CN210515741U

CN210515741U - Novel thing networking is made and is trained platform

Info

Publication number: CN210515741U
Application number: CN201921543827.1U
Authority: CN
Inventors: 郭红
Original assignee: Shanghai Youqian Intelligent Technology Co ltd
Current assignee: Shanghai Youqian Intelligent Technology Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-12
Anticipated expiration: 2029-09-17

Abstract

A novel Internet of things training station comprises an Internet of things training station body, a three-core power plug, a three-core power socket, a voltage-stabilized power supply, a short message module and a buzzer, and further comprises a water leakage demonstration probe, a fire disaster demonstration probe, a natural gas leakage demonstration probe and a control circuit; the three-core power socket, the stabilized voltage power supply, the short message module, the buzzer and the control circuit are arranged in an element box and connected through a lead, the element box is arranged on the training platform body, and the water leakage demonstration probe, the fire disaster demonstration probe and the natural gas leakage demonstration probe are respectively inserted into the three-core power socket through the three-core power plug. The utility model discloses have all functions of current thing networking teaching platform, because the student can manual operation to can directly perceivedly obtain the work process demonstration of thing networking detection alarm device when simulation leaks, conflagration, natural gas leakage, thereby can reach better learning effect, and can improve mr's teaching efficiency. Based on the above, so this novel application prospect that has.

Description

Novel thing networking is made and is trained platform

Technical Field

The utility model relates to a learning equipment field, especially a novel thing networking is made and is trained platform.

Background

The internet of things is the combination of computer and internet technologies, and realizes real-time sharing of environment and state information between objects, and intelligent collection, transmission, processing, execution and the like. In a broad sense, the application of information technology is now involved in the category of the internet of things. The technology of the internet of things profoundly changes the life, study, working modes and the like of people; therefore, training of various levels of colleges and universities on the technology of the internet of things is an important course. In the teaching of the internet of things, a PC (personal computer) and a display screen which are connected with the internet are installed, and a training platform which is necessary to be matched with other necessary equipment in various other corresponding learning is installed, so that the teaching of a student can be facilitated, and the teaching platform is generally used for the standard matching of the student in the teaching of the internet of things.

The existing internet of things training platform is limited in structure and generally only has the function of providing various internet of things knowledge learned through a PC (personal computer), so that a student learns and grasps knowledge points more on the basis of theory, and a good learning effect cannot be achieved. In the application of internet of things technologies such as actual life and production, the technology of detecting various indoor water leakage, fire and gas leakage and sending signals to a mobile phone or a Personal Computer (PC) in real time when water leakage, fire and gas leakage occur is widely applied, and economic losses and the like caused by water leakage, fire and gas leakage can be reduced as much as possible. Therefore, the teaching method is also an important knowledge point in the teaching of the internet of things. Because the existing internet of things training platform cannot provide the demonstration function for simulating the detection and processing working process of related equipment when water leakage, fire and natural gas leakage occur indoors, in the teaching of the internet of things, a student cannot obtain a good learning effect when learning the subjects.

Disclosure of Invention

In order to overcome the defects that the prior Internet of things training station cannot visually provide a demonstration function for simulating the detection and processing working process of related equipment when water leakage, fire and natural gas leakage occur indoors due to the structure limitation, and a student cannot obtain good learning effect in the Internet of things teaching, the utility model provides a water leakage demonstration probe, a fire demonstration probe and a natural gas leakage demonstration probe which not only have all functions of the prior Internet of things teaching station, but also have convenient insertion and separation with the teaching station body respectively, and in the learning of the related technology of the Internet of things, the student can conveniently insert three-core power plugs of various probes into a three-core power socket at the front upper end of the Internet of things teaching station body respectively according to needs, and further under the action of a control circuit in the teaching station body in learning, the control circuit can enable a sounder to make a loud prompt sound when water leakage, fire and natural gas leakage occur respectively, meanwhile, the short message module can send short messages to mobile phones of students, and the students can operate manually and visually and respectively obtain working process demonstration of the Internet of things detection alarm equipment when water leakage, fire and natural gas leakage are simulated, so that a novel Internet of things training platform with a better learning effect can be achieved.

