CN112947215B - Data acquisition feedback system - Google Patents
Data acquisition feedback system Download PDFInfo
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- CN112947215B CN112947215B CN202110228853.0A CN202110228853A CN112947215B CN 112947215 B CN112947215 B CN 112947215B CN 202110228853 A CN202110228853 A CN 202110228853A CN 112947215 B CN112947215 B CN 112947215B
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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
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
Abstract
The invention discloses a data acquisition feedback system, in the scheme, a plurality of data processing modules are connected with a plurality of protection triggering modules, the number of the protection triggering modules is less than that of the data processing modules, and the protection triggering modules are connected with a controller. Specifically, the data acquired by the sensors are respectively converted into corresponding state signals by the data processing modules, and the protection triggering module outputs a protection signal to the controller when receiving that the state signal output by any corresponding data processing module is a fault signal, so that the controller judges fault data in the data acquired by the sensors when the protection triggering module outputs the protection signal. Therefore, in the mode, the plurality of data processing modules do not need to be connected with the plurality of protection trigger modules one by one, the number of the protection trigger modules is reduced, the pin resource pressure of the controller is further reduced, and meanwhile, the cost and the space of circuit design are saved.
Description
Technical Field
The invention relates to the field of control, in particular to a data acquisition feedback system.
Background
In the control field, a complete product needs a data acquisition and feedback system to acquire and feedback various real-time variable data in real time during the working period of the product, and the data acquisition and feedback system is generally composed of a data processing module and a corresponding protection triggering module.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a data acquisition feedback system in the prior art. In the prior art, one data processing module corresponds to one protection triggering module, an output end of the protection triggering module is connected with a controller, the data processing module converts data acquired by a sensor corresponding to the data processing module into a corresponding state signal, and the protection triggering module corresponding to the data processing module generates a corresponding protection signal according to the state signal and sends the protection signal to the controller. In actual operation, in order to ensure safe and reliable operation of a product as much as possible, a plurality of variable data in the product are generally monitored, so that a plurality of sensors, a plurality of data processing modules and a plurality of protection trigger modules are required, and a controller needs to receive protection signals generated by each protection trigger module by using ports with the same number as the protection trigger modules. Therefore, the mode greatly occupies the port of the controller, the pin resource pressure of the controller is increased, and the cost and the space of circuit design are increased due to the design of the plurality of protection trigger modules.
Disclosure of Invention
The invention aims to provide a data acquisition feedback system, which can reduce the number of protection trigger modules, further reduce the pin resource pressure of a controller and save the cost and space of circuit design.
In order to solve the above technical problem, the present invention provides a data acquisition feedback system, including:
the input ends of the N data processing modules are respectively connected with the N sensors and used for converting data collected by different sensors into corresponding state signals, and the state signals comprise fault signals;
the M protection trigger modules are respectively connected with the input ends of the N data processing modules and the output ends of the N data processing modules and the controller, and are used for outputting protection signals to the controller when receiving any one of the corresponding data processing modules outputting the fault signals; wherein N, M are positive integers and N is greater than M;
the controller is used for judging fault data in the data collected by the sensor when the protection triggering module outputs the protection signal.
Preferably, the data processing modules are of different types, and the data processing modules of the same type correspond to one protection triggering module, wherein the number of at least one type of data processing module is not less than 2.
Preferably, the types of the data processing module include a direct-current voltage data processing module, an alternating-current voltage data processing module, a temperature data processing module and a pressure data processing module.
Preferably, the method further comprises the following steps:
the anodes of the diodes are respectively in one-to-one correspondence with the output ends of the protection trigger modules, and the cathodes of the diodes are respectively connected with the control end of the switch, so that the diodes are conducted when the corresponding protection trigger modules output protection signals;
the first end of the first resistor is connected with a first power supply, the second end of the first resistor is connected with a switch of the first end of the first resistor and the input end of the controller respectively, and the first resistor and the second resistor are used for being conducted when any one of the diodes is conducted, so that the controller can judge fault data in data collected by the sensor when the switch is conducted;
the second end of the first resistor is grounded.
