Intelligent temperature measuring device

Abstract

The utility model relates to temperature measuring device technical field, concretely relates to an intelligent temperature measuring device, including casing and handle, the casing is fixed with circuit board in, the casing is slidably connected with movable block, still include: temperature measuring module, temperature measuring module is fixed in movable block front side, temperature measuring module includes wireless temperature measuring unit and direct temperature measuring unit, main control module, main control module is fixed on the circuit board, and main control module includes main control chip U4, communication module, communication module is fixed on the circuit board, and communication module includes bluetooth communication unit and WIFI communication unit. In the utility model, through the integration wireless temperature measuring unit covers different temperature measuring scene, the precision demand under different scenes is given full play to, through the integration bluetooth communication unit and WIFI communication unit, the transmission demand of adaptation different distance, different scene, greatly expands data application range.

Description

Technical Field

[0001] This utility model relates to the field of temperature measuring device technology, and more specifically, to an intelligent temperature measuring device. Background Technology

[0002] With the increasing demand for industrial production automation, medical health monitoring, and daily home safety, temperature measuring devices have been widely used in various fields such as equipment fault detection, human body temperature monitoring, food processing temperature control, and electrical equipment overheating early warning.

[0003] The utility model patent with announcement number CN222978940U discloses an infrared temperature measuring device, including an infrared temperature measuring gun. The infrared temperature measuring gun is equipped with a distance calibration component at its end. The distance calibration component includes positioning seats fixed on both sides of the infrared temperature measuring gun end. A second fixing frame and a first fixing frame are screwed to the two sets of positioning seats respectively. A first adjusting column is inserted into the inside of the first fixing frame. A connecting frame is welded to the end of the first adjusting column away from the first fixing frame.

[0004] Although this utility model can make the distance between the object and the infrared sensor at the end of the infrared thermometer a constant value, improving the accuracy of the infrared thermometer, the temperature measurement mode is limited and the scene adaptability is poor. Non-contact (such as infrared temperature measurement) is suitable for high temperature, long distance or inconvenient contact objects, but the accuracy is insufficient when high-precision measurement of low temperature or small volume objects is required. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent temperature measuring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A smart temperature measuring device includes a housing and a handle. A circuit board is fixed inside the housing, and a movable block is slidably connected inside the housing. The device also includes:

[0008] A fixing mechanism is provided for fixing the movable block, and the fixing mechanism is located on the bottom surface of the housing near the front end;

[0009] A temperature measurement module, which is fixed to the front side of the movable block, includes a wireless temperature measurement unit and a direct temperature measurement unit.

[0010] The main control module is fixed on the circuit board and includes a main control chip U4.

[0011] A communication module, which is fixed on the circuit board, includes a Bluetooth communication unit and a WIFI communication unit.

[0012] An interaction module is located at the bottom of the rear wall of the housing. The interaction module is used to switch the temperature measurement mode of the temperature measurement module and the communication mode of the communication module.

[0013] Preferably, a battery is installed inside the grip, the battery is used to provide power VCC, and the interaction module includes resistor R9, resistor R10, switch S1, switch S2, switch S3 and switch S4.

[0014] The first end of resistor R9 is connected to power supply VCC, and the second end of resistor R9 is connected to the detection pin of the main control chip U4. The first end of switch S3 is connected to the second end of resistor R9, and the second end of switch S3 is grounded. The first end of resistor R10 is connected to power supply VCC, and the second end of resistor R10 is connected to another detection pin of the main control chip U4. The first end of switch S4 is connected to the second end of resistor R10, and the second end of switch S4 is grounded. Pressing switch S3 or switch S4 will change the corresponding detection pin from high level to low level. The main control chip U4 switches the communication mode of the communication module according to the change of the detection pin level.

