CN218122497U - Public toilet peculiar smell gas detection terminal - Google Patents

Public toilet peculiar smell gas detection terminal Download PDF

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Publication number
CN218122497U
CN218122497U CN202222342591.3U CN202222342591U CN218122497U CN 218122497 U CN218122497 U CN 218122497U CN 202222342591 U CN202222342591 U CN 202222342591U CN 218122497 U CN218122497 U CN 218122497U
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electrically connected
pin
chip
module
mcu
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李霄柏
牟少峰
陈玉明
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Weifang City Management Administrative Law Enforcement Detachment
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Weifang City Management Administrative Law Enforcement Detachment
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract

The utility model discloses a public toilet peculiar smell gas detection terminal, which relates to the technical field of gas detection equipment and comprises an MCU module, wherein the MCU module is electrically connected with a smell detection module for detecting the public toilet peculiar smell gas, and the MCU module is also electrically connected with an NB communication module for uploading data acquired by the smell detection module to a remote platform; also comprises a module for providing power for the MCU module the power supply module is used for supplying power to the NB communication module and the smell detection module; the odor detection module comprises an ammonia gas sensor S1 and a hydrogen sulfide sensor S2. The utility model discloses public latrine peculiar smell gas detection terminal can pass the testing result on to the management platform to realized the long-range centralized, the unified management to public latrine, be favorable to promoting the digital development in city.

