Automobile seat comprehensive performance test platform and test method

Abstract

The present application relates to the technical field of automobile seat testing, and particularly relates to a kind of automobile seat comprehensive performance test platform and test method, comprising: main control unit;Tooling module, clamping and fixing the automobile seat to be measured, receiving the clamping control instruction issued by main control unit, and transmitting the clamping state signal of automobile seat to main control unit;Aging test module, receiving the drive control instruction of main control unit, to drive automobile seat to execute aging cycle action;Electric performance detection module, receiving the synchronous control instruction of main control unit, and synchronously collecting the electrical performance parameters of automobile seat in the execution process of aging cycle action.The automobile seat to be measured in the present application can complete aging durability and electrical performance full item detection simultaneously by clamping and fixing only once, without needing to transfer and repeat loading and unloading tooling in multiple independent devices, which can improve production line circulation efficiency, eliminate the risk of bumping caused by multiple transfers and repeated clamping of seat, and produce secondary damage.

Description

Technical Field

[0001] This invention relates to the field of automotive seat testing technology, and in particular to an automotive seat comprehensive performance testing platform and testing method. Background Technology

[0002] As car seats are upgraded towards electrification and intelligence, the products often integrate components such as adjustment motors, heating, ventilation, massage, CAN / LIN bus and seat ECU interaction. To ensure the quality of the final product delivery, accelerated aging durability testing and full electrical performance testing of the above components must be completed simultaneously before leaving the factory.

[0003] In current testing methods, aging test machines, electrical testers, and bus diagnostic equipment are all independent of each other. The seats need to be transferred multiple times between these devices, and after being transferred to their positions, they need to be repeatedly mounted and dismounted on the tooling. This results in low production line efficiency, and the bumps and knocks during the transfer process can easily cause secondary damage to the seat surface, slide rails, or wiring harnesses.

[0004] In addition, the method of multiple devices operating independently and entering data independently often makes it difficult to coordinate the cycle time, which increases the difficulty of matching the testing process with the automated mass production line. Summary of the Invention

[0005] This invention provides a comprehensive performance testing platform and method for automotive seats, which can effectively solve the problems in the background art.

[0006] The technical solution provided by this invention is as follows: A comprehensive performance testing platform for automotive seats, comprising: Main control unit; The tooling module clamps and fixes the car seat to be tested. The tooling module is connected to the main control unit, receives clamping control commands issued by the main control unit, and sends back the clamping status signal of the car seat to the main control unit. An aging test module is connected to the main control unit and receives drive control commands from the main control unit to drive the car seat to perform aging cycle actions. An electrical performance testing module is connected to the main control unit, receives synchronous control commands from the main control unit, and synchronously collects the electrical performance parameters of the car seat during the execution of the aging cycle.

[0007] Furthermore, the tooling module includes a universal base slide rail, a fixture assembly, and a sensing component; The universal base slide rail is fixedly installed at the test station; The clamp assembly comprises several units, which are slidably mounted on the universal base slide rail for clamping and fixing the bottom slide rail of the car seat; The sensing component is located at the detection end of the universal base slide rail to identify the clamping status signal of the car seat.

[0008] Furthermore, the aging test module includes a drive output unit and a scheme management unit; The drive output unit is electrically connected to the adjustment motor, heating module, ventilation module and massage mechanism of the car seat, and outputs corresponding drive signals; The scheme management unit defines and stores several action schemes, and the driving signal is based on the action scheme.

[0009] Furthermore, the drive output unit includes a regulating motor drive channel, a heating module drive channel, and a ventilation and massage hybrid drive channel; Each drive channel is equipped with a load identification circuit to identify the load type and rated parameters of the corresponding component under test, and upload the rated parameters to the solution management unit; When configuring the action plan, the scheme management unit sets a staggered interval for the start-up timing of each drive channel according to the rated parameters, so that the current surge generated by the simultaneous start-up of multiple components under test is within a set range.

