Data acquisition equipment and system

Abstract

The utility model relates to a data acquisition device and system, and the device comprises a device body; the multiple types of data acquisition interfaces are arranged on the equipment body, the multiple types of data acquisition interfaces are respectively used for accessing different types of sensors, and each type of data acquisition interface is used for acquiring at least one path of sensor signals of the accessed corresponding type of sensor. According to the data acquisition equipment and system, data acquisition of various types of sensors can be realized, and the acquisition efficiency and convenience of the sensor data are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of data acquisition, and in particular, to a data acquisition device and system. Background Art

[0002] With the rapid development of new energy vehicles, the driving of vehicles is becoming more and more intelligent, and the safety requirements of vehicles are constantly increasing. More and more sensors are used in new energy vehicles, and the demand for sensors is much higher than that of traditional vehicles. In order to ensure the safety and operation stability of the vehicle, it is necessary to collect data from these sensors and conduct various evaluations on the sensors based on the collected sensor data. Utility Model Content

[0003] The purpose of the present disclosure is to provide a data acquisition device and system, which can realize data acquisition of various types of sensors and improve the efficiency and convenience of sensor data acquisition.

[0004] In order to achieve the above-mentioned objectives, in a first aspect, the present disclosure provides a data acquisition device, comprising: a device body; and multiple types of data acquisition interfaces arranged on the device body, wherein the multiple types of data acquisition interfaces are respectively used to connect to different types of sensors, and each type of data acquisition interface is used to collect at least one sensor signal of the corresponding type of sensor connected.

[0005] Optionally, the data acquisition device also includes: multiple types of data acquisition circuits arranged in the device body, each type of data acquisition circuit corresponds to a type of data acquisition interface, and each type of data acquisition circuit is connected to its corresponding data acquisition interface for processing sensor signals collected by its corresponding data acquisition interface.

[0006] Optionally, the data acquisition device also includes: a data upload interface arranged on the device body, the data upload interface is respectively connected to the multiple types of data acquisition circuits, and is used to connect to a data analysis device and upload sensor signals processed by the multiple types of data acquisition circuits to the data analysis device.

[0007] Optionally, each type of data acquisition circuit also includes: a connection detection unit, which is used to detect whether a sensor is connected to the corresponding data acquisition interface; the data acquisition circuit is also used to process the sensor signal collected by the corresponding data acquisition interface according to the detection result of the connection detection unit.

[0008] Optionally, the connection detection unit includes: a first detection unit, and / or a second detection unit; the first detection unit determines whether a sensor is connected to the corresponding data acquisition interface by detecting a sensor reply command to a preset command of the broadcast; the second detection unit determines whether a sensor is connected to the corresponding data acquisition interface by detecting a loop current of the data acquisition circuit.

[0009] Optionally, the multiple types of data acquisition interfaces include: a peripheral sensor interface, used to access a sensor whose signal type is a peripheral sensor signal; a pulse width modulation interface, used to access a sensor whose signal type is a pulse width modulation signal; a single-sided half-byte transmission interface, used to access a sensor whose signal type is a single-sided half-byte transmission signal; and an analog voltage interface, used to access a sensor whose signal type is an analog signal.

[0010] Optionally, the pulse width modulation interface corresponds to a pulse width modulation signal acquisition circuit, which is connected to the pulse width modulation interface and is used to process the pulse width modulation signal collected by the pulse width modulation interface; the pulse width modulation signal acquisition circuit includes: a voltage conversion circuit, which is used to convert the voltage value of the pulse width modulation signal collected by the pulse width modulation interface into a power supply voltage value of the pulse width modulation signal acquisition circuit.

[0011] Optionally, the analog voltage interface includes a first analog voltage interface and a second analog voltage interface; the first analog voltage interface is used to connect to a sensor whose analog voltage value of an analog signal is within a first analog voltage value range; the second analog voltage interface is used to connect to a sensor whose analog voltage value of an analog signal is within a second analog voltage value range.

