CN216979929U - Explosion-proof remote control device - Google Patents
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- CN216979929U CN216979929U CN202123395264.6U CN202123395264U CN216979929U CN 216979929 U CN216979929 U CN 216979929U CN 202123395264 U CN202123395264 U CN 202123395264U CN 216979929 U CN216979929 U CN 216979929U
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Abstract
The utility model belongs to the technical field of explosion prevention, and particularly relates to an explosion-proof remote control device, a transmitter and a receiver, wherein the explosion-proof remote control device comprises: a transmitter adapted to send control instructions; the receiver, the receiver is suitable for the control command who receives the transmitter and send to control the equipment that the receiver is connected according to control command, realized simple and convenient operation, only need alone control the transmitter alright with convenient operate equipment, practice thrift manpower, material resources, financial resources greatly.
Description
Technical Field
The utility model belongs to the technical field of explosion prevention, and particularly relates to an explosion-proof remote control device, a transmitter and a receiver.
Background
The electrical operation is a special industry, but the mine electrical industry is a special industry in the special industry, especially coal mines, and easily-combustible and explosive substances such as coal dust, gas (methane), carbon monoxide and the like appear underground.
Therefore, there is a need to design a new explosion-proof remote control device, transmitter and receiver based on the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an explosion-proof remote control device, a transmitter and a receiver so as to solve the technical problem of explosion prevention of a remote controller in a special industry operation field.
In order to solve the above technical problems, the present invention provides an explosion-proof remote control device, comprising:
a transmitter adapted to send control instructions;
the receiver is suitable for receiving the control instruction sent by the transmitter so as to control the equipment connected with the receiver according to the control instruction.
Further, the transmitter includes: the transmitting control module, and the transmitting module and the input module which are electrically connected with the transmitting control module;
the input module is suitable for sending a control instruction to the emission control module;
the transmission control module is suitable for sending a control instruction through the transmission module.
Further, the input module includes: a key instruction unit and an address input unit;
the key instruction unit and the address input unit are electrically connected with the emission control module;
the key instruction unit is electrically connected with the address input unit;
the control instruction input by the key instruction unit is sent to the emission control module after addressing and code matching through the address input unit.
Further, the receiver includes: the flame-proof device comprises a flame-proof shell, a signal processing module and a receiving module electrically connected with the signal processing module;
the signal processing module and the receiving module are arranged in the flameproof shell;
the receiving module is suitable for receiving a control instruction sent by the explosion-proof transmitter according to claim 1;
the signal processing module is suitable for controlling equipment connected with the receiver after the received signals are processed.
Further, the signal processing module includes: a LAN low noise amplifier, a MIXER MIXER and a frequency synthesis unit;
the LAN low noise amplifier and the frequency synthesis unit are both electrically connected with the receiving module;
the LAN low noise amplifier and the frequency synthesis unit are both electrically connected with the MIXER MIXER;
the LAN low-noise amplifier is suitable for amplifying the control instruction signal received by the receiving module and transmitting the amplified control instruction signal to the MIXER MIXER;
the frequency synthesis unit is suitable for synthesizing a signal of a new frequency according to a control command signal;
the MIXER is adapted to mix the received signals and to transmit the mixed signals.
Further, the signal processing module further includes: a FILTER medium-short wave FILTER and a VGA variable gain amplifier;
the FILTER medium-short wave FILTER is electrically connected with the MIXER MIXER;
the FILTER medium-short wave FILTER is electrically connected with the VGA variable gain amplifier;
the FILTER medium-short wave FILTER is suitable for frequency selection of the signal output by the MIXER MIXER;
the VGA variable gain amplifier is suitable for amplifying the signals after frequency selection.
Further, the signal processing module further includes: a DETECTOR DETECTOR, a programmable filter and an output unit;
the DETECTOR DETECTOR is electrically connected with the VGA variable gain amplifier;
the programmable filter is electrically connected with the DETECTOR DETECTOR;
the programmable filter is electrically connected with the output unit through the comparator;
the output unit is connected with an external device;
the DETECTOR DETECTOR is suitable for identifying the amplified frequency-selected signal;
the programmable filter is suitable for filtering the identified signal;
the output unit is suitable for sending the signal after the filtering processing of the programmable filter to the external equipment.
Further, the signal processing module further includes: a microcontroller;
the transmitter and the receiver both adopt intrinsic safety loop design.
In a second aspect, the utility model further provides a transmitter used in the explosion-proof remote control device, which sends a control command.
In a third aspect, the present invention further provides a receiver used in the above explosion-proof remote control apparatus, which receives a control instruction to control a device connected to the receiver according to the control instruction.
