CN212646820U - Synchronous trigger device based on electromagnetic signal - Google Patents

Synchronous trigger device based on electromagnetic signal Download PDF

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CN212646820U
CN212646820U CN201821416709.XU CN201821416709U CN212646820U CN 212646820 U CN212646820 U CN 212646820U CN 201821416709 U CN201821416709 U CN 201821416709U CN 212646820 U CN212646820 U CN 212646820U
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signal
synchronous
signal output
pulse generator
output end
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韦邦建
卢江平
张�诚
石团结
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Xi'an Smart Energy Technology Co ltd
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Xi'an Smart Energy Technology Co ltd
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Abstract

The utility model discloses a synchronous trigger device based on electromagnetic signal, include: a shield case; the operational amplifier module, the power supply module, the high-speed comparator and the optical pulse generator are all arranged in the shielding shell; the signal output end of the operational amplifier module is connected with the signal receiving end of the high-speed comparator, the signal output end of the high-speed comparator is connected with the signal receiving end of the optical pulse generator, and the signal output end of the optical pulse generator is used for sending out a synchronous trigger signal; the sensitivity adjusting device comprises an adjusting knob and a sensitivity meter; the signal output end of the adjusting knob is connected with the signal receiving end of the high-speed comparator; and the signal output end of the high-speed comparator is connected with the signal receiving end of the sensitivity meter. The data acquisition device and the synchronous trigger device of the utility model can work under the strong transient electromagnetic interference environment; the synchronous trigger device can realize high-sensitivity nanosecond-level reliable synchronous triggering.

Description

Synchronous trigger device based on electromagnetic signal
Technical Field
The utility model belongs to the technical field of the electromagnetic compatibility communication, in particular to synchronous trigger device based on electromagnetic signal.
Background
With the rapid development of the power industry and the development and planning of smart power grids and extra-high voltage technologies, the voltage level of a transformer substation is continuously improved, more and more intelligent devices are arranged in the power grids, and weak current devices based on communication technologies, microelectronic detection technologies, computer control technologies and the like are more and more widely applied to the transformer substation. Electromagnetic compatibility is not only a technical problem related to electrical utilization, but also a social problem and an economic problem which are related to social security, stability, quality guarantee of living environment and the like and have important significance.
The intelligent power grid in China is defined as a strong intelligent power grid, aims to build the strong power grid which takes an extra-high voltage power grid as a backbone grid frame and is developed coordinately and stably by other power grids of various levels, can realize the optimized configuration of resources and energy sources in a larger range, can ensure safe and reliable power supply, and realizes the informatization, automation and interaction of the power grid on the basis of the strong power grid, which means the 'intelligence' of the strong intelligent power grid. The intelligent power grid has the three-transformation characteristic, and the basis is the electronic technology. This requires that the weak-current devices applied in the power system can be adapted to the requirements of the smart grid.
The electronic transformer has the advantages of high measurement precision, wide transient response range, simple insulating structure, small volume, light weight, no saturation phenomenon, capability of directly inputting output signals into interfaces of microcomputer digital metering equipment and protection equipment and the like, and is widely applied to intelligent substations as a substitute of the traditional transformer. However, in the application process, serious problems in the aspect of reliability are exposed, the most prominent problem is the adaptation problem of the field electromagnetic environment, for example, the situation that the relay protection misoperation is caused by the operation of a breaker or a disconnecting switch for many times, and the problem is more prominent in a GIS substation, which hinders the further popularization and application of the electronic transformer in a power system.
