TWI729915B - Gas induction device and gas bucket distribution system with the gas induction device - Google Patents

Abstract

A gas sensing device and a gas bucket distribution system, comprising a gas regulator having a gas tube body, the gas tube body is provided with a pressure sensing end; the pressure sensor is used to sense the gas pressure data in the gas tube body and generate a pressure value, A temperature sensor is used to sense the ambient temperature and generate a temperature value; a communication module has a storage unit and a transmission unit, the storage unit is used to store a user contact data; a processor, built-in temperature value, The plural of the pressure value is sent to the preset value, the processor receives the pressure value, the temperature value first determines whether the temperature value reaches one of the preset values of the temperature value, and then judges whether the pressure value is lower than the pressure of the preset value If the judgment is yes, a gas replacement signal is generated, and the gas replacement signal is sent to an external device.

Description

Gas induction device and gas bucket distribution system with the gas induction device

The present invention relates to a gas sensing device, especially a gas sensing device which is installed in a gas bucket and can remind the user of the residual amount of gas in the gas bucket.

This application claims the priority of Taiwan application Nos. 108137318 and 108213636, which were filed at the same time on October 16, 2019. All of the above-mentioned patent applications are incorporated herein by reference and become a part of this specification.

Gas barrels, which themselves are made of steel, can bear a relatively large vapor pressure. They are generally used to fill LPG fuel. They are widely used in restaurants, snack bars, or ordinary homes that are not connected to natural gas pipelines. In order to let the user know the gas inventory in the gas barrel, the gas barrel is usually equipped with a pressure gauge to detect the gas pressure in the gas barrel, so that the user can learn the residual amount of gas in the gas barrel through the pressure gauge.

However, if the user does not have the habit of checking the pressure gauge at any time, it is often impossible to detect that the gas is about to be exhausted in time. It is only when the gas stove or heater is not properly ignited that the gas in the gas barrel is exhausted.

Since the gas in the gas bucket is changed from liquid to gas, and then output to the outside (gas stove, water heater), therefore, when the weather is cold, the gas pressure is small, which may cause the gas to be used up but cannot be burned due to insufficient pressure. Circumstances; therefore, the pressure in the gas barrel is related to the general room temperature. If the temperature is high, the pointer indicating pressure will also increase, and vice versa, when the temperature is low, the indicating pressure will also decrease. It can be seen that simply using a pressure gauge to detect the amount of gas in the gas bucket can hardly avoid a certain degree of distortion.

In view of this, it is necessary to provide a gas sensing device to solve the above-mentioned problems.

In order to solve the above-mentioned problems, the object of the present invention is to provide a gas sensing device that can be installed in a gas bucket and generates a gas replacement signal with temperature compensation through comparison and judgment of the preset values including temperature and pressure values. , It can more accurately remind the replacement when the gas in the gas bucket is about to run out.

The second objective of the present invention is to provide a gas barrel distribution system with the gas sensing device, which can plan the path of several users who need to replace the gas, so as to generate a distribution schedule form for the gas supply end to rely on. The dispatch schedule form for the gas dispatcher.

The elements and components described in the full text of the present invention use the quantifiers "one" or "one" for convenience and to provide the general meaning of the scope of the present invention; in the present invention, it should be construed as including one or at least one, and single The concept of also includes the plural, unless it clearly implies other meanings.

Approximate terms such as "combination", "combination" or "assembly" mentioned in the full text of the present invention mainly include the types that can be separated without destroying the components after being connected, or the components cannot be separated after being connected, which are common knowledge in the field Those can be selected based on the materials of the components to be connected or assembly requirements.

The gas sensing device of the present invention includes: a gas regulator with an air duct body, two ends of the air duct body respectively form an air inlet end and an air supply end, between the air inlet end and the air supply end It is provided with a pressure sensing end, the pressure sensing end communicates with the air inlet end and the air supply end; a sensing module with a pressure sensor and a temperature sensor, the pressure sensor is A pressure detecting end is combined with the pressure detecting end and fixed to the gas regulator with a fixing member. The pressure sensor is used to sense the gas pressure data in the airway tube to generate a pressure value. The temperature sensor The device is used to sense the ambient temperature and generate a temperature value; a communication module is arranged in the gas regulator, the communication module has a storage unit and a transmission unit, the storage unit is used to store a user contact information; a processing The sensor is electrically connected to the sensing module and the communication module, and the processor is built with a plurality of preset values including temperature and pressure values. The processor first determines the temperature after receiving the pressure and temperature values. If the value reaches the temperature value of one of the preset values, then it is judged whether the pressure value is lower than the preset value of the transmission. If it is judged that the pressure value is lower than the preset value of the transmission, it will be based on the user The contact data generates a gas replacement signal, the processor sends a control signal to the transmission unit to control the transmission unit to send the gas replacement signal to an external device; and a power supply module is electrically connected to the processor and used To provide electricity.