Description

Public toilet peculiar smell gas detection terminal
Technical Field
The utility model relates to a gaseous check out test set technical field, in particular to public latrine peculiar smell gas detection terminal.
Background
The public toilet is a toilet for public use in public places, and is very frequently used, and excrement generally carries gases with strong tastes such as ammonia gas and hydrogen sulfide, so that peculiar smell in the public toilet is large, and particularly in the public toilet which is not cleaned timely, the peculiar smell is hard to bear, the gases such as ammonia gas and hydrogen sulfide are not only strong in smell, but also can cause injury to human bodies when the two gases reach certain concentrations, so that at present, many cities are provided with detection devices for the gases such as ammonia gas and hydrogen sulfide, and when the gases with the peculiar smell reach the set concentrations, the public toilet can give an alarm, and managers of the public toilet can carry out treatments such as air exhaust, cleaning and the like to ensure the freshness of the air in the public toilet.
SUMMERY OF THE UTILITY MODEL
To above defect, the utility model aims at providing a gaseous testing terminal of public latrine peculiar smell, this gaseous testing terminal of public latrine peculiar smell can be with transmitting the management platform on the testing result, can realize the long-range concentration to the public latrine, unified management, is favorable to promoting the digital development in city.
In order to realize the purpose, the technical scheme of the utility model is that:
a public toilet peculiar smell gas detection terminal comprises an MCU module, wherein the MCU module is electrically connected with a smell detection module for detecting the public toilet peculiar smell gas, and is also electrically connected with an NB communication module for uploading data acquired by the smell detection module to a remote platform; also comprises a module for providing power for the MCU module the power supply module is used for supplying power to the NB communication module and the smell detection module; the odor detection module comprises an ammonia gas sensor S1 and a hydrogen sulfide sensor S2.
The MCU module comprises an MCU chip U8, and the MCU chip U8 is electrically connected with the NB communication module, the odor detection module and the power module; the model of the MCU chip U8 is STM32L053R8T6.
The first pin TX and the second pin RX of the ammonia gas sensor S1 are respectively and electrically connected with a forty-second pin PA9 and a forty-third pin PA10 of the MCU chip U8; and a first pin TX and a second pin RX of the hydrogen sulfide sensor S2 are respectively and electrically connected with a sixteenth pin PA2 and a seventeenth pin PA3 of the MCU chip U8.
The NB communication module comprises an NB communication chip U9, the NB communication chip U9 is electrically connected with a SIM card seat J7, and an SIM card is inserted in the SIM card seat J7; the NB communication chip U9 is electrically connected with the MCU chip U8 through a level conversion circuit and a switch circuit; the model of the NB communication chip U9 is ME3616.
The switching circuit comprises a triode Q2, a collector of the triode Q2 is electrically connected with a nineteenth pin POWER _ ON of the NB communication chip U9, an emitter of the triode Q2 is electrically connected with GND, a base of the triode Q2 is electrically connected with a resistor R14, and the resistor R14 is electrically connected with a twenty-first pin PA5 of the MCU chip U8; the level switching circuit comprises a triode Q1, a base electrode of the triode Q1 is electrically connected with a resistor R12, the resistor R12 is electrically connected with a 1.8V power supply, an emitting electrode of the triode Q1 is electrically connected with a ninth pin UART1_ TXD of the NB communication chip U9, a collecting electrode of the triode Q1 is electrically connected with a twenty-fifth pin PC5 and a resistor R13 of the MCU chip U8, and the resistor R13 is electrically connected with a power supply VCC; the level conversion circuit further comprises a voltage stabilizing diode D6, wherein the positive electrode of the voltage stabilizing diode D6 is electrically connected with a tenth pin UART1_ RXD and a resistor R11 of the NB communication chip U9, the resistor R11 is electrically connected with a 1.8V power supply, and the negative electrode of the voltage stabilizing diode D6 is electrically connected with a twenty-fourth pin PC4 of the MCU chip U8.
