A multimeter with tire pressure testing function

Abstract

This utility model relates to the field of multimeter technology and discloses a multimeter with tire pressure testing capabilities. It includes an electronic control component; a tire pressure sensing unit electrically connected to the electronic control component, configured to check tire pressure; a multimeter measuring unit electrically connected to the electronic control component, configured to detect circuit parameters; and a display screen electrically connected to the electronic control component, configured to display the detection results of the tire pressure sensing unit and the multimeter measuring unit. It can be used as a multimeter to check circuit parameters such as voltage and circuit resistance, and also as a tire pressure gauge for vehicle tire pressure monitoring. It features high integration and diverse functions.

Description

Technical Field

[0001] This utility model relates to the field of multimeter technology, and in particular to a multimeter with tire pressure testing function. Background Technology

[0002] A multimeter is a portable electronic measuring instrument primarily used to measure various basic electrical parameters in circuits or electronic components. It integrates multiple measurement functions and is one of the most commonly used and indispensable tools for electronic engineering, electrical repair, laboratory work, and DIY enthusiasts.

[0003] A tire pressure gauge is a portable instrument specifically designed to measure the air pressure inside vehicle tires. It is an essential tool for the routine maintenance and safety checks of vehicles such as cars, motorcycles, and bicycles, directly impacting driving safety, tire life, and fuel economy.

[0004] In the existing technology, tire pressure gauges and multimeters are usually separate devices, which are inconvenient to carry and use; traditional devices can only perform a single function and cannot meet the needs of multi-functional testing; users can only use separate tire pressure gauges and multimeters to perform tire pressure checks or circuit parameter tests such as voltage and circuit resistance. Utility Model Content

[0005] Therefore, it is necessary to provide a multimeter with tire pressure testing to address the existing problems. The aim is to provide an instrument that can be used as a multimeter to check circuit parameters such as voltage and circuit resistance, and also as a tire pressure gauge to detect vehicle tire pressure.

[0006] This application provides a multimeter with a tire pressure test function, comprising:

[0007] Electronic control components;

[0008] A tire pressure sensing unit is electrically connected to the electronic control assembly, and the tire pressure sensing unit is configured to check tire pressure.

[0009] The multimeter measuring unit is electrically connected to the electronic control component, and the multimeter measuring unit is configured to detect circuit parameters;

[0010] The display screen is electrically connected to the electronic control component and is configured to display the detection results of the tire pressure sensing unit and the multimeter measuring unit.

[0011] In some embodiments, the tire pressure sensing unit includes:

[0012] The tire pressure sensor is electrically connected to the electronic control assembly.

[0013] The probe assembly includes a probe section, an air tube section, and an air cover section connected in sequence. The air cover section is connected to the electronic control component and forms a sealed cavity. The tire pressure sensor is disposed in the sealed cavity. The probe section is connected to the sealed cavity through the air tube section. The probe section is configured to connect to a tire valve.

[0014] In some embodiments, the multimeter measuring unit includes:

[0015] The measuring probes are electrically connected to the electronic control component.

[0016] In some embodiments, the multimeter with tire pressure testing also includes a housing, in which the electronic control components, the tire pressure sensing unit, the multimeter measuring unit, and the display screen are disposed.

[0017] In some embodiments, the outer surface of the housing is formed with a pen clip, which is configured to receive the measuring probe.

[0018] In some embodiments, the electronic control component includes a circuit board disposed within the housing, the circuit board being electrically connected to the tire pressure sensor, the measuring probes, and the display screen, respectively;

[0019] The first end of the housing has an adapter cable that connects to the measuring instrument. The probe extends from the second end of the housing, which is the end of the housing opposite to the first end.

[0020] In some embodiments, the electronic control component includes:

[0021] The circuit board is electrically connected to the tire pressure sensing unit, the multimeter measuring unit, and the display screen, respectively.

[0022] A tire pressure function key is electrically connected to the circuit board, and the tire pressure function key is configured to control the tire pressure sensing unit.

[0023] The multimeter function keys are electrically connected to the circuit board, and the multimeter function keys are configured to control the multimeter measurement unit.

[0024] In some implementations, the multimeter with tire pressure testing also includes:

[0025] A lighting fixture, electrically connected to the electronic control component, is configured as supplemental lighting;

[0026] The tire pressure sensing unit includes a probe portion, which is configured to connect to the tire valve, and the illumination direction of the lamp is the same as that of the probe portion.

[0027] In some implementations, the multimeter with tire pressure testing also includes:

[0028] A buzzer, electrically connected to the electronic control component, is configured to provide an alarm for abnormalities.

