剎車(chē)片工廠淺談高大上的剎車(chē)片厚度實(shí)時(shí)監(jiān)控。

在高速上飛飆剎車(chē)突然失效?想想都是一場(chǎng)夢(mèng)魘，怕是每個(gè)人都不想遇到的。正因?yàn)榇?，科研人員在剎車(chē)片磨損指示方面也是煞費(fèi)苦心。

然而目前來(lái)看，不管是機(jī)械式還是電子式的磨損指示器（Wear Indicator）都有一個(gè)共同的缺點(diǎn)，即只能等到磨損到極限位置時(shí)才能報(bào)警。是否能讓剎車(chē)片剩余厚度像油量一樣實(shí)時(shí)顯示在儀表盤(pán)上？今天，我們就來(lái)看一個(gè)最新的發(fā)明zhuanli。

Wear Distance Sensor For A Brake Pad Of A Friction Brake

一種摩擦制動(dòng)剎車(chē)片用磨損距離感應(yīng)器

Assignee:KNORR-BREMSESysteme fuer Nutzfahrzeuge GmbH (Munich, DE)

受讓人：克諾爾商用車(chē)制動(dòng)系統(tǒng)有限公司

（克諾爾是世界有名的軌道及商用車(chē)輛制動(dòng)系統(tǒng)制造商，早在1905年即成立，在德國(guó)曾經(jīng)有90%的卡車(chē)裝備克諾爾的制動(dòng)裝置，是實(shí)打?qū)嵉男袠I(yè)長(zhǎng)老。）

Vehicles frequently use friction brakes to convert kinetic energy.

Since the pads are designed as wear parts the pads aregenerally softer than the brake disc, the pads experience a change of the padthickness over their usage duration.

車(chē)輛往往使用摩擦制動(dòng)器來(lái)轉(zhuǎn)換動(dòng)能。由于剎車(chē)片被設(shè)計(jì)為磨損件，剎車(chē)片通常比剎車(chē)盤(pán)軟。在使用期間，剎車(chē)片會(huì)有厚度的變化。

The necessity results this pad thickness change, that it isrecognized by the vehicle user when the pads have reached a so-called remainingpad thickness wear limit a replacement of the brake pads is necessary.

磨損造成剎車(chē)片厚度變化，當(dāng)剎車(chē)片達(dá)到所謂的剩余厚度或磨損限制時(shí)，必須更換剎車(chē)片。

 In order to ensure optimum use ofthe brake pads, it is desirable for the instantaneous actual state of theindividual brake pads, i.e., their pad thickness, to be able to be detected atany time.

為了保證剎車(chē)片的使用效果，我們期望剎車(chē)片的實(shí)際狀態(tài)，例如厚度，可以實(shí)時(shí)監(jiān)測(cè)。

Proposals for this purpose have been made, one of which provides regularlychecking a marking applied to the brake pad thus providing a decisioncriterion for the pad change. However, this check requires a certain regularityand certain cleaning work in order to unambiguously recognize the marking.

    為了實(shí)現(xiàn)此目的，有很多建議。其中一個(gè)是在剎車(chē)片上做一標(biāo)記，為剎車(chē)片更換提供一決策標(biāo)準(zhǔn)，然后定期檢查。但是，檢測(cè)需要一定的規(guī)律性，并且一定的清潔工作，以明確識(shí)別標(biāo)識(shí)。

A basic concept of the invention comprises providing a wear distancesensor  with a probe in a housing, whichis arranged in a brake pad such that it is subjected to the same wear as thebrake pad itself. The wear distance sensor the probe is therefore alsoshortened in the same amount by the wear. This advantageously results in aresistance change, which is simple to measure which is continuouslyprovided as an ohmic resistance value, i.e. a measurement, thereforedisplay of the pad thickness of each brake pad is possible.

該發(fā)明的基本設(shè)想是使用一磨損距離傳感器，傳感器的殼體里有一個(gè)探頭，該探頭被裝置在剎車(chē)片里，這樣傳感器與剎車(chē)片本身會(huì)有相同的磨損。具有探頭的傳感器由于磨損變短，這就造成傳感器里電阻器的變化，而實(shí)時(shí)的測(cè)量電阻器的歐姆值很簡(jiǎn)單。這樣，顯示每個(gè)剎車(chē)片的厚度變的可能。

原理很好理解，方法與小編之前想的一樣（-_-#），在具體實(shí)現(xiàn)上文章里做了些建議，如殼體使用耐熱的非導(dǎo)電體、電阻器需使用熱穩(wěn)定性電阻，而且硬度要與摩擦材料類(lèi)似或比剎車(chē)盤(pán)軟，這些都是適用的關(guān)鍵條件。

 該zhuanli實(shí)際應(yīng)用或許還需假以時(shí)日，但World is changing rapidly，我們拭目以待。