An integrated voice pressure test and polarity reversal detection automation tooling device

Abstract

The application discloses an automatic tool equipment integrating sound pressure testing and polarity reverse connection detection, a closed test box is formed through the mechanical structure of a fixing tool and a test tool, sound absorption material is used to resist interference, high-precision sound pressure detection is realized, and the positive connection current detection and reverse connection current testing are realized by using a control equipment, a current detector and a relay module, so that the products with abnormal current can be screened out as fault products. The automatic tool equipment has the advantages of convenience, high cost performance, environmental anti-interference, automation, high precision, 100% online detection and the like, and can reduce the risk of defective products flowing out, so as to overcome the defects of the prior art.

Description

Technical Field

[0001] This application belongs to the field of automotive alarm technology, and in particular relates to an automated tooling device that integrates sound pressure testing and polarity reverse connection detection. Background Technology

[0002] In the automotive alarm manufacturing industry, existing production lines lack sound pressure level testing and polarity reversal testing stations. Traditional sound pressure level testing includes two methods: manual sampling and laboratory acoustic testing.

[0003] 1. The manual sampling inspection mode, which uses a decibel meter to randomly sample and inspect products, leads to the following problems:

[0004] (1) Insufficient testing coverage: It is impossible to achieve 100% full inspection, and there is a risk that defective products with abnormal sound pressure will enter the market;

[0005] (2) Poor anti-interference ability: The noise of the production line environment directly affects the measurement accuracy of the manual decibel meter, and there is a risk of hearing damage from manual operation;

[0006] (3) Lack of polarity detection: The production line does not have a polarity reverse connection detection process, which means that some product faults (including but not limited to faults caused by incorrect polarity) can only be discovered through feedback from end customers, resulting in high quality risks;

[0007] (4) Low detection efficiency: Sound pressure testing and polarity testing need to be carried out independently by separate equipment, which increases equipment costs and testing cycle, and cannot intercept defective products in real time.

[0008] 2. While laboratory acoustic testing can provide high-precision detection, its technical solutions have the following limitations:

[0009] (1) Difficulty in equipment integration: It requires a professional soundproof room and large-scale testing equipment, which cannot meet the online testing needs of the production line;

[0010] (2) High testing costs: The cost of equipment procurement and maintenance is high, and the products need to be removed from the production line and transported to the laboratory, which leads to a longer testing cycle;

[0011] (3) High environmental dependence: The test accuracy is heavily dependent on the soundproof environment, making it difficult to meet the real-time detection requirements under dynamic production conditions on the production line.

[0012] In summary, existing technical solutions have significant shortcomings in terms of detection coverage, production line adaptability, cost efficiency, and quality risk control. Utility Model Content

[0013] The purpose of this application is to provide an automated tooling device that integrates sound pressure testing and polarity reversal detection, achieving convenient, cost-effective, environmentally resistant, automated, high-precision, and 100% online detection, reducing the risk of defective products leaving the site, and overcoming the shortcomings of existing technical solutions.

[0014] To achieve the above-mentioned objectives, the technical solution adopted in this application is as follows:

[0015] This application provides an automated tooling device that integrates sound pressure testing and polarity reversal detection, including:

[0016] The fixture includes a muffler base with a first through hole and a surrounding structure. The middle of the surrounding structure is used to install and fix the car alarm, and a power connector fixing device is provided on one side of the surrounding structure.

[0017] The test fixture includes a frame with a second through hole at the top. A fixing fixture is used to fix the frame to the top and make the first through hole and the second through hole correspond to form a closed test box. The inner side of the frame is provided with sound-absorbing material, the inner side of the bottom of the frame is provided with a sound pressure sensor, and the bottom of the frame is also provided with a wire hole.

[0018] The power supply includes a relay module, and the power supply voltage is connected to the positive and negative terminals of the car alarm through the relay module.

[0019] A current detector is used to detect the current of a car alarm; the current detector is also connected to control equipment.