The gas barrel distribution system of the present invention includes: a gas supply end for supplying and distributing the gas barrel, the gas supply end has a communication device; a plurality of user ends each have a gas barrel equipped with the gas sensing device, the gas The user contact data of the sensing device has a user address; and a cloud server, which is coupled to the contact device and the gas sensing devices. When the cloud server receives the gas replacement signal, the cloud server uses a path The planning algorithm performs path planning on the user's address to generate a delivery schedule form, and the cloud server transmits the delivery schedule form to the contact device.

Accordingly, the gas barrel replacement reminding system and the gas barrel distribution system with the gas sensing device of the present invention sense a temperature value generated by the ambient temperature used in the present invention through the temperature sensor, and cooperate with the processor to have a built-in experiment Obtain multiple preset values including temperature value and pressure value to form a pressure sensing mechanism with temperature compensation, which can more accurately know the remaining amount of gas in the gas barrel, and notify the gas supply end in time so that the gas can be supplied The client can actively assist the client to replace the gas bucket. Furthermore, it is also possible to perform route planning according to the user addresses of several users who need to replace the gas bucket to generate a distribution schedule form for the gas supplier to distribute the gas bucket according to the distribution schedule form. In this way, it can prevent the user from knowing that the gas is exhausted when the gas appliance cannot be ignited, and can reduce the manpower and time spent by the gas supplier in the distribution, which can avoid the inconvenience of life caused by the lack of gas and reduce the gas. Functions such as distribution cost.

Wherein, the sensing module has a power sensor, the power sensor is used to sense the power of the power supply module to generate a remaining power value, and the processor analyzes whether the remaining power value is lower than a power threshold If the analysis result is yes, another battery replacement signal is generated based on the user contact data, and the processor sends another control signal to the transmission unit to control the transmission unit to send the battery replacement signal to the external device. In this way, the system has the effect of reminding the user or gas supplier to replace the battery.

The gas sensing device of the present invention may further include an upper cover combined with the gas regulator, and the upper cover and the gas regulator jointly cover the sensing module, the communication module, the processor, and the power supply Module. In this way, the electronic components can be encapsulated in the gas regulator and the upper cover, and the electronic components can be protected.

Wherein, the sensing module uses a power sensor to sense the power of the power supply module to generate a remaining power value, and the processor analyzes whether the remaining power value is lower than a power threshold value, and if the analysis result is yes , Generate a battery replacement signal based on the user contact information, and send the battery replacement signal to the cloud server. When the cloud server receives the battery replacement signal, the cloud server generates the battery replacement signal according to the battery replacement signal. The delivery schedule form, and the delivery schedule form is transmitted to the contact device. In this way, it has the function of reminding the gas industry to replace the battery.

In order to make the above and other objectives, features and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention in conjunction with the accompanying drawings in detail as follows:

Please refer to Figures 1 to 4, which is a preferred embodiment of the gas sensing device of the present invention, which includes a gas regulator 1, a sensing module 2, a communication module 3, a processor 4 and A power supply module 15, the sensing module 2 is combined with the gas regulator 1, the communication module 3 is provided in the gas regulator 1, the processor 4 is electrically connected to the sensing module 2 and the communication module Group 3 and the power supply module 15.

The appearance of the gas regulator 1 is not limited in the present invention. The gas regulator 1 has an air duct body 11, and two ends of the air duct body 11 respectively form an air inlet end 12 and an air supply end 13 The air inlet 12 can be used to connect a gas source (such as a gas bucket), and the gas supply end 13 can be used to connect a gas appliance (such as a gas stove). A pressure test end 14 is provided between the air inlet 12 and the air supply end 13, and the pressure test end 14 is communicated with the air inlet 12 and the air supply end 13.