[0010] Furthermore, the load identification circuit includes a current sampling resistor, a signal processing and amplification unit, an AD sampling chip, a constant voltage detection source, and a switching relay; The current sampling resistor is connected in series in the main power supply circuit of the drive channel, and a main circuit switch is set between it and the main drive power supply. The output terminal of the current sampling resistor is connected to the AD sampling chip through the signal operation and amplification unit. The output terminal of the AD sampling chip is connected to the scheme management unit, and the sampled data after analog-to-digital conversion is uploaded to the scheme management unit. The constant voltage detection source is connected in parallel to the output load terminal via the switch relay.

[0011] Furthermore, the load identification circuit sequentially completes the identification of the load type and rated parameters through a static identification stage and a dynamic verification stage, respectively.

[0012] Furthermore, the scheme management unit sets a staggered interval for the startup timing of each drive channel based on the rated parameters, including: The scheme management unit extracts the peak current and start-up impact duration of the component under test corresponding to each drive channel at the moment of startup, and calculates the total peak current of all drive channels starting simultaneously. The scheme management unit presets a total peak current threshold; When the total peak current exceeds the total peak current threshold, the scheme management unit sorts each of the drive channels in order of shortest to longest start-up impact duration to determine the start-up priority, and sets the start-up interval duration of adjacent drive channels to the start-up impact duration of the previous drive channel. Otherwise, all the aforementioned drive channels will start synchronously.

[0013] Furthermore, the electrical performance testing module includes several synchronous acquisition channels, each corresponding to one of the electrical performance parameters; The main control unit outputs a unified trigger clock signal to control all synchronous acquisition channels to start sampling and transmit data synchronously.

[0014] Furthermore, the timing synchronization error of the transmission mode of each of the aforementioned synchronous acquisition channels is less than 1ms.

[0015] A method for comprehensive performance testing of automotive seats, comprising: The car seat to be tested is clamped and fixed, and the clamping status signal is acquired; Drive the car seat to perform an aging cycle action; During the execution of the aging cycle, the electrical performance parameters of the car seat are collected simultaneously.

[0016] The beneficial effects of this invention are as follows: This invention integrates a tooling module, an aging test module, and an electrical performance testing module, all under the unified control of a main control unit. The automotive seat under test only needs to be clamped and fixed once to simultaneously complete all aging durability and electrical performance tests, eliminating the need for multiple transfers and repeated tooling loading / unloading between multiple independent devices, thus improving production line efficiency. It also eliminates the risk of bumps and knocks caused by multiple transfers and repeated clamping of the seat, preventing secondary damage to the seat surface, slide rails, and wiring harness. The main control unit can centrally coordinate the collaborative operation of the tooling module, aging test module, and electrical performance testing module, issuing unified control commands. The operating rhythm of each module is centrally controlled by the main control unit, solving the problem of difficult coordination of the operating rhythms of multiple independent devices, thereby adapting to the continuous production process of automated mass production lines. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A framework diagram of a comprehensive performance testing platform for automotive seats; Figure 2 This is a framework diagram of the aging test module; Figure 3 A diagram showing the framework of the drive output unit; Figure 4 This is a block diagram of the load identification circuit. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Example 1 like Figure 1 As shown, a comprehensive performance testing platform for automotive seats includes: Main control unit; The tooling module clamps and fixes the car seat to be tested. The tooling module is connected to the main control unit, receives the clamping control commands issued by the main control unit, and sends back the clamping status signal of the car seat to the main control unit. The aging test module is connected to the main control unit and receives drive control commands from the main control unit to drive the car seat to perform aging cycle actions. The electrical performance testing module is connected to the main control unit, receives synchronous control commands from the main control unit, and synchronously collects the electrical performance parameters of the car seat during the execution of the aging cycle.

[0023] In this embodiment, the aging test performed is an existing test, including: Mechanical motion aging test: The seat adjustment motor is driven to perform cyclic actions such as back-and-forth sliding of the seat and adjustment of the backrest angle, simulating the long-term use conditions of the seat adjustment mechanism and completing the accelerated mechanical durability aging. The multifunctional electrical components are designed to withstand aging and drive the seat heating module, ventilation module, and massage mechanism to continuously start and stop in a cycle, simulating the long-term repetitive use conditions of heating, ventilation, and massage functions.