The utility model has the advantages that the emitter is suitable for sending control instructions; the receiver, the receiver is suitable for the control command that receives the transmitter and send to control the equipment that the receiver is connected according to control command, realized simple and convenient operation, only need alone control the transmitter alright with convenient operate equipment, practice thrift manpower, material resources, financial resources greatly.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic circuit diagram of the explosion-proof remote control device of the present invention;
figure 2 is a schematic diagram of the intrinsically safe circuit of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides an explosion-proof remote control apparatus, including: a transmitter (U2) adapted to send control instructions; receiver (U1), the receiver is suitable for the control command that receives the transmitter and send to control the equipment that the receiver is connected according to control command, realized simple and convenient operation, only need alone control the transmitter alright with convenient operate to equipment, practice thrift manpower, material resources, financial resources greatly, conveniently carry out intelligent robot transformation moreover, to unmanned development.
In this embodiment, the transmitter includes: a transmitting control module (U22 chip processing), a transmitting module (U21 transmitting chip, connecting antenna T2) and an input module, wherein the transmitting module is electrically connected with the transmitting control module; the input module is suitable for sending a control instruction to the emission control module; the transmitting control module is suitable for sending a control instruction through the transmitting module; the U21 transmitting chip includes a power amplifier, a monostable circuit and a phase-locked loop controlled by an internal voltage controlled oscillator and loop filtering, the monostable circuit is used to control the phase-locked loop and the power amplifier to enable the power amplifier to start quickly when in operation.
In this embodiment, the input module includes: a key instruction unit (U23 key instruction) and an address input unit (U24 address input); the key instruction unit and the address input unit are electrically connected with the emission control module; the key instruction unit is electrically connected with the address input unit; the control instruction input by the key instruction unit is sent to the emission control module after addressing and code matching through the address input unit; u23 press the key command, the emitter presses the control command.
In this embodiment, the transmitter includes: u25 battery to supply energy for each part.
In this embodiment, the receiver includes: the flame-proof device comprises a flame-proof shell, a signal processing module (U13 signal processing module) and a receiving module (U12 wireless high-frequency module) electrically connected with the signal processing module; the signal processing module and the receiving module are arranged in the flameproof shell; the receiving module is suitable for receiving a control instruction sent by the explosion-proof transmitter according to claim 1; the signal processing module is suitable for controlling equipment connected with the receiver after processing the received signal; the U12 wireless high frequency module is commonly called a tuner, the radiation of the module is extremely small, the shielding effect of the net-shaped grounding copper foil on the back of the circuit module can reduce the leakage of self oscillation and the intrusion of external interference signals, and the U12 wireless high frequency module is connected with an antenna T1.
In this embodiment, the signal processing module includes: a LAN low noise amplifier, MIXER MIXER and frequency synthesis unit (U134 frequency synthesis); the LAN low noise amplifier and the frequency synthesis unit are both electrically connected with the receiving module; the LAN low noise amplifier and the frequency synthesis unit are both electrically connected with the MIXER MIXER; the LAN low-noise amplifier is suitable for amplifying the control instruction signal received by the receiving module and transmitting the amplified control instruction signal to the MIXER MIXER; the frequency synthesis unit is suitable for synthesizing a signal of a new frequency according to a control command signal; the MIXER MIXER is suitable for mixing signals output by the LAN low noise amplifier and the frequency synthesis unit and transmitting the mixed signals; LAN low noise amplifier: the weak signal is amplified, the interference of the noise of the amplifier to the signal can be serious, the noise is reduced, and the signal-to-noise ratio of the output is improved. The level of degradation of the snr caused by an amplifier is usually expressed by the noise factor F (see amplification) or by the logarithmic noise factor FN that is 10lgf (db) for an ideal amplifier with the noise factor F1 (0 db), which has the physical meaning that the output snr is equal to the input snr. The FN of a well designed low noise amplifier can be up to 3 db or less. The noise temperature Te is also commonly used as a measure of the noise performance of the amplifier where the noise figure is low: te ═ T0 (F-1). Wherein T0 is room temperature. Here, it and the noise temperature Te are both in units of kelvin (K). The noise figure F of a multistage amplifier depends mainly on its prestage. If F1, F2, … and Fn are noise coefficients of amplifiers of each stage in sequence, a1, … and An-1 in the formula are power gains of the amplifiers of each stage in sequence. The larger the gain a1 of the pre-stage, the less the amplifier of each stage thereafter has an effect on the overall noise figure F. MIXER MIXER: multiplying a radio frequency signal received by an antenna by a signal generated by a local oscillator, wherein cos α cos β is [ cos (α + β) + cos (α - β) ]/2, α is a radio frequency signal frequency quantity, β is a local oscillator frequency quantity, and generating a sum frequency and a difference frequency. When the frequency of the mixing is equal to the intermediate frequency, the signal can be amplified by an intermediate frequency amplifier and then peak detected. The detected signal is amplified by a video amplifier and then displayed. Since the oscillation frequency of the local oscillation circuit varies with time, the frequencies received by the spectrum analyzer at different times are different. U134 frequency synthesis: by linear operation of the frequency domain, frequencies with the same stability and accuracy are generated.
