CN114265119A - Collision detection system and method - Google Patents
Collision detection system and method Download PDFInfo
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- CN114265119A CN114265119A CN202111582245.6A CN202111582245A CN114265119A CN 114265119 A CN114265119 A CN 114265119A CN 202111582245 A CN202111582245 A CN 202111582245A CN 114265119 A CN114265119 A CN 114265119A
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Abstract
The application relates to a collision detection system and method, wherein the system comprises a signal acquisition device and a power circuit; the power circuit is used for being connected with at least one of the first collision object and the second collision object, so that when the first collision object and the second collision object which are connected with the power circuit collide, the circuits of the first collision object and the second collision object are conducted; the signal acquisition device is electrically connected with the power circuit; the signal acquisition device is used for acquiring a voltage difference signal between a first collision object and a second collision object in a collision process, and generating a time-voltage curve according to the voltage difference signal so as to obtain collision time between the first collision object and the second collision object generated according to the time-voltage curve. Through the method and the device, the problems of high cost and low precision of collision detection are solved, and low-cost high-precision collision detection is realized.
Description
Technical Field
The present application relates to the field of collision detection technology, and more particularly, to a collision detection system and method.
Background
The collision time is an important parameter essential in the study of collision problems. In the related art, the acquisition of the collision time mainly depends on an optical detection method, for example, a collision process is shot by a high-speed camera, and then an image in the collision process is identified to obtain the collision time, however, the method is expensive in manufacturing cost, a common high-speed camera usually needs sixty-seven hundred thousand, and the operation flow is complex, on one hand, a shooting experiment platform is built, and on the other hand, the image is subjected to complex post-processing; meanwhile, since the collision time is extremely short, generally in the millisecond level, certain error exists in the accuracy of image recognition, and the accuracy of the collision time result obtained by the optical detection method is low.
At present, no effective solution is provided for the problems of high cost and low precision of collision detection in the related technology.
Disclosure of Invention
The embodiment of the application provides a collision detection system and a method, which at least solve the problems of high cost and low precision of collision detection in the related art.
In a first aspect, an embodiment of the present application provides a collision detection system, where the system includes a signal acquisition device and a power circuit; the power supply circuit is used for connecting at least one of a first collision object and a second collision object, so that when the first collision object collides with the second collision object, a circuit where the first collision object and the second collision object are located is conducted;
the signal acquisition device is electrically connected with the power circuit;
the signal acquisition device is used for acquiring a voltage difference signal between the first collision object and the second collision object in a collision process, and generating a time-voltage curve according to the voltage difference signal so as to obtain collision time between the first collision object and the second collision object generated according to the time-voltage curve.
In one embodiment, the power supply circuit includes a first output terminal and a second output terminal; under the condition that the first output end is connected with the first collision object and the second output end is connected with the second collision object, the input end of the signal acquisition device is respectively connected to the first collision object and the second collision object;
the signal acquisition device is further used for acquiring a first voltage signal of the first collision object and a second voltage signal of the second collision object in the collision process, and acquiring the voltage difference signal according to the first voltage signal and the second voltage signal.
In one embodiment, the power supply circuit includes a first output terminal; under the condition that the first output end is connected with the first collision object, the signal acquisition device is connected with the first collision object, and the second collision object is grounded;
the signal acquisition device is further used for acquiring a first voltage signal of the first collision object in the collision process and acquiring the voltage difference signal according to the first voltage signal.
In one embodiment, the power supply circuit includes a first output terminal; under the condition that the first output end is connected with the first collision object, the signal acquisition device is connected with the first collision object, and the second collision object is connected with a reference power supply device, wherein the reference voltage value of the reference power supply device is smaller than the output voltage value of the power supply circuit;
the signal acquisition device is further used for acquiring a first voltage signal of the first collision object in the collision process and acquiring the voltage difference signal according to the first voltage signal and the reference voltage value.
In one embodiment, the system further comprises a remote terminal, the signal acquisition device sends the time-voltage curve to the remote terminal, and the remote terminal generates the collision time between the first collision object and the second collision object according to the time-voltage curve.
