CN110570629A - Emergency disposal interface device of earthquake early warning system - Google Patents
Emergency disposal interface device of earthquake early warning system Download PDFInfo
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- CN110570629A CN110570629A CN201911007762.3A CN201911007762A CN110570629A CN 110570629 A CN110570629 A CN 110570629A CN 201911007762 A CN201911007762 A CN 201911007762A CN 110570629 A CN110570629 A CN 110570629A
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- 238000012544 monitoring process Methods 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 10
- 230000005693 optoelectronics Effects 0.000 claims 2
- 238000012545 processing Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides an emergency disposal interface device of an earthquake early warning system, which mainly comprises: the first microprocessor and the second microprocessor which are mutually arranged in a master-standby mode are output to the corresponding first special relay group and the second special relay group through a bus output interface, the control coils of the first railway special relay and the second railway special relay adopt a rated voltage control mode, and the control coils of the third railway special relay and the fourth railway special relay adopt an instantaneous high-voltage control mode. The invention improves the pull-in speed of the special relay for the railway by optimizing and dynamically adjusting the working voltage of the relay control coil, effectively reduces the alarm output delay time and further overcomes the technical problem of poor real-time performance of the existing interface device.
Description
Technical Field
The invention relates to the technical field of rail transit safety, in particular to an emergency disposal interface device of an earthquake early warning system.
Background
China is located between two earthquake zones in the world, namely the Pacific earthquake zone and the Eurasian earthquake zone, is a country with a lot of earthquake disasters, and the improvement of the earthquake emergency disposal protection technical level is an effective means for preventing or reducing the damage of earthquake disasters to a rail transit transportation system.
Aiming at the current situation of high-speed railways in China, a monitoring scheme and an early warning soft technology of seismic signals are relatively mature, but in the aspect of a seismic signal processing unit for directly controlling a train running mode, a control instruction is sent to a disposal information receiving module mainly through an interface unit of a monitoring host, a special relay set for the railways is further driven to act by the disposal information receiving module, and then an alarm signal is provided for a comprehensive automation system by a relay set output node. The existing relay group module usually adopts a railway safety type electrodeless relay, such as JWXC-1700, but the real-time action is poor due to the structural limitation of a control coil.
disclosure of Invention
according to the technical problem that the real-time performance of the conventional interface device is poor, the emergency disposal interface device for the earthquake early warning system applied to the high-speed railway is provided, the pull-in speed of the relay is improved and the alarm output delay time is effectively reduced by dynamically adjusting the working voltage of a relay control coil special for the railway.
The technical means adopted by the invention are as follows:
an earthquake early warning system emergency treatment interface device mainly comprises: the first microprocessor and the second microprocessor are arranged in a master-slave mode, and respectively and synchronously receive signals sent by the earthquake early warning system monitoring host through communication interfaces and output the signals to the corresponding first special relay group and the second special relay group; the first special relay group comprises a first railway special relay and a third railway special relay, and the output end of the first microprocessor is connected with the control coils of the first railway special relay and the third railway special relay through a bus output interface; the second special relay group comprises a second railway special relay and a fourth railway special relay, and the output end of the second microprocessor is connected with the control coils of the second railway special relay and the fourth railway special relay through a bus output interface; normally closed nodes of the first and second railway special relays are connected in series with a normally open node combination part, and the normally open node combination part comprises a normally open node of a third railway special relay and a normally open node of a fourth railway special relay which are connected in parallel; normally open nodes of the first and second railway special relays are connected in parallel with a normally closed node combination part, and the normally closed node combination part comprises a normally closed node of a third railway special relay and a normally closed node of a fourth railway special relay which are connected in series; the control coils of the first railway special relay and the second railway special relay adopt a rated voltage control mode, and the control coils of the third railway special relay and the fourth railway special relay adopt an instantaneous high-voltage control mode.
Furthermore, the bus output interface comprises a bus control unit, and an over-temperature detection circuit, an overvoltage detection circuit and an over-current detection circuit which are respectively connected to input pins of the bus control unit; when the signal sent by the detection loop is within the normal threshold range, the bus control unit maintains the output control signal, otherwise, the output control signal is automatically cut off.