[0015] Switch S1 is connected between the power supply VCC and the wireless temperature measurement unit, and switch S2 is connected between the power supply VCC and the direct temperature measurement unit. Pressing switch S1 or switch S2 enables the power supply VCC to power the corresponding circuit, thereby switching the temperature measurement mode of the temperature measurement module.

[0016] In this setup, the battery provides a stable power supply (VCC) to the device, ensuring that each module can operate normally in scenarios without an external power source, thus improving the device's portability. The interactive module allows switching between temperature measurement and communication modes, and users can complete the operation simply by pressing the corresponding mechanical switch.

[0017] Preferably, the wireless temperature measurement unit includes a temperature measurement chip U1, which is model MLX90614. The temperature measurement chip U1 is connected to the main control chip U4 via I2C communication, and the VCC pin of the temperature measurement chip U1 is connected to the power supply VCC via switch S1.

[0018] Preferably, the direct temperature measurement unit includes a temperature measurement circuit, a signal amplification circuit, and an analog-to-digital conversion circuit that are connected in sequence.

[0019] The temperature measuring circuit includes resistors R1, R2, and R3, and a temperature measuring resistor RL. The first ends of resistors R1 and R2 are connected to the power supply VCC through switch S2. The second end of resistor R1 is connected to the first end of resistor R3, and the second end of resistor R3 is grounded. The second end of resistor R2 is connected to the first end of temperature measuring resistor RL, and the second end of temperature measuring resistor RL is grounded.

[0020] The signal amplification circuit includes resistors R4, R5, R6, R7, and R8, and operational amplifier U2. The first terminal of resistor R4 is connected to the second terminal of resistor R1, and the second terminal of resistor R4 is connected to the non-inverting input terminal of operational amplifier U2. The first terminal of resistor R5 is connected to the second terminal of resistor R2, and the second terminal of resistor R5 is connected to the inverting input terminal of operational amplifier U2. The first terminal of resistor R6 is grounded, and the second terminal of resistor R6 is connected to the non-inverting input terminal of operational amplifier U2. The first terminal of resistor R7 is connected to the inverting input terminal of operational amplifier U2, and the second terminal of resistor R7 is connected to the output terminal of operational amplifier U2. The first terminal of resistor R8 is connected to the output terminal of operational amplifier U2.

[0021] The analog-to-digital conversion circuit includes an analog-to-digital conversion chip U3. The input pin of the analog-to-digital conversion chip U3 is connected to the second end of the resistor R8, and the output pin of the analog-to-digital conversion chip U3 is connected to the corresponding input pin of the main control chip U4.

[0022] In these two settings, the non-contact measurement of the wireless temperature measurement unit can avoid contact with special objects such as high temperature and corrosiveness, protecting the device and not interfering with the state of the object being measured. The direct temperature measurement unit accurately captures minute changes in resistance through a Wheatstone bridge, solves the problem of weak signal through signal amplification, and then uses analog-to-digital conversion to allow the main control chip to accurately read the data, realizing high-precision measurement of low temperature and small volume objects. The two complement each other and broaden the temperature measurement scenarios.

[0023] Preferably, the Bluetooth communication unit includes a Bluetooth chip U5, the model of which is HC-05, and the Bluetooth chip U5 is connected to the main control chip U4 via UART communication.

[0024] The WIFI communication unit includes a WIFI chip U6, which is an ESP8266. The WIFI chip U6 is connected to the main control chip U4 via UART communication.

[0025] In this setup, the Bluetooth communication unit is suitable for short-range communication, making it easy to connect to mobile devices such as smartphones, view and share data on-site without the need for wiring. The WIFI communication unit can connect to the network to transmit data to the cloud or remote terminals over long distances, supporting multi-device monitoring and data traceability.

[0026] Preferably, the system also includes a display module, which includes a display screen U7 embedded in the top of the rear wall of the housing. The pins of the display screen U7 are connected in sequence to the corresponding pins of the main control chip U4.