[0012] Optionally, the data acquisition device also includes: a power supply circuit arranged in the device body; a power supply interface arranged on the device body, the power supply interface is connected to the power supply circuit, the power supply interface is used to connect to a sensor, and the power supply circuit is used to power the sensor connected to the power supply interface.

[0013] Optionally, the power supply circuit includes: a power supply and a voltage conversion chip connected to the power supply; the voltage conversion chip is used to convert the voltage value of the power supply into a target voltage value, and the target voltage value is equal to a preset power supply voltage value of the sensor connected to the power supply interface.

[0014] In a second aspect, the present disclosure provides a data acquisition system, comprising: sensors of multiple types; and the data acquisition device as described in the first aspect, wherein the data acquisition device is used to acquire data from the sensors of multiple types.

[0015] Through the above technical solution, multiple types of data acquisition interfaces are set up, and these multiple types of data acquisition interfaces can be connected to different types of sensors respectively. When it is necessary to collect data from the corresponding type of sensor, the corresponding type of sensor can be connected to the corresponding type of data acquisition interface; thus, data collection of multiple types of sensors can be realized, and the convenience is also high; and each type of data acquisition interface can also be connected to at least one sensor signal; when it is necessary to collect multiple channels of data from a sensor, there is no need for repeated multiple collections, and multiple channels can be collected at one time; thus, convenient and efficient collection of multiple channels of data from a type of sensor can be realized. Therefore, this technical solution can realize data collection of multiple types of sensors and improve the efficiency and convenience of sensor data collection.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of a data acquisition device according to an exemplary embodiment.

[0019] Figure 2 It is a schematic diagram of the internal structure of a data acquisition device according to an exemplary embodiment.

[0020] Figure 3 It is a block diagram of a data acquisition device according to an exemplary embodiment.

[0021] Figure 4 It is a schematic diagram of a data link according to an exemplary embodiment.

[0022] Figure 5 is a schematic diagram of a data acquisition circuit according to an exemplary embodiment.

[0023] Figure 6A-6C is a schematic diagram of a PSI5 data acquisition circuit according to an exemplary embodiment.

[0024] Figure 7A-7D is a schematic diagram of a PWM data acquisition circuit according to an exemplary implementation.

[0025] Figure 8A-8D is a schematic diagram of a SENT data acquisition circuit according to an exemplary implementation.

[0026] Figure 9A-9Dis a schematic diagram of an analog voltage data acquisition circuit according to an exemplary implementation.

[0027] Figure 10A-10B is a schematic diagram of a power supply circuit according to an exemplary embodiment.

[0028] Fig.11 It is a structural block diagram of a data acquisition system according to an exemplary embodiment. DETAILED DESCRIPTION

[0029] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0030] In the present disclosure, unless otherwise specified, directional words such as "up, down, left, right, front, back", etc. are used only to facilitate the description of the present disclosure and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0031] As mentioned in the background technology, with the rapid development of new energy vehicles, the driving of vehicles is becoming more and more intelligent, and the requirements for vehicle safety performance are constantly increasing. There are more and more sensors used in new energy vehicles, and the demand for sensors is much higher than that of traditional vehicles. For example, body and environment perception sensors usually use hundreds of sensors in the whole vehicle.

[0032] Currently, the sensor signals include: PWM (Pulse Width Modulation), SENT (Single Edge Nibble Transmission), PSI5 (Peripheral Sensor Interface 5), and analog signals.

[0033] Before a sensor is used in a vehicle, or when a problem occurs with the sensor, the sensor needs to be tested, troubleshooted, verified, and analyzed to locate the problem or ensure the safety of the sensor.

[0034] In the related art, when performing sensor testing, troubleshooting, verification and analysis, it is necessary to first collect sensor signals through corresponding data acquisition equipment, and then perform corresponding processing based on the collected sensor signals.

[0035] Taking the sensor test as an example, the test is achieved through diagnostic instruments, high-precision multimeters, oscilloscopes, encoders, etc. For these test methods, only one sensor output signal can be tested at a time, which is less convenient. In addition, the data collection and data analysis efficiency of this test method are both low, which cannot meet the rapid development of automotive sensors.