The utility model provides a technical scheme that its technical problem adopted is:

a novel Internet of things training station comprises an Internet of things training station body, a three-core power plug, a three-core power socket, a voltage-stabilized power supply, a short message module and a buzzer, and is characterized by further comprising a water leakage demonstration probe, a fire disaster demonstration probe, a natural gas leakage demonstration probe and a control circuit; the three-core power socket, the stabilized voltage power supply, the short message module, the buzzer and the control circuit are arranged in an element box, the element box is arranged on the training platform body, the front ends of three jacks of the three-core power socket are positioned outside the element box, and grooves are formed in the side ends of the element box; the positive and negative pole power output ends of the voltage-stabilized power supply are respectively connected with two wiring ends of the three-core power socket, the control power input end and the negative power input end of the control circuit through wires, the control circuit power output end, the voltage-stabilized circuit negative power output end, the signal sounder and the short message module power input end are respectively connected through wires, and the positive power input end of the control circuit is connected with the third wiring end of the three-core power socket through wires; the water leakage demonstration probe, the fire disaster demonstration probe and the natural gas leakage demonstration probe are respectively arranged in a shell, the water leakage demonstration probe, the fire disaster demonstration probe and the natural gas leakage demonstration probe are respectively provided with a three-core power plug, and the three-core power plugs of the water leakage demonstration probe, the fire disaster demonstration probe and the natural gas leakage demonstration probe are respectively inserted into the three-core power socket.

Furthermore, the shells for installing the water leakage demonstration probe, the fire demonstration probe and the natural gas leakage demonstration probe are consistent in appearance size, a bulge is arranged at the side end of each shell, the length of the rear end of each bulge is larger than that of the rear end of each shell, and the outer diameter of each bulge is smaller than the outer diameter of the groove of each element box.

Furthermore, the voltage-stabilized power supply is an alternating current 220V-to-direct current switching power supply module, the short message module is a short message alarm module, a negative power supply input end of the short message module is connected with one low-level trigger signal input end through a wire, and the buzzer is an active continuous sound alarm sounder.

Furthermore, the water leakage demonstration probe comprises a resistor, metal sheets, an NPN triode and a PNP triode, wherein the resistor, the NPN triode and the PNP triode are installed on a circuit board and connected through circuit board wiring, the upper end of a first three-core power plug is fixedly installed at the lower end of the circuit board, the circuit board is installed at the lower end in a first shell, the lower end of the three-core power plug is located on the outer side of the shell, a third wiring end of the three-core power plug is connected with a PNP triode collector electrode, a first wiring end of the three-core power plug is respectively connected with one end of the first resistor and an emitting electrode of the PNP triode, a second wiring end of the three-core power plug is connected with the emitting electrode of the NPN triode, the NPN triode collector electrode is connected with one end of a second resistor, the other end of the second resistor is connected with a base electrode of the, The base electrodes of the NPN triodes are connected, and the two metal sheets are positioned at the outer end of the shell.

Furthermore, the fire demonstration probe comprises a negative temperature coefficient thermistor, an NPN triode, a PNP triode, an adjustable resistor and a resistor, wherein the NPN triode, the PNP triode, the adjustable resistor and the resistor are installed on a circuit board and connected through a circuit board in a wiring mode, the upper end of a second three-core power plug is fixedly installed at the lower end of the circuit board, the circuit board is installed at the lower end in a second shell, the lower end of the three-core power plug is located on the outer side of the lower end of the shell, a third wiring end of the three-core power plug is connected with a collector of the PNP triode, a first wiring end of the three-core power plug is connected with an emitter of the PNP triode, a second wiring end of the three-core power plug is connected with the emitter of the NPN triode, the collector of the NPN triode is connected with one end of the resistor, the, The first terminal of the three-core power plug is connected, and the thermistor is positioned at the outer end of the shell.

Furthermore, the natural gas leakage demonstration probe comprises an NPN triode, a PNP triode, a resistor and a gas-sensitive device, wherein the NPN triode, the PNP triode, the resistor and the gas-sensitive device are connected through a circuit board in a wiring way, the upper end of a third three-core power plug is fixedly arranged at the lower end of the circuit board, the circuit board is arranged at the lower end in a third shell, the lower end of the three-core power plug is positioned at the outer side of the lower end of the shell, the model of the gas-sensitive device is QM-N5, the third terminal of the three-core power plug is connected with a collector of the PNP triode, the first terminal of the three-core power plug is connected with an emitter of the PNP triode, one end of the first resistor and the first measuring electrode of the gas-sensitive device, the other end of the first resistor is connected with the positive power input end of the gas-, the other end of the second resistor is connected with the base electrode of the NPN triode, the collector electrode of the NPN triode is connected with one end of the third resistor, the other end of the third resistor is connected with the base electrode of the PNP triode, and the front end detection head of the gas sensor is positioned on the rear side of the opening of the shell.

