CN113653950B - Intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal - Google Patents
Intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal Download PDFInfo
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- CN113653950B CN113653950B CN202110721959.4A CN202110721959A CN113653950B CN 113653950 B CN113653950 B CN 113653950B CN 202110721959 A CN202110721959 A CN 202110721959A CN 113653950 B CN113653950 B CN 113653950B
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- gas pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to an intrinsic safety type gas pipe network internet-of-things life cycle high-frequency data acquisition terminal which comprises a shell, a multi-battery power supply circuit board and an acquisition sensor, wherein the shell is a plastic shell, and the multi-battery power supply circuit board is arranged in the shell; the multi-battery power supply circuit board is provided with a plurality of batteries which are connected in parallel, and the positive electrode of each battery is respectively connected with the positive electrode of the corresponding diode; the acquisition sensor is arranged outside the shell, and one end of the acquisition sensor is electrically connected with the multi-battery power supply circuit board so as to be used for monitoring gas parameters in a gas pipe network. The high-frequency data acquisition terminal for the intrinsic safety type gas pipe network Internet of things life cycle has the performance of intrinsic safety type equipment that flames cannot be generated and explosion cannot be caused, has longer service life and higher acquisition and uploading frequency, is very convenient to acquire and upload data, and has high market popularization value.
Description
Technical Field
The invention relates to the technical field of gas data monitoring, in particular to an intrinsic safety type gas pipe network internet-of-things life cycle high-frequency data acquisition terminal.
Background
Urban gas pipe networks are national and civil infrastructures. With the rapid development of lithium battery technology and the wide application of the Internet of things, the data acquisition and uploading terminal of gas pressure, temperature and flow is necessary to replace the traditional explosion-proof type with intrinsic safety explosion-proof type. At present, although the products sold on the market are marked with intrinsic safety explosion proof qualification certificates, the traditional sensors are used, meanwhile, the antennas are installed on the basis of the original explosion-proof design, the internal battery and the communication module of the Internet of things are simply modified, the problems that the collection and uploading frequency is too low, the single battery life cycle is short, multiple batteries cannot be connected in parallel, and otherwise, the national standard requirements of the explosion-proof products are violated exist.
Disclosure of Invention
First, the technical problem to be solved
In view of the above-mentioned shortcomings and disadvantages of the prior art, the invention provides an intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal, which aims to solve the problems of short life cycle and too low acquisition and uploading frequency of the existing structure.
(II) technical scheme
In order to achieve the above purpose, the invention provides an intrinsic safety type gas pipe network internet-of-things life cycle high-frequency data acquisition terminal, which comprises:
the shell is a plastic shell;
the multi-battery power supply circuit board is arranged in the shell; the multi-battery power supply circuit board is provided with a plurality of batteries which are connected in parallel, and the positive electrode of each battery is respectively connected with the positive electrode of the corresponding diode; and
the acquisition sensor is arranged outside the shell, and one end of the acquisition sensor is electrically connected with the multi-battery power supply circuit board so as to be used for monitoring parameters of gas in the gas pipe network.
Optionally, the acquisition sensor is an MEMS temperature and pressure integrated sensor.
Optionally, the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network internet of things long life cycle comprises a plurality of acquisition sensors, wherein one acquisition sensor is installed on the shell through a fixing piece, and the rest acquisition sensors penetrate through the shell through cables and are electrically connected with the multi-battery power supply circuit board.
Optionally, the battery and the diode are connected in series to form a battery pack, and the multi-battery power supply circuit board is also provided with a super capacitor and a current limiting circuit;
the battery pack is connected with the super capacitor in parallel;
the common output end of the battery pack and the super capacitor is connected with the input end of the current limiting circuit;
the output end of the current limiting circuit is provided with a power interface which is used for supplying power to the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network Internet of things long life cycle.