[0020] The control device connects to a relay module, a current detector, and a sound pressure sensor. The control device is used to control the car alarm to be connected to the power supply in either the forward or reverse direction via the relay module, and to receive and store the reverse current and forward current detected by the current detector, as well as the sound pressure detected by the sound pressure sensor under the forward state.

[0021] In some embodiments, sound-absorbing cotton is also filled between the muffler base and the car alarm in the middle of the enclosure structure.

[0022] In some embodiments, the relay module includes a first relay and a second relay. The output contacts of the first relay are respectively connected to the positive terminal, negative terminal, and positive terminal of the power supply of the car alarm, and the output contacts of the second relay are respectively connected to the negative terminal, positive terminal, and negative terminal of the power supply of the car alarm.

[0023] In some embodiments, the control device is a host computer, which is connected to a power source via a serial port and uses this connection to control the relay module.

[0024] In some embodiments, if the reverse current, the positive current, or the sound pressure is outside the preset range, the host computer determines that the car alarm is faulty.

[0025] In some embodiments, the sound-absorbing material is polyurethane foam.

[0026] Compared with the prior art, the beneficial effects of the embodiments of this application are:

[0027] This application provides an automated tooling device integrating sound pressure testing and reverse polarity detection. The device forms a closed test chamber through the mechanical structure of the fixed and testing fixtures, and utilizes sound-absorbing materials to resist interference, achieving high-precision sound pressure detection. It uses control equipment, a current detector, and a relay module to achieve positive current detection and reverse current testing, allowing products with abnormal current to be screened as faulty products. This automated tooling device has advantages such as convenient implementation, high cost-effectiveness, environmental interference resistance, automation, high precision, and 100% online detection, reducing the risk of defective products leaving the site and overcoming the shortcomings of existing technical solutions. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the fixture provided in an embodiment of this application is shown.

[0030] Figure 2 A schematic diagram of the test fixture provided in an embodiment of this application is shown.

[0031] Figure 3 It shows Figure 2 A sectional view.

[0032] Figure 4 The diagram shows the principle of polarity reversal control.

[0033] Figure 5 A schematic diagram of the workflow of the automated tooling equipment integrating sound pressure testing and polarity reversal detection provided in the embodiments of this application is shown.

[0034] Figure 6 A schematic block diagram of an automated tooling device integrating sound pressure testing and polarity reversal detection, provided in an embodiment of this application, is shown.

[0035] Illustration:

[0036] 10. Fixture; 11. Silencing base; 111. First through hole; 12. Enclosure structure; 13. Fixture device; 20. Test fixture; 21. Frame; 211. Second through hole; 22. Sound-absorbing material. Detailed Implementation

[0037] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0039] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] To illustrate the technical solution described in this application, specific embodiments are provided below.

[0041] Please see Figures 1 to 6 As shown, this application embodiment provides an automated tooling device that integrates sound pressure testing and polarity reversal detection, including:

[0042] The fixture 10 includes a silencing base 11 with a first through hole 111. A surrounding structure 12 surrounds the first through hole 111, with the center of the surrounding structure 12 used to mount and fix the car alarm. A power connector fixing device 13 is located on one side of the surrounding structure 12. The surrounding structure 12 can fix the product and also make the sound pressure test of the product more accurate.

[0043] The test fixture 20 includes a frame 21. The top of the frame 21 has a second through hole 211. The fixing fixture 10 is used to fix it on the top of the frame 21, so that the first through hole 111 and the second through hole 211 correspond to each other to form a closed test box. The inner side of the frame 21 is provided with sound-absorbing material 22. The inner side of the bottom of the frame 21 is provided with a sound pressure sensor. The bottom of the frame 21 is also provided with a wire hole.

[0044] The power supply includes a relay module, through which the power supply voltage is connected to the positive and negative terminals of the car alarm.

[0045] A current detector is used to detect the current of a car alarm; the current detector is also connected to control equipment.