Further, the control circuit is a relay.

The utility model has the advantages that: the utility model discloses have all functions of current thing networking teaching platform, the work process demonstration of thing networking detection alarm device when can also realizing respectively that the simulation leaks, conflagration, natural gas leak reaches good learning effect. When the water leakage demonstration is simulated and demonstrated, a three-core power plug of the water leakage demonstration probe is inserted into a three-core power socket, then the plastic sheet provided with two copper sheets is put into water, and then the control circuit can control the sounder to sound and the short message module to send out a short message under the action of an internal circuit of the water leakage demonstration probe. When the simulation demonstration fire detection is carried out, a three-core power plug of the fire demonstration probe is inserted into a three-core power socket, a fire source such as a lighter is close to a thermistor for a short time, and then under the action of an internal circuit of the fire demonstration probe, a control circuit can control a buzzer to sound and a short message module to send a short message. When the simulation demonstration natural gas leakage detection is carried out, a three-core power plug of a natural gas leakage demonstration probe is inserted into a three-core power socket, a gas source of a lighter and the like is opened to be close to a gas sensitive device for a short time, and then the control circuit can control a buzzer to sound and a short message module to send a short message under the action of an internal circuit of the natural gas leakage demonstration probe. This is novel because student's ability manual operation to the working process demonstration of thing networking detection alarm device when can directly perceivedly obtain the simulation and leak, conflagration, natural gas leak, thereby can reach better learning effect, and can improve mr's teaching efficiency. Based on the above, so this novel application prospect that has. Based on the above, so this novel application prospect that has.

Drawings

The invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, a novel internet of things training station comprises an internet of things training station body 1, a three-core power plug, a three-core power socket 9, a voltage-stabilized power supply 2, a short message module 3 and a buzzer 4, wherein the internet of things training station body 1 is provided with a PC and a display screen connected with the internet, and is provided with various other necessary supporting equipment in corresponding learning, and the novel internet of things training station further comprises a water leakage demonstration probe 5, a fire disaster demonstration probe 6, a natural gas leakage demonstration probe 7 and a control circuit 8; the three-core power socket 9, the stabilized voltage power supply 2, the short message module 3, the buzzer 4 and the control circuit 8 are arranged on a circuit board, the circuit board is arranged in an element box 10, the element box 10 is arranged at the front upper left end of the training platform body 1, the front ends of three jacks of the three-core power socket 9 are positioned at the front outer sides of three openings distributed in the middle of the front end of the element box 10 from left to right, and the left end of the element box 10 is provided with a semicircular arc-shaped groove 101 distributed from front to back; the water leakage demonstration probe 5, the fire demonstration probe 6 and the natural gas leakage demonstration probe 7 are respectively installed in a

plastic shell

11, 12 and 13, the water leakage demonstration probe 5, the fire demonstration probe 6 and the natural gas leakage demonstration probe 7 are respectively provided with a three-

core power plug

51, 61 and 71, and the three-

core power plugs

51, 61 and 71 of the water leakage demonstration probe 5, the fire demonstration probe 6 and the natural gas leakage demonstration probe 7 are respectively inserted into the three-core power socket 9. When the water leakage demonstration probe 5, the fire disaster demonstration probe 6 and the natural gas leakage demonstration probe 7 are not used at ordinary times, the water leakage demonstration probes are placed in the drawer of the Internet of things training platform body 1.

As shown in figure 1, the

shells

11, 12 and 13 of the water leakage demonstration probe 5, the fire demonstration probe 6 and the natural gas leakage demonstration probe 7 are installed to be consistent in appearance size, a semicircular arc-shaped bulge 14 distributed from front to back is arranged at the left side end of each shell, the length of the rear end of the arc-shaped bulge 14 is larger than that of the rear end of each shell, the outer diameter of the arc-shaped bulge 14 is slightly smaller than that of an arc-shaped groove 101 of the element box, the water leakage demonstration probe 5, the fire demonstration probe 6 and the natural gas leakage demonstration probe 7 are ensured to be respectively inserted into the three-core power socket 9, and then the rear end of the arc-shaped bulge 14 of each shell is just positioned in the front end of the arc-shaped groove 101 at the left side end of the element box, and the left-right direction reverse insertion of the three-

core power plugs

51, 61 and 71 into.