Further, the bus output interface further comprises a voltage regulating module, the input end of a voltage regulating chip of the voltage regulating module is connected with the output end of the bus control unit, and the output end of the voltage regulating module is connected with the control coils of the first to fourth railway special relays.
Furthermore, the first microprocessor and the second microprocessor realize signal intercommunication through a backboard bus.
Furthermore, the device also comprises a first storage module connected to the first microprocessor and a second storage module connected to the second microprocessor.
Furthermore, the device also comprises a first photoelectric isolation module connected with the input and output interfaces of the first microprocessor, and a second photoelectric isolation module connected with the input and output interfaces of the second microprocessor.
Compared with the prior art, the invention has the following advantages:
1. According to the earthquake early warning system emergency disposal interface device provided by the invention, the working voltage of the relay control coil is dynamically adjusted through optimization, the pull-in speed of the railway special relay is increased, the alarm delay time is reduced to be within 150ms from 200ms specified in technical conditions of Q/CR 633-2018 high-speed railway earthquake early warning monitoring system issued by a railway head office, and the real-time property of the system is effectively improved.
2. According to the invention, the dynamic voltage regulation module is designed to realize the voltage transformation regulation of the IO channel output control, so that the action time of the special relay for the railway is flexibly controlled.
3. According to the invention, through the redundancy structure design and the detection optimization control of over-temperature, over-voltage and over-current of the IO channel, the relay group is ensured not to malfunction caused by the fault of one microprocessor or the IO channel, and the stability of processing information receiving is effectively improved.
4. The device can effectively identify the communication fault by detecting and monitoring the communication state of the host in real time, and avoids the relay group from sending a misoperation instruction to the comprehensive automation system due to the communication fault.
5. The storage unit of the device provided by the invention respectively utilizes the dynamic storage area and the static storage area to carry out detailed processing on the initialization of the device and the communication abnormity with the monitoring host, thereby improving the stability and reliability of the system.
Based on the reason, the invention can be widely popularized in the field of rail transit earthquake early warning safety.
Drawings
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the apparatus of the present invention.
FIG. 2 is a schematic diagram of the IO channel control output of the apparatus of the present invention.
FIG. 3 is a schematic diagram of an IO channel control output voltage regulation module of the present invention.
Fig. 4 is a schematic diagram of the output of the normally open and normally closed contacts of the relay of the invention.
Fig. 5 is a flow chart of the operation of the device of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1, an emergency disposal interface device of a seismic warning system mainly includes: the first microprocessor and the second microprocessor are arranged in a master-slave mode, and respectively and synchronously receive signals sent by the earthquake early warning system monitoring host through communication interfaces and output the signals to the corresponding first special relay group and the second special relay group; the first special relay group comprises a first railway special relay and a third railway special relay, and the output end of the first microprocessor is connected with the control coils of the first railway special relay and the third railway special relay through a bus output interface; the second special relay group comprises a second railway special relay and a fourth railway special relay, and the output end of the second microprocessor is connected with the control coils of the second railway special relay and the fourth railway special relay through a bus output interface. The bus output interface comprises an over-temperature detection circuit, an overvoltage detection circuit and an over-current detection circuit; when the control loop works normally, the output control signal is maintained, otherwise, the output control signal is automatically cut off, and fig. 2 is a circuit connection diagram of the bus IO channel. According to the graph, the device utilizes the temperature detection operation and amplification device, the voltage detection operation and amplification device and the current detection operation and amplification device to respectively extract the actual temperature, the actual voltage and the actual current in real time, and once the situation of exceeding the threshold value occurs, the output signal of the device is immediately cut off, so that the stability of the device is ensured. The bus output interface further comprises a voltage regulating module, as shown in fig. 3, the input end of a voltage regulating chip of the voltage regulating module is connected with the output end of the bus control unit, and the output end of the voltage regulating module is connected with the control coils of the first to fourth railway special relays. In addition, as shown in fig. 4, the normally closed node of the first/second railway-dedicated relay is connected in series with a normally open node combination unit, and