CN111765920A - Temperature and humidity detector and explosion-proof lighting system - Google Patents
Temperature and humidity detector and explosion-proof lighting system Download PDFInfo
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- CN111765920A CN111765920A CN202010538478.5A CN202010538478A CN111765920A CN 111765920 A CN111765920 A CN 111765920A CN 202010538478 A CN202010538478 A CN 202010538478A CN 111765920 A CN111765920 A CN 111765920A
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- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000003990 capacitor Substances 0.000 claims description 24
- 238000006073 displacement reaction Methods 0.000 claims description 14
- ZHVOBYWXERUHMN-KVJKMEBSSA-N 3-[(3s,5r,8r,9s,10s,13s,14s,17s)-10,13-dimethyl-3-[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-17-yl]-2h-furan-5-one Chemical compound O([C@@H]1C[C@H]2CC[C@@H]3[C@@H]([C@]2(CC1)C)CC[C@]1([C@H]3CC[C@@H]1C=1COC(=O)C=1)C)[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O ZHVOBYWXERUHMN-KVJKMEBSSA-N 0.000 claims description 4
- 102100026139 DNA damage-inducible transcript 4 protein Human genes 0.000 claims description 4
- 101000912753 Homo sapiens DNA damage-inducible transcript 4 protein Proteins 0.000 claims description 4
- 101100085126 Rattus norvegicus Ptgr1 gene Proteins 0.000 claims description 4
- 101100443250 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) DIG1 gene Proteins 0.000 claims description 4
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0435—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by remote control means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
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Abstract
The invention discloses a temperature and humidity detector and an explosion-proof lighting system, wherein the temperature and humidity detector comprises: the temperature and humidity detection module is used for detecting temperature and humidity information of an explosion-proof place; an explosion-proof lamp is arranged in the explosion-proof place; the control module is connected with the temperature and humidity detection module and used for transmitting the temperature and humidity information to the first radio frequency communication module and controlling the first radio frequency communication module to send the temperature and humidity information out; and the first radio frequency communication module is connected with the control module and used for generating radio frequency waves carrying the temperature and humidity information based on the temperature and humidity information transmitted by the control module and transmitting the radio frequency waves to a gateway of the explosion-proof lighting system. The temperature and humidity information of the explosion-proof place can be detected, and meanwhile, the temperature and humidity information is remotely transmitted to the gateway of the explosion-proof lighting system, so that the linkage with the explosion-proof lighting system is realized, and the management of the explosion-proof lighting system by utilizing the temperature and humidity detection information is facilitated.
Description
Technical Field
The invention relates to the technical field of explosion-proof illumination, in particular to a temperature and humidity detector and an explosion-proof illumination system with the temperature and humidity detector.
Background
The explosion-proof lamp is an illumination lamp with explosion-proof performance, and is generally applied to an explosion-proof place with inflammable and explosive objects and risks as illumination. Due to the environment specificity of the explosion-proof place, it is more important to ensure the good working performance of the explosion-proof lamp, and the guarantee of the working performance of the explosion-proof lamp depends on the specific environment of the explosion-proof place, such as the temperature condition and the humidity condition of the explosion-proof place, and the working condition and the service life of the explosion-proof lamp can be influenced by improper temperature and humidity.
The temperature and humidity detection part in the prior art has the following problems: 1. the detected temperature and humidity cannot be remotely transmitted, and the method can only be applied to non-explosion-proof places; 2. the temperature and humidity detection part is not linked with the explosion-proof lighting system, so that the explosion-proof lighting system is not managed conveniently by using temperature and humidity detection information.
How to provide one kind can teletransmission humiture information, the humiture detection mode that simultaneously can link with explosion-proof lighting system, does not have effectual solution yet among the prior art at present.
Disclosure of Invention
The invention provides a temperature and humidity detector which can remotely transmit temperature and humidity information and can be linked with an explosion-proof lighting system, and an explosion-proof lighting system with the temperature and humidity detector.
