A kind of field car storage battery safety gap measuring device based on TOF technology
By using a non-contact measurement device based on TOF technology, a high-precision measurement of the gap between the batteries in the parking vehicle is achieved by utilizing a laser rangefinder and a translation mechanism. This solves the problems of low accuracy and poor environmental adaptability in existing technologies, and enables fast and reliable safety gap judgment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU SPECIAL EQUIP INSPECTION & TESTING RES INST (GANSU SPECIAL EQUIP INSPECTION & TESTING GRP)
- Filing Date
- 2025-07-12
- Publication Date
- 2026-07-24
AI Technical Summary
Existing technologies for measuring the gap between the metal cover of a vehicle battery and the battery itself suffer from low accuracy, complex operation, and poor environmental adaptability. In particular, they are difficult to guarantee the reliability and accuracy of measurements in complex and ever-changing industrial environments.
A non-contact measurement device based on TOF technology is adopted. It uses a laser rangefinder to measure distance by emitting and receiving laser pulses. Combined with a translation mechanism, it realizes linear multi-point measurement between the metal cover and the battery. The MCU microcontroller is used for data processing and feedback.
It achieves high-precision and reliable gap measurement, can quickly determine whether the gap meets safety standards, and provides timely feedback on the results, reducing the impact of human error and environmental noise.
Smart Images
Figure CN224552326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safety testing of parking vehicle batteries, and in particular to a parking vehicle battery safety gap measuring device based on TOF technology. Background Technology
[0002] With the rapid development of industry, forklift trucks, as an important component of modern industry, are widely used in various production and logistics environments. The efficient operation of these vehicles is crucial for improving production efficiency and promoting economic circulation. However, improper battery management in forklift trucks can lead to safety hazards, especially when wiring is exposed on the battery surface. If the distance between the metal cover and the battery is inappropriate, the insulation layer may be damaged due to compression or friction, potentially causing short circuits or leakage. To address these issues, TSG81—2022, "Safety Technical Regulations for Special Motor Vehicles in Forklifts," clearly stipulates the minimum clearance requirements between the battery metal cover and live parts on forklifts: at least 30mm without insulation and at least 10mm with insulation. Ensuring the safety of this critical clearance is essential to preventing electrical faults.
[0003] Among existing technologies, traditional manual ruler measurement, while simple to operate, is increasingly proving inadequate in modern industrial applications due to inherent limitations such as low accuracy, low efficiency, and susceptibility to human factors. While video measurement technology, a relatively advanced non-contact measurement method, can provide high-precision results, it is susceptible to factors such as lighting changes and shadows in practical applications, especially in complex and variable working environments, which significantly reduces its reliability and accuracy. Although acoustic ranging technology is inexpensive and easy to operate, environmental noise and uncertainties in reflective surfaces can increase measurement errors, thus affecting the final results. Utility Model Content
[0004] In view of this, the present invention provides a vehicle battery safety gap measuring device based on TOF technology. This device, based on TOF technology, performs linear multi-point measurement of the distance between the metal cover plate of the vehicle battery and the battery in a non-contact measurement manner, thereby achieving higher accuracy measurement and improving the reliability and practicality of battery safety gap measurement technology.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A vehicle battery safety clearance measuring device based on TOF technology includes a housing. The interior of the housing is divided into a measuring chamber and a control chamber by a partition. A translation mechanism is installed in the measuring chamber, and a laser ranging sensor is installed on the front side of the translation mechanism. The control chamber contains a battery and a controller. The controller includes an MCU microcontroller and a memory. A strip-shaped measuring hole is opened on the front side of the housing in the portion of the measuring chamber, allowing the laser emitted and received by the laser ranging sensor to pass through. A power switch and a speaker are embedded on the left side of the housing. A display screen is embedded on the top of the housing in the portion of the control chamber. The display screen, power switch, speaker, battery, memory, and laser ranging sensor are all electrically connected to the MCU microcontroller. The MCU microcontroller also controls the translation mechanism to perform horizontal movement.
[0006] Furthermore, the translation mechanism includes a support, a lead screw, a guide rod, and a DC motor. The guide rod is horizontally fixed in the measuring chamber. The lead screw is parallel to the guide rod. One end of the lead screw is rotatably connected to the housing, and the other end is connected to the output shaft of the DC motor. The DC motor located in the control chamber is fixed on the partition plate. The DC motor is electrically connected to the MCU single-chip microcomputer. The guide rod is slidably connected to the support. The lead screw is threadedly connected to the support. A laser rangefinder sensor is installed on the front side of the support, and the rear side of the support contacts the rear side of the housing.
