159results about How to "Easy to understand purpose" patented technology

The invention relates to a control device of cool medium recycling quality for multi-connected air conditioner and the control method. The device comprises adjusting device for cool medium quality, electromagnetic valve, electronic expansion valve, suction temperature sensor and pressure sensor of low pressure. The adjusting device is connected to the position between condensator and electronic expansion device by main pipe and in the cavity branching pipe is set on. On the branching pipe electromagnetic valve is set in series. One branching pipe is connected with the drainage pipe of compressor and the other is connected with suction pipe. The suction pipe of compressor is connected with the pressure sensor of low pressure and suction temperature sensor. When the system runs normally, the electronic expansion valve is adjusted to control the quality of cool medium. When the opening degree of electronic expansion valve is over the range, the electromagnetic valve is adjusted to control the quality of cool medium again. In this way residual cool medium in the device is recycled to the system so as to take part in running newly and the cycling quality of cool medium is controlled in time under any condition.

The invention provides an obstacle detection alarm system and method. An interest interval is set through an image processing technology to further judge whether a horizontal line signal exists, and the obstacle of certain height is detected according to the detection of obstacle profile and estimation of the distance between obstacles at a ground interval; if the system detects that the obstacleexists, the system can provide an timely alarm and display the obstacle distance through an alarm device; and an environment picture can be displayed by use of an image type obstacle detection alarm system in combination of the alarm device so that a driver can directly and clearly see the relative position relationship of the environment and the convenience and safety are enhanced.

The invention provides a system and a method for determining an obstacle by using aerial view images, relates to technology for determining the obstacle around a vehicle by aerial view image technology. A plurality of image acquisition devices which are arranged at different positions are used for acquiring a plurality of images around a vehicle body respectively, and the plurality of images are at least provided with an overlapping region; an image processor performs independent aerial view image conversion on the images; and an obstacle calculating unit compares the correlation of repeat regions of two independent aerial view images and judges whether the obstacle exists or not according to the size of the correlation. In addition, a mapping table of a group of space conversion data is constructed and comprises driving state data such as the steering wheel angle, gear or speed of the vehicle, and the like, so when the driving state is changed, a panoramic aerial view image at an appropriate viewing angle is quickly converted through the mapping table, and the position of the obstacle measured by the obstacle calculating unit is marked on the panoramic aerial view image; therefore, the safe driving of a user is facilitated.

Provided is an image identification method for inventory management and marketing. First, an image including a plurality of commodities is captured, and the commodities are compared with object information pre-stored in a database so as to detect, separate and identify the commodities in the image by use of an image identification technology. When a comparison result shows that one commodity is consistent with a piece of object information pre-stored in the database, the commodity and the object information consistent with the commodity can be stored in a data account of the database together, and the data account can be updated according to additional object information and added to the database, thus achieving the purpose of expanding the database and the data account. Second, the current position of a device of a user can be detected so as to display commodity information on the device of the user. A map can be displayed on the device of the user, the actual position of each commodity can be indicated by use of the map, and a better path from the current position of the user to the actual position of each commodity can be provided.

The invention discloses a real-time traffic sign control method of a group intersection and a method for predicting green time needed for dredging a vehicle stream at the intersection. The methods comprise the following steps of: distinguishing main vehicle stream paths at the group intersection, configuring the time phases of the main vehicle stream paths according to vehicle stream paths; and then, by virtue of a contour principle, setting at least one vehicle detector on each main vehicle stream path to detect the vehicle stop waiting conditions of the main vehicle stream paths; furthermore, obtaining various impact waves according to the vehicle stop waiting time conditions; further, predicting the green time needed by each vehicle stream path by means of an impact wave principle; and finally, optimally distributing the predicted needed green time so as to obtain the balanced green time of each main path.

The invention provides a head-up display device at least comprising an image display unit capable of generating one or more input images and a rotary mechanism, wherein at least one virtual image generating element is used for receiving the input images and generating at least one virtual image, and the rotary mechanism enables the virtual image generating element to change the projection angle of the virtual image so that the virtual image is projected to a plurality of perspective plane mirrors and correspondingly received and the virtual image of a large area is formed through reflection. The head-up display device can directly reduce the size of a lens or an optical element of a mirror, is miniaturized but has a large image display range. A required carrier information image is totally overlapped with an external image, and the problems that a single-light-path image display device is used in the past, images can only be displayed in a small area, and the images can not be displayed in a large area are solved.