The invention adopts a technical means that: provided is a temperature and humidity detector including:
the temperature and humidity detection module is used for detecting temperature and humidity information of an explosion-proof place; an explosion-proof lamp is arranged in the explosion-proof place;
the control module is connected with the temperature and humidity detection module and used for transmitting the temperature and humidity information to the first radio frequency communication module and controlling the first radio frequency communication module to send the temperature and humidity information out; and
the first radio frequency communication module is connected with the control module and used for generating radio frequency waves carrying the temperature and humidity information based on the temperature and humidity information transmitted by the control module and transmitting the radio frequency waves to a gateway of the explosion-proof lighting system; the working frequency range of the radio frequency wave is 420MHz to 440MHz, and the central frequency is 433 MHz.
The invention adopts another technical means that: there is provided an explosion-proof lighting system comprising:
an explosion-proof lamp configured in the explosion-proof place;
the temperature and humidity detector; the temperature and humidity detector is arranged in the explosion-proof place; and
the gateway is provided with a second radio frequency communication module and is connected with the temperature and humidity detector through the second radio frequency communication module; and the temperature and humidity information is uploaded to the gateway through the first radio frequency communication module and the second radio frequency communication module.
Due to the adoption of the technical scheme, the temperature and humidity detector and the explosion-proof lighting system provided by the invention can detect temperature and humidity information of an explosion-proof place, and simultaneously remotely transmit the temperature and humidity information to a gateway of the explosion-proof lighting system in a 433 radio frequency communication mode, so that linkage with the explosion-proof lighting system is realized, and management of the explosion-proof lighting system by utilizing the temperature and humidity detection information is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a block diagram of an embodiment of a temperature and humidity sensor;
FIG. 2 is a block diagram of an embodiment of a temperature and humidity sensor;
fig. 3 is a block diagram showing the structure of the explosion-proof lighting system in one embodiment.
FIG. 4 is a schematic circuit diagram of a temperature and humidity detection module in one embodiment;
FIG. 5 is a circuit schematic of a control module in one embodiment;
FIG. 6 is a circuit schematic of a first RF communication module in one embodiment;
FIG. 7 is a circuit schematic of a power supply module in one embodiment;
fig. 8 is a circuit schematic of a display module in one embodiment.
In the figure: 1. temperature and humidity detector, 2, explosion-proof place, 3, explosion-proof lamps and lanterns, 4, gateway, 5, control terminal, 11, temperature and humidity detection module, 12, control module, 13, first radio frequency communication module, 14, power module, 15, display module, 41, second radio frequency communication module.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
The invention provides a temperature and humidity detector 1, as shown in fig. 1, in an embodiment, the temperature and humidity detector 1 may include: the temperature and humidity detection device comprises a temperature and humidity detection module 11, a control module 12 and a first radio frequency communication module 13. The temperature and humidity detection module 11 is used for detecting temperature and humidity information of the explosion-proof place 2; an explosion-proof lamp 3 is arranged in the explosion-proof place 2. The control module 12 is connected to the temperature and humidity detection module 11, and is configured to transmit the temperature and humidity information to the first radio frequency communication module 13, and control the first radio frequency communication module 13 to send the temperature and humidity information out. The first radio frequency communication module 13 is connected to the control module 12, and is configured to generate, based on the temperature and humidity information transmitted by the control module 12, radio frequency waves carrying the temperature and humidity information and send the radio frequency waves to the gateway 4 of the explosion-proof lighting system. The working frequency range of the radio frequency wave is 420MHz to 440MHz, and the central frequency is 433 MHz. Referring to fig. 1, a temperature and humidity detector 1 and an explosion-proof lamp 3 are both disposed in the explosion-proof place 2, in this embodiment, temperature and humidity information of the explosion-proof place 2 is detected by a temperature and humidity detection module 11, and meanwhile, the temperature and humidity information is remotely transmitted to a gateway 4 of the explosion-proof lighting system through a 433 radio frequency communication mode by a first radio frequency communication module 13, so that linkage with the explosion-proof lighting system is realized, and management of the explosion-proof lighting system is facilitated by the temperature and humidity detection information, for example, when the temperature information or the humidity information in the explosion-proof place 2 is not within a preset range, the working state of the explosion-proof lamp 3 can be adjusted, so that.
In an embodiment, referring to fig. 2, the temperature and humidity detector 1 may further include a power supply module 14, where the power supply module 14 is configured to provide a working power supply for the temperature and humidity detector 1, and specifically, the power supply module 14 may be connected to the control module 12, the temperature and humidity detection module 11, and the first radio frequency communication module 13 so as to supply power to the modules.