[0007] Furthermore, an embedded handle is provided on the top of the housing located in the measuring chamber.
[0008] Furthermore, the laser ranging sensor is electrically connected to the MCU microcontroller through a signal conditioning and acquisition circuit and a laser emission control circuit.
[0009] Preferably, the laser ranging sensor is a VL6180x laser ranging module.
[0010] More preferably, the signal conditioning and acquisition circuit includes an A / D converter, a logic gate chip, a signal amplifier, a filter, a first resistor, a second resistor, a first adjustable resistor, and a second adjustable resistor. The input terminal of the signal amplifier is connected to the laser rangefinder, the output terminal of the signal amplifier is connected to the filter, the output terminal of the filter is connected to the A / D converter, the A / D converter is connected to the logic gate chip and the MCU microcontroller, respectively, the two fixed terminals of the first adjustable resistor are connected to the positive and negative terminals of the battery, the adjustment terminal of the first adjustable resistor is connected in series with the second resistor and the first resistor, the other end of the first resistor is grounded, one fixed terminal of the second adjustable resistor is connected to the logic power supply input pin of the A / D converter, the other fixed terminal of the second adjustable resistor is connected to the reference voltage output pin of the A / D converter, and the adjustment terminal of the second adjustable resistor is connected to the reference voltage input pin of the A / D converter. The first adjustable resistor is used to adjust the bias of the A / D converter, and the second adjustable resistor is used to adjust the reference voltage of the A / D converter.
[0011] Due to the adoption of the above technical solution, the beneficial technical effects of this utility model are as follows: 1. This utility model discloses a vehicle battery safety gap measuring device based on TOF technology for linear multi-point measurement of the distance between the metal cover plate of the vehicle battery and the battery. It adopts a non-contact measurement method, which determines the distance of the target by emitting a laser pulse through a laser rangefinder sensor and measuring the time required for the beam to return to the receiver. It can provide extremely high measurement accuracy and reliability, and solves the problems of low accuracy, complex operation and poor environmental adaptability in existing measurement methods.
[0012] 2. The vehicle battery safety gap measuring device based on TOF technology of this utility model can quickly and accurately measure the actual distance between the metal cover plate and the charged part of the battery, automatically determine whether the gap meets the safety standard, and provide timely feedback on the results. Attached Figure Description
[0013] Figure 1 This is a perspective view of a vehicle battery safety gap measuring device based on TOF technology according to this utility model; Figure 2 This is a schematic diagram of the internal structure of a vehicle battery safety gap measuring device based on TOF technology according to this utility model; Figure 3 This is a control principle diagram of a vehicle battery safety gap measuring device based on TOF technology according to this utility model; Figure 4 This is a schematic diagram of the signal conditioning and acquisition circuit in a vehicle battery safety gap measuring device based on TOF technology according to this utility model. Figure 5 This is a detection scenario diagram of a vehicle battery safety gap measuring device based on TOF technology according to this utility model; Reference numerals: 1-Safety gap measuring device for vehicle battery, 101-House, 102-Measuring hole, 103-Embedded handle, 104-Display screen, 105-Power switch, 106-Speaker, 107-Laser rangefinder sensor, 108-Support, 109-Lead screw, 110-Guide rod, 111-DC motor, 112-Battery, 113-Controller, 114-MCU microcontroller, 115-Signal conditioning and acquisition circuit, 1151-A / D converter, 1152-Logic gate chip, 1153-Signal amplifier, 1154-Filter, 1155-First resistor, 1156-Second resistor, 1157-First adjustable resistor, 1158-Second adjustable resistor, 116-Laser emission control circuit, 117-Memory, 2-Metal cover plate, 3-Battery. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following preferred embodiments will be used to further describe this utility model in detail.
[0015] Example Please see the appendix Figure 1-4 As shown in the figure, this embodiment provides a vehicle battery safety gap measuring device based on TOF technology, including a housing 101. The interior of the housing 101 is divided into a measuring chamber and a control chamber by a partition. A translation mechanism is provided in the measuring chamber, and a laser ranging sensor 107 is installed on the front side of the translation mechanism. The control chamber is equipped with a battery 112 and a controller 113. The controller 113 includes an MCU microcontroller 114 and a memory 117. A strip-shaped measuring hole 102 is opened on the front side of the housing 101 in the portion located in the measuring chamber. The strip-shaped measuring hole 102 allows the laser emitted and received by the laser ranging sensor 107 to pass through. A power switch 105 and a speaker 106 are embedded on the left side of the housing 101. A display screen 104 is embedded on the top of the housing 101 in the portion located in the control chamber. The display screen 104, power switch 105, speaker 106, battery 112, memory 117, and laser ranging sensor 107 are all electrically connected to the MCU microcontroller 114. The MCU microcontroller 114 also controls the translation mechanism to perform horizontal movement.