The invention provides a low-pollution device for condensing, accumulating heat and incinerating, which comprises a zeolite rotating wheel, a heat accumulating type incinerator, a pipeline group and a recycling pipeline group. The zeolite rotating wheel is used for condensing waste gas; the heat accumulating type incinerator can be used for combusting the waste gas; the pipeline group comprises a pipe fitting group communicated with the zeolite rotating wheel, the heat accumulating type incinerator and a discharge chimney, and a valve group for controlling circulation of internal gas in the pipe group; and the recycling pipeline group is connected with the pipeline group to assist recycling of the discharged waste gas. The device utilizes self differential pressure power to recycle and treat high VOC-concentration waste gas discharged when valve members are switched, so as to achieve the effects of improving treating efficiency of the waste gas and reducing environmental pollution.

A system of using mobile terminal to carry out mobile office work is prepared as detecting out new event and sending it to mobile terminal by mobile office work module when new event is occurred on office automation server, prompting user to concern new event by mobile terminal and utilizing the propelling technology to carry out work, transmitting operation result of user back to mobile office work module through radio network by mobile terminal and updating office automation server for finalizing office work flow process assigned by user.

The invention provides a foot stand with the lamp effect. The foot stand comprises a foot stand main body, a light source, a fixed bracket and a controller. The light source is arranged on the foot stand main body or the fixed bracket. The foot stand can directly emit light to form the lamp effect or is further provided with a light guide medium for the light source to irradiate the light guide medium to generate different lamp effects. Meanwhile, the on-off, the brightness and the color changes of the light source are controlled by the controller, so that various static or dynamic lamp effects can be achieved under the condition that the normal function of the foot stand is not influenced.

The invention discloses a conversion device which comprises a high side metal oxide semiconductor field effect transistor (MOSFET) chip provided with a first high side source which is connected to a low side drain of a low side metal oxide semiconductor field effect transistor chip. The conversion device also comprises a transient reverse current transfer circuit which is connected to a drain of a low side metal oxide semiconductor field effect transistor chip to transfer a reverse transient current so as to transfer a reverse transient current passing through one body diode of the low side metal oxide semiconductor field effect transistor chip when the low side metal oxide semiconductor field effect transistor chip is closed, and to reduce the vibration of transient ringing. The reverse transient current transfer circuit comprises a diode which is used to guide a reverse transient current from the drain. The reverse transient transfer circuit also comprises a capacitor which is connected between the diode and the low side metal oxide semiconductor field effect transistor chip.

The invention relates to a field order type liquid crystal display device and a driving method of the device, when lightening a light source, reading-in color data and driving all the pixels on the liquid crystal display device to a specific gray scale. The displayed original color can be orderly alternated in turn at least with the three colors of red, green and blue, and the time of reading-in the original color data is the same with that of the specific gray scale, thereby a backlight module can eliminate the time of liquid crystal reflection during the display process, and the control of the original color data read-in and the driving of the specific gray scale can be executed by the same control IC.

If minimal capacitance change of fingerprint peak and fingerprint valley in a fingerprint needs to be sensed by utilizing capacitance sensing, a high-sensitivity sensing circuit must be designed. However, higher the sensitivity of the sensing circuit is, larger the noise accompanied therewith is, and especially for the press-type capacitance sensing array, a capacitance sensing unit and the accompanied noise change with the difference at different lines and rows. The fingerprint sensor can eliminate possible stray capacitance in the circuit layout, and furthermore, is configured with an offset elimination circuit; the offset elimination circuit has two different capacitors so as to carry out optimum processing on the capacitance sensing noise; and then, fingerprint peak and fingerprint valley signals passing through the offset elimination circuit can be connected to an amplifier to improve individual signal intensity. Therefore, through the two capacitors of the offset elimination circuit, the signals of each sensing electrode is allowed to be optimum.