As shown in fig. 1 and 2, the regulated power supply U1 is a finished product of a brand-oriented alternating current 220V-to-6V direct current switching power supply module with power of 50W. The short message module U2 is a finished product of a short message alarm module of brand Rong Mao, model JC01, a Sim card is arranged in a Sim card seat in a short message module U2, the short message module U2 is provided with two

power input ends

1 and 2, eight low-level signal input ports are 3-10, after one of the eight signal input ports is input with a low-level signal, the short message module U2 sends a short message through a wireless mobile network, eight short messages with different contents (the content of the embodiment is alarm) can be stored in the short message module U2, after one of the signal input ports is triggered by a low level, the short message module U2 can send short messages for six pre-stored telephone numbers at most at the same time, the telephone numbers stored in the short message module are mobile phone numbers used with teaching (the telephone numbers of a plurality of mobile phones used with teaching matching by a plurality of students are not consistent, and the short message module at each teaching station body corresponds to the telephone number of one mobile phone used with teaching, or the student's own mobile phone number, the negative power input end GND (pin 2) of the short message module U2 is connected with one of the low level trigger signal input ends D (pin 3). The buzzer B is an active continuous sound alarm sounder finished product with the brand Anxinwei and the model xlb. The water leakage demonstration probe comprises resistors R1 and R2, a metal sheet T1, an NPN triode Q1 and a PNP triode Q2, resistors R1 and R2, an NPN triode Q1 and a PNP triode Q2 which are arranged on a circuit board and are connected through circuit board wiring, a first three-core power plug CT1 is distributed at a certain distance from left to right and is welded at the lower end of the circuit board from top to bottom, the circuit board is arranged at the inner lower end of a first plastic shell 11, the lower end of a three-core power plug CT1 is positioned at the outer side of the lower end of the shell 11, a third terminal of the three-core power plug CT1 is connected with a collector of the NPN triode Q2, a first terminal of the three-core power plug CT1 is respectively connected with one end of the first resistor R1 and an emitter of the PNP triode Q2, a second terminal of the three-core power plug CT1 is connected with an emitter of the NPN triode Q1, a collector of the NPN triode Q1 is connected with one end of the second, the two metal sheets T1 are welded on a plastic sheet from left to right at a certain distance and are insulated from each other, the two metal sheets T1 are respectively connected with the other end of the first resistor R1 and the base electrode of the NPN triode Q1 through a lead with a certain length, and the two metal sheets T1 (15) are positioned at the outer end of the shell. The fire demonstration probe comprises a negative temperature coefficient thermistor RT, an NPN triode Q3, a PNP triode Q4, a resistor R3 and an adjustable resistor RP, the NPN triode Q3, the PNP triode Q4, a resistor R3 and the adjustable resistor RP are installed on a circuit board and are connected through circuit board wiring, a second three-core power plug CT2 is distributed at a certain distance from left to right and is welded at the lower end of the circuit board from top to bottom, the circuit board is installed at the inner lower end of a second plastic shell 12, the lower end of a three-core power plug CT2 is positioned at the outer side of the lower end of the shell, the third terminal of the three-core power plug CT2 is connected with a PNP triode Q4 collector, the first terminal of the three-core power plug CT2 is connected with an emitter of the PNP triode Q4, the second terminal of the three-core power plug CT2 is connected with an emitter of the NPN triode Q3, the NPN triode Q3959648 collector is connected with one, one end of the adjustable resistor RP is connected with the base electrode of the NPN triode Q3, two ends of the thermistor RT are respectively connected with the other end of the adjustable resistor RP and the first wiring end of the three-core power plug CT2 through a lead with a certain length, and the thermistor RT (16) is positioned at the outer end of the shell. The natural gas leakage demonstration probe comprises an NPN triode Q5, a PNP triode Q6, resistors R4, R5, R6 and a gas-sensitive device TT; the three-core power plug CT3 is connected by circuit board wiring, the third three-core power plug CT3 is distributed at a certain distance from left to right and welded at the lower end of the circuit board from top to bottom, the circuit board is arranged at the inner lower end of a third plastic shell 13, the lower end of a three-core power plug CT3 is positioned at the outer side of the lower end of the shell 13, the model of a gas-sensitive device TT is QM-N5, the third terminal of the three-core power plug CT3 is connected with a PNP triode Q6 collector, the first terminal of the three-core power plug CT3 is connected with a PNP triode Q6 emitter, one end of a first resistor R4 and a first measuring electrode a of the gas-sensitive device TT, the other end of the first resistor R4 is connected with the positive power input end of the gas-sensitive device TT, the second terminal of the three-core power plug CT3 is connected with an NPN triode Q5 emitter and the negative power input end of the gas-sensitive, the other end of the second resistor R5 is connected with the base of an NPN triode Q5, the collector of the NPN triode Q5 is connected with one end of a third resistor R6, the other end of the third resistor R6 is connected with the base of a PNP triode Q6, and the front end detection head of the gas-sensitive device TT is positioned on the rear side of the front end opening 131 of the shell. The control circuit is a relay K.