[0036] Alternatively, for some data acquisition devices, even if they can collect one or two sensor signals, the sensor signals they can collect are still not comprehensive enough.

[0037] Based on this, the embodiment of the present disclosure provides a technical solution, which integrates data acquisition interfaces of various types of sensors on a data acquisition device. The data acquisition device can directly connect to the sensor for data acquisition and testing. There is no need to test the sensor through other test equipment. At the same time, the data acquisition device can meet the needs of various existing sensor signal acquisition, and there is no need to use one device to test one signal. The data acquisition device is convenient for R&D engineers to debug and test engineers to test, and is convenient for debugging and test verification of various sensors. At the same time, it meets the conditions for on-site analysis of sensors, is easy to carry, and is simple to operate. Engineers can intuitively view the collected data, check the message status, and can export historical data. On the economic level, it can also save the cost of purchasing test equipment and labor costs.

[0038] Figure 1 is a structural diagram of a data acquisition device 100 according to an exemplary embodiment. Figure 1 As shown, the data acquisition device 100 includes a device body 101 and multiple types of data acquisition interfaces 102 arranged on the device body 101; the multiple types of data acquisition interfaces 102 are respectively used to connect to different types of sensors, and each type of data acquisition interface 102 is used to collect at least one sensor signal of the corresponding type of sensor connected.

[0039] In some embodiments, the device body 101 can be implemented in different ways according to different application scenarios. For example, the shape of the device body 101 can be various implementable cubic device shapes; for another example, the size of the device body 101 can be configured according to the number of interfaces and the number of internal modules; for another example, the color and material of the device body 101 can be flexibly set. Therefore, in the embodiments of the present disclosure, the specific implementation of the device body 101 is not limited.

[0040] In some embodiments, multiple types of data acquisition interfaces 102 correspond to different types of sensors, respectively. When it is necessary to collect sensor data, the corresponding type of data acquisition interface 102 is accessed according to the type of sensor.

[0041] In some embodiments, each type of data acquisition interface 102 is used to collect at least one sensor signal of the connected corresponding type of sensor. It can be understood that each type of data acquisition interface 102 can be connected to multiple corresponding types of sensors at the same time, and sensor signals are collected for multiple corresponding types of sensors respectively. Alternatively, each type of data acquisition interface 102 can be connected to one corresponding type of sensor, but for this one sensor, multiple sensor signals can be collected simultaneously.

[0042] In some embodiments, corresponding holes or slots are provided on the device body 101 according to the shapes, sizes, etc. of various types of data acquisition interfaces 102. Thus, one end of the data acquisition interface 102 is placed outside the hole or slot to form an interface that can be connected to the outside; the other end can be connected to the corresponding internal components (such as circuits or chips, etc.). Alternatively, other implementation methods that can realize the interface are adopted, which are not limited here.

[0043] In some embodiments, the data acquisition interface 102 can be understood as a medium for connecting the sensor to the data acquisition device 100. A corresponding data acquisition circuit needs to be configured inside the data acquisition device 100 to realize the collection of sensor data.

[0044] therefore, Figure 2 is a schematic diagram of the internal structure of a data acquisition device 100 according to an exemplary embodiment. Figure 2 As shown, the data acquisition device 100 also includes various types of data acquisition circuits 103 arranged in the device body 101 .

[0045] Each type of data acquisition circuit 103 corresponds to one type of data acquisition interface 102 , and each type of data acquisition circuit 103 is connected to its corresponding data acquisition interface 102 to process the sensor signal collected by its corresponding data acquisition interface 102 .

[0046] For example, assuming that the data acquisition device 100 includes four data acquisition interfaces 102, the first data acquisition interface 102 is configured with a corresponding data acquisition circuit 103, the second data acquisition interface 102 is configured with a corresponding data acquisition circuit 103, the third data acquisition interface 102 is also configured with a corresponding data acquisition circuit 103, and the fourth data acquisition interface 102 is also configured with a corresponding data acquisition circuit 103.

[0047] Therefore, the sensor signals collected by each type of data collection will be transmitted to the data collection circuit 103 for corresponding data collection processing.