In an electric power system, electromagnetic disturbance is generated, an electronic transformer serving as detection equipment sends an error signal, and further an accident of protection misoperation is caused, even an accident that the equipment cannot be put into operation is caused in a serious condition, and an isolating switch is the most typical. The isolating switch is the most important switch equipment in the power system, plays an important role in controlling, regulating and protecting power lines and power equipment, and has shadows distributed in all corners of the power system. Since the 2000 year operation, the electronic voltage transformer of 110kV and above through the statistical state network company system has failed for many times, wherein the insulation and electromagnetic interference cause the failure rate to be the highest. Therefore, how to improve the electromagnetic compatibility of the electronic transformer will seriously affect the construction and development speed of the smart grid. Therefore, the actual transient electromagnetic environment of the transformer substation needs to be tested, analyzed and researched, so that the real electromagnetic environment applied by the electronic transformer can be mastered, and the electromagnetic compatibility test method and standard are improved.
Need gather simultaneously this transient state electromagnetic environment's diversified a plurality of parameters in the actual transient state electromagnetic environment to the transformer substation test, analysis research in-process, because simultaneous measurement's parameter is different, the sensor that detects is different, and it is different to place the position, consequently even each data acquisition equipment triggers the collection respectively based on same electromagnetism transient state harassment, the waveform data phase difference of gathering is very big, seriously influences later stage data analysis. Electromagnetic transients are characterized by high frequency, short duration and high intensity. Therefore, high requirements are provided for the trigger synchronization, the electromagnetic shock resistance, the high trigger reliability and the like of multi-parameter data acquisition, and at present, no electromagnetic signal-based synchronous trigger device which meets the requirements is available, so that an electromagnetic transient multi-parameter data acquisition synchronous trigger device is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a synchronous trigger device based on electromagnetic signal to solve the technical problem that the above-mentioned exists. The synchronous trigger device of the utility model can work under the strong transient electromagnetic interference environment; the synchronous trigger device can realize high-sensitivity nanosecond-level reliable synchronous triggering.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electromagnetic signal based synchronous triggering device, comprising: the device comprises a shielding shell, an operational amplifier module, a power supply module, a high-speed comparator, an optical pulse generator, a sensitivity adjusting device and a photoelectric converter; the operational amplifier module, the power supply module, the high-speed comparator and the optical pulse generator are all arranged in the shielding shell, and the photoelectric converter is arranged outside the shielding shell; the signal receiving end of the operational amplifier module is used for receiving external signals, the signal output end of the operational amplifier module is connected with the signal receiving end of the high-speed comparator, the signal output end of the high-speed comparator is connected with the signal receiving end of the optical pulse generator, the signal output end of the optical pulse generator is connected with the signal input end of the photoelectric converter, and the photoelectric converter is used for converting synchronous optical trigger signals sent by the optical pulse generator into electric trigger signals; the power supply module is respectively connected with the operational amplifier module and the optical pulse generator and is used for supplying power to the operational amplifier module and the optical pulse generator; the power supply module is a rechargeable power supply module; the sensitivity adjusting device comprises an adjusting knob and a sensitivity meter; the signal output end of the adjusting knob is connected with the signal receiving end of the high-speed comparator, and the adjusting knob is used for adjusting the threshold value of the high-speed comparator; and the signal output end of the high-speed comparator is connected with the signal receiving end of a sensitivity meter, and the sensitivity meter is used for displaying the set threshold value of the high-speed comparator.
Furthermore, the device also comprises a signal acquisition device; the signal acquisition end of the signal acquisition device is arranged outside the shielding shell; the signal output end of the signal acquisition device is connected with the signal receiving end of the operational amplifier module.
Furthermore, the signal acquisition device is a whip type telescopic antenna; the whip type telescopic antenna is used for detecting transient change of an electromagnetic signal and triggering the optical pulse generator to send out an optical synchronization triggering signal.
Furthermore, the operational amplifier module, the power supply module, the high-speed comparator and the optical pulse generator are integrated on the circuit board.
Further, the shielding shell is provided with an aluminum shielding layer.
Furthermore, a plurality of optical trigger signal output integrated ports are arranged on the shielding shell; the signal receiving end of each output integrated port is connected with the signal output end of the optical pulse generator; and the signal output end of the output integrated port is used for connecting an optical cable.