As shown in fig. 2, two

terminals

1 and 2 of the power input of regulated power supply U1 and two poles of 220V ac power supply are connected through leads respectively. The positive and negative pole power output end 3 and 3 feet of regulated power supply U1 and two of them wiring ends of three-core power socket CZ, the relay K control power input end and the relay K negative pole power input end of control circuit are connected respectively through the wire, control circuit power output end relay K normally open contact end, voltage stabilizing circuit U1 negative pole power output end 4 feet and signal sounder B power input both ends 1, the power input both

ends

1 and 2 feet (VCC, GND) of SMS module U2 are connected through the wire respectively, the positive power input end of control circuit relay K and the third wiring end of three-core power socket CT1 are connected through the wire.

As shown in figures 1 and 2, the novel Internet of things detection alarm device has all functions of the existing Internet of things teaching platform, can also respectively realize the work process demonstration of the Internet of things detection alarm device when water leakage, fire and natural gas leakage are simulated, and achieves a good learning effect. After the voltage stabilizing circuit U1 works by power supply, under the action of an internal circuit thereof, pins 3 and 4 can output stable 6V direct current power to enter a first terminal and a second terminal of the three-core power socket CZ, meanwhile, the positive pole of the 6V power enters the control power input end of the relay K, and the negative pole of the 6V power enters the negative power input ends of the relay K, the buzzer B and the short message module U2. When a student needs to perform simulation demonstration water leakage detection, after a three-core power plug CT1 of a water leakage demonstration probe is inserted into a three-core power socket CZ, positive and negative pole power output by a voltage-stabilized power supply U1 enters one end of a resistor R1, an emitting electrode of a PNP triode Q2 and an emitting electrode of an NPN triode Q1, and meanwhile, a collecting electrode of the PNP triode Q2 is communicated with an input end of a positive power supply of a relay K; a student puts a plastic sheet provided with two copper metal sheets T1 into a water cup (a water leakage probe detection surface used for simulating the Internet of things alarm device is submerged by water), at the moment, a positive power supply output by a pin 3 of a stabilized voltage power supply U1 is subjected to voltage reduction and current limitation by a resistor R1, and then enters a base electrode (higher than 0.7V) of an NPN triode Q1 through water and two metal copper sheets T1, so that the NPN triode Q1 is conducted to output a low level by a collector electrode thereof and enters a base electrode of a PNP triode Q2, the PNP triode Q2 is conducted to output a high level by a collector electrode thereof and enters a positive power supply input end of a relay K, and the negative power supply input end of the relay K is communicated with a pin 4 of a stabilized voltage power supply U1, so that the relay; because the relay K controls the power input end to be communicated with the 3 feet of the stabilized voltage power supply U1 at the moment, the positive power input ends of the buzzer B and the short message module U2 are connected with the normally open contact end of the relay K, and the negative power input ends of the buzzer B and the short message module U2 are communicated with the 4 feet of the stabilized voltage power supply U1, at the moment, the buzzer B and the short message module U2 can be electrified to work; the sounder B sends out a loud prompting sound after being electrified and prompts a simulation detection area to leak water on site, and the first low-level signal input end D of the short message module U2 is connected with the negative power supply input end of the short message module U2 can automatically send a short message to a mobile phone at the hand of a student after being electrified, so that the student can know that the simulation detection area leaks water after receiving the short message (in actual conditions, the content sent by the short message module U2 informs a user who is not at the remote site). When the two metal sheets T1 are not submerged in water and the resistance value between the two metal sheets is infinite, the NPN triode Q1 and the PNP triode Q2 are not conducted, the relay K is not electrified to be attracted, and the subsequent audible alarm B and the short message module U2 are not electrified to work.