Optionally, the battery pack, the super capacitor and the current limiting circuit are glued and sealed into an integrated structure;
and/or the current limiting circuit comprises at least two current limiting chips connected in series.
Optionally, a thermistor is further arranged on the multi-battery power supply circuit board, and the negative electrode of the battery pack is connected with the power interface through the thermistor.
Optionally, the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network internet of things long life cycle further comprises a hard start button, and the hard start button is arranged on the shell and electrically connected with the multi-battery power supply circuit board.
Optionally, the hard start button comprises a button shell, a wiring terminal, an elastic piece and a pressing block; the button shell is of a cylindrical structure with two open ends and can be embedded into the first through hole on the shell, and a separation ring for separating the first end and the second end of the button shell is arranged on the inner surface of the button shell;
the electric conduction piece is arranged at one end of the pressing block, which is inserted into the button shell, the pressing block is inserted into the button shell from the first end of the button shell, the electric conduction piece can penetrate through the separation ring and contact the wiring terminal, and the elastic piece is positioned between the pressing block and the separation ring;
the first end of the wiring terminal is inserted into the button shell from the second end of the button shell and can be contacted with the conducting strip, and the second end of the wiring terminal is electrically connected with the multi-battery power supply circuit board;
when the pressing block is pressed down, the first end of the wiring terminal is conducted with the conductive sheet.
Optionally, a flexible clamping rib protruding inwards is formed on the second end of the button shell, an annular rib is formed on the connecting terminal, and the connecting terminal can be extruded into the button shell and enable the annular rib to be barbed on the flexible clamping rib.
Optionally, the first end of the button housing is provided with an end cap; the hard start button further comprises a nut disposed on an outer surface of the button housing;
the button shell is mounted in the first through hole on the shell in a limiting mode through the matching of the end cap and the nut.
(III) beneficial effects
The beneficial effects of the invention are as follows: the intrinsic safety type gas pipe network internet-of-things life cycle high-frequency data acquisition terminal breaks through the limitation that multiple batteries cannot be connected in parallel in the prior art, adopts the parallel connection of the multiple batteries to supply power, and is respectively provided with a corresponding diode for each battery to realize unidirectional conduction, so that the parallel batteries are prevented from being mutually charged, the potential safety hazard existing in the multi-battery power supply is eliminated, and the equipment meets the national standard requirement of explosion-proof products. The problem of battery capacity deficiency can be solved in parallelly connected power supply of a plurality of batteries to promote the life-span of product and improve the frequency that data acquisition uploaded.
Under the precondition that the electric loop meets the intrinsic safety type requirement, the shell is a plastic shell, and a containing cavity is formed in the shell and is used for containing the multi-battery power supply circuit board and the battery. When the metal shell is adopted, the antenna needs to be externally arranged due to the shielding effect, and the plastic shell can solve the problem of internal antenna due to the non-shielding effect, so that the lead wire of the antenna is short, the transmitting power is low, and the power consumption is low. The acquisition sensor can convert the pressure, flow or temperature in the monitoring gas pipeline into signals and transmit the signals to the multi-battery power supply circuit board, and the multi-battery power supply circuit board can upload various data to the cloud to realize data monitoring of gas network points.
Moreover, the working current of the acquisition sensor used by the traditional data acquisition uploading terminal is in the milliamp level, and the working current of the MEMS temperature and pressure integrated sensor is in the microampere level, so that the problem that the frequent acquisition consumes too fast power can be solved.
In addition, because the invention is also provided with the hard starting button, an operator can press the hard starting button according to the requirement to obtain various data in time, and because the button shell of the hard starting button is internally provided with the separating ring which separates the first end and the second end of the button shell, the external environment and the internal environment can be completely separated, and water vapor or dust in the external environment is prevented from entering the shell, so that the clean and dry space in the shell is ensured, and the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network Internet of things life cycle has stable working performance.
