CN113653950A - 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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- CN113653950A CN113653950A CN202110721959.4A CN202110721959A CN113653950A CN 113653950 A CN113653950 A CN 113653950A CN 202110721959 A CN202110721959 A CN 202110721959A CN 113653950 A CN113653950 A CN 113653950A
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- shell
- pipe network
- gas pipe
- frequency data
- life cycle
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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
-
- 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 intrinsically safe gas pipe network Internet of things long 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 anode of each battery is respectively connected with the anode 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 the gas pipe network. The intrinsic safety type gas pipe network Internet of things long life cycle high-frequency data acquisition terminal has the performance that intrinsic safety type equipment cannot generate flame and cause explosion, has longer service life and higher acquisition and uploading frequency, is very convenient to acquire and upload data, and has very high market popularization value.
Description
Technical Field
The invention relates to the technical field of gas data monitoring, in particular to an intrinsically safe gas pipe network Internet of things long life cycle high-frequency data acquisition terminal.
Background
The city gas pipe network is the infrastructure of the national civilian life. 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 inevitable when the intrinsically safe explosion-proof type replaces the traditional explosion-proof type. At present, although products sold on the market are marked with intrinsic safety explosion-proof certificates, the traditional sensors are used, antennas are installed on the basis of the original explosion-proof design, internal batteries and internet of things communication modules are simply modified, and the problems that the frequency of collection and uploading is too low, the life cycle of single batteries is short, multiple batteries cannot be connected in parallel, and otherwise the national standard requirements of explosion-proof products are violated exist.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides an intrinsically safe gas pipe network physical connection long life cycle high frequency data acquisition terminal, so as 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 object, the present invention provides an intrinsically safe gas pipeline network long life cycle high frequency data acquisition terminal, which comprises:
the shell is a plastic shell;
a multi-battery power supply circuit board disposed within the housing; the multi-battery power supply circuit board is provided with a plurality of batteries which are connected in parallel, and the anode of each battery is respectively connected with the anode of the corresponding diode; and
the acquisition sensor is arranged outside the shell, one end of the acquisition sensor is electrically connected with the multi-battery power supply circuit board, and the acquisition sensor is used for monitoring parameters of gas in the gas pipeline network.
Optionally, the collection sensor is an MEMS temperature and pressure integrated sensor.
Optionally, this ampere of type gas pipe net thing allies oneself with long life cycle high frequency data acquisition terminal is including a plurality of collection sensor, one of them collection sensor passes through the stationary blade and installs on the casing, remaining collection sensor passes through the cable conductor the casing with many battery power supply circuit board electricity is connected.
Optionally, the battery is connected in series with the diode to form a battery pack, and a super capacitor and a current limiting circuit are further arranged on the multi-battery power supply circuit board;
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;
and the output end of the current limiting circuit is provided with a power interface for supplying power to the intrinsically safe gas pipe network Internet of things long life cycle high-frequency data acquisition terminal.
Optionally, the battery pack, the super capacitor and the current limiting circuit are sealed by glue to form 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 a negative electrode of the battery pack is connected with the power interface through the thermistor.
Optionally, the intrinsically safe gas pipe network internet of things long life cycle high-frequency data acquisition terminal 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 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 in the shell, and a separating ring for separating the first end from the second end of the button shell is arranged on the inner surface of the button shell;
one end of the pressing block, which is inserted into the button shell, is provided with a conducting strip, the pressing block is inserted into the button shell from the first end of the button shell, the conducting strip can penetrate through the separating ring and contact the wiring terminal, and the elastic piece is positioned between the pressing block and the separating 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 conducting strip.
Optionally, an inwardly protruding flexible clamping rib is formed at the second end of the button shell, an annular rib is formed on the connecting terminal, and the connecting terminal can be squeezed 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 installed in the first through hole in the shell in a limiting mode through the matching of the end cap and the nut.