The sensing module 2 has a pressure sensor 21 and a temperature sensor 25. The pressure sensor 21 is coupled to the pressure sensing end 14 with a pressure detecting end 22, and is fixed to the pressure sensing end 14 with a fixing member 23 The gas regulator 1. The pressure sensor 21 is used to sense the gas pressure data in the airway body 11 to generate a pressure value 211; the temperature sensor 25 is used to sense the ambient temperature used in the implementation of the present invention and generate a temperature value 251 .

The communication module 3 is provided in the gas regulator 1. The communication module 3 has a storage unit 31 and a transmission unit 32. The storage unit 31 is used to store a user contact information. In this embodiment, the storage unit 31 is a user identity module (SIM), and the user contact information can include at least one of a user's address, a user's phone number, and a user's social group account. The transmission unit 32 can be used to send a notification signal with the user contact information. For example, but without limitation, the transmission unit 32 can be a wireless transmission unit such as GSM, WiFi, Zigbee, NB-IoT, Sigfox, or LoRa. . Default value

The processor 4 is electrically connected to the sensing module 2 and the communication module 3. The processor 4 can be an electronic component with signal generation, logic judgment and data storage functions, such as a microcontroller (MCU); and The processor 4 has built-in multiple preset values 41 including temperature values and pressure values. Each preset value 41 is an experimentally obtained pressure value from 8°C to 38°C with corresponding temperature (, the report The preset value 41 can be converted into a residual amount of gas when the gas content is insufficient. Only two sets of values at 20°C and 30°C are cited as examples. The preset value 41 corresponding to 20°C is 21~22psi after experiments. When the room temperature reaches 30℃ in summer, the preset value 41 is 31~32psi). After the processor 4 receives the pressure value 211 and the temperature value 251, it first determines whether the temperature value 251 has reached the temperature value of one of the preset values 41, and then determines whether the pressure value 211 is lower than the preset value 41. Pressure value, if it is judged that the pressure value 211 is lower than the pressure value of the preset value 41 (for example, when the received temperature value 251 is 30°C, the pressure value 41 is lower than 31 psi, and the received temperature value 251 is 20°C When the pressure 41 is lower than 21 psi), a gas replacement signal 42 is generated according to the user contact information, and the processor sends a control signal 43 to the transmission unit 32 to control the transmission unit 32 to send the gas replacement signal 42 To an external device, the external device can be a cloud server; if the judgment result is no, no additional action is required.

The power supply module 15 is electrically connected to the processor 4, and the power supply module 15 is used to provide electrical energy. In this embodiment, the power supply module 15 can be an alkaline battery, a lithium battery or an external power source. There is no limitation in the present invention.

The sensing module 2 of the gas sensing device of the present invention may also have a power sensor 24 for sensing the power of the power supply module 15 to generate a remaining power value 241. The processor 4 can analyze whether the remaining power value 241 is lower than a power threshold value, and if the analysis result is yes, another battery replacement signal 44 is generated based on the user contact data, and the processor 4 can send another control signal to The transmission unit 32 controls the transmission unit 32 to send the battery replacement signal 44 to the external device; if the analysis result is negative, no additional action is required.

The gas sensing device of the present invention may also have an upper cover 16, and the appearance of the upper cover 16 is not limited in the present invention. The upper cover 16 is combined with the gas regulator 1. Preferably, the upper cover 16 and the gas regulator 1 can jointly cover the sensing module 2, the communication module 3, the processor 4, and the power supply module 15.

According to the foregoing structure, the gas sensing device of the present invention can write the user contact information into the storage unit 31 in advance. During installation, the gas regulator 1 can be connected to the gas inlet 12 of a gas bucket by the user or a service provider, and the gas supply 13 can be connected to a gas appliance through a pipe body, such as gas. Furnace to complete the installation. The pressure sensor 21 continuously monitors the pressure change of the gas in the gas barrel from the air inlet 12 to the air supply 13 to generate a pressure value 211; at the same time, the temperature sensor 25 senses A temperature value 251 is generated by measuring the ambient temperature used in the implementation of the present invention. The processor 4 receives the pressure value 211 and the temperature value 251 and first determines whether the temperature value 251 reaches the temperature value of one of the preset values 41, and then determines whether the pressure value 211 is lower than the pressure value of the preset value 41 If it is determined that the pressure value 211 is lower than the pressure value of the sending preset value 41, the processor 4 may transmit the user contact data to a cloud server through the transmission unit 32, so that the cloud server can rely on the user The contact information informs the user to inform the user that the gas is insufficient and must be replaced, and the user contact information is sent to the gas supplier so that the gas supplier can actively assist the user to replace the gas bucket.

