CN108594721B - Box transformer substation measurement and control device capable of automatically switching direct current input signal types - Google Patents
Box transformer substation measurement and control device capable of automatically switching direct current input signal types Download PDFInfo
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- CN108594721B CN108594721B CN201810568381.1A CN201810568381A CN108594721B CN 108594721 B CN108594721 B CN 108594721B CN 201810568381 A CN201810568381 A CN 201810568381A CN 108594721 B CN108594721 B CN 108594721B
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- 238000005259 measurement Methods 0.000 title claims abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 238000012937 correction Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21137—Analog to digital conversion, ADC, DAC
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Selective Calling Equipment (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a box transformer measurement and control device capable of automatically switching direct current input signal types, which comprises a box body, wherein one side of the front surface of the box body is hinged with a box cover, the middle part of the front surface of the box cover is provided with a display screen, one side of the front surface of the box cover is provided with a connecting lock, two sides of the box body are provided with radiating windows, a first mounting plate, a second mounting plate and a third mounting plate are arranged in the box body, a signal collector and a wireless signal transceiver are fixed at the top end of the first mounting plate, a signal switcher and a signal conditioner are fixed at the top end of the second mounting plate, and a data collector and a central processing unit are arranged at the top end of the third mounting plate.
Description
Technical Field
The invention relates to a box transformer measurement and control device, in particular to a box transformer measurement and control device capable of automatically switching direct current input signal types, and belongs to the technical field of power equipment.
Background
In order to ensure the operation reliability of the box-type transformer, the box-type transformer measurement and control device is an indispensable configuration for monitoring the operation parameters such as temperature, humidity, pressure and the like in real time. Usually, these important operation parameters are collected by a sensor, converted into a small direct current signal by a transmitter and sent to a box-type transformer measurement and control device. The types can be categorized into three categories: 4-20 mA, 0-5V and PT100. However, various engineering sites have various requirements on the access types of the direct current signals, and the existing engineering sites need to be configured with one type of access, and some engineering sites need to be configured with two or even three types of access simultaneously, so that different types of signals need different hardware circuits. However, the current box-type transformer measurement and control device cannot be flexibly switched in the configuration of the direct current input signal types, only a fixed hardware circuit can be adopted, some box-type transformer measurement and control devices are fixed to be only connected with one direct current signal, and other box-type transformer measurement and control devices are fixed to be two types, but each channel is difficult to freely configure into the required input direct current type in any engineering stage. In this respect, this brings a lot of inconveniences for engineering design, product shipment debugging, and post engineering modification or change.
Disclosure of Invention
The invention aims to provide a box transformer measurement and control device capable of automatically switching direct current input signal types, so as to solve the problems that the current box transformer measurement and control device provided in the background art cannot be flexibly switched in the configuration of the direct current input signal types, each channel is difficult to freely configure into the required input direct current type in any engineering stage, and the general box transformer measurement and control device is complex in structure and inconvenient to install and detach.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a can automatic switch-over direct current input signal type's case becomes measurement and control device, includes the box, the positive one side of box articulates there is the case lid, the positive middle part of case lid is equipped with the display screen, the positive one side of case lid is equipped with the connection lock, the both sides of box are equipped with the heat dissipation window, the inside both sides of box are equipped with three group's block groove, the box passes through the block groove from last first mounting panel, second mounting panel and the third mounting panel of having block down in proper order, one side fixed mounting on first mounting panel top has signal collector, the opposite side fixed mounting on first mounting panel top has wireless signal transceiver, one side fixed mounting on second mounting panel top has signal switcher, the opposite side fixed mounting on second mounting panel top has signal conditioner, one side fixed mounting on third mounting panel top has data acquisition unit, the inside AD chip and the FLASH chip that are equipped with of data acquisition unit, the inside bottom fixed mounting of box has the battery, signal collector with signal switcher and signal switcher, signal transceiver and wireless signal acquisition unit.
As a preferable technical scheme of the invention, a plurality of slots are formed in the top ends of the first mounting plate, the second mounting plate and the third mounting plate at equal intervals, and fixing blocks are fixedly connected to two ends of each slot through screws.
As a preferable technical scheme of the invention, the display screen, the signal collector, the wireless signal transceiver, the signal switcher, the signal conditioner, the data collector and the central processing unit are all electrically connected with the storage battery through external switches.
As a preferable technical scheme of the invention, a charging interface is arranged on one side of the bottom of the box body, and the charging interface is electrically connected with the storage battery.
As a preferable technical scheme of the invention, a signal receiving and transmitting antenna is arranged at the top end of the wireless signal transceiver, and the signal receiving and transmitting antenna is inserted through the top end of the box body.
As a preferred technical scheme of the invention, a wiring port is arranged on the back surface of the box body, and the wiring port is in telecommunication connection with the signal collector.