[0027] In this setup, the display module is directly connected to the main control module, enabling real-time display of temperature readings, mode, and communication mode. No external equipment is required, allowing for on-site confirmation of results and device status, reducing operational steps and improving on-site efficiency.

[0028] Preferably, a slider is fixed in the middle of both sides of the movable block, and a control block is fixed after the slider extends to the outside of the housing. The left and right sides of the housing are provided with grooves that correspond to the position of the slider on the same side and are adapted in size.

[0029] Preferably, the fixing mechanism includes a limiting cylinder fixed to the bottom surface of the housing, a limiting post slidably connected inside the limiting cylinder, a ring fixed to the outer side wall of the limiting post near the bottom surface of the housing, a spring installed between the bottom surface of the ring and the inner bottom surface of the limiting cylinder, the spring being sleeved outside the limiting post, a base plate fixed after the bottom end of the limiting post passes through the limiting cylinder, and a plurality of docking holes are regularly opened on the bottom surface of the movable block, and the top end of the limiting post passes through the bottom wall of the housing and is inserted into the corresponding docking hole.

[0030] In these two settings, the slider of the movable block cooperates with the sliding groove of the housing. Pushing the control block can adjust the extension length of the temperature measuring module, which is suitable for special temperature measuring scenarios such as narrow spaces and high places. The control block can also prevent dust and extend the structural life by fitting against the housing. The fixing mechanism uses the spring force to insert the limit post into the docking hole, which can be fixed without tools and avoid deviation caused by the movement of the movable block during measurement. The multiple docking holes also allow users to flexibly select the extension length, improving the adaptability and accuracy of the device.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] 1. This utility model integrates a wireless temperature measurement unit and a direct temperature measurement unit, and achieves independent control and switching through switches S1 and S2 of the interactive module. The wireless temperature measurement unit supports non-contact measurement and is suitable for high-temperature, long-distance or inconvenient-to-contact objects. The direct temperature measurement unit is suitable for accurate measurement of low-temperature and small-volume objects, covering different temperature measurement scenarios and taking into account the accuracy requirements of different scenarios.

[0033] 2. This utility model integrates a Bluetooth communication unit and a WIFI communication unit. By triggering the change in the detection pin level of the main control chip through the switches S3 and S4 of the interaction module, it achieves rapid switching. Bluetooth communication is suitable for short-distance scenarios, while WIFI communication supports long-distance data transmission, adapting to the transmission needs of different distances and scenarios, and greatly expanding the scope of data application.

[0034] 3. This utility model achieves flexible adjustment and reliable fixation of the temperature measuring module position through the cooperative design of the movable block and the fixing mechanism. The sliders on both sides of the movable block slide along the slide groove of the housing. The user can push the movable block through the control block to adjust the extension length of the temperature measuring module, easily adapting to the measurement needs of narrow spaces, high places, or irregular objects. The fixing mechanism drives the limiting post to insert into the docking hole of the movable block through the elastic force of the spring. Fixing can be completed without additional tools and is firmly fixed, avoiding errors caused by the shaking of the movable block during the measurement process. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0036] Figure 2 This is an overall sectional view of the utility model;

[0037] Figure 3 This is a bottom view of the movable block in the utility model;

[0038] Figure 4 This is a cross-sectional view of the limiting cylinder in the utility model.

[0039] Figure 5 This is a partial connection diagram of the utility model;

[0040] Figure 6 This is a schematic diagram of the wireless temperature measurement unit and the main control module in the utility model.

[0041] Figure 7 This is a circuit diagram of the direct temperature measurement unit in the utility model;

[0042] Figure 8 This is a schematic diagram showing the connection between the communication module and the main control module in the utility model.

