuit that switches through the mode of plug contact pin line, change the purpose of measuring different analog quantity signal types to reach.Problems such as but this mode exists signal and selects inconvenient, passage to use very flexible in practical application, and the oxidation of contact pin easy-to-rust, circuit contacts are bad.
Summary of the invention
Based on this, being necessary provides a kind of IO channel multiplexing intelligent controller to the problems referred to above, can multiplexing same channel measurement different input signals.
The multiplexing intelligent controller of a kind of IO channel comprises:
The input measurement device, the CCU that links to each other with said input measurement device;
Wherein, said input measurement device comprises that the signal conversion unit that links to each other with the external signal input channel is chosen the unit with the constant current source that said signal conversion unit links to each other;
Said CCU comprises, the measurement sampling unit that links to each other with said signal conversion unit is chosen the channel arrangement unit that the unit links to each other respectively with said signal conversion unit, said constant current source.
The multiplexing intelligent controller of above-mentioned IO channel utilizes signal conversion unit to convert signal unifications such as the electric current of outside, voltage, resistance the voltage signal of amplitude appropriateness to, and the measurement sampling unit through CCU carries out sample detecting again.The invention has the advantages that can multiplexing same channel measurement different input signals; Can comprise electric current, voltage, thermistor, photoresistance, dry contact etc.; And which kind of signal a certain passage at a time measures; Then can carry out manually or automatic switchover, need not manual wire jumper through the channel arrangement unit.So, convenient in application of the present invention, versatile and flexible, configurable, have that cost performance height, efficient are high, alteration cost is low and the characteristics of applied range.
Among embodiment, said constant current source is chosen the unit and is comprised therein:
The level amplitude adjustment unit that links to each other with said signal conversion unit;
The current source on-off control unit that links to each other with said signal conversion unit.
In the present embodiment, can detect various signals easily.For example, can temperature transition be become resistance through thermistor, measuring resistance then needs constant current source to supply power as power supply, and the size of resistance is unknown, so can utilize the level amplitude adjustment unit to carry out the adjustment of power supply, and to improve the precision of measuring.In addition, during for signals such as measurement electric current, voltages, disturb, need through current source on-off control unit forbidding constant current source for fear of signal.
Among embodiment, said CCU also comprises therein:
The communications unit that links to each other respectively with said measurement sampling unit, said channel arrangement unit.
In the present embodiment, can be easily the various signals of sample detecting be transferred to building intelligent management system end, realize the signal storage or the processing of back level; Also can receive the channel configuration information of external system or device transmission etc. easily, carry out the setting of measuring-signal.
Among embodiment, also comprise therein:
The relay output unit that links to each other with said CCU;
Wherein, said relay output unit comprises, the on-off control unit that links to each other with said communications unit.
In the present embodiment, set up the communication interface of controller of the present invention and relay, can pass through the break-make of the configuration information pilot relay of external system, further widened range of application of the present invention.
Among embodiment, also comprise therein:
The output regulating device that links to each other with said CCU;
Wherein, said output regulating device comprises, the pwm unit that links to each other with said communications unit, the filtering output unit that links to each other with said pwm unit.
In the present embodiment, can pwm unit be set, carry out the output of curtage signal through the configuration information of external system.So the present invention can be implemented in output current, voltage etc. in the same passage, and automatically switch, simple and convenient, versatile and flexible, configurable, have the cost performance height, efficient is high and alteration cost is low, the characteristics of applied range.
Among embodiment, said filtering output unit also links to each other with said signal conversion unit therein.
In the present embodiment, the curtage signal of output comes back to the sampled measurements of controller of the present invention through input channel, realizes the accuracy of the curtage of checking output.
Among embodiment, said CCU also comprises therein:
Be connected the signal comparing unit between said communications unit and the said pwm unit.
In the present embodiment, the curtage parameter of measuring through more pre-configured curtage parameter of comparing unit and actual samples, and then the curtage value of correcting pwm unit output, thus further improve the precision of output parameter.