In one embodiment, the signal acquisition device comprises a signal input unit, an analog-to-digital conversion module and a processor unit;
the signal input unit is used for receiving the voltage difference signal and sending the voltage difference signal to the analog-to-digital conversion module;
the analog-to-digital conversion module is used for performing analog-to-digital conversion processing on the voltage difference signal to generate a digital signal and sending the digital signal to the processor unit;
the processor unit is used for generating the time-voltage curve according to the digital signal and sending the time-voltage curve to the remote terminal.
In one embodiment, the signal acquisition device further comprises a wireless transmission module; the wireless transmission module is respectively connected with the processor unit and the remote terminal and is used for transmitting the time-voltage curve generated by the processor unit to the remote terminal; and/or the presence of a gas in the gas,
the signal acquisition device also comprises a data storage module; and the data storage module is connected with the processor unit and used for receiving and storing the time-voltage curve generated by the processor unit.
In one embodiment, in the case where the first impact body is a non-conductive body, the first impact body surface is covered with a first conductive film; and/or the presence of a gas in the gas,
in the case where the second impact body is the non-conductive body, the second impact body surface is covered with a second conductive film.
In one embodiment, the signal acquisition device is provided with a flexible circuit board.
In a second aspect, an embodiment of the present application provides a collision detection method, where the method includes:
a first collision object collides with a second collision object, and when the first collision object collides with the second collision object, a circuit where the first collision object and the second collision object are located is conducted;
acquiring a voltage difference signal between the first collision object and the second collision object in a collision process;
generating a time-voltage curve from the voltage difference signal to obtain a collision time between the first colliding object and the second colliding object generated from the time-voltage curve.
Compared with the related art, the collision detection system and the method provided by the embodiment of the application comprise a signal acquisition device and a power circuit; the power circuit is used for being connected with at least one of the first collision object and the second collision object, so that when the first collision object and the second collision object which are connected with the power circuit collide, the circuits of the first collision object and the second collision object are conducted; the signal acquisition device is electrically connected with the power circuit; the signal acquisition device is used for acquiring a voltage difference signal between a first collision object and a second collision object in a collision process, and generating a time-voltage curve according to the voltage difference signal so as to obtain collision time between the first collision object and the second collision object generated according to the time-voltage curve, so that the problems of high cost and low precision of collision detection are solved, and the low-cost and high-precision collision detection is realized.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a block diagram of a collision detection system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a time-voltage curve according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a time-to-collision detection according to the related art;
FIG. 4A is a schematic diagram of a collision detection system according to an embodiment of the present application;
FIG. 4B is a schematic diagram of another collision detection system according to an embodiment of the present application;
FIG. 4C is a schematic view of yet another collision detection system according to an embodiment of the present application;
FIG. 4D is a schematic diagram of yet another collision detection system according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a signal acquisition device according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a flexible circuit board according to an embodiment of the present application;
fig. 7A is a diagram illustrating a result of a time-to-collision detection according to the related art;
FIG. 7B is a diagram illustrating a result of a time-to-collision detection according to an embodiment of the present application;
FIG. 8 is a flow chart of a method of collision detection according to an embodiment of the present application;
fig. 9 is a block diagram of the inside of the computer apparatus according to the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Reference herein to "a plurality" means greater than or equal to two. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
The present embodiment provides a collision detection system, fig. 1 is a block diagram of a collision detection system according to an embodiment of the present application, and as shown in fig. 1, the system includes a signal acquisition device 12, a power circuit 14, and a remote terminal 16; the power circuit 14 is configured to be connected to at least one of the first collision object 141 and the second collision object 142, and when the first collision object 141 collides with the second collision object 142, a circuit in which the first collision object and the second collision object are located is turned on.