In summary, the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network Internet of things long life cycle has the performance of intrinsic safety type equipment that flames cannot be generated and explosion cannot be caused, has longer service life and higher acquisition and uploading frequency, is very convenient to acquire and upload data, and has high market popularization value.
Drawings
FIG. 1 is an exploded schematic view of an intrinsic safety type gas pipe network Internet of things long life cycle high frequency data acquisition terminal of the invention;
FIG. 2 is a schematic front view of an intrinsic safety type gas pipe network Internet of things long life cycle high frequency data acquisition terminal according to the invention;
FIG. 3 is a bottom view of FIG. 2;
FIG. 4 is an enlarged cross-sectional view of the hard start button of the present invention;
FIG. 5 is an exploded view of the hard start button of FIG. 4;
FIG. 6 is an enlarged cross-sectional view of the air release valve of the present invention;
FIG. 7 is an exploded view of the diffuser valve of FIG. 6;
fig. 8 is a schematic circuit diagram of a multi-battery powered circuit board of the present invention.
[ reference numerals description ]
1: a nameplate;
2: a cover body;
3: a battery; 4: a seal ring; 5: a multi-battery power supply circuit board;
6: a base; 61: a mounting hole; 62: a first through hole; 63: a second through hole;
7: a hard start button; 71: a button housing; 711: a spacer ring; 712: a flexible clamping edge; 713: an end cap; 72: pressing the blocks; 721: a conductive sheet; 73: a connection terminal; 731: annular ribs; 74: an elastic member; 75: a nut;
8: a gas dispersing valve; 81: a valve body; 811: a connecting column; 812: a hollow passage; 82: an end plate; 83: a gas-dispersing film;
9: a fixing piece; 10: a flat head screw; 11: collecting a sensor; 12: a waterproof joint; 13: and (5) a cable line.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings. Wherein references herein to "upper", "lower", etc. are made to the orientation of fig. 2.
The invention provides an intrinsic safety type gas pipe network internet-of-things life cycle high-frequency data acquisition terminal which is shown in fig. 1 to 3 and 8 and comprises a shell, a multi-battery power supply circuit board 5 and an acquisition sensor 11. The multi-battery power supply circuit board 5 is arranged in the shell, the multi-battery power supply circuit board 5 is provided with a plurality of batteries 3 which are mutually connected in parallel, and the positive electrode of each battery 3 is respectively connected with the positive electrode of a corresponding diode; the battery 3 is arranged in the shell and is used for supplying power to the multi-battery power supply circuit board 5; the collection sensor 11 is arranged outside the shell, one end of the collection sensor 11 can penetrate through the shell to be electrically connected with the multi-battery power supply circuit board 5, and power is supplied by the multi-battery power supply circuit board 5 so as to be used for monitoring various parameters of fuel gas in the fuel gas pipe network, and particularly can monitor the pressure, flow, temperature and the like of the fuel gas in the fuel gas pipe network. The battery 3 may be a lithium battery or a dry battery, the diode may be SSL24A or other types meeting requirements, and the positive electrode of each battery 3 may be connected in series with one or more diodes.
The intrinsic safety type gas pipe network internet-of-things life cycle high-frequency data acquisition terminal breaks through the limitation that multiple batteries cannot be connected in parallel in the prior art, adopts the multiple batteries 3 to supply power in parallel, and is respectively provided with a corresponding diode for each battery 3 to realize unidirectional conduction, so that the parallel batteries 3 are prevented from being mutually charged, the potential safety hazard existing in the multi-battery power supply is eliminated, and the equipment meets the national standard requirements of explosion-proof products. The plurality of batteries 3 are connected in parallel to supply power to solve the problem of insufficient battery capacity, so that the service life of the product is prolonged, and the frequency of collection and uploading is improved. Moreover, the collecting sensor 11 can convert the pressure, flow or temperature in the monitoring gas pipeline into signals to be transmitted to the main control module comprising the multi-battery power supply circuit board 5, and the main control module is further provided with an antenna which can upload data such as pressure to the cloud so as to realize real-time monitoring of a plurality of gas network points.