Preferably, the method further comprises the following steps:
the anodes of the diodes are respectively in one-to-one correspondence with the output ends of the protection trigger modules, and the cathodes of the diodes are respectively connected with the control end of the switch, so that the diodes are conducted when the corresponding protection trigger modules output protection signals;
the first end of the switch is respectively connected with the second end of the first resistor and the input end and the second end of the controller, and the switch is grounded and used for conducting when any one of the diodes is conducted, so that the controller can judge fault data in data collected by the sensor when the switch is conducted;
the first end is connected with the first resistor of the second power supply.
Preferably, the method further comprises the following steps:
and the warning modules are respectively arranged between the protection trigger modules and the diodes and used for giving out warning when the protection trigger modules correspondingly output protection signals.
Preferably, M =1.
Preferably, the data processing modules are of different types;
the system also comprises a total logic gate and a branch logic gate; the input end of the branch logic gate is connected with the output end of the data processing module of the same type, the output end of the branch logic gate is connected with the input end of the main logic gate, the enabling end of the branch logic gate is connected with the controller, and the output end of the main logic gate is connected with the input end of the protection triggering module;
the branch logic gate is used for outputting a first level signal to the total logic gate when receiving the fault signal output by any one of the data processing modules;
the total logic gate is used for outputting a second level signal to the protection trigger module when receiving that any one of the branch logic gates outputs the first level signal;
the protection triggering module is specifically used for outputting a protection signal to the controller when receiving the second level signal;
the controller is further used for judging which type of data acquired by the sensor corresponding to the data processing module has fault data based on the protection signal, and controlling the sub logic gate corresponding to the sensor with fault data to be disconnected.
Preferably, the fault signal may be a high (low) level signal, and the total logic gate and the fractional logic gate are combinational logic gates which only require a change of a first level signal at one of the plurality of inputs of the fractional logic gate and finally can cause a change of a second level signal of the total logic gate.
The invention provides a data acquisition feedback system, in the scheme, a plurality of data processing modules are connected with a plurality of protection triggering modules, the number of the protection triggering modules is less than that of the data processing modules, and the protection triggering modules are connected with a controller. Specifically, the plurality of data processing modules respectively convert the data acquired by the plurality of sensors into corresponding status signals, and the protection triggering module outputs a protection signal to the controller when receiving that the status signal output by any one of the corresponding data processing modules is a fault signal, so that the controller determines fault data in the data acquired by the sensors when the protection triggering module outputs the protection signal. Therefore, in the mode, the plurality of data processing modules do not need to be connected with the plurality of protection trigger modules one by one, the number of the protection trigger modules is reduced, the pin resource pressure of the controller is further reduced, and meanwhile, the cost and the space of circuit design are saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a data acquisition feedback system in the prior art;
FIG. 2 is a schematic structural diagram of a data acquisition feedback system according to the present invention;
fig. 3 is a schematic structural diagram of the connection between the ac voltage data processing module and the protection triggering module according to the present invention;
fig. 4 is a schematic structural diagram of a connection between a dc voltage data processing module and a protection trigger module according to the present invention;
FIG. 5a is a schematic structural diagram of a fourth embodiment of the present invention;
FIG. 5b is a schematic structural diagram of a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an eighth embodiment of the present invention.
Detailed Description
The core of the invention is to provide a data acquisition feedback system, which can reduce the number of protection trigger modules, further reduce the pin resource pressure of a controller and simultaneously save the cost and space of circuit design.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a data acquisition feedback system according to the present invention, in which N data processing modules, 1 protection triggering module, and 1 controller are taken as examples.
The system comprises:
the input end of the N data processing modules 1 is respectively connected with the N sensors and is used for converting data collected by different sensors into corresponding state signals, and the state signals comprise fault signals;
the M protection trigger modules 2 are respectively connected with the input ends of the N data processing modules 1 and the output ends of the N data processing modules 1 are connected with the controller 3, and are used for outputting protection signals to the controller 3 when receiving fault signals output by any one corresponding data processing module 1; wherein N, M are positive integers and N is greater than M;
and the controller 3 is used for judging fault data in the data collected by the sensor when the protection triggering module 2 outputs the protection signal.
