Apparatus for computing conveyor belt mass flow rate including a radioactive source detector and slide-wire linearizer multiplier专利检索-放射源核能专利检索查询-专利查询网

Apparatus for computing conveyor belt mass flow rate including a radioactive source detector and slide-wire linearizer multiplier

阅读：53发布：2023-04-05

专利汇可以提供Apparatus for computing conveyor belt mass flow rate including a radioactive source detector and slide-wire linearizer multiplier专利检索，专利查询，专利分析的服务。并且Structure for and a method of determining the mass of material moving past a predetermined point on a conveyor belt including a radioactive C-frame through which the conveyor belt passes operable to provide a signal proportional to the density of the material on the belt passing through the C-frame, rotating wheel structure maintained in contact with the conveyor belt for providing a signal proportional to the speed of the conveyor belt as it passes through the C-frame, and structure for linearizing the signal from the C-frame and providing a functional multiplication of the density signal and conveyor belt speed signal to provide an output signal proportional to the mass of material passing through the C-frame. A mass rate indicator and a total mass register provides desired indications of the mass moving on the conveyor belt in response to the output signal proportional to the mass of material.，下面是Apparatus for computing conveyor belt mass flow rate including a radioactive source detector and slide-wire linearizer multiplier专利的具体信息内容。

权利要求

1. Mass computation structure comprising means for providing a signal proportional to the density of material passing a predetermined point on a moving conveyor belt, means for providing a signal proportional to the speed of the belt passing the predetermined point and a linearized slide-wire multiplier connected to the means for providing a signal proportional to the density of the material passing the predetermined point and the means for providing a signal proportional to the speed of the belt for combining the signals proportional to the density of the material and speed of the belt to provide a signal proportional to the mass of material passing the predetermined point including an elongated resistance element connected at the opposite ends thereof to receive the signal proportional to the density of the material passing the predetermined point, motor means, means for positioning a wiper arm on the elongated resistance element in accordance with the rotation of the motor, means for rotating the motor in response to and an amount representing the signal proportional to the speed of the belt passing the predetermined point, means for taking an output from one end of the elongated resistance element and from the wiper arm and a series string of a plurality of separate variable resistance elements connected in parallel with the elongated resistance element for linearizing the slide-wire multiplier and wherein the means for providing a signal proportional to the density of the material passing a predetermined point on the moving conveyor belt comprises a radioactive source positioned on one side of the conveyor belt and radioactivity sensing means responsive to radioactive radiation to provide and electric signal proportional thereto positioned on the opposite side of the conveyor belt whereby radiation from the source of radioactive radiation passes through the material on the conveyor belt and is sensed by the radioactivity sensing means to produce a signal proportional to the density of material moving on the conveyor belt.

2. Structure as set forth in claim 1 wherein the means for providing a signal proportional to the speed of the conveyor belt passing the predetermined point comprises means for producing a digital signal proportional to the speed of movement of the belt including a pivot mounting, a lever centrally pivoted to the pivot mounting, a wheel engaged with the conveyor belt rotatably mounted on one end of the lever, a weight on the other end of the lever for holding the wheel in engagement with the conveyor belt with a predetermined force, a toothed disc secured to the wheel for rotation therewith, an electromagnetic pickup device secured to the lever immediately adjacent the periphery of the disc operable to produce a pulse of electric energy each time a tooth of the disc passes the electromagnetic pickup device, and a digital-to-analog converter connected to the electromagnetic pickup device for receiving the digital signals produced thereby and converting the digital signals into an analog signal usable in the linearized multiplier.

3. Structure as set forth in claim 2 further including temperature control means connected to the means responsive to radioactive radiation for compensating for effect of temperature on the means responsive to radioactive radiation.

4. Structure as set forth in claim 2 wherein the output from the linearized multiplier is analog and further including an analog-to-digital converter connected to the linearized multiplier for providing a digital output signal proportional to the analog signal output of the linearized multiplier, a counter connected to the analog-to-digital converter for counting the digital signal output from the analog-to-digital Converter and a register connected to the counter for registering the number of digital signals counted by the counter.

5. Structure as set forth in claim 2 wherein the output from the linearized multiplier is analog and further including a rate indicator for receiving the analog output of the linearized multiplier and providing an indication of the rate of material passing the predetermined point on the conveyor belt and a calibrating network positioned between the linearized multiplier and the rate indicator for calibrating the rate indicator to read directly in predetermined units of material passing the predetermined point.

说明书全文

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Apparatus for computing conveyor belt mass flow rate including a radioactive source detector and slide-wire linearizer multiplier

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