the normally open node combination unit includes a normally open node of a third railway-dedicated relay and a normally open node of a fourth railway-dedicated relay connected in parallel; and in the standby state, the normally closed node of the first/second railway special relay is in an off state, and the normally open node of the third railway special relay and the normally open node of the fourth railway special relay are in an off state. The normally open node of the first/second railway special relay is connected with the normally closed node combination part in parallel, the normally closed node combination part comprises a normally closed node of a third railway special relay and a normally closed node of a fourth railway special relay which are connected in series, the normally open node of the first/second railway special relay is in a closed state in a standby state, and the normally closed node of the third railway special relay and the normally closed node of the fourth railway special relay are in a closed state. The control coils of the first railway special relay and the second railway special relay adopt a rated voltage control mode, and the control coils of the third railway special relay and the fourth railway special relay adopt an instantaneous high-voltage control mode. Furthermore, the control coils of the first railway-specific relay and the second railway-specific relay adopt a rated voltage DC24V control mode, and the control coils of the third railway-specific relay and the fourth railway-specific relay adopt an instantaneous DC36V high-voltage control mode, so that the coil current is increased, the pull-in speed is improved, the voltage regulation principle is shown in figure 3, and the control chip is used for receiving a voltage regulation signal and carrying out regulation on the basis of a PWM dynamic voltage regulation principle so as to realize the dynamic voltage regulation of an IO control circuit and further control the pull-in speed of the relays. Specifically, the STM32 chip outputs pulse control signals with different frequencies through a GATE pin by detecting an input signal of a PA1 pin, so as to adjust the duty ratio and output variable voltage according to the voltage-regulating working principle of the transformer.
The device also comprises a first storage module connected with the first microprocessor and a second storage module connected with the second microprocessor. Specifically, the first storage module and the second storage module both comprise a static storage area and a dynamic storage area, the static storage area stores a system initialization control command, and the dynamic storage area stores a system control command in real time.
Furthermore, the device also comprises a first photoelectric isolation module connected with the input and output interfaces of the first microprocessor and a second photoelectric isolation module connected with the input and output interfaces of the second microprocessor, so as to realize physical isolation between electrical elements.
the technical solution of the present invention is further explained by the following specific application examples.
As shown in fig. 1, an emergency handling interface device of a highly reliable earthquake early warning system includes two sets of devices using a first microprocessor and a second microprocessor as cores and 4 railway-dedicated relays, where the two sets of microprocessor devices are master and slave to each other, and synchronously process a command sent by a monitoring host of the earthquake early warning system, and implement information intercommunication and logic analysis through a backplane bus, and control the working state of the railway-dedicated relays through an IO channel according to a priority principle. The earthquake early warning system emergency disposal interface device stores information processed by the microprocessor in real time through the storage unit, and ensures that the output of an I/O channel is unchanged when the device is in communication with the monitoring host computer, thereby avoiding the relay group from sending a misoperation instruction to the comprehensive automation system.
The emergency treatment interface device specifically comprises a communication interface, a photoelectric isolation module, a microprocessor, a bus output interface and a railway special relay; the communication interface is responsible for receiving a control command sent by the monitoring host; the photoelectric isolation modules positioned at the front end and the rear end of the first micro-processing unit and the second micro-processing unit realize physical isolation among electric elements and self-protection; the bus output interface is responsible for executing the output of the control action through an I/O channel; the first micro-processing unit and the second micro-processing unit analyze the command sent by the monitoring host, perform logic operation, finally transmit the command to the special railway relay set through the bus output interface, control the special railway relay set through the I/O channel and further control the comprehensive automation system; the EEPROM storage unit is used for storing the processing information of the microprocessing unit in real time, and once the communication between the device and the monitoring host is abnormal, the information is directly output to the I/O channel to control the action of the relay group according to the storage information of the storage unit; the storage unit comprises a static storage area and a dynamic storage area, wherein the static storage area is used for storing the system initialization control command, and the dynamic storage area is used for storing the system control command in real time.