[0043] Figure 9 This is a schematic diagram showing the connection between the display module and the main control module in the utility model;

[0044] Figure 10 This is a circuit diagram of the interactive module in the utility model;

[0045] In the picture:

[0046] 100. Housing; 101. Slide rail; 102. Circuit board;

[0047] 200. Grip; 201. Storage battery;

[0048] 300. Movable block; 301. Slider; 302. Control block; 303. Connecting hole;

[0049] 400. Fixing mechanism; 401. Limiting cylinder; 402. Limiting post; 403. Ring; 404. Spring; 405. Base plate;

[0050] 500 Temperature measurement module; 501 Wireless temperature measurement unit; 502 Direct temperature measurement unit; 5020 Temperature measurement circuit; 5021 Signal amplification circuit; 5022 Analog-to-digital conversion circuit;

[0051] 600. Main control module;

[0052] 700. Communication module; 701. Bluetooth communication unit; 702. WIFI communication unit;

[0053] 800, Display module;

[0054] 900. Interactive module. Detailed Implementation

[0055] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0056] Please see Figures 1-10 The present invention provides the following technical solution:

[0057] A smart temperature measuring device includes a housing 100 and a handle 200. A circuit board 102 is fixed inside the housing 100, and a movable block 300 is slidably connected inside the housing 100. The device also includes:

[0058] The fixing mechanism 400 is used to fix the movable block 300. The fixing mechanism 400 is located on the bottom surface of the housing 100 near the front end.

[0059] Temperature measurement module 500 is fixed to the front side of movable block 300. Temperature measurement module 500 includes wireless temperature measurement unit 501 and direct temperature measurement unit 502. Wireless temperature measurement unit 501 performs non-contact temperature measurement function, and direct temperature measurement unit 502 performs contact temperature measurement function.

[0060] The main control module 600 is fixed on the circuit board 102. The main control module 600 includes a main control chip U4. The main control chip U4 can use a common microprocessor and is mainly used for data calculation and processing as well as receiving user instructions.

[0061] The communication module 700 is fixed on the circuit board 102. The communication module 700 includes a Bluetooth communication unit 701 and a WIFI communication unit 702. The Bluetooth communication unit 701 and the WIFI communication unit 702 respectively realize short-range and long-range data transmission.

[0062] An interaction module 900 is located at the bottom of the rear wall of the housing 100. The interaction module 900 is used to switch the temperature measurement mode of the temperature measurement module 500 and the communication mode of the communication module 700.

[0063] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 10 The grip 200 contains a battery 201, which provides power VCC. The grip 200 is also usually equipped with a main power switch. The interaction module 900 includes resistors R9 and R10, switches S1, S2, S3 and S4. Switches S1, S2, S3 and S4 are used to switch between temperature measurement and communication modes. No complicated software settings are required, and users can get started quickly. It is especially suitable for scenarios with high requirements for operational efficiency, such as industrial sites and medical emergency.

[0064] The first end of resistor R9 is connected to power supply VCC, and the second end of resistor R9 is connected to the detection pin of the main control chip U4. The first end of switch S3 is connected to the second end of resistor R9, and the second end of switch S3 is grounded. The first end of resistor R10 is connected to power supply VCC, and the second end of resistor R10 is connected to another detection pin of the main control chip U4. The first end of switch S4 is connected to the second end of resistor R10, and the second end of switch S4 is grounded. Pressing switch S3 or switch S4 will change the corresponding detection pin from high level to low level. The main control chip U4 switches the communication mode of communication module 700 according to the change of detection pin level.

[0065] Switch S1 is connected between the power supply VCC and the wireless temperature measurement unit 501, and switch S2 is connected between the power supply VCC and the direct temperature measurement unit 502. Pressing switch S1 or switch S2 enables the power supply VCC to supply power to the corresponding circuit, thereby switching the temperature measurement mode of the temperature measurement module 500.

[0066] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 The wireless temperature measurement unit 501 includes a temperature measurement chip U1, model MLX90614. The temperature measurement chip U1 is connected to the main control chip U4 via I2C communication. The VCC pin of the temperature measurement chip U1 is connected to the power supply VCC through switch S1. The temperature measurement chip U1 integrates infrared temperature measurement function, which can realize non-contact temperature detection. The I2C communication protocol has the characteristics of two-wire transmission and strong anti-interference ability, which can ensure stable data transmission between the temperature measurement chip U1 and the main control chip U4 and reduce the impact of electromagnetic interference on the data.