In addition, on the premise that the electric circuit meets the intrinsic safety type requirement, the shell is a plastic shell, and a containing cavity is formed in the shell and is used for containing the multi-battery power supply circuit board 5 and the battery 3. When the metal shell is adopted, the antenna needs to be externally arranged due to the shielding effect, and the plastic shell can solve the problem of internal antenna due to the non-shielding effect, so that the lead wire of the antenna is short, the transmitting power is low, and the power consumption is low.
Moreover, the working current of the acquisition sensor used by the traditional data acquisition uploading terminal is milliamp level, and the acquisition sensor 11 of the invention is preferably an MEMS temperature and pressure integrated sensor, and the working current of the acquisition sensor is microampere level, so that the electric quantity consumption can be greatly reduced, and the problem of too fast frequent acquisition power consumption can be solved. In addition, the traditional temperature and pressure sensor is separated, the sensor has no intelligent adjusting function, and the influence caused by physical characteristics such as nonlinearity, incomplete regression and the like of a temperature and pressure characteristic curve of the material cannot be corrected. Moreover, the collecting point is further away from the receiving end, and if the voltage type output is adopted, the transmission process is easy to be interfered; in the case of a current output, the disturbance signal is also easily superimposed on the read resistor. However, the MEMS temperature and pressure integrated sensor is internally provided with a CPU (central processing unit), so that nonlinearity is automatically corrected according to the temperature and pressure which are simultaneously acquired, the acquired result is directly subjected to digital processing, and then the acquired result is directly transmitted to a main control module comprising a multi-battery power supply circuit board 5 through an I2C serial communication bus; the influence of nonlinear regression can be corrected through calibration every preset period (for example, half a year), so that the accuracy of data acquisition is greatly improved.
In a preferred embodiment, as shown in fig. 1-2, the housing includes a base 6 and a cover 2, with an interior of the housing forming a receiving chamber that can be used to receive a multi-cell power circuit board 5 and a battery 3. A sealing ring 4 is further arranged between the base 6 and the cover body 2 to ensure the sealing effect between the base 6 and the cover body 2. In addition, the cover body 2 can be provided with a nameplate 1 for marking various parameters of the intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal.
In a more preferred embodiment, as shown in fig. 4 and 5, the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network internet of things long life cycle further comprises a hard start button 7, wherein the hard start button 7 is arranged on the shell and is electrically connected with the multi-battery power supply circuit board 5. The invention can monitor the gas data regularly, and can send various data to the cloud end in a preset period, in addition, because the invention is also provided with the hard start button 7, an operator can press the hard start button 7 according to the requirement, and various data can be obtained in time.
Wherein the hard start button 7 includes a button housing 71, a connection terminal 73, an elastic member 74, and a pressing block 72; the button housing 71 has a tubular structure with two open ends and can be inserted into the first through hole 62 on the base 6, and the button housing 71 and the first through hole 62 may be in interference fit or screw fit. A spacer ring 711 separating the first end from the second end of the button housing 71 is provided on the inner surface of the button housing 71. The pressing block 72 is inserted into the button housing 71 from the first end of the button housing 71 and the conductive piece 721 can pass through the separation ring 711 and contact the connection terminal 73, and the elastic member 74 is located between the pressing block 72 and the separation ring 711; the first end of the connection terminal 73 is inserted into the button housing 71 from the second end of the button housing 71 and is capable of contacting the conductive sheet 721, and the second end of the connection terminal 73 is electrically connected to the multi-battery power supply circuit board 5. When the pressing block 72 is pressed, the first end of the connection terminal 73 is conducted with the conductive piece 721.