The applicant considers that, in the prior art, the mode that one data processing module corresponds to one protection trigger module greatly occupies a port of a controller, increases the pin resource pressure of the controller, and the design of a plurality of protection trigger modules increases the cost and space of circuit design.
In this embodiment, the plurality of data processing modules 1 are connected to the plurality of protection trigger modules 2, the number of the protection trigger modules 2 is smaller than that of the data processing modules 1, and the protection trigger modules 2 are connected to the controller 3. Specifically, the data processing modules 1 convert the data collected by the sensors into corresponding status signals, and the protection triggering module 2 outputs a protection signal to the controller 3 when receiving that the status signal output by any one of the corresponding data processing modules 1 is a fault signal, so that the controller 3 determines that there is fault data in the data collected by the sensors when the protection triggering module 2 outputs the protection signal.
It should be noted that, in order to maximally reduce the pin resource pressure of the controller 3, in practical applications, M is usually set to 1, that is, N data processing modules 1 correspond to 1 protection trigger module 2, and the protection trigger module 2 is further connected to a pin of the controller 3.
Of course, the value of M is not limited to 1, and the value of M may be set according to actual circumstances, and the present application is not particularly limited thereto.
In addition, the protection trigger module 2 is generally an optical coupler, wherein a pin 1 (i.e. an anode of the light emitting diode) of the optical coupler serves as an input end of the protection trigger module 2, a pin 2 (i.e. a cathode of the light emitting diode) of the optical coupler is grounded, a pin 4 (i.e. a cathode of the phototransistor) of the optical coupler is grounded, a pin 5 of the optical coupler serves as an output end of the protection trigger module 2, and a pin 6 (i.e. an anode of the phototransistor) of the optical coupler is grounded.
Of course, the protection triggering module 2 is not limited to an optical coupler in general, and the application is not limited thereto.
In conclusion, in this manner, the plurality of data processing modules 1 do not need to be connected to the plurality of protection trigger modules 2 one by one, so that the number of the protection trigger modules 2 is reduced, the pin resource pressure of the controller 3 is reduced, and the cost and space of circuit design are saved.
On the basis of the above-described embodiment:
as a preferred embodiment, the data processing modules 1 are of different types, and the data processing modules 1 of the same type correspond to one protection triggering module 2, wherein the number of the data processing modules 1 of at least one type is not less than 2.
In order to distinguish between different types of data processing modules 1 for subsequent localization of the fault location. In this embodiment, the data processing modules 1 have different types, and the data processing modules 1 of the same type correspond to one protection triggering module 2, wherein the number of the data processing modules 1 of at least one type is not less than 2.
As a preferred embodiment, the types of the data processing module 1 include a direct voltage data processing module, an alternating voltage data processing module, a temperature data processing module, and a pressure data processing module.
The types of the data processing module 1 herein include a direct-current voltage data processing module, an alternating-current voltage data processing module, a temperature data processing module, and a pressure data processing module.
Referring to fig. 3 and 4, fig. 3 is a schematic structural diagram illustrating a connection between an ac voltage data processing module and a protection trigger module according to the present invention, wherein the protection trigger module takes an optical coupler as an example; fig. 4 is a schematic structural diagram of a connection between a dc voltage data processing module and a protection trigger module according to the present invention, where the protection trigger module takes an optical coupler as an example.
The alternating voltage data processing module receives an alternating voltage signal, and after a series of decoupling, amplification, comparison and other processing, a protection signal is finally output through the photoelectric coupler, and finally the protection signal is received by the controller 3 to judge whether to trigger circuit protection.