[0046] The control device connects to a relay module, a current detector, and a sound pressure sensor. The control device is used to control the car alarm to be connected to the power supply in either the forward or reverse direction via the relay module, and to receive and store the reverse current and forward current detected by the current detector, as well as the sound pressure detected by the sound pressure sensor under the forward state.

[0047] As an example, sound-absorbing cotton is also filled between the muffler base 11 and the car alarm in the middle of the enclosure structure 12, which can reduce the damage to employees' hearing caused by the sound of the product itself.

[0048] As an example, the relay module includes a first relay K1 and a second relay K2. The output contacts of the first relay K1 are connected to the positive, negative and positive terminals of the car alarm and the power supply, respectively. The output contacts of the second relay K2 are connected to the negative, positive and negative terminals of the car alarm and the power supply, respectively.

[0049] As an example, the control device is a host computer, which is connected to the power supply via a serial port and uses this connection to control the relay module.

[0050] As an example, if the reverse current, positive current, or sound pressure is outside the preset range, the host computer will determine that the car alarm is faulty.

[0051] As an example, sound-absorbing material 22 is polyurethane foam.

[0052] The working principle of the automated tooling equipment integrating sound pressure testing and polarity reversal detection provided in this application embodiment is as follows:

[0053] (1) Install and fix the product (car alarm) in the middle of the enclosure structure 12. For example, place the bottom (sound-emitting part) of the product on the muffler base 11. Then fix the entire fixing fixture 10 to the second through hole 211 of the test fixture 20. For example, use screws to pass through the eight screw holes at the four corners of the muffler base 11 and fix it to the top of the frame 21. After fixing, a sealed test chamber is formed.

[0054] (2) Connected via a power connector, which is fixed by a fixing device 13. For example, one end of the power connector is connected to the positive and negative terminals of the product, and the other end is connected to the output contacts of the first and second relays.

[0055] (3) Using cables and wire holes, connect the sound pressure sensor to the control device to transmit the measured sound pressure data to the control device.

[0056] (4) The current detector is connected to either the positive or negative terminal of the car alarm, as long as it can measure the current of the car alarm. The current detector is also connected to the control device to transmit the detected current to the control device.

[0057] (5) The control device is connected to a relay module to control the on / off state of the first relay K1 and the second relay K2. Specifically, the power supply has a power chip inside that controls the on / off state of the first relay K1 and the second relay K2. The control device then sends a switching command to the power chip to control the on / off state of the first relay K1 and the second relay K2. For example, when the first relay K1 and the second relay K2 are energized simultaneously, the positive terminal VCC of the power supply is connected to the positive terminal of the product, and the negative terminal GND of the power supply is connected to the negative terminal of the product, achieving the correct connection of the product. When the first relay K1 and the second relay K2 are de-energized simultaneously, the positive terminal VCC of the power supply is connected to the negative terminal of the product, and the negative terminal GND of the power supply is connected to the positive terminal of the product, achieving the reverse connection of the product.

[0058] (6) Therefore, the control device first de-energizes both the first relay K1 and the second relay K2, reversing the product connection. The current detector detects and records the reverse current. Then, the control device energizes both the first relay K1 and the second relay K2, reversing the product connection and activating the car alarm. The current detector detects and records the current in the correct connection state. Simultaneously, the sound pressure sensor records the sound pressure in the correct connection state and transmits it to the control device for recording and storing the correct connection sound pressure.

[0059] (7) The reverse current, forward current, and forward sound pressure can be used to determine whether a product is faulty. For example, a normal product has a normal value or a preset range for its reverse current, forward current, and forward sound pressure. If all are normal values ​​or within the normal range, the product is normal; otherwise, the product is faulty. It should be understood that this determination can be made manually or by the control equipment itself. As an example, the normal values ​​for reverse current, forward current, and forward sound pressure are 0.005A, 0.952A, and 111dB, respectively.

[0060] It should be noted that, Figure 5 The workflow shown is merely an example of one embodiment and does not represent the order of implementation of this application.

[0061] For example, as an example, Figure 5 The sequence shown is: test reverse current, test positive current, test positive sound pressure.