The elastic member 74 may have an elastic structure such as a spring or a rubber sleeve, one end of the spring may be connected to the end cap of the pressing block 72, and the other end may be connected to the spacer ring 711, and when the operator presses the pressing block 72, the spring is compressively deformed, and the conductive piece 721 on the pressing block 72 is electrically connected to two pins of the connection terminal 73, so that the power is supplied. When the force acting on the pressing block 72 is removed, the spring returns to its original state, and no pressing force is provided to the spacer 711, so that the conductive piece 721 is separated from the two pins of the connection terminal 73 to achieve power-off. Because the existence of the separating ring 711 can completely separate the external environment and the internal environment, water vapor or dust in the external environment is prevented from entering the shell, so that a clean and dry space is ensured in the shell, and the intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal has stable working performance. The spacer ring 711 may be preferably integrally formed with the button housing 71, or may be detachably mounted in the button housing 71.
Wherein, as shown in fig. 4, a first end of the button housing 71 is provided with an end cap 713; the hard start button 7 further includes a nut 75 provided on the outer surface of the button housing 71; the button housing 71 is mounted in the first through hole 62 in the housing by the engagement of the end cap 713 and the nut 75. When the button housing 71 is inserted into the first through hole 62, the end cap 713 is seated on the step of the first through hole 62, a sealing connection can be formed with the step of the first through hole 62 by the end cap 713, and the nut 75 can be engaged with the end cap 713 to lock the button housing 71 to the housing to prevent moisture or dust of the external environment from entering the inside of the housing.
In addition, a flexible clip rib 712 protruding inwards is formed on the second end of the button housing 71, an annular rib 731 is formed on the connection terminal 73, and the connection terminal 73 can be extruded into the button housing 71 and the annular rib 731 is barbed on the flexible clip rib 712, so that the connection terminal 73 can be conveniently mounted and dismounted, and the mounting reliability of the connection terminal 73 is ensured.
As shown in fig. 6 and 7, the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network internet of things long life cycle further comprises a gas dispersing valve 8, wherein the gas dispersing valve 8 comprises a valve body 81 which can be screwed into a second through hole 63 on the base 6, an end plate 82 arranged on one end of the valve body 81 and a gas dispersing film 83; the end plate 82 and the valve body 81 are connected by a plurality of connecting posts 811, a hollow passage 812 is formed in the valve body 81, the air-dispersing film 83 is located between the plurality of connecting posts 811, and the air-dispersing film 83 can block or open the hollow passage 812. In the actual monitoring, the pressure data is obtained by subtracting the ambient pressure from the pressure detected by the sensor 11 (the air pressure in the housing is detected in the actual monitoring), and if the air pressure in the housing is greater than the ambient pressure, the obtained pressure data is lower. Inaccurate pressure data can affect the judgment of the safety of the gas pipe network, which can lead to a large potential safety hazard. The air dispersing valve 8 is a normally closed valve, the air dispersing film 83 is used for blocking the hollow channel 812 under the action of gravity in a normal state, and when the internal ambient pressure of the shell is greater than the external ambient pressure, the air dispersing film 83 can open the hollow channel 812 to balance the air pressure in the shell with the ambient air pressure, namely, the air dispersing valve 8 can enable the internal gas of the intrinsic safety type gas pipe network internet of things life cycle high-frequency data acquisition terminal to be released to the outside, but the external gas cannot enter the inside, so that the pressure monitoring data is more accurate. At this time, the end plate 82 restricts the displacement distance of the air-dispersing film 83, and also blocks rainwater or dust, and the plurality of connecting posts 811 can prevent the air-dispersing film 83 from falling off from the air-dispersing valve 8. It should be noted that, a certain distance exists between the hard start button 7 and the air release valve 8, and the opening and closing of the air release valve 8 will not affect the reliability of the electrical connection between the hard start button 7 and the multi-battery power supply circuit board 5. In addition, the hard start button 7 and the air release valve 8 can be provided with other specific structures, so long as the corresponding functions can be realized, and the protection scope of the present invention is provided.
