Pulse output device and pulse output system
By designing a multi-channel pulse output device and system, the problem of low efficiency in high-temperature durability verification of automotive ignition coils was solved, enabling simultaneous measurement of multiple products, improving inspection efficiency and shortening verification time.
Patent Information
- Application Number
- CN202423079488.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-12
AI Technical Summary
In the high-temperature durability verification process of automotive ignition coils, the existing technology has low testing efficiency, resulting in long product verification time and affecting the research and development and production progress.
Design a pulse output device and system to simultaneously measure multiple products through multi-channel pulse output, including a central processing module, a pulse output processing module, a protection circuit, and a multi-channel pulse output interface, capable of sending precise pulse signals to control the operation of multiple coils under test.
It improved the efficiency of product verification, shortened the verification-to-production time, and enhanced the accuracy and reliability of testing.
Smart Images
Figure CN223498030U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulse output technology, and in particular to a pulse output device and a pulse output system. Background Technology
[0002] Before a new automotive ignition coil is designed or mass-produced, it is usually produced in small batches and a series of routine verifications are conducted, one of which is high-temperature durability verification.
[0003] Typically, a certain percentage of products from a batch are randomly selected and placed in a high-temperature durability test chamber. Power is connected, and the chamber is run normally while being heated. Once the specified temperature is reached, it is maintained at a constant temperature. This is used to verify the product's performance stability during prolonged continuous operation in a high-temperature environment. Verification conditions: Continuous operation under power: >500 hours, temperature: +125℃.
[0004] Because high-temperature durability verification takes a long time, and there are many types of products that need to be verified, as well as many batches of mass-produced products, there are often queues of various products waiting for verification, resulting in low inspection efficiency and affecting the normal progress of the company's R&D work and mass production. Utility Model Content
[0005] The purpose of this invention is to provide a pulse output device and a pulse output system. By designing multiple pulse outputs, multiple products can be measured simultaneously, which improves inspection efficiency and shortens the product verification and production time.
[0006] In a first aspect, this utility model provides a pulse output device, including: a central processing module and a pulse output processing module;
[0007] The pulse output processing module includes: protection circuitry and a multi-channel pulse output interface;
[0008] The protection circuit is connected to the pulse output interface;
[0009] The pulse output interface is connected to multiple coils under test;
[0010] The central processing module is used to send working signals to the pulse output processing module, which then sends pulse signals through the pulse output interface based on the working signals.
[0011] In some preferred embodiments of this utility model, the central processing module includes: a delay unit;
[0012] The delay unit is used to record the delay time;
[0013] The time interval between multiple pulse signals.
[0014] In some preferred embodiments of this utility model, the pulse output processing module further includes: a pulse level adjustment circuit and a driving transistor;
[0015] The pulse level adjustment circuit, the driving transistor, and the protection circuit are connected in sequence.
[0016] In some preferred embodiments of this utility model, the pulse output device further includes: a button module;
[0017] The button module is connected to the central processing module;
[0018] The button module is used to respond to external operation signals and send the external operation signals to the central processing module.
[0019] In some preferred embodiments of this utility model, the button module includes: a route switch button, a setting button, a displacement button, an increment button, and a decrement button.
[0020] In some preferred embodiments of this utility model, the pulse output device further includes: a display module;
[0021] The display module is connected to the central processing module;
[0022] The display module is used to display the operating information of the pulse output device.
[0023] In some preferred embodiments of this invention, the operating information includes at least one of the following: number of channels, pulse, and frequency.
[0024] In some preferred embodiments of this utility model, the pulse output processing module is provided with 4 pulse output interfaces.
[0025] In some preferred embodiments of this invention, the pulse output interface is connected to 10 coils to be tested.
[0026] Secondly, this utility model provides a pulse output system, including: an external controller and the pulse output device provided in the first aspect above.
[0027] This utility model provides a pulse output device and a pulse output system, including: a central processing module and a pulse output processing module; the pulse output processing module includes: a protection circuit and a multi-channel pulse output interface; the protection circuit is connected to the pulse output interface; the pulse output interface is connected to multiple coils under test; the central processing module is used to send working signals to the pulse output processing module, and the pulse output processing module sends pulse signals through the pulse output interface based on the working signals; by designing multi-channel pulse output, multiple products can be measured simultaneously, improving inspection efficiency and shortening product verification and production time. Attached Figure Description
[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0029] Figure 1 A schematic diagram of a pulse output device provided in an embodiment of this utility model;
[0030] Figure 2 A schematic diagram of pulse output provided for an embodiment of this utility model;
[0031] Figure 3 Another pulse output schematic diagram is provided for an embodiment of this utility model;
[0032] Figure 4 A schematic diagram of the connection relationship for testing an ignition coil is provided for an embodiment of this utility model;
[0033] Figure 5 A schematic diagram of a button module provided for an embodiment of this utility model;
[0034] Figure 6 This is a schematic diagram of an LED display principle provided for an embodiment of the present utility model.