Specifically, the above power supply circuit 14 refers to a circuit including a power supply. The power circuit 14 may be a circuit independently connected to the signal acquisition device 12, or the power circuit 14 may also be installed inside the signal acquisition device 12, that is, a circuit is formed by a power supply in the signal acquisition device 12, and supplies power to the entire collision detection system. The above-mentioned first and second colliding objects 141 and 142 may be connected across the power supply circuit 14 such that the power supply circuit 14 is in an open state before the first and second colliding objects 141 and 142 collide, the power supply circuit 14 is closed due to the first and second colliding objects 141 and 142 coming into contact or collision during the collision, and the power supply circuit 14 is re-opened due to the two colliding objects separating after the collision, thereby achieving a voltage change across the first and second colliding objects 141 and 142, i.e., a sudden change in the voltage difference signal between the first and second colliding objects 101 and 142, caused by the circuit opening and closing during the collision of the colliding object. Alternatively, the power circuit 14 may be connected to only the first collision object 141 or the second collision object 142, as long as the first collision object 141 and the second collision object 142 generate a change of the voltage difference signal in the collision process, which is not described herein again.
The signal acquisition device 12 is electrically connected with the power circuit 14; wherein the signal acquisition device 12 is connected to the power supply circuit 14 so as to detect a voltage change across the first and second impact objects 141, 142 during an impact. It should be noted that the signal acquisition device 12 is a high-precision acquisition system, and can realize a sampling rate of 2G data points per second, so that the time precision can reach a nanosecond level.
The signal acquisition device 12 is configured to acquire a voltage difference signal between the first collision object 141 and the second collision object 142 during a collision; the signal acquisition device 12 is further configured to generate a time-voltage curve according to the voltage difference signal, so as to obtain a collision time between the first colliding object and the second colliding object generated according to the time-voltage curve. Specifically, after acquiring a series of voltage difference signals between the first collision object 141 and the second collision object 142 during the whole collision process, the signal acquisition device 12 may generate a collision time-voltage curve according to the time for acquiring the voltage difference signal each time and the corresponding voltage difference signal, and finally acquire the collision time of the collision process when the first collision object 141 and the second collision object 142 collide, which is calculated according to the time-voltage curve. The collision time can be directly generated by the signal acquisition device 12 according to the acquisition time point corresponding to the burst signal in the time-voltage curve; alternatively, the signal acquisition device 12 may send the time-voltage curve to a third-party external device such as a remote terminal or a server, and the user may directly read the time-voltage curve displayed on the external device that can be used for display, for example, the remote terminal, or the external device may further calculate and generate the collision time according to the received time-voltage curve.
Fig. 2 is a schematic diagram of a time-voltage curve according to an embodiment of the present application, as shown in fig. 2, in which the abscissa is used to represent the time to collision t in nanoseconds (ns) and the ordinate is used to represent the voltage in volts (V). That is, when the output voltage of the signal acquisition device 12 is at a low level before the first and second colliding objects 141 and 142 collide, this time corresponds to a time period from t0 to t1 in fig. 2; when the first and second colliding objects 141 and 142 collide, the output voltage of the signal collecting device 12 changes from the low level to the high level, which corresponds to a time period from t1 to t2 in fig. 2; when the collision of the first and second colliding objects 141, 142 ends, the output voltage of the signal pickup device 12 changes from the high level to the low level, which corresponds to the time period from t2 to t3 in fig. 2. Finally, the collision time of the time period from t1 to t2 can be calculated based on the time-voltage curve.
In the related art, the detection of the collision time is mostly performed by means of photometry. For example, fig. 3 is a schematic diagram of a collision time detection according to the related art, as shown in fig. 3, a collision test piece and a test piece to be collided, which are mounted on a guide rail, are respectively connected to two ends of a power supply through wires, and a light-emitting diode (LED) is connected in a circuit, the circuit is in an open state before collision, the LED lamp is turned off, and the circuit is closed due to contact between two objects during collision, and the LED lamp is turned on. And shooting the collision process through a high-speed camera, and reading the time of lightening the LED lamp to obtain the collision time. However, the optical measurement method is expensive and high in cost, and requires a large amount of supporting equipment and a complex operation flow. A high-speed camera must be equipped with strong light, equipment such as notebook computer, still need adjust light in the shooting process to compensate the shortcoming that the camera lens light ring is not enough and bring, still will carry out loaded down with trivial details aftertreatment to the photo of shooing after the shooting is accomplished, thereby obtain the collision time, lead to collision detection's with high costs and precision low.