The type of the SIM card holder J7 is KF-016, and the first pin SIMVCC, the second pin SIMRST, the third pin SIMCLK and the sixth pin SIMDATA of the SIM card holder J7 are electrically connected to the fifteenth pin USIM _ VCC, the twelfth pin USIM _ RESET, the thirteenth pin USIM _ CLK and the fourteenth pin USIM _ DATA of the NB communication chip U9, respectively, and are also electrically connected to the ESD protection chip U10.
The power module comprises a first voltage conversion circuit and a second voltage conversion circuit, the first voltage conversion circuit comprises a voltage reduction chip U6, the model of the voltage reduction chip U6 is XL-1509, a first pin VIN of the voltage reduction chip U6 is electrically connected with a +12V power supply, a second pin OUT of the voltage reduction chip U6 is electrically connected with a cathode of a voltage stabilizing diode D5 and an inductor L2, an anode of the voltage stabilizing diode D5 is electrically connected with a GND and one end of a capacitor C30, the inductor L2 is electrically connected with the other end of the capacitor C30 and an anode of a capacitor C32 and outputs 5V voltage, and a cathode of the capacitor C32 is electrically connected with the GND; the second voltage conversion circuit comprises a voltage reduction and stabilization chip U7, a third pin IN of the voltage reduction and stabilization chip U7 is electrically connected with a 5V power supply, and a second pin OUT and a fourth pin OUT of the voltage reduction and stabilization chip U7 are IN short circuit and output 3.3V voltage.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
because the utility model discloses public lavatory peculiar smell gas detection terminal includes MCU module, MCU module electricity is connected with smell detection module, MCU module still electricity is connected with NB communication module; the device also comprises a power module for supplying power to the MCU module, the NB communication module and the smell detection module. The smell detection module is used for gathering the ammonia in the public latrine and the concentration of hydrogen sulfide gas body, and give the MCU module with the data transmission who gathers, the MCU module sends the data transmission that received smell detection module gathered for NB communication module, NB communication module uploads the data that received MCU module sent for the management platform, thereby make municipal administration personnel can know the air condition in each public latrine, realized the long-range concentration to the public latrine, unified management, be favorable to promoting the development of city digitization.
To sum up, the utility model discloses public latrine peculiar smell gas detection terminal has solved among the prior art and can't carry out technical problem such as long-range centralized management to the public latrine, the utility model discloses public latrine peculiar smell gas detection terminal can upload the testing result to the management platform to realized the long-range centralized, the unified management to the public latrine, be favorable to promoting the digital development in city.
Drawings
FIG. 1 is a block diagram of the structure of the odor detection terminal for public toilets according to the present invention;
FIG. 2 is a circuit schematic of the MCU module of FIG. 1;
FIG. 3 is a circuit schematic of an NB communication chip of the NB communication module of FIG. 1;
fig. 4 is a circuit schematic diagram of a SIM card holder of the NB communication module of fig. 1;
FIG. 5 is a schematic circuit diagram of the ammonia gas detection sensor of the odor detection module of FIG. 1;
FIG. 6 is a schematic circuit diagram of the hydrogen sulfide detection sensor of the odor detection module of FIG. 1;
FIG. 7 is a circuit schematic of a first voltage conversion circuit of the power supply module of FIG. 1;
fig. 8 is a circuit schematic of a second voltage conversion circuit of the power supply module of fig. 1.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
All the orientations referred to in the present specification are based on the orientations shown in the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.
As shown in fig. 1, a public toilet odor gas detection terminal based on NB-IOT (Narrow Band Internet of Things), includes an MCU (micro controller Unit) module electrically connected with an odor detection module and an NB communication module, and the terminal further includes a power module electrically connected with the MCU module, the NB communication module and the odor detection module for providing power to the MCU module, the NB communication module and the odor detection module.