Description of drawings
Fig. 1 is the synoptic diagram of the multiplexing intelligent controller of a kind of IO channel of the present invention;
Fig. 2 chooses cell schematics for the constant current source of the multiplexing intelligent controller of a kind of IO channel of the present invention;
Fig. 3 chooses the embodiment circuit diagram for the constant current source of the multiplexing intelligent controller of a kind of IO channel of the present invention;
Fig. 4 is the conversion of signals embodiment integrated circuit figure of the multiplexing intelligent controller of a kind of IO channel of the present invention;
Fig. 5 is one of the conversion of signals embodiment of the multiplexing intelligent controller of a kind of IO channel of a present invention circuit diagram;
Fig. 6 is two circuit diagrams of the conversion of signals embodiment of the multiplexing intelligent controller of a kind of IO channel of the present invention;
Fig. 7 is the three-circuit figure of the conversion of signals embodiment of the multiplexing intelligent controller of a kind of IO channel of the present invention;
Fig. 8 is the relay output embodiment synoptic diagram of the multiplexing intelligent controller of a kind of IO channel of the present invention;
Fig. 9 is the relay output embodiment circuit diagram of the multiplexing intelligent controller of a kind of IO channel of the present invention;
Figure 10 regulates the embodiment synoptic diagram for the output of the multiplexing intelligent controller of a kind of IO channel of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is done to describe in detail further below.
Fig. 1 is the synoptic diagram of the multiplexing intelligent controller of a kind of IO channel of the present invention, comprising:
The input measurement device, the CCU that links to each other with said input measurement device;
Wherein, said input measurement device comprises that the signal conversion unit that links to each other with the external signal input channel is chosen the unit with the constant current source that said signal conversion unit links to each other;
Said CCU comprises, the measurement sampling unit that links to each other with said signal conversion unit is chosen the channel arrangement unit that the unit links to each other respectively with said signal conversion unit, said constant current source.
The multiplexing intelligent controller of above-mentioned IO channel utilizes signal conversion unit to convert signal unifications such as the electric current of outside, voltage, resistance the voltage signal of amplitude appropriateness to, and the measurement sampling unit through CCU carries out sample detecting again.The invention has the advantages that can multiplexing same channel measurement different input signals; Can comprise electric current, voltage, thermistor, photoresistance, dry contact etc.; And which kind of signal a certain passage at a time measures; Then can carry out manually or automatic switchover, need not manual wire jumper through the channel arrangement unit.So, convenient in application of the present invention, versatile and flexible, configurable, have that cost performance height, efficient are high, alteration cost is low, can widespread use and the detection of non-electrical quantity and electrical parameter.
The general sensor that adopts is monitored in the building intelligent control system.Because on-the-spot sensor input signal can have the multiple form of expression according to the difference of sensor.For example, sensor possibly only expressed a kind of make-and-break signal (similar switch), is referred to as dry contact; Or express certain information through the number of times of break-make in the unit interval, be referred to as the frequency mode; Or through output certain amplitude voltage (be generally 0～10V) and express, be referred to as voltage system; Or express through the electric current of exporting certain amplitude, be referred to as current system; Or only be certain temperature variant resistance value, be referred to as resistance mode, according to the different corresponding relations of resistance, be respectively PT1000, NI1000, NTC10K, NTC100K etc. with temperature.
Particularly, the present invention can be implemented in and uses different input measurement patterns (PT1000, NI1000, NTC10K, NTC100K, electric current, voltage, frequency, dry contact etc.) in the same passage.As for which kind of pattern of configuration can be configured, perhaps automatically switch through detection to external input signal through the channel arrangement unit.Compare with conventional art, need not manual wire jumper, simple and convenient, versatile and flexible, have the cost performance height, efficient is high and alteration cost is low, the characteristics of applied range.This technology is applied to the on-site supervision module of building intelligence; Its effect is the on-the-spot sensor input of monitoring; Pass to the upper level main control equipment through communication, and accept the control signal of upper level main control equipment, through the output aspect actuator at scene is controlled then through communication.
Fig. 2 chooses cell schematics for the constant current source of the multiplexing intelligent controller of a kind of IO channel of the present invention.Of Fig. 2, among embodiment, said constant current source is chosen the unit and is comprised therein:
The level amplitude adjustment unit that links to each other with said signal conversion unit;
The current source on-off control unit that links to each other with said signal conversion unit.
In the present embodiment, can be easily the various signals of a passage be detected.For example, can temperature transition be become resistance through thermistor, measuring resistance then needs constant current source to supply power as power supply, and the size of resistance is unknown, so can utilize the level amplitude adjustment unit to carry out the adjustment of power supply, and to improve the precision of measuring.In addition, during for signals such as measurement electric current, voltages, disturb, need through current source on-off control unit forbidding constant current source for fear of signal.
In the above-described embodiments; Realized detection to the various signals of a passage; But the detection of building electromechanical equipment often need be arranged a plurality of monitoring points; In order further to strengthen applicability of the present invention, except the channel multiplexing function of above-mentioned realization, also need realize the function of hyperchannel operation simultaneously.For this reason, among embodiment, said input measurement device also comprises therein:
Be connected said signal conversion unit and said constant current source and choose the current source passage switch unit between the unit.