[0035] Icons: 10 - Pulse output device; 100 - Central processing module; 200 - Pulse output processing module; 210 - Protection circuit; 300 - Coil under test; 400 - System power supply. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0040] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0042] The ignition coil works on the principle of an electromagnetic induction transformer, converting low-voltage electricity into high-voltage electricity. When the primary coil of the ignition coil is powered on, current flows through the primary coil, generating a magnetic field, which stores magnetic energy in the core. When the primary coil circuit is disconnected, the magnetic field decays rapidly, and this rapidly changing magnetic field induces a high voltage in the secondary coil. The ignition coil repeatedly stores and discharges energy at a certain frequency, converting the vehicle's low-voltage electricity into high-voltage electricity to ignite the combustible mixture in the cylinder, thus enabling the engine to work normally.
[0043] The ignition coil operates intermittently and in a pulsed manner. Therefore, during product durability testing, a multi-channel pulse signal transmitter capable of outputting a set frequency and voltage width is used.
[0044] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0045] Example 1
[0046] This utility model embodiment provides a pulse output device 10, see [link]. Figure 1 The schematic diagram shown in this embodiment of the present invention provides a pulse output device. The pulse output device 10 includes: a central processing module 100 and a pulse output processing module 200; the pulse output processing module 200 includes: a protection circuit 210 and a multi-channel pulse output interface; the protection circuit 210 is connected to the pulse output interface; the pulse output interface is connected to multiple test coils 300; the central processing module 100 is used to send working signals to the pulse output processing module 200, and the pulse output processing module 200 sends pulse signals through the pulse output interface based on the working signals.
[0047] Specifically, the central processing module 100 is connected to external devices and can receive external operation signals. Common operation signals include output pulse level, pulse width, pulse delay time, etc. The central processing module 100 generates a working signal based on the external operation signal, and controls the pulse output processing module 200 to output pulses through the pulse output interface. The pulse output interface is connected to the ignition coil under test to realize the ignition test. The other end of the ignition coil is connected to the system power supply 400 to provide energy for the ignition test.
[0048] The protection circuit 210 is connected to the pulse output interface and typically includes functions such as reverse connection protection, lightning strike protection, and pulse group interference protection. These functions are usually implemented through voltage limiting and current limiting. In abnormal situations (such as overload or short circuit), the power supply can be cut off or the current can be limited in time.
[0049] The central processing module 100 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this utility model. The general-purpose processor can be a microprocessor or any conventional processor.
[0050] See Figure 2 The schematic diagram of a pulse output provided by the present invention shown in the embodiment is provided. The pulse output frequency is 50 Hz, the pulse interval time is 20 milliseconds, and the pulse width is 2 milliseconds. In the embodiment of the present invention, the pulse output device 10 can simultaneously output pulses with a pulse width of 2 milliseconds and a frequency of 50 Hz through multiple pulse output interfaces.
[0051] Furthermore, in some preferred embodiments of this utility model, the central processing module 100 includes: a delay unit; the delay unit is used to record the delay time; and the interval delay time between multiple pulse signals.
[0052] Specifically, the delay unit in the central processing module 100 is used to record the delay time to ensure the transmission interval between multiple pulse signals. By precisely controlling the output time of the pulse signals, the synchronization and reliability of the system are improved. The delay unit times the working signal based on preset delay parameters. When the set delay time is reached, it triggers the pulse output interface to send a pulse signal to the pulse output processing module 200, achieving precise control.
[0053] During the transmission of multiple pulse signals, the delay unit records and adjusts the transmission interval of each signal to avoid signal collisions and interference. This ensures that each coil under test (DUT) receives an independent and accurate pulse signal. The use of the delay unit significantly improves the accuracy and stability of the pulse output. By precisely controlling the signal interval, system errors are reduced, improving the overall accuracy and reliability of the test.