[0048] In some embodiments, the data collected by the data collection device 100 may be further analyzed, stored, etc.

[0049] therefore, Figure 3 It is a block diagram of a data acquisition device 100 according to an exemplary embodiment, and the data acquisition device 100 further includes: a data upload interface 104 provided on the device body 101. The data upload interface 104 is respectively connected to various types of data acquisition circuits 103, and is used to connect to a data analysis device, and upload sensor signals processed by various types of data acquisition circuits 103 to the data analysis device.

[0050] In some embodiments, the configuration of the data upload interface 104 may refer to the configuration of the data acquisition interface 102. Also, the data upload interface 104 may be in the form of a USB (Universal Serial Bus).

[0051] In some embodiments, the data analysis device may be a host computer, or other electronic device with data analysis and processing capabilities.

[0052] In some embodiments, the data acquisition device 100 may also include a communication module, which may be a wireless communication module, a mobile communication module, a Bluetooth communication module, etc. The communication module may be connected to the data acquisition circuit 103, and may establish a communication connection with the data analysis device through a corresponding communication method, thereby uploading the sensor data output by the data acquisition circuit 103 to the data analysis device.

[0053] In some embodiments, the data analysis device may also serve as a control device of the data acquisition device 100, and issue corresponding data acquisition instructions to the data acquisition device 100. That is, the data transmission between the data analysis device and the data acquisition device 100 may be bidirectional.

[0054] Through this implementation, not only can convenient and efficient collection of various types of sensor data be achieved, but the collected sensor data can also be uploaded to the corresponding device so that the corresponding device can perform visual display analysis and other processing, as well as store or record the corresponding sensor data.

[0055] Figure 4 is a schematic diagram of a data link according to an exemplary embodiment. Figure 4 As shown, the sensor signals include: three SENT signals, three PWM signals, three PSI5 signals, three 0-5V analog signals and three 0-12V analog signals. These multiple signals can be transmitted to the host computer software through one USB so that the host computer software can perform data analysis and processing.

[0056] In addition, the host computer can also send data to the data acquisition device 100, such as sending data acquisition instructions.

[0057] Figure 5 is a schematic diagram of a data acquisition circuit 103 according to an exemplary embodiment. Figure 5 As shown, the data acquisition circuit 103 includes: a connection detection unit 1030, which is used to detect whether a sensor is connected to the corresponding data acquisition interface 102; the data acquisition circuit 103 is also used to process the sensor signal collected by the corresponding data acquisition interface 102 according to the detection result of the connection detection unit 1030.

[0058] In some embodiments, one type of data acquisition circuit 103 corresponds to one connection detection unit 1030, and the connection detection units 1030 corresponding to different types of data acquisition circuits 103 may be the same or different depending on the actual situation. The same here may be that the detection method of the connection detection unit 1030 is the same, or the hardware / software form of the connection detection unit 1030 is the same, for example: the same type of connection detection unit 1030 is used and the same connection detection principle is used for detection. When the connection detection units 1030 are the same, different types of data acquisition circuits 103 may share one connection detection unit 1030.

[0059] In some embodiments, the connection detection unit 1030 includes: a first detection unit, and / or a second detection unit; the first detection unit determines whether a sensor is connected to the corresponding data acquisition interface 102 by detecting a sensor reply command to a preset command of the broadcast; the second detection unit determines whether a sensor is connected to the corresponding data acquisition interface 102 by detecting a loop current of the data acquisition circuit 103.

[0060] In some embodiments, the first detection unit may first broadcast a preset command, and then detect whether there is a sensor reply command to the preset command. If so, it is determined that the corresponding data acquisition interface 102 has a sensor connected; if not, the corresponding data acquisition interface 102 has no sensor connected.

[0061] In some embodiments, the second detection unit can detect the loop current of the data acquisition circuit 103 in real time or periodically. When the loop current is detected to be greater than a preset current, it is determined that the corresponding data acquisition interface 102 has a sensor connected; otherwise, it is determined that the corresponding data acquisition interface 102 has no sensor connected. The preset current can be preset according to different scenarios, for example, it can be 5mA.

[0062] In some embodiments, the on-detection unit 1030 in the data acquisition circuit 103 corresponding to the data acquisition interface 102 for collecting PSI5 signals may be a first detection unit; the on-detection voltage in the data acquisition circuit 103 corresponding to the data acquisition interface 102 for collecting SENT signals, PWM signals and analog signals may be a second detection unit.

[0063] In some embodiments, the first detection unit may be a processing unit that can broadcast commands and detect reply commands.

[0064] In some embodiments, the second detection unit may be a current detection circuit, or other current detection components, etc., and reference may be made to mature technologies in the art.

[0065] In the embodiments of the present disclosure, various types of data interfaces may include:

[0066] The peripheral sensor interface, namely the PSI5 interface, is used to access sensors whose signal type is a peripheral sensor signal.

[0067] The pulse width modulation interface, namely the PWM interface, is used to access sensors whose signal type is a pulse width modulation signal.

[0068] The single-edge nibble transmission interface, namely the SENT interface, is used to access sensors whose signal type is a single-edge nibble transmission signal.

[0069] The analog voltage interface, that is, the analog signal interface, is used to connect sensors whose signal type is analog signal.

[0070] For any of the above interfaces, three signals can be configured, that is, each interface can receive three sensor signals.

[0071] PSI5 is an open standard communication protocol. PSI5 is a two-wire signal, that is, one line for signal and one line for ground. It is more commonly used in automobiles. In the disclosed embodiment, the PSI5 interface can collect three PSI5 signals at the same time.

[0072] In some embodiments, the hardware form of the PSI5 interface may be DB9, which is a D-type data interface connector having 9 pins.

[0073] In an exemplary embodiment, the PSI5 interface may use only 6 pins of DB9, and among these 6 pins, two pins form a group. In a group of pins, one pin is connected to the sensor signal, and the other pin is grounded. For example, the correspondence between the pins and the signals may be shown in Table 1, in which PSI5_S1 corresponds to the first path, PSI5_S2 corresponds to the second path, and PSI5_S3 corresponds to the third path.

[0074]

[0075] Table 1

[0076] And, for the PSI5 interface, the corresponding connection detection unit 1030 will broadcast a command to determine whether there is a sensor connected. Whether the sensor is connected is determined by judging whether the sensor replies to the command. A reply indicates that it is connected, and no reply means that it is not connected. Then, the data acquisition circuit 103 corresponding to the PSI5 interface realizes data processing and can transmit the processed data to the host computer.

[0077] Figure 6A-6C is a schematic diagram of a PSI5 data acquisition circuit 103 according to an exemplary embodiment. Fig. 6A It is the main circuit part of the data acquisition circuit 103, which realizes corresponding data processing through the chip and some peripheral circuits; Figure 6B It is the peripheral circuit part of the data acquisition circuit 103, which mainly includes some resistors and capacitors and can have the function of protecting the circuit, etc.; Figure 6C For the part corresponding to the PSI5 interface, each pin is marked.

[0078] It can be understood that the relevant devices in this part of the circuit can be understood by referring to the mature technology in this field, for example: C represents capacitor, C106 represents capacitor labeled 106; R represents resistor, and the resistor label is the same; and the relevant pins of the chip, the relevant identification of the signal, etc. can also be understood by referring to the mature technology in this field; they will not be introduced in detail here.

[0079] It can be understood that for some specific implementation principles in this part of the circuit, reference can be made to mature technologies in the art and will not be described in detail here.

[0080] The PWM interface is used to collect PWM signals. In the embodiment of the present disclosure, the collection of three PWM signals can also be realized. The PWM technology can modulate the width of the pulse to obtain the required waveform equivalently. PWM is a three-wire signal and is more commonly used in automobiles.

[0081] For the PWM three-wire signal, one end can provide 5V power to the sensor, another end is grounded, and another end is connected to the sensor signal.

[0082] In some embodiments, the PWM hardware interface may also use DB9, which has 9 pins corresponding to three PWMs. For example, the relationship between the pins and the signals may be shown in Table 2, where PWM_S1 corresponds to the first channel, PWM_S2 corresponds to the second channel, and PWM_S3 corresponds to the third channel.

[0083]

[0084] Table 2

[0085] In some embodiments, the pulse width modulation interface corresponds to a pulse width modulation signal acquisition circuit, which is connected to the pulse width modulation interface and is used to process the pulse width modulation signal collected by the pulse width modulation interface; the pulse width modulation signal acquisition circuit includes: a voltage conversion circuit, which is used to convert the voltage value of the pulse width modulation signal collected by the pulse width modulation interface into a power supply voltage value of the pulse width modulation signal acquisition circuit.

[0086] In some embodiments, the level of the input PWM signal is between 1.4V and 12V, and the level of the output after passing through the level conversion circuit is the same as the supply voltage. For example, the supply voltage may be 3.3V.

[0087] Figure 7A-7D is a schematic diagram of a PWM data acquisition circuit 103 according to an exemplary implementation. Fig. 7A In the middle, it is the level conversion circuit part; in Figure 7B In, it is the interface circuit part; in Figure 7C In the middle, it is the part of the detection circuit that is turned on; in Fig.7D In the middle, it is the peripheral circuit part.

[0088] It can be understood that the relevant devices in this part of the circuit can be understood by referring to the mature technology in this field. For example, C represents a capacitor, and multiple capacitors are labeled with different numbers; R represents a resistor, and the resistors are labeled in the same way; and the relevant pins of the chip, the relevant identification of the signal, etc. can also be understood by referring to the mature technology in this field; they will not be introduced in detail here.

[0089] It can be understood that for some specific implementation principles in this part of the circuit, reference can be made to mature technologies in the art and will not be described in detail here.

[0090] SENT is an open communication protocol. In the disclosed embodiment, three-way SENT signal collection can be realized, and the power supply function for the sensor can be provided. SENT is a three-wire signal and is widely used in automobiles.

[0091] In some embodiments, the SENT interface may use a hardware interface DB9. For example, the correspondence between the pins of the SENT interface and the signals may be as shown in Table 3, where SENT_S1 corresponds to the first path, SENT_S2 corresponds to the second path, and SENT_S3 corresponds to the third path.

[0092]

[0093] Table 3

[0094] In some embodiments, the data acquisition circuit 103 of SENT first implements connection detection through a connection detection circuit, and then implements data processing through the corresponding data acquisition circuit 103 .

[0095] Figure 8A-8D is a schematic diagram of a SENT data acquisition circuit 103 according to an exemplary implementation. Fig. 8A In the part, it is the part that serves as the power supply; in Figure 8B In, it is the interface circuit part; in Figure 8C In the middle, it is the part of the detection circuit that is turned on; in Fig.8D In the middle, it is the peripheral circuit part.

[0096] It can be understood that the relevant devices in this part of the circuit can be understood by referring to the mature technology in this field, for example: C represents capacitance, and different capacitors have different labels; R represents resistance, and the labels of resistors are the same; and the relevant pins of the chip, the relevant identification of the signal, etc., can also be understood by referring to the mature technology in this field; they will not be introduced in detail here.

[0097] It can be understood that for some specific implementation principles in this part of the circuit, reference can be made to mature technologies in the art and will not be described in detail here.

[0098] In some embodiments, the analog voltage interface includes a first analog voltage interface and a second analog voltage interface; the first analog voltage interface is used to connect to a sensor whose analog voltage value of an analog signal is within a first analog voltage value range; the second analog voltage interface is used to connect to a sensor whose analog voltage value of an analog signal is within a second analog voltage value range.

[0099] In some embodiments, the first analog voltage interface corresponds to three analog voltage signals within a first analog voltage range, and the second analog voltage interface corresponds to three analog voltage signals within a second analog voltage range. The first analog voltage range may be 0-5V, and the second analog voltage range may be 0-12V.

[0100] Furthermore, the data acquisition circuit 103 of the analog voltage interface also has the function of providing the sensor with DC 5V and 12V power supply. Therefore, the analog voltage signal is a three-wire signal.

[0101] In some embodiments, two DB9s may be configured to serve as hardware interfaces of two analog voltage interfaces, respectively. The set spacing between the two DB9s may be a preset spacing.

[0102] For example, the correspondence between the pins and the signals may be as shown in Table 4, in which AI1-AI3 are three-way analog voltage signals of the first analog voltage interface, and AI4-AI6 are three-way analog voltage signals of the second analog voltage interface.

[0103]

[0104] Table 4

[0105] Figure 9A-9D is a schematic diagram of an analog voltage data acquisition circuit 103 according to an exemplary implementation. Fig. 9A In the middle, it is the step-down circuit part; in Fig. 9B In the middle, it is the analog chip circuit part; in Fig. 9C In the middle, it is the part of the detection circuit that is turned on; in Fig.9D In the figure, it is the interface circuit part. It can be understood that for the collection of analog voltage data, the voltage is first reduced by 3 times through the step-down circuit, and then the analog voltage is collected through the analog chip, and the data is uploaded to the host computer through the corresponding interface.

[0106] It can be understood that the relevant devices in this part of the circuit can be understood by referring to the mature technology in this field, for example: C represents capacitance, and different capacitors have different labels; R represents resistance, and the labels of resistors are the same; and the relevant pins of the chip, the relevant identification of the signal, etc., can also be understood by referring to the mature technology in this field; they will not be introduced in detail here.

[0107] It can be understood that for some specific implementation principles in this part of the circuit, reference can be made to mature technologies in the art and will not be described in detail here.

[0108] In some embodiments, the data acquisition device 100 also includes: a power supply circuit disposed within the device body 101; a power supply interface disposed on the device body 101, the power supply interface being connected to the power supply circuit, the power supply interface being used to access a sensor, and the power supply circuit being used to power the sensor connected to the power supply interface.

[0109] In some embodiments, the power supply circuit includes: a power supply and a voltage conversion chip connected to the power supply; the voltage conversion chip is used to convert the voltage value of the power supply into a target voltage value, and the target voltage value is equal to a preset power supply voltage value of the sensor connected to the power supply interface.

[0110] In some embodiments, the configuration of the power supply interface may refer to the configuration of various interfaces in the aforementioned embodiments.

[0111] In some embodiments, the voltage conversion chip may include a first voltage conversion chip for converting a voltage into a first voltage; and further includes a second voltage conversion chip for converting a voltage into a second voltage. The first voltage is, for example, 5V, and the second voltage is, for example, 12V. Thus, the data acquisition device 100 supports 5V and 12V power supply.

[0112] Figure 10A-10B is a schematic diagram of a power supply circuit according to an exemplary embodiment. Fig. 10A A power supply circuit that converts 24V voltage into 5V voltage for external power supply. Fig. 10B A power supply circuit that converts 24V voltage into 12V voltage for external power supply.

[0113] It can be understood that the relevant devices in this part of the circuit can be understood by referring to the mature technology in this field, for example: C represents capacitance, and different capacitors have different labels; R represents resistance, and the labels of resistors are the same; and the relevant pins of the chip, the relevant identification of the signal, etc., can also be understood by referring to the mature technology in this field; they will not be introduced in detail here.

[0114] It can be understood that for some specific implementation principles in this part of the circuit, reference can be made to mature technologies in the art and will not be described in detail here.

[0115] Through the power supply circuit, when performing fault analysis, maintenance and testing on the sensor on site, there is no need to provide an additional power module to power the sensor, and the sensor can be powered directly by the data acquisition device 100.

[0116] It can be seen from the introduction of the embodiments of the present disclosure that the data acquisition device 100 has the characteristics of small size, easy to carry, simple operation, convenient debugging by engineers, and can be used for debugging and testing verification of various sensors. It can be used for on-site data collection of sensors in various scenarios and analysis based on the data collection results.

[0117] It can be understood that, in addition to the components introduced in the embodiments of the present disclosure, the data acquisition device 100 may also include more basic components, circuits or various hardware.

[0118] Fig.11 is a structural block diagram of a data acquisition system 1100 according to an exemplary embodiment. Fig.11 As shown, the data acquisition system 1100 includes: multiple types of sensors 200 , and the data acquisition device 100 as introduced in the embodiment of the present disclosure, and the data acquisition device 100 is used to collect data from the multiple types of sensors 200 .

[0119] It can be understood that based on the data acquisition device, forming a data acquisition system with sensors can more conveniently realize data acquisition of multiple sensors and improve data acquisition efficiency.

[0120] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0121] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0122] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A data acquisition device, characterized in that: include: Equipment body; Multiple types of data acquisition interfaces are provided on the device body, the multiple types of data acquisition interfaces are respectively used to access different types of sensors, and each type of data acquisition interface is used to collect at least one sensor signal of the connected corresponding type of sensor; Multiple types of data acquisition circuits are arranged in the device body, each type of data acquisition circuit corresponds to a type of data acquisition interface, and each type of data acquisition circuit is connected to its corresponding data acquisition interface to process sensor signals collected by its corresponding data acquisition interface; Each type of data acquisition circuit also includes: A connection detection unit, the connection detection unit is used to detect whether a sensor is connected to the corresponding data acquisition interface; The data acquisition circuit is also used to process the sensor signal collected by the corresponding data acquisition interface according to the detection result of the connection detection unit.

2. The data acquisition device according to claim 1, characterized in that: The data acquisition device also includes: A data upload interface is arranged on the device body, and the data upload interface is respectively connected to the multiple types of data acquisition circuits, and is used to connect to a data analysis device and upload the sensor signals processed by the multiple types of data acquisition circuits to the data analysis device.

3. The data acquisition device according to claim 1, characterized in that: The connection detection unit comprises: a first detection unit, and / or a second detection unit; The first detection unit determines whether a sensor is connected to the corresponding data acquisition interface by detecting a sensor reply command to a preset command broadcast; The second detection unit determines whether a sensor is connected to the corresponding data acquisition interface by detecting the loop current of the data acquisition circuit.

4. The data acquisition device according to any one of claims 1 to 3, characterized in that: The multiple types of data acquisition interfaces include: A peripheral sensor interface, used to access a sensor whose signal type is a peripheral sensor signal; A pulse width modulation interface is used to access a sensor whose signal type is a pulse width modulation signal; A single-side nibble transmission interface is used to access a sensor whose signal type is a single-side nibble transmission signal; Analog voltage interface, used to connect sensors with analog signals.

5. The data acquisition device according to claim 4, characterized in that: The pulse width modulation interface corresponds to a pulse width modulation signal acquisition circuit, and the pulse width modulation signal acquisition circuit is connected to the pulse width modulation interface and is used to process the pulse width modulation signal acquired by the pulse width modulation interface; The pulse width modulation signal acquisition circuit comprises: a voltage conversion circuit, which is used to convert the voltage value of the pulse width modulation signal acquired by the pulse width modulation interface into a power supply voltage value of the pulse width modulation signal acquisition circuit.

6. The data acquisition device according to claim 4, characterized in that: The analog voltage interface includes a first analog voltage interface and a second analog voltage interface; The first analog voltage interface is used to connect to a sensor whose analog voltage value of an analog signal is within a first analog voltage value range; The second analog voltage interface is used to connect to a sensor whose analog voltage value of an analog signal is within a second analog voltage value range.

7. The data acquisition device according to claim 1, characterized in that: The data acquisition device also includes: A power supply circuit disposed in the device body; A power supply interface is provided on the device body, the power supply interface is connected to the power supply circuit, the power supply interface is used to access a sensor, and the power supply circuit is used to supply power to the sensor connected to the power supply interface.

8. The data acquisition device according to claim 7, characterized in that: The power supply circuit comprises: a power supply and a voltage conversion chip connected to the power supply; The voltage conversion chip is used to convert the voltage value of the power supply into a target voltage value, and the target voltage value is equal to a preset power supply voltage value of the sensor connected to the power supply interface.

9. A data acquisition system, characterized in that: include: Various types of sensors; The data acquisition device as described in any one of claims 1 to 8 is used to collect data from the multiple types of sensors.

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