Referring to fig. 1 again, the high-frequency data acquisition terminal for the life cycle of the intrinsic safety type gas pipe network internet of things comprises a plurality of acquisition sensors 11, wherein one acquisition sensor 11 is installed on a base 6 through a fixing piece 9, and the rest acquisition sensors 11 penetrate through the base 6 through cables 13 and are electrically connected with a multi-battery power supply circuit board 5. After the fixing piece 9 is clamped into the mounting hole 61, the fixing piece can be locked and mounted with the collecting sensor 11 through a plurality of flat head screws 10. The collection sensor 11 installed through the fixing piece 9 has better rigidity with the shell, and the shell can be directly installed on the gas pipeline through the collection sensor 11 and the accessory structure. The other collecting sensors 11 connected through the cable 13 can be provided with waterproof joints 12 at one ends of the cable 13 connected with the shell, and reliable installation between the cable 13 and the shell is realized through the waterproof joints 12.
In a more preferred embodiment, as shown in fig. 8, the multi-battery power supply circuit board 5 is further provided with a super capacitor and a current limiting circuit; the battery 3 and the diode are connected in series to form a battery pack, and the battery pack and the super capacitor are connected in parallel; the common output end of the battery pack and the super capacitor is connected with the input end of the current limiting circuit, namely, the positive electrode of each battery 3 is respectively connected with the positive electrode of the corresponding diode, and the negative electrode of the diode is connected with the input end of the current limiting circuit, so that the parallel batteries 3 are prevented from being mutually charged, and the potential safety hazard of multi-battery power supply is eliminated. The output end of the current limiting circuit is provided with a power interface (the negative electrode of the battery 3 is also connected to the power interface to form a loop) for supplying power to the intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal. The battery 3 can be ER34615 battery, the super capacitor can be a super capacitor of the model such as up 1550, the super capacitor has the advantages of quick charge and discharge, the electric energy recovered during disconnection can be quickly charged into the super capacitor to improve the energy recovery rate, and the super capacitor can be preferably discharged to protect the battery 3 during connection, so that the damage to the battery 3 caused by high-power discharge is avoided. Moreover, the super capacitor discharges preferentially at low temperature, so that the starting performance of the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network internet-of-things life cycle at low temperature is ensured, and the battery 3 needs to be preheated at low temperature, otherwise, the discharging performance is poor. The super capacitor discharges preferentially at high temperature, so that the battery 3 is prevented from being heated further, and the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network internet of things life cycle can be ensured to work at a lower temperature all the time.
In addition, because the multi-battery power supply circuit board 5 is provided with the current limiting circuit, the maximum value of the current can be limited to 500 mA-1A, correspondingly, the working temperature of the intrinsic safety type gas pipe network internet-of-things life cycle high-frequency data acquisition terminal cannot exceed 135 ℃, so that the intrinsic safety type gas pipe network internet-of-things life cycle high-frequency data acquisition terminal is ensured to be kept to be high all the time. The limiting current may be a circuit including at least one current limiting chip and related additional electronic components, where the current limiting chip may be a chip of a type such as EUP511VIR1, or in other embodiments, a combination of other electronic components may be used to obtain a current limiting circuit to achieve current limiting, which is within the protection scope of the present invention.
It should be noted that, referring to the preferred embodiment shown in fig. 8, the current limiting circuit may include at least two current limiting chips connected in series. If one of the current limiting chips is broken, the whole multi-battery power supply circuit board 5 is not functional, and the power supply circuit is disconnected; but if one of the current limiting chips is shorted, the other current limiting chip can also perform current limiting. Thus, the two current limiting chips in series act as a double safety function to ensure that the current level in the multi-battery powered circuit board 5 is always below a predetermined current, thereby limiting the energy of the spark or thermal effect that may be generated by the connecting wires of the device to a level where a burning flame cannot be generated.