As shown in fig. 1 and 2, when the fire demonstration is simulated and detected, after the three-core power plug CT2 of the fire demonstration probe is inserted into the three-core power socket CZ, the positive and negative pole power output by the regulated power supply U1 enters one end of the thermistor RT, the emitter of the PNP triode Q4 and the emitter of the NPN triode Q3, and meanwhile, the collector of the PNP triode Q4 is communicated with the positive power input end of the relay K; the student approaches the fire source such as the lighter to the temperature sensing surface of the thermistor RT (simulating the temperature sensing surface of a fire probe used by the alarm device of the Internet of things and sensing the rising change of the ambient temperature), when the temperature of the thermistor RT reaches more than 50 ℃ in a short time, the resistance value of the thermistor RT is rapidly reduced to about 4K, at the moment, the anode power supply output by a pin 3 of the stabilized voltage power supply U1 is subjected to voltage reduction and current limitation by the thermistor RT and the adjustable resistor RP, the base voltage of the anode power supply entering the NPN triode Q3 is higher than 0.7V, therefore, the NPN triode Q3 conducts the collector of the NPN triode Q3 to output low level to enter the base of the PNP triode Q4, the PNP triode Q4 conducts the collector of the PNP triode Q4 to output high level to enter the input end of the positive power supply of the relay K, because the input end of the negative power supply of the relay K is communicated with the pin 4 of the regulated power supply U1, at the moment, the relay K can be electrified to close the control power supply input end and the normally open contact end; because the relay K controls the power input end to be communicated with the 3 feet of the stabilized voltage power supply U1 at the moment, the positive power input ends of the buzzer B and the short message module U2 are connected with the normally open contact end of the relay K, and the negative power input ends of the buzzer B and the short message module U2 are communicated with the 4 feet of the stabilized voltage power supply U1, at the moment, the buzzer B and the short message module U2 can be electrified to work; the sounder B sends out a loud prompting sound after being electrified, and prompts a simulated detection area to have a fire, and the first low-level signal input end D of the short message module U2 is connected with the negative power supply input end GND of the short message module U2 automatically sends a short message to a mobile phone at the hand of a student after being electrified, so that the student can know that the simulated detection area has the fire after receiving the short message (in actual conditions, the short message module U2 sends a notice to a user who is not at the far end of the scene). The temperature sensing surface of the thermistor RT has a high resistance value at room temperature, the voltage entering the NPN triode Q1 through the thermistor RT and the adjustable resistor RP is lower than 0.7V, then the NPN triode Q3 and the PNP triode Q4 cannot be conducted, the relay K cannot be electrified and attracted, and the subsequent annunciator B and the short message module U2 cannot be electrified and work. In the production of the novel resistor, a producer needs to predetermine the resistance value of the adjustable resistor RP, attach an external electric heating sheet with a constant temperature of about 50 ℃ to one side of a temperature sensing surface of the thermistor RT, and then slowly adjust the resistance value of the adjustable resistor RP, so that the resistance value of the adjustable resistor RP is adjusted to the required resistance value just after the sounding device B sounds; then the power supply is cut off, and a tester tests the resistance value of the adjustable resistor RP by using a universal meter, so that the resistance value of the adjustable resistor RP at the moment is the resistance value required by subsequent production, the resistance value of the adjustable resistor RP can be directly adjusted in place in the subsequent production, and the resistance value of the adjustable resistor RP does not need to be adjusted and determined; the fixed resistor with the same resistance value as the determined adjustable resistor RP can be directly adopted to replace the adjustable resistor.