Further, the number of the optical trigger signal output integrated ports is 2-10.
Further, the method also comprises the following steps: a data acquisition and storage device; the signal output end of the photoelectric converter is connected with the trigger signal input end of the data acquisition and storage equipment triggered at the lower stage; the photoelectric converter and the data acquisition and storage device are both placed in the shielding tank.
Further, the number of the photoelectric converters is more than or equal to two; the synchronous signal output end of the synchronous trigger device is respectively connected with the signal receiving end of each photoelectric converter through a synchronous signal optical cable; all the synchronization signal cables have the same length.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a synchronous trigger device for electromagnetism transient state data acquisition sets up fortune module, power module, high-speed comparator and light pulse generator in shielding shell, and shielding shell has the electromagnetic shield effect, can reduce the electromagnetic impact that each module in inside received, synchronous trigger device adopt the internal battery power supply, but equipotential work, each module of protection is unlikely to damage inefficacy, realizes can working under strong transient state electromagnetic interference environment; the operational amplifier module is used for amplifying an input external signal, wherein the external signal can be a detected transient electromagnetic field signal or an externally directly input signal; a threshold is arranged in the high-speed comparator, and the amplified external signal is compared with the threshold, so that the optical pulse generator can send out a synchronous trigger signal; the high-speed comparator is fast in processing and can realize high-sensitivity nanosecond-level reliable synchronous triggering. The sensitivity adjusting device is used for setting a threshold value of the high-speed comparator, and different sensitivity adjustments of the synchronous trigger device can be realized by setting different threshold values; the threshold value of the high-speed comparator can be adjusted by turning the adjusting knob; the sensitivity table is used for displaying the value of the threshold value.
Furthermore, the signal acquisition device is used for detecting the signal change of the transient electromagnetic field and transmitting the acquired signal to the operational amplifier module.
Furthermore, the whip antenna has the characteristics of high sensitivity and good directivity; the whip-type telescopic antenna is used for detecting the change of a transient electromagnetic field and has the advantage of good directivity; in addition, the antenna has the advantages of variable extension length, wide adaptive frequency band range and high sensitivity.
Furthermore, several modules are integrated on the circuit board, so that the modules are conveniently arranged in the shielding shell and are convenient to install.
Furthermore, the output integrated port is arranged to be conveniently connected with an external synchronous signal optical cable, so that the assembly and disassembly are convenient, and the efficiency can be improved.
Furthermore, the photoelectric converter converts the optical trigger signal into the electric trigger signal, so that the photoelectric converter can be compatible with a trigger interface of a general data acquisition device, and the general type and the compatibility are improved.
Furthermore, the lengths of all the synchronous signal optical cables are the same, so that the transmission paths through which the synchronous optical trigger signals pass are equal in length, the synchronous error can be further reduced, and the synchronism and the accuracy of data acquisition are improved.
Drawings
Fig. 1 is a schematic block diagram of a synchronous triggering device based on electromagnetic signals according to the present invention;
fig. 2 is a schematic block diagram of a data acquisition device for use in a strong electromagnetic transient environment according to the present invention;
FIG. 3 is a waveform diagram collected after the synchronous triggering device of the present invention is adopted for synchronous triggering;
fig. 4 is a waveform diagram collected without a synchronous trigger device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the present invention provides a synchronous triggering device based on electromagnetic signals, including: the device comprises a shielding shell, a signal acquisition device, an operational amplifier module, a power supply module, a high-speed comparator, an optical pulse generator, a sensitivity adjusting device and a photoelectric converter.