As a preferred technical scheme of the invention, the model of the wireless signal transceiver is 702M12-WIP67, the model of the signal switcher is HDMI-301, the model of the signal conditioner is XA90-BZ2704, the model of the data collector is HT-3600, and the model of the central processing unit is LGA1156.
Compared with the prior art, the invention has the beneficial effects that: according to the box transformer substation measurement and control device capable of automatically switching the types of the direct current input signals, the corresponding hardware circuits are automatically switched according to the types of the external direct current input signals to meet the flexibility of the device in various project applications, the customization of products is reduced, the use of designers is facilitated, the debugging work of the products in factory is simplified, and the changing or reconstruction requirements of complex engineering sites are met; through the arrangement of the internal structure, the internal instrument is convenient to mount and dismount, and convenient to maintain; through first mounting panel, second mounting panel, third mounting panel and heat dissipation window setting, make things convenient for the heat dissipation of device.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of a first mounting plate according to the present invention;
fig. 4 is a block diagram of the present invention.
In the figure: 1. a case; 2. a case cover; 3. a display screen; 4. a connection lock; 5. a heat radiation window; 6. a first mounting plate; 7. a second mounting plate; 8. a third mounting plate; 9. a signal collector; 10. a wireless signal transceiver; 11. a signal switcher; 12. a signal conditioner; 13. a data collector; 14. a central processing unit; 15. a storage battery; 16. a signal receiving and transmitting antenna; 17. slotting; 18. and a fixed block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the invention provides a box transformer measurement and control device capable of automatically switching direct current input signal types, which comprises a box body 1, wherein one side of the front surface of the box body 1 is hinged with a box cover 2, the middle of the front surface of the box cover 2 is provided with a display screen 3, one side of the front surface of the box cover 2 is provided with a connecting lock 4, two sides of the box body 1 are provided with radiating windows 5, two sides of the inside of the box body 1 are provided with three groups of clamping grooves, the box body 1 is sequentially clamped with a first mounting plate 6, a second mounting plate 7 and a third mounting plate 8 from top to bottom through the clamping grooves, one side of the top end of the first mounting plate 6 is fixedly provided with a signal collector 9, the signal collector is arranged in the box transformer measurement and control device box body 1 and is used for providing an external wiring terminal, each input channel provides three terminals, and three types of signals of 4-20 ma, 0-5 v and PT100 can be accessed, wherein the first two terminals are used when the signals of 4-20 ma and 0-5 v are accessed, and the last terminal is empty. When the PT100 three-wire heating resistor is connected, 3 terminals are used, the public end and the correction wire end are respectively connected with the two latter terminals of the channel, and the other wire is connected with the first terminal. Meanwhile, the plug-in components are internally connected with corresponding pins of the CPU by using plug-in terminals, the other side of the top end of the first mounting plate 6 is fixedly provided with a wireless signal transceiver 10, one side of the top end of the second mounting plate 7 is fixedly provided with a signal switcher 11 for switching, filtering and adjusting front-end signals to obtain signals which are stable and completely meet sampling requirements, the signal switcher 11 adopts analog switch chips with 5 groups of access capability, the switching control of each group of switches is matched with the pin level state of the central processing unit 14, and the switching of hardware circuits corresponding to each signal type can be completed. The conditioning circuit adopts a front-stage TVS surge protection and a rear two-stage filtering processing mode to obtain reliable sampling signals, a signal conditioner 12 is fixedly arranged on the other side of the top end of a second mounting plate 7, a data collector 13 is fixedly arranged on one side of the top end of a third mounting plate 8, an AD chip and a FLASH chip are arranged in the data collector 13, two AD chips which are input by 16-bit 4 channels are used and are provided with high-speed serial communication interfaces to be connected with a central processing unit 14, the two AD sampling chips are connected with the central processing unit 14 in a shared bus mode, sampling data and control commands are transmitted through a bus, meanwhile, the AD chips are required to have at least one IO pin input capacity for accessing thermal resistance broken line judging signals, the central processing unit 14 is fixedly arranged on the other side of the top end of the third mounting plate 8, a storage battery 15 is fixedly arranged at the bottom end of the inside the box body 1, the signal collector 9 is electrically connected with a signal switcher 11, the signal switcher 11 is electrically connected with the data collector 13, the display screen 3, the wireless signal transceiver 10 and the data collector 13 are electrically connected with the central processing unit 14, and the corresponding hardware is automatically switched according to the types of external direct current input signals to meet the requirements of the device in the factory design, the factory design is reduced, the complex engineering is convenient, the requirements are met, and the factory engineering is changed, and the requirements are reduced.
Preferably, a plurality of grooves 17 are formed in the top ends of the first mounting plate 6, the second mounting plate 7 and the third mounting plate 8 at equal intervals, fixing blocks 18 are fixedly connected to two ends of the grooves 17 through screws, and beneficial effects are added at the back, so that the inner instrument is convenient to mount and dismount, and maintenance is convenient.