[0029] In some implementations, the multimeter with tire pressure testing also includes:

[0030] A battery, electrically connected to the electronic control assembly, is configured to provide electrical energy.

[0031] The beneficial effects of this utility model are:

[0032] The multimeter with tire pressure testing provided in this application can be used both as a multimeter to check circuit parameters such as voltage and circuit resistance, and as a tire pressure gauge to detect vehicle tire pressure. It features high integration and diverse functions. This design, combining a tire pressure gauge and a multimeter, significantly optimizes the efficiency and practicality of vehicle safety monitoring through functional integration, reducing the number of times users need to replace equipment during testing. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0034] Figure 1 A three-dimensional schematic diagram of the internal circuit structure of a multimeter with tire pressure testing provided for an embodiment of this application;

[0035] Figure 2 A schematic diagram of the circuit principle of a multimeter with tire pressure testing provided for an embodiment of this application;

[0036] Figure 3 A split diagram of a multimeter with a tire pressure test function provided for an embodiment of this application;

[0037] Figure 4 A three-dimensional schematic diagram of a multimeter with tire pressure testing function provided for embodiments of this application. Figure 1 ;

[0038] Figure 5 A three-dimensional schematic diagram of a multimeter with tire pressure testing function provided for embodiments of this application. Figure 2 .

[0039] Figure label:

[0040] 100. Electronic control components; 110. Circuit board; 120. Tire pressure function key; 130. Multimeter function key;

[0041] 200. Tire pressure sensing unit; 210. Tire pressure sensor; 220. Probe assembly; 221. Air hood; 222. Air tube; 223. Probe.

[0042] 300. Multimeter measuring unit; 310. Measuring probes; 320. Adapter cable;

[0043] 400. Display screen;

[0044] 500. Housing; 510. Pen clip;

[0045] 600. Lighting lamp;

[0046] 700. Buzzer;

[0047] 800, battery. Detailed Implementation

[0048] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0049] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this utility model, unless otherwise explicitly specified and limited, a feature "above" or "below" the second feature may mean that the feature is in direct contact with the second feature or indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature may mean that the feature is directly above or diagonally above the second feature, or simply indicates that the feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "beneath" the second feature may mean that the feature is directly below or diagonally below the second feature, or simply indicates that the feature is at a lower horizontal level than the second feature.

[0053] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0054] refer to Figure 1-5 This application provides a multimeter with tire pressure testing capabilities, comprising an electronic control component 100, a tire pressure sensing unit 200, a multimeter measuring unit 300, and a display screen 400. The tire pressure sensing unit 200 is electrically connected to the electronic control component 100 and is configured to check tire pressure. The multimeter measuring unit 300 is also electrically connected to the electronic control component 100 and is configured to detect circuit parameters. The display screen 400 is electrically connected to the electronic control component 100 and is configured to display the detection results of the tire pressure sensing unit 200 and the multimeter measuring unit 300. The multimeter with tire pressure testing capabilities provided by this application can be used as a multimeter to check circuit parameters such as voltage and circuit resistance, and also as a tire pressure gauge for vehicle tire pressure monitoring. It features high integration and diverse functions. The design that combines a tire pressure gauge with a multimeter significantly optimizes the efficiency and practicality of vehicle safety monitoring through functional integration, reducing the number of times users need to change equipment during testing.

[0055] It should be noted that the detection procedures and algorithms involved in the tire pressure sensing unit 200 and the multimeter measuring unit 300 can be existing ones and are not related to the improvement direction of this application, and are not specifically limited.

[0056] In some implementations, reference Figure 1-5 The multimeter with tire pressure testing also includes a buzzer 700, which is electrically connected to the electronic control unit 100. The buzzer 700 is configured to alarm for abnormal conditions to alert the user.

[0057] refer to Figure 1-5 In some embodiments, the multimeter with tire pressure testing also includes a battery 800, which is electrically connected to the electronic control assembly 100 and configured to provide electrical power. Preferably, the battery 800 may be a rechargeable battery.

[0058] In some implementations, reference Figure 1-5 The electronic control component 100 includes a circuit board 110, a tire pressure function key 120, and a multimeter function key 130. The circuit board 110 is electrically connected to the tire pressure sensing unit 200, the multimeter measuring unit 300, and the display screen 400, respectively. The tire pressure function key 120 is electrically connected to the circuit board 110 and is configured to control the tire pressure sensing unit 200. The multimeter function key 130 is electrically connected to the circuit board 110 and is configured to control the multimeter measuring unit 300. Thus, tire pressure testing and multimeter testing can be performed respectively through the tire pressure function key 120 and the multimeter function key 130.