[0016] The forklift battery safety clearance measuring device 1 in this embodiment is mainly used to measure the distance between the metal cover 2 and the battery 3 on the forklift battery. The MCU microcontroller 114 controls the translation mechanism to move horizontally, thereby realizing the horizontal movement of the laser rangefinder 107, and thus achieving linear multi-point measurement of the distance between the metal cover 2 and the battery 3. In practical applications, the number and position of the measuring points can be adjusted as needed to adapt to different measurement requirements, improve measurement accuracy, and reduce the impact of random errors.
[0017] Specifically, the translation mechanism includes a support 108, a lead screw 109, a guide rod 110, and a DC motor 111. The guide rod 110 is horizontally fixed in the measuring chamber. The lead screw 109 is parallel to the guide rod 110, with one end rotatably connected to the housing 101 and the other end connected to the output shaft of the DC motor 111. The DC motor 111, located in the control chamber, is fixed to a partition and electrically connected to an MCU microcontroller 114. The guide rod 110 is slidably connected to the support 108, and the lead screw 109 is threadedly connected to the support 108. A laser rangefinder sensor 107 is mounted on the front side of the support 108, and the rear side of the support 108 contacts the rear side of the housing 101. The MCU microcontroller 114 controls the rotation of the motor, causing the lead screw 109 to rotate. Because the lead screw 109 is threadedly connected to the support 108 and the guide rod 110 guides the support 108, the laser rangefinder sensor 107 on the support 108 can move horizontally.
[0018] Specifically, to facilitate the placement and removal of the device, an embedded handle 103 is provided on the top portion of the housing 101 located in the measuring chamber.
[0019] Specifically, the laser ranging sensor 107 is electrically connected to the MCU microcontroller 114 through the signal conditioning and acquisition circuit 115 and the laser emission control circuit 116, respectively.
[0020] In this embodiment, battery 112 powers the entire device, power switch 105 controls the on / off state of the circuit, MCU microcontroller 114 is model STC12C5A60S2, laser range sensor 107 is model VL6180x laser range module, VL6180x laser range module has built-in laser emission control circuit 116, no additional laser emission drive circuit needs to be designed, and it directly communicates with MCU microcontroller 114 through I2C bus.
[0021] Specifically, the signal conditioning and acquisition circuit 115 includes an A / D converter 1151, a logic gate chip 1152, a signal amplifier 1153, a filter 1154, a first resistor 1155, a second resistor 1156, a first adjustable resistor 1157, and a second adjustable resistor 1158. The input terminal of the signal amplifier 1153 is connected to the laser ranging sensor 107, and the output terminal of the signal amplifier 1153 is connected to the filter 1154. The output terminal of the filter 1154 is connected to the A / D converter 1151. The A / D converter 1151 is connected to the logic gate chip 1152 and the MCU. In the microcontroller 114, the two fixed terminals of the first adjustable resistor 1157 are connected to the positive and negative terminals of the battery 112, respectively. The adjusting terminal of the first adjustable resistor 1157 is connected in series with the second resistor 1156 and the first resistor 1155. The other terminal of the first resistor 1155 is grounded. One fixed terminal of the second adjustable resistor 1158 is connected to the logic power supply input pin of the A / D converter 1151, and the other fixed terminal is connected to the reference voltage output pin of the A / D converter 1151. The adjusting terminal of the second adjustable resistor 1158 is connected to the reference voltage input pin of the A / D converter 1151. The first adjustable resistor 1157 is used to adjust the bias of the A / D converter 1151, and the second adjustable resistor 1158 is used to adjust the reference voltage of the A / D converter 1151. The logic gate chip 1152 is a 74LS00, and the A / D converter 1151 is an AD1674. The weak signal output by the laser rangefinder 107 is amplified by the signal amplifier 1153, denoised by the filter 1154, and digitized by the A / D converter 1151. It is then sent to the MCU for processing and used by the logic gate chip 1152 for logic judgment or signal shaping to improve the stability and reliability of the system.
