1, the design controller uses 51 MCU AT89S52, AT89S52 single-chip microcomputer in industrial control, measurement, instrumentation is still more widely used.
2, it is recommended that you use STC12, STC15, STC8 three series of microcontroller, because of the internal A/D conversion circuit, you can directly put the sensor output analog voltage connected to A pin of P1 port, the internal A/D converter is 10 bits, for general applications, this accuracy is sufficient.
3, this you can connect a 1k pull-up resistor at the output end to the 5V power supply, so that the MCU can sense a high level when there is no outputOutput is low. The recognition of high and low level is based on 6V. Higher than 6 indicates a high level. A level below 6 is low. Give it a try.
4. The system is composed of microcomputer to control the weighing and comparison of the weighing sensor, and output the control signal, perform the fixed value weighing, control the operation of the external feeding system, and implement the task of automatic weighing and fast packing.
1, [TaipingThe role of the atmospheric pressure sensor is to detect the change of atmospheric pressure around the car, and convert the changed pressure into an electrical signal to be transmitted to the ECU, and the ECU corrects the injection amount and ignition time according to this signal, so that the injection time and ignition time can adapt to the change of atmospheric pressure.
2, the role of the atmospheric pressure sensor (sometimes called high altitude compensator, HAC) is to transmit the atmospheric pressure to the electronic control module in the form of an electrical signal. Atmospheric pressure varies with weather and altitude. The less pressure, the thinner the air.
3, the air pressure is madeThe atmospheric pressure applied per unit area is equal to the weight of the vertical column of air extending upward to the upper boundary of the atmosphere. The scale of all meteorological barometers should be divided in hPa. Under standard conditions, 760mmHg is equal to 10325hPa.
4, the atmospheric pressure sensor is packaged with imported chips, and has the characteristics of high precision and high sensitivity through precise temperature compensation. Can be applied to air pressure, altitude measurement is a supporting product of automatic weather station.
5, the basic function of the intake pressure sensor: its main role is to detect
1, iPadPro and iPadAir are ±0hPa, iPadmini is ±5hPa. ipad is divided into iPadPro, iPadAir and iPad Mini, iPadPro and iPad air pressure sensor accuracy is ±0hPa, iPad Mini pressure sensor accuracy is ±5hPa.
2, the specific pressure value may be different because of the design and manufacturing technologyIn general, the air pressure of the Apple 14 Pro should be close to atmospheric pressure, that is, about 103 kpa (kilopascals). This air-tight design is mainly achieved through precise packaging processes and material selection.
3, the iphone13 does not have a barometer, the iPhone 13 Pro and iPhone 13 Pro Max have a barometer. The iPhone13 series has been on the market for six months, so let's introduce some parameters of the 13 series. First, the screen. The iPhone13 mini has a bigger screen than the othersBoth models are small. Four inches and one inch.
4. You can download Barometer for iPhone 6/6 Plus from App Store. Barometer for iPhone 6/6 Plus helps users check the local air pressure, and is the most common way to measure air pressure on the iPhone 13.
5, This sensor is equipped with software to correct the inherent zero and full scale temperature drift coefficient of the silicon chip. A user enquiry form can be provided upon request. Use such a copyThe data sheet can be improved with an alternative technical solution at a very favorable price.
6, iphone 6 plus pressure sensor can not be used alone, can only be used as App data entry. There is a height measurement software that uses a pressure sensor, first placed on the ground and then placed on the head, you can calculate the height by altitude interpolation, only a few centimeters of error.