31results about How to "The voltage signal is stable" patented technology

The invention provides a planar oxygen sensor, which comprises a heating layer, a reference gas layer and a sensing layer sequentially from bottom to top. The planar oxygen sensor is characterized in that the reference gas layer is provided with through holes, and closed reference cavities are formed at the through holes of the heating layer, the reference gas layer and the sensing layer. The reference gas layer is provided with the through holes, so that the combination area of the reference gas layer with the upper layer and the lower layer is enlarged, and product yield can be increased effectively. In addition, the sensing layer, the reference gas layer and the heating layer are stacked to form the closed reference cavities, so that voltage signals outputted by the planar oxygen sensor are stable.

The invention discloses a system for online real-time monitoring of switch machine indication bar notch width. The system comprises eddy current sensors, collectors, a central monitoring manager and remote monitoring centers. Each eddy current sensor comprises an eddy current probe and an eddy current circuit; the eddy current probe is used for converting a gap between a check post and a notch of a check block into an eddy current signal, and the eddy current signal is processed by the eddy current circuit and output. The collectors are used for collecting data output by the eddy current sensors. The central monitoring managers are connected with the collectors through power cords and are used for receiving data collected by the collectors, in a power line carrier manner. The remote monitoring center is connected with one or multiple central monitoring centers and is used for receiving data transmitted by the central monitoring managers. The system has the advantages that stability and reliability are improved, false alarm rate and false negative rate are zero, the eddy current sensors are higher in reliability, sensitivity, resolution, response speed and interference resistance during long-term operation, and the system is suitable for various switch machines and various application environments.

Provided are a semiconductor memory device and a method of driving the device which can improve a noise characteristic of a voltage signal supplied to a memory cell of the device. The semiconductor memory device includes a first semiconductor chip and one or more second semiconductor chips stacked on the first chip. The first chip includes an input / output circuit for sending / receiving a voltage signal, a data signal, and a control signal to / from an outside system. The one or more second semiconductor chips each include a memory cell region for storing data. The second semiconductor chips receive at least one signal through one or more signal paths that are formed outside the input / output circuit of the first chip.

The invention provides a circuit based on a magnetic tunnel junction, and a device based on the magnetic tunnel junction. The circuit based on the magnetic tunnel junction comprises a storage array module, a multipath bit line selector, a self-adaptive compensation module and a sensitive amplification module. The circuit based on the magnetic tunnel junction can carry out self-adaptive compensation on a voltage signal required by the input end of the sensitive amplification module according to a reference voltage; the speed of outputting a stable voltage difference or a comparison result by the sensitive amplification module is accelerated; the pre-charging time and the data reading period are shortened; the circuit is enabled to correctly read corresponding data in the storage array module, the data reading speed of the device is improved, the storage array module can be further enabled to be used for logic operation of the data, and correct operation of the logic operation can be ensured, so that a storage and calculation integrated function is realized, and the logic operation speed and the data throughput of the device can also be improved.

The invention discloses a 2D code based transmission system. The system comprises a data collector, a single-chip microcomputer, a display device, an analysis device, a target terminal and a cloud-end server; the data collector collects file data; the single-chip microcomputer compiles the file data into a 2D code; the display device displays the 2D code compiled by the single-chip microcomputer; the analysis device reads the 2D code displayed by the display device, analyzes the 2D code, and then transmits analysis data to the target terminal; the target terminal receives data obtained by analyzing the 2D code by the analysis device; and the cloud-end server is wirelessly connected with the analysis device, receives the data obtained by analyzing the 2D code by the analysis device, generates data that can be identified by the target terminal, and provides convenience in data analysis and gathering for merchants. Data is updated in real time and transmitted conveniently, redundant data lines are omitted, hardware requirement is lowered, educational cost of popularizing the system is reduced, and using habits of users is cultivated.

The invention discloses a system for online real-time monitoring of switch machine indication bar notch width. The system comprises eddy current sensors, collectors, a central monitoring manager and remote monitoring centers. Each eddy current sensor comprises an eddy current probe and an eddy current circuit; the eddy current probe is used for converting a gap between a check post and a notch of a check block into an eddy current signal, and the eddy current signal is processed by the eddy current circuit and output. The collectors are used for collecting data output by the eddy current sensors. The central monitoring managers are connected with the collectors through power cords and are used for receiving data collected by the collectors, in a power line carrier manner. The remote monitoring center is connected with one or multiple central monitoring centers and is used for receiving data transmitted by the central monitoring managers. The system has the advantages that stability and reliability are improved, false alarm rate and false negative rate are zero, the eddy current sensors are higher in reliability, sensitivity, resolution, response speed and interference resistance during long-term operation, and the system is suitable for various switch machines and various application environments.