Through the embodiment, the signal acquisition device 12, the first collision object 141 and the second collision object 142 form a loop, and the signal acquisition device 12 acquires a voltage difference signal between the first collision object 141 and the second collision object 142 in a collision process, so that a curve relation between collision time and voltage is generated based on the voltage difference signal, and finally the collision time generated according to a time-voltage curve is acquired.
In one embodiment, the power supply circuit includes a first output terminal and a second output terminal; in a case where the first output terminal is connected to the first colliding object and the second output terminal is connected to the second colliding object, the input terminals of the signal collecting device are connected to the first colliding object and the second colliding object, respectively. The signal acquisition device is also used for acquiring a first voltage signal of the first collision object and a second voltage signal of the second collision object in the collision process, and acquiring the voltage difference signal according to the first voltage signal and the second voltage signal.
Wherein the first collision object and the second collision object are both electric conductors. Before collision, an operator can connect the acquisition input end of the signal acquisition device to the first collision object and the second collision object respectively, so that the collision detection system for measuring the collision time at two sides is realized. In this connection manner, the signal acquisition device may acquire respective voltage signals of the first colliding object and the second colliding object in the collision process in real time, and acquire the voltage difference signal based on the respective voltage signals. Specifically, fig. 4A is a schematic diagram of a collision detection system according to an embodiment of the present application, and as shown in fig. 4A, the acquisition input terminals of the signal acquisition device are respectively connected to the first collision object and the second collision object through wires, and the lengths of the wires may be determined according to the distance between the two collision objects from the separation to the collision. The signal acquisition device acquires voltage signals corresponding to the two impacting objects, and a time-voltage curve is calculated and output according to the voltage signals.
Through the embodiment, the signal acquisition device is connected with the first collision object and the second collision object in a bilateral non-contact connection mode, so that a time-voltage curve is obtained through calculation of the signal acquisition device, the signal acquisition device is small in size and easy to install, the self collision characteristics of the detected collision objects cannot be influenced, and the collision detection cost is effectively reduced.
In one embodiment, the power circuit includes a first output terminal; under the condition that the first output end is connected with the first collision object, the signal acquisition device is connected with the first collision object, and the second collision object is connected with a reference power supply device, wherein the reference voltage value of the reference power supply device is smaller than the output voltage value of the power supply circuit; the signal acquisition device is also used for acquiring a first voltage signal of the first collision object in the collision process and acquiring the voltage difference signal according to the first voltage signal and the reference voltage value.
Specifically, in the above-mentioned single-side-connected collision detection system, the signal acquisition device may be connected to a first colliding object, a power supply circuit installed in the signal acquisition device supplies power to the first colliding object, and the second colliding object is connected to a reference power supply device having a voltage value smaller than an output voltage value of the power supply circuit, so that the first colliding object and the second colliding object can generate a voltage difference when colliding. In addition, the signal acquisition device can be connected with the first collision object by being attached to the first collision object at the moment, so that a single-side contact type collision detection system is realized, and the flexibility of collision detection is further improved. It is to be understood that the first collision object may be either a collided object or a collision object. The signal acquisition device can acquire the voltage difference signal based on the acquired first voltage signal and the reference voltage value because the reference voltage value of the reference power supply device is constant.
Through the embodiment, the connection of the collision detection systems is realized in a single-side connection mode, so that the signal acquisition device can be arranged on any collision object, and another collision object is connected to the reference power supply device with fixed output voltage, thereby realizing the connection mode and the connection of different collision detection systems on two sides, and expanding the application range.
In one embodiment, in a case where the first output terminal is connected to the first colliding object, the signal collecting device is connected to the first colliding object, and the second colliding object is grounded; the signal acquisition device is further used for acquiring a first voltage signal of the first collision object in the collision process and acquiring the voltage difference signal according to the first voltage signal. Fig. 4B is a schematic diagram of another collision detection system according to an embodiment of the present application, and as shown in fig. 4B, the signal acquisition device is attached to the surface of the first collision object through a flexible circuit, and the surface of the second collision object is directly connected to a power ground GND, so that the signal acquisition device acquires a first voltage signal corresponding to the connected first collision object, and since the voltage of the grounded second collision object is fixed to 0V, the acquired first voltage signal is a voltage difference signal to be detected, the collision time is calculated according to the voltage difference information, and the collision time is output to a remote terminal in a wireless transmission manner, so as to finally realize measurement of the single-side collision time.