In an embodiment, referring to fig. 2, the temperature and humidity detector 1 may further include a display module 15, where the display module 15 is connected to the control module 12 and is configured to display the temperature and humidity information transmitted by the control module 12. The control module 12 is further configured to transmit the temperature and humidity information to the display module 15 and control the display module 15 to display the temperature and humidity information. The power supply module 14 may also be connected to the display module 15 to supply power to the display module 15. Through the configuration of the display module 15, the temperature and humidity information of the explosion-proof place 2 can be conveniently obtained visually, clearly and in real time.
In one embodiment, as shown with reference to fig. 5, the control module 12 may include: microcontroller U1, model SAMD20G17, although other microcontrollers, processors, etc. may be used.
In an embodiment, referring to fig. 4 and 5, the temperature and humidity detecting module 11 may include: the temperature and humidity sensor TH1 is SHT31, the resistor R6 is connected with the resistor R7, and the resistor R8 is connected with the resistor R7; one end of the resistor R6 is connected with the power supply module 14, and the other end of the resistor R6 is connected with an SCL pin of the temperature and humidity sensor TH 1; one end of the resistor R7 is connected with the power supply module 14, and the other end of the resistor R7 is connected with an SDA pin of the temperature and humidity sensor TH 1; one end of the resistor R8 is connected with an ADDR pin of the temperature and humidity sensor TH1, and the other end of the resistor R8 and a GND pin of the temperature and humidity sensor TH1 are both grounded.
A PA18 pin of the microcontroller U1 is connected with an SCL pin of the temperature and humidity sensor TH 1; and a PA19 pin of the microcontroller U1 is connected with an SDA pin of the temperature and humidity sensor TH 1.
In one embodiment, as shown in fig. 5 and 6, the first radio frequency communication module 13 may include: RF433 transceiver module P5; an RF _ TX pin of an RF433 transceiver module P5 is connected with a PB10 pin of the microcontroller U1; the RF _ RX pin of the RF433 transceiver module P5 is connected to the PB11 pin of the microcontroller U1. The RF _ RET pin of the RF433 transceiver module P5 is connected to the PA11 pin of the microcontroller U1.
In one embodiment, as shown with reference to fig. 7, the power supply module 14 may include: a DC/DC converter U3 with the model number of MP2359, a resistor R30, a resistor R31, a resistor R32, a resistor R33, a capacitor C30, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C35, a diode D6 and an inductor L3; the BST pin of the DC/DC converter U3 is connected with the SW pin of the DC/DC converter U3 through the resistor R30 and the capacitor C30 which are connected in series with each other; the SW pin of the DC/DC converter U3 is grounded via the diode D6; the IN pin of the DC/DC converter U3 is connected to an input voltage, and is connected to the EN pin of the DC/DC converter U3 via a resistor R33, and is grounded via a capacitor C31 and a capacitor C32 which are connected IN parallel. As described with reference to fig. 7, the input voltage is, for example, dc 15V. One end of the inductor L3 is connected to the SW pin of the DC/DC converter U3, and the other end is used as the output end of the power supply module 14, and the output end is grounded via a capacitor C33, a capacitor C34 and a capacitor C35 which are connected in parallel; the FB pin of the DC/DC converter U3 is connected with the output terminal through a resistor R32. The output terminal may output a dc voltage of 3.3V, such as VCC3V3 in fig. 4, and +3.3V in fig. 5. The power supply module 14 can meet the requirement that the output current can reach 2A, and can provide a stable power supply.