[0062] For example, as another example, the working sequence could also be: test positive current, positive sound pressure, and reverse current.

[0063] In some embodiments of this application, when the control device is a host computer, such as a computer, the computer can connect to the power chip via serial communication and send commands to the power chip to control the on / off state of the first relay K1 and the second relay K2. Specific control principles can be found in the prior art and will not be elaborated upon here.

[0064] In some embodiments of this application, when the control device is a host computer, the host computer can automatically determine whether the product is faulty based on the obtained reverse current, forward current, forward sound pressure, and their normal values ​​or preset ranges. Specific control principles can be found in the prior art, and will not be elaborated upon here.

[0065] In summary, the automated tooling equipment integrating sound pressure testing and reverse polarity detection provided in this application embodiment forms a closed test chamber through the mechanical structure of the fixed tooling 10 and the test tooling 20, and utilizes sound-absorbing material 22 to resist interference, achieving high-precision sound pressure detection. It utilizes control equipment, a current detector, and a relay module to achieve positive current detection and reverse current testing, allowing products with abnormal current to be screened as faulty products. This automated tooling equipment integrates sound pressure acquisition and tooling pressing in a closed chamber, balancing sound insulation and safety. It controls current polarity switching via serial communication to achieve synchronous testing of sound pressure and reverse polarity. The host computer can automatically collect data and determine the results, intercepting defective products with abnormal sound pressure or current. This automated tooling equipment has advantages such as convenient implementation, high cost-effectiveness, environmental interference resistance, automation, high precision, and 100% online detection, which can reduce the risk of defective products leaving the site and overcome the shortcomings of existing technical solutions.

[0066] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An automated tooling device integrating sound pressure testing and polarity reversal detection, characterized in that, include: The fixture includes a muffler base, on which a first through hole is provided, and a surrounding structure is provided around the first through hole. The middle of the surrounding structure is used to install and fix a car alarm, and a power plug fixing device is provided on one side of the surrounding structure. The testing fixture includes a frame, the top of which has a second through hole. The fixing fixture is used to fix the frame to the top of the frame and make the first through hole and the second through hole correspond to form a closed test box. The inner side of the frame is provided with sound-absorbing material, the inner bottom of the frame is provided with a sound pressure sensor, and the bottom of the frame is also provided with a wire hole. The power supply includes a relay module, and the power supply voltage is connected to the positive and negative terminals of the car alarm through the relay module. A current detector is used to detect the current of the car alarm, and the current detector is also connected to a control device; A control device is provided, which is connected to the relay module, the current detector, and the sound pressure sensor. The control device is used to control the car alarm to be connected to the power supply in either a positive or negative direction via the relay module, and to receive and store the reverse current and positive current detected by the current detector, as well as the sound pressure detected by the sound pressure sensor in the positive connection state.

2. The automated tooling equipment integrating sound pressure testing and polarity reversal detection according to claim 1, characterized in that, In the middle of the enclosure structure, sound insulation cotton is also filled between the silencing base and the car alarm.

3. The automated tooling equipment integrating sound pressure testing and polarity reversal detection according to claim 1, characterized in that, The relay module includes a first relay and a second relay. The output contacts of the first relay are respectively connected to the positive terminal, negative terminal, and positive terminal of the power supply of the car alarm. The output contacts of the second relay are respectively connected to the negative terminal, positive terminal, and negative terminal of the power supply of the car alarm.

4. The automated tooling equipment integrating sound pressure testing and polarity reversal detection according to claim 1, characterized in that, The control device is a host computer, which is connected to the power supply via a serial port and uses this connection to control the relay module.

5. The automated tooling equipment integrating sound pressure testing and polarity reversal detection according to claim 4, characterized in that, If the reverse current, the positive current, or the sound pressure is outside the preset range, the host computer determines that the car alarm is faulty.

6. The automated tooling equipment integrating sound pressure testing and polarity reversal detection according to claim 1, characterized in that, The sound-absorbing material is polyurethane foam.

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