Through the embodiment, the connection of the collision detection system is realized through the unilateral connection mode, so that the signal acquisition device can be arranged on any collision object and is grounded with another collision object, the signal source voltage of the signal acquisition device can be smaller, the situation that the circuit and the acquisition performance of the signal acquisition device are damaged by the larger power supply voltage of the signal acquisition device is not needed to be worried about, and the safety of the collision detection system is effectively improved.
In one embodiment, in the case where the first collision object is a non-conductive body, the surface of the first collision object is covered with a first conductive film; and/or, in the case where the second collision object is the non-conductive body, the surface of the second collision object is covered with a second conductive film. The first conductive film and/or the second conductive film may be an Indium Tin Oxide (ITO) film, a polyvinyl chloride (PVC) film, or the like; the first conductive film and the second conductive film may be the same conductive film or different conductive films. If at least one of the first collision object and the second collision object is a non-conductor and has a conductive characteristic, an operator can cover a layer of conductive film on the surface of the non-conductor in advance and then connect the signal acquisition device in an embedded wire mode, and the connection mode can be similar to the double-side connection mode or the single-side connection mode. Through the embodiment, the conductive film is covered on the surface of the non-conductor, so that the collision detection system can be applied to the collision object with the non-conductor conductive characteristic, the collision detection failure caused by the fact that the non-conductor is used as the collision object is avoided, the collision detection accuracy is improved, and the application range is further expanded.
Specifically, fig. 4C is a schematic diagram of another collision detection system according to an embodiment of the present application, as shown in fig. 4C, in a case where both the first collision object and the second collision object are non-conductive objects, a conductive film is covered on the collision surface of each collision object, and the collision surfaces covered with the conductive films are connected to the signal acquisition devices in the form of embedded wires, respectively, and the lengths of the wires may be determined according to the distance between the two collision objects from the separation to the collision. The signal acquisition device acquires voltage signals corresponding to the two impacting objects, and the collision time is calculated and output according to the voltage signals.
Fig. 4D is a schematic diagram of yet another collision detection system according to an embodiment of the present application, as shown in fig. 4D, respectively covering a layer of conductive film on the surface to be collided of each collision object to form a conductive contact surface under the condition that the first collision object and the second collision object are non-conductive objects, the signal acquisition device is attached to the surface of the first collision object through the flexible circuit, the surface to be collided of the second collision object is directly connected with a power ground GND, the signal acquisition device acquires a first voltage signal corresponding to the connected first impacting object, because the voltage of the grounded second collision object is fixed to 0V, the acquired first voltage signal is the voltage difference signal to be measured, and calculating collision time according to the voltage difference information, and outputting the collision time to a remote terminal in a wireless transmission mode to finally realize the measurement of the unilateral impact time.
It should be added that the collision acquisition systems of four different connection methods as shown in fig. 4A to 4D can be applied to different types of collision objects, so as to meet the detection requirements of various fields on collision time, and have a wide application range.
In one embodiment, the collision detection system further includes a remote terminal, the signal acquisition device transmits the time-voltage curve to the remote terminal, and the remote terminal generates the collision time between the first collision object and the second collision object according to the time-voltage curve. The remote terminal may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
In one embodiment, the signal acquisition device comprises a signal input unit, an analog-to-digital conversion module and a processor unit; the signal input unit is used for receiving the voltage difference signal and sending the voltage difference signal to the analog-to-digital conversion module; the analog-to-digital conversion module is used for performing analog-to-digital conversion processing on the voltage difference signal to generate a digital signal and sending the digital signal to the processor unit; the processor unit is used for generating the time-voltage curve according to the digital signal and sending the time-voltage curve to the remote terminal.