When controller of the present invention adopted hyperchannel to carry out the detection of data parameters, constant current source chooses the unit and current source passage switch unit is combined, and constitutes the variable constant current source that can measure Standard resistance range resistance measurement comparatively widely.This variable constant current source is connected to signal conversion unit through current source passage switch unit, and wherein, current source passage switch unit is assigned to each passage to current source in turn, guarantees that said signal conversion unit of a certain moment only links to each other with an input channel.Said signal conversion unit is used for unified converting input signal to voltage signal, and then samples through the digital analog interface that suitable amplifying signal gets into central control chip, obtains sampled value and stores.The processor of central authorities' control chip can be according to the passage of sampled value with the input signal of measuring, the configuration mode of input signal, and the multiplying power of input signal amplifier section amplification, the measurement numerical value of acquisition input signal.
Fig. 3 chooses the embodiment circuit diagram for the constant current source of the multiplexing intelligent controller of a kind of IO channel of the present invention.Below in conjunction with the circuit diagram of Fig. 3, explain and realize that constant current source of the present invention chooses a kind of embodiment of unit, but protection scope of the present invention is not limited to this.
As shown in Figure 3; U18 is a source of stable pressure, through the effect of U15B, will be carried on the combined resistance of R76, R77, Q10 with the voltage of the equal amplitude size of U18 source of stable pressure; Promptly producing one can be according to U18 source of stable pressure amplitude size and (combined resistance of R76, R77, Q10) relevant current source; This current source is used on input resistance, producing pressure drop, thereby the resistance signal of input is converted into voltage signal, so that follow-up AD conversion.U18 is a high precision, the voltage stabilizing chip of high stability, and temperature drift is very little, can be considered constant; Among R76, R77, the Q10, R76 and R77 are two high-precision resistance, and Q17 is NMOS pipe (Negative channel-Metal-Oxide-Semiconductor; The N type metal oxide semiconductor), receives the control of the voltage of Q11 tripod, resistance or can be considered 0; Or can be considered infinitely great; Can treat as a perfect switch, thereby obtain the combined resistance of R76, R77, Q10 or be R76 (Q10 conducting this moment), or be R76+R77 (this moment, Q10 ended).Suppose that U18 voltage stabilizing chip voltage difference is Vref, thereby can obtain the amplitude I=Vref/R76 or the I=Vre/ (R76+R77) of current source, promptly obtained the current signal of two kinds of different amplitudes.For example, need to measure resistance and the resistance about 100k about the 1k resistance, the change in voltage scope corresponding for the scope that makes resistance variations is bigger, in a disguised form improves resolution, therefore at least need two kinds of current sources.A kind of 2.5mA current source can adaptive 1k resistance left and right sides resistance measurement, the measurement that another kind of 50uA current source can adaptive 100k left and right sides resistance.So foregoing circuit has been realized the amplitude adjustment function of level amplitude adjustment unit, obviously, according to realization principle of the present invention, the adjustment of two or more different amplitudes can be realized in this unit.
In addition; The current source on-off control unit is realized the function of current source forbidding; Be used for the measuring voltage mode, current system, or be in the way of output (at this moment from the input measurement angle, being equal to the measuring voltage mode); If because this moment enabled current source then might influence the measurement of input, make the result inaccurate.
As shown in Figure 3; Network label CTR1mA is the level controling signal from central control chip, and R74, R81, Q11 constitute a phase inverter, and the effect of changing of flatting turn simultaneously electrifies; The level signal CTR1mA of 5V logic is reverse and convert the level signal of 12V logic into; This level signal control NMOS pipe Q17 makes its conducting or ends, and is used for finally changing the amplitude of current source.Wherein, Fig. 3 " Constant Current " expression is the steady current of current source.
Preferably, said current source passage switch unit can adopt an analog switch U23 to be achieved, and this analog switch is connected with label " Constant Current " shown in Figure 3.Suppose current eight the external signal input channels that have, then the effect of analog switch is to be assigned to each passage to current source in turn, guarantees a certain moment, only is connected to a passage.Analog switch also can be forbidden the function of current source, and at this moment analog switch is rendered as infinitely-great impedance, thereby hinders flowing through of electric current, realizes the forbidding of current source.When input signal is a current signal, in the time of voltage signal, need the forbidding current source, in order to avoid influence is measured.In the time of the measuring resistance signal, need launch current source, thereby convert resistance signal to voltage signal.