Taking the ac voltage data processing module and the protection triggering module 2 (i.e. the optical coupler) as an example, specifically, the ac voltage signal to be processed (ac input 1) passes through the resistorR 1 And a decoupling capacitorC 1 Leading-in operational amplifier of AC voltage signal with decoupled outputU 1 The pins 3 at the same direction are put by fortuneU 1 Forming a voltage follower, further buffering the AC signal and amplifying it from the slaveU 1 The output pin 1 outputs an AC voltage signal, and then the AC voltage signal is introduced into the output pinD 1 ~D 4 And operational amplifierU 2 The bridge rectifier circuit is composed to output a positive voltage signal when the input AC voltage signal is positiveD 1 、D 4 The diode is conducted, and the alternating voltage signal enters the operational amplifierU 2 Pin 3 at the same direction end and is operated by an operational amplifierU 2 The output pin 1 outputs a positive voltage signal when the input AC voltage signal is a negative voltage signalD 2 、D 3 The diode is conducted, and the alternating voltage signal enters the operational amplifierU 2 Reverse terminal pin 2, also by operational amplifierU 2 The output pin 1 outputs a positive voltage signal, so that the alternating current signal is rectified into a stable direct current positive voltage signal and then passes through the operational amplifierU 3 Composed of a comparator and a pass resistorR 8 And a decoupling capacitorC 2 The voltage 15V of decoupling treatment is compared, when the DC voltage is higher than 15V, the comparator outputs high level, and the high level is passed through diodeD 5 Resistance, and a method for manufacturing the sameR 10 And a decoupling capacitorC 3 A primary side pin 1 of the optocoupler PC1 is introduced to enable a light emitting diode LED on the primary side of the optocoupler PC1 to emit light so as to enable the LED to be conductedAn output pin 5 on the secondary side of the optocoupler PC1 outputs a positive voltage signal subjected to isolation conversion, when the direct current voltage is lower than 15V, the comparator outputs a low level, finally, the output voltage signal on the secondary side of the optocoupler PC1 is made to be a low level signal, then, the controller 3 judges and processes the high level signal and the low level signal (protection signal), and finally, whether protection work is triggered is selected. The method adopts a mode that one path of alternating current input corresponds to one path of protection trigger signal output, thereby effectively improving the safety of the circuit.
In addition, the dc voltage data processing module in fig. 4 is a common dc sensor data processing circuit, a dc voltage signal (dc input 1) outputs a decoupled dc voltage signal through a resistor R1 and a decoupling capacitor C1, and then enters an operational amplifier U1 to form a voltage follower for isolation buffering, and then the dc voltage signal is introduced into a comparator formed by an operational amplifier U2 to be compared with a voltage 15V decoupled from the resistor R4 and the decoupling capacitor C2, when the dc voltage is higher than 15V, a high-level protection trigger signal is output through isolation protection by an opto-coupler PC1, and when the dc voltage is lower than 15V, a low-level protection trigger signal is output through isolation protection by the opto-coupler PC1, and finally the protection trigger signal is received and judged by a controller to play a role of protection.
It should be noted that the types of the N sensors include a dc voltage sensor connected to the dc voltage data processing module, an ac voltage sensor connected to the ac voltage data processing module, a temperature sensor connected to the temperature data processing module, and a pressure sensor connected to the pressure data processing module.
Of course, the type of the data processing module 1 is not limited to the dc voltage data processing module, the ac voltage data processing module, the temperature data processing module and the pressure data processing module, and the type of the sensor is not limited to the dc voltage sensor, the ac voltage sensor, the temperature sensor and the pressure sensor, and the application is not limited to the type of the data processing module 1 and the sensor.
As a preferred embodiment, the method further comprises the following steps:
the anodes of the diodes are respectively connected with the output ends of the protection trigger modules 2 in a one-to-one correspondence manner, and the cathodes of the diodes are connected with the control end of the switch, so that the diodes are conducted when the corresponding protection trigger modules 2 output protection signals;
the first end of the first resistor is connected with a first power supply, the second end of the first resistor is connected with a switch of the first end of the first resistor and the input end of the controller 3 respectively, and the first resistor and the second resistor are used for being conducted when any one diode is conducted, so that the controller 3 can judge fault data in data collected by the sensor when the switch is conducted;
a first resistor with a second end connected to ground.