In one embodiment, the signal acquisition device further comprises a wireless transmission module; the wireless transmission module block is respectively connected with the processor unit and the remote terminal and is used for sending the time-voltage curve generated by the processor unit to the remote terminal; the wireless transmission module can be, but is not limited to, various communication devices such as WiFi or bluetooth.
In one embodiment, the signal acquisition device further comprises a data storage module; the data storage module is connected with the processor unit and used for receiving and storing the time-voltage curve generated by the processor unit.
Through the embodiment, the acquired voltage difference signals are processed through the signal acquisition device to generate the collision time detection result, the data processing is simple, the acquired voltage analog signals are processed through the signal acquisition device to be transmitted to the remote terminal in a WiFi wireless transmission mode, the data images of the collision time and the voltage are remotely displayed, the data storage is provided so that an operator can check, analyze and detect collision records, the collision detection system has the functions of storage, remote transmission and data display, and the use convenience of the collision detection system is effectively improved.
Specifically, fig. 5 is a schematic structural diagram of a signal acquisition apparatus according to an embodiment of the present disclosure, and as shown in fig. 5, the analog-to-digital conversion module adopts a high-speed analog-to-digital converter (ADC) module, and the processor unit includes a Field Programmable Gate Array (FPGA) and an ARM; the signal acquisition device comprises an input protection unit, an analog drive input unit, a high-speed ADC module, an FPGA, an ARM, a wireless transmission module, a data storage module, a clock input module, a phase-locked loop and a data display module. The analog signal input end of the signal acquisition device is a connecting wire in the collision detection system realized by the double-side connection or single-side connection mode. The input protection unit protects an input analog signal through a Transient Voltage Super (TVS). The analog driving input unit performs signal conditioning on the analog signal. The high-speed ADC module performs analog-to-digital conversion on the analog signal; because the ADC module is a high-speed ADC chip and the sampling rate is 2GSPS, namely 2G data points are sampled in each second, the detection precision of the collision time can reach nanosecond level. The processor unit comprises an FPGA and an ARM, namely, a digital signal obtained after analog-to-digital conversion is subjected to parallel operation processing in the FPGA, and finally data passes through a chip of an ARM framework and indicates a data display module to wirelessly transmit the digital signal to a remote terminal in a WiFi mode through a wireless transmission module, a collision time-voltage curve image shown in figure 2 is displayed on the remote terminal, and a collision time detection result generated by the remote terminal based on the collision time-voltage curve image is displayed. It should be noted that the data storage module has a function of a data storage module, so that data storage and analysis are facilitated. The clock input of the high-speed ADC module and the processor unit can be realized by 10MHz of the crystal oscillator, and the clock signal is subjected to frequency division and phase-locked loop processing, and the clock signals of 50MHz and 100MHz are respectively output to the high-speed ADC module and the processor unit. The input power supply of the signal acquisition device can be a 3.7V rechargeable lithium battery which is used for providing electric energy for each module.
In one embodiment, the signal acquisition device is provided with a flexible circuit board. Fig. 6 is a schematic diagram of a signal acquisition device according to an embodiment of the present application, as shown in fig. 6, the signal acquisition device includes a signal acquisition device hardware circuit and a flexible circuit board, and the signal acquisition device hardware circuit is attached to the flexible circuit board; the signal acquisition device is internally provided with a flexible antenna and a plurality of flexible interconnection lines, and the flexible interconnection lines are used as conducting wires with electrical properties; the flexible circuit board is wholly wrapped together through flexible silica gel in a closed mode, so that the flexible circuit board has a bendable function. The signal acquisition device can be attached to collision objects and collided objects with different structures through the flexible circuit board, and the signal acquisition device can be generally attached to the surfaces of the objects through double-sided adhesive tapes and the like. Through above-mentioned embodiment, through adopting the miniature flexible circuit board structure of light in signal acquisition device for signal acquisition device can the conformal paste in the measurement of colliding the object surface in order to carry out the time of collision, and can not cause the influence to the collision characteristic of object self, thereby is favorable to improving the precision that the collision detected.