In this embodiment, the signal processing module further includes: a FILTER medium-short wave FILTER and a VGA variable gain amplifier; the FILTER medium-short wave FILTER is electrically connected with the MIXER MIXER; the FILTER medium-short wave FILTER is electrically connected with the VGA variable gain amplifier; the FILTER medium-short wave FILTER is suitable for frequency selection of the signal output by the MIXER MIXER; the VGA variable gain amplifier is suitable for amplifying the frequency-selected signals; FILTER medium short wave FILTER: and frequency selection is carried out, so that specific frequency components in the signal pass through, other frequency components are greatly attenuated, and interference noise is filtered or spectrum analysis is carried out. VGA variable gain amplifier: providing excellent amplification performance for high dynamic range signal chains.
In this embodiment, the signal processing module further includes: a DETECTOR DETECTOR, a programmable filter (U132 programmable filter) and an output unit (OUT output, OUT transistor plus relay output circuit); the DETECTOR DETECTOR is electrically connected with the VGA variable gain amplifier; the programmable filter is electrically connected with the DETECTOR DETECTOR; the programmable filter is electrically connected with the output unit through the comparator; the output unit is connected with an external device; the DETECTOR DETECTOR is suitable for identifying the amplified frequency-selected signal; the programmable filter is suitable for filtering the identified signal; the output unit is suitable for sending the signal after the filtering processing of the programmable filter to the external equipment. DETECTOR Detector: identifying waves, oscillations or signal presence or changes. U132 programmable filter: and programming is adopted to realize low-pass, high-pass, band-stop and all-pass filtering processing on various signals.
In this embodiment, the signal processing module further includes: CAGC automatic gain control unit, integrator; the CAGC automatic gain control unit is electrically connected with the MIXER MIXER and the DETECTOR DETECTOR; the programmable filter is also electrically connected with the CAGC automatic gain control unit and the integrator; the integrator is electrically connected with the comparator. CAGC automatic gain control: the gain of the amplifier circuit is automatically adjusted according to the signal intensity, and the automatic control is performed.
In this embodiment, the signal processing module further includes: a microcontroller (U135 logic control M430F135 mixed signal microcontroller); the microcontroller is electrically connected with the rest part of the signal processing module and adopts a Texas Instruments (TI) MSP430F135 mixed signal microcontroller.
In this embodiment, the receiver further includes a power supply V1 for supplying power.
As shown in fig. 2, in this embodiment, both the transmitter and the receiver adopt the intrinsically safe loop design, that is, both the transmitter and the receiver adopt intrinsically safe devices, and adopt intrinsically safe explosion-proof technology.
The basic principle of the intrinsic safety explosion-proof technology is to limit various parameters of an electrical equipment circuit or take protective measures to limit spark discharge energy and heat energy of the circuit, so that electric sparks and heat effects generated under normal working and specified fault states cannot ignite explosive mixtures in the surrounding environment. The safety technology reliably limits the energy in the circuit within an allowable range under the condition that the circuit is normal or abnormal so as to ensure that the explosion of dangerous gas possibly existing around the electric equipment is not caused under the conditions of short circuit, component damage and the like of the electric equipment, thereby realizing electric explosion prevention.
The intrinsically safe electrical equipment is classified into two levels of ia and ib according to the safety degree of the intrinsically safe electrical equipment. ia rating refers to electrical devices where the circuit is not able to ignite an explosive mixture under normal operation, one or both count failures. The ib level refers to an electrical device that cannot ignite an explosive mixture when the circuit is operating properly or one count fails. The grade can be adopted according to the actual use environment;
the basic design requirements of the intrinsic safety loop are as follows: the circuit can meet the intrinsic safety explosion-proof requirement by controlling the electrical parameters of the circuit (such as reducing the parameters of energy storage elements such as inductance and capacitance) or reducing the current and voltage of the circuit; the components in the circuit need to have enough power, and the connecting lead has enough section, so that the high voltage and large current which can be generated by the circuit under various fault conditions can not damage the performance of the components, and the reliability of the circuit is ensured through the reliability of the components. This requires calculation of the corresponding electrical component parameters in the intrinsically safe circuit, i.e. calculation of the intrinsically safe circuit, to meet the requirements of the relevant safety regulations, so that the safety production is more guaranteed.
