Science and Technology Development In order to solve the problem of urinating in summer swimming pools, graduate students of the University of Texas invented a detector that will emit light. The magnetic anomaly detection network can help early detection of tsunami and prepare for prevention. In life, various kinds of detection equipments play their role and have solved many problems in life.
Pool probes make bad habits
When the summer arrives, it's nice to have a swim in the pool, but there are also many people who worry about the quality of the water in the swimming pool. Apart from some hair swarf and human sweat that affect the quality of the pool, what people hate most is those who urinate in the pool. It's right. If there is a thing that will allow this type of abuse to appear immediately, everyone will feel more at ease. Recently, researchers at a University in Texas invented such a device.
Pool detection device
Researchers developed the detection device, once the pool appears urine, the device will automatically send a green light to inform other swimmers flash fast, free from pollution! Researchers at Texas A&M University collected pool water through a cylindrical device and added zinc ions to make it chemically active to detect a chemical called urobilin, which urinates with urine and releases zinc. When combined with ions, they emit green light under ultraviolet light. No matter whether they are humans or livestock, they will have nothing to hide.
In addition to detecting urine, this probe can also be suspicious of liquids and gases.
Magnetic anomaly detection network forecast tsunami
This small detector can solve a major concern for everyone. Summer swimming can be assured! The means of this detection is to use the principles of biological electronics. In addition to this, there are many other means of detection using various principles that can give us solutions to life's problems. The tsunami is a terrible natural disaster that sounds like it. We cannot compete with the power of nature, but if we can predict the tsunami in advance, we can reduce the harm of the tsunami.
According to foreign media reports, scientists have discovered that magnetic anomalies can be used to warn of the occurrence of tsunami. Chinese engineers created a model to simulate the relationship between the Earth’s magnetic field and huge waves. The research team said that the study is helpful for construction. An early tsunami warning system, we can detect the magnetic anomaly caused by tsunami through the satellites deployed on the track, and then make a tsunami warning report. Tsunami's huge waves are often related to earthquakes. They can be tens of meters above sea level. If they occur in the coastal waters, tens of meters of waves can destroy everything on the land, with devastating effects. When the tsunami occurs in the ocean (offshore), its height is not large, and it may be difficult to find under the interference of waves on the ocean background.
Although the tsunami has a certain degree of concealment, it moves very fast and involves a lot of rapid changes in the seawater. Because the seawater has a certain degree of salinity, the rapid movement of the tsunami will cause a slight change in some of its conductivity, passing through the earth’s magnetic field. Magnetic anomalies can be caused by time. If we deploy a magnetic anomaly sensor satellite or high air ball on the track, small changes in magnetic anomalies can occur. Based on data from the 2004 Sumatra and Chile 2010 tsunami records, the research team discovered the magnetic anomaly associated with the tsunami and then calculated the wavelength of the tsunami wave and the height of the tsunami. In principle, we can quickly complete the calculation of the tsunami wave curve based on the magnetic anomaly signal. If the technology is applied, we can significantly improve the existing ocean tsunami warning system and improve the early warning time of tsunami.
But how to build a magnetic anomaly detection network covering the ocean? The researchers believe that magnetic anomaly detectors can be deployed on high air balloons or on near-Earth orbit satellites to meet the detection of magnetic anomaly signals. Mano Nair, a geomagnetic expert at the University of Colorado, believes that the magnetic signal system through the tsunami may have been successful. The magnetic anomaly signal caused by the tsunami was monitored. Scientists involved in this task said that the next step will be to test tsunami waves in Easter Island. In addition, the research team plans to study the relationship between waves and tides and magnetic effects. Water changes that occur under surface seawater can be related to magnetic signals. Abnormal, and exchange between different seawater layers is also a factor.
If the magnetic anomaly detection network is built, humans may be less vulnerable to damage and tsunami.
All kinds of detectors
In fact, there are many kinds of detectors and they are very common in life. They are used in a variety of devices. Such as smoke detection in fire alarms, humidity detection in weather forecasting, temperature detection in household products, gas detection, and light sensing. Here we come to understand several common detection settings metal detection security gates. I believe we all know that when passing through security check at the airport through a security check, before passing the security door, to their own body items, such as mobile phones, watches, Rings, belts, etc. are all taken off. If there is such a metal object passing the security door, an alarm will be issued. The security door is a metal detector. Metal detectors use the principle of electromagnetic induction and use alternating coils to generate a rapidly changing magnetic field. This magnetic field can induce eddy currents inside metal objects. Eddy currents generate magnetic fields, which in turn affect the original magnetic field and cause the detector to sound.