In sum, current source passage switch unit has been realized multichannel switching, and level amplitude adjustment unit and current source on-off control unit that constant current source is chosen in the unit have realized measuring in each passage dissimilar signals.Said constant current source is chosen the unit and is linked to each other with the channel arrangement unit of CCU, can carried out multichannel switching and the measurement pattern of a certain passage is configured by central control chip.
Fig. 4 is the conversion of signals embodiment integrated circuit figure of the multiplexing intelligent controller of a kind of IO channel of the present invention.Below in conjunction with the circuit diagram of Fig. 4, a kind of embodiment of realizing signal conversion unit of the present invention is described, but protection scope of the present invention is not limited to this.
It is said to connect example, supposes to have eight external signal input channels, and then each passage all has so similar circuit as shown in Figure 4 to realize conversion of signals.Label shown in Figure 4 " UI2 " links to each other with above-mentioned analog switch U23, is the electric current from current source passage switch unit.Label shown in Figure 4 " U2 " is connected to output control part, also is simultaneously the anode (negative terminal is ground level GND1) of measuring input signal." U2C " shown in Figure 4 is the level controling signal from central control chip." IN2 " shown in Figure 4 will be connected to the input channel switch unit of subordinate.
R119 and R110 narrow down to suitable amplitude with the voltage signal of " U2 " point, because when U2 point voltage signal is excessive, if do not dwindle processing, can't obtain rational sampled value to these excessive signals so, thereby can't calculate the voltage that U2 is ordered.In addition, diode D18 is used to protect analog switch U23.
Following Fig. 5 to Fig. 7 branch situation is told about the principle of conversion of signals.
Fig. 5 is one of the conversion of signals embodiment of the multiplexing intelligent controller of a kind of IO channel of a present invention circuit diagram.What Fig. 5 explained is the situation that resistance signal converts the suitable voltage signal to.
As shown in Figure 5, testing resistance RX is connected between " U2 " and " GND1 ", and is parallelly connected with two road.At this moment, the control signal of central control chip " U2C " will present low level, thereby the parallel port of R107 and Q17 will present great resistance, have only faint dark current to stay.Flow through behind the diode D18 from the current signal of the UI2 of analog switch U23, be carried on three parallel branches, produce pressure drop.Through measuring the size of this voltage, can obtain this parallel resistance.Known this parallel resistance can further be obtained testing resistance Rx.According to the size of Rx, can select the current source amplitude of different sizes, thereby produce the voltage of suitable size at the U2 point.
Fig. 6 is two circuit diagrams of the conversion of signals embodiment of the multiplexing intelligent controller of a kind of IO channel of the present invention.What Fig. 6 explained is the situation that current signal converts the suitable voltage signal to.
As shown in Figure 6, current signal flows into from the U2 point.In this case, will forbid current source, thereby UI2 point electric current is 0, measures in order to avoid influence input signal.Signal " U2C " will be high level, thereby the passage that R107 connects with Q17 will externally be rendered as the resistance of R107.The flow through parallel resistance of two branch roads of current signal, and produce a pressure drop at the U2 point.This pressure drop can be measured be come out.Chip measures after this voltage, calculates the size of input current according to the resistance of parallel resistance.
Fig. 7 is the three-circuit figure of the conversion of signals embodiment of the multiplexing intelligent controller of a kind of IO channel of the present invention.What Fig. 7 explained is the situation that external voltage signal converts the suitable voltage signal to.
As shown in Figure 7, voltage signal is carried between U2 point and the ground level.In this case, will forbid UI2, measure in order to avoid current source has influence on voltage signal.U2C will be low level, thereby reduce load, in order to avoid the input signal distortion.Can directly measure the voltage signal that U2 is ordered, the voltage signal of promptly importing need not extra conversion.
Especially, in the time of need carrying out the output of voltage, electric current, for the output signal of voltage, electric current; Because the anode of output signal is also at the U2 point; In like manner also can measure output voltage of signals size, this voltage amplitude information can be used to regulate the voltage of output, the current signal amplitude.
Therein among embodiment; Also comprise; Be connected the input signal channel switch unit between said signal conversion unit and the said measurement sampling unit, and be connected the signal amplification unit between said input signal channel switch unit and the said measurement sampling unit.