(III) advantageous effects
The invention has the beneficial effects that: the intrinsically safe gas pipe network Internet of things long 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 for power supply, and is provided with corresponding diodes respectively for each battery to realize one-way conduction, so that the parallel batteries are prevented from being charged mutually, the potential safety hazard existing in the power supply of the multiple batteries is eliminated, and the equipment meets the national standard requirements of explosion-proof products. The problem that the capacity of the battery is insufficient can be solved by the parallel power supply of the batteries, so that the service life of a product is prolonged, and the data acquisition and uploading frequency is improved.
Under the premise that the electrical circuit meets the requirement of intrinsic safety, the shell is a plastic shell, and an accommodating cavity is formed in the shell and used for accommodating the multi-battery power supply circuit board and the batteries. When the metal shell is adopted, the antenna needs to be arranged outside due to the shielding effect, but the plastic shell provided by the invention has no shielding effect, so that the problem of antenna arrangement can be solved, and the lead of the antenna is short, the transmitting power is low, and the power consumption is low. The acquisition sensor can be with pressure, flow or the temperature conversion signal transmission many battery power supply circuit board of monitoring in the gas pipeline, and many battery power supply circuit board can upload each item data to the high in the clouds to realize the data monitoring of gas site.
Moreover, the working current of the acquisition sensor used by the traditional data acquisition and uploading terminal is milliampere, while the working current of the MEMS temperature and pressure integrated sensor is microampere, so that the problem of too fast power consumption in frequent acquisition can be solved.
In addition, the invention can carry out the timed monitoring of the gas data, the high-frequency data acquisition terminal of the long life cycle of the intrinsic safety gas pipe network physical connection can send various data to the cloud end in a preset cycle, in addition, because the invention is also provided with the hard start button, an operator can press the hard start button according to the requirement, and can obtain various data in time, and because the button shell of the hard start 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 the water vapor or dust of 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 long life cycle of the intrinsic safety gas pipe network physical connection has stable working performance.
In conclusion, the intrinsically safe gas pipe network Internet of things long life cycle high-frequency data acquisition terminal has the performance that intrinsically safe equipment cannot generate flame and cause explosion, has a longer service life and higher acquisition and uploading frequency, is very convenient to acquire and upload data, and has very high market popularization value.
Drawings
FIG. 1 is an exploded schematic view of a long life cycle high frequency data acquisition terminal of an intrinsic safety type gas pipe network;
FIG. 2 is a schematic front view of a long life cycle high frequency data acquisition terminal of the intrinsic safety type gas pipe network;
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 bleed valve of the present invention;
FIG. 7 is an exploded view of the air bleed valve of FIG. 6;
fig. 8 is a circuit schematic of the multi-cell power circuit board of the present invention.
[ description of reference ]
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: mounting holes; 62: a first through hole; 63: a second through hole;
7: a hard start button; 71: a button housing; 711: a spacer ring; 712: flexible clamping edges; 713: an end cap; 72: a pressing block; 721: a conductive sheet; 73: a wiring terminal; 731: an annular ridge; 74: an elastic member; 75: a nut;
8: a gas dispersion valve; 81: a valve body; 811: connecting columns; 812: a hollow channel; 82: an end plate; 83: a gas diffusion film;
9: a fixing sheet; 91: a limiting block; 10: a flat head screw; 11: collecting a sensor; 12: a waterproof joint; 13: and (3) a cable.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. As used herein, the terms "upper", "lower", and the like are used with reference to the orientation of FIG. 2.
The invention provides an intrinsically safe gas pipe network Internet of things long life cycle high-frequency data acquisition terminal, which comprises a shell, a multi-battery power supply circuit board 5 and an acquisition sensor 11, as shown in figures 1 to 3 and 8. 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 the corresponding diode; the battery 3 is arranged in the shell and used for supplying power to the multi-battery power supply circuit board 5; the acquisition sensor 11 is arranged outside the shell, one end of the acquisition sensor 11 can penetrate through the shell and is electrically connected with the multi-battery power supply circuit board 5, and the multi-battery power supply circuit board 5 supplies power for monitoring various parameters of gas in the gas pipe network, and specifically can monitor gas pressure, flow, temperature and the like in the gas pipe network. The batteries 3 may be lithium batteries or dry batteries, the type of the diode may be SSL24A or other types meeting the requirement, and the anode of each battery 3 may be connected in series with one or more diodes.