On the other hand, the power sensor 24 continuously monitors the power of the power supply module 15 to generate a remaining power value 241. The processor 4 receives and analyzes whether the remaining power value 241 is lower than a power threshold value. If the analysis result is yes, the processor 4 can transmit the user contact data to the cloud server through the transmission unit 32, so that The cloud server sends the user contact information to the gas supplier so that the gas supplier can actively assist the user to replace the power supply module 15.

Compared with the above-mentioned household-type structure of the gas regulator 1, it can only be used in connection with a single gas barrel; as shown in the following figures 5 to 7, the second embodiment of the gas sensing device of the present invention is a business that connects multiple gas barrels. Type structure, including: an air guide manifold 5, with a pressure test end 51, a plurality of bifurcated and extended air supply end 52 and a plurality of intake ends 53 and communicate with each other, the plurality of intake ends 53 are connected to a plurality of gas barrels Guide the gas to each of the plural intake ports 53.

The set of socket 6 has an external part 61 protruding outward, and the external part 61 has an external thread 611 to provide an internal screw hole (not shown in the figure) arranged on the pressure test end 51.

A sensing module 2 is arranged in the assembly shell 6, and has a pressure sensor 21, a temperature sensor 25, and a power cord 26 connected to an external power source. The pressure sensor 21 uses a pressure detection terminal 22 is connected to the external part 61 through a set of a fixing member 23 and a screw. The pressure sensor 21 is used to connect to the pressure sensing terminal 51 through the combined external part 61 and sense the air guide manifold. The gas pressure data in the tube 5 generates a pressure value 211, and the temperature sensor 25 is used to sense the ambient temperature and generate a temperature value 251.

A communication module 3 is arranged in the assembly shell 6. The communication module 3 has a storage unit 31 and a transmission unit 32. The storage unit 31 is used for storing a user contact information.

And a processor 4, which is arranged in the assembly shell 6 and is electrically connected to the sensing module 2 and the communication module 3, and the processor is built with a plurality of preset values including temperature values and pressure values 41. The processor 4 receives the pressure value 211 and the temperature value 251, first determines whether the temperature value 251 reaches one of the preset values 41, and then determines whether the pressure value 211 is lower than the preset value 41. If it is determined that the pressure value 211 is lower than the pressure value of the sending preset value 41, a gas replacement signal 42 is generated according to the user contact data, and the processor sends a control signal 43 to the transmission unit 32 to control The transmission unit 32 sends the gas replacement signal 42 to an external device (cloud server).

Next, the distribution operations of the above two embodiments will be described. Please refer to Figures 1 to 8. It includes a gas supplier 7, several clients 8 and a cloud server 9. The gas supplier 7 has a contact Device 71, each client 8 has a gas bucket equipped with the above-mentioned gas sensing device G, and the cloud server 9 is coupled to the contact device 71 and the plurality of gas sensing devices G.

The gas supply end 7 is used for supplying and distributing gas barrels. The gas supply end 7 has the contact device 71. In this embodiment, the contact device 71 can receive messages by installing social software (such as LINE). For example, the contact device 71 can be a mobile phone, a tablet or a personal computer, but is not limited to this.

The plurality of user terminals 8 respectively have a gas bucket provided with the gas sensing device G, and the user contact information of the gas sensing device G has a user address.

The cloud server 9 is coupled to the contact device 71 and the plurality of gas sensing devices G. When the cloud server 9 receives the gas change signal 42, the cloud server 9 uses a path planning algorithm for the user address Perform path planning. In this embodiment, the path planning algorithm may be a shortest path algorithm (Dijkstra's Algorithm) to generate a delivery schedule 91. The cloud server 9 transmits the distribution schedule form 91 to the contact device 71 for the gas supplier 7 to distribute the gas bucket according to the distribution schedule form 91.