[0024] Corresponding to the above tooling modules and aging test content, in some embodiments of the present invention, electrical performance testing includes: After the tooling module completes the seat clamping, it collects relevant auxiliary electrical signals of the car seat clamping status; Adjust the motor's operating voltage, operating current, operating power, Hall position feedback signal, and motor load resistance; Heating module resistance, ventilation module operating power, massage mechanism load current, and start / stop status parameters of each function.

[0025] This invention integrates a tooling module, an aging test module, and an electrical performance testing module, all controlled by a unified main control unit. The car seat under test only needs to be clamped and fixed once to simultaneously complete all aspects of aging durability and electrical performance testing. This eliminates the need for multiple transfers and repeated tooling loading and unloading between multiple independent devices, thus improving production line efficiency. At the same time, it eliminates the risk of bumps and knocks caused by multiple transfers and repeated clamping of the seat, and avoids secondary damage to the seat surface, slide rails, and wiring harnesses.

[0026] During implementation, the main control unit can centrally coordinate the collaborative operation of the tooling module, aging test module, and electrical performance testing module, issuing unified control commands. The operating cycle of each module is centrally controlled by the main control unit, solving the problem of difficult coordination of the cycles of multiple independent devices, thus adapting to the continuous production process of automated mass production lines. For the electrical performance testing module, electrical performance parameters are collected synchronously during the aging cycle. Unlike the traditional segmented mode of aging first and then static testing, this allows for real-time capture of instantaneous parameter drift or intermittent latent electrical faults occurring under dynamic aging conditions.

[0027] As a preferred embodiment, the tooling module includes a universal base slide rail, a fixture assembly, and a sensing component; The universal base slide rail is fixedly installed on the test station. In some embodiments of the present invention, the universal base slide rail is configured as two parallel longitudinal main slide rails, with the left and right longitudinal main slide rails corresponding to the left and right mounting slide rails at the bottom of the car seat, respectively. Based on the above embodiments, as a preferred method for adjusting the lateral spacing between the two longitudinal main slide rails, at least two transverse T-slots can be opened at the test station, and the bottoms of the two longitudinal main slide rails are respectively embedded in the transverse T-slots by sliders; during the adjustment process, the entire longitudinal main slide rail moves left and right along the transverse T-slots, directly changing the left and right spacing between the two longitudinal main slide rails, thereby adapting to the slide rail width of different car seat models; as for the positioning after sliding into place, as a specific example, the longitudinal main slide rails can be quickly fixed by plug-in locking pins; Several clamping sets are provided and slidably mounted on a universal base slide rail. The installation position can be adjusted along the universal base slide rail to clamp and fix the bottom slide rail of the seat. Based on the above embodiments, at least two clamping sets are mounted on each longitudinal main slide rail to jointly complete the positioning and clamping of at least four points on the bottom of the car seat. By sliding the clamping sets on the longitudinal main slide rail, the longitudinal mounting hole spacing of the seat slide rail can be matched. A sensing component is disposed at the detection end of the universal base slide rail to identify the clamping status signal of the car seat. In some embodiments of the present invention, the clamping status signal includes: The seat placement signal can be output by a photoelectric sensor or proximity sensor arranged at the slide rail detection end, which is used to determine whether the car seat under test is placed in the set bearing area of ​​the tooling and whether it is positioned at the reference height. The seat reference alignment signal can be output by a contact sensor at the positioning reference of the universal base slide rail and the seat bottom mounting slide rail. It can detect whether the seat bottom mounting hole and the slide rail reference surface are completely matched with the tooling positioning reference, and determine whether the seat is tilted or misaligned. The clamping and locking signal of the fixture assembly is output by the limit switch or magnetic proximity sensor built into the fixture assembly, which provides feedback on whether the fixture has completed the clamping action.