[0067] Specifically, the direct temperature measurement unit 502 includes a temperature measurement circuit 5020, a signal amplification circuit 5021, and an analog-to-digital conversion circuit 5022 that are connected in sequence.

[0068] The temperature measuring circuit 5020 includes resistors R1, R2, R3, and a temperature-sensing resistor RL. The first terminals of resistors R1 and R2 are connected to the power supply VCC via switch S2. The second terminal of R1 is connected to the first terminal of R3, and the second terminal of R3 is grounded. The second terminal of R2 is connected to the first terminal of the temperature-sensing resistor RL, and the second terminal of RL is grounded. Resistors R1, R2, R3, and RL form a Wheatstone bridge. Resistors R1, R2, and R3 are all fixed resistors. The resistance of the temperature-sensing resistor RL changes with temperature. Normally at room temperature, the resistances of R1, R2, R3, and RL are equal, and the Wheatstone bridge is balanced and does not output a signal. After a temperature change, the resistance of the temperature-sensing resistor RL changes, and the Wheatstone bridge outputs a signal, which can be used to determine the temperature.

[0069] The signal amplifier circuit 5021 includes resistors R4, R5, R6, R7, and R8, and operational amplifier U2. The first terminal of resistor R4 is connected to the second terminal of resistor R1, and the second terminal of resistor R4 is connected to the non-inverting input of operational amplifier U2. The first terminal of resistor R5 is connected to the second terminal of resistor R2, and the second terminal of resistor R5 is connected to the inverting input of operational amplifier U2. The first terminal of resistor R6 is grounded, and the second terminal of resistor R6 is connected to the non-inverting input of operational amplifier U2. The first terminal of resistor R7 is connected to the inverting input of operational amplifier U2, and the second terminal of resistor R7 is connected to the output terminal of operational amplifier U2. The first terminal of resistor R8 is connected to the output terminal of operational amplifier U2. Wheatstone bridges are typically used for high-precision measurements, and their output signals are usually very small, thus requiring the signal amplifier circuit 5021 to amplify the signal.

[0070] The analog-to-digital converter circuit 5022 includes an analog-to-digital converter chip U3. The input pin of the analog-to-digital converter chip U3 is connected to the second end of the resistor R8, and the output pin of the analog-to-digital converter chip U3 is connected to the corresponding input pin of the main control chip U4.

[0071] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 8 The Bluetooth communication unit 701 includes a Bluetooth chip U5, model number HC-05. The Bluetooth chip U5 is connected to the main control chip U4 via UART communication. The Bluetooth chip U5 is adapted for short-range wireless communication and can transmit the temperature data processed by the main control chip U4 to mobile devices such as mobile phones and tablets.

[0072] The WIFI communication unit 702 includes a WIFI chip U6, model ESP8266. The WIFI chip U6 is connected to the main control chip U4 via UART communication. The WIFI chip U6 can perform short-range wireless communication as well as long-range wireless communication. After connecting to the WIFI network, it can realize long-distance data transmission and upload temperature data to the cloud platform or remote monitoring terminal.

[0073] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 9 It also includes a display module 800, which includes a display screen U7. The display screen U7 is embedded in the top of the rear wall of the housing 100. The pins of the display screen U7 are connected to the corresponding pins of the main control chip U4 in sequence. Users can view the current temperature measurement mode and temperature value in real time through the display screen U7 without relying on external devices. It is especially suitable for rapid on-site temperature measurement and improves operational efficiency.