As shown in fig. 1 and 2, when the natural gas leakage detection in the simulation demonstration room is performed, after the three-core power plug CT3 of the natural gas leakage demonstration probe is inserted into the three-core power socket CZ, the positive and negative pole power output by the regulated power supply U1 enters one end of a resistor R4, an emitter of a PNP triode Q6, a first measuring pole a of a gas sensitive device TT, an emitter of the NPN triode Q5, and a negative pole power input end of the gas sensitive device TT, and meanwhile, a collector of the PNP triode Q6 is communicated with a positive pole power input end of a relay K; after the resistor R4 reduces the voltage and limits the current, the power supply enters the positive power supply input end of the gas-sensitive device TT, so that the gas-sensitive device TT is in an electrified working state; when the gas sensor TT has no combustible gas leakage in the surrounding environment, the resistance between the two measurement electrode pins a and B of the gas sensor TT is large, the voltage entering the base electrode of the NPN triode Q5 is lower than 0.7V after the measurement electrode pin B end of the gas sensor TT is subjected to voltage reduction and current limitation through the resistor R5, then the NPN triode Q5 and the PNP triode Q6 cannot be conducted, the relay K cannot be electrified and attracted, and the subsequent sounder B and the short message module U2 cannot be electrified and work. The student brings gas sources such as lighters (the lighters only open the gas valve without firing, and gas is discharged into the air) close to the shell opening 131 near the gas-sensitive device TT (a gas leakage probe used by the alarm equipment of the Internet of things is simulated, the surrounding combustible gas leakage is sensed), after the gas-sensitive device TT detects, the resistance between the two measurement electrode pins a and b of the gas-sensitive device TT is reduced, the voltage entering the base electrode of the NPN triode Q5 after the measurement electrode pin b end of the gas-sensitive device TT is subjected to voltage reduction and current limitation through the resistor R5 is higher than 0.7V, so that the NPN triode Q5 is conducted, the collector electrode output low level enters the base electrode of the PNP triode Q6, the PNP triode Q6 is conducted, the collector electrode output high level enters the positive power input end of the relay K, and as the negative power input end of the relay K is communicated with the 4 pins of the stabilized voltage power supply U1, at the moment, the relay K can be electrified to close the control power supply input end and the normally open contact end; because the relay K controls the power input end to be communicated with the 3 feet of the stabilized voltage power supply U1 at the moment, the positive power input ends of the buzzer B and the short message module U2 are connected with the normally open contact end of the relay K, and the negative power input ends of the buzzer B and the short message module U2 are communicated with the 4 feet of the stabilized voltage power supply U1, at the moment, the buzzer B and the short message module U2 can be electrified to work; the sounder B sends out a loud prompting sound after being electrified, and prompts a simulation detection area that combustible gas leaks on site, and the first low-level signal input end D of the short message module U2 is connected with the negative power supply input end of the short message module U2 automatically sends a short message to a mobile phone at the hand of a student after being electrified, so that the student can know that the combustible gas leaks in the simulation detection area after receiving the short message (in actual conditions, the content sent by the short message module U2 informs a user who is not at a remote site). In fig. 2, NPN transistors Q1, Q3, and Q5 are model 9014; model numbers of PNP triode Q2, Q4 and Q6 are 9012; relay K is a DC4100 miniature relay; the resistances of the resistors R1, R2, R3, R4, R5 and R6 are 20K, 47K, 100K, 47K, 20 omega and 47K respectively; the specification of the adjustable resistor RP is 8M; thermistor RT model is NTC 103D. This is novel because student's ability manual operation to the working process demonstration of thing networking detection alarm device when can directly perceivedly obtain the simulation and leak, conflagration, natural gas leak, and then can reach better learning effect, and can improve mr's teaching efficiency. Based on the above, so this novel application prospect that has.

Having shown and described the fundamental principles and essential features of the invention, and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A novel Internet of things training station comprises an Internet of things training station body, a three-core power plug, a three-core power socket, a voltage-stabilized power supply, a short message module and a buzzer, and is characterized by further comprising a water leakage demonstration probe, a fire disaster demonstration probe, a natural gas leakage demonstration probe and a control circuit; the three-core power socket, the stabilized voltage power supply, the short message module, the buzzer and the control circuit are arranged in an element box, the element box is arranged on the training platform body, the front ends of three jacks of the three-core power socket are positioned outside the element box, and grooves are formed in the side ends of the element box; the positive and negative pole power output ends of the voltage-stabilized power supply are respectively connected with two wiring ends of the three-core power socket, the control power input end and the negative power input end of the control circuit through wires, the control circuit power output end, the voltage-stabilized circuit negative power output end, the signal sounder and the short message module power input end are respectively connected through wires, and the positive power input end of the control circuit is connected with the third wiring end of the three-core power socket through wires; the water leakage demonstration probe, the fire disaster demonstration probe and the natural gas leakage demonstration probe are respectively arranged in a shell, the water leakage demonstration probe, the fire disaster demonstration probe and the natural gas leakage demonstration probe are respectively provided with a three-core power plug, and the three-core power plugs of the water leakage demonstration probe, the fire disaster demonstration probe and the natural gas leakage demonstration probe are respectively inserted into the three-core power socket.