[0059] refer to Figure 1-5 In some embodiments, the multimeter with tire pressure testing also includes a lamp 600. The lamp 600 is electrically connected to the electronic control assembly 100 and is configured for supplemental lighting. The tire pressure sensing unit 200 includes a probe 223, which is configured to connect to the tire valve. The illumination direction of the lamp 600 is the same as the orientation of the probe 223. On the one hand, the lamp 600 can be used as a flashlight; on the other hand, the fact that the illumination direction of the lamp 600 is the same as the orientation of the probe 223 provides illumination for the connection of the probe 223 to the tire valve, making it more convenient to use.

[0060] In some implementations, reference Figure 1-5The tire pressure sensing unit 200 includes a tire pressure sensor 210 and a probe assembly 220. The tire pressure sensor 210 is electrically connected to the electronic control assembly 100. The probe assembly 220 includes a probe section 223, an air tube section 222, and an air cover section 221 connected in sequence. The air cover section 221 is connected to the electronic control assembly 100 and forms a sealed cavity. The tire pressure sensor 210 is disposed in the sealed cavity. The probe section 223 is connected to the sealed cavity through the air tube section 222. The probe section 223 is configured to connect to the tire valve. Air can be guided into the sealed cavity through the probe section 223, the air tube section 222, and the air cover section 221, and then to the tire pressure sensor 210 for tire pressure detection. The air hood 221 can be connected to the electronic control component 100 to form a sealed cavity. This can be achieved by sealing the air hood 221 and the electronic control component 100 with adhesive, or by sandwiching a sealing ring between the air hood 221 and the electronic control component 100, and simultaneously fastening the air hood 221 and the electronic control component 100 with screws. The probe part 223 can use an existing structure, and there is no specific limitation.

[0061] refer to Figure 1-5 In some embodiments, the multimeter measuring unit 300 includes measuring probes 310. The measuring probes 310 are electrically connected to the electronic control component 100. Existing measuring probes 310 can be used; no specific type is limited.

[0062] In some implementations, reference Figure 1-5 The multimeter with tire pressure testing also includes a housing 500, an electronic control assembly 100, a tire pressure sensing unit 200, a multimeter measurement unit 300, and a display screen 400, all housed within the housing 500. This high level of integration allows for dual functionality, eliminating the need to purchase a separate multimeter and tire pressure gauge, resulting in lower overall costs. Furthermore, the housing 500 can be designed as a handheld unit, offering a compact and portable design suitable for civilian use.

[0063] refer to Figure 1-5 In some embodiments, the outer surface of the housing 500 is formed with a pen clip 510, which is configured to store the measuring probe 310, thereby preventing the measuring probe 310 from being placed randomly or damaged due to improper storage.

[0064] Furthermore, refer to Figure 1-5In some embodiments, the electronic control component 100 includes a circuit board 110 disposed within the housing 500, the circuit board 110 being electrically connected to the tire pressure sensor 210, the measuring probe 310, and the display screen 400, respectively; wherein, an adapter cable 320 is led out from the first end of the housing 500, the adapter cable 320 being electrically connected to the measuring probe 310, and a probe part 223 is led out from the second end of the housing 500, the second end being the end of the housing 500 opposite to the first end. By arranging the probe part 223 and the measuring probe 310 at opposite ends of the housing 500, it is beneficial to reduce mutual interference between them.

[0065] Furthermore, refer to Figure 1-5 In some embodiments, the housing 500 may include a first housing, a second housing, a first tailstock, and a second tailstock. These three components are combined to support the electronic control assembly 100, the tire pressure sensing unit 200, the multimeter measuring unit 300, and the display screen 400. The housing 500 has a modular design, facilitating the assembly and integration of various components. The pen clip 510 can be integrally formed with the first housing or it can be a separate pen clip shell, which can be plugged into or bolted to the first housing.

[0066] The multimeter with tire pressure testing function provided in some embodiments of this application has the following advantages in detecting vehicle tire pressure and other related information:

[0067] 1. Multi-functional: It can simultaneously monitor parameters such as tire pressure, battery voltage, and circuit resistance, reducing the hassle of switching tools (such as the need to use a tire pressure gauge and a multimeter separately in traditional scenarios). Suitable for automotive repair scenarios, based on the functions provided by the tire pressure sensing unit 200 and the multimeter measurement unit 300, technicians can quickly troubleshoot whether "abnormal tire pressure is caused by circuit faults (such as power supply problems to the tire pressure sensor)."