On the other hand, the sensing module 2 uses the power sensor 24 to sense the power of the power supply module 15 to generate a remaining power value 241. The processor 4 can analyze whether the remaining power value 241 is lower than a power threshold value, and if the analysis result is yes, another battery replacement signal 44 is generated based on the user contact data, and the battery replacement signal is sent to the cloud server器9. When the cloud server 9 receives the battery replacement signal 44, the cloud server 9 generates the delivery schedule 91 according to the battery replacement signal 44, and sends the delivery schedule 91 to the contact device 71 to The gas supply end 7 is provided for the replacement of the power supply module 15 according to the distribution schedule 91.

In summary, the gas sensing device of the present invention and the gas bucket distribution system with the gas sensing device use the temperature sensor 25 to sense a temperature value 251 generated by the ambient temperature used in the present invention, and cooperate with the processor 4 It has built experiments to obtain multiple preset values 41 including temperature and pressure values, which can be used to construct a temperature-compensated pressure sensing mechanism, which can more accurately know the remaining amount of gas in the gas barrel and notify the gas supply in time to The gas supply end can actively assist the user end to replace the gas barrel. Moreover, it is also possible to perform route planning based on the user addresses of several users who need to replace the gas bucket to generate a distribution schedule form to provide the gas supply terminal for the gas bucket to be distributed according to the distribution schedule form. In this way, it can prevent the user from knowing that the gas is exhausted when the gas appliance cannot be ignited, and can reduce the manpower and time spent by the gas supplier in the distribution, which can avoid the inconvenience of life caused by the lack of gas and reduce the gas. Functions such as distribution cost.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art without departing from the spirit and scope of the present invention may make various changes and modifications relative to the above-mentioned embodiments. The technical scope of the invention is protected. Therefore, the scope of protection of the invention shall be subject to the scope of the attached patent application.

〔this invention〕 1‧‧‧Gas regulator 11‧‧‧Trachea body 12、53‧‧‧Inlet end 13, 52‧‧‧Air supply side 14, 51‧‧‧Pressure test end 15‧‧‧Power supply module 16‧‧‧Top cover 2‧‧‧Sensing Module 21‧‧‧Pressure sensor 211‧‧‧Pressure value 22‧‧‧Pressure detection terminal 23‧‧‧Fixed parts 24‧‧‧Power sensor 241‧‧‧Remaining battery value 25‧‧‧Temperature sensor 251‧‧‧Temperature value 26‧‧‧Power cord 3‧‧‧Communication Module 31‧‧‧Storage Unit 32‧‧‧Transmission unit 4‧‧‧Processor 41‧‧‧Preset value for reporting 42‧‧‧ Gas replacement signal 43‧‧‧Control signal 44‧‧‧Battery replacement signal 5‧‧‧Air guide manifold 6‧‧‧Assembly shell 61‧‧‧External part 7‧‧‧Gas supply side 71‧‧‧Contact device 8‧‧‧Client 9‧‧‧Cloud Server 91‧‧‧Delivery Schedule Form G‧‧‧Gas sensing device

The first figure is a schematic diagram of the three-dimensional assembly of the present invention. The second figure is a three-dimensional exploded schematic diagram of the present invention with the upper cover removed. The third figure is a three-dimensional exploded schematic view of the present invention. The fourth figure is a system block diagram of the gas sensing device of the present invention. The fifth figure is a three-dimensional exploded schematic view of the structure of the second embodiment of the present invention. The sixth figure is another perspective exploded schematic view of the structure of the second embodiment of the present invention. The seventh figure is a schematic plan view of the structure of the second embodiment of the present invention connected to a plurality of gas barrels to provide use. Figure 8 is a system block diagram of a preferred embodiment of the gas bucket distribution system of the present invention.

1‧‧‧Gas regulator 11‧‧‧Trachea body 12‧‧‧Inlet end 13‧‧‧Air supply side 16‧‧‧Top cover

Claims (7)