[0074] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The movable block 300 has a slider 301 fixed in the middle of both sides. The slider 301 extends to the outside of the housing 100 and is fixed with a control block 302. The housing 100 has a groove 101 on both sides that corresponds to the position of the slider 301 on the same side and is adapted in size. The user can directly drive the movable block 300 to move by pushing the control block 302 outside the housing 100. The operation is simple.

[0075] Specifically, the fixing mechanism 400 includes a limiting cylinder 401 fixed to the bottom surface of the housing 100. A limiting post 402 is slidably connected inside the limiting cylinder 401. A ring 403 is fixed on the outer wall of the limiting post 402 near the bottom surface of the housing 100. A spring 404 is installed between the bottom surface of the ring 403 and the inner bottom surface of the limiting cylinder 401. The spring 404 is sleeved on the outside of the limiting post 402. The bottom end of the limiting post 402 passes through the limiting cylinder 401 and is fixed to a base plate 405. The bottom surface of the movable block 300 has several regularly spaced docking holes 303. The top end of the limiting post 402 passes through the bottom wall of the housing 100 and is inserted into the corresponding docking hole 303. The several docking holes 303 on the bottom surface of the movable block 300 form multiple fixed positions. Users can select the appropriate extension length according to measurement needs, further improving the flexibility of the device and adapting to measurement scenarios of different depths and distances.

[0076] When the intelligent temperature measuring device of this utility model is in use, the main power switch on the handle 200 is turned on, and the battery 201 inside the handle 200 provides power VCC to the entire device, which powers the core components such as the circuit board 102, main control module 600, and interaction module 900 inside the housing 100, and the device enters standby mode.

[0077] After the main control chip U4 of the main control module 600 is powered on, it completes initialization, automatically detects the connection status of each module, ensures the normal operation of the hardware circuit, and the display U7 lights up and displays the "standby ready" prompt.

[0078] If the object being measured is in a confined space, at a high place, or in an irregular position, the extension length of the temperature measuring module 500 needs to be adjusted. Press down on the base plate 405 of the fixing mechanism 400. The base plate 405 causes the limiting post 402 to slide downwards along the limiting cylinder 401. The outer ring 403 of the limiting post 402 compresses the spring 404. The top of the limiting post 402 disengages from the docking hole 303 on the bottom surface of the movable block 300, releasing the movable block 300 from its fixed position. This pushes the control blocks 302 on both sides of the housing 100, causing the control blocks 302 to move along the housing 100. The slide groove 101 of the body 100 slides, thereby adjusting the length of the temperature measuring module 500 extending out of the housing 100 on the front side of the movable block 300. After adjusting to the target position, the bottom plate 405 is released, the spring 404 returns to its deformation and pushes the ring 403 to move upward, causing the top of the limiting post 402 to pass through the bottom wall of the housing 100 and insert into the corresponding docking hole 303 of the movable block 300, thus completing the fixation of the movable block 300. This avoids shaking during temperature measurement and prevents errors. It also allows the temperature measuring module 500 to be completely stored inside the housing 100, protecting the temperature measuring module 500.

[0079] Users can switch temperature measurement modes according to the actual temperature measurement scenario through the interaction module 900 at the bottom of the rear wall of the housing 100:

[0080] Pressing the switch S1 of the interaction module 900, the power supply VCC is connected to the temperature measurement chip U1 of the wireless temperature measurement unit 501 through the switch S1. After the temperature measurement chip U1 is powered on, it starts the infrared temperature measurement function, collects the surface temperature data of the object being measured in real time, and transmits the data to the main control chip U4 through the I2C communication protocol.

[0081] When the switch S2 of the interactive module 900 is pressed, the power supply VCC is connected to the temperature measurement circuit 5020 of the direct temperature measurement unit 502 through the switch S2. In the temperature measurement circuit 5020, resistors R1, R2, and R3 and the temperature measuring resistor RL form a Wheatstone bridge. The temperature measuring resistor RL is in contact with the surface of the object being measured. When the temperature changes, the resistance value of the temperature measuring resistor RL changes synchronously, causing the bridge to become unbalanced and outputting a weak analog voltage signal. The weak voltage signal is amplified to a recognizable range by the signal amplification circuit 5021. The amplified signal is then output to the analog-to-digital converter circuit 5022 through resistor R8. The analog-to-digital converter chip U3 of the analog-to-digital converter circuit 5022 receives the amplified analog signal, converts it into a digital signal, and transmits the digital signal to the main control chip U4.