Calculating an intrinsic safety loop: the specification states that all intrinsically safe circuits should perform intrinsically safe calculations according to the specification unless the entire intrinsically safe circuit is certified. In the current project, in order to ensure the correctness of the design of the intrinsic safety loop, the risk is reduced.
This ampere of equipment: firstly, explosion-proof authentication is not required: passive components, such as resistors and simple semiconductor components, can be considered as simple devices; for energy storage active components such as capacitors and inductors, the energy storage active components can be regarded as simple equipment when design parameters of the energy storage active components can ensure the comprehensive safety of a system; for active components generating energy, such as thermocouples and photocells, when the voltage of the generated energy does not exceed 1.5V, the current does not exceed 100mA, and the power does not exceed 25mW, the electrical equipment can be regarded as simple equipment. They can be freely arranged in the intrinsically safe circuit. II, requiring explosion-proof authentication: the intrinsic safety electric equipment with the energy storage element and needing explosion-proof authentication, such as a transmitter, a proximity switch and the like.
This ampere of cable: the presence of a certain amount of distributed capacitance and distributed inductance in the connecting cable, especially at long distances or at design parameters close to the maximum values allowed by intrinsic safety, requires consideration of the distributed parameters and limits on the length of the wiring. This is because the distributed inductance and the distributed capacitance are energy storages, which are released in the form of electric sparks or thermal effects when the cable fails, which increases the risk of ignition to a different extent and affects the intrinsic safety of the system.
Maximum allowable distributed capacitance of cable: cc ═ Ck × L
Maximum allowable distributed inductance of cable: lc ═ Lk × L
In the formula, Ck is the unit length distributed capacitance of the cable; lk is the cable unit length distributed inductance; l is the actual wiring length.
Associated devices (security barrier): also known as a safety retainer. The safety interface of the intrinsic safety loop can transmit electric signals between a safety area (intrinsic safety) and a danger area (non-intrinsic safety) in two directions, and can limit the energy transfer from the danger area to the safety area caused by faults. The safety barrier generally has a Zener type and an isolation type. The safety grid is used in the design of the intrinsic safety explosion-proof system, it is a device which is installed in the safety place and contains intrinsic safety circuit and non-intrinsic safety circuit, the energy sent to the on-site intrinsic safety circuit is limited in the circuit by the current-limiting and voltage-limiting circuit, so as to prevent the dangerous energy of the non-intrinsic safety circuit from entering the intrinsic safety circuit, it is called as the associated equipment in the intrinsic safety explosion-proof system, and it is the important component of the intrinsic safety system. The intrinsic safety explosion-proof system related equipment is connected electrical equipment which is arranged in a safety place and is connected between intrinsic safety electrical equipment and non-intrinsic safety electrical equipment. Because the safety barrier is designed as an energy-limiting interface between the field device and the control room device, the safety barrier ensures that the energy delivered to the field device through it is intrinsically safe regardless of whether the control room device is in a normal or faulty state.
In this embodiment, the receiver structurally isolates the circuit from the surrounding environment with isolation means, and is capable of withstanding the explosive pressure of the explosive gas mixture inside and preventing the propagation of the explosive mixture inside to the surrounding electrical equipment enclosure. The heat generated by the circuit in normal operation and the electric spark and high temperature formed in fault state are all limited in the sealed shell to prevent the surrounding inflammable and explosive gas from igniting.
In the receiver, because of the existence of the relay and the larger capacitor, the electric spark can be caused by the electric shock of the relay, and the explosion hidden danger of the large-capacity filter capacitor is larger, so the explosion-proof measure of the explosion-proof shell of the electrical equipment which can bear the explosion pressure of the explosive gas mixture in the receiver and prevent the explosive mixture in the receiver from spreading to the periphery of the shell is adopted, namely the explosion danger which is possibly generated is separated from the outside. The explosion-proof shell is also called a pressure-resistant explosion-proof shell, which seals explosion-proof product parts capable of igniting explosive mixtures inside the shell, and the shell is particularly firm and can bear the explosion pressure of the explosive mixtures inside and prevent the explosive mixtures outside the shell from propagating and exploding. That is, the inside of the shell of the explosion-proof product is possible to explode, but the explosion-proof product cannot be transmitted to the outside of the shell, so the joint surfaces of all the components of the explosion-proof product are strictly implemented according to the standard of GBT 3836.2-2021 equipment that the part 2 of the explosive environment is protected by an explosion-proof shell "d".