The invention discloses a high stability optical coupling touch switch. The touch switch is characterized in that the touch switch is composed of an optical coupling chip U1, and a current switch chip U3. According to the invention, a user can turn on or turn off a lighting lamp simply by touching different touch pieces. Compared with traditional mechanical switches, the touch switch allows no mechanical friction, has long service life, and effectively avoids the problem of easy damage due to mechanical friction of a mechanical switch.

The invention provides a circuit based on the magnetic tunnel junction and a device based on the magnetic tunnel junction. The circuit based on the magnetic tunnel junction includes a memory array module, a multi-way bit line selector, an adaptive compensation module and a sensitive amplification module. The circuit based on the magnetic tunnel junction can adaptively compensate the voltage signal required by the input terminal of the sensitive amplifying module according to a reference voltage, so as to speed up the speed at which the sensitive amplifying module outputs a stable voltage difference or a comparison result, and shorten the pre-charging The time and data reading cycle ensure that the corresponding data in the storage array module can be read correctly, improve the data reading speed of the device, and further enable the storage array module to be used for data logic operations, and can ensure the accuracy of logic operations If it is done correctly, the integrated function of storage and calculation can be realized, and the logic operation speed and data throughput of the device can also be improved.

The invention provides a dimmable light-emitting diode (LED) driving power supply, comprising an electromagnetic-interference resisting unit, a rectifying unit, a current transforming unit, a silicon-controlled unit, a dimming unit and a strobing resisting unit. The strobing resisting unit comprises two diodes, a resistance-capacitance network, a voltage follower, a transistor and a field-effect transistor; the anodes of the two diodes are connected with the silicon-controlled unit, and the cathodes of the two diodes are connected with the drain electrode of the field-effect transistor and are also connected with one input end of the voltage follower through the resistance-capacitance network; the other input end of the voltage follower is connected with the output ends of the diodes; the source electrode of the field-effect transistor is connected with the collector electrode of the triode through the resistance, and the collector of the triode is connected with the ground; signals output by the voltage follower are used for controlling the work state of the triode; and when the conduction angle of the field-effect transistor decreases and is in the wave trough, the triode is fully conducted with the field-effect transistor to maintain the conduction current of the silicon-controlled unit, thereby ensuring the silicon-controlled unit to be in the conduction state and preventing the silicon-controlled unit from being conducted repeatedly to strobe.

The invention discloses a multi-circuit processing-type auto-on-off control system for an illuminating lamp, which is mainly composed of a diode rectifier U, a sound sensor MIC, a transistor VT2, transistor VT3, a transistor VT4, a switch S, a current adjustment circuit, a high resistance filter circuit, a thyristor voltage stabilization circuit, and a rectification and amplification circuit connected to the A output end of a sound sensor MIC, the base electrode of a transistor VT2, and the base electrode of a transistor VT4 respectively. The system can realize the auto-on-off of the illuminating lamp by the ambient brightness change and the sound information in the use range of the illuminating lamp, and filters and amplifies the voltage signal outputted by the sound sensor MIC so as to make the voltage signal more stable, so that the control effect is ensured, the problem that the illuminating lamp is wrongly turned on is effectively solved, and the power resource is greatly saved.

The invention discloses a biologic induction floor, which comprises a tire cloth layer, a biologic induction layer and a back cloth layer, wherein an exciting conducting wire and an induction conducting wire are arranged in the biologic induction layer; cooperated with the biologic induction layer, the floor also comprises a leading wire, a pulse signal generator, a triode, a step-up transformer, a processor and an alarm, wherein the exciting conducting wire is used for forming an induced electric field; the induction conducing wire is located in the induced electric field, and is used for inducing the information that the change of the induced electric field caused by the biologic magnetic field of a human body, and transmitting the induced information of the induced electric field to the processor; the processor is used for receiving the information of the induced electric field that is induced by the induction conducting wire, and judging whether the alarm is needed to be started or not according to the information. By using the biologic induction floor provided by the invention, the self regulation of working parameters can be realized; the biologic induction floor sufficiently adapts to the interference of an external environment; the false alarming and the omitted alarming which are caused by a small animal, a non-living thing and the physioclimate are removed; the application range and the reliability of the biologic induction floor are improved.