The shield case is made of aluminum. The signal acquisition end of the signal acquisition device is arranged outside the shielding shell; the operational amplifier module, the power supply module, the high-speed comparator and the optical pulse generator are all arranged in the shielding shell, and the photoelectric converter is independently arranged outside the shielding shell; the signal receiving end of the operational amplifier module is used for receiving external signals, the signal output end of the signal acquisition device is connected with the signal receiving end of the operational amplifier module, the signal output end of the operational amplifier module is connected with the signal receiving end of the high-speed comparator, the signal output end of the high-speed comparator is connected with the signal receiving end of the optical pulse generator, and the signal output end of the optical pulse generator is used for sending out a synchronous trigger signal; the signal output end of the optical pulse generator is connected with the signal input end of the photoelectric converter, and the photoelectric converter is used for converting the synchronous optical trigger signal sent by the optical pulse generator into an electric trigger signal; the power module is respectively connected with the operational amplifier module and the optical pulse generator and is used for supplying power to the operational amplifier module and the optical pulse generator. The signal acquisition device is a whip type telescopic antenna. The sensitivity adjusting device comprises an adjusting knob and a sensitivity meter; the signal output end of the adjusting knob is connected with the signal receiving end of the high-speed comparator, and the adjusting knob is used for adjusting the threshold value of the high-speed comparator; and the signal output end of the high-speed comparator is connected with the signal receiving end of a sensitivity meter through a display driving module, and the sensitivity meter is used for displaying the set threshold value of the high-speed comparator. The shielding shell is provided with a plurality of output integrated ports; the signal receiving end of each output integrated port is connected with the signal output end of the optical pulse generator; and the signal output end of the output integrated port is used for connecting an optical cable. The operational amplifier module, the power supply module, the high-speed comparator and the optical pulse generator are integrated on the circuit board. The number of the optical trigger signal output integrated ports is 2-10. The number of the photoelectric converters is more than or equal to two; the synchronous signal output end of the synchronous trigger device is respectively connected with the signal receiving end of each photoelectric converter through a synchronous signal optical cable; all the synchronization signal cables have the same length. The utility model discloses a concrete structure does: the synchronization trigger device includes: the device comprises a shielding shell, a front panel and a rear panel, wherein a power switch, a power indicator light, a sensitivity meter display switch, an output indicator light, a sensitivity adjusting knob, a sensitivity meter and a signal input interface are arranged on the front panel. The rear panel is provided with a whip type telescopic antenna, a synchronous optical pulse signal output interface, a charging input port, a battery output port, and an internal component which comprises a power module, a battery module, an operational amplifier module, a high-speed comparison driving module, a display driving module, an optical pulse generator module and a photoelectric converter. And the photoelectric converter of the synchronous trigger device is used for converting the transmitted optical pulse trigger signal into an electric signal to trigger the data acquisition equipment to acquire data. Meanwhile, the photoelectric converter integrates the function of a remote optical fiber control switch. The output of the 5V and 12VDC power supplies may be controlled in response to remote control signals received by the optical fiber. The optical fiber signal input port of the front panel of the photoelectric converter is used for inputting the synchronous optical pulse signal transmitted by the synchronous trigger device, converting the synchronous optical pulse signal into an electric pulse signal and outputting the electric pulse signal through the electric signal output port of the front panel of the photoelectric converter to trigger the data acquisition equipment. The switch optical fiber signal input port of the front panel of the photoelectric converter is used for inputting control signals of 5V and 12VDC power switches for controlling the output of the photoelectric converter. The output 5V and 12VDC power supplies may power the data acquisition device, whereby the switching of the data acquisition device may be remotely controlled by the control fiber. Generally, a data acquisition device, a photoelectric converter and a rechargeable battery pack for supplying electric energy are placed in a shielding tank, and the data acquisition device is a main heating source, so that heat dissipation and power saving of the data acquisition device must be considered. When the data acquisition equipment is in standby, the switch of the data acquisition equipment is temporarily controlled through remote control, so that the purposes of power saving and temperature reduction are achieved. The power input 12V of the rear panel is connected to a 12V battery pack, and the power outputs 5V and 12VDC are used for supplying power to the data acquisition device.