The invention discloses an infrared position sensing device, and the device comprises a thermopile sensing element and a signal processor. The thermopile sensing element senses the infrared light emitted in a sensing range, and outputs a corresponding first sensing signal. The signal processor is electrically connected with the thermopile sensing element, and processes the first sensing signal, soas to obtain a background sensing value and a current sensing value. The signal processor judges whether the difference between the current sensing value and the background sensing value is greater than a first critical value or not, so as to determine whether there is a target object in the sensing range, and output a corresponding first control signal. The device still can recognize whether a human body is in the sensing range or not under the condition that human body is stationary.

The invention provides a method for assisting a dispatching company to assess the working stability of a dispatched person. The method is characterized in that a biographical questionnaire is provided by a server and downloaded into electronic equipment by utilizing a network by the electronic equipment, wherein a plurality of questions are written in the biographical questionnaire, each question provides at least two options for the dispatched person to answer, and then the dispatched person answers the questions in the biographical questionnaire; after the dispatched person fills all the questions, the biographical questionnaire is uploaded into the server by the electronic equipment by utilizing the network, and the server gives a score to each answer to the question of the dispatched person, wherein different answers can have corresponding different scores; and after the scores corresponding to all the questions are accumulated by the server, a total score is calculated by the server, and a working stability value of the dispatched person related to the total score is also calculated.

A ball grid array package structure, it sets multiple bumps in a ball grid array (BGA) substrate, and when making surface mount technology (SMT), it has more a supporting role to avoid the package structure bursting apart due to external force pressure, and also when the users use this semiconductor packaging module, the package structure can avoid damaging due to external force pressure.

The invention relates to an adaptive compensation power device and the driving method, the device comprises two circuit reference powers, an attenuation detecting unit, a difference comparing unit, wherein the attenuation detecting unit is electrically connected and the digital direct current reference power is accepted. A voltage difference and a difference compensation unit are obtained after contrasting the voltages of the analogous circuit reference power and the digital direct current reference power. The invention utilizes a detecting circuit to detect the drift amount of the analogous circuit reference power to the reference position in an analogous source drive, and provides an compensation potential, and outputs a stable direct current voltage as the analogous circuit reference power after compensation to balance the output reference position differences of the every analogous source drives, further eliminates the block defects between the adjacent intervals of a panel.

Disclosed in the invention is a negative voltage detection apparatus. The apparatus is characterized in that a sampling circuit is electrically connected to a positive voltage ground terminal and a negative voltage ground terminal; and thus a voltage drop is generated based on a voltage difference of the two ground terminals and a sampling current is generated. A current transformer is electrically connected to the sampling circuit and a negative pressure reference node, so that the sampling current is outputted relatively and conveniently when the voltage drop is generated. A first voltage-dividing sampling resistor is electrically connected to a positive voltage reference node and a connecting node and a second voltage-dividing sampling resistor is electrically connected to the negative voltage reference node and the connecting node; and the resistance values of the first voltage-dividing sampling resistor and the second voltage-dividing sampling resistor are equal. When the sampling current outputted by the current transformer passes through the second voltage-dividing sampling resistor and then a negative sensing voltage is generated at the connecting node. Therefore, the precise negative sensing voltage can be detected effectively and the negative sensing current or power of the voltage can be obtained.

The invention provides an infrared temperature measurement device with a communication function, which is characterized in that a control module is arranged in a shell and the control module is electrically connected with an infrared temperature sensing unit, a communication interface, a measurement key, a transmission key and a power supply starting key, so that when a medical care personnel measures the temperature of a patient, the power supply starting key is pressed and the control module is used for supplying power to start the infrared temperature measurement device; the control module receives actuating signals of the measurement key and the temperature of the patient is captured through the infrared temperature sensing unit; the medical care personnel connects the communication interface of the infrared temperature measurement device with a host computer through a pluggable type communication connection wire; and then the transmission key or a common key is pressed and a result is transmitted to the host computer by the control module. According to the infrared temperature measurement device provided by the invention, an ear thermometer or a forehead thermometer is selectively connected with the host computer in a detachable way, so that the infrared temperature measurement device can be adaptive to operation states of measuring or transmitting data and is convenient for the medical care personnel to use.