[0022] like Figure 5As shown, when testing with the parking vehicle battery safety gap measuring device 1 of this embodiment, the parking vehicle battery safety gap measuring device 1 is placed on the battery 3 under the metal cover plate 2. By pressing the power switch 105 to turn on, the MCU microcontroller 114 controls the motor translation mechanism to drive the laser rangefinder 107 to the first measurement point. Then, the MCU microcontroller 114 controls the laser rangefinder 107 to perform distance measurement. After the measurement of the first measurement point is completed, the MCU microcontroller 114 controls the motor translation mechanism to drive the laser rangefinder 107 to the next measurement point. Then, the MCU microcontroller 114 controls the laser rangefinder 107 to perform distance measurement again, and so on to perform linear multi-point measurement. During the detection process, the laser rangefinder 107 sends the distance data to the MCU microcontroller 114 in real time through the signal conditioning and acquisition circuit 115 for data processing. After the measurement is completed, the MCU microcontroller 114 will activate the speaker 106 to emit a prompt sound to remind the personnel that the measurement work is over, and display the final minimum value result on the display screen 104.
[0023] The above description is a preferred embodiment of the present utility model, used to explain the technical solution of the present utility model. Those skilled in the art can also make conventional modifications, equivalent substitutions and improvements within the spirit and principles of the present utility model.
Claims
1. A vehicle battery safety gap measuring device based on TOF technology, comprising a housing, characterized in that: The interior of the housing is divided into a measurement chamber and a control chamber by a partition. The measurement chamber is equipped with a translation mechanism, and a laser rangefinder sensor is installed on the front side of the translation mechanism. The control chamber is equipped with a battery and a controller, which includes an MCU microcontroller and a memory. A strip-shaped measurement hole is opened on the front side of the housing in the measurement chamber, allowing the laser emitted and received by the laser rangefinder sensor to pass through. A power switch and a speaker are embedded on the left side of the housing. A display screen is embedded on the top of the housing in the control chamber. The display screen, power switch, speaker, battery, memory, and laser rangefinder sensor are all electrically connected to the MCU microcontroller. The MCU microcontroller also controls the translation mechanism to perform horizontal movement.
2. The vehicle battery safety gap measuring device based on TOF technology according to claim 1, characterized in that: The translation mechanism includes a support, a lead screw, a guide rod, and a DC motor. The guide rod is horizontally fixed in the measuring chamber. The lead screw is parallel to the guide rod. One end of the lead screw is rotatably connected to the housing, and the other end is connected to the output shaft of the DC motor. The DC motor located in the control chamber is fixed on the partition. The DC motor is electrically connected to the MCU single-chip microcomputer. The guide rod is slidably connected to the support. The lead screw is threadedly connected to the support. A laser rangefinder sensor is installed on the front side of the support, and the rear side of the support contacts the rear side of the housing.
3. The vehicle battery safety gap measuring device based on TOF technology according to claim 1, characterized in that: An embedded handle is provided on the top of the housing, in the portion located within the measuring chamber.
4. The vehicle battery safety gap measuring device based on TOF technology according to claim 1, characterized in that: The laser rangefinder is electrically connected to the MCU microcontroller via a signal conditioning and acquisition circuit and a laser emission control circuit.
5. The vehicle battery safety gap measuring device based on TOF technology according to claim 4, characterized in that: The laser ranging sensor uses a VL6180x laser ranging module.
6. The vehicle battery safety gap measuring device based on TOF technology according to claim 5, characterized in that: The signal conditioning and acquisition circuit includes an A / D converter, a logic gate chip, a signal amplifier, a filter, a first resistor, a second resistor, a first adjustable resistor, and a second adjustable resistor. The input terminal of the signal amplifier is connected to the laser rangefinder, the output terminal of the signal amplifier is connected to the filter, and the output terminal of the filter is connected to the A / D converter. The A / D converter is connected to the logic gate chip and the MCU microcontroller. The two fixed terminals of the first adjustable resistor are connected to the positive and negative terminals of the battery, respectively. The adjustment terminal of the first adjustable resistor is connected in series with the second resistor and the first resistor. The other end of the first resistor is grounded. One fixed terminal of the second adjustable resistor is connected to the logic power supply input pin of the A / D converter, and the other fixed terminal of the second adjustable resistor is connected to the reference voltage output pin of the A / D converter. The adjustment terminal of the second adjustable resistor is connected to the reference voltage input pin of the A / D converter. The first adjustable resistor is used to adjust the bias of the A / D converter, and the second adjustable resistor is used to adjust the reference voltage of the A / D converter.