The invention discloses a biological induction alarm device and a using method thereof. The device comprises an excitation module used for producing an induced electric field, an induction module used for collecting information about the induced electric field, a control module used for adjusting the intensity of the induced electric field in real time and automatically and judging whether there is a need to raise the alarm, and an alarm module used for sending out an alarm signal. The alarm device is controlled by the control module flexibly and automatically, and thus can adapt to the interference of the external environment. Meanwhile, the interference of small animals to the alarm device is avoided, and the application range and reliability of the alarm device are improved.

The invention provides a planar oxygen sensor, which comprises a heating layer, a reference gas layer and a sensing layer sequentially from bottom to top. The planar oxygen sensor is characterized in that the reference gas layer is provided with through holes, and closed reference cavities are formed at the through holes of the heating layer, the reference gas layer and the sensing layer. The reference gas layer is provided with the through holes, so that the combination area of the reference gas layer with the upper layer and the lower layer is enlarged, and product yield can be increased effectively. In addition, the sensing layer, the reference gas layer and the heating layer are stacked to form the closed reference cavities, so that voltage signals outputted by the planar oxygen sensor are stable.

The invention discloses a lighting lamp automatic on-off control system which is mainly composed of a diode rectifier U, a sound sensor MIC, a transistor VT2, a transistor VT3, a transistor VT4, a switch S, a thyristor voltage stabilization switch circuit, a rectifier amplifier circuit which is connected with the sound sensor MIC, the base of the transistor VT2 and the base of the transistor VT4 and the like. According to the invention, through the ambient brightness change and sound information within the use scope of a lighting lamp, automatic on and off of the lighting lamp are realized; a voltage signal output by the sound sensor MIC is filtered and amplified to stabilize the voltage signal; the control effect of the control system provided by the invention is ensured; the problem that the lighting lamp is erroneously turned on is effectively solved; and power resources are greatly saved.

The invention discloses a fault monitoring system and a monitoring method for photovoltaic power generation equipment of the Internet of Things, belonging to the field of photovoltaic power generation equipment of the Internet of Things; a fault monitoring system and monitoring method for photovoltaic power generation equipment of the Internet of Things, including: data Acquisition unit, fault monitoring unit, power management unit, power amplification module, signal adjustment unit, data storage module, communication unit, and energy storage unit; the present invention carries out the Internet of Things framework design for the monitoring sensor array, and then judges the communication signal; At the same time, a judgment network is established and input to the system to judge the type of fault; at the same time, the system will increase the signal conversion rate through the power amplifier module, and at the same time perform gain amplification and band-pass filtering on the input voltage, so as to accurately collect multi-channel monitoring in real time Data, the bandwidth of the data output is high, and the balance of the acquisition and output channels is better, which improves the accurate detection and analysis capabilities of the remote monitoring data of photovoltaic power generation.

Disclosed in the invention is a high-impedance filtering type self-on-and-off control system for an illumination lamp. The system is composed of a diode rectifier U, a sound sensor MIC, a triode VT2, a triode VT3, a triode VT4, a switch S, a high-impedance filter circuit, a thyristor voltage-stabilizing switching circuit, and a rectification amplification circuit connected with an A output terminal of the sound sensor MIC, a base electrode of the triode VT2, and a base electrode of the triode VT4. Self starting and closing of an illumination lamp are realized according to environmental brightness changing and sound information in an illumination lamp usage range and the voltage signal outputted by the sound sensor MIC can be filtered and amplified, so that the voltage signal becomes stable, so that the control effect can be ensured, a problem that the illumination lamp is turned on by mistake can be solved, and the power resources can be saved substantially.

The invention discloses a current adjustment type automatic on-off control system for a lighting lamp. The current adjustment type automatic on-off control system mainly comprises a diode rectifier U, a sound sensor MIC, a triode VT2, a triode VT3, a triode VT4, a switch S, a current adjustment circuit, a thyristor voltage stabilization switch circuit and a rectification amplification circuit, wherein the rectification amplification circuit is connected with the sound sensor MIC, a base of the triode VT2 and the a base of the triode VT4. Automatic on-off of the lighting lamp can be achieved according to environmental brightness change and sound information of the lighting lamp within an application range, a voltage signal output from the sound sensor MIC can be filtered and amplified, so that the voltage signal is more stable, the control effect of the current adjustment type automatic on-off control system is ensured, the problem that the lighting lamp is turned on by mistake can be effectively solved, and the power resource is greatly saved.