[0068] 2. For vehicles without tire pressure gauges: directly measure the actual tire pressure; for vehicles with tire pressure gauges: simultaneously detect the power supply status of the tire pressure gauge (such as sensor battery voltage) to quickly determine whether the abnormal tire pressure is caused by a power failure of the sensor.

[0069] 3. In addition, in some implementations, the multimeter measurement unit 300 can be designed using an existing smart multimeter to achieve intelligent parameter identification, such as automatically identifying the type of parameters such as voltage / resistance / diode / capacitor; for example, when detecting the tire pressure sensor, it can automatically switch to the voltage range measurement power supply state (3-12V DC), identify the line impedance to determine sensor aging (abnormal resistance value in the Ω range), and verify the integrity of the sensor chip through diode characteristics, etc.

[0070] 4. Furthermore, its multi-functionality and high integration reduce the cost and storage space required for purchasing multiple devices. No additional tire pressure gauge is needed; a single tool is sufficient for basic vehicle inspection needs.

[0071] Finally, it should be noted that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above embodiments illustrate only one implementation of the present utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the appended claims.

Claims

1. A multimeter with tire pressure testing capability, characterized in that, include: Electronic control components (100); A tire pressure sensing unit (200) is electrically connected to the electronic control assembly (100), and the tire pressure sensing unit (200) is configured to check tire pressure; The multimeter measuring unit (300) is electrically connected to the electronic control component (100), and the multimeter measuring unit (300) is configured to detect circuit parameters; The display screen (400) is electrically connected to the electronic control assembly (100) and is configured to display the detection results of the tire pressure sensing unit (200) and the multimeter measuring unit (300).

2. The multimeter with tire pressure testing function according to claim 1, characterized in that, The tire pressure sensing unit (200) includes: Tire pressure sensor (210) is electrically connected to the electronic control assembly (100); The probe assembly (220) includes a probe section (223), an air tube section (222), and an air cover section (221) connected in sequence. The air cover section (221) is connected to the electronic control assembly (100) and forms a sealed cavity. The tire pressure sensor (210) is disposed in the sealed cavity. The probe section (223) is connected to the sealed cavity through the air tube section (222). The probe section (223) is configured to connect to the tire valve.

3. The multimeter with tire pressure testing function according to claim 2, characterized in that, The multimeter measurement unit (300) includes: The measuring probe (310) is electrically connected to the electronic control component (100).

4. The multimeter with tire pressure testing function according to claim 3, characterized in that, It also includes a housing (500), and the electronic control component (100), the tire pressure sensing unit (200), the multimeter measuring unit (300), and the display screen (400) are disposed in the housing (500).

5. The multimeter with tire pressure testing function according to claim 4, characterized in that, The outer surface of the housing (500) has a pen clip (510) configured to receive the measuring probe (310).

6. The multimeter with tire pressure testing function according to claim 4, characterized in that, The electronic control assembly (100) includes a circuit board (110) disposed inside the housing (500), and the circuit board (110) is electrically connected to the tire pressure sensor (210), the measuring probe (310), and the display screen (400) respectively; The housing (500) has an adapter cable (320) extending from its first end, which is electrically connected to the measuring probe (310). The probe part (223) extends from the second end of the housing (500), which is the end of the housing (500) opposite to the first end.

7. The multimeter with tire pressure testing function according to any one of claims 1-6, characterized in that, The electronic control component (100) includes: The circuit board (110) is electrically connected to the tire pressure sensing unit (200), the multimeter measuring unit (300), and the display screen (400), respectively; The tire pressure function key (120) is electrically connected to the circuit board (110) and is configured to control the tire pressure sensing unit (200). The multimeter function key (130) is electrically connected to the circuit board (110), and the multimeter function key (130) is configured to control the multimeter measurement unit (300).

8. The multimeter with tire pressure testing function according to any one of claims 1-6, characterized in that, Also includes: A lighting lamp (600) is electrically connected to the electronic control assembly (100), and the lighting lamp (600) is configured as supplementary lighting; The tire pressure sensing unit (200) includes a probe (223) configured to connect to the tire valve, and the illumination direction of the lamp (600) is the same as that of the probe (223).

9. The multimeter with tire pressure testing function according to any one of claims 1-6, characterized in that, Also includes: A buzzer (700) is electrically connected to the electronic control assembly (100), and the buzzer (700) is configured to provide an abnormal alarm.

10. The multimeter with tire pressure testing function according to any one of claims 1-6, characterized in that, Also includes: A battery (800) is electrically connected to the electronic control assembly (100), and the battery (800) is configured to provide electrical energy.

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