CSM electrical components Germany CSM model CSM price

CSM electrical components are a common type of low-current master control device. They utilize the collision of moving parts of production machinery to actuate their contacts, thereby connecting or disconnecting control circuits to achieve specific control objectives. Typically, such switches are used to limit the position or travel of mechanical motion, enabling the moving machinery to automatically stop, reverse, change speed, or perform automatic reciprocating motion at predetermined positions or travel limits. In electrical control systems, the role of position switches is to implement sequence control, positioning control, and detection of position status. They are used for travel control and limit protection of mechanical equipment. Construction: consists of an operating head, contact system, and housing. In actual production, limit switches are installed at pre-arranged positions. When a module mounted on the moving part of the production machinery strikes the limit switch, the contacts of the limit switch actuate, achieving circuit switching. Therefore, a limit switch is an electrical device that switches circuits based on the travel position of moving parts; its operating principle is similar to that of a pushbutton. Limit switches are widely used in various machine tools and lifting machinery to control their travel and provide terminal limit protection. In elevator control circuits, limit switches are also used to control the speed of opening and closing car doors, provide automatic door open/close limit protection, and provide upper and lower limit protection for the car.

CSM electrical components function

Modulated pulses generated by the oscillation circuit pass through the reflection circuit and are emitted as light pulses by the LED GL. When the measured object enters the effective range of the receiver, the reflected light pulses enter the phototransistor DU. In the receiving circuit, the light pulses are demodulated into electrical pulse signals, amplified, and synchronously gated and shaped. Interference is then eliminated using digital integration or RC integration methods. Finally, the signal triggers the driver output (with or without delay) to generate the photoelectric switch control signal. Photoelectric switches generally exhibit good hysteresis characteristics, so even if the detected object shakes within a small range, the driver's output state remains unaffected, keeping it in a stable operating zone. Meanwhile, the self-diagnostic system can display the light reception status and stable operating zone to monitor the photoelectric switch's operation at any time. Proximity switches are widely used in aviation, aerospace technology, and industrial production. In daily life, they are applied in automatic doors in hotels, restaurants, and garages, as well as in automatic hot air blowers. For security and anti-theft purposes, important locations such as archives, accounting departments, financial institutions, museums, and vaults are typically equipped with anti-theft devices composed of various proximity switches. In measurement technology, such as length and position measurement, and in control technology, such as displacement, speed, and acceleration measurement and control, large numbers of proximity switches are also used.

CSM electrical components features

Most microphones are electret condenser microphones (ECM), a technology with a history of several decades. The working principle of ECM utilizes a polymer diaphragm with permanently isolated charge. Compared to the polymer diaphragm of ECM, MEMS microphones exhibit stable performance across different temperatures and are not affected by temperature, vibration, humidity, or time. Due to their strong heat resistance, MEMS microphones can withstand high-temperature reflow soldering without any change in performance. Since the sensitivity change before and after assembly is minimal, this can even save on audio debugging costs during the manufacturing process. Currently, integrated circuit processes are increasingly being applied in the manufacture of sensors and sensor interface ICs. This microfabrication process offers advantages such as precision, design flexibility, miniaturization, integration with signal processing circuits, low cost, and mass production. A first-order resonant frequency in such a low frequency band would result in highly uneven frequency response within the audible frequency range, which is unacceptable for microphone applications. When tensile stress exists within the sensitive membrane, its resonant frequency increases, but at the cost of sensitivity. Of course, higher first-order resonant frequencies can be obtained by adjusting the dimensions of the sensitive membrane, but this will still reduce sensitivity. Thus, piezoresistive schemes are not suitable for the manufacture of micro-microphones. A feasible solution is to adopt capacitive schemes for manufacturing micro-microphones. The advantage of this method is that all materials used in integrated circuit manufacturing processes can be utilized for sensor manufacture. However, manufacturing micro-microphones using single-chip processes is quite difficult because the air medium between the two capacitor plates can only have a very small gap. Moreover, due to size limitations, bias voltage is difficult to satisfy in some application scenarios. Based on these issues, research on capacitive microphones has continued uninterrupted. Compared to traditional electret microphones, MEMS microphones offer advantages such as small size, good heat resistance, good consistency, good stability, high reliability, and resistance to RF interference. They can also output digital signals, facilitating intelligent development.

CSM electrical components characteristics

The static characteristics of a sensor refer to the relationship between the output and input quantities when the input signal is static. Since the input and output quantities are independent of time in this case, their relationship, i.e., the static characteristics of the sensor, can be described by an algebraic equation without time variables, or by a characteristic curve plotted with the input quantity as the abscissa and the corresponding output quantity as the ordinate. The main parameters characterizing the static characteristics of a sensor include: linearity, sensitivity, hysteresis, repeatability, drift, etc. (1) Linearity: Refers to the degree to which the actual relationship curve between the sensor's output and input deviates from the fitted straight line. It is defined as the ratio of the maximum deviation between the actual characteristic curve and the fitted straight line over the full scale range to the full-scale output value. (2) Sensitivity: Sensitivity is an important indicator of a sensor's static characteristics. It is defined as the ratio of the increment in output quantity to the corresponding increment in input quantity that causes it. S is used to denote sensitivity. (3) Hysteresis: Hysteresis is the phenomenon where the input-output characteristic curves do not coincide when the input quantity changes from small to large (forward stroke) and from large to small (reverse stroke). For the same magnitude of input signal, the output signals for the forward and reverse strokes are not equal; this difference is called the hysteresis error. (4) Repeatability: Repeatability refers to the degree of inconsistency in the characteristic curves obtained when the input quantity undergoes continuous multiple full-scale changes in the same direction. (5) Drift: Sensor drift refers to the phenomenon where the sensor's output changes over time while the input quantity remains constant. There are two causes of drift: one is the sensor's own structural parameters; the other is the surrounding environment (such as temperature, humidity, etc.). (6) Resolution: When the sensor's input slowly increases from a non-zero value, a observable change in output occurs after exceeding a certain increment; this input increment is called the sensor's resolution, i.e., the minimum input increment. (7) Threshold: When the sensor's input slowly increases from zero, an observable change in output occurs after reaching a certain value; this input value is called the sensor's threshold voltage.

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