What is the difference between sensor charge and electrical parameter?

The power sensor is a detection device, which can feel the information of the measured quantity, and can transform the detected and felt information into an electrical signal or other required form of information output according to a certain law, so as to meet the requirements of information transmission, processing, storage, display, recording and control. It is the first link to realize automatic detection and automatic control. It is also a type of electrical parameter to be measured (e.g. current, voltage, power, frequency, power factor.

and other signals) into DC current, DC voltage and isolate the output analog signal.

or digital signaling devices. The product conforms to the national standard GB T13850-1998. Note: True RMS voltage and current transducers are used to measure voltage or current signals with serious waveform distortion in the power grid, and can also measure square waves.

Non-sinusoidal waveforms such as triangular waves.

Electric power isolation sensors are divided into the following six categories according to the different signals and functions of the detected power quantity:

current sensors;

voltage sensors;

frequency sensors;

power sensors;

Temperature sensor.

Cross-line alarm sensor.

It usually consists of a sensitive element and a conversion element.

1) The sensitive element is the part of the sensor that can be measured directly (or in response).

2) The conversion element refers to the part of the sensor that can feel (or respond) to the more sensitive element that is measured and converted into the electrical signal that is transmitted and/or measured.

3) When the output is a specified standard signal, it is called a transmitter.

The difference between a fuel gauge and a non-power sensor is that a fuel gauge focuses on electrical signal processing and is typically used for energy metering and management in power systems, power battery vehicles, and household appliances. Non-electric sensors are used to obtain non-electrical quantities such as environmental parameters, physical parameters, and chemical Keizao parameters. Here's the specific difference between a fuel gauge and a non-fuel sensor:

1.Applications: Fuel sensors are mainly used in electrical signal processing, such as power measurement, control, maintenance and management; Non-electric sensors are used to obtain environmental parameters such as temperature, pressure, flow, humidity, velocity, etc.

2.Signal type: The signal type of the fuel gauge is usually the power signal; The signal type of a non-gaug-gauge sensor can be either an electrical signal or a different type of signal.

3.Sensor principle: The principle of a fuel sensor is usually based on electromagnetic induction and electronic measurements; Non-electric sensors have different principles such as optics, acoustics, and chemistry depending on the object they measure.

4.Sensor accuracy: Fuel sensors often require high-precision parameter measurements that reflect the accuracy of the electrical system, while the accuracy of non-fuel sensors can be selected according to different application requirements.

In short, the application fields and principles of fuel sensors and non-power sensors are different, and they need to be selected and used according to specific needs.

Linearity, sensitivity, hysteresis, repeatability, drift, etc.

1. Linearity: refers to the degree to which the actual relationship curve between the output and the input of the sensor deviates from the fitting straight line. Defined as the ratio of the maximum deviation between the actual characteristic curve and the fitted line over the full scale range to the full-scale output.

2. Sensitivity: Sensitivity is an important indicator of the static characteristics of the sensor. It is defined as the ratio of the increment of the output to the corresponding increment of the input that caused the increment. S is used to indicate sensitivity.

3. Hysteresis: The phenomenon that the input and output characteristic curves of the sensor do not coincide during the change of the input amount from small to large (positive stroke) and input quantity from large to small (reverse stroke) becomes hysteresis. For the input signal of the same size, the positive and negative 4 of the sensor and the stroke output signal are not equal, and this difference is called the hysteresis difference.

5. Repeatability: Repeatability refers to the degree of inconsistency of the characteristic curve obtained when the input quantity of the sensor changes continuously in the full scale in the same direction.

6. Drift: The drift of the sensor refers to the change of the output of the sensor with time under the condition that the input amount remains unchanged, which is called drift. There are two reasons for drift: one is the structural parameters of the sensor itself; The second is the surrounding environment (such as temperature, humidity, etc.).

1. The sensor is static

The static characteristics of a sensor refer to the correlation between the output and input of the sensor for the static input signal. The main parameters that characterize the static characteristics of the sensor are: linearity, sensitivity, hysteresis, repeatability, drift, etc.

2. Sensor dynamics

The so-called dynamic characteristics refer to the characteristics of the output of the sensor when the input changes. In practice, the dynamic characteristics of a sensor are often expressed in terms of its response to some standard input signal. The most commonly used standard input signals are step signal and sinusoidal signal, so the dynamic characteristics of the sensor are also expressed in step response and frequency response.