[0054] See Figure 3 The embodiment of this utility model shown provides another pulse output schematic diagram. Taking a 4-channel pulse output interface as an example, each of the 4 independent pulse outputs refers to... Figure 2 The diagram shown illustrates the pulse output, with each pulse output separated by a 5-millisecond interval. The pulses are time-division multiplexed to control the start and stop of ignition coil energy storage and discharge, ensuring that only one ignition coil connected to each of the four pulse output ports can operate simultaneously. This reduces the power load requirements and thus minimizes instantaneous power consumption.
[0055] See Figure 4 The schematic diagram of the connection relationship for ignition coil testing provided by this utility model embodiment shows that multiple coils are connected in four ways. When the number of test products is large, which increases the total power consumption, the pulse time-division output device considers adjusting the working order of the test ignition coils by controlling the pulse delay output, so that only some coils (the coil with one pulse output) can work at the same time, thereby reducing the total power demand.
[0056] Furthermore, in some preferred embodiments of this utility model, the pulse output processing module 200 further includes: a pulse level adjustment circuit and a driving transistor; the pulse level adjustment circuit, the driving transistor and the protection circuit 210 are connected in sequence.
[0057] Specifically, the pulse level adjustment circuit is used to adjust the level of the pulse signal. By precisely controlling the voltage amplitude of the pulse signal, it ensures that the output signal meets the requirements of the coil under test (300), avoiding overvoltage or undervoltage phenomena. The pulse level adjustment circuit includes an adjusting resistor and a comparator, and can achieve an adjustable output pulse level from 4V to 12V.
[0058] The base of the driver transistor is connected to the output of the pulse level adjustment circuit, the emitter of the driver transistor is connected to the input of the protection circuit 210, and the collector of the driver transistor is connected to a 12V DC voltage. The driver transistor functions as an amplifier and switch in the pulse output processing module 200. It can convert low-power control signals into high-power pulse signals to drive multiple test coils 300.
[0059] Furthermore, in some preferred embodiments of this utility model, the pulse output device 10 further includes: a button module; the button module is connected to the central processing module 100; the button module is used to respond to external operation signals and send the external operation signals to the central processing module 100.
[0060] For details, see Figure 5 The schematic diagram of a button module provided in this embodiment of the present invention allows users to control and set parameters of the pulse output device 10 through button operation, thereby improving the flexibility and operability of the system.
[0061] Furthermore, in some preferred embodiments of this utility model, the button module includes: a route switch button, a setting button, a displacement button, an increment button, and a decrement button.
[0062] Specifically, the aforementioned buttons allow for individual adjustment of each pulse signal, and the circuit switching button allows for switching between pulse signal paths. In some preferred embodiments of this invention, the circuit switching button is used to select different pulse output paths. By pressing this button, the user can switch between multiple pulse signal output channels, ensuring independent testing and control of different coils.
[0063] The setting button allows selection of adjustment targets, such as adjusting the pulse level, output pulse width, or voltage frequency. In some preferred embodiments of this invention, the setting button is used to enter the parameter setting mode. Users can use this button to adjust parameters such as the frequency and amplitude of the pulse signal to meet different testing needs and improve the system's flexibility and applicability.
[0064] The displacement keys can switch between adjusting digits. For example, frequency adjustment includes three digits, and the displacement keys can be used to directly adjust from the ones place to the hundreds place, without having to increment the value in the ones place one by one. In some preferred embodiments of this invention, the displacement keys are used to move the cursor position in parameter setting mode. Users can use this key to switch between different parameter options, facilitating the adjustment and modification of specific parameters and improving operational efficiency.
[0065] The system enhances adjustment flexibility with increment and decrement buttons for increasing or decreasing values. The increment button increases the value of the currently selected parameter, allowing users to gradually increase parameters such as the pulse signal frequency or amplitude for precise adjustment and ensure accurate test results. The decrement button decreases the value of the currently selected parameter, allowing users to gradually decrease parameters such as the pulse signal frequency or amplitude for flexible adjustment of test conditions to adapt to different testing environments.
[0066] In some preferred embodiments of this utility model, the parameters of each pulse can be set and modified via buttons, such as:
[0067] Time-division delayed pulse output with 1-4 pulse widths (0.1-5Ms) and a fixed frequency of 50Hz (time-division delayed output), or general-purpose 5-8 pulse widths (0.1-99Ms) and a frequency (setting range: 1-500Hz).