As shown in fig. 1 and 2, the MCU module is configured to read data collected by the odor detection module, process and package the read data, and then transmit the data to the management platform server by communicating with the NB communication module. The MCU module of the embodiment comprises an MCU chip U8 and a peripheral circuit thereof, wherein the MCU chip U8 is electrically connected with the NB communication module, the smell detection module and the power module. The model of the MCU chip U8 is STM32L053R8T6 preferably in the embodiment. The twenty-first pin PA5, the twenty-fourth pin PC4 and the twenty-fifth pin PC5 of the MCU chip U8 are electrically connected with the NB communication module, the sixteenth pin PA2, the seventeenth pin PA3, the forty-second pin PA9 and the forty-third pin PA10 of the MCU chip U8 are electrically connected with the odor detection module, and each power supply pin of the MCU chip U8 is electrically connected with the power supply module. The peripheral circuit of MCU chip U8 includes clock circuit, memory circuit and filter circuit etc. because of these circuits are conventional technical means, not the utility model discloses an innovation point, so do not detail again here.
As shown jointly in fig. 1, fig. 2, fig. 3 and fig. 4, NB communication module communicates with MCU chip U8, and the data that will smell detection module gather are uploaded to the remote management platform through communicating with MCU chip U8 to the air condition in each public latrine can in time be known to municipal administration personnel. The NB communication module comprises an NB communication chip U9, the NB communication chip U9 is electrically connected with a SIM card socket J7, and a SIM card is inserted in the SIM card socket J7.
As shown in fig. 2, 3, and 4, the NB communication chip U9 in the present embodiment is of model number ME3616. The ninth pin UART1_ TXD and the tenth pin UART1_ RXD of the NB communication chip U9 are electrically connected to the twenty-fifth pin PC5 and the twenty-fourth pin PC4 of the MCU chip U8, respectively, through a level shifter circuit, and the nineteenth pin POWER _ ON of the NB communication chip U9 is electrically connected to the twenty-first pin PA5 of the MCU chip U8, through a switch circuit. A twelfth pin USIM _ RESET of the NB communication chip U9 is electrically connected with a resistor R15, and the resistor R15 is electrically connected with a second pin SIMRST of the SIM card socket J7; a resistor R16 is electrically connected to a thirteenth pin USIM _ CLK of the NB communication chip U9, and the resistor R16 is electrically connected to a third pin SIMCLK of the SIM card socket J7; a resistor R17 is electrically connected to a fourteenth pin USIM _ DATA of the NB communication chip U9, and the resistor R17 is electrically connected to a sixth pin SIMDATA of the SIM card socket J7; a fifteenth pin USIM _ VCC of the NB communication chip U9 is electrically connected to the first pin SIMVCC of the SIM card holder J7.
As shown in fig. 2 and fig. 3 together, the switching circuit includes a transistor Q2, a collector of the transistor Q2 is electrically connected to a nineteenth pin POWER _ ON of the NB communication chip U9, an emitter of the transistor Q2 is electrically connected to the ground GND, a base of the transistor Q2 is electrically connected to a resistor R14, the resistor R14 is electrically connected to a twenty-first pin PA5 of the MCU chip U8, and a capacitor C48 is electrically connected between the collector and the emitter of the transistor Q2.
As shown in fig. 2 and fig. 3, the level shift circuit includes a transistor Q1, a base of the transistor Q1 is electrically connected to a resistor R12, the resistor R12 is electrically connected to a 1.8V power supply, and the 1.8V power supply is output from a twentieth pin VCC1V8_ OUT of the NB communication chip U9; an emitting electrode of the triode Q1 is electrically connected with a ninth pin UART1_ TXD of the NB communication chip U9, a collecting electrode of the triode Q1 is electrically connected with a twenty-fifth pin PC5 and a resistor R13 of the MCU chip U8, and the resistor R13 is electrically connected with a power VCC. The level conversion circuit further comprises a voltage stabilizing diode D6, the anode of the voltage stabilizing diode D6 is electrically connected with a tenth pin UART1_ RXD and a resistor R11 of the NB communication chip U9, the resistor R11 is electrically connected with a 1.8V power supply, and the cathode of the voltage stabilizing diode D6 is electrically connected with a twenty-fourth pin PC4 of the MCU chip U8. The twenty-seventh pin MAIN _ ANT of the NB communication chip U9 is electrically connected to the second pin of the antenna J6, and the first pin and the third pin of the antenna J6 are shorted and electrically connected to the ground GND.