For the input signal channel switch unit, also can realize through an analog switch U21.Analog switch U21 links to each other with the label " IN2 " of above-mentioned signal conversion unit; Reception comes from the process of each passage and dwindles voltage signal afterwards; Analog switch U21 also links to each other with the signal amplification unit of subordinate, and preferably, said signal amplification unit adopts amplifier to realize; U21 receives the amplifier in-phase end, to carry out the amplification of suitable yardstick.Owing to must choose a certain passage, the disable bit of U21 can ground connection, saves a mouthful line.Each passage becomes the input of one tunnel voltage through analog switch U21, and this road voltage input meeting obtains comparatively desirable voltage signal through the input signal amplifier section of level later, adopts the unit to carry out digital-to-analogue through the measurement of CCU again and measures.Central authorities' control chip calculates according to the sampled value that measures, and can obtain the sensor values (voltage/current/resistance) of respective channel.
So far, accomplished the processing of all types of input signals, the measuring-signal that obtains from signal amplification unit will be loaded into the digital analog interface of central control chip, and the D/A converting circuit of chip internal is accomplished the sampling to said measuring-signal.The processor of chip is according to sampled value, the enlargement ratio of said signal amplification unit, and the pattern of input signal (resistance/voltage/current), and the amplitude of current source (for resistance signal) calculates the size of input signal.
In order to realize in the building supervisory system, to the Long-distance Control of a plurality of controllers of the present invention, among embodiment, said CCU also comprises therein:
The communications unit that links to each other respectively with said measurement sampling unit, said channel arrangement unit.
In the present embodiment, can be easily the various signals of sample detecting be transferred to building intelligent management system end, realize the signal storage or the processing of back level; Also can receive the channel configuration information of external system or device transmission etc. easily, carry out the setting of measuring-signal.
On the integral body, there are two effects said communications unit, and an effect is to be used for upwards transmitting the data of sensor, and the control information of receiving actuator downwards; Another effect is that to be used for being provided with certain port of general input be do input on earth, still does output, should be in which kind of mode.The relay output need carry out the actuator of break-make control especially to some, and general input is used for accomplishing the measurement of input and the realization of output.Central authorities' control chip is the cammander, and the need of work of each several part carries out under the control of central control chip.
Fig. 8 is the relay output embodiment synoptic diagram of the multiplexing intelligent controller of a kind of IO channel of the present invention.Compared to Figure 1, the embodiment of Fig. 8 had both realized the measurement of input signal, had also realized the control of relay output.
Among embodiment, also comprise therein:
The relay output unit that links to each other with said CCU;
Wherein, said relay output unit comprises, the on-off control unit that links to each other with said communications unit.
In the present embodiment, set up the communication interface of controller of the present invention and relay, can pass through the break-make of the configuration information pilot relay of external system, further widened range of application of the present invention.
Be connected the light-coupled isolation unit between said communications unit and the said on-off control unit.
Fig. 9 is the relay output embodiment circuit diagram of the multiplexing intelligent controller of a kind of IO channel of the present invention.Below in conjunction with the circuit diagram of Fig. 9, a kind of embodiment of realizing relay output unit of the present invention is described, but protection scope of the present invention is not limited to this.
As shown in Figure 9, DO2 is the 5V logic control signal from central control chip.The chip controls part is carried out photoelectricity with actuating of relay part through optocoupler TLP521-1 and is isolated the security and the anti-interference of raising system.When DO2 is high level, the optocoupler conducting, the L2 pilot lamp is luminous, and indication DO output control command is sent.Because the effect of optocoupler and triode Q6, the relay coil loop is with conducting, thus the relay coil adhesive, the NO closing of contact, the NC contact is broken off, and accomplishes the relay output function.Wherein, D12 is reverse peaking voltage absorption diode.Because there is big inductance in relay coil, when it transfers disconnection to by closure, owing to discharge the electromagnetic energy of being preserved, thus need to give an one of which backward channel, otherwise may puncture triode and optocoupler.
Figure 10 regulates the embodiment synoptic diagram for the output of the multiplexing intelligent controller of a kind of IO channel of the present invention.Compared to Figure 1, the embodiment of Figure 10 had both realized the measurement of input signal, had also realized the output control of voltage or current signal.
Among embodiment, also comprise therein:
The output regulating device that links to each other with said CCU;
Wherein, said output regulating device comprises, the pwm unit that links to each other with said communications unit, the filtering output unit that links to each other with said pwm unit.
In the present embodiment, can pwm unit be set, carry out the output of curtage signal through the configuration information of external system.So the present invention can be implemented in output current, voltage etc. in the same passage, and automatically switch, simple and convenient, versatile and flexible, have the cost performance height, efficient is high and alteration cost is low, the characteristics of applied range.