The applicant considers that when the data processing modules 1 have different types, and the data processing modules 1 of the same type correspond to one protection trigger module 2, a plurality of protection trigger modules 2 are respectively connected with the controller 3. If the types of the data processing modules 1 are too many, the ports of the controller 3 are occupied too much, and the pin resource pressure of the controller 3 is increased.
Referring to fig. 5a, fig. 5a is a schematic structural diagram of a fourth embodiment of the present invention.
In this embodiment, a plurality of diodes 51, the anodes of which are respectively connected to the output terminals of the plurality of protection trigger modules 2 in a one-to-one correspondence, and the cathodes of which are connected to the control terminal of the switch 52, and the switch 52, the first terminal of which is connected to the first power supply, and the second terminal of which is connected to the first terminal of the first resistor and the input terminal of the controller 3, are provided. Specifically, the diode 51 is turned on when the protection trigger module 2 corresponding to the diode outputs the protection signal, if any one of the diodes is turned on, the control end of the switch 52 has current flowing through, the switch 52 is turned on, and the controller 3 determines that there is fault data in the data collected by the sensor. Therefore, only one switch 52 is connected with the controller 3, and the controller 3 can know whether fault data exist in the data acquired by the sensors, so that the pressure of pin resources of the controller 3 is reduced.
Here, the switch 52 is usually a transistor, a collector of the transistor serves as a first terminal of the switch 52, a base of the transistor serves as a control terminal of the switch 52, and an emitter of the transistor serves as a second terminal of the switch 52.
Of course, the switch 52 is not limited to a transistor, and the application is not limited thereto.
As a preferred embodiment, the method further comprises the following steps:
the diodes 51, the anodes of which are respectively connected with the output ends of the protection trigger modules 2 in a one-to-one correspondence manner, and the cathodes of which are connected with the control end of the switch 52, are used for conducting when the corresponding protection trigger modules 2 output protection signals;
the switch 52 with a first end connected to the second end of the first resistor and the input end of the controller 3, and a second end connected to ground, is used for conducting when any one of the diodes is conducted, so that the controller 3 determines fault data in data collected by the sensor when the switch 52 is conducted;
the first end is connected with a first resistor of a second power supply.
The applicant considers that when the data processing modules 1 have different types, and the data processing modules 1 of the same type correspond to one protection trigger module 2, a plurality of protection trigger modules 2 are respectively connected with the controller 3. If the types of the data processing modules 1 are too many, the ports of the controller 3 are occupied too much, and the pin resource pressure of the controller 3 is increased.
Referring to fig. 5b, fig. 5b is a schematic structural diagram of a fifth embodiment of the present invention.
In this embodiment, a plurality of diodes 51 with anodes respectively corresponding to one-to-one and connected to the output terminals of the plurality of protection trigger modules 2 and cathodes connected to the control terminal of the switch 52, and a switch 52 with a first terminal connected to the second terminal of the first resistor and the input terminal and the second terminal of the controller 3 respectively and grounded are provided. Specifically, the diode 51 is turned on when the protection trigger module 2 corresponding to the diode outputs the protection signal, if any one of the diodes is turned on, the control end of the switch 52 has current flowing through, the switch 52 is turned on, and the controller 3 determines that there is fault data in the data collected by the sensor. Therefore, only one switch 52 is connected with the controller 3, and the controller 3 can know whether the data collected by the sensor has fault data or not, so that the pin resource pressure of the controller 3 is reduced.
In addition, a plurality of current limiting resistors are usually disposed between the protection trigger module 2 and the diode 51 in a one-to-one correspondence manner, and function as a protection circuit.
As a preferred embodiment, the method further comprises the following steps:
and the warning modules are respectively arranged between the protection trigger modules 2 and the diodes 51 and used for giving out warning when the corresponding protection trigger modules 2 output protection signals.