As shown in fig. 3 and 4, the SIM card holder J7 is KF-016. The first pin SIMVCC of the SIM card holder J7 is electrically connected to the fifth pin of the ESD protection chip U10, one end of the capacitor C44, one end of the capacitor C43, and the fifteenth pin USIM _ VCC of the NB communication chip U9, and the other end of the capacitor C44 and the other end of the capacitor C43 are electrically connected to GND. The second pin SIMRST of the SIM card holder J7 is electrically connected to the fourth pin of the ESD protection chip U10, one end of the capacitor C45, and the resistor R15 at the same time, and the other end of the capacitor C45 is electrically connected to the ground GND. The third pin SIMCLK of the SIM card holder J7 is electrically connected to the first pin of the ESD protection chip U10, one end of the capacitor C47, and the resistor R16, and the other end of the capacitor C47 is electrically connected to the ground GND. The sixth pin SIMDATA of the SIM card holder J7 is electrically connected to the third pin of the ESD protection chip U10, one end of the capacitor C46, and the resistor R17, and the other end of the capacitor C46 is electrically connected to the ground GND.
As shown in fig. 1, 2, 5 and 6, the odor detection module is used for detecting odor in a public toilet, and includes an ammonia sensor S1 and a hydrogen sulfide sensor S2. The first pin TX of the ammonia sensor S1 is electrically connected to the forty-two pin PA9 of the MCU chip U8, and the second pin RX of the ammonia sensor S1 is electrically connected to the forty-third pin PA10 of the MCU chip U8. A first pin TX of the hydrogen sulfide sensor S2 is electrically connected to a sixteenth pin PA2 of the MCU chip U8, and a second pin RX of the hydrogen sulfide sensor S2 is electrically connected to a seventeenth pin PA3 of the MCU chip U8.
As shown collectively in fig. 1, 7 and 8, the power supply module converts a 12V voltage or a 24V voltage into a 5V voltage and a 3.3V voltage for supplying power to the MCU module, the NB communication module and the scent detection module. The power module includes a first voltage conversion circuit and a second voltage conversion circuit.
As shown in FIG. 7, the first voltage conversion circuit includes a buck chip U6, the model of the buck chip U6 is XL-1509. The first pin VIN of the voltage-reducing chip U6 is electrically connected to one end of the capacitor C25 and the 12V power supply at the same time, and the other end of the capacitor C25 is electrically connected to the ground GND. The second pin OUT of the voltage reduction chip U6 is simultaneously and electrically connected with the cathode of the voltage stabilizing diode D5 and one end of the inductor L2, the anode of the voltage stabilizing diode D5 is electrically connected with the GND and one end of the capacitor C30, the other end of the inductor L2 is simultaneously and electrically connected with the other end of the capacitor C30, the anode of the capacitor C32 and the third pin FEEDBACK of the voltage reduction chip U6, 5V voltage is output, and the cathode of the capacitor C32 is electrically connected with the GND. The fourth pin ON/OFF, the fifth pin GND, the sixth pin GND, the seventh pin GND and the eighth pin GND of the voltage reduction chip U6 are short-circuited and electrically connected to the ground GND.
As shown in fig. 8, the second voltage converting circuit includes a buck regulator chip U7, and the model of the buck regulator chip U7 is AMS1117-3.3. The third pin IN of step-down steady voltage chip U7 is connected 5V power, and the second pin OUT and the fourth pin OUT short circuit of step-down steady voltage chip U7 and output 3.3V voltage (being power VCC), the one end of electric connection electric capacity C28 and the one end of electric capacity C29 simultaneously, the first pin GND and the ground GND of step-down steady voltage chip U7 are connected to the other end of electric capacity C28 and the one end of electric capacity C29 electricity.
The utility model discloses gaseous detection terminal's of public latrine peculiar smell ammonia sensor and hydrogen sulfide sensor are used for detecting the concentration of ammonia and hydrogen sulfide gas body in the public latrine, and give the MCU module with the data transmission who gathers to the data transmission who gathers of MCU module, NB communication module passes to the management platform on the data that received MCU module sent, thereby make municipal administration personnel can know the air condition in each public latrine, realized the long-range concentration to the public latrine, unified management, be favorable to promoting the development of city digitization. Simultaneously the utility model discloses still can realize regularly detecting the function of regularly uploading data through the program control of MCU module, equipment is in the dormant state when not detecting and uploading, and the energy consumption is very low.
The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.