It should be noted that the collision detection system can be applied to a collision detection method for a small-sized object such as nuclear graphite, and the collision time of nuclear graphite calculated by the collision detection system matches the collision time of the related art obtained by the photometric technique. Specifically, taking nuclear graphite collision detection as an example, fig. 7A is a schematic diagram of a collision time detection result according to the related art, as shown in fig. 7A, two time (ms) -speed (m/s) curves obtained by active photometry and passive photometry respectively are shown, and the collision time calculated according to the two curves is the time between two speed jumps, and the collision times in the two curves are the same. Fig. 7B is a schematic diagram of a result of detecting a collision time according to an embodiment of the present application, as shown in fig. 7B, which shows a collision time (ns) -voltage (V) curve, and a collision time calculated according to the curve is a time between two voltage jumps, and the collision time substantially coincides with the time obtained in fig. 7A. By comparing fig. 7A and 7B, it can be seen that the curve obtained by the photometric method has large fluctuation, the reading is inconvenient, and the collision time read by the present embodiment is clearer and more accurate.
The embodiment also provides a collision detection method which is applied to the signal acquisition device; the signal acquisition device is electrically connected with a power circuit, and the power circuit is used for being connected with at least one collision object in the first collision object and the second collision object. Fig. 8 is a flowchart of a collision detection method according to an embodiment of the present application, and as shown in fig. 8, the flowchart includes the following steps:
step S810, the first colliding object collides with the second colliding object, and when the collision occurs, the circuit in which the first colliding object and the second colliding object are located is turned on.
Step S820, acquiring a voltage difference signal between the first collision object and the second collision object during collision.
In step S830, a time-voltage curve is generated according to the voltage difference signal to obtain a collision time between the first colliding object and the second colliding object generated according to the time-voltage curve.
Through the steps S810 to S820, the signal acquisition device forms a loop with the first collision object and the second collision object, and the signal acquisition device acquires the voltage difference signal between the first collision object and the second collision object in the collision process, so that the curve relationship between the collision time and the voltage is generated based on the voltage difference signal, and the collision time generated according to the time-voltage curve is finally acquired.
In one embodiment, the step S810 further includes the following steps: the signal acquisition device acquires a first voltage signal of the first collision object and a second voltage signal of the second collision object in the collision process, and acquires the voltage difference signal according to the first voltage signal and the second voltage signal.
In one embodiment, the step S810 further includes the following steps: the signal acquisition device acquires a first voltage signal of the first collision object in the collision process, and acquires the voltage difference signal according to the first voltage signal.
In one embodiment, the step S810 further includes the following steps: the signal acquisition device acquires a first voltage signal of the first collision object in the collision process, and acquires the voltage difference signal according to the first voltage signal and the reference voltage value.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 9. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a collision detection method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 9 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
The present embodiment also provides an electronic device comprising a memory having a computer program stored therein and a processor configured to execute the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:
at S1, the first colliding object collides with the second colliding object, and the electric circuit in which the first colliding object and the second colliding object are located is turned on at the time of the collision.
S2, a voltage difference signal between the first colliding object and the second colliding object during the collision is acquired.
S3, generating a time-voltage curve from the voltage difference signal to obtain a collision time between the first colliding object and the second colliding object generated from the time-voltage curve.
It should be noted that, for specific examples in this embodiment, reference may be made to examples described in the foregoing embodiments and optional implementations, and details of this embodiment are not described herein again.
In addition, in combination with the collision detection method in the above embodiments, the embodiments of the present application may be implemented by providing a storage medium. The storage medium having stored thereon a computer program; the computer program, when executed by a processor, implements any of the collision detection methods in the above embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It should be understood by those skilled in the art that various features of the above-described embodiments can be combined in any combination, and for the sake of brevity, all possible combinations of features in the above-described embodiments are not described in detail, but rather, all combinations of features which are not inconsistent with each other should be construed as being within the scope of the present disclosure.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A collision detection system, characterized in that the system comprises a signal acquisition device and a power circuit; the power supply circuit is used for connecting at least one of a first collision object and a second collision object, so that when the first collision object collides with the second collision object, a circuit where the first collision object and the second collision object are located is conducted;
the signal acquisition device is electrically connected with the power circuit;
the signal acquisition device is used for acquiring a voltage difference signal between the first collision object and the second collision object in a collision process, and generating a time-voltage curve according to the voltage difference signal so as to obtain collision time between the first collision object and the second collision object generated according to the time-voltage curve.