The intrinsically safe gas pipe network Internet of things long 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 provided with corresponding diodes for each battery 3 to realize one-way conduction, so that the batteries 3 connected in parallel are prevented from being charged mutually, potential safety hazards existing in the power supply of the multiple batteries are eliminated, and equipment meets the national standard requirements of explosion-proof products. The problem of battery capacity insufficiency can be solved in the parallelly connected power supply of a plurality of batteries 3 to promote the life-span of product and improve the frequency of gathering and uploading. Moreover, the acquisition 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 end so as to realize the real-time monitoring of a plurality of gas network points.
In addition, under the precondition that the electrical circuit meets the requirement of intrinsic safety type, the shell of the invention is a plastic shell, and an accommodating cavity is formed inside the shell and is used for accommodating the multi-battery power supply circuit board 5 and the battery 3. When the metal shell is adopted, the antenna needs to be arranged outside due to the shielding effect, but the plastic shell provided by the invention has no shielding effect, so that the problem of antenna arrangement can be solved, and the lead 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 milliampere, while the acquisition sensor 11 of the invention preferably adopts an MEMS temperature and pressure integrated sensor, and the working current is microampere, so that the power consumption can be greatly reduced, and the problem of too fast power consumption in frequent acquisition can be solved. In addition, the traditional temperature and pressure sensor is separated, the sensor does not have an 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 a material cannot be corrected. Moreover, the acquisition point is far away from the receiving end, and if the acquisition point is in voltage type output, the transmission process is easily interfered; in the case of a current output, a disturbance signal is also easily superimposed on the read resistor. However, the MEMS temperature and pressure integrated sensor is provided with a CPU (central processing unit) therein, which not only automatically corrects the nonlinearity according to the simultaneously acquired temperature and pressure, but also directly digitizes the acquired result, and then moves to step I2The C serial communication bus is directly transmitted to the main control module including the multi-battery power supply circuit board 5; the accuracy of data acquisition can be greatly improved by correcting the influence of nonlinear regression through calibration every predetermined period (for example, half a year).
In a preferred embodiment, as shown in fig. 1-2, the housing includes a base 6 and a cover 2, and the housing defines an accommodating chamber therein for accommodating the multi-battery power supply circuit board 5 and the battery 3. A sealing ring 4 is 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, a nameplate 1 can be further arranged on the cover body 2 to be used for identifying various parameters of the intrinsically safe gas pipe network thing connection long life cycle high-frequency data acquisition terminal.
In a more preferred embodiment, as shown in fig. 4 and 5, the intrinsically safe gas pipe network physical connection long life cycle high frequency data acquisition terminal further comprises a hard start button 7, and the hard start button 7 is arranged on the housing and electrically connected with the multi-battery power supply circuit board 5. The gas data monitoring system can monitor gas data at regular time, can send various data to the cloud in a preset period, and is provided with the hard start button 7, so that an operator can press the hard start button 7 according to requirements, and various data can be obtained in time.
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 a cylindrical structure with two open ends and can be embedded into the first through hole 62 on the base 6, and the button shell 71 and the first through hole 62 can be in interference fit or threaded fit. A separation ring 711 for separating a first end from a second end of the button housing 71 is provided on an inner surface of the button housing 71. The pressing block 72 is inserted into the button case 71 from the first end of the button case 71 and the conductive sheet 721 can pass through the separation ring 711 and contact the terminal 73, and the elastic member 74 is located between the pressing block 72 and the separation ring 711; a first end of the terminal 73 is inserted into the button case 71 from a second end of the button case 71 and is able to contact the conductive sheet 721, and a second end of the terminal 73 is electrically connected to the multi-cell power supply circuit board 5. When the pressing block 72 is pressed, the first end of the connection terminal 73 is electrically connected to the conductive sheet 721.