Claims (7)

1. The public toilet peculiar smell gas detection terminal is characterized by comprising an MCU module, wherein the MCU module is electrically connected with a smell detection module for detecting the public toilet peculiar smell gas, and is also electrically connected with an NB communication module for uploading data acquired by the smell detection module to a remote platform; also comprises a module for providing power for the MCU module the power supply module is used for supplying power to the NB communication module and the smell detection module; the odor detection module comprises an ammonia gas sensor S1 and a hydrogen sulfide sensor S2.
2. The public toilet peculiar smell gas detection terminal according to claim 1, wherein the MCU module comprises an MCU chip U8, the MCU chip U8 is electrically connected with the NB communication module, the smell detection module and the power supply module; the model of the MCU chip U8 is STM32L053R8T6.
3. The public toilet peculiar smell gas detection terminal according to claim 2, wherein the first pin TX and the second pin RX of the ammonia gas sensor S1 are electrically connected to a forty-second pin PA9 and a forty-third pin PA10 of the MCU chip U8, respectively; and a first pin TX and a second pin RX of the hydrogen sulfide sensor S2 are respectively and electrically connected with a sixteenth pin PA2 and a seventeenth pin PA3 of the MCU chip U8.
4. The public toilet peculiar smell gas detection terminal according to claim 2, wherein the NB communication module includes an NB communication chip U9, the NB communication chip U9 is electrically connected with a SIM card socket J7, and a SIM card is inserted into the SIM card socket J7; the NB communication chip U9 is electrically connected with the MCU chip U8 through a level conversion circuit and a switch circuit; the model of the NB communication chip U9 is ME3616.
5. The public toilet odor gas detection terminal according to claim 4,
the switching circuit comprises a triode Q2, a collector of the triode Q2 is electrically connected with a nineteenth pin POWER _ ON of the NB communication chip U9, an emitter of the triode Q2 is electrically connected with a GND, a base of the triode Q2 is electrically connected with a resistor R14, and the resistor R14 is electrically connected with a twenty-first pin PA5 of the MCU chip U8;
the level switching circuit comprises a triode Q1, a base electrode of the triode Q1 is electrically connected with a resistor R12, the resistor R12 is electrically connected with a 1.8V power supply, an emitting electrode of the triode Q1 is electrically connected with a ninth pin UART1_ TXD of the NB communication chip U9, a collecting electrode of the triode Q1 is electrically connected with a twenty-fifth pin PC5 and a resistor R13 of the MCU chip U8, and the resistor R13 is electrically connected with a power supply VCC;
the level conversion circuit further comprises a voltage stabilizing diode D6, wherein the positive electrode of the voltage stabilizing diode D6 is electrically connected with a tenth pin UART1_ RXD and a resistor R11 of the NB communication chip U9, the resistor R11 is electrically connected with a 1.8V power supply, and the negative electrode of the voltage stabilizing diode D6 is electrically connected with a twenty-fourth pin PC4 of the MCU chip U8.
6. The public toilet peculiar smell gas detection terminal according to claim 5, wherein the type of the SIM card holder J7 is KF-016, and the first pin SIMVCC, the second pin SIMRST, the third pin SIMCLK and the sixth pin SIMDATA of the SIM card holder J7 are electrically connected with the fifteenth pin USIM _ VCC, the twelfth pin USIM _ RESET, the thirteenth pin USIM _ CLK and the fourteenth pin USIM _ DATA of the NB communication chip U9 respectively, and are also electrically connected with the ESD protection chip U10.
7. The public toilet odor gas detection terminal according to claim 1, wherein the power module comprises a first voltage conversion circuit and a second voltage conversion circuit,
the first voltage conversion circuit comprises a voltage reduction chip U6, the model of the voltage reduction chip U6 is XL-1509, a first pin VIN of the voltage reduction chip U6 is electrically connected with a +12V power supply, a second pin OUT of the voltage reduction chip U6 is electrically connected with a cathode of a voltage stabilizing diode D5 and an inductor L2, an anode of the voltage stabilizing diode D5 is electrically connected with a GND and one end of a capacitor C30, the inductor L2 is electrically connected with the other end of the capacitor C30 and an anode of a capacitor C32 and outputs 5V voltage, and a cathode of the capacitor C32 is electrically connected with the GND;
the second voltage conversion circuit comprises a voltage reduction and stabilization chip U7, a third pin IN of the voltage reduction and stabilization chip U7 is electrically connected with a 5V power supply, and a second pin OUT and a fourth pin OUT of the voltage reduction and stabilization chip U7 are IN short circuit and output 3.3V voltage.
CN202222342591.3U 2022-09-02 2022-09-02 Public toilet peculiar smell gas detection terminal Active CN218122497U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222342591.3U CN218122497U (en) 2022-09-02 2022-09-02 Public toilet peculiar smell gas detection terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222342591.3U CN218122497U (en) 2022-09-02 2022-09-02 Public toilet peculiar smell gas detection terminal

Publications (1)

Publication Number Publication Date
CN218122497U true CN218122497U (en) 2022-12-23

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Application Number Title Priority Date Filing Date
CN202222342591.3U Active CN218122497U (en) 2022-09-02 2022-09-02 Public toilet peculiar smell gas detection terminal

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CN (1) CN218122497U (en)

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