Shown in figure 10, pwm unit receives 5V level logic PWM (Pulse Width Modulation, the pulse-length modulation) signal that comes from central control chip.Pwm unit links to each other with the filtering output unit, and pwm signal is carried out LPF.The cutoff frequency of filtering is
through after the low-pass filter, will obtain one and the proportional direct current signal of PWM ripple dutycycle.Preferably, can amplify output through signal amplifier to this signal again.
Among embodiment, said filtering output unit also links to each other with said signal conversion unit therein.
In the present embodiment, the curtage signal of output comes back to the sampled measurements of controller of the present invention through input channel, realizes the accuracy of the curtage of checking output.
Among embodiment, said CCU also comprises therein:
Be connected the signal comparing unit between said communications unit and the said pwm unit.
In the present embodiment, the curtage parameter of measuring through more pre-configured curtage parameter of comparing unit and actual samples, and then the curtage value of correcting pwm unit output, thus further improve the precision of output parameter.
Be connected the relative isolated location between said filtering output unit and the said signal conversion unit.
Relatively isolated location comprises the small-signal diode of the output control terminal of the input measurement that is connected said signal conversion unit and said filtering output unit, and the inverse current of this diode is extremely faint, plays buffer action to a certain degree.When carrying out input measurement, the level of output control keeps the degree (for simplicity, can directly get output 0V) lower than input measurement signal voltage, the then unlikely input measurement part that influences.In addition, said relative isolated location also comprises current-limiting resistance, when system or external circuit are in ERST and when excessive, can cause current-limiting resistance to burn through the electric current of current-limiting resistance, thus the protection internal circuit.
Preferably; Central authorities' control chip generates fast-changing PWM ripple; Low-pass filter unit carries out filtering to this PWM ripple, thereby obtains a voltage signal that milder ripple is less, and signal amplifies with output this voltage signal is carried out the amplification of suitable amplitude and exports it; The signal of output is through after the relative isolated location; Insert in the circuit such as signal conversion unit of input measurement device, measure sampling unit and again the signal of said output is measured, thereby central control chip measures the actual measured value of output signal.At last, said signal comparing unit compares the amplitude of the pre-configured output signal that actual measured value that obtains and said communications unit receive, and just can regulate the actual signal of exporting, thereby can obtain the output of degree of precision.
In sum, the input that on-the-spot building equipment needs possibly be certain voltage or certain electric current, or even needs the control of energising and outage, is referred to as voltage-type output, current mode output respectively, and relay output (or thyristor output).Obviously, can the be multiplexing same passage of the preferred embodiments of the invention is realized the measurement of input signal (current/voltage/resistance), and the control of output signal (current/voltage/relay on-off).Isolate relatively through diode between two parts; When carrying out input measurement, output is failure to actuate, when exporting control; Can measure the amplitude of output signal simultaneously through the input measurement link; Signal amplitude according to this measuring-signal that feeds back and needs output compares, and can further regulate amplitude output signal then, can improve the precision and stability of output signal like this.
For instance; Suppose to need output 5V voltage, but because precision, the fluctuation of power supply and the problems such as variation of external devices impedance of the device of output own, maybe actual output have only 4.5V; The input measurement part can detect this actual measured value of 4.5V more accurately; Central authorities' control chip finds that output is on the low side, just regulates the magnitude of voltage of output, and it is increased.After the adjusting, continue to measure, till consistent with desirable value.
Through experiment and use, the scheme that this patent is described can be carried out the measurement more accurately of multiple analog quantity input pattern signal easily at same port, also can compare exact current output or voltage output simultaneously.
Through the description of above embodiment, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement through hardware.Based on such understanding; All or part of can the coming out that technical scheme of the present invention contributes to background technology with the embodied of software product; This computer software product can be stored in the storage medium, like ROM/RAM, magnetic disc, CD etc., comprises that some instructions are with so that a computer equipment (can be a personal computer; Server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (10)
1. the multiplexing intelligent controller of IO channel is characterized in that, comprising:
The input measurement device, the CCU that links to each other with said input measurement device;
Wherein, said input measurement device comprises that the signal conversion unit that links to each other with the external signal input channel is chosen the unit with the constant current source that said signal conversion unit links to each other;
Said CCU comprises, the measurement sampling unit that links to each other with said signal conversion unit is chosen the channel arrangement unit that the unit links to each other respectively with said signal conversion unit, said constant current source.