Security door principle: The crystal oscillator generates 3.5-4.95M sinusoidal oscillation, which is divided by a frequency divider to a sine wave of 7.8K. After being amplified by the transistor and the coil, the input coil (7 area) is used to transmit electromagnetic waves. The coils in the 1-6 zone are received separately. After receiving, the received signal is compared with the reference signal. After the change is found, the output level of the acquisition card is changed. The CPU scans the data of the 6-bit acquisition card within 300 milliseconds to determine the location of the metal and display the output.
Structure 1, door structure: consists of a large coil, 6 small coils, compensation coils and graphite.
2, the chassis structure security door detection work flow: CPU detection → a group of infrared blocked → detect whether the acquisition card data changes → alarm → detect another set of infrared → reset re-probing.
Metal detection can be used not only for security but also for archeological investigations. In battlefield archaeology, most of the exhibits are metal. The specific evidence depends on the history of the battle. The most important tool for field archaeologists is a simple metal detector. Skilled metal detectors work together with archaeologists and conservationists to play an important role in field archeology. The conservationist is responsible for accurately recording the location of the discovered artifacts and performing “encapsulation, labeling, and markingâ€. . In other words, each artifact is encapsulated, tagged, and placed in the hole it was made when it was dug out, so that it can be pinpointed and mapped before it is removed for future research. .
Smoke detection Smoke detectors, also known as smoke detectors, smoke detectors, smoke detectors, smoke detectors, and smoke detectors, are primarily used in fire protection systems and are also used in the construction of security systems. It is a typical type of equipment that is transformed from space firefighting measures to civil use. Smoke detector adopts photoelectric sensor with special structure design and SMT chip production process. It has the characteristics of high sensitivity, stability, reliability, low power consumption, beautiful and durable, and easy to use. Circuits and power supplies can be self-tested for analog alarm testing.
Smoke detectors can also be divided into ion-smoke, photo-inductor, infrared beam-smoke, and gas detectors.
1. The ion-smoke-type smoke-smell-type smoke detector is a device that contains a small amount of radioactive material in the ionization chamber, which can make the ionized room air become a conductor, allowing a certain current to pass through the air between the two electrodes, and the rays make the local air become ionized. In the state, the ion flow is generated by the voltage, which gives the ionization chamber an effective conductivity. When the smoke particles enter the ionizing zone, they reduce the electrical conductivity of the air due to the bonding with the ions, resulting in the weakening of the ion movement. When the conductivity is below a predetermined value, the detector issues an alarm.
2. The photo-inductive smoke-type photo-electric smoke detector is also a typical detector. It was developed based on the basic property that the smoke produced during a fire can change the propagation characteristics of light. According to the absorption and scattering of light by smoke particles. Optical smoke detectors are classified into two types: light-blocking and astigmatism.
3. Infrared beam-smearing infrared beam smoke detectors are linear detectors, which are fire detectors that respond to flue gas parameters around a narrow strip in the alert range. It differs from the previous two types of point-type smoke detectors in that the linear smoke detector divides the light emitter and the photoreceptor into two separate parts. When used, the two parts are installed opposite to each other and the middle part is connected by a light beam. stand up. Infrared beam smoke detectors are divided into two types: radiation type and reflection type.
Smoke-detection fire detectors are suitable for installation in locations where there is a large amount of smoke or flame-retardant after a fire; it is not suitable to install in places where smoke is usually large or where ventilation speed is high.
4. Gas Detector Combustible gas detector adopts high quality gas sensor. The microprocessor combined with precision temperature sensor can intelligently compensate for the drift of gas sensor. It has a wide range of environment adaptability, stable operation, no need of debugging, and adopts ceiling installation method and simple installation. Easy to connect, widely used in homes, hotels, apartments and other places where flammable gases exist for safety monitoring. Can detect natural gas, liquefied petroleum gas, artificial gas. The detector operating voltage is DC powered. After the alarm can output a pair of relay passive contact signal (normally open, normally closed jumper settings), used to control the ventilation equipment or provide other equipment with normally open or normally closed alarm contacts. When the concentration of combustible gas in the environment reaches a set threshold, an audible and visual alarm signal can be emitted, and a relay passive contact signal can be output. When the ambient flammable gas concentration drops below the response threshold, the detector in alarm will automatically return to normal operation.
Space probes Space probes are also called space probes, deep space probes or space probes. Unmanned spacecraft that detect objects and space beyond the moon and moon, the main tool for space exploration. Space detectors have been developed on the basis of artificial satellite technology. However, compared with man-made earth satellites, space probes have some technically significant features: control and navigation. They are very important in aerospace applications, with slight errors. Will affect the entire plan. In order to ensure the orbit control engine working attitude is accurate, the communication antenna is always aligned with the earth and other systems work normally. The detector also has autonomous attitude control capabilities.
