CN201974269U - Pressure measuring and recording device - Google Patents

Abstract

The utility model provides a pressure measuring and recording device. The pressure measuring and recording device disclosed by the utility model comprises a pressure sensing module, a data conversion module and data processing equipment, wherein the data conversion module is electrically connected with the pressure sensing module, the data processing equipment is respectively and electrically connected with the pressure sensing module and the data conversion module, and electric power is supplied to the pressure sensing module and the data conversion module by the data processing equipment to further enhance the portability of the pressure measuring and recording device.

Description

Pressure measurement and recording device

technical field

The utility model relates to pressure measurement technology, in particular to a device for measuring and recording pressure.

Background technique

At present, during the vehicle test and engine diagnosis, the pressure measurement and recording of the engine's intake pressure and crankcase pressure generally use A/D data acquisition instruments, pressure sensors, power supplies, and data processing equipment. For example, a measuring device composed of a computer is carried out. The pressure sensor senses the pressure at the place to be measured and transmits the generated pressure data to the A/D data acquisition instrument; the A/D data acquisition instrument performs analog-to-digital conversion on the received pressure data, and then transmits the converted data to The data processing equipment is used to analyze and process the collected pressure data; the data collection instrument and the pressure sensor are powered by the power supply.

It can be seen from the above that the current pressure measurement and recording device requires a separate power supply to power the data acquisition instrument and the pressure sensor, thus limiting the portable application of the entire pressure measurement device.

Therefore, it is worth thinking about how to improve the portable performance of pressure sensor measurement and recording devices.

Utility model content

In view of this, the present application provides a portable pressure measurement and recording device, which includes a pressure sensing module, a data conversion module electrically connected to the pressure sensing module, and a pressure sensing module and the data conversion module A data processing device electrically connected respectively, wherein the data processing device supplies power to the pressure sensing module and the data conversion module.

Preferably, the data processing device is a portable computer with at least two USB data interfaces.

Preferably, the data processing device supplies power to the pressure sensing module through one of the USB data interfaces.

Preferably, the data processing device supplies power to the data conversion module through the other of the USB data interfaces.

Preferably, the data conversion module is a portable oscilloscope.

In the portable pressure measurement and recording device provided by the utility model, the data processing equipment directly supplies power to the pressure sensing module and the data conversion module without an independent power supply, thereby greatly improving the portability of the pressure measurement and recording device.

Description of drawings

Fig. 1 is a structural schematic diagram of the portable pressure measurement and recording device described in the utility model;

Fig. 2 is an example of the interface connected with the laptop on the pressure sensing module; and

Fig. 3 is an example of the interface connected with the laptop on the data conversion module.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a structural schematic diagram of the portable pressure measurement and recording device of the present invention. As shown in the figure, the portable pressure measurement and recording device of the present invention includes a pressure sensing module 10 . A data conversion module 14 electrically connected to the pressure sensing module, and a data processing device 12 electrically connected to the pressure sensing module 10 and the data conversion module 14 respectively, wherein the data processing device 12 provides The pressure sensing module 10 and the data conversion module 12 supply power.

In the vehicle pressure test, the sensing module 10 is used to measure the pressure to be tested, such as engine intake pressure, crankcase pressure, brake vacuum tube pressure and so on. The pressure measurement range of the sensing module 10 can be set according to actual needs. According to this embodiment, the sensing module 10 in the pressure measurement and recording device can be replaced, for example, a pressure sensing device with an appropriate range is selected according to the magnitude of the pressure to be measured. As an example, the pressure sensing module 10 in the present invention is a pressure sensor. The pressure measured by the sensing module 10 is transmitted to the data conversion module, and the data conversion module 14 converts the sensed pressure into a digital signal and monitors the detected pressure signal. In this embodiment, the data conversion module 14 is a portable oscilloscope (such as an oscilloscope modeled as PicoScope3323), and the portable oscilloscope has at least one interface that can be connected to the USB interface of the data processing device 12 . The data conversion module 14 sends the converted pressure signal to the data processing device for processing. In this embodiment, the data processing device 12 is a portable computer, which has at least two USB interfaces 121, 122, wherein the USB interface 121 is connected to the pressure sensing module 10 through a cable connection line 16, and the USB interface 122 is connected to Line 18 is connected to data conversion module 14 . In order to be better compatible with existing portable computers, the USB interfaces 121 and 122 on the data processing device 12 are standard USB interfaces. The interface connected with the cable connection line 16 on the pressure sensing module 10 can be a standard interface, also can be self-defined, and Fig. 2 has provided the example of a kind of self-defined interface, in Fig. The left-hand side is the interface of the data processing equipment, and the interface on the right-hand side of the reader is the interface of the pressure sensing module in Figure 2 when the reader is viewing this manual. Table 1 is an explanation for the user-defined interface in Figure 2 . The data processing device 12 , that is, the portable computer, supplies power to the pressure sensing module 10 through its USB port 121 via the cable connection 16 to ensure the normal operation of the sensing module 10 . Similarly, the interface connected with the cable connection line 18 on the data conversion module 14 can be a standard interface or a self-defining interface. Fig. 3 provides an example of a self-defining interface. The left-hand side is the interface of the data processing equipment, and in Figure 3, the interface on the right-hand side of the reader is the interface of the data conversion module when the reader reads this manual, and Table 2 is the description of each pin of the interface. The data processing device 12, that is, the portable computer, supplies power to the data conversion module 14 through its USB port 122 via the cable connection line 18 to ensure the normal operation of the data conversion module 14, and through the USB port 122 through the cable connection line 18 and The data conversion module 14 performs data communication; specifically, according to the definition in Table 2, the data conversion module 14 performs data communication with the data processing device 12 through the pins 2 and 3 of the custom interface, and receives the slave data processing device through the pin 1. Power delivered by device 12 .

Table 1

Pin Function Remark 1 VBUS Power +5V 2 null - 3 null - 4 GND ground

Table 2

Pin Function Remark 1 VBUS Power +5V

2 Data- data- 3 Data+ data+ 4 GND ground

In summary, using the pressure measurement and recording device described in the present invention, the data processing equipment can directly supply power to the pressure sensing module 10 and the data conversion module 14 through the USB interface, so that there is no need to provide additional power supply equipment. Moreover, in the case of using a portable computer and a portable oscilloscope, the portability of the pressure measurement and recording device described in the present utility model can be further enhanced.

Claims (5)

1. pressure survey pen recorder, it comprises pressure sensing module, the data conversion module that is electrically connected with described pressure sensing module and the data processing equipment that is electrically connected respectively with described pressure sensing module and described data conversion module, it is characterized in that described data processing equipment is to described pressure sensing module and described data conversion module supply electric power.

2. pressure survey pen recorder according to claim 1 is characterized in that, described data processing equipment is the portable computer with at least two usb data interfaces.

3. pressure survey pen recorder according to claim 2 is characterized in that, described data processing equipment is powered to described pressure sensing module by one in the described usb data interface.

4. according to claim 2 or 3 described pressure survey pen recorders, it is characterized in that described data processing equipment is powered to described data conversion module by in the described usb data interface another.

5. pressure survey pen recorder according to claim 4 is characterized in that, described data conversion module is a portable oscilloscope.

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