Preferably, the display screen 3, the signal collector 9, the wireless signal transceiver 10, the signal switcher 11, the signal conditioner 12, the data collector 13 and the central processing unit 14 are all electrically connected with the storage battery 15 through external switches, so that the normal operation of all the electric appliances is ensured.
Preferably, a charging interface is arranged on one side of the bottom of the box body 1, and the charging interface is electrically connected with the storage battery 15, so that the storage battery 15 is conveniently charged.
Preferably, the top end of the wireless signal transceiver 10 is provided with a signal receiving and transmitting antenna 16, and the signal receiving and transmitting antenna 16 is inserted through the top end of the box body 1, so that signals can be conveniently transmitted to a computer client.
Preferably, the back of the box 1 is provided with a wiring port, and the wiring port is in telecommunication connection with the signal collector 9, so that the signal collector 9 can conveniently receive external direct current input signals.
Preferably, the wireless signal transceiver 10 is 702M12-WIP67, the signal switcher 11 is HDMI-301, the signal conditioner 12 is XA90-BZ2704, the data collector 13 is HT-3600, and the CPU 14 is LGA1156, so that the operation of all instruments is ensured.
When the box-type transformer substation measurement and control device is particularly used, the box-type transformer substation measurement and control device capable of automatically switching the types of direct current input signals is operated according to the following principle:
1. main logic: when the device is started, the direct current channel configuration table stored in the FLASH chip is read, and if the stored configuration table does not exist, the default configuration table in the program is used. And then updating the direct current type display of each channel in the display menu according to the channel configuration information of the configuration table, controlling 5 switches of each channel analog switch chip to carry out corresponding setting, completing the hardware circuit switching of the channel types, sequentially initializing 2 AD chip related configuration registers through the high-speed serial channels, completing the setting of the AD chips, and starting the work of the AD sampling chips. The sampled data of each channel is sequentially read in the main cycle to be subjected to extremum and average processing, and is sent to the central processing unit 14 to calculate corresponding current or voltage or temperature values. If the current disconnection state mark of the AD chip is the thermal resistance channel, the current disconnection state mark of the AD chip needs to be read. If the signal is in the disconnection state of the thermal resistance signal, the displayed temperature value is adjusted to the maximum value, and an alarm of disconnection of the thermal resistance is given, and the alarm parameter identifies the channel number of disconnection. In addition, the change of the direct current channel configuration table needs to be monitored in the main cycle, if the change exists, the AD chip is immediately stopped, and then the initialization work is performed according to the configuration table information. And completing the real-time switching of the DC channel type in the running process of the device.
2. Display and communication unit interface: providing a configuration interface docking display and communication unit for a dc channel table requires rights and password management for both local and remote operation of the dc channel type settings to prevent intentional or unintentional human vandalism. At the same time, mutual exclusion management is required for local and remote operations to prevent conflicting operations. A data display and error alert interface is provided for data display and alert viewing in both local and remote contexts.
3. Error and alarm logic: the direct current channel configuration table information is stored in the FLASH chip, belongs to important operation information of the device, and in order to prevent the direct current channel configuration table information from being covered or tampered with other data, CRC (cyclic redundancy check) inspection is needed to be added for periodic inspection. If no artificial CRC change is found, the AD chip needs to be stopped to give a serious alarm. The AD sampling chip belongs to a core working component, information such as conversion time, error marks and the like of the AD chip needs to be monitored in real time, if errors are found, the AD chip needs to be reset immediately and reinitialized for remedy, and if the errors still exist, serious alarms need to be given. The thermal resistor disconnection warning needs to be comprehensively judged for many times so as to avoid false warning, meanwhile, the thermal resistor disconnection warning device has a disconnection return function, a disconnection return prompt needs to be given after the disconnection is reconnected, and a prompt parameter is provided with a thermal resistor channel number.
4. Application logic processing: each channel may be provided with a signal out-of-limit alarm or trip function, or may be provided with a display-only function. If the signal out-of-limit alarming or tripping function is set, logic judgment processing is carried out in the real-time task, and an alarming or tripping outlet is made after the signal out-of-limit alarming or tripping function exceeds the limit value.