[0028] In some embodiments of the present invention, the clamping assembly is an independent clamping unit slidably mounted on a universal base slide rail, consisting of a sliding base, clamping claws, and locking components. The sliding base can slide along the universal base slide rail to adjust the longitudinal installation position, adapting to the mounting hole spacing of seats in different vehicle models. After adjustment, it can be fixed by existing locking components. The clamping claws clamp the slide rail or mounting base at the bottom of the seat to achieve seat positioning and clamping. As a specific example, the clamping claws can adopt a pneumatic claw structure or a mechanical claw structure, both of which are within the protection scope of the present invention.

[0029] Example 2 The automotive seat comprehensive performance testing platform in this embodiment uses the same main control unit, tooling module, aging test module, and electrical performance testing module as in Embodiment 1. However, unlike Embodiment 1, this embodiment aims to provide an optimized form of the aging test module.

[0030] Specifically, such as Figure 2 As shown, the aging test module includes a drive output unit and a scheme management unit; The drive output unit is electrically connected to the adjustment motor, heating module, ventilation module and massage mechanism of the car seat, and outputs corresponding drive signals. Preferably, the drive output unit can be further extended to connect with other types of loads without affecting the implementation of this embodiment. Any extension of loads is also within the protection scope of this invention. The scheme management unit defines and stores several action schemes for adjusting the aging cycle of the motor, heating module, ventilation module, and massage mechanism; the drive signals are based on the action schemes.

[0031] In some embodiments of the present invention, the action scheme includes action sequence, number of cycles, interval duration and load parameters; during implementation, different action schemes can specifically simulate the durability operation state of a car seat under different actual use conditions.

[0032] In the above preferred solutions, the solution management unit can be set to match the differentiated testing standards of seats from different car manufacturers and models. Test condition switching can be completed without modifying the equipment hardware, which can improve the universal adaptability and replacement efficiency of the equipment.

[0033] As a preferred embodiment, such as Figure 3 As shown, the drive output unit includes a regulating motor drive channel, a heating module drive channel, and a ventilation and massage hybrid drive channel; Each drive channel is equipped with a load identification circuit to identify the load type and rated parameters of the corresponding component under test, and upload the rated parameters to the solution management unit. The components under test referred to here are the regulating motor, heating module, ventilation module and massage mechanism. When configuring the action plan, the scheme management unit sets staggered intervals for the start-up sequence of each drive channel according to the rated parameters, so that the current surge generated by the simultaneous start-up of multiple components under test is within the set range.

[0034] During implementation, the seat adjustment motor is an inductive load, which has the characteristics of high starting current ratio, need for forward and reverse control, and large fluctuations in operating status with load. In addition, it is easy to generate back electromotive force at the moment of start-stop, which can interfere with other sensitive components. Setting up an independent channel can configure inductive load drive protection and speed regulation logic separately, so as to avoid the impact of motor start-stop shock on the detection accuracy of heating, ventilation and other components.

[0035] Seat heating is a resistive load with high power and no starting shock. The driving method is mainly on / off or PWM power regulation. The load characteristics are completely different from those of motors. An independent channel can be configured with power control and over-temperature protection logic, while avoiding interference from the high current of the heating circuit to the sampling of low-power components.

[0036] Both the ventilation fan and the massage motor are low-power inductive loads with similar rated power, starting current ratio, and drive control methods. They are all DC on / off and speed control, and can be combined into a single channel for reusable drive and sampling circuits, thus simplifying the hardware architecture without affecting control accuracy.

[0037] In this preferred embodiment, each drive channel can automatically identify the load type and rated parameters of the corresponding component under test, and automatically adapt to the parameter differences of the adjustment motor, heating module, ventilation and massage mechanism of different car models' seats, so as to avoid drive failure or component damage caused by load mismatch.

[0038] The solution management unit dynamically configures the peak-shaving interval based on the actual identified rated parameters. It can match the interval duration to the startup characteristics of different components under test, thereby ensuring that the total current surge of multiple components under test starting at the same time is constrained within the set range, avoiding the peak current from exceeding the upper limit of the power supply circuit and damaging the components under test or the detection circuit. It also avoids slowing down the overall test cycle due to excessive delay margin.