The elastic element 74 may be a spring or a rubber sleeve, and the like having an elastic structure, one end of the spring may be connected to the end cap of the pressing block 72, and the other end of the spring may be connected to the separation ring 711, when the pressing block 72 is pressed down by an operator, the spring is compressed and deformed, and the conductive sheet 721 on the pressing block 72 is conducted to the two pins of the connection terminal 73, so as to implement power-on. When the force applied to the pressing block 72 is removed, the spring returns to its original state and no pressing force is applied to the separation ring 711, so that the conductive plate 721 is separated from the two leads of the connection terminal 73 to cut off the power. Due to the existence of the separation ring 711, the external environment and the internal environment can be completely separated, and water vapor or dust of the external environment is prevented from entering the shell, so that a clean and dry space is ensured in the shell, and the intrinsically safe gas pipe network Internet of things long life cycle high-frequency data acquisition terminal has stable working performance. The partition ring 711 may be preferably formed integrally 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 case 71 is provided with an end cap 713; the hard start button 7 further includes a nut 75 disposed on an outer surface of the button housing 71; the button housing 71 is captively 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 by the end cap 713 and the step of the first through hole 62, and the nut 75 can be matched with the end cap 713 to lock the button housing 71 on the housing to prevent moisture or dust from the external environment from entering the interior of the housing.
In addition, an inwardly protruding flexible clamping rib 712 is formed on the second end of the button shell 71, an annular rib 731 is formed on the terminal 73, and the terminal 73 can be squeezed into the button shell 71 and make the annular rib 731 barb on the flexible clamping rib 712, so that the terminal 73 can be conveniently mounted and dismounted, and the mounting reliability of the terminal 73 is also ensured.
As shown in fig. 6 and 7, the intrinsically safe gas pipe network long life cycle high frequency data acquisition terminal further includes a gas dissipation valve 8, where the gas dissipation valve 8 includes a valve body 81 capable of being screwed into the second through hole 63 on the base 6, an end plate 82 disposed on one end of the valve body 81, and a gas dissipation membrane 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 diffusion membrane 83 is located between the plurality of connecting posts 811, and the air diffusion membrane 83 can close or open the hollow passage 812. In the actual monitoring, the pressure data is obtained by subtracting the environmental pressure from the pressure monitored by the collecting sensor 11 (the pressure in the housing is collected in the actual monitoring), and if the pressure in the housing is greater than the environmental pressure, the obtained pressure data is lower. Inaccurate pressure data can influence the judgement to the security of gas pipe network, and this will lead to great potential safety hazard. The gas valve 8 that looses is the normally closed valve, and the membrane 83 that looses is for plugging up hollow channel 812 through the action of gravity at the normal condition, and when the inside ambient pressure of casing was greater than outside ambient pressure, the membrane 83 that looses can open hollow channel 812, make atmospheric pressure and ambient pressure balance in the casing, promptly, the valve 8 that looses can make the inside gas of long life cycle high frequency data acquisition terminal of this ampere of type gas pipe net thing release to the outside, but outside gas can't enter into inside, make pressure monitoring data more accurate. At this time, the end plate 82 limits the displacement distance of the air diffusion membrane 83 and also blocks rainwater or dust, and the plurality of connection posts 811 prevent the air diffusion membrane 83 from falling off the air diffusion 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 reliability of the electrical connection between the hard start button 7 and the multi-battery power supply circuit board 5 is not affected by the opening and closing of the air release valve 8. In addition, the hard start button 7 and the air release valve 8 can be provided with other specific structures, as long as the corresponding functions can be realized, and the invention is within the protection scope of the invention.