In one embodiment, as shown with reference to fig. 5 and 8, the display module 15 may include: the digital display device comprises a displacement buffer U0, a displacement buffer U2, a digital display tube P1, a digital display tube P2, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17 and a resistor R18; the models of the displacement buffer U0 and the displacement buffer U2 are 74HC 595;
a pin Q0, a pin Q1, a pin Q2, a pin Q3, a pin Q4, a pin Q5, a pin Q6 and a pin Q7 of the displacement buffer U0 are respectively connected with a pin A, a pin B, a pin C, a pin D, a pin E, a pin F, a pin G and a pin DP of a digital display tube P1 and a digital display tube P2 in sequence through the resistor R11, the resistor R12, the resistor R13, the resistor R14, the resistor R15, the resistor R16, the resistor R17 and the resistor R18; a pin Q0, a pin Q1, a pin Q2, a pin Q3, a pin Q4 and a pin Q5 of the displacement buffer U2 are sequentially connected with a pin DIG1, a pin DIG2 and a pin DIG3 of the digital display tube P1, and a pin DIG1, a pin DIG2 and a pin DIG3 of the digital display tube P2;
the STCP pin of the shift register U0 and the STCP pin of the shift register U2 are both connected with the PA09 pin of the microcontroller U1; the SHCP pin of the shift register U0 and the SHCP pin of the shift register U2 are both connected with the PA10 pin of the microcontroller U1; the DS pin of the shift register U0 is connected with the PA08 pin of the microcontroller U1; the DS pin of the shift register U2 is connected to the Q7S pin of the shift register U0. The temperature and humidity information output by the microcontroller U1 is subjected to buffer driving of the displacement buffer U0 and the displacement buffer U2, and is gradually transmitted to the digital display tubes P1 and P2 for display by utilizing the principle of serial input and parallel output.
The present invention also provides an explosion-proof lighting system, as shown with reference to fig. 3, which in one embodiment may include: an explosion-proof lamp 3 arranged in the explosion-proof place 2, the temperature and humidity detector 1 according to any of the above embodiments, and a gateway 4. The temperature and humidity detector 1 is arranged in the explosion-proof place 2. The gateway 4 is provided with a second radio frequency communication module 41 and is connected with the temperature and humidity detector 1 through the second radio frequency communication module 41; the temperature and humidity information is uploaded to the gateway 4 through the first radio frequency communication module 13 and the second radio frequency communication module 41, and the first radio frequency communication module 13 and the second radio frequency communication module 41 communicate with each other in a 433 radio frequency communication mode. The temperature and humidity detector 1 is provided with an explosion-proof structure and an intrinsic safety circuit and has explosion-proof performance. The explosion-proof lighting system is fully linked with the temperature and humidity detector 1, and then the explosion-proof lighting system can be controlled according to the temperature and humidity information of the explosion-proof place 2, so that the explosion-proof lighting system is favorably improved in working reliability on the basis of fully monitoring the working environment of the explosion-proof lighting system.
In an embodiment, referring to fig. 3, the explosion-proof lighting system may further include a control terminal 5, where the control terminal 5 is connected to the gateway 4, and is configured to receive the temperature and humidity information and control the working state of the explosion-proof lamp 3 based on the temperature and humidity information.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a temperature and humidity detector which characterized in that, temperature and humidity detector includes:
the temperature and humidity detection module is used for detecting temperature and humidity information of an explosion-proof place; an explosion-proof lamp is arranged in the explosion-proof place;
the control module is connected with the temperature and humidity detection module and used for transmitting the temperature and humidity information to the first radio frequency communication module and controlling the first radio frequency communication module to send the temperature and humidity information out; and
the first radio frequency communication module is connected with the control module and used for generating radio frequency waves carrying the temperature and humidity information based on the temperature and humidity information transmitted by the control module and transmitting the radio frequency waves to a gateway of the explosion-proof lighting system; the working frequency range of the radio frequency wave is 420MHz to 440MHz, and the central frequency is 433 MHz.
2. The temperature and humidity detector according to claim 1, further comprising: and the power supply module is used for providing a working power supply for the temperature and humidity detector.
3. The temperature and humidity detector according to claim 2, further comprising:
the display module is connected with the control module and used for displaying the temperature and humidity information transmitted by the control module;
the control module is also used for transmitting the temperature and humidity information to the display module and controlling the display module to display.
4. The temperature and humidity detector according to claim 3, wherein the control module comprises: microcontroller U1 model SAMD20G 17.
5. The temperature/humidity detector according to claim 4,
the temperature and humidity detection module comprises: the temperature and humidity sensor TH1 is SHT31, the resistor R6 is connected with the resistor R7, and the resistor R8 is connected with the resistor R7; one end of the resistor R6 is connected with the power supply module, and the other end of the resistor R6 is connected with an SCL pin of the temperature and humidity sensor TH 1; one end of the resistor R7 is connected with the power supply module, and the other end of the resistor R7 is connected with an SDA pin of the temperature and humidity sensor TH 1; one end of the resistor R8 is connected with an ADDR pin of the temperature and humidity sensor TH1, and the other end of the resistor R8 and a GND pin of the temperature and humidity sensor TH1 are both grounded;
a PA18 pin of the microcontroller U1 is connected with an SCL pin of the temperature and humidity sensor TH 1; and a PA19 pin of the microcontroller U1 is connected with an SDA pin of the temperature and humidity sensor TH 1.