[0039] As a preferred embodiment, the load identification circuit includes a current sampling resistor, a signal processing and amplification unit, an AD sampling chip, a constant voltage detection source, and a switching relay; The current sampling resistor is connected in series in the main power supply circuit of the drive channel, and a main circuit switch is set between it and the main drive power supply. The output of the current sampling resistor is connected to the AD sampling chip through a signal processing and amplification unit; for example... Figure 4 As shown, in this embodiment, the current sampling resistor Rs collects the circuit current, and the main circuit switch K1 is normally open; the two ends of the current sampling resistor Rs are differentially connected to the signal operation and amplification unit to perform proportional amplification and noise reduction processing on the weak sampled voltage signal. The output of the AD sampling chip is connected to the scheme management unit, and the sampled data after analog-to-digital conversion is uploaded to the scheme management unit. That is, the amplified analog signal is input to the AD sampling chip to be converted into a digital quantity, and finally uploaded to the scheme management unit for parameter calculation. The constant voltage detection source is connected in parallel to the output load terminal via a switch relay, that is, connected in parallel to the load interface downstream of the current sampling resistor. In some embodiments of the present invention, the constant voltage detection source is a low-voltage safe DC power supply, specifically within 5V, which is connected in parallel to the output load terminal via a switch relay K2.

[0040] As a further preferred embodiment, the load identification circuit sequentially passes through a static identification stage and a dynamic verification stage to complete the identification of the load type and rated parameters; During the static identification phase, switch relay K2 is closed, main circuit switch K1 is open, constant voltage detection source outputs low voltage detection voltage to the component under test, and the circuit current is collected through current sampling resistor Rs to calculate the static impedance of the component under test. The static impedance is used to distinguish between resistive loads and inductive loads. During the dynamic verification phase, switch relay K2 is opened, main circuit switch K1 is closed and rated voltage is applied, and the peak current and steady-state current value at the moment of startup are collected through current sampling resistor Rs, and the startup impact time is calculated.

[0041] During implementation, after obtaining the loop current, the following formula can be used to calculate the static impedance: ; in, V s This is the low-voltage detection voltage output by the constant-voltage detection source to the component under test; I 采 This refers to the real-time loop current collected. As described in the above embodiments, the seat heating is a resistive load. Under DC, the inductor is equivalent to a short circuit, and the component only exhibits resistive characteristics. The DC impedance is stable and constant, and the current will not change slowly over time. Therefore, the loop current collected by the AD sampling chip is constant, and the calculated static impedance value is fixed. The seat adjustment motor, ventilation fan, and massage motor are all inductive loads. There is coil inductance inside the motor. When DC power is applied, the inductance will generate a back electromotive force that opposes the change of current. The circuit current has a slow rise process. By collecting multiple sets of current data within a set time period, the calculated equivalent impedance will gradually decrease with the power-on time and eventually tend to stabilize. In summary, in some embodiments of the present invention, the scheme management unit continuously collects multiple sets of loop currents within 10-50ms to calculate multiple sets of static impedances; if the values ​​of multiple sets of static impedances fluctuate within a set range, it is determined to be a resistive load; if the impedance continues to decrease with the energizing time and the current slowly increases, it is determined to be an inductive load.

[0042] During operation, the AD sampling chip adopts a high-speed continuous sampling mode, and high-frequency sampling is started the moment the main circuit switch K1 is closed and powered on. In some embodiments of the present invention, a microsecond-level sampling interval is adopted. Specifically, the main circuit switch K1 continuously samples at high speed throughout the entire power-on process, stores all the sampled circuit current values, and takes the maximum current value within the sampling window, which is the current peak value in this embodiment; after the power-on impact ends, multiple sets of currents are continuously collected and averaged to obtain the corresponding steady-state current value.

[0043] After obtaining the above peak current and steady-state current values, in some embodiments of the present invention, the start-up impact duration is the total time from the power-on of the main power supply circuit to the time when the circuit current falls back to within ±5% of the steady-state current value, calculated as follows: The hardware timestamp corresponding to each set of sampled data is recorded synchronously by the AD sampling chip; the starting time timestamp is recorded with the turn-on time of the main circuit switch K1 as the starting point; the real-time sampled circuit current and steady-state current value are continuously compared; when the circuit current falls back to within ±5% error range of the steady-state current value, the current timestamp is read as the end timestamp; the start-up impact duration is obtained by subtracting the starting timestamp from the end timestamp.