The receiver and the transmitter are subjected to explosion-proof processing in the embodiment, and the device is simple in structure, clear in logic, high in reliability, strong in anti-interference capability and good in stability.
The embodiment also provides a transmitter adopted by the explosion-proof remote control device for sending the control instruction.
The embodiment further provides a receiver used in the explosion-proof remote control device, which receives the control instruction to control the equipment connected to the receiver according to the control instruction.
In summary, the present invention provides a transmitter, wherein the transmitter is adapted to send a control command; the receiver, the receiver is suitable for the control command that receives the transmitter and send to control the equipment that the receiver is connected according to control command, realized simple and convenient operation, only need alone control the transmitter alright with convenient operate equipment, practice thrift manpower, material resources, financial resources greatly.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electrical, mechanical or other form of connection.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partly contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. The processor may be one or more Central Processing Units (CPUs), and in the case of one CPU, the CPU may be a single-core CPU or a multi-core CPU. The communication interface may be a data transmission interface, a circuit or component such as a communication interface or receiver that may be configured to receive information,
in light of the foregoing description of the preferred embodiments of the present invention, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.
Claims (5)
1. An explosion-proof remote control device, comprising:
a transmitter adapted to send control instructions;
the receiver is suitable for receiving the control instruction sent by the transmitter so as to control the equipment connected with the receiver according to the control instruction;
the transmitter includes: the transmitting control module, and the transmitting module and the input module which are electrically connected with the transmitting control module;
the input module is suitable for sending a control instruction to the emission control module;
the transmitting control module is suitable for sending a control instruction through the transmitting module;
the input module includes: a key instruction unit and an address input unit;
the key instruction unit and the address input unit are electrically connected with the emission control module;
the key instruction unit is electrically connected with the address input unit;
the control instruction input by the key instruction unit is sent to the emission control module after addressing and code matching through the address input unit;
the receiver includes: the flame-proof device comprises a flame-proof shell, a signal processing module and a receiving module electrically connected with the signal processing module;
the signal processing module and the receiving module are arranged in the flameproof shell;
the receiving module is suitable for receiving a control instruction sent by the transmitter;
the signal processing module is suitable for controlling equipment connected with the receiver after the received signals are processed.
2. Explosion-proof remote control as claimed in claim 1,
the signal processing module includes: a LAN low noise amplifier, a MIXER MIXER and a frequency synthesis unit;
the LAN low noise amplifier and the frequency synthesis unit are both electrically connected with the receiving module;
the LAN low noise amplifier and the frequency synthesis unit are both electrically connected with the MIXER MIXER;
the LAN low-noise amplifier is suitable for amplifying the control instruction signal received by the receiving module and transmitting the amplified control instruction signal to the MIXER MIXER;
the frequency synthesis unit is suitable for synthesizing a signal of a new frequency according to a control command signal;
the MIXER is adapted to mix the received signals and to transmit the mixed signals.
3. Explosion-proof remote control as claimed in claim 2,
the signal processing module further comprises: a FILTER medium-short wave FILTER and a VGA variable gain amplifier;
the FILTER medium-short wave FILTER is electrically connected with the MIXER MIXER;
the FILTER medium-short wave FILTER is electrically connected with the VGA variable gain amplifier;
the FILTER medium-short wave FILTER is suitable for frequency selection of the signal output by the MIXER MIXER;
the VGA variable gain amplifier is suitable for amplifying the signals after frequency selection.
4. Explosion-proof remote control as claimed in claim 3,
the signal processing module further includes: a DETECTOR DETECTOR, a programmable filter and an output unit;
the DETECTOR DETECTOR is electrically connected with the VGA variable gain amplifier;
the programmable filter is electrically connected with the DETECTOR DETECTOR;
the programmable filter is electrically connected with the output unit through the comparator;
the output unit is connected with external equipment;
the DETECTOR DETECTOR is suitable for identifying the amplified frequency-selected signal;
the programmable filter is suitable for filtering the identified signal;
the output unit is suitable for sending the signal after the filtering processing of the programmable filter to the external equipment.
5. Explosion-proof remote control as claimed in claim 4,
the transmitter and the receiver both adopt intrinsic safety loop design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202123395264.6U CN216979929U (en) | 2021-12-30 | 2021-12-30 | Explosion-proof remote control device |
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| CN202123395264.6U CN216979929U (en) | 2021-12-30 | 2021-12-30 | Explosion-proof remote control device |
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| CN216979929U true CN216979929U (en) | 2022-07-15 |
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