In the description of the present invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a can automatic switch-over direct current input signal type's case becomes measurement and control device, includes box (1), its characterized in that, positive one side of box (1) articulates there is case lid (2), positive middle part of case lid (2) is equipped with display screen (3), positive one side of case lid (2) is equipped with connecting lock (4), the both sides of box (1) are equipped with heat dissipation window (5), the inside both sides of box (1) are equipped with three sets of block grooves, box (1) are passed through block groove from top to bottom has first mounting panel (6), second mounting panel (7) and third mounting panel (8) in proper order block, one side fixed mounting on first mounting panel (6) top has signal collector (9), the three-phase alternating current power supply is arranged in a box body (1) of the box transformer substation measurement and control device and is used for providing an external wiring terminal, three terminals are provided for each input channel, three types of signals including 4-20 mA, 0-5V and PT100 are connected, wherein the first two terminals are used when the signals of 4-20 mA and 0-5V are connected, the last terminal is empty, the 3 terminals are used when the three-phase alternating current power supply is connected with PT100 three-wire heating resistors, the public terminal and the correction terminal are respectively connected with the last two terminals of the channels, the other wire is connected with the first terminal, meanwhile, the plug-in terminal is used in the plug-in module to be connected with a corresponding pin of a CPU, a wireless signal transceiver (10) is fixedly arranged on the other side of the top end of a first mounting plate (6), a signal switcher (11) is fixedly arranged on one side of the top end of a second mounting plate (7), the signal switcher (11) adopts analog switch chips with 5 groups of access capacity, the switching control of each group of switches is matched with the pin level state of the central processing unit (14) to finish the switching of a hardware circuit corresponding to each signal type, the conditioning circuit adopts a front-stage TVS surge protection and a rear two-stage filtering processing mode to obtain reliable sampling signals, the other side of the top end of the second mounting plate (7) is fixedly provided with a signal conditioner (12), one side of the top end of the third mounting plate (8) is fixedly provided with a data collector (13), the inside of the data collector (13) is provided with an AD chip and a FLASH chip, two AD chips with 16-bit 4-channel input are used and are connected with the central processing unit (14) through a high-speed serial communication interface, the sampling data and a control command are transmitted through a bus, the AD chip needs to have at least one path of input capacity for accessing pin resistance wire judgment signals, the top end (8) is fixedly provided with a data collector (13), the data collector (3) is fixedly connected with the signal collector (11), the signal collector (13) is electrically connected with the signal collector (11), and the signal collector (13) is electrically connected with the signal collector (3) The wireless signal transceiver (10) and the data collector (13) are electrically connected with the central processing unit (14).
2. The box-type substation measurement and control device capable of automatically switching types of direct-current input signals according to claim 1, wherein the box-type substation measurement and control device is characterized in that: the novel mounting plate comprises a first mounting plate (6), a second mounting plate (7) and a third mounting plate (8), wherein a plurality of grooves (17) are formed in the top end of the first mounting plate at equal intervals, and fixing blocks (18) are fixedly connected to the two ends of the grooves (17) through screws.
3. The box-type substation measurement and control device capable of automatically switching types of direct-current input signals according to claim 1, wherein the box-type substation measurement and control device is characterized in that: the display screen (3), the signal collector (9), the wireless signal transceiver (10), the signal switcher (11), the signal conditioner (12), the data collector (13) and the central processing unit (14) are electrically connected with the storage battery (15) through external switches.
4. The box-type substation measurement and control device capable of automatically switching types of direct-current input signals according to claim 1, wherein the box-type substation measurement and control device is characterized in that: one side of the bottom of the box body (1) is provided with a charging interface, and the charging interface is electrically connected with the storage battery (15).
5. The box-type substation measurement and control device capable of automatically switching types of direct-current input signals according to claim 1, wherein the box-type substation measurement and control device is characterized in that: the top end of the wireless signal transceiver (10) is provided with a signal receiving and transmitting antenna (16), and the signal receiving and transmitting antenna (16) is inserted through the top end of the box body (1).
6. The box-type substation measurement and control device capable of automatically switching types of direct-current input signals according to claim 1, wherein the box-type substation measurement and control device is characterized in that: the back of the box body (1) is provided with a wiring port which is in telecommunication connection with the signal collector (9).
7. The box-type substation measurement and control device capable of automatically switching types of direct-current input signals according to claim 1, wherein the box-type substation measurement and control device is characterized in that: the wireless signal transceiver (10) is 702M12-WIP67, the signal switcher (11) is HDMI-301, the signal conditioner (12) is XA90-BZ2704, the data collector (13) is HT-3600, and the central processing unit (14) is LGA1156.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568381.1A CN108594721B (en) | 2018-06-05 | 2018-06-05 | Box transformer substation measurement and control device capable of automatically switching direct current input signal types |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810568381.1A CN108594721B (en) | 2018-06-05 | 2018-06-05 | Box transformer substation measurement and control device capable of automatically switching direct current input signal types |
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| CN108594721A CN108594721A (en) | 2018-09-28 |
| CN108594721B true CN108594721B (en) | 2023-12-19 |
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| CN110608817A (en) * | 2019-09-23 | 2019-12-24 | 广东蓄能发电有限公司 | An adaptive Pt100 sensor interface circuit for a temperature control and measurement integrated calibrator |
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