[0044] Corresponding to the above embodiments, the rated parameters include peak current, steady-state current value, and start-up impact duration; as a preferred embodiment, the scheme management unit sets a staggered interval for the start-up sequence of each drive channel based on the rated parameters, including: The solution management unit extracts the peak current and start-up impact duration of the corresponding component under test at the moment of startup for each drive channel, and calculates the total peak current of all drive channels starting simultaneously. The solution management unit presets a total peak current threshold; When the total peak current exceeds the total peak current threshold, the scheme management unit sorts each drive channel in order of shortest to longest start-up impact duration to determine the start-up priority, and sets the start-up interval duration of adjacent drive channels to the start-up impact duration of the previous drive channel. Otherwise, all drive channels will start synchronously.

[0045] During implementation, each drive channel independently identifies the peak current of a single channel. Assuming that multiple channels are powered on synchronously, the total peak current can be calculated according to the extreme condition of completely synchronous superposition of the peak values ​​of each channel. In some embodiments of the present invention, the total peak current threshold is selected based on the following criteria: Rated peak output current of the power supply for the test station; Test the instantaneous withstand current limit of busbar cables, terminals, and fuses at the test station; Short-time overcurrent protection thresholds for internal busbars and power drive chips; The minimum value of the above three is taken as the total peak current threshold and stored in the scheme management unit, thereby preventing faults such as power current limiting, fuse blowing, driver chip overcurrent damage, and significant bus voltage drop when multiple components start up simultaneously.

[0046] In this preferred embodiment, when the total peak current exceeds the total peak current threshold, the components are started in ascending order of starting impact duration, with the interval equal to the starting impact duration of the previous stage. This ensures that the next component starts only after the current of the previous component has fully reached a steady state, preventing the superposition of multiple peak values ​​and avoiding problems such as low-voltage errors in the seat ECU and motor controller, and overcurrent burnout of the drive chip caused by a sudden large voltage drop on the bus. During implementation, by automatically obtaining the starting impact duration based on load identification, and automatically sorting and allocating intervals, the timing parameters can be adjusted without manual adjustment when changing vehicle models, improving the efficiency of model changeover.

[0047] Example 3 The automotive seat comprehensive performance testing platform in this embodiment uses the same main control unit, tooling module, aging test module, and electrical performance testing module as in Embodiment 1. However, unlike Embodiment 1, this embodiment aims to provide an optimized form of the electrical performance testing module.

[0048] Specifically, the electrical performance testing module includes several synchronous acquisition channels, each corresponding to an electrical performance parameter. The electrical performance parameters used in this embodiment are as described in Embodiment 1, and will not be repeated here. The main control unit outputs a unified trigger clock signal to control all synchronous acquisition channels to start sampling and transmit data synchronously, thereby avoiding the distortion of parameter correspondence caused by timing misalignment and accurately capturing hidden electrical anomalies during startup transients and action switching moments.

[0049] During implementation, when the seat experiences intermittent electrical faults, the synchronized multi-channel data can clearly present the sequence of abnormal parameters, accurately determine the causal relationship of the fault triggering, and the unified clock trigger eliminates the time deviation of each acquisition channel, avoiding misjudgment of performance parameters caused by sampling time differences, making the electrical performance test results during the aging process closer to the actual operating state of the component. In some embodiments of the present invention, the timing synchronization error of the transmission method of each synchronous acquisition channel is less than 1ms.

[0050] Example 4 A method for comprehensive performance testing of automotive seats, comprising: S1: Clamp and fix the car seat to be tested, and obtain the clamping status signal; S2: Drives the car seat to perform an aging cycle action; S3: During the execution of the aging cycle, the electrical performance parameters of the car seat are collected simultaneously.

[0051] The technical effects achieved in this embodiment are the same as those in Embodiment 1, and will not be repeated here. In the specific implementation process, the comprehensive performance testing platform for automobile seats described in Embodiment 1 can be used.