2. The collision detection system according to claim 1, characterized in that the power supply circuit comprises a first output terminal and a second output terminal; under the condition that the first output end is connected with the first collision object and the second output end is connected with the second collision object, the input end of the signal acquisition device is respectively connected to the first collision object and the second collision object;
the signal acquisition device is further used for acquiring a first voltage signal of the first collision object and a second voltage signal of the second collision object in the collision process, and acquiring the voltage difference signal according to the first voltage signal and the second voltage signal.
3. The collision detection system according to claim 1, characterized in that the power supply circuit comprises a first output; under the condition that the first output end is connected with the first collision object, the signal acquisition device is connected with the first collision object, and the second collision object is grounded;
the signal acquisition device is further used for acquiring a first voltage signal of the first collision object in the collision process and acquiring the voltage difference signal according to the first voltage signal.
4. The collision detection system according to claim 1, characterized in that the power supply circuit comprises a first output; under the condition that the first output end is connected with the first collision object, the signal acquisition device is connected with the first collision object, and the second collision object is connected with a reference power supply device, wherein the reference voltage value of the reference power supply device is smaller than the output voltage value of the power supply circuit;
the signal acquisition device is further used for acquiring a first voltage signal of the first collision object in the collision process and acquiring the voltage difference signal according to the first voltage signal and the reference voltage value.
5. The collision detection system according to claim 1, characterized in that the system further comprises a remote terminal, the signal acquisition device sending the time-voltage curve to the remote terminal, the remote terminal generating the collision time between the first colliding object and the second colliding object from the time-voltage curve.
6. The collision detection system according to claim 5, wherein the signal acquisition device comprises a signal input unit, an analog-to-digital conversion module, and a processor unit;
the signal input unit is used for receiving the voltage difference signal and sending the voltage difference signal to the analog-to-digital conversion module;
the analog-to-digital conversion module is used for performing analog-to-digital conversion processing on the voltage difference signal to generate a digital signal and sending the digital signal to the processor unit;
the processor unit is used for generating the time-voltage curve according to the digital signal and sending the time-voltage curve to the remote terminal.
7. The collision detection system according to claim 6, wherein the signal acquisition device further comprises a wireless transmission module; the wireless transmission module is respectively connected with the processor unit and the remote terminal and is used for transmitting the time-voltage curve generated by the processor unit to the remote terminal; and/or the presence of a gas in the gas,
the signal acquisition device also comprises a data storage module; and the data storage module is connected with the processor unit and used for receiving and storing the time-voltage curve generated by the processor unit.
8. The collision detecting system according to claim 1, wherein in a case where the first collision object is a non-conductive body, the first collision object surface is covered with a first conductive film; and/or the presence of a gas in the gas,
in the case where the second impact body is the non-conductive body, the second impact body surface is covered with a second conductive film.
9. The collision detecting system according to any one of claims 1 to 8, characterized in that the signal acquisition device is provided with a flexible circuit board.
10. A collision detection method, characterized in that the method comprises:
a first collision object collides with a second collision object, and when the first collision object collides with the second collision object, a circuit where the first collision object and the second collision object are located is conducted;
acquiring a voltage difference signal between the first collision object and the second collision object in a collision process;
generating a time-voltage curve from the voltage difference signal to obtain a collision time between the first colliding object and the second colliding object generated from the time-voltage curve.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115096338A (en) * | 2022-06-29 | 2022-09-23 | 苏州浪潮智能科技有限公司 | Novel collision detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096338A (en) * | 2022-06-29 | 2022-09-23 | 苏州浪潮智能科技有限公司 | Novel collision detection device |
| CN115096338B (en) * | 2022-06-29 | 2024-01-19 | 苏州浪潮智能科技有限公司 | Novel collision detection device |
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