In the earthquake early warning system, the monitoring host does not directly drive and control the special railway relay set, judges the earthquake grade and the authenticity based on the earthquake early warning magnitude determination method according to the data sent by the data acquisition unit, and controls the working mode of the relay set through the interface device.
The utility model provides an interface arrangement is promptly dealt with to seismic early warning system of high reliability, specifically lies in:
a. The first data acquisition unit or the second data acquisition unit acquires seismic signals and transmits the seismic signals to the corresponding first monitoring host or the second monitoring host;
b. The first monitoring host or the second monitoring host judges the earthquake grade and the authenticity based on the earthquake early warning magnitude determination method: if so, the first monitoring host or the second monitoring host outputs a control command to the corresponding emergency treatment interface device; if not, the first monitoring host or the second monitoring host does not output the control command;
c. After a first microprocessor or a second microprocessor in the emergency disposal interface device receives a control command transmitted by a corresponding monitoring host, the working mode of the special relay set for the railway is controlled through an I/O channel according to the processing result of the microprocessor;
d. An I/O channel in the emergency treatment interface device is provided with an over-temperature (OPV), an over-voltage (OVP) and an over-current (OCP) detection loop, if the control loop works normally, the control loop keeps outputting a control signal, and once the control loop is detected to have an abnormal condition, the output control signal is automatically cut off, so that the action of a special relay set for the railway is ensured not to be triggered by mistake, as shown in figure 2;
e. the 4 special railway relays in the emergency treatment interface device are connected in series and in parallel by adopting a circuit to provide an open point signal and a closed point signal for the integrated automation system, as shown in fig. 4, the output delay time of the final signal depends on the slowest one of the 4 relays in response speed, wherein the first relay and the second relay are in suction states when not alarming, the third relay and the fourth relay are in falling states when not alarming, when alarming is output, the working states of the 4 relays are reversed, the first relay and the second relay fall down, the third relay and the fourth relay are in suction, and the suction speed of the third relay and the fourth relay is considered to be slower than the falling speed of the first relay and the second relay, so that the output delay time of the final signal is influenced. And a rated voltage DC24V control mode is adopted for the first relay control coil and the second relay control coil, an instantaneous DC36V high-voltage control mode is adopted for the third relay control coil and the fourth relay control coil, and the coil current is increased. By improving the suction speed of the third relay and the fourth relay, the alarm output delay time is effectively shortened; preferably, the emergency treatment interface device is internally provided with a detection function for detecting the communication quality, the system power supply and the working state of the monitoring host, and once the communication between the device and the monitoring host is abnormal, the device outputs a control command of the previous moment stored in the dynamic storage area to the I/O channel to control the action of the relay group.
The specific workflow of the apparatus of the invention will be described below assuming that microprocessor a is the primary microprocessor and microprocessor B is the backup microprocessor, and vice versa. When the system is powered on, because the dynamic memory is empty, the content of the static memory area is directly transmitted to the dynamic memory as the initial value of the dynamic memory area; in addition, the "standby command" in fig. 5 means that the microprocessor does not execute the control command sent by the monitoring host, and does not output the control command to the I/O channel control relay group.
The specific working process is as follows:
step 1: judging whether the communication between the device and the monitoring host is abnormal, if so, directly outputting the dynamic storage information (control command output by the microprocessor at the previous moment) of the storage unit to the I/O channel to control the action of the relay group; otherwise, go to step 2.
Step 2: the main microprocessor monitors the command sent by the monitoring host computer in real time through the communication interface.
and step 3: the main microprocessor and the standby microprocessor exchange information and judge whether the standby microprocessor sends a control command according to the earthquake level.
If the standby microprocessor has sent the control command, the main microprocessor receives the standby command sent by the standby microprocessor;
If the standby host microprocessor does not send a control command, step 4 is entered.
And 4, step 4: and the main microprocessor updates the dynamic storage information of the storage unit in real time according to the earthquake level, and simultaneously sends a control command to the I/O channel to further control the action of the relay group.