Pool probes make bad habits
When the summer arrives, it's nice to have a swim in the pool, but there are also many people who worry about the quality of the water in the swimming pool. Apart from some hair swarf and human sweat that affect the quality of the pool, what people hate most is those who urinate in the pool. It's right. If there is a thing that will allow this type of abuse to appear immediately, everyone will feel more at ease. Recently, researchers at a University in Texas invented such a device.
Pool detection device
Researchers developed the detection device, once the pool appears urine, the device will automatically send a green light to inform other swimmers flash fast, free from pollution! Researchers at Texas A&M University collected pool water through a cylindrical device and added zinc ions to make it chemically active to detect a chemical called urobilin, which urinates with urine and releases zinc. When combined with ions, they emit green light under ultraviolet light. No matter whether they are humans or livestock, they will have nothing to hide.
In addition to detecting urine, this probe can also be suspicious of liquids and gases.
Magnetic anomaly detection network forecast tsunami
This small detector can solve a major concern for everyone. Summer swimming can be assured! The means of this detection is to use the principles of biological electronics. In addition to this, there are many other means of detection using various principles that can give us solutions to life's problems. The tsunami is a terrible natural disaster that sounds like it. We cannot compete with the power of nature, but if we can predict the tsunami in advance, we can reduce the harm of the tsunami.
According to foreign media reports, scientists have discovered that magnetic anomalies can be used to warn of the occurrence of tsunami. Chinese engineers created a model to simulate the relationship between the Earth’s magnetic field and huge waves. The research team said that the study is helpful for construction. An early tsunami warning system, we can detect the magnetic anomaly caused by tsunami through the satellites deployed on the track, and then make a tsunami warning report. Tsunami's huge waves are often related to earthquakes. They can be tens of meters above sea level. If they occur in the coastal waters, tens of meters of waves can destroy everything on the land, with devastating effects. When the tsunami occurs in the ocean (offshore), its height is not large, and it may be difficult to find under the interference of waves on the ocean background.
Although the tsunami has a certain degree of concealment, it moves very fast and involves a lot of rapid changes in the seawater. Because the seawater has a certain degree of salinity, the rapid movement of the tsunami will cause a slight change in some of its conductivity, passing through the earth’s magnetic field. Magnetic anomalies can be caused by time. If we deploy a magnetic anomaly sensor satellite or high air ball on the track, small changes in magnetic anomalies can occur. Based on data from the 2004 Sumatra and Chile 2010 tsunami records, the research team discovered the magnetic anomaly associated with the tsunami and then calculated the wavelength of the tsunami wave and the height of the tsunami. In principle, we can quickly complete the calculation of the tsunami wave curve based on the magnetic anomaly signal. If the technology is applied, we can significantly improve the existing ocean tsunami warning system and improve the early warning time of tsunami.
But how to build a magnetic anomaly detection network covering the ocean? The researchers believe that magnetic anomaly detectors can be deployed on high air balloons or on near-Earth orbit satellites to meet the detection of magnetic anomaly signals. Mano Nair, a geomagnetic expert at the University of Colorado, believes that the magnetic signal system through the tsunami may have been successful. The magnetic anomaly signal caused by the tsunami was monitored. Scientists involved in this task said that the next step will be to test tsunami waves in Easter Island. In addition, the research team plans to study the relationship between waves and tides and magnetic effects. Water changes that occur under surface seawater can be related to magnetic signals. Abnormal, and exchange between different seawater layers is also a factor.
If the magnetic anomaly detection network is built, humans may be less vulnerable to damage and tsunami.
All kinds of detectors
In fact, there are many kinds of detectors and they are very common in life. They are used in a variety of devices. Such as smoke detection in fire alarms, humidity detection in weather forecasting, temperature detection in household products, gas detection, and light sensing. Here we come to understand several common detection settings metal detection security gates. I believe we all know that when passing through security check at the airport through a security check, before passing the security door, to their own body items, such as mobile phones, watches, Rings, belts, etc. are all taken off. If there is such a metal object passing the security door, an alarm will be issued. The security door is a metal detector. Metal detectors use the principle of electromagnetic induction and use alternating coils to generate a rapidly changing magnetic field. This magnetic field can induce eddy currents inside metal objects. Eddy currents generate magnetic fields, which in turn affect the original magnetic field and cause the detector to sound.