6. The temperature and humidity detector according to claim 4, wherein the first RF communication module comprises: RF433 transceiver module P5; an RF _ TX pin of an RF433 transceiver module P5 is connected with a PB10 pin of the microcontroller U1; the RF _ RX pin of the RF433 transceiver module P5 is connected to the PB11 pin of the microcontroller U1.
7. The temperature and humidity detector according to claim 2, wherein the power supply module comprises:
a DC/DC converter U3 with the model number of MP2359, a resistor R30, a resistor R31, a resistor R32, a resistor R33, a capacitor C30, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C35, a diode D6 and an inductor L3; the BST pin of the DC/DC converter U3 is connected with the SW pin of the DC/DC converter U3 through the resistor R30 and the capacitor C30 which are connected in series with each other; the SW pin of the DC/DC converter U3 is grounded via the diode D6; the IN pin of the DC/DC converter U3 is connected with an input voltage, is connected with the EN pin of the DC/DC converter U3 through a resistor R33, and is grounded through a capacitor C31 and a capacitor C32 which are connected IN parallel; one end of the inductor L3 is connected with the SW pin of the DC/DC converter U3, the other end of the inductor L3 is used as the output end of the power supply module, and the output end is grounded through a capacitor C33, a capacitor C34 and a capacitor C35 which are connected in parallel; the FB pin of the DC/DC converter U3 is connected with the output terminal through a resistor R32.
8. The temperature/humidity detector according to claim 4,
the display module includes: the digital display device comprises a displacement buffer U0, a displacement buffer U2, a digital display tube P1, a digital display tube P2, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17 and a resistor R18; the models of the displacement buffer U0 and the displacement buffer U2 are 74HC 595;
a pin Q0, a pin Q1, a pin Q2, a pin Q3, a pin Q4, a pin Q5, a pin Q6 and a pin Q7 of the displacement buffer U0 are respectively connected with a pin A, a pin B, a pin C, a pin D, a pin E, a pin F, a pin G and a pin DP of a digital display tube P1 and a digital display tube P2 in sequence through the resistor R11, the resistor R12, the resistor R13, the resistor R14, the resistor R15, the resistor R16, the resistor R17 and the resistor R18; a pin Q0, a pin Q1, a pin Q2, a pin Q3, a pin Q4 and a pin Q5 of the displacement buffer U2 are sequentially connected with a pin DIG1, a pin DIG2 and a pin DIG3 of the digital display tube P1, and a pin DIG1, a pin DIG2 and a pin DIG3 of the digital display tube P2;
the STCP pin of the shift register U0 and the STCP pin of the shift register U2 are both connected with the PA09 pin of the microcontroller U1; the SHCP pin of the shift register U0 and the SHCP pin of the shift register U2 are both connected with the PA10 pin of the microcontroller U1; the DS pin of the shift register U0 is connected to the PA08 pin of the microcontroller U1.
9. An explosion-proof lighting system, comprising:
an explosion-proof lamp configured in the explosion-proof place;
the temperature and humidity detector of any one of claims 1 to 8; the temperature and humidity detector is arranged in the explosion-proof place; and
the gateway is provided with a second radio frequency communication module and is connected with the temperature and humidity detector through the second radio frequency communication module; and the temperature and humidity information is uploaded to the gateway through the first radio frequency communication module and the second radio frequency communication module.
10. The explosion-proof lighting system of claim 9, further comprising:
and the control terminal is connected with the gateway and used for receiving the temperature and humidity information and controlling the working state of the explosion-proof lamp based on the temperature and humidity information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010538478.5A CN111765920A (en) | 2020-06-13 | 2020-06-13 | Temperature and humidity detector and explosion-proof lighting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010538478.5A CN111765920A (en) | 2020-06-13 | 2020-06-13 | Temperature and humidity detector and explosion-proof lighting system |
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| CN111765920A true CN111765920A (en) | 2020-10-13 |
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| CN202010538478.5A Pending CN111765920A (en) | 2020-06-13 | 2020-06-13 | Temperature and humidity detector and explosion-proof lighting system |
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