The invention provides a calibration device and method of a double-loader electronic belt scale. The device comprises a belt, a first loader, a second loader, a speed measuring sensor and a weighing instrument. The first loader comprises a first weighing sensor. The second loader comprises a second weighing sensor. The weighing instrument is electrically connected with the first weighing sensor and the second weighing sensor respectively. A first interface and a second interface of the weighing instrument are respectively used for collecting gravity signals of transmitted materials measured by the first weighing sensor and the second weighing sensor in time intervals such as a preset first time interval, a calibration period and a preset second time interval; a third interface is used for receiving transmission speed signals sent by the speed measuring sensor; and a signal processing unit is used for calculating a second calibration coefficient of the first loader, for calculating a second calibration coefficient so as to finish calibrating the second loader, and for calculating a third calibration coefficient of the first loader so as to finish calibrating the first loader.

Calibration device and method of double-loader electronic belt scale

The invention discloses a built-in anti-static side key structure and a mobile terminal employing the same. The built-in anti-static side key structure includes an outer shell. Press key feed point and metal grounding points for grounding treatment are arranged on the inner side of a frame, corresponding to a pressing area, of the outer shell. Each press key feed point and the corresponding metal grounding point are arranged in a spaced manner. When the pressing area corresponding to the outer shell is pressed, the press key feed point in the pressing area is in contact with the corresponding metal grounding point, so that generation of a key signal is triggered. A terminal main board is provided with a processor. The processor is connected with the press key feed point. The processor is used for receiving the press key signals produced by contact of the press key feed point and the corresponding metal grounding point and performs control operation corresponding to the key signal when detecting that the lasting time of the press key signals reaches a predetermined threshold value. According to the invention, hole drilling in the shell is avoided and no gap exists between the press keys and the shell. The structure provided by the invention is nice in appearance and problems caused by static can be avoided.

Built-in anti-static side key structure and mobile terminal employing same

The invention provides a material weighing control device, system and method, belonging to the field of weighing. The device includes a receiver for receiving a first material weight measured by a first weight measuring device and receiving a second material weight measured by a second weight measuring device connected to the first weight measuring device in series, a controller which is used forjudging whether a difference between the first material weight and the second material weight exceeds a preset value for a predetermined period of time and determining a fault of the first weight measuring device or the second weight measuring device if the difference between the first material weight and the second material weight exceeds the preset value for the predetermined period of time. Inthe process of concrete production, the invention provides the material weighing control device, system and method, unqualified products are avoided in time, and the production efficiency is improved.

Material weighing control device and system and method

The invention relates to the technical field of power supply equipment, and provides an explosion-proof emergency power supply device. The device comprises a shell assembly and a detection device arranged in the shell assembly. The explosion-proof emergency power supply device further comprises a push rod assembly used for opening or closing the detection device and an indication window assembly used for observing the working state of the detection device, an installation hole and an installation groove are formed in the shell assembly, the push rod assembly is arranged in the installation hole, and the indication window assembly is arranged in the installation groove. According to the explosion-proof emergency power supply device provided by the invention, the indication window assembly is arranged at the indication groove of the shell assembly and is used for observing the working state of the detection device. When a circuit system of the explosion-proof emergency power supply device breaks down, the push rod assembly located in the installation hole is pushed, so that the detection device is triggered and started, self-inspection is carried out on the circuit system of the explosion-proof emergency power supply device, self-inspection action can be completed without opening the shell assembly, and the whole process is simple and rapid.

Explosion-proof emergency power supply device

The invention relates to a dual-metering belt scale. A cross beam supports a driving roller and a driven roller; a belt is installed between the driving roller and the driven roller; a conveyed objectis moved via the belt; a roller support is installed at the bottom of a driven roller support; a driving device is installed on a front support of the driving roller opposite to the driven roller support; a hinge support is installed at the bottom of the front support of the driving roller; the driving roller is driven to move via a driving device; the driving roller is equipped with a photoelectric tachometer; a measuring section is arranged in the middle of the cross beam; a rolling wheel is installed on the driven roller support; a force sensor is installed below the rolling wheel; the data conveyed via the force sensor and the photoelectric tachometer is subjected to metering of conveyed objects; still, the mass of the conveyed object is metered by using signals of a stain gauge and atemperature sensor, and the conveyed mass per unit time, the cumulative conveyed mass and cumulative time are displayed. The dual-metering belt scale provided by the invention has two kinds of metering methods and high precision, is suitable for horizontal belt scales and inclined belt scales, does not affect the precision, can weigh uneven materials, and can ensure a certain accuracy.

Dual-metering belt scale

The invention provides a touch button device for explosion-proof electric equipment. The touch button device comprises an explosion-proof shell, a touch sensor and a control circuit board, wherein a containing cavity is formed inside the explosion-proof shell; the touch sensor comprises a grounded metal plate, a metal sensing key and an insulating medium layer, the metal sensing key is arranged on the grounded metal plate, the insulating medium layer is arranged between the grounded metal plate and the metal sensing key, and the grounded metal plate is arranged on the inner surface of the explosion-proof shell; the control circuit board is connected with the touch sensor and arranged inside the explosion-proof shell, and an output interface of the control circuit board is electrically connected with a control system of the explosion-proof electric equipment. The touch sensor is used for detecting that an inductor gets close so that an operator can control the electric equipment inside the explosion-proof shell outside the explosion-proof shell. The touch button device is simple in structure and reliable in performance, and no hole needs to be formed in the explosion-proof shell. The touch button device for the explosion-proof electric equipment is simple in structure and high in safety performance.

Touch button device for explosion-proof electric equipment

The utility model provides a calibration arrangement for two loader electronic belt conveyor scale, the device includes: the belt, first loader, the second loader, the tacho sensor and the instrument of weighing, first loader includes a weighing sensor, the second loader includes the 2nd weighing sensor, the instrument of weighing respectively with a weighing sensor, the 2nd weighing sensor and tacho sensor electricity is connected, the first interface of the instrument of weighing, second interface are used for respectively in presetting the very first time, in the demarcation cycle, preset the gravity signal of gathering a weighing sensor, the 2nd weighing sensor measuring transmission material in interior class of time interval ground of second time, the third interface for receive the transmission speed signal that tacho sensor sent, signal processing unit for calculate the 2nd calibration coefficient of first loader, calculate the 2nd calibration coefficient of second loader to the completion is to the demarcation of second loader, calculate the 3rd calibration coefficient of first loader to the completion is to the demarcation of first loader.

Calibration arrangement for two loader electronic belt conveyor scale

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Touch button device for explosion-proof electric equipment

Calibration device and method of double-loader electronic belt scale

Calibration arrangement for two loader electronic belt conveyor scale