[0082] Users can switch communication methods via the interactive module 900 to transmit the processed temperature data to external devices.

[0083] When switch S3 is pressed, the second terminal of resistor R9 is grounded through switch S3. The level of the detection pin changes from high to low. After the main control chip U4 detects the level change, it starts the Bluetooth communication unit 701. The Bluetooth chip U5 establishes a connection with the main control chip U4 through the UART communication protocol. The main control chip U4 transmits the temperature data packet to the Bluetooth chip U5 through UART. The Bluetooth chip U5 then wirelessly sends the data to a nearby Bluetooth receiving device.

[0084] When switch S4 is pressed, the second terminal of resistor R10 is grounded through switch S4. The level of the detection pin changes from high to low. After the main control chip U4 detects the level change, it starts the WIFI communication unit 702. The WIFI chip U6 establishes a connection with the main control chip U4 through the UART communication protocol and automatically accesses the preset WIFI network. The main control chip U4 transmits the temperature data packet to the WIFI chip U6 through UART. The WIFI chip U6 uploads the data to the cloud monitoring platform or remote terminal to realize long-distance data sharing.

[0085] The main control chip U4 establishes a connection with the display screen U7 through the corresponding pins, and transmits the processed "temperature value + temperature measurement mode identifier + communication mode identifier" to the display screen U7 in real time. Users can directly view the current measurement results through the display screen U7 on the top of the rear wall of the housing 100.

[0086] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An intelligent temperature measuring device, comprising a housing (100) and a handle (200), wherein a circuit board (102) is fixed inside the housing (100), characterized in that, The housing (100) is slidably connected to a movable block (300), and also includes: A fixing mechanism (400) is provided for fixing the movable block (300), and the fixing mechanism (400) is located on the bottom surface of the housing (100) near the front end. Temperature measurement module (500), the temperature measurement module (500) is fixed to the front side of the movable block (300), the temperature measurement module (500) includes a wireless temperature measurement unit (501) and a direct temperature measurement unit (502). The main control module (600) is fixed on the circuit board (102) and includes a main control chip U4. A communication module (700) is fixed on the circuit board (102). The communication module (700) includes a Bluetooth communication unit (701) and a WIFI communication unit (702). An interaction module (900) is located at the bottom of the rear wall of the housing (100). The interaction module (900) is used to switch the temperature measurement mode of the temperature measurement module (500) and the communication mode of the communication module (700).

2. The intelligent temperature measuring device according to claim 1, characterized in that: The grip (200) is equipped with a battery (201) for providing power VCC. The interaction module (900) includes resistors R9 and R10, and switches S1, S2, S3 and S4. The first end of resistor R9 is connected to power supply VCC, and the second end of resistor R9 is connected to the detection pin of the main control chip U4. The first end of switch S3 is connected to the second end of resistor R9, and the second end of switch S3 is grounded. The first end of resistor R10 is connected to power supply VCC, and the second end of resistor R10 is connected to another detection pin of the main control chip U4. The first end of switch S4 is connected to the second end of resistor R10, and the second end of switch S4 is grounded. Pressing switch S3 or switch S4 will change the corresponding detection pin from high level to low level. The main control chip U4 switches the communication mode of the communication module (700) according to the level change of the detection pin. Switch S1 is connected between the power supply VCC and the wireless temperature measurement unit (501), and switch S2 is connected between the power supply VCC and the direct temperature measurement unit (502). Pressing switch S1 or switch S2 enables the power supply VCC to power the corresponding circuit, thereby switching the temperature measurement mode of the temperature measurement module (500).

