Rendering demonstration of TCRT5000 sensor module circuit_Basic hardware circuit diagram explanation

Circuit diagram:

Circuit function:

This example circuit is the TCRT5000 infrared photoelectric sensor application module circuit. It is an infrared emitting photoelectric switch. This module circuit can be used directly with other control circuits.

Circuit working process:

TCRT5000 is also an infrared emitting photoelectric sensor, which is composed of a high emitting power infrared photodiode and a high sensitivity phototransistor.

After the circuit is powered on, the infrared emitting diode of the sensor continuously emits infrared rays. When the emitted infrared rays are not reflected back or are reflected back but the intensity is not strong enough, the phototransistor is always off. At this time, the photoelectric sensor outputs a high level. After passing through the inverter, the module outputs low level.

When an object appears within the detection range of the sensor, the infrared ray is reflected back and the intensity is strong enough, the phototransistor is saturated and turned on, the photoelectric sensor outputs a low level, and after passing through the inverter, the module outputs a high level. At this time, if an indicator light is connected to the ground on the Signal network, the switch status of the module can be indicated.

This module uses the SN74AHCT1G14 inverter with Schmitt trigger, which can shape the module output waveform and is stable and reliable.

Notice:

The photoelectric sensor must be installed in a place where there is no direct exposure to strong light, because the infrared light in the strong light will affect the normal operation of the receiving tube.

-The Electronic Components Purchasing Network (www, oneyac, com) is a local component catalog distributor. It adopts the "small batch, spot, sample" sales model and is committed to meeting customers' procurement needs for multiple models, high quality, and fast delivery. Self-built and efficient intelligent warehousing, with over 50,000 self-operated inventories, provides one-stop genuine spot procurement, personalized solutions, option substitution and other diversified services. (This article is compiled from the Internet for the purpose of disseminating useful information and knowledge. If there is any infringement, please contact the administrator to delete it)

Circuit diagram:

Circuit diagram functions:

The circuit in this example is installed in a recorder, which can make the recorder automatically start recording when there is sound, and automatically stop after a delay time when there is no sound. You can also turn the switch to manual mode for manual recording.

Circuit diagram description:

In the circuit diagram, MK1 is the microphone, C1, D3, D5, and C4 are the rectifier and filter modules; the transistor Q2 is the trigger switch of the 555 oscillation circuit. Motor B1 is a recording motor, switch S1 is a voice control, and manual control switch.

Circuit diagram explanation:

1. When there is no sound.

When there is no sound, MK1 has no signal output, and transistor Q2 is cut off. Pins 6 and 2 of the 555 chip are both high level, so the 555 output is low level, transistor Q1 is cut off, and the recorder will not work.

2. When there is sound.

When there is sound, MK1 outputs an audio alternating voltage signal. After coupling by C1, it is rectified by D3 and D5, filtered by C4, and then output to the base of Q2, causing Q2 to saturate and conduct, pulling down pins 6 and 2 of the 555 chip. pin voltage, 555 outputs high level, Q1 is turned on, the recording motor works, and recording starts.

When there is an interruption in the external sound, Q2 is cut off, and the capacitor C2 starts to charge through the resistor R3. During this period of charging, the output of the 555 is still at a high level and is in a recording waiting state. When the charging voltage on capacitor C2 reaches above 2/3VCC, 555 outputs low level and the recording process automatically stops.

At this time, you can also manually control the continuation of the recording process.

-The Electronic Components Purchasing Network (www, oneyac, com) is a local component catalog distributor. It adopts the "small batch, spot, sample" sales model and is committed to meeting customers' procurement needs for multiple models, high quality, and fast delivery. Self-built and efficient intelligent warehousing, with over 50,000 self-operated inventories, provides one-stop genuine spot procurement, personalized solutions, option substitution and other diversified services. (This article is compiled from the Internet for the purpose of disseminating useful information and knowledge. If there is any infringement, please contact the administrator to delete it)