[0068] Furthermore, in some preferred embodiments of this utility model, the pulse output device 10 further includes: a display module; the display module is connected to the central processing module 100; the display module is used for the operation information of the pulse output device 10.
[0069] For details, see Figure 6 The schematic diagram shown in this embodiment of the present invention illustrates an LED display principle. The display module is used to display the working information of the pulse output unit 10 in real time. Through an intuitive interface, users can understand the current system status, parameter settings, and test results, improving the convenience and transparency of operation. The display module is directly connected to the central processing module 100, ensuring that working information can be quickly and accurately transmitted to the display interface. This connection method improves the system's response speed and stability, enabling users to monitor the equipment's operation in real time.
[0070] The display module serves as an information feedback mechanism within the system, enabling users to promptly understand the operating status and parameter changes of the pulse output unit 10. Through the display module, users can easily perform fault diagnosis and performance evaluation, improving equipment maintenance efficiency.
[0071] Furthermore, in some preferred embodiments of this invention, the operating information includes at least one of the following: number of channels, pulse, and frequency.
[0072] Specifically, for example, if the channel number is displayed as "1", the pulse width is displayed as "2.0", and the frequency is displayed as "050", it means that the current pulse is the first one, the pulse width is 2.0 milliseconds, and the pulse frequency is 50 Hz.
[0073] Furthermore, in some preferred embodiments of this utility model, the pulse output processing module 200 is provided with 4 pulse output interfaces.
[0074] Furthermore, in some preferred embodiments of this utility model, the pulse output interface is connected to 10 test coils 300.
[0075] Specifically, by setting up 4 pulse output interfaces, with each pulse output interface connected to 10 test coils 300, 40 ignition coils can be tested simultaneously each time, greatly increasing the testing efficiency.
[0076] This utility model provides a pulse output device 10, including: a central processing module 100 and a pulse output processing module 200; the pulse output processing module 200 includes: a protection circuit 210 and a multi-channel pulse output interface; the protection circuit 210 is connected to the pulse output interface; the pulse output interface is connected to multiple test coils 300; the central processing module 100 is used to send working signals to the pulse output processing module 200, and the pulse output processing module 200 sends pulse signals through the pulse output interface based on the working signals; by designing multi-channel pulse output, multiple products can be measured simultaneously, improving inspection efficiency and shortening product verification and production time.
[0077] Example 2
[0078] Based on the above embodiments, this utility model provides a pulse output system, including: an external controller and a pulse output device 10 provided in the above embodiments.
[0079] Specifically, the external controller can send data values to the pulse output device 10 so that the pulse output device 10 can perform coil detection according to the sent data.
[0080] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the system described above can be referred to the corresponding process in the aforementioned pulse output device 10 embodiment, and will not be repeated here.
[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A pulse output device, characterized in that, include: Central processing module and pulse output processing module; The pulse output processing module includes: a protection circuit and a multi-channel pulse output interface; The protection circuit is connected to the pulse output interface; The pulse output interface is connected to multiple coils under test; The central processing module is used to send a working signal to the pulse output processing module, and the pulse output processing module sends a pulse signal through the pulse output interface based on the working signal; The central processing module includes: a delay unit; The delay unit is used to record the delay time; The delay time is the interval between multiple pulse signals; The pulse output processing module further includes: a pulse level adjustment circuit and a driving transistor; The pulse level adjustment circuit, the driving transistor, and the protection circuit are connected in sequence.
2. The pulse output device according to claim 1, characterized in that, The pulse output device also includes: a button module; The button module is connected to the central processing module; The button module is used to respond to external operation signals and send the external operation signals to the central processing module.
3. The pulse output device according to claim 2, characterized in that, The button module includes: a route change button, a setting button, a displacement button, an increment button, and a decrement button.
4. The pulse output device according to claim 1, characterized in that, The pulse output device further includes: a display module; The display module is connected to the central processing module; The display module is used to display the operating information of the pulse output device.
5. The pulse output device according to claim 4, characterized in that, The working information includes at least one of the following: number of channels, pulse, and frequency.
6. The pulse output device according to claim 1, characterized in that, The pulse output processing module is equipped with 4 pulse output interfaces.
7. The pulse output device according to claim 6, characterized in that, The pulse output interface is connected to 10 coils under test.
8. A pulse output system, characterized in that, include: An external controller and a pulse output device according to any one of claims 1 to 7.