2. the multiplexing intelligent controller of IO channel according to claim 1 is characterized in that, said constant current source is chosen the unit and comprised:
The level amplitude adjustment unit that links to each other with said signal conversion unit;
The current source on-off control unit that links to each other with said signal conversion unit.
3. the multiplexing intelligent controller of IO channel according to claim 2 is characterized in that, said input measurement device also comprises:
Be connected said signal conversion unit and said constant current source and choose the current source passage switch unit between the unit.
4. according to the multiplexing intelligent controller of each described IO channel of claim 1 to 3, it is characterized in that said CCU also comprises:
The communications unit that links to each other respectively with said measurement sampling unit, said channel arrangement unit.
5. the multiplexing intelligent controller of IO channel according to claim 4 is characterized in that, also comprises:
The relay output unit that links to each other with said CCU;
Wherein, said relay output unit comprises, the on-off control unit that links to each other with said communications unit.
6. the multiplexing intelligent controller of IO channel according to claim 5 is characterized in that, also comprises:
Be connected the light-coupled isolation unit between said communications unit and the said on-off control unit.
7. the multiplexing intelligent controller of IO channel according to claim 4 is characterized in that, also comprises:
The output regulating device that links to each other with said CCU;
Wherein, said output regulating device comprises, the pwm unit that links to each other with said communications unit, the filtering output unit that links to each other with said pwm unit.
8. the multiplexing intelligent controller of IO channel according to claim 7 is characterized in that:
Said filtering output unit also links to each other with said signal conversion unit.
9. the multiplexing intelligent controller of IO channel according to claim 8 is characterized in that said CCU also comprises:
Be connected the signal comparing unit between said communications unit and the said pwm unit.
10. the multiplexing intelligent controller of IO channel according to claim 9 is characterized in that, also comprises:
Be connected the relative isolated location between said filtering output unit and the said signal conversion unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101216413A CN102650854A (en) | 2012-04-23 | 2012-04-23 | Input/output passage multiplexing intelligent controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101216413A CN102650854A (en) | 2012-04-23 | 2012-04-23 | Input/output passage multiplexing intelligent controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102650854A true CN102650854A (en) | 2012-08-29 |
Family
ID=46692873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101216413A Pending CN102650854A (en) | 2012-04-23 | 2012-04-23 | Input/output passage multiplexing intelligent controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102650854A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016273A1 (en) * | 2015-07-28 | 2017-02-02 | 无锡华润上华半导体有限公司 | Accelerator |
| CN106468897A (en) * | 2015-08-21 | 2017-03-01 | 博世力士乐(西安)电子传动与控制有限公司 | Interface arrangement and processing system |
| CN109558350A (en) * | 2018-11-20 | 2019-04-02 | 海信（山东）空调有限公司 | A kind of program monitoring multiplexing port, control method and household electrical appliance |
| CN113687625A (en) * | 2021-10-26 | 2021-11-23 | 菲尼克斯(南京)智能制造技术工程有限公司 | Configurable circuit module of analog channel type |
| WO2023071532A1 (en) * | 2021-11-01 | 2023-05-04 | 上海美控智慧建筑有限公司 | Input-output control circuit, controller, and air conditioner |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2840227Y (en) * | 2005-11-14 | 2006-11-22 | 上海贝岭股份有限公司 | Multiplexing circuit for multi-channel various signal intermix measurement |
| CN200941156Y (en) * | 2006-05-31 | 2007-08-29 | 北京利达恒信科技发展有限公司 | Controller of realizing multiple measurements and control function by single port |
| CN101329812A (en) * | 2008-07-24 | 2008-12-24 | 东南大学 | Multi-channel and high-accuracy data acquisition unit |
| WO2009034543A1 (en) * | 2007-09-13 | 2009-03-19 | Nxp B.V. | A signal sampling circuit |
| CN201449411U (en) * | 2009-07-02 | 2010-05-05 | 苏州经贸职业技术学院 | Multichannel current sampling circuit |
| US20110066402A1 (en) * | 2009-09-17 | 2011-03-17 | Tektronix, Inc. | Mixed signal acquisition system for a measurement instrument |