The shielding shell of the synchronous triggering device comprises a shielding layer made of aluminum materials, has an electromagnetic shielding effect, can reduce electromagnetic impact on each module inside, and protects each module from being damaged and losing efficacy. The power switch is used for controlling the on-off of the main power supply of the synchronous trigger device, the power indicator lamp indicates the on-off of the power supply, the sensitivity meter display switch is used for displaying the on-off sensitivity meter, and after the sensitivity is adjusted, the display of the sensitivity meter is closed to achieve the effect of saving electric energy. The sensitivity adjusting knob is used for adjusting the sensitivity of the trigger signal, and the sensitivity can be displayed through the sensitivity meter. The output indicator light is used for indicating the output indication of the synchronous trigger signal and flickers once when outputting a synchronous trigger pulse signal. The signal input interface is used for externally inputting signals and can be connected with different antennae or sensors to serve as input. The whip-type telescopic antenna of the rear panel is used for detecting the change of a transient electromagnetic field, and has the characteristics of good directivity, wide adaptive frequency band range and high sensitivity, and the telescopic length is variable. The synchronous optical pulse signal output interface is used for outputting a plurality of paths of optical pulse trigger signals. The charging input port is used for connecting an external power adapter to charge the built-in battery module, and the battery output port can provide direct-current power supply for other external equipment.
The utility model discloses a synchronous trigger device's theory of operation:
the synchronous triggering principle is that the synchronous triggering device adopts an internal battery module for power supply, and can work in a transient electromagnetic environment as an independent system. The whip type telescopic antenna on the synchronous trigger device is used for detecting the change of a space transient electromagnetic field, signals can be input through other antennas or sensors connected with a signal input interface on a front panel of the synchronous trigger device, the signals are amplified and then sent to the high-speed comparison driving module, the high-speed comparison driving module is compared with a reference voltage and then controls the optical pulse generator to output synchronous optical pulse signals, and the reference voltage can be adjusted through an adjusting knob arranged on the panel to control the sensitivity of the trigger signal. The voltage drives the sensitivity meter to display sensitivity through the display driving module. The output synchronous light pulse signals are transmitted to a photoelectric converter which is arranged together with the data acquisition equipment through an optical cable to be converted into electric signals, so that the data acquisition equipment is synchronously triggered to acquire data. The utility model discloses only have the optical cable to be connected with other equipment, do not have other electrical connection. The equipotential during operation can not conduct electromagnetic interference to other equipment, influences other equipment work.
The utility model discloses a synchronous trigger device's application method for electromagnetism transient state data acquisition, based on the utility model discloses foretell synchronous trigger device, including following step:
step 1, setting a threshold value of a high-speed comparator, wherein the threshold value is a voltage value;
step 2, inputting an external voltage value to the operational amplifier module;
and 3, when the external voltage value is higher than the threshold value, sending out a synchronous trigger signal through the optical pulse generator to realize synchronous trigger.
The utility model discloses an electromagnetism transient state multi-parameter data acquisition synchronous trigger device's application method places synchronous trigger device as an independent system in strong transient state electromagnetic environment, has adjusted whip type telescopic antenna angle and length, directional electromagnetism transient state disturbance source. And connecting a corresponding number of optical cables to the synchronous optical pulse signal output interface according to the number of the synchronous signals required to be output, wherein the other end of each optical cable is connected to the input end of a photoelectric converter arranged in the shielding device of the strong transient electromagnetic field or the input end of the photoelectric converter far away from the strong transient electromagnetic field. The data acquisition equipment and the photoelectric converter are arranged at the same position, the output end of the photoelectric converter is connected to the input end of an external trigger signal of the data acquisition equipment by a coaxial cable, the power supply of the photoelectric converter and the data acquisition equipment is well connected, and the sensor is connected to the input end of an acquisition channel of the data acquisition equipment. The synchronous trigger device is connected with other equipment without any other electrical connection except an optical cable, a power switch and a sensitivity meter display switch of the synchronous trigger device are turned on, a power indicator lamp is lightened, the sensitivity meter display sensitivity is adjusted to the required sensitivity, the antenna of the synchronous trigger device can be lightly touched by fingers or gently excited nearby the antenna, the output indicator lamp is observed to flash to test the sensitivity, and the sensitivity meter display switch is turned off to turn off the sensitivity meter display after the sensitivity is adjusted. And the photoelectric converter and the power supply of the data acquisition equipment are turned on, and when the synchronous trigger device antenna detects a signal, a synchronous trigger signal can be output to trigger the data acquisition equipment to acquire data.