[0052] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive performance testing platform for automotive seats, characterized in that, include: Main control unit; The tooling module clamps and fixes the car seat to be tested. The tooling module is connected to the main control unit, receives clamping control commands issued by the main control unit, and sends back the clamping status signal of the car seat to the main control unit. An aging test module is connected to the main control unit and receives drive control commands from the main control unit to drive the car seat to perform aging cycle actions. An electrical performance testing module is connected to the main control unit, receives synchronous control commands from the main control unit, and synchronously collects the electrical performance parameters of the car seat during the execution of the aging cycle. The aging test module includes a drive output unit and a scheme management unit; The drive output unit is electrically connected to the component under test of the car seat. The component under test includes an adjustment motor, a heating module, a ventilation module, and a massage mechanism, and outputs corresponding drive signals. The scheme management unit defines and stores several action schemes, and the drive signal is based on the action scheme; The drive output unit includes a regulating motor drive channel, a heating module drive channel, and a ventilation and massage hybrid drive channel; each drive channel is equipped with a load identification circuit to identify the load type and rated parameters of the corresponding component under test, and upload the rated parameters to the scheme management unit; the rated parameters include peak current, steady-state current value, and start-up impact time; When configuring the action plan, the scheme management unit sets a staggered interval for the startup sequence of each drive channel based on the rated parameters, so that the current surge generated by the simultaneous startup of multiple components under test is within a set range, including: The scheme management unit extracts the peak current and start-up impact duration of the component under test corresponding to each drive channel at the moment of startup, and calculates the total peak current when all drive channels start simultaneously; the scheme management unit presets a total peak current threshold. When the total peak current exceeds the total peak current threshold, the scheme management unit sorts each drive channel in order of shortest to longest start-up impact duration to determine the start-up priority, and sets the start-up interval duration of adjacent drive channels to the start-up impact duration of the previous drive channel; otherwise, all drive channels start synchronously.

2. The automotive seat comprehensive performance testing platform according to claim 1, characterized in that, The tooling module includes a universal base slide rail, a fixture assembly, and a sensing component. The universal base slide rail is fixedly installed at the test station; The clamp assembly comprises several units, which are slidably mounted on the universal base slide rail for clamping and fixing the bottom slide rail of the car seat; The sensing component is located at the detection end of the universal base slide rail to identify the clamping status signal of the car seat.

3. The automotive seat comprehensive performance testing platform according to claim 1, characterized in that, The load identification circuit includes a current sampling resistor, a signal processing and amplification unit, an AD sampling chip, a constant voltage detection source, and a switching relay; The current sampling resistor is connected in series in the main power supply circuit of the drive channel, and a main circuit switch is set between it and the main drive power supply. The output terminal of the current sampling resistor is connected to the AD sampling chip through the signal operation and amplification unit. The output terminal of the AD sampling chip is connected to the scheme management unit, and the sampled data after analog-to-digital conversion is uploaded to the scheme management unit. The constant voltage detection source is connected in parallel to the output load terminal via the switch relay.

4. The automotive seat comprehensive performance testing platform according to claim 3, characterized in that, The load identification circuit sequentially completes the identification of the load type and rated parameters through a static identification stage and a dynamic verification stage, respectively.

5. The automotive seat comprehensive performance testing platform according to claim 1, characterized in that, The electrical performance testing module includes several synchronous acquisition channels, each corresponding to one of the electrical performance parameters; The main control unit outputs a unified trigger clock signal to control all synchronous acquisition channels to start sampling and transmit data synchronously.

6. The automotive seat comprehensive performance testing platform according to claim 5, characterized in that, The timing synchronization error of the transmission method of each of the aforementioned synchronous acquisition channels is less than 1ms.

7. A method for testing the comprehensive performance of an automotive seat, using the automotive seat comprehensive performance testing platform as described in claim 1, characterized in that, include: The car seat to be tested is clamped and fixed, and the clamping status signal is acquired; Drive the car seat to perform an aging cycle action; During the execution of the aging cycle, the electrical performance parameters of the car seat are collected simultaneously.

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