In order to enable the controller 3 to locate the fault position, in this embodiment, a plurality of warning modules are respectively disposed between the plurality of protection trigger modules 2 and the plurality of diodes 51, and when the protection trigger module 2 corresponding to the warning module outputs the protection signal, the warning module sends a warning.
In addition, the warning module is usually an audible and visual alarm.
Of course, the warning module is not limited to the audible and visual alarm, and the specific type of the warning module is not specifically limited in this application.
As a preferred embodiment, M =1.
In order to maximally reduce the pin resource pressure of the controller 3, M is usually set to 1 in practical applications, that is, N data processing modules 1 correspond to 1 protection trigger module 2, and the protection trigger module 2 is connected to the pin of the controller 3.
Of course, the value of M is not limited to 1, and the value of M may be set according to actual circumstances, and the present application is not particularly limited thereto.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an eighth embodiment of the present invention, wherein a data processing module 1 includes a plurality of dc voltage data processing modules and a plurality of ac voltage data processing modules as an example.
As a preferred embodiment, the data processing modules 1 are of different types;
further comprising a global logic gate 62 and a fractional logic gate 61; the input end of the sub logic gate 61 is connected with the output end of the data processing module 1 of the same type, the output end of the sub logic gate 61 is connected with the input end of the main logic gate 62, the enable end of the sub logic gate 61 is connected with the controller 3, and the output end of the main logic gate 62 is connected with the input end of the protection trigger module 2;
the sub logic gate 61 is used for outputting a first level signal to the main logic gate 62 when receiving a fault signal output by any one of the data processing modules 1;
the master logic gate 62 is configured to output a second level signal to the protection trigger module 2 when receiving the first level signal output by any one of the branch logic gates 61;
the protection triggering module 2 is specifically configured to output a protection signal to the controller 3 when receiving the second level signal;
the controller 3 is further configured to determine, based on the protection signal, which type of data processing module 1 corresponds to the sensor that has the fault data in the collected data, and control the sub logic gate 61 corresponding to the sensor that has the fault data to be turned off.
In order to enable the controller 3 to cut off the faulty circuit part after locating the fault location, in this embodiment, a total logic gate 62 and a branch logic gate 61 are provided, and an enable terminal of the branch logic gate 61 is connected to the controller 3, the controller 3 determines which type of data processing module 1 corresponds to the faulty data in the collected data based on the protection signal, and controls the branch logic gate 61 corresponding to the sensor with the faulty data to be disconnected.
In a preferred embodiment, the fault signal may be a high (low) level signal, and the total logic gate 62 and the fractional logic gate 61 are combinational logic gates that only require a change in the first level signal at one of the inputs of the fractional logic gate and that ultimately result in a change in the second level signal of the total logic gate.
Taking fig. 6 as an example, when the processing data of the dc voltage data processing module 1 is in the normal operation condition, the output pin 1 of the operational amplifier U2 outputs a low level, if the processing data of other paths are in the normal operation condition, the output of the or gate 1 is a low level, and similarly, when the ac input and the processing data of other paths are in the normal operation condition, the output of the or gate a is a low level, the output signal of the or gate a is a low level, the primary side light emitting diode of the optocoupler PC1 is in the cut-off state, and the secondary side pin 5 of the optocoupler PC1 protects the trigger signal 1 to be a low level. When one path of the direct current data processing circuit module 1 has a fault, the output pin 1 of the operational amplifier U2 outputs a high level, the output of the high level is also the high level through the OR gate 1, the output of the OR gate a is also changed into the high level after the high level passes through the OR gate a, the primary side light emitting diode LED of the optical coupler PC1 is conducted at the moment, the secondary side pin 5 of the optical coupler PC1 protects the trigger signal 1 to be changed into the high level, the finally obtained trigger signal level is overturned, and therefore judgment and control are carried out by the control module through the overturning of the level. Compared with an integrated circuit built by diodes, the circuit has increased complexity to a certain extent, but the added logic gate circuit has greater flexibility, various protections can be realized through different selections of the logic gate, and meanwhile, the enabling end of the logic gate circuit further provides convenience for fault resetting.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A data acquisition feedback system, comprising:
the input ends of the N data processing modules are respectively connected with the N sensors and are used for converting data acquired by different sensors into corresponding state signals, and the state signals comprise fault signals;
the M protection trigger modules are used for outputting a protection signal to the controller when receiving the fault signal output by any one of the data processing modules corresponding to the protection trigger module; wherein N, M are positive integers and N is greater than M;
the controller is used for judging whether fault data exists in the data collected by the sensor when the protection triggering module outputs the protection signal;
the data processing modules are of different types, the data processing modules of the same type correspond to a protection triggering module, and the number of at least one type of data processing module is not less than 2;
the system further comprises:
the anodes of the diodes are respectively in one-to-one correspondence with the output ends of the protection trigger modules, and the cathodes of the diodes are respectively connected with the control end of the switch, so that the diodes are conducted when the corresponding protection trigger modules output protection signals;
the first end of the first resistor is connected with a first power supply, the second end of the first resistor is connected with a switch of the first end of the first resistor and the input end of the controller respectively, and the first resistor and the second resistor are used for being conducted when any one of the diodes is conducted, so that the controller can judge fault data in data collected by the sensor when the switch is conducted;
the second end of the first resistor is grounded.
2. The data acquisition feedback system of claim 1 wherein the types of data processing modules comprise a dc voltage data processing module, an ac voltage data processing module, a temperature data processing module, and a pressure data processing module.
3. The data acquisition feedback system as set forth in claim 1, further comprising:
the anodes of the diodes are respectively connected with the output ends of the protection trigger modules in a one-to-one correspondence manner, and the cathodes of the diodes are connected with the control end of the switch, so that the diodes are conducted when the corresponding protection trigger modules output protection signals;
the first end of the switch is respectively connected with the second end of the first resistor and the input end of the controller, and the second end of the switch is grounded, and the switch is used for being conducted when any one of the diodes is conducted, so that the controller can judge fault data in data collected by the sensor when the switch is conducted;
the first end is connected with the first resistor of the second power supply.
4. The data acquisition feedback system as set forth in any one of claims 1-3, further comprising:
and the warning modules are respectively arranged between the plurality of protection trigger modules and the plurality of diodes and used for giving out a warning when the protection trigger modules correspondingly output the protection signals.
5. The data acquisition feedback system of claim 1 wherein M =1.
6. The data acquisition feedback system of claim 5 wherein the data processing modules are of different types;
the system also comprises a total logic gate and a branch logic gate; the input end of the branch logic gate is connected with the output end of the data processing module of the same type, the output end of the branch logic gate is connected with the input end of the main logic gate, the enabling end of the branch logic gate is connected with the controller, and the output end of the main logic gate is connected with the input end of the protection triggering module;
the branch logic gate is used for outputting a first level signal to the total logic gate when receiving the fault signal output by any one of the data processing modules;
the total logic gate is used for outputting a second level signal to the protection trigger module when receiving that any one of the branch logic gates outputs the first level signal;
the protection triggering module is specifically used for outputting a protection signal to the controller when receiving the second level signal;
the controller is further used for judging which type of data processing module corresponds to fault data in the data acquired by the sensor based on the protection signal, and controlling the sub logic gate corresponding to the sensor with the fault data to be disconnected.
7. The data acquisition feedback system as claimed in claim 6, wherein the fault signal is a high or low level signal, and the total logic gate and the fractional logic gate are combinational logic gates which only require a first level signal at one of the plurality of inputs of the fractional logic gate to change and finally can cause a second level signal of the total logic gate to change.
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| KR101495336B1 (en) * | 2013-09-30 | 2015-02-24 | 주식회사 레오테크 | Wireless remote cathodic protection automatic control system with multiple operating modes setting structure and method for setting operating mode of cathodic protection automatic control apparatus |
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| CN108306254A (en) * | 2018-04-09 | 2018-07-20 | 广州金升阳科技有限公司 | A kind of isolation protective circuit and the Switching Power Supply comprising the circuit |
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