In addition, in order to prevent moisture, dust and harmful gas from damaging the electronic components, to slow down vibration, to prevent external force damage, to stabilize parameters of the electronic components, and to minimize adverse effects from the outside, it is necessary to potting the power supply and the like. Specifically, the battery pack, the super capacitor and the current limiting circuit can be glued and sealed into an integrated structure so as to be used for safely supplying power to the intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal. The multi-battery power supply circuit board 5 which is sealed into a whole by glue is of a sealing structure, so that dust, moisture and the like can be prevented from entering, the fixing effect can be achieved, the electronic components are prevented from shaking or moving, the insulation strength between electrical facilities is improved, and the conditions of ignition, discharge, electric leakage and the like are prevented. In addition, the heat dissipation performance of air is generally poorer than that of pouring sealant, if the electronic components only dissipate heat by air, the heat cannot be conducted in time, local high temperature is easy to form, the electronic components can be damaged or flame is initiated, and various problems caused by heat dissipation can be reduced by adopting a glue sealing mode.
Further, a thermistor can be further arranged on the multi-battery power supply circuit board 5, the negative electrode of the battery 3 is connected with the power interface through the thermistor, and the thermistor can detect the temperature of the battery 3 so as to timely feed back the temperature of the battery 3, so that the safety risk is reduced. Wherein, the model of thermistor can be PTC: SRS150, etc.
In summary, the high-frequency data acquisition terminal of the intrinsic safety type gas pipe network Internet of things long life cycle has the performance of intrinsic safety type equipment that flames cannot be generated and explosion cannot be caused, has longer service life and higher acquisition and uploading frequency, is very convenient to acquire and upload data, and has high market popularization value.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (7)
1. The utility model provides an intrinsic safety type gas pipe network thing allies oneself with long life cycle high frequency data acquisition terminal, its characterized in that, intrinsic safety type gas pipe network thing allies oneself with long life cycle high frequency data acquisition terminal includes:
the shell is a plastic shell;
a multi-battery power supply circuit board (5), the multi-battery power supply circuit board (5) being disposed within the housing; the multi-battery power supply circuit board (5) is provided with a plurality of batteries (3) which are connected in parallel, and the positive electrode of each battery (3) is respectively connected with the positive electrode of a corresponding diode; the battery (3) and the diode are connected in series to form a battery pack, and the multi-battery power supply circuit board (5) is also provided with a super capacitor and a current limiting circuit; the battery pack is connected with the super capacitor in parallel; the common output end of the battery pack and the super capacitor is connected with the input end of the current limiting circuit; the output end of the current limiting circuit is provided with a power interface for supplying power to the intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal;
antenna
The system comprises a plurality of acquisition sensors (11), wherein the acquisition sensors (11) are MEMS temperature and pressure integrated sensors; the acquisition sensor (11) is arranged outside the shell, and one end of the acquisition sensor (11) is electrically connected with the multi-battery power supply circuit board (5) so as to be used for monitoring parameters of fuel gas in a fuel gas pipe network; one of the collecting sensors (11) is arranged on the shell through a fixing piece (9), and the other collecting sensors (11) penetrate through the shell through a cable (13) and a waterproof connector (12) to be electrically connected with the multi-battery power supply circuit board (5).
2. The intrinsically safe gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal of claim 1, wherein the battery pack, the super capacitor and the current limiting circuit are glued together to form an integrated structure;
and/or the current limiting circuit comprises at least two current limiting chips connected in series.
3. The intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal according to claim 2, wherein a thermistor is further arranged on the multi-battery power supply circuit board (5), and a negative electrode of the battery pack is connected with the power interface through the thermistor.
4. The intrinsically safe gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal of claim 1, further comprising a hard start button (7), wherein the hard start button (7) is arranged on the shell and is electrically connected with the multi-battery power supply circuit board (5).