3. The intelligent temperature measuring device according to claim 2, characterized in that: The wireless temperature measurement unit (501) includes a temperature measurement chip U1, the model of which is MLX90614. The temperature measurement chip U1 is connected to the main control chip U4 via I2C communication. The VCC pin of the temperature measurement chip U1 is connected to the power supply VCC via switch S1.

4. The intelligent temperature measuring device according to claim 2, characterized in that: The direct temperature measurement unit (502) includes a temperature measurement circuit (5020), a signal amplification circuit (5021), and an analog-to-digital conversion circuit (5022) connected in sequence. The temperature measuring circuit (5020) includes resistors R1, R2, R3 and a temperature measuring resistor RL. The first ends of resistors R1 and R2 are connected to the power supply VCC through switch S2. The second end of resistor R1 is connected to the first end of resistor R3 and the second end of resistor R3 is grounded. The second end of resistor R2 is connected to the first end of temperature measuring resistor RL and the second end of temperature measuring resistor RL is grounded. The signal amplification circuit (5021) includes resistors R4, R5, R6, R7, and R8, and operational amplifier U2. The first end of resistor R4 is connected to the second end of resistor R1, and the second end of resistor R4 is connected to the non-inverting input of operational amplifier U2. The first end of resistor R5 is connected to the second end of resistor R2, and the second end of resistor R5 is connected to the inverting input of operational amplifier U2. The first end of resistor R6 is grounded, and the second end of resistor R6 is connected to the non-inverting input of operational amplifier U2. The first end of resistor R7 is connected to the inverting input of operational amplifier U2, and the second end of resistor R7 is connected to the output of operational amplifier U2. The first end of resistor R8 is connected to the output of operational amplifier U2. The analog-to-digital converter circuit (5022) includes an analog-to-digital converter chip U3. The input pin of the analog-to-digital converter chip U3 is connected to the second end of the resistor R8, and the output pin of the analog-to-digital converter chip U3 is connected to the corresponding input pin of the main control chip U4.

5. The intelligent temperature measuring device according to claim 1, characterized in that: The Bluetooth communication unit (701) includes a Bluetooth chip U5, the model of which is HC-05. The Bluetooth chip U5 is connected to the main control chip U4 via UART communication. The WIFI communication unit (702) includes a WIFI chip U6, the model of which is ESP8266. The WIFI chip U6 is connected to the main control chip U4 via UART communication.

6. The intelligent temperature measuring device according to claim 1, characterized in that: It also includes a display module (800), which includes a display screen U7. The display screen U7 is embedded in the top of the rear wall of the housing (100), and the pins of the display screen U7 are connected to the corresponding pins of the main control chip U4 in sequence.

7. The intelligent temperature measuring device according to claim 1, characterized in that: The movable block (300) has a slider (301) fixed in the middle of both sides. The slider (301) extends to the outside of the housing (100) and is fixed with a control block (302). The housing (100) has a groove (101) on both sides that corresponds to the position of the slider (301) on the same side and is adapted in size.

8. The intelligent temperature measuring device according to claim 1, characterized in that: The fixing mechanism (400) includes a limiting cylinder (401) fixed to the bottom surface of the housing (100). A limiting post (402) is slidably connected inside the limiting cylinder (401). A ring (403) is fixed on the outer side wall of the limiting post (402) near the bottom surface of the housing (100). A spring (404) is installed between the bottom surface of the ring (403) and the inner bottom surface of the limiting cylinder (401). The spring (404) is sleeved outside the limiting post (402). The bottom end of the limiting post (402) passes through the limiting cylinder (401) and is fixed with a base plate (405). A plurality of docking holes (303) are regularly opened on the bottom surface of the movable block (300). The top end of the limiting post (402) passes through the bottom wall of the housing (100) and is inserted into the corresponding docking hole (303).

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