3. Linearity

Typically, the actual static characteristic output of the sensor is a curve rather than a straight line. In practice, in order to make the meter have a uniform scale reading, a fitting line is often used to approximate the actual characteristic curve, and linearity is a performance index of this approximation.

4. Sensitivity is raised

Sensitivity refers to the steady-state operation of the sensor. If there is a linear relationship between the output and input of the sensor, then the sensitivity s is a constant. Otherwise, it will vary with the amount of input.

When the output and input dimensions of the sensor are the same, the sensitivity can be understood as the magnification.

The increased sensitivity results in high measurement accuracy. However, the higher the sensitivity, the narrower the measurement range and the less stable it tends to be.

5. Resolution

Resolution refers to the ability of a sensor to perceive the smallest change being measured.

Generally, the resolution of the sensor is not the same at each point in the full-scale range, so the maximum change in the input quantity that can cause the output to change in step in the full-scale range is often used as a measure of resolution. These metrics are referred to as resolutions as a percentage of full scale. Resolution is negatively correlated with the stability of the sensor.

Do voltage and current sensors function the same as power supply monitoring sensors?

Kiss! Hello to you, I am happy to answer your <>

Pro, the functions of voltage and current sensors and power supply monitoring sensors are not the same. The voltage sensor generally inputs a current signal and outputs a voltage signal, while the current sensor inputs a voltage signal and outputs a current signal. Voltage sensors require a large input resistance, whereas current sensors require a small input resistance.

The difference between a voltage sensor and a current sensor: Compared with a voltage sensor, the current sensor has better anti-interference ability and a longer propagation distance. The common electric field-coupled interference signal is very similar to a signal source connected with a capacitor in series, and this capacitance is the parasitic capacitance of spatial distribution, and the capacity is very small, so the current of the electrical interference signal is also very small.

However, if our receiver circuit is not receiving a current signal, but a voltage signal, the input impedance is often very large. (Note: The reason why the input impedance of the receiving voltage signal is large is to reduce the influence of resistance on the transmission line) so that the interference signal is connected in series with the distributed capacitor and added to the blind input terminal, and the voltage division is not small.

Therefore, the transmission circuit of the voltage type signal is not as good as the current type when it comes to resisting this kind of interference. Hope mine can help you <>

If you have any other questions, you can ask me again<>

Do voltage and current sensors function the same as power supply monitoring sensors?

Pro, it's not the same, the voltage and current sensor and the power monitoring sensor have some of the same functions, but guess they also have some different functions. The main function of a voltage and current sensor is to detect and measure potential voltage and current problems (such as overloads or short circuits) and thus ensure the safe operation of the system. The main function of the power monitoring sensor is to monitor and record the power usage of the system to achieve energy saving and prolong the life of the power supply.

1. Center frequency (general: 25kHz).

2. Whether it is waterproof (open or closed), and some are still acid and alkali resistant.

3. Diameter and power (generally the larger the diameter, the greater the power).

4. Blind area (for the probe, it is the aftershock, the shorter the aftershock, the better, usually the aftershock of the < 40kHz probe is less than 2ms is very good, and 2ms corresponds to the blind area of the meter. The high-frequency probe aftershock is shorter, but the detection distance is also shorter).

5. Angle, the angle is actually not very important, because the ultrasonic directionality is very strong, no matter the size of the angle, it is basically vertical at a long distance.

6. Impedance, this is related to your circuit design.

7. Working temperature, this parameter can be seen, not that it is not important, but you have no way to change it, when designing the circuit, you should leave enough margin, because in some extreme temperatures, the center frequency of the ultrasonic probe will drift, resulting in low signal transmission and reception efficiency, and sufficient surplus can reduce the impact of the limit environment on the equipment.

Is it a load cell? If yes, that.

1. Maximum weight.

2. Resolution.

3. Repeatability error.

4. Hysteresis error.

5. Nonlinear error.

6. Creep error.

7. Zero point output.

8. Working temperature.

9. Storage temperature.

10. Excitation voltage.

11. Safety overload.

12. Limit overload.

13. Protection level.

14. Material.

15. Insulation resistance.

That's pretty much it.

The first type: sensing element, which measures the two parts of the conversion circuit.

The second type: the sensitive element, the sensing element, and the measurement conversion circuit are three parts.