Leading edge technology
User friendly features
Interested?
>> contact us 

 

 

 

 

 

See how vehicle monitors can help your facility
>> see how vehicle monitors can help your facility

>>科学原理

>核辐射对人体的危害
问：核辐射对人员有哪些危害作用？
答：放射性物质以波或微粒形式放射出的一种能量就叫核辐射，核爆炸和核事故都有核辐射。它有a.b和y三种辐射形式。
A辐射只要用一张纸就能挡住，但吸入体内危害大；b辐射是高速电子，皮肤沾上后烧伤明显；y辐射和x射线相似，能穿透人体和建筑物，危害距离远。宇宙、自然界能产生放射性的物质不少，但危害都不太大，只有核爆炸或核电站事故泄漏的放射性物质才能大范围地对人员造成伤亡。
放射性物质可通过呼吸吸入，皮肤伤口及消化道吸收进入体内，引起内辐射，y辐射可穿透一定距离被机体吸收，使人员受到外照射伤害。内外照射形成放射病的症状有：疲劳，头昏、失眠、皮肤发红、溃疡、出血、脱发、白血病、呕吐、腹泻等。有时还会增加癌症、畸变、遗传性病发生率，影响几代人的健康。一般讲，身体接受的辐射能量越多，其放射病症状越严重，致癌、致畸风险越大。

>人体对核辐射承受的限度
放射性物质广泛存在于地质层中，人的身体对放射性的承受能力有一定限度，过度了则有可能引起不适和病变。放射性物质超过一定标准会使人体免疫系统受损害，并诱发类似白血病的慢性放射病。 核辐射对人体的危害取决于受不同辐射的时间以及辐射量。以下是遭受的辐射量的后果：
1 腿部或者手臂进行 X光检查时的辐射量；
8 建筑材料每年所产生的辐射量；
10 乘飞机时遭受的辐射量；
60 人体内的辐射量；
700 大脑扫描的核辐射量；
5000 每年的工作所遭受的核辐射量；
10000 患癌症的可能性为1／130；
60000~100000 出现各种辐射疾病；
200000~450000 掉头发，血液发生严重病变，一些人在2至6周内死亡；
450000~800000 30天内将进入垂死状态。

>>事故案例
In order to provide reliable and rugged state-of-the-art detectors suitable for any hostile environment, Radcomm uses nothing but lab-quality components, such as premium grade PVT and components using low noise design technology.

Offering the largest detector coverage available today at 68” vertical and 31” wide, Radcomm’s RC4138 two detector truck system provides premium top to bottom coverage, without sacrificing dwell time. Similarly, the Cricket grapple mounted system comes in four detector sizes, engineered to fit most grapples used in the steel industry today. Each of Radcomm’s conveyor and charge bucket detector applications are designed and engineered to fit customer specific applications.
>> Highest detection probability and fewest false alarms
Radcomm engineers have developed proprietary technology that not only tracks the pulse count rates from the PVT scintillator but applies a special characterization analysis on each pulse. The key benefit of this “characterization” is the knowledge that specific isotopes will produce predictable results.

Characterization is used to eliminate any major fluctuations caused by varying densities in loads of scrap metal, along with any atmospheric changes that might affect a reading. This technique is similar to what is utilized in gamma ray spectroscopy where a sodium iodide scintillator is used. Characterization is a signal processing technique that focuses on real-time system noise cancellation, correction of ambient background variations and maintaining extremely accurate alarm threshold settings, all resulting in higher radiation detection sensitivity and the fewest false alarms.

The radiation detection process of characterization is a four-stage process:

 >> Reduction of electronic “noise”
The front-end of Radcomm’s electronic circuitry has been kept to an absolute minimum thus significantly decreasing the introduction of electric noise to the system.
>> Every pulse is analyzed
The second stage of Radcomm’s electronics utilizes advanced signal discrimination with a zero lower level discriminator. This means every pulse is analyzed. These signals are cleared of electronic noise, random fluctuations associated with noise and shaped for the third stage.
>> Differentiation of random events from coincidental occurrences
Stage three then utilizes hardware and software pulse discrimination techniques that differentiate random events from coincidental occurrences in the incoming pulses from the scintillator. After this stage the pulses are processed with characterization hardware/software.
>> Background correction
In the final characterization stage the pulses from the scintillation material produced and the ambient background radiation are analyzed on a continuous basis to create a reference characterization. Background correction is performed automatically every sample period. This technique of background correction is extremely important especially when ambient background radiation level is high, when there are large atmospheric changes and when the contents of a shipping container vary in density. This allows the setting of extremely low alarm thresholds and minimizes the impact of false alarms.
RadComm's systems' ability to characterize the measured radiation levels, differentiate between various isotopes, virtually in real-time, all the while compensating for the fluctuations and changes in the ambient background radiation, mean the highest overall detection capability to the end user.