Security door principle: The crystal oscillator generates 3.5-4.95M sinusoidal oscillation, which is divided by a frequency divider to a sine wave of 7.8K. After being amplified by the transistor and the coil, the input coil (7 area) is used to transmit electromagnetic waves. The coils in the 1-6 zone are received separately. After receiving, the received signal is compared with the reference signal. After the change is found, the output level of the acquisition card is changed. The CPU scans the data of the 6-bit acquisition card within 300 milliseconds to determine the location of the metal and display the output.
Structure 1, door structure: consists of a large coil, 6 small coils, compensation coils and graphite.
2, the chassis structure security door detection work flow: CPU detection → a group of infrared blocked → detect whether the acquisition card data changes → alarm → detect another set of infrared → reset re-probing.
Metal detection can be used not only for security but also for archeological investigations. In battlefield archaeology, most of the exhibits are metal. The specific evidence depends on the history of the battle. The most important tool for field archaeologists is a simple metal detector. Skilled metal detectors work together with archaeologists and conservationists to play an important role in field archeology. The conservationist is responsible for accurately recording the location of the discovered artifacts and performing “encapsulation, labeling, and markingâ€. . In other words, each artifact is encapsulated, tagged, and placed in the hole it was made when it was dug out, so that it can be pinpointed and mapped before it is removed for future research. .
Smoke detection Smoke detectors, also known as smoke detectors, smoke detectors, smoke detectors, smoke detectors, and smoke detectors, are primarily used in fire protection systems and are also used in the construction of security systems. It is a typical type of equipment that is transformed from space firefighting measures to civil use. Smoke detector adopts photoelectric sensor with special structure design and SMT chip production process. It has the characteristics of high sensitivity, stability, reliability, low power consumption, beautiful and durable, and easy to use. Circuits and power supplies can be self-tested for analog alarm testing.
Smoke detectors can also be divided into ion-smoke, photo-inductor, infrared beam-smoke, and gas detectors.
1. The ion-smoke-type smoke-smell-type smoke detector is a device that contains a small amount of radioactive material in the ionization chamber, which can make the ionized room air become a conductor, allowing a certain current to pass through the air between the two electrodes, and the rays make the local air become ionized. In the state, the ion flow is generated by the voltage, which gives the ionization chamber an effective conductivity. When the smoke particles enter the ionizing zone, they reduce the electrical conductivity of the air due to the bonding with the ions, resulting in the weakening of the ion movement. When the conductivity is below a predetermined value, the detector issues an alarm.
2. The photo-inductive smoke-type photo-electric smoke detector is also a typical detector. It was developed based on the basic property that the smoke produced during a fire can change the propagation characteristics of light. According to the absorption and scattering of light by smoke particles. Optical smoke detectors are classified into two types: light-blocking and astigmatism.
3. Infrared beam-smearing infrared beam smoke detectors are linear detectors, which are fire detectors that respond to flue gas parameters around a narrow strip in the alert range. It differs from the previous two types of point-type smoke detectors in that the linear smoke detector divides the light emitter and the photoreceptor into two separate parts. When used, the two parts are installed opposite to each other and the middle part is connected by a light beam. stand up. Infrared beam smoke detectors are divided into two types: radiation type and reflection type.
Smoke-detection fire detectors are suitable for installation in locations where there is a large amount of smoke or flame-retardant after a fire; it is not suitable to install in places where smoke is usually large or where ventilation speed is high.
4. Gas Detector Combustible gas detector adopts high quality gas sensor. The microprocessor combined with precision temperature sensor can intelligently compensate for the drift of gas sensor. It has a wide range of environment adaptability, stable operation, no need of debugging, and adopts ceiling installation method and simple installation. Easy to connect, widely used in homes, hotels, apartments and other places where flammable gases exist for safety monitoring. Can detect natural gas, liquefied petroleum gas, artificial gas. The detector operating voltage is DC powered. After the alarm can output a pair of relay passive contact signal (normally open, normally closed jumper settings), used to control the ventilation equipment or provide other equipment with normally open or normally closed alarm contacts. When the concentration of combustible gas in the environment reaches a set threshold, an audible and visual alarm signal can be emitted, and a relay passive contact signal can be output. When the ambient flammable gas concentration drops below the response threshold, the detector in alarm will automatically return to normal operation.
Space probes Space probes are also called space probes, deep space probes or space probes. Unmanned spacecraft that detect objects and space beyond the moon and moon, the main tool for space exploration. Space detectors have been developed on the basis of artificial satellite technology. However, compared with man-made earth satellites, space probes have some technically significant features: control and navigation. They are very important in aerospace applications, with slight errors. Will affect the entire plan. In order to ensure the orbit control engine working attitude is accurate, the communication antenna is always aligned with the earth and other systems work normally. The detector also has autonomous attitude control capabilities.
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