Referring to fig. 1 again, the high-frequency data acquisition terminal of the long life cycle of the intrinsically safe gas pipe network internet of things comprises a plurality of acquisition sensors 11, wherein one acquisition sensor 11 is installed on the base 6 through the fixing plate 9, and the rest acquisition sensors 11 penetrate through the base 6 through the cables 13 to be electrically connected with the multi-battery power supply circuit board 5. After the fixing piece 9 is clamped in the mounting hole 61, the fixing piece can be locked and mounted with the acquisition sensor 11 through a plurality of flat head screws 10. The acquisition sensor 11 installed through the fixing plate 9 has better rigidity with the shell, and the shell can be directly installed on a gas pipeline through the acquisition sensor 11 and an auxiliary structure. And the other acquisition sensors 11 connected through the cables 13, one end of the cable 13 connected with the shell can be provided with a waterproof joint 12, and the cable 13 and the shell can be reliably installed through the waterproof joint 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 is connected with the diode in series to form a battery pack, and 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, namely the anode of each battery 3 is respectively connected with the anode of the corresponding diode, and the cathode of the diode is connected with the input end of the current limiting circuit, so that the batteries 3 connected in parallel are prevented from being charged mutually, 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 supply interface (the cathode of the battery 3 is also connected to the power supply interface to form a loop) for supplying power to the intrinsically safe gas pipe network IOT long life cycle high frequency data acquisition terminal. The battery 3 can be an ER34615 battery, the super capacitor can be a super capacitor of upc1550 type and the like, the super capacitor has the advantage of fast charging and discharging, the effect of the super capacitor is that electric energy recovered during disconnection can be rapidly charged into the super capacitor so as to improve the energy recovery rate, the super capacitor preferentially discharges the electric energy to protect the battery 3 during conduction, and the damage of high-power discharge to the battery 3 is avoided. And the super capacitor is discharged preferentially at low temperature, so that the starting performance of the intrinsically safe gas pipe network Internet of things long life cycle high-frequency data acquisition terminal at low temperature is ensured, because the battery 3 needs to be preheated at low temperature, otherwise, the discharging performance is poor. The super capacitor is discharged preferentially at high temperature, and the battery 3 is prevented from further heating, so that the intrinsic safety type gas pipe network Internet of things long life cycle high-frequency data acquisition terminal can be guaranteed to work at lower temperature all the time.
In addition, because the current limiting circuit is arranged on the multi-battery power supply circuit board 5, the maximum value of the current can be limited to be 500 mA-1A, correspondingly, the working temperature of the long-life-cycle high-frequency data acquisition terminal of the intrinsic safety type gas pipe network physical connection cannot exceed 135 ℃, so that the high safety of the long-life-cycle high-frequency data acquisition terminal of the intrinsic safety type gas pipe network physical connection is ensured to be always kept at a high level. The limiting current may be a circuit including at least one current limiting chip and related additional electronic components, and the current limiting chip may be a chip of EUP511VIR1 or other types, or in other embodiments, a combination of other electronic components may be used to obtain a current limiting circuit to limit current, which is within the 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 open-circuited, the entire multi-cell power supply circuit board 5 will not function, and the power supply circuit is disconnected; but if one of the current limiting chips is short-circuited, the other current limiting chip can also carry out current limiting. Therefore, the two current-limiting chips connected in series play a role of double insurance to ensure that the current in the multi-battery power supply circuit board 5 is always below the preset current, thereby limiting the possible electric spark or heat effect energy generated by the connecting wires of the equipment to the level that the combustion flame cannot be generated.
In addition, in order to prevent moisture, dust, and harmful gas from damaging electronic components, slow down vibration, prevent external damage, stabilize parameters of electronic components, and minimize external adverse effects, it is necessary to encapsulate a power supply and the like. Specifically, the battery pack, the super capacitor and the current limiting circuit can be sealed into an integrated structure so as to safely supply power to the intrinsically safe 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 in an integrated manner is a sealing structure, can prevent dust, moisture and the like from entering, can also play a role in fixing, prevents electronic components from shaking or moving, increases the insulation strength between electrical appliances, and prevents the occurrence of the conditions of ignition, discharge, electric leakage and the like. Moreover, the heat dissipation performance of air is generally inferior to that of pouring sealant, if electronic components only rely on air to dissipate heat, the heat cannot be conducted in time, local high temperature is easily formed, and then the electronic components are possibly damaged or flames are caused, and various problems caused by heat dissipation can be reduced by adopting a glue sealing mode.
Furthermore, 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 feed back the temperature of the battery 3 in time, so that the safety risk is reduced. The type of the thermistor can be PTC: SRS150, and the like.
In conclusion, the intrinsically safe gas pipe network Internet of things long life cycle high-frequency data acquisition terminal has the performance that intrinsically safe equipment cannot generate flame and cause explosion, has a longer service life and higher acquisition and uploading frequency, is very convenient to acquire and upload data, and has very high market popularization value.