The system adopts a redundancy design mechanism, the reliability of the device is greatly improved, the problem that the relay group sends a misoperation instruction to the integrated automation system when the communication between the device and the monitoring host is abnormal due to misoperation is effectively avoided, and the efficient and stable working mode of the earthquake early warning system is ensured.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An earthquake early warning system emergency treatment interface device, which is characterized in that: the first microprocessor and the second microprocessor are arranged in a master-slave mode, and respectively and synchronously receive signals sent by the earthquake early warning system monitoring host through communication interfaces and output the signals to the corresponding first special relay group and the second special relay group; the first special relay group comprises a first railway special relay and a third railway special relay, and the output end of the first microprocessor is connected with the control coils of the first railway special relay and the third railway special relay through a bus output interface; the second special relay group comprises a second railway special relay and a fourth railway special relay, and the output end of the second microprocessor is connected with the control coils of the second railway special relay and the fourth railway special relay through a bus output interface;
The normally closed nodes of the first and second railway special relays are connected in series with a normally open node combination part, and the normally open node combination part comprises a normally open node of a third railway special relay and a normally open node of a fourth railway special relay control coil which are connected in parallel; normally open nodes of the first and second railway special relays are connected in parallel with a normally closed node combination part, and the normally closed node combination part comprises a normally closed node of a third railway special relay and a normally closed node of a fourth railway special relay which are connected in series; the control coils of the first railway special relay and the second railway special relay adopt a rated voltage control mode, and the control coils of the third railway special relay and the fourth railway special relay adopt an instantaneous high-voltage control mode.
2. The earthquake early warning system emergency disposal interface device according to claim 1, wherein the bus output interface comprises a bus control unit, and an over-temperature detection circuit, an over-voltage detection circuit and an over-current detection circuit which are respectively connected to input pins of the bus control unit; when the signal sent by the detection loop is within the normal threshold range, the bus control unit maintains the output control signal, otherwise, the output control signal is automatically cut off.
3. The emergency disposal interface device of the earthquake early warning system according to claim 1, wherein the bus output interface further comprises a voltage regulating module, an input end of a voltage regulating chip of the voltage regulating module is connected with an output end of the bus control unit, and an output end of the voltage regulating module is connected with control coils of the first to fourth railway special relays.
4. The emergency handling interface device of claim 1, wherein the first microprocessor and the second microprocessor are interconnected via a backplane bus.
5. The earthquake early warning system emergency treatment interface device according to any one of claims 1 to 4, wherein the device further comprises a first memory module connected to the first microprocessor and a second memory module connected to the second microprocessor.
6. The earthquake early warning system emergency treatment interface device as recited in any one of claims 1 to 4, further comprising a first optoelectronic isolation module connected to the input and output interface of the first microprocessor, and a second optoelectronic isolation module connected to the input and output interface of the second microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911007762.3A CN110570629A (en) | 2019-10-22 | 2019-10-22 | Emergency disposal interface device of earthquake early warning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911007762.3A CN110570629A (en) | 2019-10-22 | 2019-10-22 | Emergency disposal interface device of earthquake early warning system |
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| CN110570629A true CN110570629A (en) | 2019-12-13 |
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| CN201911007762.3A Pending CN110570629A (en) | 2019-10-22 | 2019-10-22 | Emergency disposal interface device of earthquake early warning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593189A (en) * | 2021-08-06 | 2021-11-02 | 成舟 | Emergency early warning system of hydroelectric power plant |
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| CN109036960A (en) * | 2018-08-08 | 2018-12-18 | 江苏固德威电源科技股份有限公司 | A kind of relay driving control circuit |
| CN210377789U (en) * | 2019-10-22 | 2020-04-21 | 大连谷瑞特科技有限公司 | Emergency disposal interface device of earthquake early warning system |
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2019
- 2019-10-22 CN CN201911007762.3A patent/CN110570629A/en active Pending
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| CN113593189A (en) * | 2021-08-06 | 2021-11-02 | 成舟 | Emergency early warning system of hydroelectric power plant |
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