>>科学原理

>核辐射对人体的危害
问：核辐射对人员有哪些危害作用？
答：放射性物质以波或微粒形式放射出的一种能量就叫核辐射，核爆炸和核事故都有核辐射。它有a.b和y三种辐射形式。
A辐射只要用一张纸就能挡住，但吸入体内危害大；b辐射是高速电子，皮肤沾上后烧伤明显；y辐射和x射线相似，能穿透人体和建筑物，危害距离远。宇宙、自然界能产生放射性的物质不少，但危害都不太大，只有核爆炸或核电站事故泄漏的放射性物质才能大范围地对人员造成伤亡。
放射性物质可通过呼吸吸入，皮肤伤口及消化道吸收进入体内，引起内辐射，y辐射可穿透一定距离被机体吸收，使人员受到外照射伤害。内外照射形成放射病的症状有：疲劳，头昏、失眠、皮肤发红、溃疡、出血、脱发、白血病、呕吐、腹泻等。有时还会增加癌症、畸变、遗传性病发生率，影响几代人的健康。一般讲，身体接受的辐射能量越多，其放射病症状越严重，致癌、致畸风险越大。

>> 人体对核辐射承受的限度
In order to provide reliable and rugged state-of-the-art detectors suitable for any hostile environment, Radcomm uses nothing but lab-quality components, such as premium grade PVT and components using low noise design technology.

Offering the largest detector coverage available today at 68” vertical and 31” wide, Radcomm’s RC4138 two detector truck system provides premium top to bottom coverage, without sacrificing dwell time. Similarly, the Cricket grapple mounted system comes in four detector sizes, engineered to fit most grapples used in the steel industry today. Each of Radcomm’s conveyor and charge bucket detector applications are designed and engineered to fit customer specific applications.
>> Highest detection probability and fewest false alarms
Radcomm engineers have developed proprietary technology that not only tracks the pulse count rates from the PVT scintillator but applies a special characterization analysis on each pulse. The key benefit of this “characterization” is the knowledge that specific isotopes will produce predictable results.

Characterization is used to eliminate any major fluctuations caused by varying densities in loads of scrap metal, along with any atmospheric changes that might affect a reading. This technique is similar to what is utilized in gamma ray spectroscopy where a sodium iodide scintillator is used. Characterization is a signal processing technique that focuses on real-time system noise cancellation, correction of ambient background variations and maintaining extremely accurate alarm threshold settings, all resulting in higher radiation detection sensitivity and the fewest false alarms.

The radiation detection process of characterization is a four-stage process:

 >> Reduction of electronic “noise”
The front-end of Radcomm’s electronic circuitry has been kept to an absolute minimum thus significantly decreasing the introduction of electric noise to the system.
>> Every pulse is analyzed
The second stage of Radcomm’s electronics utilizes advanced signal discrimination with a zero lower level discriminator. This means every pulse is analyzed. These signals are cleared of electronic noise, random fluctuations associated with noise and shaped for the third stage.
>> Differentiation of random events from coincidental occurrences
Stage three then utilizes hardware and software pulse discrimination techniques that differentiate random events from coincidental occurrences in the incoming pulses from the scintillator. After this stage the pulses are processed with characterization hardware/software.
>> Background correction
In the final characterization stage the pulses from the scintillation material produced and the ambient background radiation are analyzed on a continuous basis to create a reference characterization. Background correction is performed automatically every sample period. This technique of background correction is extremely important especially when ambient background radiation level is high, when there are large atmospheric changes and when the contents of a shipping container vary in density. This allows the setting of extremely low alarm thresholds and minimizes the impact of false alarms.
RadComm's systems' ability to characterize the measured radiation levels, differentiate between various isotopes, virtually in real-time, all the while compensating for the fluctuations and changes in the ambient background radiation, mean the highest overall detection capability to the end user.
EHC Detection System(Shanghai) Co.,Ltd 依合斯探测系统（上海）有限公司 All Rights Reserved.