In the description of the present invention, it is to 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 relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (10)
1. The utility model provides an intrinsically safe type gas pipe network thing allies oneself with long life cycle high frequency data acquisition terminal, its characterized in that, intrinsically safe 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 anode of each battery (3) is connected with the anode of the corresponding diode; and
the gas pipeline comprises a collecting sensor (11), wherein the collecting sensor (11) is arranged outside the shell, one end of the collecting sensor (11) is electrically connected with the multi-battery power supply circuit board (5) and used for monitoring parameters of gas in the gas pipeline network.
2. The intrinsically safe gas pipe network long life cycle high frequency data acquisition terminal of claim 1, wherein the acquisition sensor (11) is an MEMS temperature and pressure integrated sensor.
3. The intrinsically safe gas pipe network and thing networking long life cycle high frequency data acquisition terminal of claim 1 or 2, characterized in that the intrinsically safe gas pipe network and thing networking long life cycle high frequency data acquisition terminal comprises a plurality of the acquisition sensors (11), wherein one of the acquisition sensors (11) is installed on the shell through a fixing plate (9), and the rest of the acquisition sensors (11) penetrate through the shell through a cable (13) and are electrically connected with the multi-battery power supply circuit board (5).
4. The terminal for acquiring the high-frequency data of the intrinsically safe gas pipe network in the long life cycle according to claim 1 or 2, wherein the battery and the diode are connected in series to form a battery pack, and the multi-battery power supply circuit board (5) is further 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;
and the output end of the current limiting circuit is provided with a power interface for supplying power to the intrinsically safe gas pipe network Internet of things long life cycle high-frequency data acquisition terminal.
5. The intrinsically safe gas pipe network long life cycle high frequency data acquisition terminal of claim 4, wherein the battery pack, the super capacitor and the current limiting circuit are sealed by glue to form an integrated structure;
and/or the current limiting circuit comprises at least two current limiting chips connected in series.
6. The terminal for collecting the high-frequency data of the intrinsically safe gas pipe network internet of things long life cycle according to claim 4, wherein a thermistor is further arranged on the multi-battery power supply circuit board (5), and the negative electrode of the battery pack is connected with the power supply interface through the thermistor.
7. The intrinsically safe gas pipe network and thing connection long life cycle high frequency data acquisition terminal as claimed in claim 1 or 2, further comprising a hard start button (7), wherein the hard start button (7) is arranged on the shell and electrically connected with the multi-battery power supply circuit board (5).
8. The terminal for acquiring the high-frequency data of the intrinsically safe gas pipe network and the long life cycle of the internet of things as claimed in claim 7, wherein the hard starting button (7) comprises a button shell (71), a connecting 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 separating ring (711) which separates a first end from a 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 shell (71) is provided with a conducting strip (721), the pressing block (72) is inserted into the button shell (71) from the first end of the button shell (71), the conducting strip (721) can penetrate through the separating ring (711) and contact the connecting terminal (73), and the elastic piece (74) is positioned between the pressing block (72) and the separating ring (711);
a first end of the wiring terminal (73) is inserted into the button shell (71) from a second end of the button shell (71) and can be contacted with the conducting strip (721), and a 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 sheet (721).
9. The terminal for acquiring the long-life-cycle high-frequency data of the intrinsically safe gas pipe network and the object connection terminal as claimed in claim 8, wherein a flexible clamping rib (712) protruding inwards is formed at the second end of the button shell (71), an annular rib (731) is formed on the connecting terminal (73), and the connecting terminal (73) can be squeezed into the button shell (71) and enables the annular rib (731) to be hooked on the flexible clamping rib (712).
10. The intrinsically safe gas pipe network long life cycle high frequency data acquisition terminal of claim 8, 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) disposed on an outer surface of the button housing (71);
the button shell (71) is limited and installed in a first through hole (62) on the shell through the matching of the end cap (713) and the nut (75).
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| 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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| 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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| CN113653950B CN113653950B (en) | 2023-05-05 |
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| CN113653950B (en) | 2023-05-05 |
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