| CN201956988U (en) * | 2011-02-22 | 2011-08-31 | 深圳信息职业技术学院 | Controller |
| CN202632000U (en) * | 2012-04-23 | 2012-12-26 | 广州市新锘威智能科技有限公司 | Input and output channel multiplex intelligent controller |
-
2012
- 2012-04-23 CN CN2012101216413A patent/CN102650854A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2840227Y (en) * | 2005-11-14 | 2006-11-22 | 上海贝岭股份有限公司 | Multiplexing circuit for multi-channel various signal intermix measurement |
| CN200941156Y (en) * | 2006-05-31 | 2007-08-29 | 北京利达恒信科技发展有限公司 | Controller of realizing multiple measurements and control function by single port |
| WO2009034543A1 (en) * | 2007-09-13 | 2009-03-19 | Nxp B.V. | A signal sampling circuit |
| CN101329812A (en) * | 2008-07-24 | 2008-12-24 | 东南大学 | Multi-channel and high-accuracy data acquisition unit |
| CN201449411U (en) * | 2009-07-02 | 2010-05-05 | 苏州经贸职业技术学院 | Multichannel current sampling circuit |
| US20110066402A1 (en) * | 2009-09-17 | 2011-03-17 | Tektronix, Inc. | Mixed signal acquisition system for a measurement instrument |
| CN201956988U (en) * | 2011-02-22 | 2011-08-31 | 深圳信息职业技术学院 | Controller |
| CN202632000U (en) * | 2012-04-23 | 2012-12-26 | 广州市新锘威智能科技有限公司 | Input and output channel multiplex intelligent controller |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016273A1 (en) * | 2015-07-28 | 2017-02-02 | 无锡华润上华半导体有限公司 | Accelerator |
| CN106403920A (en) * | 2015-07-28 | 2017-02-15 | 无锡华润上华半导体有限公司 | Acceleration device |
| CN106403920B (en) * | 2015-07-28 | 2019-02-22 | 无锡华润上华科技有限公司 | Accelerometer |
| US10801839B2 (en) | 2015-07-28 | 2020-10-13 | Csmc Technologies Fab2 Co., Ltd. | Accelerator |
| CN106468897A (en) * | 2015-08-21 | 2017-03-01 | 博世力士乐(西安)电子传动与控制有限公司 | Interface arrangement and processing system |
| CN109558350A (en) * | 2018-11-20 | 2019-04-02 | 海信（山东）空调有限公司 | A kind of program monitoring multiplexing port, control method and household electrical appliance |
| CN109558350B (en) * | 2018-11-20 | 2023-04-14 | 海信空调有限公司 | Program monitoring multiplexing port, control method and household appliance |
| CN113687625A (en) * | 2021-10-26 | 2021-11-23 | 菲尼克斯(南京)智能制造技术工程有限公司 | Configurable circuit module of analog channel type |
| WO2023071532A1 (en) * | 2021-11-01 | 2023-05-04 | 上海美控智慧建筑有限公司 | Input-output control circuit, controller, and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103558495B (en) | A kind of multi-channel circuit on-off detection device | |
| CN102650854A (en) | Input/output passage multiplexing intelligent controller | |
| US8416069B2 (en) | Systems and methods for controlling communication over a power distribution network | |
| EP3021090B1 (en) | Control system with i/o module | |
| CN203551134U (en) | Multipath analog quantity industrial acquisition device | |
| CN204439709U (en) | A kind of information collecting device of electricity load management terminal | |
| CN202218159U (en) | DC (Direct Current) switch power supply applying double-ring four-feedback control loop | |
| CN105813344B (en) | The optical power control system and control method of a kind of optical module | |
| US20140284997A1 (en) | Current regulation circuit, power over ethernet system, and method | |
| CN103792445A (en) | Fully intelligent electric power overcurrent protection tester | |
| CN208609236U (en) | Lighting System Controller circuit | |
| CN202632000U (en) | Input and output channel multiplex intelligent controller | |
| WO2021129794A1 (en) | Auxiliary control circuit for power amplification module, power amplification module, and communication device | |
| CN203629707U (en) | Multifunctional programmable temperature measurement device | |
| CN203149429U (en) | Adjustable constant flow source circuit | |
| CN202083974U (en) | Load driving circuit | |
| CN101414187B (en) | On-line detection device of control platform | |
| CN107342059B (en) | A kind of current control circuit and control method, backlight module, display device | |
| CN113300205B (en) | Fiber laser protection system and device | |
| CN209659300U (en) | Communication device and its receiving unit and transmission unit | |
| CN105099411A (en) | Pulse width modulation circuit | |
| KR20120111620A (en) | Analog input module of plc and method for detecting disconnection in the same | |
| CN206773055U (en) | A kind of output extremum extracting circuit for parallel channel | |
| CN204634058U (en) | Conjunction/splitter and DC channel self adaptation gating circuit | |
| CN110708802A (en) | LED dimming circuit, dimming method and LED control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20160106 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |