[New patent introduction] Wireless pressure transmitter capable of multi-channel switching transmission

Today, I will introduce a national invention authorized patent-a wireless pressure transmitter capable of multi-channel switching transmission. The patent was applied for by Nanjing Hangjia Electronic Technology Co., Ltd., and the authorization was announced on December 26, 2017.

Content description

The invention belongs to the technical field of pressure transmitters, and relates to a wireless pressure transmitter capable of switching multiple communication modes.

Background of the invention

Pressure transmitter is a common equipment in industrial control environment. The pressure transmitter is generally used to sense the fluid pressure in the process vessel and provide an electrical signal indicating the pressure to the control system. Pressure transmitters are suitable for use in oilfields, water conservancy, tap water and other industries, and are usually installed in industrial production and raw material collection sites. As the industrial industries in the city gradually move away from the periphery, these sites are also farther and farther away from the city center. The corresponding communication signal base stations are relatively sparse, and the signal network status is not as stable as in the city, which results in the transmitter signal acquisition and transmission. The instability of the system affects the normal collection of data.

Summary of the invention

In order to solve the above-mentioned problems, the present invention discloses a wireless pressure transmitter capable of multi-channel switching transmission. A variety of wireless transmission modules are arranged in the transmitter, and a controller is used to perform selective communication control on it.

In order to achieve the above objectives, the present invention provides the following technical solutions: a wireless pressure transmitter capable of multiple switching transmission, including a power supply circuit, a controller, a pressure sensor, an AD acquisition circuit, a temperature compensation circuit, a human-machine interface, a memory, and wireless Communication module, the pressure sensor is connected with the AD acquisition circuit, the controller is respectively connected with the AD acquisition circuit, temperature compensation circuit, man-machine interface, memory, and wireless communication module. The power supply circuit supplies power to the components in the transmitter, and the pressure sensor is used for acquisition. Pressure analog signal. The AD acquisition circuit is used to convert the analog signal collected by the pressure sensor into a digital signal and transmit it to the controller. The temperature compensation circuit performs temperature compensation on the digital signal output by the AD acquisition circuit. The man-machine interface is used for external people. Machine interaction equipment, the memory is used to store the data received and calculated by the controller, and the wireless communication module includes a short-distance wireless communication module and a long-distance communication module.

The short-range communication module includes at least two of the following modules: WIFI module, Bluetooth module, zigbee module, radio frequency module. The long-distance communication module includes at least two of the following modules: GSM/GPRS/CDMA module.

Compared with the prior art, the present invention has the following advantages and beneficial effects: it has both a short-distance wireless transmission module and a long-distance wireless transmission module, and each type of module has at least two types, and the processor can select according to priority The transmission module that can be connected performs data transmission, and can switch to other modules for transmission when the module cannot be connected, so as to ensure the stability of data transmission.

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