5. The intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal according to claim 4, wherein the hard start button (7) comprises a button shell (71), a wiring terminal (73), an elastic piece (74) and a pressing block (72); the button shell (71) is of a cylindrical structure with two open ends and can be embedded into a first through hole (62) on the shell, and a separation ring (711) for separating the first end and the second end of the button shell (71) is arranged on the inner surface of the button shell (71);
one end of the pressing block (72) inserted into the button housing (71) is provided with a conductive sheet (721), the pressing block (72) is inserted into the button housing (71) from the first end of the button housing (71) and the conductive sheet (721) can pass through the separation ring (711) and contact the connection terminal (73), and the elastic piece (74) is positioned between the pressing block (72) and the separation ring (711);
the first end of the wiring terminal (73) is inserted into the button shell (71) from the second end of the button shell (71) and can be contacted with the conductive sheet (721), and the second end of the wiring terminal (73) is electrically connected with the multi-battery power supply circuit board (5);
when the pressing block (72) is pressed, the first end of the connecting terminal (73) is conducted with the conductive piece (721).
6. The high-frequency data acquisition terminal for the intrinsic safety type gas pipe network internet of things life cycle according to claim 5, wherein a flexible clamping edge (712) protruding inwards is formed on the second end of the button shell (71), an annular edge (731) is formed on the wiring terminal (73), and the wiring terminal (73) can be extruded into the button shell (71) and enable the annular edge (731) to be barbed on the flexible clamping edge (712).
7. The intrinsically safe gas pipe network internet-of-things long life-cycle high-frequency data acquisition terminal of claim 6, wherein the first end of the button housing (71) is provided with an end cap (713); the hard start button (7) further comprises a nut (75) provided on an outer surface of the button housing (71);
the button shell (71) is mounted in the first through hole (62) on the shell in a limiting mode through the cooperation of the end cap (713) and the nut (75).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110721959.4A CN113653950B (en) | 2021-06-28 | 2021-06-28 | Intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110721959.4A CN113653950B (en) | 2021-06-28 | 2021-06-28 | Intrinsic safety type gas pipe network internet-of-things long life cycle high-frequency data acquisition terminal |
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| CN113653950A CN113653950A (en) | 2021-11-16 |
| CN113653950B true CN113653950B (en) | 2023-05-05 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201059457Y (en) * | 2007-07-02 | 2008-05-14 | 广东科信实业有限公司 | Solar energy LED flashlamps |
| CN101546662B (en) * | 2008-03-28 | 2011-03-16 | 华荣集团有限公司 | Button mandril and explosion-proof button |
| CN201339864Y (en) * | 2009-02-06 | 2009-11-04 | 王鸿麟 | LED sea light or aero obstruction light with power supplied by super capacitor and photovoltaic cell |
| CN205509559U (en) * | 2016-03-04 | 2016-08-24 | 福建星网锐捷通讯股份有限公司 | Promote battery duration's supply circuit |
| CN206179193U (en) * | 2016-08-17 | 2017-05-17 | 广州市国飞信息科技有限公司 | Concentrator |
| CN207407078U (en) * | 2017-10-25 | 2018-05-25 | 北京科力强电子有限公司 | Fuel gas pipeline leakage remote monitoring terminal |
| CN208154112U (en) * | 2018-04-27 | 2018-11-27 | 中石油昆仑燃气有限公司 | A kind of city gas pipeline network leak monitoring terminal |
| CN110264650A (en) * | 2019-07-02 | 2019-09-20 | 厦门兴联集团有限公司 | A kind of remodeling method of the compatible tradition machinery doorbell system of intelligent doorbell outdoor unit |
| CN212032348U (en) * | 2020-06-11 | 2020-11-27 | 兰州金利达电子技术有限公司 | Wireless remote fire-fighting water supply system acquisition terminal |
| CN112886692A (en) * | 2021-02-02 | 2021-06-01 | 黄国平 | Power supply system |
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