A gas sensing device, including: A gas regulator has an air duct body. Two ends of the air duct body respectively form an air inlet end and an air supply end. A pressure test end is arranged between the air inlet end and the air supply end. The pressure The tested end communicates with the air inlet end and the air supply end; A sensing module has a pressure sensor and a temperature sensor. The pressure sensor is coupled to the pressure sensing end with a pressure detection end, and is fixed to the gas regulator with a fixing member. The pressure sensor is used to sense the gas pressure data in the airway tube to generate a pressure value, and the temperature sensor is used to sense the ambient temperature and generate a temperature value; A communication module arranged in the gas regulator, the communication module having a storage unit and a transmission unit, and the storage unit is used for storing a user contact information; A processor electrically connected to the sensing module and the communication module, and the processor is built with a plurality of preset values including temperature values and pressure values, and the processor first judges after receiving the pressure values and temperature values Whether the temperature value reaches one of the preset values of the transmission, and then judge whether the pressure value is lower than the pressure value of the preset value of the transmission, if it is judged that the pressure value is lower than the pressure value of the preset value of the transmission, then according to The user contact data generates a gas replacement signal, and the processor sends a control signal to the transmission unit to control the transmission unit to send the gas replacement signal to an external device; and A power supply module is electrically connected to the processor and used to provide electrical energy. For example, the gas sensing device described in the first item of the scope of patent application, wherein the sensing module has a power sensor, and the power sensor is used to sense the power of the power supply module to generate a remaining power value, The processor analyzes whether the remaining power value is lower than a power threshold value, and if the analysis result is yes, another battery replacement signal is generated based on the user contact data, and the processor sends another control signal to the transmission unit to control The transmission unit sends the battery replacement signal to the external device. For example, the gas sensing device described in item 1 or 2 of the scope of patent application further includes an upper cover, the upper cover is combined with the gas regulator, and the upper cover and the gas regulator jointly cover the sensing module and the communication module , The processor and the power supply module. A gas bucket distribution system is provided with the gas sensing device as described in item 1 of the scope of patent application, and the system includes: A gas supply end for supplying and distributing gas barrels, and the gas supply end has a communication device; Several client terminals each have a gas bucket equipped with the gas sensing device, and the user contact information of the gas sensing device has a user address; and A cloud server is coupled to the contact device and the plurality of gas sensing devices. When the cloud server receives the gas replacement signal, the cloud server uses a path planning algorithm to route the user's address to A delivery schedule form is generated, and the cloud server sends the delivery schedule form to the contact device. For example, the gas bucket distribution system described in item 4 of the scope of patent application, wherein the sensing module uses a power sensor to sense the power of the power supply module to generate a remaining power value, and the processor analyzes the remaining power Whether the power value is lower than a power threshold, if the analysis result is yes, another battery replacement signal is generated based on the user’s contact information, and the battery replacement signal is sent to the cloud server. When the cloud server receives the When the battery replacement signal is used, the cloud server generates the delivery schedule form according to the battery replacement signal, and transmits the delivery schedule form to the contact device. A gas sensing device, including: An air guide manifold has a pressure test end, a branched and extended air supply end, and a plurality of air intake ends which are connected to each other. The air intake ends are connected to multiple gas buckets to guide gas to each air intake end; A set of connecting shells has an external part protruding outward, and the external part is assembled on the pressure test end; A sensing module is arranged in the assembly housing, with a pressure sensor, a temperature sensor, and a power cord connected to an external power source. The pressure sensor is connected to the external connection through a pressure detection terminal. The pressure sensor is used to connect to the pressure measurement end through the combined external part, and sense the gas pressure data in the air guide manifold and generate a pressure value , The temperature sensor is used to sense the ambient temperature and generate a temperature value; A communication module, which is arranged in the assembly shell, the communication module has a storage unit and a transmission unit, the storage unit is used for storing a user contact information; And a processor, which is arranged in the assembly shell and is electrically connected to the sensing module and the communication module, and the processor is built with a plurality of preset values including temperature values and pressure values, the processor Receiving the pressure value and temperature value, first determine whether the temperature value reaches one of the preset values of the transmission, and then determine whether the pressure value is lower than the pressure value of the transmission preset value, if it is determined that the pressure value is lower than the transmission value The preset pressure value generates a gas replacement signal based on the user contact data, and the processor sends a control signal to the transmission unit to control the transmission unit to send the gas replacement signal to an external device. A gas barrel distribution system is provided with the gas sensing device as described in item 6 of the scope of patent application, and the system includes: A gas supply end for supplying and distributing gas barrels, and the gas supply end has a communication device; Several client terminals each have a gas bucket equipped with the gas sensing device, and the user contact information of the gas sensing device has a user address; and A cloud server is coupled to the contact device and the plurality of gas sensing devices. When the cloud server receives the gas replacement signal, the cloud server uses a path planning algorithm to route the user's address to A delivery schedule form is generated, and the cloud server sends the delivery schedule form to the contact device.

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