The utility model discloses an electromagnetism transient state data acquisition device, based on the utility model discloses foretell synchronous trigger device, include: the system comprises a synchronous trigger device, a photoelectric converter, data acquisition and storage equipment, a power supply module and a plurality of data acquisition sensors;
the synchronous signal output end of the synchronous trigger device is connected with the signal receiving end of the photoelectric converter, and the signal output end of the photoelectric converter is connected with the trigger signal input end of the data acquisition and storage equipment; the control signal output end of the data acquisition and storage device is connected with the control signal receiving end of the data acquisition sensor, and the acquired data output end of the data acquisition sensor is connected with the acquisition channel input end of the data acquisition and storage device; the power supply module is respectively connected with the photoelectric converter and the data acquisition and storage equipment and is used for supplying power to the photoelectric converter and the data acquisition and storage equipment. The number of the photoelectric converters is multiple; the synchronous signal output end of the synchronous trigger device is respectively connected with the signal receiving end of each photoelectric converter through a synchronous signal optical cable; all the synchronization signal cables have the same length. And the channels of the data acquisition and storage equipment are all provided with the same lead. The data acquisition advance is set to 100 ms.
Example (b):
referring to fig. 2, the embodiment of the present invention employs a circuit breaker to simulate disturbance source switching and 330KV voltage to simulate an actual transient electromagnetic environment, and collects 4 parameter waveform data of voltage, current, electric field and magnetic field of the transient electromagnetic environment. The synchronous trigger device outputs 2 paths of synchronous trigger optical signals. 2 sets of photoelectric converters and 2 sets of two-channel data acquisition and storage equipment. The synchronous trigger device has 5-channel optical synchronous pulse signal output. The high-speed comparison driving reference voltage in the synchronous trigger device is adjustable. 2 sets of photoelectric converters, 2 sets of two-channel data acquisition and storage equipment are placed in 2 shielding tanks and placed at different positions of a transient electromagnetic environment, and a trigger signal output end of the synchronous trigger device is connected to a photoelectric converter light pulse signal input end through an optical cable. The lengths of the 2 sections of connecting optical cables from the trigger signal output end of the synchronous trigger device to the input end of the photoelectric converter are the same, so that the transmission paths through which the synchronous optical trigger signals pass are equal in length, and the synchronous error is further reduced. Since the transient electromagnetic field needs to send a trigger signal through the synchronous trigger device to start data acquisition, the synchronous trigger signal lags behind the transient electromagnetic field, and the same lead needs to be set for each channel of the data acquisition and storage device, in this embodiment, the data acquisition lead is set to 100 ms. The shielding tank is internally provided with a power module which is a DC12V20AH lithium battery module; the operational amplifier module adopts an OPA2810 high-speed amplifier; the high-speed comparator is a TLV3502 type comparator.
It can be seen from fig. 3 and 4 that for the same electromagnetic transient disturbance signal, the electric field, voltage, current and magnetic field signals are simultaneously acquired by 4 data acquisition devices, fig. 4 shows that the start times of the waveforms which are not synchronously triggered by the synchronous trigger device are different, and the start time of the waveform of the data acquisition device 4 lags behind the start time of the data acquisition device 1 by about 0.6 μ s. In the data waveforms acquired after synchronous triggering by the synchronous triggering device in fig. 3, the start times of the waveforms are better overlapped.