2. The novel internet of things training platform as claimed in claim 1, wherein the shells for installing the water leakage demonstration probe, the fire demonstration probe and the natural gas leakage demonstration probe are uniform in size, the side end of each shell is provided with a protrusion, the length of the rear end of each protrusion is greater than that of the rear end of each shell, and the outer diameter of each protrusion is smaller than that of the groove of the element box.

3. The novel internet of things training station of claim 1, wherein the voltage-stabilized power supply is an alternating current 220V-to-direct current switching power supply module, the short message module is a short message alarm module, a negative power supply input end of the short message module is connected with one of low-level trigger signal input ends through a lead, and the beeper is an active continuous sound alarm beeper.

4. A novel Internet of things training platform as claimed in claim 1, wherein the water leakage demonstration probe comprises a resistor, a metal sheet, an NPN triode and a PNP triode, the resistor, the NPN triode and the PNP triode are mounted on a circuit board and connected through a circuit board wiring, the upper end of a first three-core power plug is fixedly mounted at the lower end of the circuit board, the circuit board is mounted at the lower end in a first shell, the lower end of the three-core power plug is positioned at the outer side of the shell, the third terminal of the three-core power plug is connected with the collector of the PNP triode, the first terminal of the three-core power plug is respectively connected with one end of the first resistor and the emitter of the PNP triode, the second terminal of the three-core power plug is connected with the emitter of the NPN triode, the collector of the NPN triode is connected with one end of the second resistor, the other end of, the two metal sheets are respectively connected with the other end of the first resistor and the base electrode of the NPN triode through a lead, and the two metal sheets are positioned at the outer end of the shell.

5. A novel Internet of things training platform as claimed in claim 1, wherein the fire demonstration probe comprises a negative temperature coefficient thermistor, an NPN triode, a PNP triode, an adjustable resistor, a resistor, an NPN triode, a PNP triode, an adjustable resistor and a resistor which are mounted on the circuit board and connected by the circuit board, the upper end of a second three-core power plug is fixedly mounted at the lower end of the circuit board, the circuit board is mounted at the lower end of the second shell, the lower end of the three-core power plug is located at the outer side of the lower end of the shell, the third terminal of the three-core power plug is connected with the collector of the PNP triode, the first terminal of the three-core power plug is connected with the emitter of the PNP triode, the second terminal of the three-core power plug is connected with the emitter of the NPN triode, the collector of, one end of the adjustable resistor is connected with the base electrode of the NPN triode, two ends of the thermistor are respectively connected with the other end of the adjustable resistor and the first wiring end of the three-core power plug through a conducting wire, and the thermistor is located at the outer end of the shell.

6. A novel Internet of things training platform as claimed in claim 1, wherein the natural gas leakage demonstration probe comprises an NPN triode, a PNP triode, a resistor and a gas-sensitive device, which are connected through a circuit board, the upper end of a third three-core power plug is fixedly arranged at the lower end of the circuit board, the circuit board is arranged at the lower end in a third shell, the lower end of the three-core power plug is arranged at the outer side of the lower end of the shell, the model of the gas-sensitive device is QM-N5, the third terminal of the three-core power plug is connected with the collector of the PNP triode, the first terminal of the three-core power plug is connected with the emitter of the PNP triode, one end of the first resistor and the first measuring electrode of the gas-sensitive device, the other end of the first resistor is connected with the positive power input end of the gas-sensitive device, the second terminal of the, the second measuring electrode of the gas-sensitive device is connected with one end of a second resistor, the other end of the second resistor is connected with the base electrode of the NPN triode, the collector electrode of the NPN triode is connected with one end of a third resistor, the other end of the third resistor is connected with the base electrode of the PNP triode, and the front end detecting head of the gas-sensitive device is positioned on the rear side of the opening of the shell.

7. A novel internet of things training station as claimed in claim 1, wherein the control circuit is a relay.