Claims (3)

1. A synchronous triggering mechanism based on electromagnetic signals, comprising: the device comprises a shielding shell, an operational amplifier module, a power supply module, a high-speed comparator, an optical pulse generator, a sensitivity adjusting device and a photoelectric converter;
the operational amplifier module, the power supply module, the high-speed comparator and the optical pulse generator are all arranged in the shielding shell, and the photoelectric converter is arranged outside the shielding shell;
the signal receiving end of the operational amplifier module is used for receiving external signals, the signal output end of the operational amplifier module is connected with the signal receiving end of the high-speed comparator, the signal output end of the high-speed comparator is connected with the signal receiving end of the optical pulse generator, the signal output end of the optical pulse generator is connected with the signal input end of the photoelectric converter, and the photoelectric converter is used for converting synchronous optical trigger signals sent by the optical pulse generator into electric trigger signals;
the power supply module is respectively connected with the operational amplifier module and the optical pulse generator and is used for supplying power to the operational amplifier module and the optical pulse generator; the power supply module is a rechargeable power supply module;
the sensitivity adjusting device comprises an adjusting knob and a sensitivity meter; the signal output end of the adjusting knob is connected with the signal receiving end of the high-speed comparator, and the adjusting knob is used for adjusting the threshold value of the high-speed comparator; the signal output end of the high-speed comparator is connected with the signal receiving end of a sensitivity meter, and the sensitivity meter is used for displaying the set threshold value of the high-speed comparator;
the device also comprises a signal acquisition device; the signal acquisition end of the signal acquisition device is arranged outside the shielding shell; the signal output end of the signal acquisition device is connected with the signal receiving end of the operational amplifier module;
the shielding shell is provided with an aluminum shielding layer;
wherein the power supply module is a DC12V20AH lithium battery module;
the operational amplifier module adopts an OPA2810 high-speed amplifier;
the high-speed comparator is a TLV3502 type comparator;
further comprising: a data acquisition and storage device; the signal output end of the photoelectric converter is connected with the trigger signal input end of the data acquisition and storage equipment triggered at the lower stage; the photoelectric converter and the data acquisition and storage equipment are both arranged in the shielding tank;
the signal acquisition device is a whip type telescopic antenna; the whip type telescopic antenna is used for detecting transient change of an electromagnetic signal and triggering the optical pulse generator to send out an optical synchronization triggering signal;
the operational amplifier module, the power supply module, the high-speed comparator and the optical pulse generator are integrated on the circuit board;
a plurality of optical trigger signal output integrated ports are arranged on the shielding shell;
the signal receiving end of each output integrated port is connected with the signal output end of the optical pulse generator; and the signal output end of the output integrated port is used for connecting an optical cable.
2. The synchronous trigger device based on the electromagnetic signal as claimed in claim 1, wherein the number of the optical trigger signal output integrated ports is 2-10.
3. The synchronous trigger device based on the electromagnetic signal of claim 1 or 2, characterized in that the number of the photoelectric converters is more than or equal to two; the synchronous signal output end of the synchronous trigger device is respectively connected with the signal receiving end of each photoelectric converter through a synchronous signal optical cable;
all the synchronization signal cables have the same length.
CN201821416709.XU 2018-08-30 2018-08-30 Synchronous trigger device based on electromagnetic signal Active CN212646820U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821416709.XU CN212646820U (en) 2018-08-30 2018-08-30 Synchronous trigger device based on electromagnetic signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821416709.XU CN212646820U (en) 2018-08-30 2018-08-30 Synchronous trigger device based on electromagnetic signal

Publications (1)

Publication Number Publication Date
CN212646820U true CN212646820U (en) 2021-03-02

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Country Status (1)

Country Link
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